wip

.github/CODEOWNERS

@@ -7,7 +7,4 @@
 # global owners are only requested if there isn't a more specific
 # codeowner specified below. For this reason, the global codeowners
 # are often repeated in package-level definitions.
-*       @ebuchman @cmwaters @tychoish @williambanfield @creachadair @sergio-mena @jmalicevic @thanethomson @ancazamfir
-
-# Spec related changes can be approved by the protocol design team
-/spec   @josef-widder @milosevic @cason
+*       @alexanderbez @ebuchman @cmwaters @tessr @tychoish @williambanfield @creachadair

.github/ISSUE_TEMPLATE/proposal.md

@@ -1,37 +0,0 @@
----
-name: Protocol Change Proposal
-about: Create a proposal to request a change to the protocol
-
----
-
-<!-- < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < ☺ 
-v                            ✰  Thanks for opening an issue! ✰    
-v    Before smashing the submit button please review the template.
-v    Word of caution: Under-specified proposals may be rejected summarily 
-☺ > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >  -->
-
-# Protocol Change Proposal
-
-## Summary
-
-<!-- Short, concise description of the proposed change -->
-
-## Problem Definition
-
-<!-- Why do we need this change? 
-What problems may be addressed by introducing this change?
-What benefits does Tendermint stand to gain by including this change?
-Are there any disadvantages of including this change? -->
-
-## Proposal
-
-<!-- Detailed description of requirements of implementation -->
-
-____
-
-#### For Admin Use
-
-- [ ] Not duplicate issue
-- [ ] Appropriate labels applied
-- [ ] Appropriate contributors tagged
-- [ ] Contributor assigned/self-assigned

.github/auto-comment.yml

@@ -1,16 +1,16 @@
 pullRequestOpened: |
-  :wave: Thanks for creating a PR!
+  :wave: Thanks for creating a PR!   
 
-  Before we can merge this PR, please make sure that all the following items have been
+  Before we can merge this PR, please make sure that all the following items have been 
   checked off. If any of the checklist items are not applicable, please leave them but
-  write a little note why.
+  write a little note why.   
 
-  - [ ] Wrote tests
-  - [ ] Updated CHANGELOG_PENDING.md
-  - [ ] Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
-  - [ ] Updated relevant documentation (`docs/`) and code comments
-  - [ ] Re-reviewed `Files changed` in the Github PR explorer
-  - [ ] Applied Appropriate Labels
+  - [ ] Wrote tests  
+  - [ ] Updated CHANGELOG_PENDING.md   
+  - [ ] Linked to Github issue with discussion and accepted design OR link to spec that describes this work.  
+  - [ ] Updated relevant documentation (`docs/`) and code comments  
+  - [ ] Re-reviewed `Files changed` in the Github PR explorer  
+  - [ ] Applied Appropriate Labels  
 
 
-  Thank you for your contribution to Tendermint! :rocket:
+  Thank you for your contribution to Tendermint! :rocket:   

.github/dependabot.yml

@@ -3,48 +3,25 @@ updates:
   - package-ecosystem: github-actions
     directory: "/"
     schedule:
-      interval: weekly
+      interval: daily
+      time: "11:00"
     open-pull-requests-limit: 10
-    labels:
-      - T:dependencies
-      - S:automerge
-
   - package-ecosystem: npm
     directory: "/docs"
     schedule:
-      interval: weekly
+      interval: daily
+      time: "11:00"
     open-pull-requests-limit: 10
-
-  ###################################
-  ##
-  ## Update All Go Dependencies
-
+    reviewers:
+      - fadeev
   - package-ecosystem: gomod
     directory: "/"
     schedule:
       interval: daily
-    target-branch: "master"
+      time: "11:00"
     open-pull-requests-limit: 10
+    reviewers:
+      - melekes
+      - tessr
     labels:
       - T:dependencies
-      - S:automerge
-
-  - package-ecosystem: gomod
-    directory: "/"
-    schedule:
-      interval: daily
-    target-branch: "v0.34.x"
-    open-pull-requests-limit: 10
-    labels:
-      - T:dependencies
-      - S:automerge
-
-  - package-ecosystem: gomod
-    directory: "/"
-    schedule:
-      interval: daily
-    target-branch: "v0.35.x"
-    open-pull-requests-limit: 10
-    labels:
-      - T:dependencies
-      - S:automerge

.github/linter/markdownlint.yml

@@ -0,0 +1,8 @@
+default: true,
+MD007: { "indent": 4 }
+MD013: false
+MD024: { siblings_only: true }
+MD025: false
+MD033: { no-inline-html: false }
+no-hard-tabs: false
+whitespace: false

.github/linters/markdownlint.yml

@@ -1,8 +0,0 @@
-default: true,
-MD007: {"indent": 4}
-MD013: false
-MD024: {siblings_only: true}
-MD025: false
-MD033: {no-inline-html: false}
-no-hard-tabs: false
-whitespace: false

.github/linters/yaml-lint.yml

@@ -1,9 +0,0 @@
----
-# Default rules for YAML linting from super-linter.
-# See: See https://yamllint.readthedocs.io/en/stable/rules.html
-extends: default
-rules:
-  document-end: disable
-  document-start: disable
-  line-length: disable
-  truthy: disable

.github/mergify.yml

@@ -1,22 +1,13 @@
-queue_rules:
-  - name: default
-    conditions:
-      - base=master
-      - label=S:automerge
-
 pull_request_rules:
   - name: Automerge to master
     conditions:
       - base=master
       - label=S:automerge
     actions:
-      queue:
+      merge:
         method: squash
-        name: default
-        commit_message_template: |
-          {{ title }} (#{{ number }})
-
-          {{ body }}
+        strict: true
+        commit_message: title+body
   - name: backport patches to v0.34.x branch
     conditions:
       - base=master
@@ -25,11 +16,3 @@ pull_request_rules:
       backport:
         branches:
           - v0.34.x
-  - name: backport patches to v0.35.x branch
-    conditions:
-      - base=master
-      - label=S:backport-to-v0.35.x
-    actions:
-      backport:
-        branches:
-          - v0.35.x

.github/workflows/build.yml

@@ -1,82 +0,0 @@
-name: Build
-# Tests runs different tests (test_abci_apps, test_abci_cli, test_apps)
-# This workflow runs on every push to master or release branch and  every pull requests
-# All jobs will pass without running if no *{.go, .mod, .sum} files have been modified
-on:
-  pull_request:
-  push:
-    branches:
-      - master
-      - release/**
-
-jobs:
-  build:
-    name: Build
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        goarch: ["arm", "amd64"]
-        goos: ["linux"]
-    timeout-minutes: 5
-    steps:
-      - uses: actions/setup-go@v2
-        with:
-          go-version: "1.17"
-      - uses: actions/checkout@v2.4.0
-      - uses: technote-space/get-diff-action@v6.0.1
-        with:
-          PATTERNS: |
-            **/**.go
-            "!test/"
-            go.mod
-            go.sum
-            Makefile
-      - name: install
-        run: GOOS=${{ matrix.goos }} GOARCH=${{ matrix.goarch }} make build
-        if: "env.GIT_DIFF != ''"
-
-  test_abci_cli:
-    runs-on: ubuntu-latest
-    needs: build
-    timeout-minutes: 5
-    steps:
-      - uses: actions/setup-go@v2
-        with:
-          go-version: "1.17"
-      - uses: actions/checkout@v2.4.0
-      - uses: technote-space/get-diff-action@v6.0.1
-        with:
-          PATTERNS: |
-            **/**.go
-            go.mod
-            go.sum
-      - name: install
-        run: make install_abci
-        if: "env.GIT_DIFF != ''"
-      - run: abci/tests/test_cli/test.sh
-        shell: bash
-        if: "env.GIT_DIFF != ''"
-
-  test_apps:
-    runs-on: ubuntu-latest
-    needs: build
-    timeout-minutes: 5
-    steps:
-      - uses: actions/setup-go@v2
-        with:
-          go-version: "1.17"
-      - uses: actions/checkout@v2.4.0
-      - uses: technote-space/get-diff-action@v6.0.1
-        with:
-          PATTERNS: |
-            **/**.go
-            go.mod
-            go.sum
-      - name: install
-        run: make install install_abci
-        if: "env.GIT_DIFF != ''"
-      - name: test_apps
-        run: test/app/test.sh
-        shell: bash
-        if: "env.GIT_DIFF != ''"

.github/workflows/coverage.yml

@@ -0,0 +1,133 @@
+name: Test Coverage
+on:
+  pull_request:
+  push:
+    paths:
+      - "**.go"
+      - "!test/"
+    branches:
+      - master
+      - release/**
+
+jobs:
+  split-test-files:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2.3.4
+      - name: Create a file with all the pkgs
+        run: go list ./... > pkgs.txt
+      - name: Split pkgs into 4 files
+        run: split -d -n l/4 pkgs.txt pkgs.txt.part.
+      # cache multiple
+      - uses: actions/upload-artifact@v2
+        with:
+          name: "${{ github.sha }}-00"
+          path: ./pkgs.txt.part.00
+      - uses: actions/upload-artifact@v2
+        with:
+          name: "${{ github.sha }}-01"
+          path: ./pkgs.txt.part.01
+      - uses: actions/upload-artifact@v2
+        with:
+          name: "${{ github.sha }}-02"
+          path: ./pkgs.txt.part.02
+      - uses: actions/upload-artifact@v2
+        with:
+          name: "${{ github.sha }}-03"
+          path: ./pkgs.txt.part.03
+
+  build-linux:
+    name: Build
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        goarch: ["arm", "amd64"]
+    timeout-minutes: 5
+    steps:
+      - uses: actions/setup-go@v2
+        with:
+          go-version: "1.16"
+      - uses: actions/checkout@v2.3.4
+      - uses: technote-space/get-diff-action@v5
+        with:
+          PATTERNS: |
+            **/**.go
+            "!test/"
+            go.mod
+            go.sum
+      - name: install
+        run: GOOS=linux GOARCH=${{ matrix.goarch }} make build
+        if: "env.GIT_DIFF != ''"
+
+  tests:
+    runs-on: ubuntu-latest
+    needs: split-test-files
+    strategy:
+      fail-fast: false
+      matrix:
+        part: ["00", "01", "02", "03"]
+    steps:
+      - uses: actions/setup-go@v2
+        with:
+          go-version: "1.16"
+      - uses: actions/checkout@v2.3.4
+      - uses: technote-space/get-diff-action@v5
+        with:
+          PATTERNS: |
+            **/**.go
+            "!test/"
+            go.mod
+            go.sum
+      - uses: actions/download-artifact@v2
+        with:
+          name: "${{ github.sha }}-${{ matrix.part }}"
+        if: env.GIT_DIFF
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.16
+      - name: test & coverage report creation
+        run: |
+          cat pkgs.txt.part.${{ matrix.part }} | xargs go test -mod=readonly -timeout 8m -race -coverprofile=${{ matrix.part }}profile.out -covermode=atomic
+        if: env.GIT_DIFF
+      - uses: actions/upload-artifact@v2
+        with:
+          name: "${{ github.sha }}-${{ matrix.part }}-coverage"
+          path: ./${{ matrix.part }}profile.out
+
+  upload-coverage-report:
+    runs-on: ubuntu-latest
+    needs: tests
+    steps:
+      - uses: actions/checkout@v2.3.4
+      - uses: technote-space/get-diff-action@v5
+        with:
+          PATTERNS: |
+            **/**.go
+            "!test/"
+            go.mod
+            go.sum
+      - uses: actions/download-artifact@v2
+        with:
+          name: "${{ github.sha }}-00-coverage"
+        if: env.GIT_DIFF
+      - uses: actions/download-artifact@v2
+        with:
+          name: "${{ github.sha }}-01-coverage"
+        if: env.GIT_DIFF
+      - uses: actions/download-artifact@v2
+        with:
+          name: "${{ github.sha }}-02-coverage"
+        if: env.GIT_DIFF
+      - uses: actions/download-artifact@v2
+        with:
+          name: "${{ github.sha }}-03-coverage"
+        if: env.GIT_DIFF
+      - run: |
+          cat ./*profile.out | grep -v "mode: atomic" >> coverage.txt
+        if: env.GIT_DIFF
+      - uses: codecov/codecov-action@v2.1.0
+        with:
+          file: ./coverage.txt
+        if: env.GIT_DIFF

.github/workflows/docker.yml

@@ -1,19 +1,20 @@
-name: Docker
-# Build & Push rebuilds the tendermint docker image on every push to master and creation of tags
+name: Build & Push
+#  Build & Push rebuilds the tendermint docker image on every push to master and creation of tags
 # and pushes the image to https://hub.docker.com/r/interchainio/simapp/tags
 on:
+  pull_request:
   push:
     branches:
       - master
     tags:
-      - "v[0-9]+.[0-9]+.[0-9]+"  # Push events to matching v*, i.e. v1.0, v20.15.10
-      - "v[0-9]+.[0-9]+.[0-9]+-rc*"  # Push events to matching v*, i.e. v1.0-rc1, v20.15.10-rc5
+      - "v[0-9]+.[0-9]+.[0-9]+" # Push events to matching v*, i.e. v1.0, v20.15.10
+      - "v[0-9]+.[0-9]+.[0-9]+-rc*" # Push events to matching v*, i.e. v1.0-rc1, v20.15.10-rc5
 
 jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2.4.0
+      - uses: actions/checkout@v2.3.4
       - name: Prepare
         id: prep
         run: |
@@ -38,18 +39,18 @@ jobs:
         with:
           platforms: all
 
-      - name: Set up Docker Build
+      - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v1.6.0
 
       - name: Login to DockerHub
         if: ${{ github.event_name != 'pull_request' }}
-        uses: docker/login-action@v1.13.0
+        uses: docker/login-action@v1.10.0
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Publish to Docker Hub
-        uses: docker/build-push-action@v2.9.0
+        uses: docker/build-push-action@v2.7.0
         with:
           context: .
           file: ./DOCKER/Dockerfile

.github/workflows/e2e-manual.yml

@@ -1,36 +0,0 @@
-# Runs randomly generated E2E testnets nightly on master
-# manually run e2e tests
-name: e2e-manual
-on:
-  workflow_dispatch:
-
-jobs:
-  e2e-nightly-test:
-    # Run parallel jobs for the listed testnet groups (must match the
-    # ./build/generator -g flag)
-    strategy:
-      fail-fast: false
-      matrix:
-        group: ['00', '01', '02', '03']
-    runs-on: ubuntu-latest
-    timeout-minutes: 60
-    steps:
-      - uses: actions/setup-go@v2
-        with:
-          go-version: '1.17'
-
-      - uses: actions/checkout@v2.4.0
-
-      - name: Build
-        working-directory: test/e2e
-        # Run make jobs in parallel, since we can't run steps in parallel.
-        run: make -j2 docker generator runner tests
-
-      - name: Generate testnets
-        working-directory: test/e2e
-        # When changing -g, also change the matrix groups above
-        run: ./build/generator -g 4 -d networks/nightly/
-
-      - name: Run ${{ matrix.p2p }} p2p testnets
-        working-directory: test/e2e
-        run: ./run-multiple.sh networks/nightly/*-group${{ matrix.group }}-*.toml

.github/workflows/e2e-nightly-34x.yml

@@ -6,6 +6,7 @@
 
 name: e2e-nightly-34x
 on:
+  workflow_dispatch: # allow running workflow manually, in theory
   schedule:
     - cron: '0 2 * * *'
 
@@ -16,15 +17,15 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        group: ['00', '01']
+        group: ['00', '01', '02', '03']
     runs-on: ubuntu-latest
     timeout-minutes: 60
     steps:
       - uses: actions/setup-go@v2
         with:
-          go-version: '1.17'
+          go-version: '1.16'
 
-      - uses: actions/checkout@v2.4.0
+      - uses: actions/checkout@v2.3.4
         with:
           ref: 'v0.34.x'
 
@@ -36,7 +37,7 @@ jobs:
       - name: Generate testnets
         working-directory: test/e2e
         # When changing -g, also change the matrix groups above
-        run: ./build/generator -g 2 -d networks/nightly
+        run: ./build/generator -g 4 -d networks/nightly
 
       - name: Run testnets in group ${{ matrix.group }}
         working-directory: test/e2e
@@ -57,3 +58,19 @@ jobs:
           SLACK_COLOR: danger
           SLACK_MESSAGE: Nightly E2E tests failed on v0.34.x
           SLACK_FOOTER: ''
+
+  e2e-nightly-success: # may turn this off once they seem to pass consistently
+    needs: e2e-nightly-test
+    if: ${{ success() }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Notify Slack on success
+        uses: rtCamp/action-slack-notify@12e36fc18b0689399306c2e0b3e0f2978b7f1ee7
+        env:
+          SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK }}
+          SLACK_CHANNEL: tendermint-internal
+          SLACK_USERNAME: Nightly E2E Tests
+          SLACK_ICON_EMOJI: ':white_check_mark:'
+          SLACK_COLOR: good
+          SLACK_MESSAGE: Nightly E2E tests passed on v0.34.x
+          SLACK_FOOTER: ''

.github/workflows/e2e-nightly-35x.yml

@@ -1,75 +0,0 @@
-# Runs randomly generated E2E testnets nightly on v0.35.x.
-
-# !! If you change something in this file, you probably want
-# to update the e2e-nightly-master workflow as well!
-
-name: e2e-nightly-35x
-on:
-  schedule:
-    - cron: '0 2 * * *'
-
-jobs:
-  e2e-nightly-test:
-    # Run parallel jobs for the listed testnet groups (must match the
-    # ./build/generator -g flag)
-    strategy:
-      fail-fast: false
-      matrix:
-        p2p: ['legacy', 'new', 'hybrid']
-        group: ['00', '01', '02', '03']
-    runs-on: ubuntu-latest
-    timeout-minutes: 60
-    steps:
-      - uses: actions/setup-go@v2
-        with:
-          go-version: '1.17'
-
-      - uses: actions/checkout@v2.4.0
-        with:
-          ref: 'v0.35.x'
-
-      - name: Build
-        working-directory: test/e2e
-        # Run make jobs in parallel, since we can't run steps in parallel.
-        run: make -j2 docker generator runner tests
-
-      - name: Generate testnets
-        working-directory: test/e2e
-        # When changing -g, also change the matrix groups above
-        run: ./build/generator -g 4 -d networks/nightly/${{ matrix.p2p }} -p ${{ matrix.p2p }}
-
-      - name: Run ${{ matrix.p2p }} p2p testnets in group ${{ matrix.group }}
-        working-directory: test/e2e
-        run: ./run-multiple.sh networks/nightly/${{ matrix.p2p }}/*-group${{ matrix.group }}-*.toml
-
-  e2e-nightly-fail-2:
-    needs: e2e-nightly-test
-    if: ${{ failure() }}
-    runs-on: ubuntu-latest
-    steps:
-      - name: Notify Slack on failure
-        uses: rtCamp/action-slack-notify@12e36fc18b0689399306c2e0b3e0f2978b7f1ee7
-        env:
-          SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK }}
-          SLACK_CHANNEL: tendermint-internal
-          SLACK_USERNAME: Nightly E2E Tests
-          SLACK_ICON_EMOJI: ':skull:'
-          SLACK_COLOR: danger
-          SLACK_MESSAGE: Nightly E2E tests failed on v0.35.x
-          SLACK_FOOTER: ''
-
-  e2e-nightly-success:  # may turn this off once they seem to pass consistently
-    needs: e2e-nightly-test
-    if: ${{ success() }}
-    runs-on: ubuntu-latest
-    steps:
-      - name: Notify Slack on success
-        uses: rtCamp/action-slack-notify@12e36fc18b0689399306c2e0b3e0f2978b7f1ee7
-        env:
-          SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK }}
-          SLACK_CHANNEL: tendermint-internal
-          SLACK_USERNAME: Nightly E2E Tests
-          SLACK_ICON_EMOJI: ':white_check_mark:'
-          SLACK_COLOR: good
-          SLACK_MESSAGE: Nightly E2E tests passed on v0.35.x
-          SLACK_FOOTER: ''

.github/workflows/e2e-nightly-master.yml

@@ -5,25 +5,27 @@
 
 name: e2e-nightly-master
 on:
+  workflow_dispatch: # allow running workflow manually
   schedule:
     - cron: '0 2 * * *'
 
 jobs:
-  e2e-nightly-test:
+  e2e-nightly-test-2:
     # Run parallel jobs for the listed testnet groups (must match the
     # ./build/generator -g flag)
     strategy:
       fail-fast: false
       matrix:
-        group: ['00', '01', '02', '03']
+        p2p: ['legacy', 'new', 'hybrid']
+        group: ['00', '01']
     runs-on: ubuntu-latest
     timeout-minutes: 60
     steps:
       - uses: actions/setup-go@v2
         with:
-          go-version: '1.17'
+          go-version: '1.16'
 
-      - uses: actions/checkout@v2.4.0
+      - uses: actions/checkout@v2.3.4
 
       - name: Build
         working-directory: test/e2e
@@ -33,14 +35,14 @@ jobs:
       - name: Generate testnets
         working-directory: test/e2e
         # When changing -g, also change the matrix groups above
-        run: ./build/generator -g 4 -d networks/nightly/
+        run: ./build/generator -g 2 -d networks/nightly/${{ matrix.p2p }} -p ${{ matrix.p2p }}
 
-      - name: Run ${{ matrix.p2p }} p2p testnets
+      - name: Run ${{ matrix.p2p }} p2p testnets in group ${{ matrix.group }}
         working-directory: test/e2e
-        run: ./run-multiple.sh networks/nightly/*-group${{ matrix.group }}-*.toml
+        run: ./run-multiple.sh networks/nightly/${{ matrix.p2p }}/*-group${{ matrix.group }}-*.toml
 
   e2e-nightly-fail-2:
-    needs: e2e-nightly-test
+    needs: e2e-nightly-test-2
     if: ${{ failure() }}
     runs-on: ubuntu-latest
     steps:
@@ -55,8 +57,8 @@ jobs:
           SLACK_MESSAGE: Nightly E2E tests failed on master
           SLACK_FOOTER: ''
 
-  e2e-nightly-success:  # may turn this off once they seem to pass consistently
-    needs: e2e-nightly-test
+  e2e-nightly-success: # may turn this off once they seem to pass consistently
+    needs: e2e-nightly-test-2
     if: ${{ success() }}
     runs-on: ubuntu-latest
     steps:

.github/workflows/e2e.yml

@@ -2,7 +2,7 @@ name: e2e
 # Runs the CI end-to-end test network on all pushes to master or release branches
 # and every pull request, but only if any Go files have been changed.
 on:
-  workflow_dispatch:  # allow running workflow manually
+  workflow_dispatch: # allow running workflow manually
   pull_request:
   push:
     branches:
@@ -16,9 +16,9 @@ jobs:
     steps:
       - uses: actions/setup-go@v2
         with:
-          go-version: '1.17'
-      - uses: actions/checkout@v2.4.0
-      - uses: technote-space/get-diff-action@v6.0.1
+          go-version: '1.16'
+      - uses: actions/checkout@v2.3.4
+      - uses: technote-space/get-diff-action@v5
         with:
           PATTERNS: |
             **/**.go
@@ -33,5 +33,10 @@ jobs:
 
       - name: Run CI testnet
         working-directory: test/e2e
-        run: ./run-multiple.sh networks/ci.toml
+        run: ./build/runner -f networks/ci.toml
         if: "env.GIT_DIFF != ''"
+
+      - name: Emit logs on failure
+        if: ${{ failure() }}
+        working-directory: test/e2e
+        run: ./build/runner -f networks/ci.toml logs

.github/workflows/fuzz-nightly.yml

@@ -1,7 +1,7 @@
 # Runs fuzzing nightly.
-name: Fuzz Tests
+name: fuzz-nightly
 on:
-  workflow_dispatch:  # allow running workflow manually
+  workflow_dispatch: # allow running workflow manually
   schedule:
     - cron: '0 3 * * *'
   pull_request:
@@ -15,17 +15,32 @@ jobs:
     steps:
       - uses: actions/setup-go@v2
         with:
-          go-version: '1.17'
+          go-version: '1.16'
 
-      - uses: actions/checkout@v2.4.0
+      - uses: actions/checkout@v2.3.4
 
       - name: Install go-fuzz
         working-directory: test/fuzz
         run: go get -u github.com/dvyukov/go-fuzz/go-fuzz github.com/dvyukov/go-fuzz/go-fuzz-build
 
-      - name: Fuzz mempool
+      - name: Fuzz mempool-v1
         working-directory: test/fuzz
-        run: timeout -s SIGINT --preserve-status 10m make fuzz-mempool
+        run: timeout -s SIGINT --preserve-status 10m make fuzz-mempool-v1
+        continue-on-error: true
+
+      - name: Fuzz mempool-v0
+        working-directory: test/fuzz
+        run: timeout -s SIGINT --preserve-status 10m make fuzz-mempool-v0
+        continue-on-error: true
+
+      - name: Fuzz p2p-addrbook
+        working-directory: test/fuzz
+        run: timeout -s SIGINT --preserve-status 10m make fuzz-p2p-addrbook
+        continue-on-error: true
+
+      - name: Fuzz p2p-pex
+        working-directory: test/fuzz
+        run: timeout -s SIGINT --preserve-status 10m make fuzz-p2p-pex
         continue-on-error: true
 
       - name: Fuzz p2p-sc

.github/workflows/jepsen.yml

@@ -46,7 +46,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout the Jepsen repository
-        uses: actions/checkout@v2.4.0
+        uses: actions/checkout@v2.3.4
         with:
           repository: 'tendermint/jepsen'
 

.github/workflows/linkchecker.yml

@@ -1,12 +1,12 @@
 name: Check Markdown links
-on:
+on: 
   schedule:
     - cron: '* */24 * * *'
 jobs:
   markdown-link-check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2.4.0
+      - uses: actions/checkout@v2.3.4
       - uses: gaurav-nelson/github-action-markdown-link-check@1.0.13
         with:
           folder-path: "docs"

.github/workflows/lint.yml

@@ -1,4 +1,4 @@
-name: Golang Linter
+name: Lint
 # Lint runs golangci-lint over the entire Tendermint repository
 # This workflow is run on every pull request and push to master
 # The `golangci` job will pass without running if no *.{go, mod, sum} files have been modified.
@@ -13,8 +13,8 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 8
     steps:
-      - uses: actions/checkout@v2.4.0
-      - uses: technote-space/get-diff-action@v6.0.1
+      - uses: actions/checkout@v2.3.4
+      - uses: technote-space/get-diff-action@v5
         with:
           PATTERNS: |
             **/**.go
@@ -23,7 +23,7 @@ jobs:
       - uses: golangci/golangci-lint-action@v2.5.2
         with:
           # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.
-          version: v1.42.1
+          version: v1.38
           args: --timeout 10m
           github-token: ${{ secrets.github_token }}
         if: env.GIT_DIFF

.github/workflows/linter.yml

@@ -1,4 +1,4 @@
-name: Markdown Linter
+name: Lint
 on:
   push:
     branches:
@@ -19,14 +19,14 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v2.4.0
+        uses: actions/checkout@v2.3.4
       - name: Lint Code Base
-        uses: docker://github/super-linter:v4
+        uses: docker://github/super-linter:v3
         env:
+          LINTER_RULES_PATH: .
           VALIDATE_ALL_CODEBASE: true
           DEFAULT_BRANCH: master
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           VALIDATE_MD: true
           VALIDATE_OPENAPI: true
           VALIDATE_YAML: true
-          YAML_CONFIG_FILE: yaml-lint.yml

.github/workflows/markdown-links.yml

@@ -1,17 +0,0 @@
-name: Check Markdown links
-
-on:
-  push:
-    branches:
-      - master
-  pull_request:
-    branches: [master]
-
-jobs:
-  markdown-link-check:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@master
-      - uses: gaurav-nelson/github-action-markdown-link-check@1.0.13
-        with:
-          check-modified-files-only: 'yes'

.github/workflows/proto-docker.yml

@@ -0,0 +1,51 @@
+name: Build & Push TM Proto Builder
+on:
+  pull_request:
+    paths:
+      - "tools/proto/*"
+  push:
+    branches:
+      - master
+    paths:
+      - "tools/proto/*"
+  schedule:
+    # run this job once a month to recieve any go or buf updates
+    - cron: "* * 1 * *"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2.3.4
+      - name: Prepare
+        id: prep
+        run: |
+          DOCKER_IMAGE=tendermintdev/docker-build-proto
+          VERSION=noop
+          if [[ $GITHUB_REF == refs/tags/* ]]; then
+            VERSION=${GITHUB_REF#refs/tags/}
+          elif [[ $GITHUB_REF == refs/heads/* ]]; then
+            VERSION=$(echo ${GITHUB_REF#refs/heads/} | sed -r 's#/+#-#g')
+            if [ "${{ github.event.repository.default_branch }}" = "$VERSION" ]; then
+              VERSION=latest
+            fi
+          fi
+          TAGS="${DOCKER_IMAGE}:${VERSION}"
+          echo ::set-output name=tags::${TAGS}
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1.6.0
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v1.10.0
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Publish to Docker Hub
+        uses: docker/build-push-action@v2.7.0
+        with:
+          context: ./tools/proto
+          file: ./tools/proto/Dockerfile
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.prep.outputs.tags }}

.github/workflows/proto-dockerfile.yml

@@ -1,64 +0,0 @@
-# This workflow (re)builds and pushes a Docker image containing the
-# protobuf build tools used by the other workflows.
-#
-# When making changes that require updates to the builder image, you
-# should merge the updates first and wait for this workflow to complete,
-# so that the changes will be available for the dependent workflows.
-#
-
-name: Build & Push Proto Builder Image
-on:
-  pull_request:
-    paths:
-      - "proto/*"
-  push:
-    branches:
-      - master
-    paths:
-      - "proto/*"
-  schedule:
-    # run this job once a month to recieve any go or buf updates
-    - cron: "0 9 1 * *"
-
-env:
-  REGISTRY: ghcr.io
-  IMAGE_NAME: tendermint/docker-build-proto
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2.4.0
-      - name: Check out and assign tags
-        id: prep
-        run: |
-          DOCKER_IMAGE="${REGISTRY}/${IMAGE_NAME}"
-          VERSION=noop
-          if [[ "$GITHUB_REF" == "refs/tags/*" ]]; then
-            VERSION="${GITHUB_REF#refs/tags/}"
-          elif [[ "$GITHUB_REF" == "refs/heads/*" ]]; then
-            VERSION="$(echo "${GITHUB_REF#refs/heads/}" | sed -r 's#/+#-#g')"
-            if [[ "${{ github.event.repository.default_branch }}" = "$VERSION" ]]; then
-              VERSION=latest
-            fi
-          fi
-          TAGS="${DOCKER_IMAGE}:${VERSION}"
-          echo ::set-output name=tags::"${TAGS}"
-
-      - name: Set up docker buildx
-        uses: docker/setup-buildx-action@v1.6.0
-
-      - name: Log in to the container registry
-        uses: docker/login-action@v1.13.0
-        with:
-          registry: ${{ env.REGISTRY }}
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Build and publish image
-        uses: docker/build-push-action@v2.9.0
-        with:
-          context: ./proto
-          file: ./proto/Dockerfile
-          push: ${{ github.event_name != 'pull_request' }}
-          tags: ${{ steps.prep.outputs.tags }}

.github/workflows/proto.yml

@@ -1,24 +1,23 @@
-name: Proto Check
+name: Protobuf
 # Protobuf runs buf (https://buf.build/) lint and check-breakage
-# This workflow is only run when a file in the proto directory
-# has been modified.
+# This workflow is only run when a .proto file has been modified
 on:
-  workflow_dispatch:  # allow running workflow manually
+  workflow_dispatch: # allow running workflow manually
   pull_request:
     paths:
-      - "proto/*"
+      - "**.proto"
 jobs:
   proto-lint:
     runs-on: ubuntu-latest
     timeout-minutes: 4
     steps:
-      - uses: actions/checkout@v2.4.0
+      - uses: actions/checkout@v2.3.4
       - name: lint
         run: make proto-lint
   proto-breakage:
     runs-on: ubuntu-latest
     timeout-minutes: 4
     steps:
-      - uses: actions/checkout@v2.4.0
+      - uses: actions/checkout@v2.3.4
       - name: check-breakage
         run: make proto-check-breaking-ci

.github/workflows/release.yml

@@ -5,20 +5,20 @@ on:
     branches:
       - "RC[0-9]/**"
     tags:
-      - "v[0-9]+.[0-9]+.[0-9]+"  # Push events to matching v*, i.e. v1.0, v20.15.10
+      - "v[0-9]+.[0-9]+.[0-9]+" # Push events to matching v*, i.e. v1.0, v20.15.10
 
 jobs:
   goreleaser:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2.4.0
+        uses: actions/checkout@v2.3.4
         with:
           fetch-depth: 0
 
       - uses: actions/setup-go@v2
         with:
-          go-version: '1.17'
+          go-version: '1.16'
 
       - name: Build
         uses: goreleaser/goreleaser-action@v2

.github/workflows/tests.yml

@@ -1,75 +1,106 @@
-name: Test
+name: Tests
+# Tests runs different tests (test_abci_apps, test_abci_cli, test_apps)
+# This workflow runs on every push to master or release branch and  every pull requests
+# All jobs will pass without running if no *{.go, .mod, .sum} files have been modified
 on:
   pull_request:
   push:
-    paths:
-      - "**.go"
     branches:
       - master
       - release/**
 
 jobs:
-  tests:
+  build:
+    name: Build
     runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        part: ["00", "01", "02", "03", "04", "05"]
+    timeout-minutes: 5
     steps:
       - uses: actions/setup-go@v2
         with:
-          go-version: "1.17"
-      - uses: actions/checkout@v2.4.0
-      - uses: technote-space/get-diff-action@v6.0.1
+          go-version: "1.16"
+      - uses: actions/checkout@v2.3.4
+      - uses: technote-space/get-diff-action@v5
         with:
           PATTERNS: |
             **/**.go
-            "!test/"
             go.mod
             go.sum
-            Makefile
-      - name: Run Go Tests
-        run: |
-          make test-group-${{ matrix.part }} NUM_SPLIT=6
-        if: env.GIT_DIFF
-      - uses: actions/upload-artifact@v2
+      - name: install
+        run: make install install_abci
+        if: "env.GIT_DIFF != ''"
+      - uses: actions/cache@v2.1.6
         with:
-          name: "${{ github.sha }}-${{ matrix.part }}-coverage"
-          path: ./build/${{ matrix.part }}.profile.out
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
+        if: env.GIT_DIFF
+      # Cache binaries for use by other jobs
+      - uses: actions/cache@v2.1.6
+        with:
+          path: ~/go/bin
+          key: ${{ runner.os }}-${{ github.sha }}-tm-binary
+        if: env.GIT_DIFF
 
-  upload-coverage-report:
+  test_abci_cli:
     runs-on: ubuntu-latest
-    needs: tests
+    needs: build
+    timeout-minutes: 5
     steps:
-      - uses: actions/checkout@v2.4.0
-      - uses: technote-space/get-diff-action@v6.0.1
+      - uses: actions/setup-go@v2
+        with:
+          go-version: "1.16"
+      - uses: actions/checkout@v2.3.4
+      - uses: technote-space/get-diff-action@v5
         with:
           PATTERNS: |
             **/**.go
-            "!test/"
             go.mod
             go.sum
-            Makefile
-      - uses: actions/download-artifact@v2
+      - uses: actions/cache@v2.1.6
         with:
-          name: "${{ github.sha }}-00-coverage"
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
         if: env.GIT_DIFF
-      - uses: actions/download-artifact@v2
+      - uses: actions/cache@v2.1.6
         with:
-          name: "${{ github.sha }}-01-coverage"
+          path: ~/go/bin
+          key: ${{ runner.os }}-${{ github.sha }}-tm-binary
         if: env.GIT_DIFF
-      - uses: actions/download-artifact@v2
+      - run: abci/tests/test_cli/test.sh
+        shell: bash
+        if: env.GIT_DIFF
+
+  test_apps:
+    runs-on: ubuntu-latest
+    needs: build
+    timeout-minutes: 5
+    steps:
+      - uses: actions/setup-go@v2
         with:
-          name: "${{ github.sha }}-02-coverage"
-        if: env.GIT_DIFF
-      - uses: actions/download-artifact@v2
+          go-version: "1.16"
+      - uses: actions/checkout@v2.3.4
+      - uses: technote-space/get-diff-action@v5
         with:
-          name: "${{ github.sha }}-03-coverage"
-        if: env.GIT_DIFF
-      - run: |
-          cat ./*profile.out | grep -v "mode: set" >> coverage.txt
-        if: env.GIT_DIFF
-      - uses: codecov/codecov-action@v2.1.0
+          PATTERNS: |
+            **/**.go
+            go.mod
+            go.sum
+      - uses: actions/cache@v2.1.6
         with:
-          file: ./coverage.txt
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
+        if: env.GIT_DIFF
+      - uses: actions/cache@v2.1.6
+        with:
+          path: ~/go/bin
+          key: ${{ runner.os }}-${{ github.sha }}-tm-binary
+        if: env.GIT_DIFF
+      - name: test_apps
+        run: test/app/test.sh
+        shell: bash
         if: env.GIT_DIFF

.gitignore

@@ -25,7 +25,6 @@ docs/_build
 docs/dist
 docs/node_modules/
 docs/spec
-docs/.vuepress/public/rpc
 index.html.md
 libs/pubsub/query/fuzz_test/output
 profile\.out
@@ -47,11 +46,3 @@ test/fuzz/**/corpus
 test/fuzz/**/crashers
 test/fuzz/**/suppressions
 test/fuzz/**/*.zip
-proto/spec/**/*.pb.go
-*.aux
-*.bbl
-*.blg
-*.log
-*.pdf
-*.gz
-*.dvi

.golangci.yml

@@ -13,18 +13,18 @@ linters:
     # - gochecknoinits
     # - gocognit
     - goconst
-    # - gocritic
+    - gocritic
     # - gocyclo
     # - godox
     - gofmt
     - goimports
-    - revive
+    - golint
     - gosec
     - gosimple
     - govet
     - ineffassign
     # - interfacer
-    # - lll
+    - lll
     # - maligned
     - misspell
     - nakedret
@@ -46,6 +46,9 @@ issues:
     - path: _test\.go
       linters:
         - gosec
+    - linters:
+        - lll
+      source: "https://"
   max-same-issues: 50
 
 linters-settings:

.goreleaser.yml

@@ -29,8 +29,8 @@ release:
 
 archives:
   - files:
-      - LICENSE
-      - README.md
-      - UPGRADING.md
-      - SECURITY.md
-      - CHANGELOG.md
+    - LICENSE
+    - README.md
+    - UPGRADING.md
+    - SECURITY.md
+    - CHANGELOG.md

.markdownlint.yml

@@ -1,11 +0,0 @@
-default: true
-MD001: false
-MD007: {indent: 4}
-MD013: false
-MD024: {siblings_only: true}
-MD025: false
-MD033: false
-MD036: false
-MD010: false
-MD012: false
-MD028: false

CHANGELOG.md

@@ -1,279 +1,160 @@
 # Changelog
 
-Friendly reminder: We have a [bug bounty program](https://hackerone.com/cosmos).
+Friendly reminder: We have a [bug bounty program](https://hackerone.com/tendermint).
 
-## v0.35.2
+## v0.35
 
-February 28, 2022
-
-Special thanks to external contributors on this release: @ashcherbakov, @yihuang, @waelsy123
-
-### IMPROVEMENTS
-
-- [consensus] [\#7875](https://github.com/tendermint/tendermint/pull/7875) additional timing metrics. (@williambanfield)
-
-### BUG FIXES
-
-- [abci] [\#7990](https://github.com/tendermint/tendermint/pull/7990) revert buffer limit change. (@williambanfield)
-- [cli] [#7837](https://github.com/tendermint/tendermint/pull/7837) fix app hash in state rollback. (@yihuang)
-- [cli] [\#7869](https://github.com/tendermint/tendermint/pull/7869) Update unsafe-reset-all command to match release v35. (waelsy123)
-- [light] [\#7640](https://github.com/tendermint/tendermint/pull/7640) Light Client: fix absence proof verification (@ashcherbakov)
-- [light] [\#7641](https://github.com/tendermint/tendermint/pull/7641) Light Client: fix querying against the latest height (@ashcherbakov)
-- [mempool] [\#7718](https://github.com/tendermint/tendermint/pull/7718) return duplicate tx errors more consistently. (@tychoish)
-- [rpc] [\#7744](https://github.com/tendermint/tendermint/pull/7744) fix layout of endpoint list. (@creachadair)
-- [statesync] [\#7886](https://github.com/tendermint/tendermint/pull/7886) assert app version matches. (@cmwaters)
-
-## v0.35.1
-
-January 26, 2022
-
-Special thanks to external contributors on this release: @altergui, @odeke-em,
-@thanethomson
+Special thanks to external contributors on this release: @JayT106, @bipulprasad, @alessio, @Yawning, @silasdavis,
+@cuonglm, @tanyabouman, @JoeKash, @githubsands, @jeebster, @crypto-facs, @liamsi, and @gotjoshua
 
 ### BREAKING CHANGES
 
 - CLI/RPC/Config
+  - [pubsub/events] \#6634 The `ResultEvent.Events` field is now of type `[]abci.Event` preserving event order instead of `map[string][]string`. (@alexanderbez)
+  - [config] \#5598 The `test_fuzz` and `test_fuzz_config` P2P settings have been removed. (@erikgrinaker)
+  - [config] \#5728 `fastsync.version = "v1"` is no longer supported (@melekes)
+  - [cli] \#5772 `gen_node_key` prints JSON-encoded `NodeKey` rather than ID and does not save it to `node_key.json` (@melekes)
+  - [cli] \#5777 use hyphen-case instead of snake_case for all cli commands and config parameters (@cmwaters)
+  - [rpc] \#6019 standardise RPC errors and return the correct status code (@bipulprasad & @cmwaters)
+  - [rpc] \#6168 Change default sorting to desc for `/tx_search` results (@melekes)
+  - [cli] \#6282 User must specify the node mode when using `tendermint init` (@cmwaters)
+  - [state/indexer] \#6382 reconstruct indexer, move txindex into the indexer package (@JayT106)
+  - [cli] \#6372 Introduce `BootstrapPeers` as part of the new p2p stack. Peers to be connected on  startup (@cmwaters)
+  - [config] \#6462 Move `PrivValidator` configuration out of `BaseConfig` into its own section. (@tychoish)
+  - [rpc] \#6610 Add MaxPeerBlockHeight into /status rpc call (@JayT106)
+  - [blocksync/rpc] \#6620 Add TotalSyncedTime & RemainingTime to SyncInfo in /status RPC  (@JayT106)
+  - [rpc/grpc] \#6725 Mark gRPC in the RPC layer as deprecated.
+  - [blocksync/v2] \#6730 Fast Sync v2 is deprecated, please use v0
+  - [rpc] Add genesis_chunked method to support paginated and parallel fetching of large genesis documents.
+  - [rpc/jsonrpc/server] \#6785 `Listen` function updated to take an `int` argument, `maxOpenConnections`, instead of an entire config object. (@williambanfield)
+  - [rpc] \#6820 Update RPC methods to reflect changes in the p2p layer, disabling support for `UnsafeDialPeers` and `UnsafeDialPeers` when used with the new p2p layer, and changing the response format of the peer list in `NetInfo` for all users.
+  - [cli] \#6854 Remove deprecated snake case commands. (@tychoish)
 
-  - [config] [\#7276](https://github.com/tendermint/tendermint/pull/7276) rpc: Add experimental config params to allow for subscription buffer size control (@thanethomson).
+- Apps
+  - [ABCI] \#6408 Change the `key` and `value` fields from `[]byte` to `string` in the `EventAttribute` type. (@alexanderbez)
+  - [ABCI] \#5447 Remove `SetOption` method from `ABCI.Client` interface
+  - [ABCI] \#5447 Reset `Oneof` indexes for  `Request` and `Response`.
+  - [ABCI] \#5818 Use protoio for msg length delimitation. Migrates from int64 to uint64 length delimiters.
+  - [ABCI] \#3546 Add `mempool_error` field to `ResponseCheckTx`. This field will contain an error string if Tendermint encountered an error while adding a transaction to the mempool. (@williambanfield)
+  - [Version] \#6494 `TMCoreSemVer` has been renamed to `TMVersion`.
+	- It is not required any longer to set ldflags to set version strings
+  - [abci/counter] \#6684 Delete counter example app
 
-- P2P Protocol
+- Go API
+  - [pubsub] \#6634 The `Query#Matches` method along with other pubsub methods, now accepts a `[]abci.Event` instead of `map[string][]string`. (@alexanderbez)
+  - [p2p] \#6618 \#6583 Move `p2p.NodeInfo`, `p2p.NodeID` and `p2p.NetAddress` into `types` to support use in external packages. (@tychoish)
+  - [node] \#6540 Reduce surface area of the `node` package by making most of the implementation details private. (@tychoish)
+  - [p2p] \#6547 Move the entire `p2p` package and all reactor implementations into `internal`.  (@tychoish)
+  - [libs/log] \#6534 Remove the existing custom Tendermint logger backed by go-kit. The logging interface, `Logger`, remains. Tendermint still provides a default logger backed by the performant zerolog logger. (@alexanderbez)
+  - [libs/time] \#6495 Move types/time to libs/time to improve consistency. (@tychoish)
+  - [mempool] \#6529 The `Context` field has been removed from the `TxInfo` type. `CheckTx` now requires a `Context` argument. (@alexanderbez)
+  - [abci/client, proxy] \#5673 `Async` funcs return an error, `Sync` and `Async` funcs accept `context.Context` (@melekes)
+  - [p2p] Remove unused function `MakePoWTarget`. (@erikgrinaker)
+  - [libs/bits] \#5720 Validate `BitArray` in `FromProto`, which now returns an error (@melekes)
+  - [proto/p2p] Rename `DefaultNodeInfo` and `DefaultNodeInfoOther` to `NodeInfo` and `NodeInfoOther` (@erikgrinaker)
+  - [proto/p2p] Rename `NodeInfo.default_node_id` to `node_id` (@erikgrinaker)
+  - [libs/os] Kill() and {Must,}{Read,Write}File() functions have been removed. (@alessio)
+  - [store] \#5848 Remove block store state in favor of using the db iterators directly (@cmwaters)
+  - [state] \#5864 Use an iterator when pruning state (@cmwaters)
+  - [types] \#6023 Remove `tm2pb.Header`, `tm2pb.BlockID`, `tm2pb.PartSetHeader` and `tm2pb.NewValidatorUpdate`.
+	- Each of the above types has a `ToProto` and `FromProto` method or function which replaced this logic.
+  - [light] \#6054 Move `MaxRetryAttempt` option from client to provider.
+	- `NewWithOptions` now sets the max retry attempts and timeouts (@cmwaters)
+  - [all] \#6077 Change spelling from British English to American (@cmwaters)
+	- Rename "Subscription.Cancelled()" to "Subscription.Canceled()" in libs/pubsub
+	- Rename "behaviour" pkg to "behavior" and internalized it in blocksync v2
+  - [rpc/client/http] \#6176 Remove `endpoint` arg from `New`, `NewWithTimeout` and `NewWithClient` (@melekes)
+  - [rpc/client/http] \#6176 Unexpose `WSEvents` (@melekes)
+  - [rpc/jsonrpc/client/ws_client] \#6176 `NewWS` no longer accepts options (use `NewWSWithOptions` and `OnReconnect` funcs to configure the client) (@melekes)
+  - [internal/libs] \#6366 Move `autofile`, `clist`,`fail`,`flowrate`, `protoio`, `sync`, `tempfile`, `test` and `timer` lib packages to an internal folder
+  - [libs/rand] \#6364 Remove most of libs/rand in favour of standard lib's `math/rand` (@liamsi)
+  - [mempool] \#6466 The original mempool reactor has been versioned as `v0` and moved to a sub-package under the root `mempool` package.
+	Some core types have been kept in the `mempool` package such as `TxCache` and it's implementations, the `Mempool` interface itself
+	and `TxInfo`. (@alexanderbez)
+  - [crypto/sr25519] \#6526 Do not re-execute the Ed25519-style key derivation step when doing signing and verification.  The derivation is now done once and only once.  This breaks `sr25519.GenPrivKeyFromSecret` output compatibility. (@Yawning)
+  - [types] \#6627 Move `NodeKey` to types to make the type public.
+  - [config] \#6627 Extend `config` to contain methods `LoadNodeKeyID` and `LoadorGenNodeKeyID`
+  - [blocksync] \#6755 Rename `FastSync` and `Blockchain` package to `BlockSync` (@cmwaters)
 
-  - [p2p] [\#7265](https://github.com/tendermint/tendermint/pull/7265) Peer manager reduces peer score for each failed dial attempts for peers that have not successfully dialed. (@tychoish)
-  - [p2p] [\#7594](https://github.com/tendermint/tendermint/pull/7594) always advertise self, to enable mutual address discovery. (@altergui)
+- Data Storage
+  - [store/state/evidence/light] \#5771 Use an order-preserving varint key encoding (@cmwaters)
+  - [mempool] \#6396 Remove mempool's write ahead log (WAL), (previously unused by the tendermint code). (@tychoish)
+  - [state] \#6541 Move pruneBlocks from consensus/state to state/execution. (@JayT106)
+
+- Tooling
+  - [tools] \#6498 Set OS home dir to instead of the hardcoded PATH. (@JayT106)
+  - [cli/indexer] \#6676 Reindex events command line tooling. (@JayT106)
 
 ### FEATURES
 
-- [rpc] [\#7270](https://github.com/tendermint/tendermint/pull/7270) Add `header` and `header_by_hash` RPC Client queries. (@fedekunze) (@cmwaters)
-
-### IMPROVEMENTS
-
-- [internal/protoio] [\#7325](https://github.com/tendermint/tendermint/pull/7325) Optimized `MarshalDelimited` by inlining the common case and using a `sync.Pool` in the worst case. (@odeke-em)
-- [\#7338](https://github.com/tendermint/tendermint/pull/7338) pubsub: Performance improvements for the event query API (backport of #7319) (@creachadair)
-- [\#7252](https://github.com/tendermint/tendermint/pull/7252) Add basic metrics to the indexer package. (@creachadair)
-- [\#7338](https://github.com/tendermint/tendermint/pull/7338) Performance improvements for the event query API. (@creachadair)
-
-### BUG FIXES
-
-- [\#7310](https://github.com/tendermint/tendermint/issues/7310) pubsub: Report a non-nil error when shutting down (fixes #7306).
-- [\#7355](https://github.com/tendermint/tendermint/pull/7355) Fix incorrect tests using the PSQL sink. (@creachadair)
-- [\#7683](https://github.com/tendermint/tendermint/pull/7683) rpc: check error code for broadcast_tx_commit. (@tychoish)
-
-## v0.35.0
-
-November 4, 2021
-
-Special thanks to external contributors on this release: @JayT106,
-@bipulprasad, @alessio, @Yawning, @silasdavis, @cuonglm, @tanyabouman,
-@JoeKash, @githubsands, @jeebster, @crypto-facs, @liamsi, and @gotjoshua
-
-### FEATURES
-
-- [cli] [#7033](https://github.com/tendermint/tendermint/pull/7033) Add a `rollback` command to rollback to the previous tendermint state in the event of an incorrect app hash. (@cmwaters)
-- [config] [\#7174](https://github.com/tendermint/tendermint/pull/7174) expose ability to write config to arbitrary paths. (@tychoish)
-- [mempool, rpc] [\#7065](https://github.com/tendermint/tendermint/pull/7065) add removetx rpc method (backport of #7047) (@tychoish).
-- [\#6982](https://github.com/tendermint/tendermint/pull/6982) tendermint binary has built-in suppport for running the e2e application (with state sync support) (@cmwaters).
 - [config] Add `--mode` flag and config variable. See [ADR-52](https://github.com/tendermint/tendermint/blob/master/docs/architecture/adr-052-tendermint-mode.md) @dongsam
-- [rpc] [\#6329](https://github.com/tendermint/tendermint/pull/6329) Don't cap page size in unsafe mode (@gotjoshua, @cmwaters)
-- [pex] [\#6305](https://github.com/tendermint/tendermint/pull/6305) v2 pex reactor with backwards compatability. Introduces two new pex messages to
+- [rpc] \#6329 Don't cap page size in unsafe mode (@gotjoshua, @cmwaters)
+- [pex] \#6305 v2 pex reactor with backwards compatability. Introduces two new pex messages to
   accomodate for the new p2p stack. Removes the notion of seeds and crawling. All peer
   exchange reactors behave the same. (@cmwaters)
-- [crypto] [\#6376](https://github.com/tendermint/tendermint/pull/6376) Enable sr25519 as a validator key type
-- [mempool] [\#6466](https://github.com/tendermint/tendermint/pull/6466) Introduction of a prioritized mempool. (@alexanderbez)
+- [crypto] \#6376 Enable sr25519 as a validator key type
+- [mempool] \#6466 Introduction of a prioritized mempool. (@alexanderbez)
   - `Priority` and `Sender` have been introduced into the `ResponseCheckTx` type, where the `priority` will determine the prioritization of
   the transaction when a proposer reaps transactions for a block proposal. The `sender` field acts as an index.
   - Operators may toggle between the legacy mempool reactor, `v0`, and the new prioritized reactor, `v1`, by setting the
   `mempool.version` configuration, where `v1` is the default configuration.
   - Applications that do not specify a priority, i.e. zero, will have transactions reaped by the order in which they are received by the node.
   - Transactions are gossiped in FIFO order as they are in `v0`.
-- [config/indexer] [\#6411](https://github.com/tendermint/tendermint/pull/6411) Introduce support for custom event indexing data sources, specifically PostgreSQL. (@JayT106)
-- [blocksync/event] [\#6619](https://github.com/tendermint/tendermint/pull/6619) Emit blocksync status event when switching consensus/blocksync (@JayT106)
-- [statesync/event] [\#6700](https://github.com/tendermint/tendermint/pull/6700) Emit statesync status start/end event (@JayT106)
-- [inspect] [\#6785](https://github.com/tendermint/tendermint/pull/6785) Add a new `inspect` command for introspecting the state and block store of a crashed tendermint node. (@williambanfield)
-
-### BUG FIXES
-
-- [\#7106](https://github.com/tendermint/tendermint/pull/7106) Revert mutex change to ABCI Clients (@tychoish).
-- [\#7142](https://github.com/tendermint/tendermint/pull/7142) mempool: remove panic when recheck-tx was not sent to ABCI application (@williambanfield).
-- [consensus]: [\#7060](https://github.com/tendermint/tendermint/pull/7060)
-  wait until peerUpdates channel is closed to close remaining peers (@williambanfield)
-- [privval] [\#5638](https://github.com/tendermint/tendermint/pull/5638) Increase read/write timeout to 5s and calculate ping interval based on it (@JoeKash)
-- [evidence] [\#6375](https://github.com/tendermint/tendermint/pull/6375) Fix bug with inconsistent LightClientAttackEvidence hashing (cmwaters)
-- [rpc] [\#6507](https://github.com/tendermint/tendermint/pull/6507) Ensure RPC client can handle URLs without ports (@JayT106)
-- [statesync] [\#6463](https://github.com/tendermint/tendermint/pull/6463) Adds Reverse Sync feature to fetch historical light blocks after state sync in order to verify any evidence (@cmwaters)
-- [blocksync] [\#6590](https://github.com/tendermint/tendermint/pull/6590) Update the metrics during blocksync (@JayT106)
-
-### BREAKING CHANGES
-
-- Go API
-
-  - [crypto/armor]: [\#6963](https://github.com/tendermint/tendermint/pull/6963) remove package which is unused, and based on
-    deprecated fundamentals. Downstream users should maintain this
-    library. (@tychoish)
-  - [state] [store] [proxy] [rpc/core]: [\#6937](https://github.com/tendermint/tendermint/pull/6937) move packages to
-    `internal` to prevent consumption of these internal APIs by
-    external users. (@tychoish)
-  - [pubsub] [\#6634](https://github.com/tendermint/tendermint/pull/6634) The `Query#Matches` method along with other pubsub methods, now accepts a `[]abci.Event` instead of `map[string][]string`. (@alexanderbez)
-  - [p2p] [\#6618](https://github.com/tendermint/tendermint/pull/6618) [\#6583](https://github.com/tendermint/tendermint/pull/6583) Move `p2p.NodeInfo`, `p2p.NodeID` and `p2p.NetAddress` into `types` to support use in external packages. (@tychoish)
-  - [node] [\#6540](https://github.com/tendermint/tendermint/pull/6540) Reduce surface area of the `node` package by making most of the implementation details private. (@tychoish)
-  - [p2p] [\#6547](https://github.com/tendermint/tendermint/pull/6547) Move the entire `p2p` package and all reactor implementations into `internal`.  (@tychoish)
-  - [libs/log] [\#6534](https://github.com/tendermint/tendermint/pull/6534) Remove the existing custom Tendermint logger backed by go-kit. The logging interface, `Logger`, remains. Tendermint still provides a default logger backed by the performant zerolog logger. (@alexanderbez)
-  - [libs/time] [\#6495](https://github.com/tendermint/tendermint/pull/6495) Move types/time to libs/time to improve consistency. (@tychoish)
-  - [mempool] [\#6529](https://github.com/tendermint/tendermint/pull/6529) The `Context` field has been removed from the `TxInfo` type. `CheckTx` now requires a `Context` argument. (@alexanderbez)
-  - [abci/client, proxy] [\#5673](https://github.com/tendermint/tendermint/pull/5673) `Async` funcs return an error, `Sync` and `Async` funcs accept `context.Context` (@melekes)
-  - [p2p] Remove unused function `MakePoWTarget`. (@erikgrinaker)
-  - [libs/bits] [\#5720](https://github.com/tendermint/tendermint/pull/5720) Validate `BitArray` in `FromProto`, which now returns an error (@melekes)
-  - [proto/p2p] Rename `DefaultNodeInfo` and `DefaultNodeInfoOther` to `NodeInfo` and `NodeInfoOther` (@erikgrinaker)
-  - [proto/p2p] Rename `NodeInfo.default_node_id` to `node_id` (@erikgrinaker)
-  - [libs/os] Kill() and {Must,}{Read,Write}File() functions have been removed. (@alessio)
-  - [store] [\#5848](https://github.com/tendermint/tendermint/pull/5848) Remove block store state in favor of using the db iterators directly (@cmwaters)
-  - [state] [\#5864](https://github.com/tendermint/tendermint/pull/5864) Use an iterator when pruning state (@cmwaters)
-  - [types] [\#6023](https://github.com/tendermint/tendermint/pull/6023) Remove `tm2pb.Header`, `tm2pb.BlockID`, `tm2pb.PartSetHeader` and `tm2pb.NewValidatorUpdate`.
-	- Each of the above types has a `ToProto` and `FromProto` method or function which replaced this logic.
-  - [light] [\#6054](https://github.com/tendermint/tendermint/pull/6054) Move `MaxRetryAttempt` option from client to provider.
-	- `NewWithOptions` now sets the max retry attempts and timeouts (@cmwaters)
-  - [all] [\#6077](https://github.com/tendermint/tendermint/pull/6077) Change spelling from British English to American (@cmwaters)
-	- Rename "Subscription.Cancelled()" to "Subscription.Canceled()" in libs/pubsub
-	- Rename "behaviour" pkg to "behavior" and internalized it in blocksync v2
-  - [rpc/client/http] [\#6176](https://github.com/tendermint/tendermint/pull/6176) Remove `endpoint` arg from `New`, `NewWithTimeout` and `NewWithClient` (@melekes)
-  - [rpc/client/http] [\#6176](https://github.com/tendermint/tendermint/pull/6176) Unexpose `WSEvents` (@melekes)
-  - [rpc/jsonrpc/client/ws_client] [\#6176](https://github.com/tendermint/tendermint/pull/6176) `NewWS` no longer accepts options (use `NewWSWithOptions` and `OnReconnect` funcs to configure the client) (@melekes)
-  - [internal/libs] [\#6366](https://github.com/tendermint/tendermint/pull/6366) Move `autofile`, `clist`,`fail`,`flowrate`, `protoio`, `sync`, `tempfile`, `test` and `timer` lib packages to an internal folder
-  - [libs/rand] [\#6364](https://github.com/tendermint/tendermint/pull/6364) Remove most of libs/rand in favour of standard lib's `math/rand` (@liamsi)
-  - [mempool] [\#6466](https://github.com/tendermint/tendermint/pull/6466) The original mempool reactor has been versioned as `v0` and moved to a sub-package under the root `mempool` package.
-	Some core types have been kept in the `mempool` package such as `TxCache` and it's implementations, the `Mempool` interface itself
-	and `TxInfo`. (@alexanderbez)
-  - [crypto/sr25519] [\#6526](https://github.com/tendermint/tendermint/pull/6526) Do not re-execute the Ed25519-style key derivation step when doing signing and verification.  The derivation is now done once and only once.  This breaks `sr25519.GenPrivKeyFromSecret` output compatibility. (@Yawning)
-  - [types] [\#6627](https://github.com/tendermint/tendermint/pull/6627) Move `NodeKey` to types to make the type public.
-  - [config] [\#6627](https://github.com/tendermint/tendermint/pull/6627) Extend `config` to contain methods `LoadNodeKeyID` and `LoadorGenNodeKeyID`
-  - [blocksync] [\#6755](https://github.com/tendermint/tendermint/pull/6755) Rename `FastSync` and `Blockchain` package to `BlockSync` (@cmwaters)
-
-- CLI/RPC/Config
-
-  - [pubsub/events] [\#6634](https://github.com/tendermint/tendermint/pull/6634) The `ResultEvent.Events` field is now of type `[]abci.Event` preserving event order instead of `map[string][]string`. (@alexanderbez)
-  - [config] [\#5598](https://github.com/tendermint/tendermint/pull/5598) The `test_fuzz` and `test_fuzz_config` P2P settings have been removed. (@erikgrinaker)
-  - [config] [\#5728](https://github.com/tendermint/tendermint/pull/5728) `fastsync.version = "v1"` is no longer supported (@melekes)
-  - [cli] [\#5772](https://github.com/tendermint/tendermint/pull/5772) `gen_node_key` prints JSON-encoded `NodeKey` rather than ID and does not save it to `node_key.json` (@melekes)
-  - [cli] [\#5777](https://github.com/tendermint/tendermint/pull/5777) use hyphen-case instead of snake_case for all cli commands and config parameters (@cmwaters)
-  - [rpc] [\#6019](https://github.com/tendermint/tendermint/pull/6019) standardise RPC errors and return the correct status code (@bipulprasad & @cmwaters)
-  - [rpc] [\#6168](https://github.com/tendermint/tendermint/pull/6168) Change default sorting to desc for `/tx_search` results (@melekes)
-  - [cli] [\#6282](https://github.com/tendermint/tendermint/pull/6282) User must specify the node mode when using `tendermint init` (@cmwaters)
-  - [state/indexer] [\#6382](https://github.com/tendermint/tendermint/pull/6382) reconstruct indexer, move txindex into the indexer package (@JayT106)
-  - [cli] [\#6372](https://github.com/tendermint/tendermint/pull/6372) Introduce `BootstrapPeers` as part of the new p2p stack. Peers to be connected on  startup (@cmwaters)
-  - [config] [\#6462](https://github.com/tendermint/tendermint/pull/6462) Move `PrivValidator` configuration out of `BaseConfig` into its own section. (@tychoish)
-  - [rpc] [\#6610](https://github.com/tendermint/tendermint/pull/6610) Add MaxPeerBlockHeight into /status rpc call (@JayT106)
-  - [blocksync/rpc] [\#6620](https://github.com/tendermint/tendermint/pull/6620) Add TotalSyncedTime & RemainingTime to SyncInfo in /status RPC  (@JayT106)
-  - [rpc/grpc] [\#6725](https://github.com/tendermint/tendermint/pull/6725) Mark gRPC in the RPC layer as deprecated.
-  - [blocksync/v2] [\#6730](https://github.com/tendermint/tendermint/pull/6730) Fast Sync v2 is deprecated, please use v0
-  - [rpc] Add genesis_chunked method to support paginated and parallel fetching of large genesis documents.
-  - [rpc/jsonrpc/server] [\#6785](https://github.com/tendermint/tendermint/pull/6785) `Listen` function updated to take an `int` argument, `maxOpenConnections`, instead of an entire config object. (@williambanfield)
-  - [rpc] [\#6820](https://github.com/tendermint/tendermint/pull/6820) Update RPC methods to reflect changes in the p2p layer, disabling support for `UnsafeDialPeers` and `UnsafeDialPeers` when used with the new p2p layer, and changing the response format of the peer list in `NetInfo` for all users.
-  - [cli] [\#6854](https://github.com/tendermint/tendermint/pull/6854) Remove deprecated snake case commands. (@tychoish)
-  - [tools] [\#6498](https://github.com/tendermint/tendermint/pull/6498) Set OS home dir to instead of the hardcoded PATH. (@JayT106)
-  - [cli/indexer] [\#6676](https://github.com/tendermint/tendermint/pull/6676) Reindex events command line tooling. (@JayT106)
-
-- Apps
-
-  - [ABCI] [\#6408](https://github.com/tendermint/tendermint/pull/6408) Change the `key` and `value` fields from `[]byte` to `string` in the `EventAttribute` type. (@alexanderbez)
-  - [ABCI] [\#5447](https://github.com/tendermint/tendermint/pull/5447) Remove `SetOption` method from `ABCI.Client` interface
-  - [ABCI] [\#5447](https://github.com/tendermint/tendermint/pull/5447) Reset `Oneof` indexes for  `Request` and `Response`.
-  - [ABCI] [\#5818](https://github.com/tendermint/tendermint/pull/5818) Use protoio for msg length delimitation. Migrates from int64 to uint64 length delimiters.
-  - [ABCI] [\#3546](https://github.com/tendermint/tendermint/pull/3546) Add `mempool_error` field to `ResponseCheckTx`. This field will contain an error string if Tendermint encountered an error while adding a transaction to the mempool. (@williambanfield)
-  - [Version] [\#6494](https://github.com/tendermint/tendermint/pull/6494) `TMCoreSemVer` has been renamed to `TMVersion`.
-	- It is not required any longer to set ldflags to set version strings
-  - [abci/counter] [\#6684](https://github.com/tendermint/tendermint/pull/6684) Delete counter example app
-
-- Data Storage
-  - [store/state/evidence/light] [\#5771](https://github.com/tendermint/tendermint/pull/5771) Use an order-preserving varint key encoding (@cmwaters)
-  - [mempool] [\#6396](https://github.com/tendermint/tendermint/pull/6396) Remove mempool's write ahead log (WAL), (previously unused by the tendermint code). (@tychoish)
-  - [state] [\#6541](https://github.com/tendermint/tendermint/pull/6541) Move pruneBlocks from consensus/state to state/execution. (@JayT106)
+- [config/indexer] \#6411 Introduce support for custom event indexing data sources, specifically PostgreSQL. (@JayT106)
+- [blocksync/event] \#6619 Emit blocksync status event when switching consensus/blocksync (@JayT106)
+- [statesync/event] \#6700 Emit statesync status start/end event (@JayT106)
+- [inspect] \#6785 Add a new `inspect` command for introspecting the state and block store of a crashed tendermint node. (@williambanfield)
 
 ### IMPROVEMENTS
 
-- [libs/log] Console log formatting changes as a result of [\#6534](https://github.com/tendermint/tendermint/pull/6534) and [\#6589](https://github.com/tendermint/tendermint/pull/6589). (@tychoish)
-- [statesync] [\#6566](https://github.com/tendermint/tendermint/pull/6566) Allow state sync fetchers and request timeout to be configurable. (@alexanderbez)
-- [types] [\#6478](https://github.com/tendermint/tendermint/pull/6478) Add `block_id` to `newblock` event (@jeebster)
-- [crypto/ed25519] [\#5632](https://github.com/tendermint/tendermint/pull/5632) Adopt zip215 `ed25519` verification. (@marbar3778)
-- [crypto/ed25519] [\#6526](https://github.com/tendermint/tendermint/pull/6526) Use [curve25519-voi](https://github.com/oasisprotocol/curve25519-voi) for `ed25519` signing and verification. (@Yawning)
-- [crypto/sr25519] [\#6526](https://github.com/tendermint/tendermint/pull/6526) Use [curve25519-voi](https://github.com/oasisprotocol/curve25519-voi) for `sr25519` signing and verification. (@Yawning)
-- [privval] [\#5603](https://github.com/tendermint/tendermint/pull/5603) Add `--key` to `init`, `gen_validator`, `testnet` & `unsafe_reset_priv_validator` for use in generating `secp256k1` keys.
-- [privval] [\#5725](https://github.com/tendermint/tendermint/pull/5725) Add gRPC support to private validator.
-- [privval] [\#5876](https://github.com/tendermint/tendermint/pull/5876) `tendermint show-validator` will query the remote signer if gRPC is being used (@marbar3778)
-- [abci/client] [\#5673](https://github.com/tendermint/tendermint/pull/5673) `Async` requests return an error if queue is full (@melekes)
-- [mempool] [\#5673](https://github.com/tendermint/tendermint/pull/5673) Cancel `CheckTx` requests if RPC client disconnects or times out (@melekes)
-- [abci] [\#5706](https://github.com/tendermint/tendermint/pull/5706) Added `AbciVersion` to `RequestInfo` allowing applications to check ABCI version when connecting to Tendermint. (@marbar3778)
-- [blocksync/v1] [\#5728](https://github.com/tendermint/tendermint/pull/5728) Remove blocksync v1 (@melekes)
-- [blocksync/v0] [\#5741](https://github.com/tendermint/tendermint/pull/5741) Relax termination conditions and increase sync timeout (@melekes)
-- [cli] [\#5772](https://github.com/tendermint/tendermint/pull/5772) `gen_node_key` output now contains node ID (`id` field) (@melekes)
-- [blocksync/v2] [\#5774](https://github.com/tendermint/tendermint/pull/5774) Send status request when new peer joins (@melekes)
-- [store] [\#5888](https://github.com/tendermint/tendermint/pull/5888) store.SaveBlock saves using batches instead of transactions for now to improve ACID properties. This is a quick fix for underlying issues around tm-db and ACID guarantees. (@githubsands)
-- [consensus] [\#5987](https://github.com/tendermint/tendermint/pull/5987) and [\#5792](https://github.com/tendermint/tendermint/pull/5792) Remove the `time_iota_ms` consensus parameter. Merge `tmproto.ConsensusParams` and `abci.ConsensusParams`. (@marbar3778, @valardragon)
-- [types] [\#5994](https://github.com/tendermint/tendermint/pull/5994) Reduce the use of protobuf types in core logic. (@marbar3778)
+- [libs/log] Console log formatting changes as a result of \#6534 and \#6589. (@tychoish)
+- [statesync] \#6566 Allow state sync fetchers and request timeout to be configurable. (@alexanderbez)
+- [types] \#6478 Add `block_id` to `newblock` event (@jeebster)
+- [crypto/ed25519] \#5632 Adopt zip215 `ed25519` verification. (@marbar3778)
+- [crypto/ed25519] \#6526 Use [curve25519-voi](https://github.com/oasisprotocol/curve25519-voi) for `ed25519` signing and verification. (@Yawning)
+- [crypto/sr25519] \#6526 Use [curve25519-voi](https://github.com/oasisprotocol/curve25519-voi) for `sr25519` signing and verification. (@Yawning)
+- [privval] \#5603 Add `--key` to `init`, `gen_validator`, `testnet` & `unsafe_reset_priv_validator` for use in generating `secp256k1` keys.
+- [privval] \#5725 Add gRPC support to private validator.
+- [privval] \#5876 `tendermint show-validator` will query the remote signer if gRPC is being used (@marbar3778)
+- [abci/client] \#5673 `Async` requests return an error if queue is full (@melekes)
+- [mempool] \#5673 Cancel `CheckTx` requests if RPC client disconnects or times out (@melekes)
+- [abci] \#5706 Added `AbciVersion` to `RequestInfo` allowing applications to check ABCI version when connecting to Tendermint. (@marbar3778)
+- [blocksync/v1] \#5728 Remove blocksync v1 (@melekes)
+- [blocksync/v0] \#5741 Relax termination conditions and increase sync timeout (@melekes)
+- [cli] \#5772 `gen_node_key` output now contains node ID (`id` field) (@melekes)
+- [blocksync/v2] \#5774 Send status request when new peer joins (@melekes)
+- [store] \#5888 store.SaveBlock saves using batches instead of transactions for now to improve ACID properties. This is a quick fix for underlying issues around tm-db and ACID guarantees. (@githubsands)
+- [consensus] \#5987 and \#5792 Remove the `time_iota_ms` consensus parameter. Merge `tmproto.ConsensusParams` and `abci.ConsensusParams`. (@marbar3778, @valardragon)
+- [types] \#5994 Reduce the use of protobuf types in core logic. (@marbar3778)
   - `ConsensusParams`, `BlockParams`, `ValidatorParams`, `EvidenceParams`, `VersionParams`, `sm.Version` and `version.Consensus` have become native types. They still utilize protobuf when being sent over the wire or written to disk.
-- [rpc/client/http] [\#6163](https://github.com/tendermint/tendermint/pull/6163) Do not drop events even if the `out` channel is full (@melekes)
-- [node] [\#6059](https://github.com/tendermint/tendermint/pull/6059) Validate and complete genesis doc before saving to state store (@silasdavis)
-- [state] [\#6067](https://github.com/tendermint/tendermint/pull/6067) Batch save state data (@githubsands & @cmwaters)
-- [crypto] [\#6120](https://github.com/tendermint/tendermint/pull/6120) Implement batch verification interface for ed25519 and sr25519. (@marbar3778)
-- [types] [\#6120](https://github.com/tendermint/tendermint/pull/6120) use batch verification for verifying commits signatures.
+- [rpc/client/http] \#6163 Do not drop events even if the `out` channel is full (@melekes)
+- [node] \#6059 Validate and complete genesis doc before saving to state store (@silasdavis)
+- [state] \#6067 Batch save state data (@githubsands & @cmwaters)
+- [crypto] \#6120 Implement batch verification interface for ed25519 and sr25519. (@marbar3778)
+- [types] \#6120 use batch verification for verifying commits signatures.
   - If the key type supports the batch verification API it will try to batch verify. If the verification fails we will single verify each signature.
-- [privval/file] [\#6185](https://github.com/tendermint/tendermint/pull/6185) Return error on `LoadFilePV`, `LoadFilePVEmptyState`. Allows for better programmatic control of Tendermint.
-- [privval] [\#6240](https://github.com/tendermint/tendermint/pull/6240) Add `context.Context` to privval interface.
-- [rpc] [\#6265](https://github.com/tendermint/tendermint/pull/6265) set cache control in http-rpc response header (@JayT106)
-- [statesync] [\#6378](https://github.com/tendermint/tendermint/pull/6378) Retry requests for snapshots and add a minimum discovery time (5s) for new snapshots.
-- [node/state] [\#6370](https://github.com/tendermint/tendermint/pull/6370) graceful shutdown in the consensus reactor (@JayT106)
-- [crypto/merkle] [\#6443](https://github.com/tendermint/tendermint/pull/6443) Improve HashAlternatives performance (@cuonglm)
-- [crypto/merkle] [\#6513](https://github.com/tendermint/tendermint/pull/6513) Optimize HashAlternatives (@marbar3778)
-- [p2p/pex] [\#6509](https://github.com/tendermint/tendermint/pull/6509) Improve addrBook.hash performance (@cuonglm)
-- [consensus/metrics] [\#6549](https://github.com/tendermint/tendermint/pull/6549) Change block_size gauge to a histogram for better observability over time (@marbar3778)
-- [statesync] [\#6587](https://github.com/tendermint/tendermint/pull/6587) Increase chunk priority and re-request chunks that don't arrive (@cmwaters)
-- [state/privval] [\#6578](https://github.com/tendermint/tendermint/pull/6578) No GetPubKey retry beyond the proposal/voting window (@JayT106)
-- [rpc] [\#6615](https://github.com/tendermint/tendermint/pull/6615) Add TotalGasUsed to block_results response (@crypto-facs)
-- [cmd/tendermint/commands] [\#6623](https://github.com/tendermint/tendermint/pull/6623) replace `$HOME/.some/test/dir` with `t.TempDir` (@tanyabouman)
+- [privval/file] \#6185 Return error on `LoadFilePV`, `LoadFilePVEmptyState`. Allows for better programmatic control of Tendermint.
+- [privval] \#6240 Add `context.Context` to privval interface.
+- [rpc] \#6265 set cache control in http-rpc response header (@JayT106)
+- [statesync] \#6378 Retry requests for snapshots and add a minimum discovery time (5s) for new snapshots.
+- [node/state] \#6370 graceful shutdown in the consensus reactor (@JayT106)
+- [crypto/merkle] \#6443 Improve HashAlternatives performance (@cuonglm)
+- [crypto/merkle] \#6513 Optimize HashAlternatives (@marbar3778)
+- [p2p/pex] \#6509 Improve addrBook.hash performance (@cuonglm)
+- [consensus/metrics] \#6549 Change block_size gauge to a histogram for better observability over time (@marbar3778)
+- [statesync] \#6587 Increase chunk priority and re-request chunks that don't arrive (@cmwaters)
+- [state/privval] \#6578 No GetPubKey retry beyond the proposal/voting window (@JayT106)
+- [rpc] \#6615 Add TotalGasUsed to block_results response (@crypto-facs)
+- [cmd/tendermint/commands] \#6623 replace `$HOME/.some/test/dir` with `t.TempDir` (@tanyabouman)
 - [statesync] \6807 Implement P2P state provider as an alternative to RPC (@cmwaters)
 
-## v0.34.16
-
-Special thanks to external contributors on this release: @yihuang
-
 ### BUG FIXES
 
-- [consensus] [\#7617](https://github.com/tendermint/tendermint/issues/7617) calculate prevote message delay metric (backport #7551) (@williambanfield).
-- [consensus] [\#7631](https://github.com/tendermint/tendermint/issues/7631) check proposal non-nil in prevote message delay metric (backport #7625) (@williambanfield).
-- [statesync] [\#7885](https://github.com/tendermint/tendermint/issues/7885) statesync: assert app version matches (backport #7856) (@cmwaters).
-- [statesync] [\#7881](https://github.com/tendermint/tendermint/issues/7881) fix app hash in state rollback (backport #7837) (@cmwaters).
-- [cli] [#7837](https://github.com/tendermint/tendermint/pull/7837) fix app hash in state rollback. (@yihuang).
-
-## v0.34.15
-
-Special thanks to external contributors on this release: @thanethomson
-
-### BUG FIXES
-
-- [\#7368](https://github.com/tendermint/tendermint/issues/7368) cmd: add integration test for rollback functionality (@cmwaters).
-- [\#7309](https://github.com/tendermint/tendermint/issues/7309) pubsub: Report a non-nil error when shutting down (fixes #7306).
-- [\#7057](https://github.com/tendermint/tendermint/pull/7057) Import Postgres driver support for the psql indexer (@creachadair).
-- [\#7106](https://github.com/tendermint/tendermint/pull/7106) Revert mutex change to ABCI Clients (@tychoish).
-
-### IMPROVEMENTS
-
-- [config] [\#7230](https://github.com/tendermint/tendermint/issues/7230) rpc: Add experimental config params to allow for subscription buffer size control (@thanethomson).
-
-## v0.34.14
-
-This release backports the `rollback` feature to allow recovery in the event of an incorrect app hash.
-
-### FEATURES
-
-- [\#6982](https://github.com/tendermint/tendermint/pull/6982) The tendermint binary now has built-in suppport for running the end-to-end test application (with state sync support) (@cmwaters).
-- [cli] [#7033](https://github.com/tendermint/tendermint/pull/7033) Add a `rollback` command to rollback to the previous tendermint state. This may be useful in the event of non-determinstic app hash or when reverting an upgrade. @cmwaters
-
-### IMPROVEMENTS
-
-- [\#7103](https://github.com/tendermint/tendermint/pull/7104) Remove IAVL dependency (backport of #6550) (@cmwaters)
-
-### BUG FIXES
-
-- [\#7057](https://github.com/tendermint/tendermint/pull/7057) Import Postgres driver support for the psql indexer (@creachadair).
-- [ABCI] [\#7110](https://github.com/tendermint/tendermint/issues/7110) Revert "change client to use multi-reader mutexes (#6873)" (@tychoish).
+- [privval] \#5638 Increase read/write timeout to 5s and calculate ping interval based on it (@JoeKash)
+- [evidence] \#6375 Fix bug with inconsistent LightClientAttackEvidence hashing (cmwaters)
+- [rpc] \#6507 Ensure RPC client can handle URLs without ports (@JayT106)
+- [statesync] \#6463 Adds Reverse Sync feature to fetch historical light blocks after state sync in order to verify any evidence (@cmwaters)
+- [blocksync] \#6590 Update the metrics during blocksync (@JayT106)
 
 ## v0.34.13
 
@@ -1013,7 +894,7 @@ and a validator address plus a timestamp. Note we may remove the validator
 address & timestamp fields in the future (see ADR-25).
 
 `lite2` package has been added to solve `lite` issues and introduce weak
-subjectivity interface. Refer to the [spec](./spec/consensus/light-client/) for complete details.
+subjectivity interface. Refer to the [spec](https://github.com/tendermint/spec/blob/master/spec/consensus/light-client.md) for complete details.
 `lite` package is now deprecated and will be removed in v0.34 release.
 
 ### BREAKING CHANGES:
@@ -2073,7 +1954,7 @@ For more, see issues marked
 
 This release also includes a fix to prevent Tendermint from including the same
 piece of evidence in more than one block. This issue was reported by @chengwenxi in our
-[bug bounty program](https://hackerone.com/cosmos).
+[bug bounty program](https://hackerone.com/tendermint).
 
 ### BREAKING CHANGES:
 
@@ -2566,7 +2447,7 @@ Special thanks to external contributors on this release:
 @james-ray, @overbool, @phymbert, @Slamper, @Uzair1995, @yutianwu.
 
 Special thanks to @Slamper for a series of bug reports in our [bug bounty
-program](https://hackerone.com/cosmos) which are fixed in this release.
+program](https://hackerone.com/tendermint) which are fixed in this release.
 
 This release is primarily about adding Version fields to various data structures,
 optimizing consensus messages for signing and verification in

CHANGELOG_PENDING.md

@@ -1,81 +1,26 @@
 # Unreleased Changes
 
-Friendly reminder: We have a [bug bounty program](https://hackerone.com/cosmos).
-
 ## vX.X
 
-Month, DD, YYYY
-
 Special thanks to external contributors on this release:
 
+Friendly reminder: We have a [bug bounty program](https://hackerone.com/tendermint).
+
 ### BREAKING CHANGES
 
 - CLI/RPC/Config
 
-  - [rpc] \#7121 Remove the deprecated gRPC interface to the RPC service. (@creachadair)
-  - [blocksync] \#7159 Remove support for disabling blocksync in any circumstance. (@tychoish)
-  - [mempool] \#7171 Remove legacy mempool implementation. (@tychoish)
-  - [rpc] \#7575 Rework how RPC responses are written back via HTTP. (@creachadair)
-  - [rpc] \#7713 Remove unused options for websocket clients. (@creachadair)
-  - [config] \#7930 Add new event subscription options and defaults. (@creachadair)
-  - [rpc] \#7982 Add new Events interface and deprecate Subscribe. (@creachadair)
-
 - Apps
 
-  - [tendermint/spec] \#7804 Migrate spec from [spec repo](https://github.com/tendermint/spec).
-  - [abci] \#7984 Remove the locks preventing concurrent use of ABCI applications by Tendermint. (@tychoish)
-
 - P2P Protocol
 
-  - [p2p] \#7035 Remove legacy P2P routing implementation and associated configuration options. (@tychoish)
-  - [p2p] \#7265 Peer manager reduces peer score for each failed dial attempts for peers that have not successfully dialed. (@tychoish)
-  - [p2p] [\#7594](https://github.com/tendermint/tendermint/pull/7594) always advertise self, to enable mutual address discovery. (@altergui)
-
 - Go API
 
-  - [rpc] \#7474 Remove the "URI" RPC client. (@creachadair)
-  - [libs/pubsub] \#7451 Internalize the pubsub packages. (@creachadair)
-  - [libs/sync] \#7450 Internalize and remove the library. (@creachadair)
-  - [libs/async] \#7449 Move library to internal. (@creachadair)
-  - [pubsub] \#7231 Remove unbuffered subscriptions and rework the Subscription interface. (@creachadair)
-  - [eventbus] \#7231 Move the EventBus type to the internal/eventbus package. (@creachadair)
-  - [blocksync] \#7046 Remove v2 implementation of the blocksync service and recactor, which was disabled in the previous release. (@tychoish)
-  - [p2p] \#7064 Remove WDRR queue implementation. (@tychoish)
-  - [config] \#7169 `WriteConfigFile` now returns an error. (@tychoish)
-  - [libs/service] \#7288 Remove SetLogger method on `service.Service` interface. (@tychoish)
-  - [abci/client] \#7607 Simplify client interface (removes most "async" methods). (@creachadair)
-  - [libs/json] \#7673 Remove the libs/json (tmjson) library. (@creachadair)
-
 - Blockchain Protocol
 
 ### FEATURES
 
-- [rpc] [\#7270](https://github.com/tendermint/tendermint/pull/7270) Add `header` and `header_by_hash` RPC Client queries. (@fedekunze)
-- [rpc] [\#7701] Add `ApplicationInfo` to `status` rpc call which contains the application version. (@jonasbostoen)
-- [cli] [#7033](https://github.com/tendermint/tendermint/pull/7033) Add a `rollback` command to rollback to the previous tendermint state in the event of non-determinstic app hash or reverting an upgrade.
-- [mempool, rpc] \#7041  Add removeTx operation to the RPC layer. (@tychoish)
-- [consensus] \#7354 add a new `synchrony` field to the `ConsensusParameter` struct for controlling the parameters of the proposer-based timestamp algorithm. (@williambanfield)
-- [consensus] \#7376 Update the proposal logic per the Propose-based timestamps specification so that the proposer will wait for the previous block time to occur before proposing the next block. (@williambanfield)
-- [consensus] \#7391 Use the proposed block timestamp as the proposal timestamp. Update the block validation logic to ensure that the proposed block's timestamp matches the timestamp in the proposal message. (@williambanfield)
-- [consensus] \#7415 Update proposal validation logic to Prevote nil if a proposal does not meet the conditions for Timelyness per the proposer-based timestamp specification. (@anca)
-- [consensus] \#7382 Update block validation to no longer require the block timestamp to be the median of the timestamps of the previous commit. (@anca)
-- [consensus] \#7711 Use the proposer timestamp for the first height instead of the genesis time. Chains will still start consensus at the genesis time. (@anca)
-
 ### IMPROVEMENTS
 
-- [internal/protoio] \#7325 Optimized `MarshalDelimited` by inlining the common case and using a `sync.Pool` in the worst case. (@odeke-em)
-- [consensus] \#6969 remove logic to 'unlock' a locked block.
-- [evidence] \#7700 Evidence messages contain single Evidence instead of EvidenceList (@jmalicevic)
-- [evidence] \#7802 Evidence pool emits events when evidence is validated and updates a metric when the number of evidence in the evidence pool changes. (@jmalicevic)
-- [pubsub] \#7319 Performance improvements for the event query API (@creachadair)
-- [node] \#7521 Define concrete type for seed node implementation (@spacech1mp)
-- [rpc] \#7612 paginate mempool /unconfirmed_txs rpc endpoint (@spacech1mp)
-- [light] [\#7536](https://github.com/tendermint/tendermint/pull/7536) rpc /status call returns info about the light client (@jmalicevic)
-- [types] \#7765 Replace EvidenceData with EvidenceList to avoid unnecessary nesting of evidence fields within a block. (@jmalicevic)
-
 ### BUG FIXES
 
-- fix: assignment copies lock value in `BitArray.UnmarshalJSON()` (@lklimek)
-- [light] \#7640 Light Client: fix absence proof verification (@ashcherbakov)
-- [light] \#7641 Light Client: fix querying against the latest height (@ashcherbakov)
-- [cli] [#7837](https://github.com/tendermint/tendermint/pull/7837) fix app hash in state rollback. (@yihuang)

CONTRIBUTING.md

@@ -109,7 +109,7 @@ We use [Protocol Buffers](https://developers.google.com/protocol-buffers) along
 
 For linting, checking breaking changes and generating proto stubs, we use [buf](https://buf.build/). If you would like to run linting and check if the changes you have made are breaking then you will need to have docker running locally. Then the linting cmd will be `make proto-lint` and the breaking changes check will be `make proto-check-breaking`.
 
-We use [Docker](https://www.docker.com/) to generate the protobuf stubs. To generate the stubs yourself, make sure docker is running then run `make proto-gen`. This command uses the spec repo to get the necessary protobuf files for generating the go code. If you are modifying the proto files manually for changes in the core data structures, you will need to clone them into the go repo and comment out lines 22-37 of the file `./scripts/protocgen.sh`.
+We use [Docker](https://www.docker.com/) to generate the protobuf stubs. To generate the stubs yourself, make sure docker is running then run `make proto-gen`.
 
 ### Visual Studio Code
 
@@ -227,6 +227,141 @@ Fixes #nnnn
 
 Each PR should have one commit once it lands on `master`; this can be accomplished by using the "squash and merge" button on Github. Be sure to edit your commit message, though!
 
+### Release procedure
+
+#### A note about backport branches
+Tendermint's `master` branch is under active development.
+Releases are specified using tags and are built from long-lived "backport" branches.
+Each release "line" (e.g. 0.34 or 0.33) has its own long-lived backport branch,
+and the backport branches have names like `v0.34.x` or `v0.33.x`
+(literally, `x`; it is not a placeholder in this case).
+
+As non-breaking changes land on `master`, they should also be backported (cherry-picked)
+to these backport branches.
+
+We use Mergify's [backport feature](https://mergify.io/features/backports) to automatically backport
+to the needed branch. There should be a label for any backport branch that you'll be targeting.
+To notify the bot to backport a pull request, mark the pull request with
+the label `S:backport-to-<backport_branch>`.
+Once the original pull request is merged, the bot will try to cherry-pick the pull request
+to the backport branch. If the bot fails to backport, it will open a pull request.
+The author of the original pull request is responsible for solving the conflicts and
+merging the pull request.
+
+#### Creating a backport branch
+If this is the first release candidate for a major release, you get to have the honor of creating
+the backport branch!
+
+Note that, after creating the backport branch, you'll also need to update the tags on `master`
+so that `go mod` is able to order the branches correctly. You should tag `master` with a "dev" tag
+that is "greater than" the backport branches tags. See #6072 for more context.
+
+In the following example, we'll assume that we're making a backport branch for
+the 0.35.x line.
+
+1. Start on `master`
+2. Create the backport branch:
+   `git checkout -b v0.35.x`
+3. Go back to master and tag it as the dev branch for the _next_ major release and push it back up:
+   `git tag -a v0.36.0-dev; git push v0.36.0-dev`
+4. Create a new workflow to run the e2e nightlies for this backport branch.
+   (See https://github.com/tendermint/tendermint/blob/master/.github/workflows/e2e-nightly-34x.yml
+   for an example.)
+
+#### Release candidates
+
+Before creating an official release, especially a major release, we may want to create a
+release candidate (RC) for our friends and partners to test out. We use git tags to
+create RCs, and we build them off of backport branches.
+
+Tags for RCs should follow the "standard" release naming conventions, with `-rcX` at the end
+(for example, `v0.35.0-rc0`).
+
+(Note that branches and tags _cannot_ have the same names, so it's important that these branches
+have distinct names from the tags/release names.)
+
+If this is the first RC for a major release, you'll have to make a new backport branch (see above).
+Otherwise:
+
+1. Start from the backport branch (e.g. `v0.35.x`).
+1. Run the integration tests and the e2e nightlies
+   (which can be triggered from the Github UI;
+   e.g., https://github.com/tendermint/tendermint/actions/workflows/e2e-nightly-34x.yml).
+1. Prepare the changelog:
+   - Move the changes included in `CHANGELOG_PENDING.md` into `CHANGELOG.md`.
+   - Run `python ./scripts/linkify_changelog.py CHANGELOG.md` to add links for
+     all PRs
+   - Ensure that UPGRADING.md is up-to-date and includes notes on any breaking changes
+      or other upgrading flows.
+   - Bump TMVersionDefault version in  `version.go`
+   - Bump P2P and block protocol versions in  `version.go`, if necessary
+   - Bump ABCI protocol version in `version.go`, if necessary
+1. Open a PR with these changes against the backport branch.
+1. Once these changes have landed on the backport branch, be sure to pull them back down locally.
+2. Once you have the changes locally, create the new tag, specifying a name and a tag "message":
+   `git tag -a v0.35.0-rc0 -m "Release Candidate v0.35.0-rc0`
+3. Push the tag back up to origin:
+   `git push origin v0.35.0-rc0`
+   Now the tag should be available on the repo's releases page.
+4. Future RCs will continue to be built off of this branch.
+
+Note that this process should only be used for "true" RCs--
+release candidates that, if successful, will be the next release.
+For more experimental "RCs," create a new, short-lived branch and tag that instead.
+
+#### Major release
+
+This major release process assumes that this release was preceded by release candidates.
+If there were no release candidates, begin by creating a backport branch, as described above.
+
+1. Start on the backport branch (e.g. `v0.35.x`)
+2. Run integration tests and the e2e nightlies.
+3. Prepare the release:
+   - "Squash" changes from the changelog entries for the RCs into a single entry,
+      and add all changes included in `CHANGELOG_PENDING.md`.
+      (Squashing includes both combining all entries, as well as removing or simplifying
+      any intra-RC changes. It may also help to alphabetize the entries by package name.)
+   - Run `python ./scripts/linkify_changelog.py CHANGELOG.md` to add links for
+     all PRs
+   - Ensure that UPGRADING.md is up-to-date and includes notes on any breaking changes
+      or other upgrading flows.
+   - Bump TMVersionDefault version in  `version.go`
+   - Bump P2P and block protocol versions in  `version.go`, if necessary
+   - Bump ABCI protocol version in `version.go`, if necessary
+4. Open a PR with these changes against the backport branch.
+5. Once these changes are on the backport branch, push a tag with prepared release details.
+   This will trigger the actual release `v0.35.0`.
+   - `git tag -a v0.35.0 -m 'Release v0.35.0'`
+   - `git push origin v0.35.0`
+7. Make sure that `master` is updated with the latest `CHANGELOG.md`, `CHANGELOG_PENDING.md`, and `UPGRADING.md`.
+
+#### Minor release (point releases)
+
+Minor releases are done differently from major releases: They are built off of long-lived backport branches, rather than from master.
+As non-breaking changes land on `master`, they should also be backported (cherry-picked) to these backport branches.
+
+Minor releases don't have release candidates by default, although any tricky changes may merit a release candidate.
+
+To create a minor release:
+
+1. Checkout the long-lived backport branch: `git checkout v0.35.x`
+2. Run integration tests (`make test_integrations`) and the nightlies.
+3. Check out a new branch and prepare the release:
+   - Copy `CHANGELOG_PENDING.md` to top of `CHANGELOG.md`
+   - Run `python ./scripts/linkify_changelog.py CHANGELOG.md` to add links for all issues
+   - Run `bash ./scripts/authors.sh` to get a list of authors since the latest release, and add the GitHub aliases of external contributors to the top of the CHANGELOG. To lookup an alias from an email, try `bash ./scripts/authors.sh <email>`
+   - Reset the `CHANGELOG_PENDING.md`
+   - Bump the ABCI version number, if necessary.
+     (Note that ABCI follows semver, and that ABCI versions are the only versions
+     which can change during minor releases, and only field additions are valid minor changes.)
+4. Open a PR with these changes that will land them back on `v0.35.x`
+5. Once this change has landed on the backport branch, make sure to pull it locally, then push a tag.
+   - `git tag -a v0.35.1 -m 'Release v0.35.1'`
+   - `git push origin v0.35.1`
+6. Create a pull request back to master with the CHANGELOG & version changes from the latest release.
+   - Remove all `R:minor` labels from the pull requests that were included in the release.
+   - Do not merge the backport branch into master.
+
 ## Testing
 
 ### Unit tests

DOCKER/Dockerfile

@@ -1,5 +1,5 @@
 # stage 1 Generate Tendermint Binary
-FROM golang:1.17-alpine as builder
+FROM golang:1.16-alpine as builder
 RUN apk update && \
     apk upgrade && \
     apk --no-cache add make
@@ -8,7 +8,7 @@ WORKDIR /tendermint
 RUN make build-linux
 
 # stage 2
-FROM golang:1.17-alpine
+FROM golang:1.15-alpine
 LABEL maintainer="hello@tendermint.com"
 
 # Tendermint will be looking for the genesis file in /tendermint/config/genesis.json

Makefile

@@ -1,5 +1,6 @@
 #!/usr/bin/make -f
 
+PACKAGES=$(shell go list ./...)
 BUILDDIR ?= $(CURDIR)/build
 
 BUILD_TAGS?=tendermint
@@ -13,8 +14,8 @@ endif
 
 LD_FLAGS = -X github.com/tendermint/tendermint/version.TMVersion=$(VERSION)
 BUILD_FLAGS = -mod=readonly -ldflags "$(LD_FLAGS)"
-BUILD_IMAGE := ghcr.io/tendermint/docker-build-proto
-DOCKER_PROTO_BUILDER := docker run -v $(shell pwd):/workspace --workdir /workspace $(BUILD_IMAGE)
+HTTPS_GIT := https://github.com/tendermint/tendermint.git
+DOCKER_BUF := docker run -v $(shell pwd):/workspace --workdir /workspace bufbuild/buf
 CGO_ENABLED ?= 0
 
 # handle nostrip
@@ -73,46 +74,35 @@ install:
 
 $(BUILDDIR)/:
 	mkdir -p $@
-# The Docker image containing the generator, formatter, and linter.
-# This is generated by proto/Dockerfile. To update tools, make changes
-# there and run the Build & Push Proto Builder Image workflow.
-IMAGE := ghcr.io/tendermint/docker-build-proto:latest
-DOCKER_PROTO_BUILDER := docker run -v $(shell pwd):/workspace --workdir /workspace $(IMAGE)
-HTTPS_GIT := https://github.com/tendermint/tendermint.git
 
 ###############################################################################
 ###                                Protobuf                                 ###
 ###############################################################################
 
-proto-all: proto-lint proto-check-breaking
+proto-all: proto-gen proto-lint proto-check-breaking
 .PHONY: proto-all
 
 proto-gen:
+	@docker pull -q tendermintdev/docker-build-proto
 	@echo "Generating Protobuf files"
-	@$(DOCKER_PROTO_BUILDER) buf generate --template=./buf.gen.yaml --config ./buf.yaml
+	@docker run -v $(shell pwd):/workspace --workdir /workspace tendermintdev/docker-build-proto sh ./scripts/protocgen.sh
 .PHONY: proto-gen
 
-# TODO: Should be removed when work on ABCI++ is complete.
-# For more information, see https://github.com/tendermint/tendermint/issues/8066
-abci-proto-gen:
-	./scripts/abci-gen.sh
-.PHONY: abci-proto-gen
-
 proto-lint:
-	@$(DOCKER_PROTO_BUILDER) buf lint --error-format=json --config ./buf.yaml
+	@$(DOCKER_BUF) check lint --error-format=json
 .PHONY: proto-lint
 
 proto-format:
 	@echo "Formatting Protobuf files"
-	@$(DOCKER_PROTO_BUILDER) find . -name '*.proto' -path "./proto/*" -exec clang-format -i {} \;
+	docker run -v $(shell pwd):/workspace --workdir /workspace tendermintdev/docker-build-proto find ./ -not -path "./third_party/*" -name *.proto -exec clang-format -i {} \;
 .PHONY: proto-format
 
 proto-check-breaking:
-	@$(DOCKER_PROTO_BUILDER) buf breaking --against .git --config ./buf.yaml
+	@$(DOCKER_BUF) check breaking --against-input .git#branch=master
 .PHONY: proto-check-breaking
 
 proto-check-breaking-ci:
-	@$(DOCKER_PROTO_BUILDER) buf breaking --against $(HTTPS_GIT) --config ./buf.yaml
+	@$(DOCKER_BUF) check breaking --against-input $(HTTPS_GIT)#branch=master
 .PHONY: proto-check-breaking-ci
 
 ###############################################################################
@@ -128,7 +118,7 @@ install_abci:
 .PHONY: install_abci
 
 ###############################################################################
-###				Privval Server                              ###
+###                           	Privval Server                              ###
 ###############################################################################
 
 build_privval_server:
@@ -141,11 +131,11 @@ generate_test_cert:
 	# generate server cerificate
 	@certstrap request-cert -cn server -ip 127.0.0.1
 	# self-sign server cerificate with rootCA
-	@certstrap sign server --CA "root CA"
+	@certstrap sign server --CA "root CA" 
 	# generate client cerificate
 	@certstrap request-cert -cn client -ip 127.0.0.1
 	# self-sign client cerificate with rootCA
-	@certstrap sign client --CA "root CA"
+	@certstrap sign client --CA "root CA" 
 .PHONY: generate_test_cert
 
 ###############################################################################
@@ -224,7 +214,7 @@ DESTINATION = ./index.html.md
 build-docs:
 	@cd docs && \
 	while read -r branch path_prefix; do \
-		(git checkout $${branch} && npm ci && VUEPRESS_BASE="/$${path_prefix}/" npm run build) ; \
+		(git checkout $${branch} && npm install && VUEPRESS_BASE="/$${path_prefix}/" npm run build) ; \
 		mkdir -p ~/output/$${path_prefix} ; \
 		cp -r .vuepress/dist/* ~/output/$${path_prefix}/ ; \
 		cp ~/output/$${path_prefix}/index.html ~/output ; \
@@ -237,13 +227,13 @@ build-docs:
 
 build-docker: build-linux
 	cp $(BUILDDIR)/tendermint DOCKER/tendermint
-	docker build --label=tendermint --tag="tendermint/tendermint" -f DOCKER/Dockerfile .
+	docker build --label=tendermint --tag="tendermint/tendermint" DOCKER
 	rm -rf DOCKER/tendermint
 .PHONY: build-docker
 
 
 ###############################################################################
-###                                Mocks                                    ###
+###                       Mocks 											###
 ###############################################################################
 
 mockery:
@@ -313,26 +303,3 @@ build-reproducible:
 		--name latest-build cosmossdk/rbuilder:latest
 	docker cp -a latest-build:/home/builder/artifacts/ $(CURDIR)/
 .PHONY: build-reproducible
-
-# Implements test splitting and running. This is pulled directly from
-# the github action workflows for better local reproducibility.
-
-GO_TEST_FILES != find $(CURDIR) -name "*_test.go"
-
-# default to four splits by default
-NUM_SPLIT ?= 4
-
-$(BUILDDIR):
-	mkdir -p $@
-
-# The format statement filters out all packages that don't have tests.
-# Note we need to check for both in-package tests (.TestGoFiles) and
-# out-of-package tests (.XTestGoFiles).
-$(BUILDDIR)/packages.txt:$(GO_TEST_FILES) $(BUILDDIR)
-	go list -f "{{ if (or .TestGoFiles .XTestGoFiles) }}{{ .ImportPath }}{{ end }}" ./... | sort > $@
-
-split-test-packages:$(BUILDDIR)/packages.txt
-	split -d -n l/$(NUM_SPLIT) $< $<.
-test-group-%:split-test-packages
-	cat $(BUILDDIR)/packages.txt.$* | xargs go test -mod=readonly -timeout=5m -race -coverprofile=$(BUILDDIR)/$*.profile.out
-

README.md

@@ -3,13 +3,13 @@
 ![banner](docs/tendermint-core-image.jpg)
 
 [Byzantine-Fault Tolerant](https://en.wikipedia.org/wiki/Byzantine_fault_tolerance)
-[State Machine Replication](https://en.wikipedia.org/wiki/State_machine_replication).
+[State Machines](https://en.wikipedia.org/wiki/State_machine_replication).
 Or [Blockchain](<https://en.wikipedia.org/wiki/Blockchain_(database)>), for short.
 
 [![version](https://img.shields.io/github/tag/tendermint/tendermint.svg)](https://github.com/tendermint/tendermint/releases/latest)
 [![API Reference](https://camo.githubusercontent.com/915b7be44ada53c290eb157634330494ebe3e30a/68747470733a2f2f676f646f632e6f72672f6769746875622e636f6d2f676f6c616e672f6764646f3f7374617475732e737667)](https://pkg.go.dev/github.com/tendermint/tendermint)
 [![Go version](https://img.shields.io/badge/go-1.16-blue.svg)](https://github.com/moovweb/gvm)
-[![Discord chat](https://img.shields.io/discord/669268347736686612.svg)](https://discord.gg/cosmosnetwork)
+[![Discord chat](https://img.shields.io/discord/669268347736686612.svg)](https://discord.gg/vcExX9T)
 [![license](https://img.shields.io/github/license/tendermint/tendermint.svg)](https://github.com/tendermint/tendermint/blob/master/LICENSE)
 [![tendermint/tendermint](https://tokei.rs/b1/github/tendermint/tendermint?category=lines)](https://github.com/tendermint/tendermint)
 [![Sourcegraph](https://sourcegraph.com/github.com/tendermint/tendermint/-/badge.svg)](https://sourcegraph.com/github.com/tendermint/tendermint?badge)
@@ -20,31 +20,25 @@ Or [Blockchain](<https://en.wikipedia.org/wiki/Blockchain_(database)>), for shor
 
 Tendermint Core is a Byzantine Fault Tolerant (BFT) middleware that takes a state transition machine - written in any programming language - and securely replicates it on many machines.
 
-For protocol details, refer to the [Tendermint Specification](./spec/README.md).
+For protocol details, see [the specification](https://github.com/tendermint/spec).
 
 For detailed analysis of the consensus protocol, including safety and liveness proofs,
-read our paper, "[The latest gossip on BFT consensus](https://arxiv.org/abs/1807.04938)".
-
-## Documentation
-
-Complete documentation can be found on the [website](https://docs.tendermint.com/).
+see our recent paper, "[The latest gossip on BFT consensus](https://arxiv.org/abs/1807.04938)".
 
 ## Releases
 
 Please do not depend on master as your production branch. Use [releases](https://github.com/tendermint/tendermint/releases) instead.
 
-Tendermint has been in the production of private and public environments, most notably the blockchains of the Cosmos Network. we haven't released v1.0 yet since we are making breaking changes to the protocol and the APIs.
+Tendermint has been in the production of private and public environments, most notably the blockchains of the Cosmos Network. we haven't released v1.0 yet since we are making breaking changes to the protocol and the APIs. 
 See below for more details about [versioning](#versioning).
 
 In any case, if you intend to run Tendermint in production, we're happy to help. You can
-contact us [over email](mailto:hello@interchain.io) or [join the chat](https://discord.gg/cosmosnetwork).
-
-More on how releases are conducted can be found [here](./RELEASES.md).
+contact us [over email](mailto:hello@interchain.berlin) or [join the chat](https://discord.gg/vcExX9T).
 
 ## Security
 
 To report a security vulnerability, see our [bug bounty
-program](https://hackerone.com/cosmos).
+program](https://hackerone.com/tendermint). 
 For examples of the kinds of bugs we're looking for, see [our security policy](SECURITY.md).
 
 We also maintain a dedicated mailing list for security updates. We will only ever use this mailing list
@@ -54,17 +48,22 @@ to notify you of vulnerabilities and fixes in Tendermint Core. You can subscribe
 
 | Requirement | Notes            |
 |-------------|------------------|
-| Go version  | Go1.17 or higher |
+| Go version  | Go1.16 or higher |
+
+## Documentation
+
+Complete documentation can be found on the [website](https://docs.tendermint.com/master/).
 
 ### Install
 
-See the [install instructions](./docs/introduction/install.md).
+See the [install instructions](/docs/introduction/install.md).
 
 ### Quick Start
 
-- [Single node](./docs/introduction/quick-start.md)
-- [Local cluster using docker-compose](./docs/tools/docker-compose.md)
-- [Remote cluster using Terraform and Ansible](./docs/tools/terraform-and-ansible.md)
+- [Single node](/docs/introduction/quick-start.md)
+- [Local cluster using docker-compose](/docs/networks/docker-compose.md)
+- [Remote cluster using Terraform and Ansible](/docs/networks/terraform-and-ansible.md)
+- [Join the Cosmos testnet](https://cosmos.network/testnet)
 
 ## Contributing
 
@@ -72,9 +71,9 @@ Please abide by the [Code of Conduct](CODE_OF_CONDUCT.md) in all interactions.
 
 Before contributing to the project, please take a look at the [contributing guidelines](CONTRIBUTING.md)
 and the [style guide](STYLE_GUIDE.md). You may also find it helpful to read the
-[specifications](./spec/README.md),
+[specifications](https://github.com/tendermint/spec), watch the [Developer Sessions](/docs/DEV_SESSIONS.md), 
 and familiarize yourself with our
-[Architectural Decision Records (ADRs)](./docs/architecture/README.md) and [Request For Comments (RFCs)](./docs/rfc/README.md).
+[Architectural Decision Records](https://github.com/tendermint/tendermint/tree/master/docs/architecture).
 
 ## Versioning
 
@@ -96,7 +95,7 @@ In an effort to avoid accumulating technical debt prior to 1.0.0,
 we do not guarantee that breaking changes (ie. bumps in the MINOR version)
 will work with existing Tendermint blockchains. In these cases you will
 have to start a new blockchain, or write something custom to get the old
-data into the new chain. However, any bump in the PATCH version should be
+data into the new chain. However, any bump in the PATCH version should be 
 compatible with existing blockchain histories.
 
 
@@ -111,22 +110,24 @@ in [UPGRADING.md](./UPGRADING.md).
 
 ## Resources
 
-### Roadmap
+### Tendermint Core
 
-We keep a public up-to-date version of our roadmap [here](./docs/roadmap/roadmap.md)
+For details about the blockchain data structures and the p2p protocols, see the
+[Tendermint specification](https://docs.tendermint.com/master/spec/).
 
-### Libraries
+For details on using the software, see the [documentation](/docs/) which is also
+hosted at: <https://docs.tendermint.com/master/>
 
-- [Cosmos SDK](http://github.com/cosmos/cosmos-sdk); A framework for building applications in Golang
-- [Tendermint in Rust](https://github.com/informalsystems/tendermint-rs)
-- [ABCI Tower](https://github.com/penumbra-zone/tower-abci)
+### Tools
+
+Benchmarking is provided by [`tm-load-test`](https://github.com/informalsystems/tm-load-test).
+Additional tooling can be found in [/docs/tools](/docs/tools).
 
 ### Applications
 
-- [Cosmos Hub](https://hub.cosmos.network/)
-- [Terra](https://www.terra.money/)
-- [Celestia](https://celestia.org/)
-- [Anoma](https://anoma.network/)
+- [Cosmos SDK](http://github.com/cosmos/cosmos-sdk); a cryptocurrency application framework
+- [Ethermint](http://github.com/cosmos/ethermint); Ethereum on Tendermint
+- [Many more](https://tendermint.com/ecosystem)
 
 ### Research
 
@@ -139,7 +140,7 @@ We keep a public up-to-date version of our roadmap [here](./docs/roadmap/roadmap
 ## Join us!
 
 Tendermint Core is maintained by [Interchain GmbH](https://interchain.berlin).
-If you'd like to work full-time on Tendermint Core, [we're hiring](https://interchain-gmbh.breezy.hr/)!
+If you'd like to work full-time on Tendermint Core, [we're hiring](https://interchain-gmbh.breezy.hr/p/682fb7e8a6f601-software-engineer-tendermint-core)!
 
 Funding for Tendermint Core development comes primarily from the [Interchain Foundation](https://interchain.io),
 a Swiss non-profit. The Tendermint trademark is owned by [Tendermint Inc.](https://tendermint.com), the for-profit entity

RELEASES.md

@@ -1,207 +0,0 @@
-# Releases
-
-Tendermint uses [semantic versioning](https://semver.org/) with each release following
-a `vX.Y.Z` format. The `master` branch is used for active development and thus it's
-advisable not to build against it.
-
-The latest changes are always initially merged into `master`.
-Releases are specified using tags and are built from long-lived "backport" branches
-that are cut from `master` when the release process begins.
-Each release "line" (e.g. 0.34 or 0.33) has its own long-lived backport branch,
-and the backport branches have names like `v0.34.x` or `v0.33.x`
-(literally, `x`; it is not a placeholder in this case). Tendermint only
-maintains the last two releases at a time (the oldest release is predominantly
-just security patches).
-
-## Backporting
-
-As non-breaking changes land on `master`, they should also be backported
-to these backport branches.
-
-We use Mergify's [backport feature](https://mergify.io/features/backports) to automatically backport
-to the needed branch. There should be a label for any backport branch that you'll be targeting.
-To notify the bot to backport a pull request, mark the pull request with the label corresponding
-to the correct backport branch. For example, to backport to v0.35.x, add the label `S:backport-to-v0.35.x`.
-Once the original pull request is merged, the bot will try to cherry-pick the pull request
-to the backport branch. If the bot fails to backport, it will open a pull request.
-The author of the original pull request is responsible for solving the conflicts and
-merging the pull request.
-
-### Creating a backport branch
-
-If this is the first release candidate for a major release, you get to have the
-honor of creating the backport branch!
-
-Note that, after creating the backport branch, you'll also need to update the
-tags on `master` so that `go mod` is able to order the branches correctly. You
-should tag `master` with a "dev" tag that is "greater than" the backport
-branches tags. See [#6072](https://github.com/tendermint/tendermint/pull/6072)
-for more context.
-
-In the following example, we'll assume that we're making a backport branch for
-the 0.35.x line.
-
-1. Start on `master`
-
-2. Create and push the backport branch:
-   ```sh
-   git checkout -b v0.35.x
-   git push origin v0.35.x
-   ```
-
-3. Create a PR to update the documentation directory for the backport branch.
-
-   We only maintain RFC and ADR documents on master, to avoid confusion.
-   In addition, we rewrite Markdown URLs pointing to master to point to the
-   backport branch, so that generated documentation will link to the correct
-   versions of files elsewhere in the repository. For context on the latter,
-   see https://github.com/tendermint/tendermint/issues/7675.
-
-   To prepare the PR:
-   ```sh
-   # Remove the RFC and ADR documents from the backport.
-   # We only maintain these on master to avoid confusion.
-   git rm -r docs/rfc docs/architecture
-
-   # Update absolute links to point to the backport.
-   go run ./scripts/linkpatch -recur -target v0.35.x -skip-path docs/DOCS_README.md,docs/README.md docs
-
-   # Create and push the PR.
-   git checkout -b update-docs-v035x
-   git commit -m "Update docs for v0.35.x backport branch." docs
-   git push -u origin update-docs-v035x
-   ```
-
-   Be sure to merge this PR before making other changes on the newly-created
-   backport branch.
-
-After doing these steps, go back to `master` and do the following:
-
-1. Tag `master` as the dev branch for the _next_ major release and push it up to GitHub.
-   For example:
-   ```sh
-   git tag -a v0.36.0-dev -m "Development base for Tendermint v0.36."
-   git push origin v0.36.0-dev
-   ```
-
-2. Create a new workflow to run e2e nightlies for the new backport branch.
-   (See [e2e-nightly-master.yml][e2e] for an example.)
-
-3. Add a new section to the Mergify config (`.github/mergify.yml`) to enable the
-   backport bot to work on this branch, and add a corresponding `S:backport-to-v0.35.x`
-   [label](https://github.com/tendermint/tendermint/labels) so the bot can be triggered.
-
-4. Add a new section to the Dependabot config (`.github/dependabot.yml`) to
-   enable automatic update of Go dependencies on this branch. Copy and edit one
-   of the existing branch configurations to set the correct `target-branch`.
-
-[e2e]: https://github.com/tendermint/tendermint/blob/master/.github/workflows/e2e-nightly-master.yml
-
-## Release candidates
-
-Before creating an official release, especially a major release, we may want to create a
-release candidate (RC) for our friends and partners to test out. We use git tags to
-create RCs, and we build them off of backport branches.
-
-Tags for RCs should follow the "standard" release naming conventions, with `-rcX` at the end
-(for example, `v0.35.0-rc0`).
-
-(Note that branches and tags _cannot_ have the same names, so it's important that these branches
-have distinct names from the tags/release names.)
-
-If this is the first RC for a major release, you'll have to make a new backport branch (see above).
-Otherwise:
-
-1. Start from the backport branch (e.g. `v0.35.x`).
-2. Run the integration tests and the e2e nightlies
-   (which can be triggered from the Github UI;
-   e.g., https://github.com/tendermint/tendermint/actions/workflows/e2e-nightly-34x.yml).
-3. Prepare the changelog:
-   - Move the changes included in `CHANGELOG_PENDING.md` into `CHANGELOG.md`. Each RC should have
-     it's own changelog section. These will be squashed when the final candidate is released.
-   - Run `python ./scripts/linkify_changelog.py CHANGELOG.md` to add links for
-     all PRs
-   - Ensure that `UPGRADING.md` is up-to-date and includes notes on any breaking changes
-      or other upgrading flows.
-   - Bump TMVersionDefault version in  `version.go`
-   - Bump P2P and block protocol versions in  `version.go`, if necessary.
-     Check the changelog for breaking changes in these components.
-   - Bump ABCI protocol version in `version.go`, if necessary
-4. Open a PR with these changes against the backport branch.
-5. Once these changes have landed on the backport branch, be sure to pull them back down locally.
-6. Once you have the changes locally, create the new tag, specifying a name and a tag "message":
-   `git tag -a v0.35.0-rc0 -m "Release Candidate v0.35.0-rc0`
-7. Push the tag back up to origin:
-   `git push origin v0.35.0-rc0`
-   Now the tag should be available on the repo's releases page.
-8. Future RCs will continue to be built off of this branch.
-
-Note that this process should only be used for "true" RCs--
-release candidates that, if successful, will be the next release.
-For more experimental "RCs," create a new, short-lived branch and tag that instead.
-
-## Major release
-
-This major release process assumes that this release was preceded by release candidates.
-If there were no release candidates, begin by creating a backport branch, as described above.
-
-1. Start on the backport branch (e.g. `v0.35.x`)
-2. Run integration tests (`make test_integrations`) and the e2e nightlies.
-3. Prepare the release:
-   - "Squash" changes from the changelog entries for the RCs into a single entry,
-      and add all changes included in `CHANGELOG_PENDING.md`.
-      (Squashing includes both combining all entries, as well as removing or simplifying
-      any intra-RC changes. It may also help to alphabetize the entries by package name.)
-   - Run `python ./scripts/linkify_changelog.py CHANGELOG.md` to add links for
-     all PRs
-   - Ensure that `UPGRADING.md` is up-to-date and includes notes on any breaking changes
-      or other upgrading flows.
-   - Bump TMVersionDefault version in  `version.go`
-   - Bump P2P and block protocol versions in  `version.go`, if necessary
-   - Bump ABCI protocol version in `version.go`, if necessary
-4. Open a PR with these changes against the backport branch.
-5. Once these changes are on the backport branch, push a tag with prepared release details.
-   This will trigger the actual release `v0.35.0`.
-   - `git tag -a v0.35.0 -m 'Release v0.35.0'`
-   - `git push origin v0.35.0`
-6. Make sure that `master` is updated with the latest `CHANGELOG.md`, `CHANGELOG_PENDING.md`, and `UPGRADING.md`.
-7. Add the release to the documentation site generator config (see
-   [DOCS_README.md](./docs/DOCS_README.md) for more details). In summary:
-   - Start on branch `master`.
-   - Add a new line at the bottom of [`docs/versions`](./docs/versions) to
-     ensure the newest release is the default for the landing page.
-   - Add a new entry to `themeConfig.versions` in
-     [`docs/.vuepress/config.js`](./docs/.vuepress/config.js) to include the
-	 release in the dropdown versions menu.
-   - Commit these changes to `master` and backport them into the backport
-     branch for this release.
-
-## Minor release (point releases)
-
-Minor releases are done differently from major releases: They are built off of
-long-lived backport branches, rather than from master.  As non-breaking changes
-land on `master`, they should also be backported into these backport branches.
-
-Minor releases don't have release candidates by default, although any tricky
-changes may merit a release candidate.
-
-To create a minor release:
-
-1. Checkout the long-lived backport branch: `git checkout v0.35.x`
-2. Run integration tests (`make test_integrations`) and the nightlies.
-3. Check out a new branch and prepare the release:
-   - Copy `CHANGELOG_PENDING.md` to top of `CHANGELOG.md`
-   - Run `python ./scripts/linkify_changelog.py CHANGELOG.md` to add links for all issues
-   - Run `bash ./scripts/authors.sh` to get a list of authors since the latest release, and add the GitHub aliases of external contributors to the top of the CHANGELOG. To lookup an alias from an email, try `bash ./scripts/authors.sh <email>`
-   - Reset the `CHANGELOG_PENDING.md`
-   - Bump the TMDefaultVersion in `version.go`
-   - Bump the ABCI version number, if necessary.
-     (Note that ABCI follows semver, and that ABCI versions are the only versions
-     which can change during minor releases, and only field additions are valid minor changes.)
-4. Open a PR with these changes that will land them back on `v0.35.x`
-5. Once this change has landed on the backport branch, make sure to pull it locally, then push a tag.
-   - `git tag -a v0.35.1 -m 'Release v0.35.1'`
-   - `git push origin v0.35.1`
-6. Create a pull request back to master with the CHANGELOG & version changes from the latest release.
-   - Remove all `R:minor` labels from the pull requests that were included in the release.
-   - Do not merge the backport branch into master.

SECURITY.md

@@ -4,7 +4,7 @@
 
 As part of our [Coordinated Vulnerability Disclosure
 Policy](https://tendermint.com/security), we operate a [bug
-bounty](https://hackerone.com/cosmos).
+bounty](https://hackerone.com/tendermint).
 See the policy for more details on submissions and rewards, and see "Example Vulnerabilities" (below) for examples of the kinds of bugs we're most interested in.
 
 ### Guidelines
@@ -86,7 +86,7 @@ If you are running older versions of Tendermint Core, we encourage you to upgrad
 
 ## Scope
 
-The full scope of our bug bounty program is outlined on our [Hacker One program page](https://hackerone.com/cosmos). Please also note that, in the interest of the safety of our users and staff, a few things are explicitly excluded from scope:
+The full scope of our bug bounty program is outlined on our [Hacker One program page](https://hackerone.com/tendermint). Please also note that, in the interest of the safety of our users and staff, a few things are explicitly excluded from scope:
 
 * Any third-party services
 * Findings from physical testing, such as office access

UPGRADING.md

@@ -2,67 +2,6 @@
 
 This guide provides instructions for upgrading to specific versions of Tendermint Core.
 
-## v0.36
-
-### ABCI Changes
-
-#### ABCI++
-
-Coming soon...
-
-#### ABCI Mutex
-
-In previous versions of ABCI, Tendermint was prevented from making
-concurrent calls to ABCI implementations by virtue of mutexes in the
-implementation of Tendermint's ABCI infrastructure. These mutexes have
-been removed from the current implementation and applications will now
-be responsible for managing their own concurrency control.
-
-To replicate the prior semantics, ensure that ABCI applications have a
-single mutex that protects all ABCI method calls from concurrent
-access. You can relax these requirements if your application can
-provide safe concurrent access via other means. This safety is an
-application concern so be very sure to test the application thoroughly
-using realistic workloads and the race detector to ensure your
-applications remains correct.
-
-### RPC Changes
-
-Tendermint v0.36 adds a new RPC event subscription API. The existing event
-subscription API based on websockets is now deprecated. It will continue to
-work throughout the v0.36 release, but the `subscribe`, `unsubscribe`, and
-`unsubscribe_all` methods, along with websocket support, will be removed in
-Tendermint v0.37.  Callers currently using these features should migrate as
-soon as is practical to the new API.
-
-To enable the new API, node operators set a new `event-log-window-size`
-parameter in the `[rpc]` section of the `config.toml` file. This defines a
-duration of time during which the node will log all events published to the
-event bus for use by RPC consumers.
-
-Consumers use the new `events` JSON-RPC method to poll for events matching
-their query in the log. Unlike the streaming API, events are not discarded if
-the caller is slow, loses its connection, or crashes. As long as the client
-recovers before its events expire from the log window, it will be able to
-replay and catch up after recovering. Also unlike the streaming API, the client
-can tell if it has truly missed events because they have expired from the log.
-
-The `events` method is a normal JSON-RPC method, and does not require any
-non-standard response processing (in contrast with the old `subscribe`).
-Clients can modify their query at any time, and no longer need to coordinate
-subscribe and unsubscribe calls to handle multiple queries.
-
-The Go client implementations in the Tendermint Core repository have all been
-updated to add a new `Events` method, including the light client proxy.
-
-A new `rpc/client/eventstream` package has also been added to make it easier
-for users to update existing use of the streaming API to use the polling API
-The `eventstream` package handles polling and delivers matching events to a
-callback.
-
-For more detailed information, see [ADR 075](https://tinyurl.com/adr075) which
-defines and describes the new API in detail.
-
 ## v0.35
 
 ### ABCI Changes
@@ -159,7 +98,7 @@ are:
 - `blockchain`
 - `evidence`
 
-Accordingly, the `node` package changed to reduce access to
+Accordingly, the `node` package was changed to reduce access to
 tendermint internals: applications that use tendermint as a library
 will need to change to accommodate these changes. Most notably:
 
@@ -170,20 +109,6 @@ will need to change to accommodate these changes. Most notably:
   longer exported and have been replaced with `node.New` and
   `node.NewDefault` which provide more functional interfaces.
 
-To access any of the functionality previously available via the
-`node.Node` type, use the `*local.Local` "RPC" client, that exposes
-the full RPC interface provided as direct function calls. Import the
-`github.com/tendermint/tendermint/rpc/client/local` package and pass
-the node service as in the following:
-
-```go
-    node := node.NewDefault() //construct the node object
-    // start and set up the node service
-
-    client := local.New(node.(local.NodeService))
-    // use client object to interact with the node
-```
-
 ### gRPC Support
 
 Mark gRPC in the RPC layer as deprecated and to be removed in 0.36.
@@ -205,10 +130,10 @@ both stacks.
 The P2P library was reimplemented in this release. The new implementation is
 enabled by default in this version of Tendermint. The legacy implementation is still
 included in this version of Tendermint as a backstop to work around unforeseen
-production issues. The new and legacy version are interoperable. If necessary,
+production issues. The new and legacy version are interoperable. If necessary, 
 you can enable the legacy implementation in the server configuration file.
 
-To make use of the legacy P2P implemementation add or update the following field of
+To make use of the legacy P2P implemementation add or update the following field of 
 your server's configuration file under the `[p2p]` section:
 
 ```toml
@@ -233,8 +158,8 @@ in the order in which they were received.
 
 * `priority`: A priority queue of messages.
 
-* `wdrr`: A queue implementing the Weighted Deficit Round Robin algorithm. A
-weighted deficit round robin queue is created per peer. Each queue contains a
+* `wdrr`: A queue implementing the Weighted Deficit Round Robin algorithm. A 
+weighted deficit round robin queue is created per peer. Each queue contains a 
 separate 'flow' for each of the channels of communication that exist between any two
 peers. Tendermint maintains a channel per message type between peers. Each WDRR
 queue maintains a shared buffered with a fixed capacity through which messages on different
@@ -278,7 +203,7 @@ Note also that Tendermint 0.34 also requires Go 1.16 or higher.
   were added to support the new State Sync feature.
   Previously, syncing a new node to a preexisting network could take days; but with State Sync,
   new nodes are able to join a network in a matter of seconds.
-  Read [the spec](https://github.com/tendermint/tendermint/blob/master/spec/abci/apps.md)
+  Read [the spec](https://docs.tendermint.com/master/spec/abci/apps.html#state-sync)
   if you want to learn more about State Sync, or if you'd like your application to use it.
   (If you don't want to support State Sync in your application, you can just implement these new
   ABCI methods as no-ops, leaving them empty.)
@@ -403,6 +328,7 @@ The `bech32` package has moved to the Cosmos SDK:
 ### CLI
 
 The `tendermint lite` command has been renamed to `tendermint light` and has a slightly different API.
+See [the docs](https://docs.tendermint.com/master/tendermint-core/light-client-protocol.html#http-proxy) for details.
 
 ### Light Client
 
@@ -677,7 +603,7 @@ the compilation tag:
 
 Use `cleveldb` tag instead of `gcc` to compile Tendermint with CLevelDB or
 use `make build_c` / `make install_c` (full instructions can be found at
-<https://docs.tendermint.com/v0.35/introduction/install.html)
+<https://tendermint.com/docs/introduction/install.html#compile-with-cleveldb-support>)
 
 ## v0.31.0
 

abci/README.md

@@ -19,7 +19,7 @@ To get up and running quickly, see the [getting started guide](../docs/app-dev/g
 
 A detailed description of the ABCI methods and message types is contained in:
 
-- [The main spec](../spec/abci/abci.md)
+- [The main spec](https://github.com/tendermint/spec/blob/master/spec/abci/abci.md)
 - [A protobuf file](../proto/tendermint/abci/types.proto)
 - [A Go interface](./types/application.go)
 

abci/client/client.go

@@ -1,4 +1,4 @@
-package abciclient
+package abcicli
 
 import (
 	"context"
@@ -6,7 +6,7 @@ import (
 	"sync"
 
 	"github.com/tendermint/tendermint/abci/types"
-	"github.com/tendermint/tendermint/libs/log"
+	tmsync "github.com/tendermint/tendermint/internal/libs/sync"
 	"github.com/tendermint/tendermint/libs/service"
 )
 
@@ -19,8 +19,8 @@ const (
 
 // Client defines an interface for an ABCI client.
 //
-// All methods return the appropriate protobuf ResponseXxx struct and
-// an error.
+// All `Async` methods return a `ReqRes` object and an error.
+// All `Sync` methods return the appropriate protobuf ResponseXxx struct and an error.
 //
 // NOTE these are client errors, eg. ABCI socket connectivity issues.
 // Application-related errors are reflected in response via ABCI error codes
@@ -28,61 +28,129 @@ const (
 type Client interface {
 	service.Service
 
+	SetResponseCallback(Callback)
 	Error() error
 
-	Flush(context.Context) error
-	Echo(ctx context.Context, msg string) (*types.ResponseEcho, error)
-	Info(context.Context, types.RequestInfo) (*types.ResponseInfo, error)
-	CheckTx(context.Context, types.RequestCheckTx) (*types.ResponseCheckTx, error)
-	Query(context.Context, types.RequestQuery) (*types.ResponseQuery, error)
-	Commit(context.Context) (*types.ResponseCommit, error)
-	InitChain(context.Context, types.RequestInitChain) (*types.ResponseInitChain, error)
-	PrepareProposal(context.Context, types.RequestPrepareProposal) (*types.ResponsePrepareProposal, error)
-	ProcessProposal(context.Context, types.RequestProcessProposal) (*types.ResponseProcessProposal, error)
-	ExtendVote(context.Context, types.RequestExtendVote) (*types.ResponseExtendVote, error)
-	VerifyVoteExtension(context.Context, types.RequestVerifyVoteExtension) (*types.ResponseVerifyVoteExtension, error)
-	FinalizeBlock(context.Context, types.RequestFinalizeBlock) (*types.ResponseFinalizeBlock, error)
-	ListSnapshots(context.Context, types.RequestListSnapshots) (*types.ResponseListSnapshots, error)
-	OfferSnapshot(context.Context, types.RequestOfferSnapshot) (*types.ResponseOfferSnapshot, error)
-	LoadSnapshotChunk(context.Context, types.RequestLoadSnapshotChunk) (*types.ResponseLoadSnapshotChunk, error)
-	ApplySnapshotChunk(context.Context, types.RequestApplySnapshotChunk) (*types.ResponseApplySnapshotChunk, error)
+	// Asynchronous requests
+	FlushAsync(context.Context) (*ReqRes, error)
+	EchoAsync(ctx context.Context, msg string) (*ReqRes, error)
+	InfoAsync(context.Context, types.RequestInfo) (*ReqRes, error)
+	DeliverTxAsync(context.Context, types.RequestDeliverTx) (*ReqRes, error)
+	CheckTxAsync(context.Context, types.RequestCheckTx) (*ReqRes, error)
+	QueryAsync(context.Context, types.RequestQuery) (*ReqRes, error)
+	CommitAsync(context.Context) (*ReqRes, error)
+	InitChainAsync(context.Context, types.RequestInitChain) (*ReqRes, error)
+	BeginBlockAsync(context.Context, types.RequestBeginBlock) (*ReqRes, error)
+	EndBlockAsync(context.Context, types.RequestEndBlock) (*ReqRes, error)
+	ListSnapshotsAsync(context.Context, types.RequestListSnapshots) (*ReqRes, error)
+	OfferSnapshotAsync(context.Context, types.RequestOfferSnapshot) (*ReqRes, error)
+	LoadSnapshotChunkAsync(context.Context, types.RequestLoadSnapshotChunk) (*ReqRes, error)
+	ApplySnapshotChunkAsync(context.Context, types.RequestApplySnapshotChunk) (*ReqRes, error)
+
+	// Synchronous requests
+	FlushSync(context.Context) error
+	EchoSync(ctx context.Context, msg string) (*types.ResponseEcho, error)
+	InfoSync(context.Context, types.RequestInfo) (*types.ResponseInfo, error)
+	DeliverTxSync(context.Context, types.RequestDeliverTx) (*types.ResponseDeliverTx, error)
+	CheckTxSync(context.Context, types.RequestCheckTx) (*types.ResponseCheckTx, error)
+	QuerySync(context.Context, types.RequestQuery) (*types.ResponseQuery, error)
+	CommitSync(context.Context) (*types.ResponseCommit, error)
+	InitChainSync(context.Context, types.RequestInitChain) (*types.ResponseInitChain, error)
+	BeginBlockSync(context.Context, types.RequestBeginBlock) (*types.ResponseBeginBlock, error)
+	EndBlockSync(context.Context, types.RequestEndBlock) (*types.ResponseEndBlock, error)
+	ListSnapshotsSync(context.Context, types.RequestListSnapshots) (*types.ResponseListSnapshots, error)
+	OfferSnapshotSync(context.Context, types.RequestOfferSnapshot) (*types.ResponseOfferSnapshot, error)
+	LoadSnapshotChunkSync(context.Context, types.RequestLoadSnapshotChunk) (*types.ResponseLoadSnapshotChunk, error)
+	ApplySnapshotChunkSync(context.Context, types.RequestApplySnapshotChunk) (*types.ResponseApplySnapshotChunk, error)
 }
 
 //----------------------------------------
 
 // NewClient returns a new ABCI client of the specified transport type.
 // It returns an error if the transport is not "socket" or "grpc"
-func NewClient(logger log.Logger, addr, transport string, mustConnect bool) (Client, error) {
+func NewClient(addr, transport string, mustConnect bool) (client Client, err error) {
 	switch transport {
 	case "socket":
-		return NewSocketClient(logger, addr, mustConnect), nil
+		client = NewSocketClient(addr, mustConnect)
 	case "grpc":
-		return NewGRPCClient(logger, addr, mustConnect), nil
+		client = NewGRPCClient(addr, mustConnect)
 	default:
-		return nil, fmt.Errorf("unknown abci transport %s", transport)
+		err = fmt.Errorf("unknown abci transport %s", transport)
 	}
+	return
 }
 
-type requestAndResponse struct {
+type Callback func(*types.Request, *types.Response)
+
+type ReqRes struct {
 	*types.Request
-	*types.Response
+	*sync.WaitGroup
+	*types.Response // Not set atomically, so be sure to use WaitGroup.
 
-	mtx    sync.Mutex
-	signal chan struct{}
+	mtx  tmsync.RWMutex
+	done bool                  // Gets set to true once *after* WaitGroup.Done().
+	cb   func(*types.Response) // A single callback that may be set.
 }
 
-func makeReqRes(req *types.Request) *requestAndResponse {
-	return &requestAndResponse{
-		Request:  req,
-		Response: nil,
-		signal:   make(chan struct{}),
+func NewReqRes(req *types.Request) *ReqRes {
+	return &ReqRes{
+		Request:   req,
+		WaitGroup: waitGroup1(),
+		Response:  nil,
+
+		done: false,
+		cb:   nil,
 	}
 }
 
-// markDone marks the ReqRes object as done.
-func (r *requestAndResponse) markDone() {
+// Sets sets the callback. If reqRes is already done, it will call the cb
+// immediately. Note, reqRes.cb should not change if reqRes.done and only one
+// callback is supported.
+func (r *ReqRes) SetCallback(cb func(res *types.Response)) {
+	r.mtx.Lock()
+
+	if r.done {
+		r.mtx.Unlock()
+		cb(r.Response)
+		return
+	}
+
+	r.cb = cb
+	r.mtx.Unlock()
+}
+
+// InvokeCallback invokes a thread-safe execution of the configured callback
+// if non-nil.
+func (r *ReqRes) InvokeCallback() {
 	r.mtx.Lock()
 	defer r.mtx.Unlock()
 
-	close(r.signal)
+	if r.cb != nil {
+		r.cb(r.Response)
+	}
+}
+
+// GetCallback returns the configured callback of the ReqRes object which may be
+// nil. Note, it is not safe to concurrently call this in cases where it is
+// marked done and SetCallback is called before calling GetCallback as that
+// will invoke the callback twice and create a potential race condition.
+//
+// ref: https://github.com/tendermint/tendermint/issues/5439
+func (r *ReqRes) GetCallback() func(*types.Response) {
+	r.mtx.RLock()
+	defer r.mtx.RUnlock()
+	return r.cb
+}
+
+// SetDone marks the ReqRes object as done.
+func (r *ReqRes) SetDone() {
+	r.mtx.Lock()
+	defer r.mtx.Unlock()
+	r.done = true
+}
+
+func waitGroup1() (wg *sync.WaitGroup) {
+	wg = &sync.WaitGroup{}
+	wg.Add(1)
+	return
 }

abci/client/doc.go

@@ -1,4 +1,4 @@
-// Package abciclient provides an ABCI implementation in Go.
+// Package abcicli provides an ABCI implementation in Go.
 //
 // There are 3 clients available:
 //		1. socket (unix or TCP)
@@ -7,14 +7,23 @@
 //
 // ## Socket client
 //
-// The client blocks for enqueuing the request, for enqueuing the
-// Flush to send the request, and for the Flush response to return.
+// async: the client maintains an internal buffer of a fixed size. when the
+// buffer becomes full, all Async calls will return an error immediately.
+//
+// sync: the client blocks on 1) enqueuing the Sync request 2) enqueuing the
+// Flush requests 3) waiting for the Flush response
 //
 // ## Local client
 //
-// The global mutex is locked during each call
+// async: global mutex is locked during each call (meaning it's not really async!)
+// sync: global mutex is locked during each call
 //
 // ## gRPC client
 //
-// The client waits for all calls to complete.
-package abciclient
+// async: gRPC is synchronous, but an internal buffer of a fixed size is used
+// to store responses and later call callbacks (separate goroutine per
+// response).
+//
+// sync: waits for all Async calls to complete (essentially what Flush does in
+// the socket client) and calls Sync method.
+package abcicli

abci/client/grpc_client.go

@@ -1,18 +1,16 @@
-package abciclient
+package abcicli
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"net"
 	"sync"
 	"time"
 
 	"google.golang.org/grpc"
-	"google.golang.org/grpc/credentials/insecure"
 
 	"github.com/tendermint/tendermint/abci/types"
-	"github.com/tendermint/tendermint/libs/log"
+	tmsync "github.com/tendermint/tendermint/internal/libs/sync"
 	tmnet "github.com/tendermint/tendermint/libs/net"
 	"github.com/tendermint/tendermint/libs/service"
 )
@@ -20,16 +18,16 @@ import (
 // A gRPC client.
 type grpcClient struct {
 	service.BaseService
-	logger log.Logger
-
 	mustConnect bool
 
-	client types.ABCIApplicationClient
-	conn   *grpc.ClientConn
+	client   types.ABCIApplicationClient
+	conn     *grpc.ClientConn
+	chReqRes chan *ReqRes // dispatches "async" responses to callbacks *in order*, needed by mempool
 
-	mtx  sync.Mutex
-	addr string
-	err  error
+	mtx   tmsync.RWMutex
+	addr  string
+	err   error
+	resCb func(*types.Request, *types.Response) // listens to all callbacks
 }
 
 var _ Client = (*grpcClient)(nil)
@@ -37,13 +35,26 @@ var _ Client = (*grpcClient)(nil)
 // NewGRPCClient creates a gRPC client, which will connect to addr upon the
 // start. Note Client#Start returns an error if connection is unsuccessful and
 // mustConnect is true.
-func NewGRPCClient(logger log.Logger, addr string, mustConnect bool) Client {
+//
+// GRPC calls are synchronous, but some callbacks expect to be called
+// asynchronously (eg. the mempool expects to be able to lock to remove bad txs
+// from cache). To accommodate, we finish each call in its own go-routine,
+// which is expensive, but easy - if you want something better, use the socket
+// protocol! maybe one day, if people really want it, we use grpc streams, but
+// hopefully not :D
+func NewGRPCClient(addr string, mustConnect bool) Client {
 	cli := &grpcClient{
-		logger:      logger,
 		addr:        addr,
 		mustConnect: mustConnect,
+		// Buffering the channel is needed to make calls appear asynchronous,
+		// which is required when the caller makes multiple async calls before
+		// processing callbacks (e.g. due to holding locks). 64 means that a
+		// caller can make up to 64 async calls before a callback must be
+		// processed (otherwise it deadlocks). It also means that we can make 64
+		// gRPC calls while processing a slow callback at the channel head.
+		chReqRes: make(chan *ReqRes, 64),
 	}
-	cli.BaseService = *service.NewBaseService(logger, "grpcClient", cli)
+	cli.BaseService = *service.NewBaseService(nil, "grpcClient", cli)
 	return cli
 }
 
@@ -51,37 +62,60 @@ func dialerFunc(ctx context.Context, addr string) (net.Conn, error) {
 	return tmnet.Connect(addr)
 }
 
-func (cli *grpcClient) OnStart(ctx context.Context) error {
+func (cli *grpcClient) OnStart() error {
+	// This processes asynchronous request/response messages and dispatches
+	// them to callbacks.
+	go func() {
+		// Use a separate function to use defer for mutex unlocks (this handles panics)
+		callCb := func(reqres *ReqRes) {
+			cli.mtx.Lock()
+			defer cli.mtx.Unlock()
+
+			reqres.SetDone()
+			reqres.Done()
+
+			// Notify client listener if set
+			if cli.resCb != nil {
+				cli.resCb(reqres.Request, reqres.Response)
+			}
+
+			// Notify reqRes listener if set
+			if cb := reqres.GetCallback(); cb != nil {
+				cb(reqres.Response)
+			}
+		}
+		for reqres := range cli.chReqRes {
+			if reqres != nil {
+				callCb(reqres)
+			} else {
+				cli.Logger.Error("Received nil reqres")
+			}
+		}
+	}()
+
 RETRY_LOOP:
 	for {
-		conn, err := grpc.Dial(cli.addr,
-			grpc.WithTransportCredentials(insecure.NewCredentials()),
-			grpc.WithContextDialer(dialerFunc),
-		)
+		conn, err := grpc.Dial(cli.addr, grpc.WithInsecure(), grpc.WithContextDialer(dialerFunc))
 		if err != nil {
 			if cli.mustConnect {
 				return err
 			}
-			cli.logger.Error(fmt.Sprintf("abci.grpcClient failed to connect to %v.  Retrying...\n", cli.addr), "err", err)
+			cli.Logger.Error(fmt.Sprintf("abci.grpcClient failed to connect to %v.  Retrying...\n", cli.addr), "err", err)
 			time.Sleep(time.Second * dialRetryIntervalSeconds)
 			continue RETRY_LOOP
 		}
 
-		cli.logger.Info("Dialed server. Waiting for echo.", "addr", cli.addr)
+		cli.Logger.Info("Dialed server. Waiting for echo.", "addr", cli.addr)
 		client := types.NewABCIApplicationClient(conn)
 		cli.conn = conn
 
 	ENSURE_CONNECTED:
 		for {
-			_, err := client.Echo(ctx, &types.RequestEcho{Message: "hello"}, grpc.WaitForReady(true))
+			_, err := client.Echo(context.Background(), &types.RequestEcho{Message: "hello"}, grpc.WaitForReady(true))
 			if err == nil {
 				break ENSURE_CONNECTED
 			}
-			if errors.Is(err, context.Canceled) || errors.Is(err, context.DeadlineExceeded) {
-				return err
-			}
-
-			cli.logger.Error("Echo failed", "err", err)
+			cli.Logger.Error("Echo failed", "err", err)
 			time.Sleep(time.Second * echoRetryIntervalSeconds)
 		}
 
@@ -91,81 +125,382 @@ RETRY_LOOP:
 }
 
 func (cli *grpcClient) OnStop() {
-	cli.mtx.Lock()
-	defer cli.mtx.Unlock()
-
 	if cli.conn != nil {
-		cli.err = cli.conn.Close()
+		cli.conn.Close()
+	}
+	close(cli.chReqRes)
+}
+
+func (cli *grpcClient) StopForError(err error) {
+	if !cli.IsRunning() {
+		return
+	}
+
+	cli.mtx.Lock()
+	if cli.err == nil {
+		cli.err = err
+	}
+	cli.mtx.Unlock()
+
+	cli.Logger.Error(fmt.Sprintf("Stopping abci.grpcClient for error: %v", err.Error()))
+	if err := cli.Stop(); err != nil {
+		cli.Logger.Error("Error stopping abci.grpcClient", "err", err)
 	}
 }
 
 func (cli *grpcClient) Error() error {
+	cli.mtx.RLock()
+	defer cli.mtx.RUnlock()
+	return cli.err
+}
+
+// Set listener for all responses
+// NOTE: callback may get internally generated flush responses.
+func (cli *grpcClient) SetResponseCallback(resCb Callback) {
 	cli.mtx.Lock()
 	defer cli.mtx.Unlock()
-
-	return cli.err
+	cli.resCb = resCb
 }
 
 //----------------------------------------
 
-func (cli *grpcClient) Flush(ctx context.Context) error { return nil }
-
-func (cli *grpcClient) Echo(ctx context.Context, msg string) (*types.ResponseEcho, error) {
-	return cli.client.Echo(ctx, types.ToRequestEcho(msg).GetEcho(), grpc.WaitForReady(true))
+// NOTE: call is synchronous, use ctx to break early if needed
+func (cli *grpcClient) EchoAsync(ctx context.Context, msg string) (*ReqRes, error) {
+	req := types.ToRequestEcho(msg)
+	res, err := cli.client.Echo(ctx, req.GetEcho(), grpc.WaitForReady(true))
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_Echo{Echo: res}})
 }
 
-func (cli *grpcClient) Info(ctx context.Context, params types.RequestInfo) (*types.ResponseInfo, error) {
-	return cli.client.Info(ctx, types.ToRequestInfo(params).GetInfo(), grpc.WaitForReady(true))
+// NOTE: call is synchronous, use ctx to break early if needed
+func (cli *grpcClient) FlushAsync(ctx context.Context) (*ReqRes, error) {
+	req := types.ToRequestFlush()
+	res, err := cli.client.Flush(ctx, req.GetFlush(), grpc.WaitForReady(true))
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_Flush{Flush: res}})
 }
 
-func (cli *grpcClient) CheckTx(ctx context.Context, params types.RequestCheckTx) (*types.ResponseCheckTx, error) {
-	return cli.client.CheckTx(ctx, types.ToRequestCheckTx(params).GetCheckTx(), grpc.WaitForReady(true))
+// NOTE: call is synchronous, use ctx to break early if needed
+func (cli *grpcClient) InfoAsync(ctx context.Context, params types.RequestInfo) (*ReqRes, error) {
+	req := types.ToRequestInfo(params)
+	res, err := cli.client.Info(ctx, req.GetInfo(), grpc.WaitForReady(true))
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_Info{Info: res}})
 }
 
-func (cli *grpcClient) Query(ctx context.Context, params types.RequestQuery) (*types.ResponseQuery, error) {
-	return cli.client.Query(ctx, types.ToRequestQuery(params).GetQuery(), grpc.WaitForReady(true))
+// NOTE: call is synchronous, use ctx to break early if needed
+func (cli *grpcClient) DeliverTxAsync(ctx context.Context, params types.RequestDeliverTx) (*ReqRes, error) {
+	req := types.ToRequestDeliverTx(params)
+	res, err := cli.client.DeliverTx(ctx, req.GetDeliverTx(), grpc.WaitForReady(true))
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_DeliverTx{DeliverTx: res}})
 }
 
-func (cli *grpcClient) Commit(ctx context.Context) (*types.ResponseCommit, error) {
-	return cli.client.Commit(ctx, types.ToRequestCommit().GetCommit(), grpc.WaitForReady(true))
+// NOTE: call is synchronous, use ctx to break early if needed
+func (cli *grpcClient) CheckTxAsync(ctx context.Context, params types.RequestCheckTx) (*ReqRes, error) {
+	req := types.ToRequestCheckTx(params)
+	res, err := cli.client.CheckTx(ctx, req.GetCheckTx(), grpc.WaitForReady(true))
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_CheckTx{CheckTx: res}})
 }
 
-func (cli *grpcClient) InitChain(ctx context.Context, params types.RequestInitChain) (*types.ResponseInitChain, error) {
-	return cli.client.InitChain(ctx, types.ToRequestInitChain(params).GetInitChain(), grpc.WaitForReady(true))
+// NOTE: call is synchronous, use ctx to break early if needed
+func (cli *grpcClient) QueryAsync(ctx context.Context, params types.RequestQuery) (*ReqRes, error) {
+	req := types.ToRequestQuery(params)
+	res, err := cli.client.Query(ctx, req.GetQuery(), grpc.WaitForReady(true))
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_Query{Query: res}})
 }
 
-func (cli *grpcClient) ListSnapshots(ctx context.Context, params types.RequestListSnapshots) (*types.ResponseListSnapshots, error) {
-	return cli.client.ListSnapshots(ctx, types.ToRequestListSnapshots(params).GetListSnapshots(), grpc.WaitForReady(true))
+// NOTE: call is synchronous, use ctx to break early if needed
+func (cli *grpcClient) CommitAsync(ctx context.Context) (*ReqRes, error) {
+	req := types.ToRequestCommit()
+	res, err := cli.client.Commit(ctx, req.GetCommit(), grpc.WaitForReady(true))
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_Commit{Commit: res}})
 }
 
-func (cli *grpcClient) OfferSnapshot(ctx context.Context, params types.RequestOfferSnapshot) (*types.ResponseOfferSnapshot, error) {
-	return cli.client.OfferSnapshot(ctx, types.ToRequestOfferSnapshot(params).GetOfferSnapshot(), grpc.WaitForReady(true))
+// NOTE: call is synchronous, use ctx to break early if needed
+func (cli *grpcClient) InitChainAsync(ctx context.Context, params types.RequestInitChain) (*ReqRes, error) {
+	req := types.ToRequestInitChain(params)
+	res, err := cli.client.InitChain(ctx, req.GetInitChain(), grpc.WaitForReady(true))
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_InitChain{InitChain: res}})
 }
 
-func (cli *grpcClient) LoadSnapshotChunk(ctx context.Context, params types.RequestLoadSnapshotChunk) (*types.ResponseLoadSnapshotChunk, error) {
-	return cli.client.LoadSnapshotChunk(ctx, types.ToRequestLoadSnapshotChunk(params).GetLoadSnapshotChunk(), grpc.WaitForReady(true))
+// NOTE: call is synchronous, use ctx to break early if needed
+func (cli *grpcClient) BeginBlockAsync(ctx context.Context, params types.RequestBeginBlock) (*ReqRes, error) {
+	req := types.ToRequestBeginBlock(params)
+	res, err := cli.client.BeginBlock(ctx, req.GetBeginBlock(), grpc.WaitForReady(true))
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_BeginBlock{BeginBlock: res}})
 }
 
-func (cli *grpcClient) ApplySnapshotChunk(ctx context.Context, params types.RequestApplySnapshotChunk) (*types.ResponseApplySnapshotChunk, error) {
-	return cli.client.ApplySnapshotChunk(ctx, types.ToRequestApplySnapshotChunk(params).GetApplySnapshotChunk(), grpc.WaitForReady(true))
+// NOTE: call is synchronous, use ctx to break early if needed
+func (cli *grpcClient) EndBlockAsync(ctx context.Context, params types.RequestEndBlock) (*ReqRes, error) {
+	req := types.ToRequestEndBlock(params)
+	res, err := cli.client.EndBlock(ctx, req.GetEndBlock(), grpc.WaitForReady(true))
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_EndBlock{EndBlock: res}})
 }
 
-func (cli *grpcClient) PrepareProposal(ctx context.Context, params types.RequestPrepareProposal) (*types.ResponsePrepareProposal, error) {
-	return cli.client.PrepareProposal(ctx, types.ToRequestPrepareProposal(params).GetPrepareProposal(), grpc.WaitForReady(true))
+// NOTE: call is synchronous, use ctx to break early if needed
+func (cli *grpcClient) ListSnapshotsAsync(ctx context.Context, params types.RequestListSnapshots) (*ReqRes, error) {
+	req := types.ToRequestListSnapshots(params)
+	res, err := cli.client.ListSnapshots(ctx, req.GetListSnapshots(), grpc.WaitForReady(true))
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_ListSnapshots{ListSnapshots: res}})
 }
 
-func (cli *grpcClient) ProcessProposal(ctx context.Context, params types.RequestProcessProposal) (*types.ResponseProcessProposal, error) {
-	return cli.client.ProcessProposal(ctx, types.ToRequestProcessProposal(params).GetProcessProposal(), grpc.WaitForReady(true))
+// NOTE: call is synchronous, use ctx to break early if needed
+func (cli *grpcClient) OfferSnapshotAsync(ctx context.Context, params types.RequestOfferSnapshot) (*ReqRes, error) {
+	req := types.ToRequestOfferSnapshot(params)
+	res, err := cli.client.OfferSnapshot(ctx, req.GetOfferSnapshot(), grpc.WaitForReady(true))
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_OfferSnapshot{OfferSnapshot: res}})
 }
 
-func (cli *grpcClient) ExtendVote(ctx context.Context, params types.RequestExtendVote) (*types.ResponseExtendVote, error) {
-	return cli.client.ExtendVote(ctx, types.ToRequestExtendVote(params).GetExtendVote(), grpc.WaitForReady(true))
+// NOTE: call is synchronous, use ctx to break early if needed
+func (cli *grpcClient) LoadSnapshotChunkAsync(
+	ctx context.Context,
+	params types.RequestLoadSnapshotChunk,
+) (*ReqRes, error) {
+	req := types.ToRequestLoadSnapshotChunk(params)
+	res, err := cli.client.LoadSnapshotChunk(ctx, req.GetLoadSnapshotChunk(), grpc.WaitForReady(true))
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_LoadSnapshotChunk{LoadSnapshotChunk: res}})
 }
 
-func (cli *grpcClient) VerifyVoteExtension(ctx context.Context, params types.RequestVerifyVoteExtension) (*types.ResponseVerifyVoteExtension, error) {
-	return cli.client.VerifyVoteExtension(ctx, types.ToRequestVerifyVoteExtension(params).GetVerifyVoteExtension(), grpc.WaitForReady(true))
+// NOTE: call is synchronous, use ctx to break early if needed
+func (cli *grpcClient) ApplySnapshotChunkAsync(
+	ctx context.Context,
+	params types.RequestApplySnapshotChunk,
+) (*ReqRes, error) {
+	req := types.ToRequestApplySnapshotChunk(params)
+	res, err := cli.client.ApplySnapshotChunk(ctx, req.GetApplySnapshotChunk(), grpc.WaitForReady(true))
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishAsyncCall(
+		ctx,
+		req,
+		&types.Response{Value: &types.Response_ApplySnapshotChunk{ApplySnapshotChunk: res}},
+	)
 }
 
-func (cli *grpcClient) FinalizeBlock(ctx context.Context, params types.RequestFinalizeBlock) (*types.ResponseFinalizeBlock, error) {
-	return cli.client.FinalizeBlock(ctx, types.ToRequestFinalizeBlock(params).GetFinalizeBlock(), grpc.WaitForReady(true))
+// finishAsyncCall creates a ReqRes for an async call, and immediately populates it
+// with the response. We don't complete it until it's been ordered via the channel.
+func (cli *grpcClient) finishAsyncCall(ctx context.Context, req *types.Request, res *types.Response) (*ReqRes, error) {
+	reqres := NewReqRes(req)
+	reqres.Response = res
+	select {
+	case cli.chReqRes <- reqres: // use channel for async responses, since they must be ordered
+		return reqres, nil
+	case <-ctx.Done():
+		return nil, ctx.Err()
+	}
+}
+
+// finishSyncCall waits for an async call to complete. It is necessary to call all
+// sync calls asynchronously as well, to maintain call and response ordering via
+// the channel, and this method will wait until the async call completes.
+func (cli *grpcClient) finishSyncCall(reqres *ReqRes) *types.Response {
+	// It's possible that the callback is called twice, since the callback can
+	// be called immediately on SetCallback() in addition to after it has been
+	// set. This is because completing the ReqRes happens in a separate critical
+	// section from the one where the callback is called: there is a race where
+	// SetCallback() is called between completing the ReqRes and dispatching the
+	// callback.
+	//
+	// We also buffer the channel with 1 response, since SetCallback() will be
+	// called synchronously if the reqres is already completed, in which case
+	// it will block on sending to the channel since it hasn't gotten around to
+	// receiving from it yet.
+	//
+	// ReqRes should really handle callback dispatch internally, to guarantee
+	// that it's only called once and avoid the above race conditions.
+	var once sync.Once
+	ch := make(chan *types.Response, 1)
+	reqres.SetCallback(func(res *types.Response) {
+		once.Do(func() {
+			ch <- res
+		})
+	})
+	return <-ch
+}
+
+//----------------------------------------
+
+func (cli *grpcClient) FlushSync(ctx context.Context) error {
+	return nil
+}
+
+func (cli *grpcClient) EchoSync(ctx context.Context, msg string) (*types.ResponseEcho, error) {
+	reqres, err := cli.EchoAsync(ctx, msg)
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishSyncCall(reqres).GetEcho(), cli.Error()
+}
+
+func (cli *grpcClient) InfoSync(
+	ctx context.Context,
+	req types.RequestInfo,
+) (*types.ResponseInfo, error) {
+	reqres, err := cli.InfoAsync(ctx, req)
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishSyncCall(reqres).GetInfo(), cli.Error()
+}
+
+func (cli *grpcClient) DeliverTxSync(
+	ctx context.Context,
+	params types.RequestDeliverTx,
+) (*types.ResponseDeliverTx, error) {
+
+	reqres, err := cli.DeliverTxAsync(ctx, params)
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishSyncCall(reqres).GetDeliverTx(), cli.Error()
+}
+
+func (cli *grpcClient) CheckTxSync(
+	ctx context.Context,
+	params types.RequestCheckTx,
+) (*types.ResponseCheckTx, error) {
+
+	reqres, err := cli.CheckTxAsync(ctx, params)
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishSyncCall(reqres).GetCheckTx(), cli.Error()
+}
+
+func (cli *grpcClient) QuerySync(
+	ctx context.Context,
+	req types.RequestQuery,
+) (*types.ResponseQuery, error) {
+	reqres, err := cli.QueryAsync(ctx, req)
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishSyncCall(reqres).GetQuery(), cli.Error()
+}
+
+func (cli *grpcClient) CommitSync(ctx context.Context) (*types.ResponseCommit, error) {
+	reqres, err := cli.CommitAsync(ctx)
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishSyncCall(reqres).GetCommit(), cli.Error()
+}
+
+func (cli *grpcClient) InitChainSync(
+	ctx context.Context,
+	params types.RequestInitChain,
+) (*types.ResponseInitChain, error) {
+
+	reqres, err := cli.InitChainAsync(ctx, params)
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishSyncCall(reqres).GetInitChain(), cli.Error()
+}
+
+func (cli *grpcClient) BeginBlockSync(
+	ctx context.Context,
+	params types.RequestBeginBlock,
+) (*types.ResponseBeginBlock, error) {
+
+	reqres, err := cli.BeginBlockAsync(ctx, params)
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishSyncCall(reqres).GetBeginBlock(), cli.Error()
+}
+
+func (cli *grpcClient) EndBlockSync(
+	ctx context.Context,
+	params types.RequestEndBlock,
+) (*types.ResponseEndBlock, error) {
+
+	reqres, err := cli.EndBlockAsync(ctx, params)
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishSyncCall(reqres).GetEndBlock(), cli.Error()
+}
+
+func (cli *grpcClient) ListSnapshotsSync(
+	ctx context.Context,
+	params types.RequestListSnapshots,
+) (*types.ResponseListSnapshots, error) {
+
+	reqres, err := cli.ListSnapshotsAsync(ctx, params)
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishSyncCall(reqres).GetListSnapshots(), cli.Error()
+}
+
+func (cli *grpcClient) OfferSnapshotSync(
+	ctx context.Context,
+	params types.RequestOfferSnapshot,
+) (*types.ResponseOfferSnapshot, error) {
+
+	reqres, err := cli.OfferSnapshotAsync(ctx, params)
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishSyncCall(reqres).GetOfferSnapshot(), cli.Error()
+}
+
+func (cli *grpcClient) LoadSnapshotChunkSync(
+	ctx context.Context,
+	params types.RequestLoadSnapshotChunk) (*types.ResponseLoadSnapshotChunk, error) {
+
+	reqres, err := cli.LoadSnapshotChunkAsync(ctx, params)
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishSyncCall(reqres).GetLoadSnapshotChunk(), cli.Error()
+}
+
+func (cli *grpcClient) ApplySnapshotChunkSync(
+	ctx context.Context,
+	params types.RequestApplySnapshotChunk) (*types.ResponseApplySnapshotChunk, error) {
+
+	reqres, err := cli.ApplySnapshotChunkAsync(ctx, params)
+	if err != nil {
+		return nil, err
+	}
+	return cli.finishSyncCall(reqres).GetApplySnapshotChunk(), cli.Error()
 }

abci/client/local_client.go

@@ -1,10 +1,10 @@
-package abciclient
+package abcicli
 
 import (
 	"context"
 
 	types "github.com/tendermint/tendermint/abci/types"
-	"github.com/tendermint/tendermint/libs/log"
+	tmsync "github.com/tendermint/tendermint/internal/libs/sync"
 	"github.com/tendermint/tendermint/libs/service"
 )
 
@@ -14,7 +14,10 @@ import (
 // RPC endpoint), but defers are used everywhere for the sake of consistency.
 type localClient struct {
 	service.BaseService
+
+	mtx *tmsync.RWMutex
 	types.Application
+	Callback
 }
 
 var _ Client = (*localClient)(nil)
@@ -22,93 +25,337 @@ var _ Client = (*localClient)(nil)
 // NewLocalClient creates a local client, which will be directly calling the
 // methods of the given app.
 //
-// The client methods ignore their context argument.
-func NewLocalClient(logger log.Logger, app types.Application) Client {
+// Both Async and Sync methods ignore the given context.Context parameter.
+func NewLocalClient(mtx *tmsync.RWMutex, app types.Application) Client {
+	if mtx == nil {
+		mtx = &tmsync.RWMutex{}
+	}
+
 	cli := &localClient{
+		mtx:         mtx,
 		Application: app,
 	}
-	cli.BaseService = *service.NewBaseService(logger, "localClient", cli)
+
+	cli.BaseService = *service.NewBaseService(nil, "localClient", cli)
 	return cli
 }
 
-func (*localClient) OnStart(context.Context) error { return nil }
-func (*localClient) OnStop()                       {}
-func (*localClient) Error() error                  { return nil }
+func (app *localClient) SetResponseCallback(cb Callback) {
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+	app.Callback = cb
+}
+
+// TODO: change types.Application to include Error()?
+func (app *localClient) Error() error {
+	return nil
+}
+
+func (app *localClient) FlushAsync(ctx context.Context) (*ReqRes, error) {
+	// Do nothing
+	return newLocalReqRes(types.ToRequestFlush(), nil), nil
+}
+
+func (app *localClient) EchoAsync(ctx context.Context, msg string) (*ReqRes, error) {
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
+	return app.callback(
+		types.ToRequestEcho(msg),
+		types.ToResponseEcho(msg),
+	), nil
+}
+
+func (app *localClient) InfoAsync(ctx context.Context, req types.RequestInfo) (*ReqRes, error) {
+	app.mtx.RLock()
+	defer app.mtx.RUnlock()
+
+	res := app.Application.Info(req)
+	return app.callback(
+		types.ToRequestInfo(req),
+		types.ToResponseInfo(res),
+	), nil
+}
+
+func (app *localClient) DeliverTxAsync(ctx context.Context, params types.RequestDeliverTx) (*ReqRes, error) {
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
+	res := app.Application.DeliverTx(params)
+	return app.callback(
+		types.ToRequestDeliverTx(params),
+		types.ToResponseDeliverTx(res),
+	), nil
+}
+
+func (app *localClient) CheckTxAsync(ctx context.Context, req types.RequestCheckTx) (*ReqRes, error) {
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
+	res := app.Application.CheckTx(req)
+	return app.callback(
+		types.ToRequestCheckTx(req),
+		types.ToResponseCheckTx(res),
+	), nil
+}
+
+func (app *localClient) QueryAsync(ctx context.Context, req types.RequestQuery) (*ReqRes, error) {
+	app.mtx.RLock()
+	defer app.mtx.RUnlock()
+
+	res := app.Application.Query(req)
+	return app.callback(
+		types.ToRequestQuery(req),
+		types.ToResponseQuery(res),
+	), nil
+}
+
+func (app *localClient) CommitAsync(ctx context.Context) (*ReqRes, error) {
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
+	res := app.Application.Commit()
+	return app.callback(
+		types.ToRequestCommit(),
+		types.ToResponseCommit(res),
+	), nil
+}
+
+func (app *localClient) InitChainAsync(ctx context.Context, req types.RequestInitChain) (*ReqRes, error) {
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
+	res := app.Application.InitChain(req)
+	return app.callback(
+		types.ToRequestInitChain(req),
+		types.ToResponseInitChain(res),
+	), nil
+}
+
+func (app *localClient) BeginBlockAsync(ctx context.Context, req types.RequestBeginBlock) (*ReqRes, error) {
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
+	res := app.Application.BeginBlock(req)
+	return app.callback(
+		types.ToRequestBeginBlock(req),
+		types.ToResponseBeginBlock(res),
+	), nil
+}
+
+func (app *localClient) EndBlockAsync(ctx context.Context, req types.RequestEndBlock) (*ReqRes, error) {
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
+	res := app.Application.EndBlock(req)
+	return app.callback(
+		types.ToRequestEndBlock(req),
+		types.ToResponseEndBlock(res),
+	), nil
+}
+
+func (app *localClient) ListSnapshotsAsync(ctx context.Context, req types.RequestListSnapshots) (*ReqRes, error) {
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
+	res := app.Application.ListSnapshots(req)
+	return app.callback(
+		types.ToRequestListSnapshots(req),
+		types.ToResponseListSnapshots(res),
+	), nil
+}
+
+func (app *localClient) OfferSnapshotAsync(ctx context.Context, req types.RequestOfferSnapshot) (*ReqRes, error) {
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
+	res := app.Application.OfferSnapshot(req)
+	return app.callback(
+		types.ToRequestOfferSnapshot(req),
+		types.ToResponseOfferSnapshot(res),
+	), nil
+}
+
+func (app *localClient) LoadSnapshotChunkAsync(
+	ctx context.Context,
+	req types.RequestLoadSnapshotChunk,
+) (*ReqRes, error) {
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
+	res := app.Application.LoadSnapshotChunk(req)
+	return app.callback(
+		types.ToRequestLoadSnapshotChunk(req),
+		types.ToResponseLoadSnapshotChunk(res),
+	), nil
+}
+
+func (app *localClient) ApplySnapshotChunkAsync(
+	ctx context.Context,
+	req types.RequestApplySnapshotChunk,
+) (*ReqRes, error) {
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
+	res := app.Application.ApplySnapshotChunk(req)
+	return app.callback(
+		types.ToRequestApplySnapshotChunk(req),
+		types.ToResponseApplySnapshotChunk(res),
+	), nil
+}
 
 //-------------------------------------------------------
 
-func (*localClient) Flush(context.Context) error { return nil }
+func (app *localClient) FlushSync(ctx context.Context) error {
+	return nil
+}
 
-func (app *localClient) Echo(_ context.Context, msg string) (*types.ResponseEcho, error) {
+func (app *localClient) EchoSync(ctx context.Context, msg string) (*types.ResponseEcho, error) {
 	return &types.ResponseEcho{Message: msg}, nil
 }
 
-func (app *localClient) Info(ctx context.Context, req types.RequestInfo) (*types.ResponseInfo, error) {
+func (app *localClient) InfoSync(ctx context.Context, req types.RequestInfo) (*types.ResponseInfo, error) {
+	app.mtx.RLock()
+	defer app.mtx.RUnlock()
+
 	res := app.Application.Info(req)
 	return &res, nil
 }
 
-func (app *localClient) CheckTx(_ context.Context, req types.RequestCheckTx) (*types.ResponseCheckTx, error) {
+func (app *localClient) DeliverTxSync(
+	ctx context.Context,
+	req types.RequestDeliverTx,
+) (*types.ResponseDeliverTx, error) {
+
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
+	res := app.Application.DeliverTx(req)
+	return &res, nil
+}
+
+func (app *localClient) CheckTxSync(
+	ctx context.Context,
+	req types.RequestCheckTx,
+) (*types.ResponseCheckTx, error) {
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
 	res := app.Application.CheckTx(req)
 	return &res, nil
 }
 
-func (app *localClient) Query(_ context.Context, req types.RequestQuery) (*types.ResponseQuery, error) {
+func (app *localClient) QuerySync(
+	ctx context.Context,
+	req types.RequestQuery,
+) (*types.ResponseQuery, error) {
+	app.mtx.RLock()
+	defer app.mtx.RUnlock()
+
 	res := app.Application.Query(req)
 	return &res, nil
 }
 
-func (app *localClient) Commit(ctx context.Context) (*types.ResponseCommit, error) {
+func (app *localClient) CommitSync(ctx context.Context) (*types.ResponseCommit, error) {
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
 	res := app.Application.Commit()
 	return &res, nil
 }
 
-func (app *localClient) InitChain(_ context.Context, req types.RequestInitChain) (*types.ResponseInitChain, error) {
+func (app *localClient) InitChainSync(
+	ctx context.Context,
+	req types.RequestInitChain,
+) (*types.ResponseInitChain, error) {
+
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
 	res := app.Application.InitChain(req)
 	return &res, nil
 }
 
-func (app *localClient) ListSnapshots(_ context.Context, req types.RequestListSnapshots) (*types.ResponseListSnapshots, error) {
+func (app *localClient) BeginBlockSync(
+	ctx context.Context,
+	req types.RequestBeginBlock,
+) (*types.ResponseBeginBlock, error) {
+
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
+	res := app.Application.BeginBlock(req)
+	return &res, nil
+}
+
+func (app *localClient) EndBlockSync(
+	ctx context.Context,
+	req types.RequestEndBlock,
+) (*types.ResponseEndBlock, error) {
+
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
+	res := app.Application.EndBlock(req)
+	return &res, nil
+}
+
+func (app *localClient) ListSnapshotsSync(
+	ctx context.Context,
+	req types.RequestListSnapshots,
+) (*types.ResponseListSnapshots, error) {
+
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
 	res := app.Application.ListSnapshots(req)
 	return &res, nil
 }
 
-func (app *localClient) OfferSnapshot(_ context.Context, req types.RequestOfferSnapshot) (*types.ResponseOfferSnapshot, error) {
+func (app *localClient) OfferSnapshotSync(
+	ctx context.Context,
+	req types.RequestOfferSnapshot,
+) (*types.ResponseOfferSnapshot, error) {
+
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
 	res := app.Application.OfferSnapshot(req)
 	return &res, nil
 }
 
-func (app *localClient) LoadSnapshotChunk(_ context.Context, req types.RequestLoadSnapshotChunk) (*types.ResponseLoadSnapshotChunk, error) {
+func (app *localClient) LoadSnapshotChunkSync(
+	ctx context.Context,
+	req types.RequestLoadSnapshotChunk) (*types.ResponseLoadSnapshotChunk, error) {
+
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
 	res := app.Application.LoadSnapshotChunk(req)
 	return &res, nil
 }
 
-func (app *localClient) ApplySnapshotChunk(_ context.Context, req types.RequestApplySnapshotChunk) (*types.ResponseApplySnapshotChunk, error) {
+func (app *localClient) ApplySnapshotChunkSync(
+	ctx context.Context,
+	req types.RequestApplySnapshotChunk) (*types.ResponseApplySnapshotChunk, error) {
+
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
 	res := app.Application.ApplySnapshotChunk(req)
 	return &res, nil
 }
 
-func (app *localClient) PrepareProposal(_ context.Context, req types.RequestPrepareProposal) (*types.ResponsePrepareProposal, error) {
-	res := app.Application.PrepareProposal(req)
-	return &res, nil
+//-------------------------------------------------------
+
+func (app *localClient) callback(req *types.Request, res *types.Response) *ReqRes {
+	app.Callback(req, res)
+	return newLocalReqRes(req, res)
 }
 
-func (app *localClient) ProcessProposal(_ context.Context, req types.RequestProcessProposal) (*types.ResponseProcessProposal, error) {
-	res := app.Application.ProcessProposal(req)
-	return &res, nil
-}
-
-func (app *localClient) ExtendVote(_ context.Context, req types.RequestExtendVote) (*types.ResponseExtendVote, error) {
-	res := app.Application.ExtendVote(req)
-	return &res, nil
-}
-
-func (app *localClient) VerifyVoteExtension(_ context.Context, req types.RequestVerifyVoteExtension) (*types.ResponseVerifyVoteExtension, error) {
-	res := app.Application.VerifyVoteExtension(req)
-	return &res, nil
-}
-
-func (app *localClient) FinalizeBlock(_ context.Context, req types.RequestFinalizeBlock) (*types.ResponseFinalizeBlock, error) {
-	res := app.Application.FinalizeBlock(req)
-	return &res, nil
+func newLocalReqRes(req *types.Request, res *types.Response) *ReqRes {
+	reqRes := NewReqRes(req)
+	reqRes.Response = res
+	reqRes.SetDone()
+	return reqRes
 }

abci/client/mocks/client.go

@@ -5,7 +5,12 @@ package mocks
 import (
 	context "context"
 
+	abcicli "github.com/tendermint/tendermint/abci/client"
+
+	log "github.com/tendermint/tendermint/libs/log"
+
 	mock "github.com/stretchr/testify/mock"
+
 	types "github.com/tendermint/tendermint/abci/types"
 )
 
@@ -14,8 +19,31 @@ type Client struct {
 	mock.Mock
 }
 
-// ApplySnapshotChunk provides a mock function with given fields: _a0, _a1
-func (_m *Client) ApplySnapshotChunk(_a0 context.Context, _a1 types.RequestApplySnapshotChunk) (*types.ResponseApplySnapshotChunk, error) {
+// ApplySnapshotChunkAsync provides a mock function with given fields: _a0, _a1
+func (_m *Client) ApplySnapshotChunkAsync(_a0 context.Context, _a1 types.RequestApplySnapshotChunk) (*abcicli.ReqRes, error) {
+	ret := _m.Called(_a0, _a1)
+
+	var r0 *abcicli.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestApplySnapshotChunk) *abcicli.ReqRes); ok {
+		r0 = rf(_a0, _a1)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*abcicli.ReqRes)
+		}
+	}
+
+	var r1 error
+	if rf, ok := ret.Get(1).(func(context.Context, types.RequestApplySnapshotChunk) error); ok {
+		r1 = rf(_a0, _a1)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// ApplySnapshotChunkSync provides a mock function with given fields: _a0, _a1
+func (_m *Client) ApplySnapshotChunkSync(_a0 context.Context, _a1 types.RequestApplySnapshotChunk) (*types.ResponseApplySnapshotChunk, error) {
 	ret := _m.Called(_a0, _a1)
 
 	var r0 *types.ResponseApplySnapshotChunk
@@ -37,8 +65,77 @@ func (_m *Client) ApplySnapshotChunk(_a0 context.Context, _a1 types.RequestApply
 	return r0, r1
 }
 
-// CheckTx provides a mock function with given fields: _a0, _a1
-func (_m *Client) CheckTx(_a0 context.Context, _a1 types.RequestCheckTx) (*types.ResponseCheckTx, error) {
+// BeginBlockAsync provides a mock function with given fields: _a0, _a1
+func (_m *Client) BeginBlockAsync(_a0 context.Context, _a1 types.RequestBeginBlock) (*abcicli.ReqRes, error) {
+	ret := _m.Called(_a0, _a1)
+
+	var r0 *abcicli.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestBeginBlock) *abcicli.ReqRes); ok {
+		r0 = rf(_a0, _a1)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*abcicli.ReqRes)
+		}
+	}
+
+	var r1 error
+	if rf, ok := ret.Get(1).(func(context.Context, types.RequestBeginBlock) error); ok {
+		r1 = rf(_a0, _a1)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// BeginBlockSync provides a mock function with given fields: _a0, _a1
+func (_m *Client) BeginBlockSync(_a0 context.Context, _a1 types.RequestBeginBlock) (*types.ResponseBeginBlock, error) {
+	ret := _m.Called(_a0, _a1)
+
+	var r0 *types.ResponseBeginBlock
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestBeginBlock) *types.ResponseBeginBlock); ok {
+		r0 = rf(_a0, _a1)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*types.ResponseBeginBlock)
+		}
+	}
+
+	var r1 error
+	if rf, ok := ret.Get(1).(func(context.Context, types.RequestBeginBlock) error); ok {
+		r1 = rf(_a0, _a1)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// CheckTxAsync provides a mock function with given fields: _a0, _a1
+func (_m *Client) CheckTxAsync(_a0 context.Context, _a1 types.RequestCheckTx) (*abcicli.ReqRes, error) {
+	ret := _m.Called(_a0, _a1)
+
+	var r0 *abcicli.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestCheckTx) *abcicli.ReqRes); ok {
+		r0 = rf(_a0, _a1)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*abcicli.ReqRes)
+		}
+	}
+
+	var r1 error
+	if rf, ok := ret.Get(1).(func(context.Context, types.RequestCheckTx) error); ok {
+		r1 = rf(_a0, _a1)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// CheckTxSync provides a mock function with given fields: _a0, _a1
+func (_m *Client) CheckTxSync(_a0 context.Context, _a1 types.RequestCheckTx) (*types.ResponseCheckTx, error) {
 	ret := _m.Called(_a0, _a1)
 
 	var r0 *types.ResponseCheckTx
@@ -60,8 +157,31 @@ func (_m *Client) CheckTx(_a0 context.Context, _a1 types.RequestCheckTx) (*types
 	return r0, r1
 }
 
-// Commit provides a mock function with given fields: _a0
-func (_m *Client) Commit(_a0 context.Context) (*types.ResponseCommit, error) {
+// CommitAsync provides a mock function with given fields: _a0
+func (_m *Client) CommitAsync(_a0 context.Context) (*abcicli.ReqRes, error) {
+	ret := _m.Called(_a0)
+
+	var r0 *abcicli.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context) *abcicli.ReqRes); ok {
+		r0 = rf(_a0)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*abcicli.ReqRes)
+		}
+	}
+
+	var r1 error
+	if rf, ok := ret.Get(1).(func(context.Context) error); ok {
+		r1 = rf(_a0)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// CommitSync provides a mock function with given fields: _a0
+func (_m *Client) CommitSync(_a0 context.Context) (*types.ResponseCommit, error) {
 	ret := _m.Called(_a0)
 
 	var r0 *types.ResponseCommit
@@ -83,8 +203,77 @@ func (_m *Client) Commit(_a0 context.Context) (*types.ResponseCommit, error) {
 	return r0, r1
 }
 
-// Echo provides a mock function with given fields: ctx, msg
-func (_m *Client) Echo(ctx context.Context, msg string) (*types.ResponseEcho, error) {
+// DeliverTxAsync provides a mock function with given fields: _a0, _a1
+func (_m *Client) DeliverTxAsync(_a0 context.Context, _a1 types.RequestDeliverTx) (*abcicli.ReqRes, error) {
+	ret := _m.Called(_a0, _a1)
+
+	var r0 *abcicli.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestDeliverTx) *abcicli.ReqRes); ok {
+		r0 = rf(_a0, _a1)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*abcicli.ReqRes)
+		}
+	}
+
+	var r1 error
+	if rf, ok := ret.Get(1).(func(context.Context, types.RequestDeliverTx) error); ok {
+		r1 = rf(_a0, _a1)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// DeliverTxSync provides a mock function with given fields: _a0, _a1
+func (_m *Client) DeliverTxSync(_a0 context.Context, _a1 types.RequestDeliverTx) (*types.ResponseDeliverTx, error) {
+	ret := _m.Called(_a0, _a1)
+
+	var r0 *types.ResponseDeliverTx
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestDeliverTx) *types.ResponseDeliverTx); ok {
+		r0 = rf(_a0, _a1)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*types.ResponseDeliverTx)
+		}
+	}
+
+	var r1 error
+	if rf, ok := ret.Get(1).(func(context.Context, types.RequestDeliverTx) error); ok {
+		r1 = rf(_a0, _a1)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// EchoAsync provides a mock function with given fields: ctx, msg
+func (_m *Client) EchoAsync(ctx context.Context, msg string) (*abcicli.ReqRes, error) {
+	ret := _m.Called(ctx, msg)
+
+	var r0 *abcicli.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context, string) *abcicli.ReqRes); ok {
+		r0 = rf(ctx, msg)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*abcicli.ReqRes)
+		}
+	}
+
+	var r1 error
+	if rf, ok := ret.Get(1).(func(context.Context, string) error); ok {
+		r1 = rf(ctx, msg)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// EchoSync provides a mock function with given fields: ctx, msg
+func (_m *Client) EchoSync(ctx context.Context, msg string) (*types.ResponseEcho, error) {
 	ret := _m.Called(ctx, msg)
 
 	var r0 *types.ResponseEcho
@@ -106,6 +295,52 @@ func (_m *Client) Echo(ctx context.Context, msg string) (*types.ResponseEcho, er
 	return r0, r1
 }
 
+// EndBlockAsync provides a mock function with given fields: _a0, _a1
+func (_m *Client) EndBlockAsync(_a0 context.Context, _a1 types.RequestEndBlock) (*abcicli.ReqRes, error) {
+	ret := _m.Called(_a0, _a1)
+
+	var r0 *abcicli.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestEndBlock) *abcicli.ReqRes); ok {
+		r0 = rf(_a0, _a1)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*abcicli.ReqRes)
+		}
+	}
+
+	var r1 error
+	if rf, ok := ret.Get(1).(func(context.Context, types.RequestEndBlock) error); ok {
+		r1 = rf(_a0, _a1)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// EndBlockSync provides a mock function with given fields: _a0, _a1
+func (_m *Client) EndBlockSync(_a0 context.Context, _a1 types.RequestEndBlock) (*types.ResponseEndBlock, error) {
+	ret := _m.Called(_a0, _a1)
+
+	var r0 *types.ResponseEndBlock
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestEndBlock) *types.ResponseEndBlock); ok {
+		r0 = rf(_a0, _a1)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*types.ResponseEndBlock)
+		}
+	}
+
+	var r1 error
+	if rf, ok := ret.Get(1).(func(context.Context, types.RequestEndBlock) error); ok {
+		r1 = rf(_a0, _a1)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
 // Error provides a mock function with given fields:
 func (_m *Client) Error() error {
 	ret := _m.Called()
@@ -120,22 +355,22 @@ func (_m *Client) Error() error {
 	return r0
 }
 
-// ExtendVote provides a mock function with given fields: _a0, _a1
-func (_m *Client) ExtendVote(_a0 context.Context, _a1 types.RequestExtendVote) (*types.ResponseExtendVote, error) {
-	ret := _m.Called(_a0, _a1)
+// FlushAsync provides a mock function with given fields: _a0
+func (_m *Client) FlushAsync(_a0 context.Context) (*abcicli.ReqRes, error) {
+	ret := _m.Called(_a0)
 
-	var r0 *types.ResponseExtendVote
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestExtendVote) *types.ResponseExtendVote); ok {
-		r0 = rf(_a0, _a1)
+	var r0 *abcicli.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context) *abcicli.ReqRes); ok {
+		r0 = rf(_a0)
 	} else {
 		if ret.Get(0) != nil {
-			r0 = ret.Get(0).(*types.ResponseExtendVote)
+			r0 = ret.Get(0).(*abcicli.ReqRes)
 		}
 	}
 
 	var r1 error
-	if rf, ok := ret.Get(1).(func(context.Context, types.RequestExtendVote) error); ok {
-		r1 = rf(_a0, _a1)
+	if rf, ok := ret.Get(1).(func(context.Context) error); ok {
+		r1 = rf(_a0)
 	} else {
 		r1 = ret.Error(1)
 	}
@@ -143,31 +378,8 @@ func (_m *Client) ExtendVote(_a0 context.Context, _a1 types.RequestExtendVote) (
 	return r0, r1
 }
 
-// FinalizeBlock provides a mock function with given fields: _a0, _a1
-func (_m *Client) FinalizeBlock(_a0 context.Context, _a1 types.RequestFinalizeBlock) (*types.ResponseFinalizeBlock, error) {
-	ret := _m.Called(_a0, _a1)
-
-	var r0 *types.ResponseFinalizeBlock
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestFinalizeBlock) *types.ResponseFinalizeBlock); ok {
-		r0 = rf(_a0, _a1)
-	} else {
-		if ret.Get(0) != nil {
-			r0 = ret.Get(0).(*types.ResponseFinalizeBlock)
-		}
-	}
-
-	var r1 error
-	if rf, ok := ret.Get(1).(func(context.Context, types.RequestFinalizeBlock) error); ok {
-		r1 = rf(_a0, _a1)
-	} else {
-		r1 = ret.Error(1)
-	}
-
-	return r0, r1
-}
-
-// Flush provides a mock function with given fields: _a0
-func (_m *Client) Flush(_a0 context.Context) error {
+// FlushSync provides a mock function with given fields: _a0
+func (_m *Client) FlushSync(_a0 context.Context) error {
 	ret := _m.Called(_a0)
 
 	var r0 error
@@ -180,8 +392,31 @@ func (_m *Client) Flush(_a0 context.Context) error {
 	return r0
 }
 
-// Info provides a mock function with given fields: _a0, _a1
-func (_m *Client) Info(_a0 context.Context, _a1 types.RequestInfo) (*types.ResponseInfo, error) {
+// InfoAsync provides a mock function with given fields: _a0, _a1
+func (_m *Client) InfoAsync(_a0 context.Context, _a1 types.RequestInfo) (*abcicli.ReqRes, error) {
+	ret := _m.Called(_a0, _a1)
+
+	var r0 *abcicli.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestInfo) *abcicli.ReqRes); ok {
+		r0 = rf(_a0, _a1)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*abcicli.ReqRes)
+		}
+	}
+
+	var r1 error
+	if rf, ok := ret.Get(1).(func(context.Context, types.RequestInfo) error); ok {
+		r1 = rf(_a0, _a1)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// InfoSync provides a mock function with given fields: _a0, _a1
+func (_m *Client) InfoSync(_a0 context.Context, _a1 types.RequestInfo) (*types.ResponseInfo, error) {
 	ret := _m.Called(_a0, _a1)
 
 	var r0 *types.ResponseInfo
@@ -203,8 +438,31 @@ func (_m *Client) Info(_a0 context.Context, _a1 types.RequestInfo) (*types.Respo
 	return r0, r1
 }
 
-// InitChain provides a mock function with given fields: _a0, _a1
-func (_m *Client) InitChain(_a0 context.Context, _a1 types.RequestInitChain) (*types.ResponseInitChain, error) {
+// InitChainAsync provides a mock function with given fields: _a0, _a1
+func (_m *Client) InitChainAsync(_a0 context.Context, _a1 types.RequestInitChain) (*abcicli.ReqRes, error) {
+	ret := _m.Called(_a0, _a1)
+
+	var r0 *abcicli.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestInitChain) *abcicli.ReqRes); ok {
+		r0 = rf(_a0, _a1)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*abcicli.ReqRes)
+		}
+	}
+
+	var r1 error
+	if rf, ok := ret.Get(1).(func(context.Context, types.RequestInitChain) error); ok {
+		r1 = rf(_a0, _a1)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// InitChainSync provides a mock function with given fields: _a0, _a1
+func (_m *Client) InitChainSync(_a0 context.Context, _a1 types.RequestInitChain) (*types.ResponseInitChain, error) {
 	ret := _m.Called(_a0, _a1)
 
 	var r0 *types.ResponseInitChain
@@ -240,8 +498,31 @@ func (_m *Client) IsRunning() bool {
 	return r0
 }
 
-// ListSnapshots provides a mock function with given fields: _a0, _a1
-func (_m *Client) ListSnapshots(_a0 context.Context, _a1 types.RequestListSnapshots) (*types.ResponseListSnapshots, error) {
+// ListSnapshotsAsync provides a mock function with given fields: _a0, _a1
+func (_m *Client) ListSnapshotsAsync(_a0 context.Context, _a1 types.RequestListSnapshots) (*abcicli.ReqRes, error) {
+	ret := _m.Called(_a0, _a1)
+
+	var r0 *abcicli.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestListSnapshots) *abcicli.ReqRes); ok {
+		r0 = rf(_a0, _a1)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*abcicli.ReqRes)
+		}
+	}
+
+	var r1 error
+	if rf, ok := ret.Get(1).(func(context.Context, types.RequestListSnapshots) error); ok {
+		r1 = rf(_a0, _a1)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// ListSnapshotsSync provides a mock function with given fields: _a0, _a1
+func (_m *Client) ListSnapshotsSync(_a0 context.Context, _a1 types.RequestListSnapshots) (*types.ResponseListSnapshots, error) {
 	ret := _m.Called(_a0, _a1)
 
 	var r0 *types.ResponseListSnapshots
@@ -263,8 +544,31 @@ func (_m *Client) ListSnapshots(_a0 context.Context, _a1 types.RequestListSnapsh
 	return r0, r1
 }
 
-// LoadSnapshotChunk provides a mock function with given fields: _a0, _a1
-func (_m *Client) LoadSnapshotChunk(_a0 context.Context, _a1 types.RequestLoadSnapshotChunk) (*types.ResponseLoadSnapshotChunk, error) {
+// LoadSnapshotChunkAsync provides a mock function with given fields: _a0, _a1
+func (_m *Client) LoadSnapshotChunkAsync(_a0 context.Context, _a1 types.RequestLoadSnapshotChunk) (*abcicli.ReqRes, error) {
+	ret := _m.Called(_a0, _a1)
+
+	var r0 *abcicli.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestLoadSnapshotChunk) *abcicli.ReqRes); ok {
+		r0 = rf(_a0, _a1)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*abcicli.ReqRes)
+		}
+	}
+
+	var r1 error
+	if rf, ok := ret.Get(1).(func(context.Context, types.RequestLoadSnapshotChunk) error); ok {
+		r1 = rf(_a0, _a1)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// LoadSnapshotChunkSync provides a mock function with given fields: _a0, _a1
+func (_m *Client) LoadSnapshotChunkSync(_a0 context.Context, _a1 types.RequestLoadSnapshotChunk) (*types.ResponseLoadSnapshotChunk, error) {
 	ret := _m.Called(_a0, _a1)
 
 	var r0 *types.ResponseLoadSnapshotChunk
@@ -286,8 +590,31 @@ func (_m *Client) LoadSnapshotChunk(_a0 context.Context, _a1 types.RequestLoadSn
 	return r0, r1
 }
 
-// OfferSnapshot provides a mock function with given fields: _a0, _a1
-func (_m *Client) OfferSnapshot(_a0 context.Context, _a1 types.RequestOfferSnapshot) (*types.ResponseOfferSnapshot, error) {
+// OfferSnapshotAsync provides a mock function with given fields: _a0, _a1
+func (_m *Client) OfferSnapshotAsync(_a0 context.Context, _a1 types.RequestOfferSnapshot) (*abcicli.ReqRes, error) {
+	ret := _m.Called(_a0, _a1)
+
+	var r0 *abcicli.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestOfferSnapshot) *abcicli.ReqRes); ok {
+		r0 = rf(_a0, _a1)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*abcicli.ReqRes)
+		}
+	}
+
+	var r1 error
+	if rf, ok := ret.Get(1).(func(context.Context, types.RequestOfferSnapshot) error); ok {
+		r1 = rf(_a0, _a1)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// OfferSnapshotSync provides a mock function with given fields: _a0, _a1
+func (_m *Client) OfferSnapshotSync(_a0 context.Context, _a1 types.RequestOfferSnapshot) (*types.ResponseOfferSnapshot, error) {
 	ret := _m.Called(_a0, _a1)
 
 	var r0 *types.ResponseOfferSnapshot
@@ -309,21 +636,54 @@ func (_m *Client) OfferSnapshot(_a0 context.Context, _a1 types.RequestOfferSnaps
 	return r0, r1
 }
 
-// PrepareProposal provides a mock function with given fields: _a0, _a1
-func (_m *Client) PrepareProposal(_a0 context.Context, _a1 types.RequestPrepareProposal) (*types.ResponsePrepareProposal, error) {
+// OnReset provides a mock function with given fields:
+func (_m *Client) OnReset() error {
+	ret := _m.Called()
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func() error); ok {
+		r0 = rf()
+	} else {
+		r0 = ret.Error(0)
+	}
+
+	return r0
+}
+
+// OnStart provides a mock function with given fields:
+func (_m *Client) OnStart() error {
+	ret := _m.Called()
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func() error); ok {
+		r0 = rf()
+	} else {
+		r0 = ret.Error(0)
+	}
+
+	return r0
+}
+
+// OnStop provides a mock function with given fields:
+func (_m *Client) OnStop() {
+	_m.Called()
+}
+
+// QueryAsync provides a mock function with given fields: _a0, _a1
+func (_m *Client) QueryAsync(_a0 context.Context, _a1 types.RequestQuery) (*abcicli.ReqRes, error) {
 	ret := _m.Called(_a0, _a1)
 
-	var r0 *types.ResponsePrepareProposal
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestPrepareProposal) *types.ResponsePrepareProposal); ok {
+	var r0 *abcicli.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestQuery) *abcicli.ReqRes); ok {
 		r0 = rf(_a0, _a1)
 	} else {
 		if ret.Get(0) != nil {
-			r0 = ret.Get(0).(*types.ResponsePrepareProposal)
+			r0 = ret.Get(0).(*abcicli.ReqRes)
 		}
 	}
 
 	var r1 error
-	if rf, ok := ret.Get(1).(func(context.Context, types.RequestPrepareProposal) error); ok {
+	if rf, ok := ret.Get(1).(func(context.Context, types.RequestQuery) error); ok {
 		r1 = rf(_a0, _a1)
 	} else {
 		r1 = ret.Error(1)
@@ -332,31 +692,8 @@ func (_m *Client) PrepareProposal(_a0 context.Context, _a1 types.RequestPrepareP
 	return r0, r1
 }
 
-// ProcessProposal provides a mock function with given fields: _a0, _a1
-func (_m *Client) ProcessProposal(_a0 context.Context, _a1 types.RequestProcessProposal) (*types.ResponseProcessProposal, error) {
-	ret := _m.Called(_a0, _a1)
-
-	var r0 *types.ResponseProcessProposal
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestProcessProposal) *types.ResponseProcessProposal); ok {
-		r0 = rf(_a0, _a1)
-	} else {
-		if ret.Get(0) != nil {
-			r0 = ret.Get(0).(*types.ResponseProcessProposal)
-		}
-	}
-
-	var r1 error
-	if rf, ok := ret.Get(1).(func(context.Context, types.RequestProcessProposal) error); ok {
-		r1 = rf(_a0, _a1)
-	} else {
-		r1 = ret.Error(1)
-	}
-
-	return r0, r1
-}
-
-// Query provides a mock function with given fields: _a0, _a1
-func (_m *Client) Query(_a0 context.Context, _a1 types.RequestQuery) (*types.ResponseQuery, error) {
+// QuerySync provides a mock function with given fields: _a0, _a1
+func (_m *Client) QuerySync(_a0 context.Context, _a1 types.RequestQuery) (*types.ResponseQuery, error) {
 	ret := _m.Called(_a0, _a1)
 
 	var r0 *types.ResponseQuery
@@ -378,13 +715,29 @@ func (_m *Client) Query(_a0 context.Context, _a1 types.RequestQuery) (*types.Res
 	return r0, r1
 }
 
-// Start provides a mock function with given fields: _a0
-func (_m *Client) Start(_a0 context.Context) error {
-	ret := _m.Called(_a0)
+// Quit provides a mock function with given fields:
+func (_m *Client) Quit() <-chan struct{} {
+	ret := _m.Called()
+
+	var r0 <-chan struct{}
+	if rf, ok := ret.Get(0).(func() <-chan struct{}); ok {
+		r0 = rf()
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(<-chan struct{})
+		}
+	}
+
+	return r0
+}
+
+// Reset provides a mock function with given fields:
+func (_m *Client) Reset() error {
+	ret := _m.Called()
 
 	var r0 error
-	if rf, ok := ret.Get(0).(func(context.Context) error); ok {
-		r0 = rf(_a0)
+	if rf, ok := ret.Get(0).(func() error); ok {
+		r0 = rf()
 	} else {
 		r0 = ret.Error(0)
 	}
@@ -392,27 +745,56 @@ func (_m *Client) Start(_a0 context.Context) error {
 	return r0
 }
 
-// VerifyVoteExtension provides a mock function with given fields: _a0, _a1
-func (_m *Client) VerifyVoteExtension(_a0 context.Context, _a1 types.RequestVerifyVoteExtension) (*types.ResponseVerifyVoteExtension, error) {
-	ret := _m.Called(_a0, _a1)
+// SetLogger provides a mock function with given fields: _a0
+func (_m *Client) SetLogger(_a0 log.Logger) {
+	_m.Called(_a0)
+}
 
-	var r0 *types.ResponseVerifyVoteExtension
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestVerifyVoteExtension) *types.ResponseVerifyVoteExtension); ok {
-		r0 = rf(_a0, _a1)
+// SetResponseCallback provides a mock function with given fields: _a0
+func (_m *Client) SetResponseCallback(_a0 abcicli.Callback) {
+	_m.Called(_a0)
+}
+
+// Start provides a mock function with given fields:
+func (_m *Client) Start() error {
+	ret := _m.Called()
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func() error); ok {
+		r0 = rf()
 	} else {
-		if ret.Get(0) != nil {
-			r0 = ret.Get(0).(*types.ResponseVerifyVoteExtension)
-		}
+		r0 = ret.Error(0)
 	}
 
-	var r1 error
-	if rf, ok := ret.Get(1).(func(context.Context, types.RequestVerifyVoteExtension) error); ok {
-		r1 = rf(_a0, _a1)
+	return r0
+}
+
+// Stop provides a mock function with given fields:
+func (_m *Client) Stop() error {
+	ret := _m.Called()
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func() error); ok {
+		r0 = rf()
 	} else {
-		r1 = ret.Error(1)
+		r0 = ret.Error(0)
 	}
 
-	return r0, r1
+	return r0
+}
+
+// String provides a mock function with given fields:
+func (_m *Client) String() string {
+	ret := _m.Called()
+
+	var r0 string
+	if rf, ok := ret.Get(0).(func() string); ok {
+		r0 = rf()
+	} else {
+		r0 = ret.Get(0).(string)
+	}
+
+	return r0
 }
 
 // Wait provides a mock function with given fields:

abci/client/socket_client.go

@@ -1,4 +1,4 @@
-package abciclient
+package abcicli
 
 import (
 	"bufio"
@@ -8,11 +8,12 @@ import (
 	"fmt"
 	"io"
 	"net"
-	"sync"
+	"reflect"
 	"time"
 
 	"github.com/tendermint/tendermint/abci/types"
-	"github.com/tendermint/tendermint/libs/log"
+	tmsync "github.com/tendermint/tendermint/internal/libs/sync"
+	"github.com/tendermint/tendermint/internal/libs/timer"
 	tmnet "github.com/tendermint/tendermint/libs/net"
 	"github.com/tendermint/tendermint/libs/service"
 )
@@ -21,23 +22,31 @@ const (
 	// reqQueueSize is the max number of queued async requests.
 	// (memory: 256MB max assuming 1MB transactions)
 	reqQueueSize = 256
+	// Don't wait longer than...
+	flushThrottleMS = 20
 )
 
+type reqResWithContext struct {
+	R *ReqRes
+	C context.Context // if context.Err is not nil, reqRes will be thrown away (ignored)
+}
+
 // This is goroutine-safe, but users should beware that the application in
 // general is not meant to be interfaced with concurrent callers.
 type socketClient struct {
 	service.BaseService
-	logger log.Logger
 
 	addr        string
 	mustConnect bool
 	conn        net.Conn
 
-	reqQueue chan *requestAndResponse
+	reqQueue   chan *reqResWithContext
+	flushTimer *timer.ThrottleTimer
 
-	mtx     sync.Mutex
+	mtx     tmsync.RWMutex
 	err     error
-	reqSent *list.List // list of requests sent, waiting for response
+	reqSent *list.List                            // list of requests sent, waiting for response
+	resCb   func(*types.Request, *types.Response) // called on all requests, if set.
 }
 
 var _ Client = (*socketClient)(nil)
@@ -45,21 +54,23 @@ var _ Client = (*socketClient)(nil)
 // NewSocketClient creates a new socket client, which connects to a given
 // address. If mustConnect is true, the client will return an error upon start
 // if it fails to connect.
-func NewSocketClient(logger log.Logger, addr string, mustConnect bool) Client {
+func NewSocketClient(addr string, mustConnect bool) Client {
 	cli := &socketClient{
-		logger:      logger,
-		reqQueue:    make(chan *requestAndResponse, reqQueueSize),
+		reqQueue:    make(chan *reqResWithContext, reqQueueSize),
+		flushTimer:  timer.NewThrottleTimer("socketClient", flushThrottleMS),
 		mustConnect: mustConnect,
-		addr:        addr,
-		reqSent:     list.New(),
+
+		addr:    addr,
+		reqSent: list.New(),
+		resCb:   nil,
 	}
-	cli.BaseService = *service.NewBaseService(logger, "socketClient", cli)
+	cli.BaseService = *service.NewBaseService(nil, "socketClient", cli)
 	return cli
 }
 
 // OnStart implements Service by connecting to the server and spawning reading
 // and writing goroutines.
-func (cli *socketClient) OnStart(ctx context.Context) error {
+func (cli *socketClient) OnStart() error {
 	var (
 		err  error
 		conn net.Conn
@@ -71,15 +82,15 @@ func (cli *socketClient) OnStart(ctx context.Context) error {
 			if cli.mustConnect {
 				return err
 			}
-			cli.logger.Error(fmt.Sprintf("abci.socketClient failed to connect to %v.  Retrying after %vs...",
+			cli.Logger.Error(fmt.Sprintf("abci.socketClient failed to connect to %v.  Retrying after %vs...",
 				cli.addr, dialRetryIntervalSeconds), "err", err)
 			time.Sleep(time.Second * dialRetryIntervalSeconds)
 			continue
 		}
 		cli.conn = conn
 
-		go cli.sendRequestsRoutine(ctx, conn)
-		go cli.recvResponseRoutine(ctx, conn)
+		go cli.sendRequestsRoutine(conn)
+		go cli.recvResponseRoutine(conn)
 
 		return nil
 	}
@@ -91,67 +102,88 @@ func (cli *socketClient) OnStop() {
 		cli.conn.Close()
 	}
 
-	// this timeout is arbitrary.
-	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
-	defer cancel()
-	cli.drainQueue(ctx)
+	cli.flushQueue()
+	cli.flushTimer.Stop()
 }
 
 // Error returns an error if the client was stopped abruptly.
 func (cli *socketClient) Error() error {
+	cli.mtx.RLock()
+	defer cli.mtx.RUnlock()
+	return cli.err
+}
+
+// SetResponseCallback sets a callback, which will be executed for each
+// non-error & non-empty response from the server.
+//
+// NOTE: callback may get internally generated flush responses.
+func (cli *socketClient) SetResponseCallback(resCb Callback) {
 	cli.mtx.Lock()
 	defer cli.mtx.Unlock()
-	return cli.err
+	cli.resCb = resCb
 }
 
 //----------------------------------------
 
-func (cli *socketClient) sendRequestsRoutine(ctx context.Context, conn io.Writer) {
-	bw := bufio.NewWriter(conn)
+func (cli *socketClient) sendRequestsRoutine(conn io.Writer) {
+	w := bufio.NewWriter(conn)
 	for {
 		select {
-		case <-ctx.Done():
-			return
 		case reqres := <-cli.reqQueue:
-			if ctx.Err() != nil {
-				return
+			// cli.Logger.Debug("Sent request", "requestType", reflect.TypeOf(reqres.Request), "request", reqres.Request)
+
+			if reqres.C.Err() != nil {
+				cli.Logger.Debug("Request's context is done", "req", reqres.R, "err", reqres.C.Err())
+				continue
 			}
 
-			cli.willSendReq(reqres)
-
-			if err := types.WriteMessage(reqres.Request, bw); err != nil {
+			cli.willSendReq(reqres.R)
+			err := types.WriteMessage(reqres.R.Request, w)
+			if err != nil {
 				cli.stopForError(fmt.Errorf("write to buffer: %w", err))
 				return
 			}
 
-			if err := bw.Flush(); err != nil {
-				cli.stopForError(fmt.Errorf("flush buffer: %w", err))
-				return
+			// If it's a flush request, flush the current buffer.
+			if _, ok := reqres.R.Request.Value.(*types.Request_Flush); ok {
+				err = w.Flush()
+				if err != nil {
+					cli.stopForError(fmt.Errorf("flush buffer: %w", err))
+					return
+				}
 			}
+		case <-cli.flushTimer.Ch: // flush queue
+			select {
+			case cli.reqQueue <- &reqResWithContext{R: NewReqRes(types.ToRequestFlush()), C: context.Background()}:
+			default:
+				// Probably will fill the buffer, or retry later.
+			}
+		case <-cli.Quit():
+			return
 		}
 	}
 }
 
-func (cli *socketClient) recvResponseRoutine(ctx context.Context, conn io.Reader) {
+func (cli *socketClient) recvResponseRoutine(conn io.Reader) {
 	r := bufio.NewReader(conn)
 	for {
-		if ctx.Err() != nil {
-			return
-		}
-		res := &types.Response{}
-
-		if err := types.ReadMessage(r, res); err != nil {
+		var res = &types.Response{}
+		err := types.ReadMessage(r, res)
+		if err != nil {
 			cli.stopForError(fmt.Errorf("read message: %w", err))
 			return
 		}
 
+		// cli.Logger.Debug("Received response", "responseType", reflect.TypeOf(res), "response", res)
+
 		switch r := res.Value.(type) {
 		case *types.Response_Exception: // app responded with error
 			// XXX After setting cli.err, release waiters (e.g. reqres.Done())
 			cli.stopForError(errors.New(r.Exception.Error))
 			return
 		default:
-			if err := cli.didRecvResponse(res); err != nil {
+			err := cli.didRecvResponse(res)
+			if err != nil {
 				cli.stopForError(err)
 				return
 			}
@@ -159,7 +191,7 @@ func (cli *socketClient) recvResponseRoutine(ctx context.Context, conn io.Reader
 	}
 }
 
-func (cli *socketClient) willSendReq(reqres *requestAndResponse) {
+func (cli *socketClient) willSendReq(reqres *ReqRes) {
 	cli.mtx.Lock()
 	defer cli.mtx.Unlock()
 	cli.reqSent.PushBack(reqres)
@@ -172,199 +204,357 @@ func (cli *socketClient) didRecvResponse(res *types.Response) error {
 	// Get the first ReqRes.
 	next := cli.reqSent.Front()
 	if next == nil {
-		return fmt.Errorf("unexpected %T when nothing expected", res.Value)
+		return fmt.Errorf("unexpected %v when nothing expected", reflect.TypeOf(res.Value))
 	}
 
-	reqres := next.Value.(*requestAndResponse)
+	reqres := next.Value.(*ReqRes)
 	if !resMatchesReq(reqres.Request, res) {
-		return fmt.Errorf("unexpected %T when response to %T expected", res.Value, reqres.Request.Value)
+		return fmt.Errorf("unexpected %v when response to %v expected",
+			reflect.TypeOf(res.Value), reflect.TypeOf(reqres.Request.Value))
 	}
 
 	reqres.Response = res
-	reqres.markDone()        // release waiters
+	reqres.Done()            // release waiters
 	cli.reqSent.Remove(next) // pop first item from linked list
 
+	// Notify client listener if set (global callback).
+	if cli.resCb != nil {
+		cli.resCb(reqres.Request, res)
+	}
+
+	// Notify reqRes listener if set (request specific callback).
+	//
+	// NOTE: It is possible this callback isn't set on the reqres object. At this
+	// point, in which case it will be called after, when it is set.
+	reqres.InvokeCallback()
+
 	return nil
 }
 
 //----------------------------------------
 
-func (cli *socketClient) Flush(ctx context.Context) error {
-	_, err := cli.doRequest(ctx, types.ToRequestFlush())
+func (cli *socketClient) EchoAsync(ctx context.Context, msg string) (*ReqRes, error) {
+	return cli.queueRequestAsync(ctx, types.ToRequestEcho(msg))
+}
+
+func (cli *socketClient) FlushAsync(ctx context.Context) (*ReqRes, error) {
+	return cli.queueRequestAsync(ctx, types.ToRequestFlush())
+}
+
+func (cli *socketClient) InfoAsync(ctx context.Context, req types.RequestInfo) (*ReqRes, error) {
+	return cli.queueRequestAsync(ctx, types.ToRequestInfo(req))
+}
+
+func (cli *socketClient) DeliverTxAsync(ctx context.Context, req types.RequestDeliverTx) (*ReqRes, error) {
+	return cli.queueRequestAsync(ctx, types.ToRequestDeliverTx(req))
+}
+
+func (cli *socketClient) CheckTxAsync(ctx context.Context, req types.RequestCheckTx) (*ReqRes, error) {
+	return cli.queueRequestAsync(ctx, types.ToRequestCheckTx(req))
+}
+
+func (cli *socketClient) QueryAsync(ctx context.Context, req types.RequestQuery) (*ReqRes, error) {
+	return cli.queueRequestAsync(ctx, types.ToRequestQuery(req))
+}
+
+func (cli *socketClient) CommitAsync(ctx context.Context) (*ReqRes, error) {
+	return cli.queueRequestAsync(ctx, types.ToRequestCommit())
+}
+
+func (cli *socketClient) InitChainAsync(ctx context.Context, req types.RequestInitChain) (*ReqRes, error) {
+	return cli.queueRequestAsync(ctx, types.ToRequestInitChain(req))
+}
+
+func (cli *socketClient) BeginBlockAsync(ctx context.Context, req types.RequestBeginBlock) (*ReqRes, error) {
+	return cli.queueRequestAsync(ctx, types.ToRequestBeginBlock(req))
+}
+
+func (cli *socketClient) EndBlockAsync(ctx context.Context, req types.RequestEndBlock) (*ReqRes, error) {
+	return cli.queueRequestAsync(ctx, types.ToRequestEndBlock(req))
+}
+
+func (cli *socketClient) ListSnapshotsAsync(ctx context.Context, req types.RequestListSnapshots) (*ReqRes, error) {
+	return cli.queueRequestAsync(ctx, types.ToRequestListSnapshots(req))
+}
+
+func (cli *socketClient) OfferSnapshotAsync(ctx context.Context, req types.RequestOfferSnapshot) (*ReqRes, error) {
+	return cli.queueRequestAsync(ctx, types.ToRequestOfferSnapshot(req))
+}
+
+func (cli *socketClient) LoadSnapshotChunkAsync(
+	ctx context.Context,
+	req types.RequestLoadSnapshotChunk,
+) (*ReqRes, error) {
+	return cli.queueRequestAsync(ctx, types.ToRequestLoadSnapshotChunk(req))
+}
+
+func (cli *socketClient) ApplySnapshotChunkAsync(
+	ctx context.Context,
+	req types.RequestApplySnapshotChunk,
+) (*ReqRes, error) {
+	return cli.queueRequestAsync(ctx, types.ToRequestApplySnapshotChunk(req))
+}
+
+//----------------------------------------
+
+func (cli *socketClient) FlushSync(ctx context.Context) error {
+	reqRes, err := cli.queueRequest(ctx, types.ToRequestFlush(), true)
 	if err != nil {
+		return queueErr(err)
+	}
+
+	if err := cli.Error(); err != nil {
 		return err
 	}
-	return nil
+
+	gotResp := make(chan struct{})
+	go func() {
+		// NOTE: if we don't flush the queue, its possible to get stuck here
+		reqRes.Wait()
+		close(gotResp)
+	}()
+
+	select {
+	case <-gotResp:
+		return cli.Error()
+	case <-ctx.Done():
+		return ctx.Err()
+	}
 }
 
-func (cli *socketClient) Echo(ctx context.Context, msg string) (*types.ResponseEcho, error) {
-	res, err := cli.doRequest(ctx, types.ToRequestEcho(msg))
+func (cli *socketClient) EchoSync(ctx context.Context, msg string) (*types.ResponseEcho, error) {
+	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestEcho(msg))
 	if err != nil {
 		return nil, err
 	}
-	return res.GetEcho(), nil
+	return reqres.Response.GetEcho(), nil
 }
 
-func (cli *socketClient) Info(ctx context.Context, req types.RequestInfo) (*types.ResponseInfo, error) {
-	res, err := cli.doRequest(ctx, types.ToRequestInfo(req))
+func (cli *socketClient) InfoSync(
+	ctx context.Context,
+	req types.RequestInfo,
+) (*types.ResponseInfo, error) {
+	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestInfo(req))
 	if err != nil {
 		return nil, err
 	}
-	return res.GetInfo(), nil
+	return reqres.Response.GetInfo(), nil
 }
 
-func (cli *socketClient) CheckTx(ctx context.Context, req types.RequestCheckTx) (*types.ResponseCheckTx, error) {
-	res, err := cli.doRequest(ctx, types.ToRequestCheckTx(req))
+func (cli *socketClient) DeliverTxSync(
+	ctx context.Context,
+	req types.RequestDeliverTx,
+) (*types.ResponseDeliverTx, error) {
+
+	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestDeliverTx(req))
 	if err != nil {
 		return nil, err
 	}
-	return res.GetCheckTx(), nil
+	return reqres.Response.GetDeliverTx(), nil
 }
 
-func (cli *socketClient) Query(ctx context.Context, req types.RequestQuery) (*types.ResponseQuery, error) {
-	res, err := cli.doRequest(ctx, types.ToRequestQuery(req))
+func (cli *socketClient) CheckTxSync(
+	ctx context.Context,
+	req types.RequestCheckTx,
+) (*types.ResponseCheckTx, error) {
+	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestCheckTx(req))
 	if err != nil {
 		return nil, err
 	}
-	return res.GetQuery(), nil
+	return reqres.Response.GetCheckTx(), nil
 }
 
-func (cli *socketClient) Commit(ctx context.Context) (*types.ResponseCommit, error) {
-	res, err := cli.doRequest(ctx, types.ToRequestCommit())
+func (cli *socketClient) QuerySync(
+	ctx context.Context,
+	req types.RequestQuery,
+) (*types.ResponseQuery, error) {
+	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestQuery(req))
 	if err != nil {
 		return nil, err
 	}
-	return res.GetCommit(), nil
+	return reqres.Response.GetQuery(), nil
 }
 
-func (cli *socketClient) InitChain(ctx context.Context, req types.RequestInitChain) (*types.ResponseInitChain, error) {
-	res, err := cli.doRequest(ctx, types.ToRequestInitChain(req))
+func (cli *socketClient) CommitSync(ctx context.Context) (*types.ResponseCommit, error) {
+	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestCommit())
 	if err != nil {
 		return nil, err
 	}
-	return res.GetInitChain(), nil
+	return reqres.Response.GetCommit(), nil
 }
 
-func (cli *socketClient) ListSnapshots(ctx context.Context, req types.RequestListSnapshots) (*types.ResponseListSnapshots, error) {
-	res, err := cli.doRequest(ctx, types.ToRequestListSnapshots(req))
+func (cli *socketClient) InitChainSync(
+	ctx context.Context,
+	req types.RequestInitChain,
+) (*types.ResponseInitChain, error) {
+
+	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestInitChain(req))
 	if err != nil {
 		return nil, err
 	}
-	return res.GetListSnapshots(), nil
+	return reqres.Response.GetInitChain(), nil
 }
 
-func (cli *socketClient) OfferSnapshot(ctx context.Context, req types.RequestOfferSnapshot) (*types.ResponseOfferSnapshot, error) {
-	res, err := cli.doRequest(ctx, types.ToRequestOfferSnapshot(req))
+func (cli *socketClient) BeginBlockSync(
+	ctx context.Context,
+	req types.RequestBeginBlock,
+) (*types.ResponseBeginBlock, error) {
+
+	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestBeginBlock(req))
 	if err != nil {
 		return nil, err
 	}
-	return res.GetOfferSnapshot(), nil
+	return reqres.Response.GetBeginBlock(), nil
 }
 
-func (cli *socketClient) LoadSnapshotChunk(ctx context.Context, req types.RequestLoadSnapshotChunk) (*types.ResponseLoadSnapshotChunk, error) {
-	res, err := cli.doRequest(ctx, types.ToRequestLoadSnapshotChunk(req))
+func (cli *socketClient) EndBlockSync(
+	ctx context.Context,
+	req types.RequestEndBlock,
+) (*types.ResponseEndBlock, error) {
+
+	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestEndBlock(req))
 	if err != nil {
 		return nil, err
 	}
-	return res.GetLoadSnapshotChunk(), nil
+	return reqres.Response.GetEndBlock(), nil
 }
 
-func (cli *socketClient) ApplySnapshotChunk(ctx context.Context, req types.RequestApplySnapshotChunk) (*types.ResponseApplySnapshotChunk, error) {
-	res, err := cli.doRequest(ctx, types.ToRequestApplySnapshotChunk(req))
+func (cli *socketClient) ListSnapshotsSync(
+	ctx context.Context,
+	req types.RequestListSnapshots,
+) (*types.ResponseListSnapshots, error) {
+
+	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestListSnapshots(req))
 	if err != nil {
 		return nil, err
 	}
-	return res.GetApplySnapshotChunk(), nil
+	return reqres.Response.GetListSnapshots(), nil
 }
 
-func (cli *socketClient) PrepareProposal(ctx context.Context, req types.RequestPrepareProposal) (*types.ResponsePrepareProposal, error) {
-	res, err := cli.doRequest(ctx, types.ToRequestPrepareProposal(req))
+func (cli *socketClient) OfferSnapshotSync(
+	ctx context.Context,
+	req types.RequestOfferSnapshot,
+) (*types.ResponseOfferSnapshot, error) {
+
+	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestOfferSnapshot(req))
 	if err != nil {
 		return nil, err
 	}
-	return res.GetPrepareProposal(), nil
+	return reqres.Response.GetOfferSnapshot(), nil
 }
 
-func (cli *socketClient) ProcessProposal(ctx context.Context, req types.RequestProcessProposal) (*types.ResponseProcessProposal, error) {
-	res, err := cli.doRequest(ctx, types.ToRequestProcessProposal(req))
+func (cli *socketClient) LoadSnapshotChunkSync(
+	ctx context.Context,
+	req types.RequestLoadSnapshotChunk) (*types.ResponseLoadSnapshotChunk, error) {
+
+	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestLoadSnapshotChunk(req))
 	if err != nil {
 		return nil, err
 	}
-	return res.GetProcessProposal(), nil
+	return reqres.Response.GetLoadSnapshotChunk(), nil
 }
 
-func (cli *socketClient) ExtendVote(ctx context.Context, req types.RequestExtendVote) (*types.ResponseExtendVote, error) {
-	res, err := cli.doRequest(ctx, types.ToRequestExtendVote(req))
+func (cli *socketClient) ApplySnapshotChunkSync(
+	ctx context.Context,
+	req types.RequestApplySnapshotChunk) (*types.ResponseApplySnapshotChunk, error) {
+
+	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestApplySnapshotChunk(req))
 	if err != nil {
 		return nil, err
 	}
-	return res.GetExtendVote(), nil
-}
-
-func (cli *socketClient) VerifyVoteExtension(ctx context.Context, req types.RequestVerifyVoteExtension) (*types.ResponseVerifyVoteExtension, error) {
-	res, err := cli.doRequest(ctx, types.ToRequestVerifyVoteExtension(req))
-	if err != nil {
-		return nil, err
-	}
-	return res.GetVerifyVoteExtension(), nil
-}
-
-func (cli *socketClient) FinalizeBlock(ctx context.Context, req types.RequestFinalizeBlock) (*types.ResponseFinalizeBlock, error) {
-	res, err := cli.doRequest(ctx, types.ToRequestFinalizeBlock(req))
-	if err != nil {
-		return nil, err
-	}
-	return res.GetFinalizeBlock(), nil
+	return reqres.Response.GetApplySnapshotChunk(), nil
 }
 
 //----------------------------------------
 
-func (cli *socketClient) doRequest(ctx context.Context, req *types.Request) (*types.Response, error) {
-	reqres := makeReqRes(req)
+// queueRequest enqueues req onto the queue. If the queue is full, it ether
+// returns an error (sync=false) or blocks (sync=true).
+//
+// When sync=true, ctx can be used to break early. When sync=false, ctx will be
+// used later to determine if request should be dropped (if ctx.Err is
+// non-nil).
+//
+// The caller is responsible for checking cli.Error.
+func (cli *socketClient) queueRequest(ctx context.Context, req *types.Request, sync bool) (*ReqRes, error) {
+	reqres := NewReqRes(req)
 
-	select {
-	case cli.reqQueue <- reqres:
-	case <-ctx.Done():
-		return nil, fmt.Errorf("can't queue req: %w", ctx.Err())
-	}
-
-	select {
-	case <-reqres.signal:
-		if err := cli.Error(); err != nil {
-			return nil, err
+	if sync {
+		select {
+		case cli.reqQueue <- &reqResWithContext{R: reqres, C: context.Background()}:
+		case <-ctx.Done():
+			return nil, ctx.Err()
+		}
+	} else {
+		select {
+		case cli.reqQueue <- &reqResWithContext{R: reqres, C: ctx}:
+		default:
+			return nil, errors.New("buffer is full")
 		}
-
-		return reqres.Response, nil
-	case <-ctx.Done():
-		return nil, ctx.Err()
 	}
+
+	// Maybe auto-flush, or unset auto-flush
+	switch req.Value.(type) {
+	case *types.Request_Flush:
+		cli.flushTimer.Unset()
+	default:
+		cli.flushTimer.Set()
+	}
+
+	return reqres, nil
 }
 
-// drainQueue marks as complete and discards all remaining pending requests
-// from the queue.
-func (cli *socketClient) drainQueue(ctx context.Context) {
+func (cli *socketClient) queueRequestAsync(
+	ctx context.Context,
+	req *types.Request,
+) (*ReqRes, error) {
+
+	reqres, err := cli.queueRequest(ctx, req, false)
+	if err != nil {
+		return nil, queueErr(err)
+	}
+
+	return reqres, cli.Error()
+}
+
+func (cli *socketClient) queueRequestAndFlushSync(
+	ctx context.Context,
+	req *types.Request,
+) (*ReqRes, error) {
+
+	reqres, err := cli.queueRequest(ctx, req, true)
+	if err != nil {
+		return nil, queueErr(err)
+	}
+
+	if err := cli.FlushSync(ctx); err != nil {
+		return nil, err
+	}
+
+	return reqres, cli.Error()
+}
+
+func queueErr(e error) error {
+	return fmt.Errorf("can't queue req: %w", e)
+}
+
+func (cli *socketClient) flushQueue() {
 	cli.mtx.Lock()
 	defer cli.mtx.Unlock()
 
 	// mark all in-flight messages as resolved (they will get cli.Error())
 	for req := cli.reqSent.Front(); req != nil; req = req.Next() {
-		reqres := req.Value.(*requestAndResponse)
-		reqres.markDone()
+		reqres := req.Value.(*ReqRes)
+		reqres.Done()
 	}
 
-	// Mark all queued messages as resolved.
-	//
-	// TODO(creachadair): We can't simply range the channel, because it is never
-	// closed, and the writer continues to add work.
-	// See https://github.com/tendermint/tendermint/issues/6996.
+	// mark all queued messages as resolved
+LOOP:
 	for {
 		select {
-		case <-ctx.Done():
-			return
 		case reqres := <-cli.reqQueue:
-			reqres.markDone()
+			reqres.R.Done()
 		default:
-			return
+			break LOOP
 		}
 	}
 }
@@ -379,6 +569,8 @@ func resMatchesReq(req *types.Request, res *types.Response) (ok bool) {
 		_, ok = res.Value.(*types.Response_Flush)
 	case *types.Request_Info:
 		_, ok = res.Value.(*types.Response_Info)
+	case *types.Request_DeliverTx:
+		_, ok = res.Value.(*types.Response_DeliverTx)
 	case *types.Request_CheckTx:
 		_, ok = res.Value.(*types.Response_CheckTx)
 	case *types.Request_Commit:
@@ -387,14 +579,10 @@ func resMatchesReq(req *types.Request, res *types.Response) (ok bool) {
 		_, ok = res.Value.(*types.Response_Query)
 	case *types.Request_InitChain:
 		_, ok = res.Value.(*types.Response_InitChain)
-	case *types.Request_ProcessProposal:
-		_, ok = res.Value.(*types.Response_ProcessProposal)
-	case *types.Request_PrepareProposal:
-		_, ok = res.Value.(*types.Response_PrepareProposal)
-	case *types.Request_ExtendVote:
-		_, ok = res.Value.(*types.Response_ExtendVote)
-	case *types.Request_VerifyVoteExtension:
-		_, ok = res.Value.(*types.Response_VerifyVoteExtension)
+	case *types.Request_BeginBlock:
+		_, ok = res.Value.(*types.Response_BeginBlock)
+	case *types.Request_EndBlock:
+		_, ok = res.Value.(*types.Response_EndBlock)
 	case *types.Request_ApplySnapshotChunk:
 		_, ok = res.Value.(*types.Response_ApplySnapshotChunk)
 	case *types.Request_LoadSnapshotChunk:
@@ -403,8 +591,6 @@ func resMatchesReq(req *types.Request, res *types.Response) (ok bool) {
 		_, ok = res.Value.(*types.Response_ListSnapshots)
 	case *types.Request_OfferSnapshot:
 		_, ok = res.Value.(*types.Response_OfferSnapshot)
-	case *types.Request_FinalizeBlock:
-		_, ok = res.Value.(*types.Response_FinalizeBlock)
 	}
 	return ok
 }
@@ -418,6 +604,8 @@ func (cli *socketClient) stopForError(err error) {
 	cli.err = err
 	cli.mtx.Unlock()
 
-	cli.logger.Info("Stopping abci.socketClient", "reason", err)
-	cli.Stop()
+	cli.Logger.Info("Stopping abci.socketClient", "reason", err)
+	if err := cli.Stop(); err != nil {
+		cli.Logger.Error("Error stopping abci.socketClient", "err", err)
+	}
 }

abci/client/socket_client_test.go

@@ -1,4 +1,4 @@
-package abciclient_test
+package abcicli_test
 
 import (
 	"context"
@@ -11,32 +11,39 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
-	abciclient "github.com/tendermint/tendermint/abci/client"
+	abcicli "github.com/tendermint/tendermint/abci/client"
 	"github.com/tendermint/tendermint/abci/server"
 	"github.com/tendermint/tendermint/abci/types"
-	"github.com/tendermint/tendermint/libs/log"
 	"github.com/tendermint/tendermint/libs/service"
 )
 
+var ctx = context.Background()
+
 func TestProperSyncCalls(t *testing.T) {
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-
 	app := slowApp{}
-	logger := log.NewNopLogger()
 
-	_, c := setupClientServer(ctx, t, logger, app)
+	s, c := setupClientServer(t, app)
+	t.Cleanup(func() {
+		if err := s.Stop(); err != nil {
+			t.Error(err)
+		}
+	})
+	t.Cleanup(func() {
+		if err := c.Stop(); err != nil {
+			t.Error(err)
+		}
+	})
 
 	resp := make(chan error, 1)
 	go func() {
-		rsp, err := c.FinalizeBlock(ctx, types.RequestFinalizeBlock{})
+		// This is BeginBlockSync unrolled....
+		reqres, err := c.BeginBlockAsync(ctx, types.RequestBeginBlock{})
 		assert.NoError(t, err)
-		assert.NoError(t, c.Flush(ctx))
-		assert.NotNil(t, rsp)
-		select {
-		case <-ctx.Done():
-		case resp <- c.Error():
-		}
+		err = c.FlushSync(context.Background())
+		assert.NoError(t, err)
+		res := reqres.Response.GetBeginBlock()
+		assert.NotNil(t, res)
+		resp <- c.Error()
 	}()
 
 	select {
@@ -48,29 +55,64 @@ func TestProperSyncCalls(t *testing.T) {
 	}
 }
 
-func setupClientServer(
-	ctx context.Context,
-	t *testing.T,
-	logger log.Logger,
-	app types.Application,
-) (service.Service, abciclient.Client) {
-	t.Helper()
+func TestHangingSyncCalls(t *testing.T) {
+	app := slowApp{}
 
+	s, c := setupClientServer(t, app)
+	t.Cleanup(func() {
+		if err := s.Stop(); err != nil {
+			t.Log(err)
+		}
+	})
+	t.Cleanup(func() {
+		if err := c.Stop(); err != nil {
+			t.Log(err)
+		}
+	})
+
+	resp := make(chan error, 1)
+	go func() {
+		// Start BeginBlock and flush it
+		reqres, err := c.BeginBlockAsync(ctx, types.RequestBeginBlock{})
+		assert.NoError(t, err)
+		flush, err := c.FlushAsync(ctx)
+		assert.NoError(t, err)
+		// wait 20 ms for all events to travel socket, but
+		// no response yet from server
+		time.Sleep(20 * time.Millisecond)
+		// kill the server, so the connections break
+		err = s.Stop()
+		assert.NoError(t, err)
+
+		// wait for the response from BeginBlock
+		reqres.Wait()
+		flush.Wait()
+		resp <- c.Error()
+	}()
+
+	select {
+	case <-time.After(time.Second):
+		require.Fail(t, "No response arrived")
+	case err, ok := <-resp:
+		require.True(t, ok, "Must not close channel")
+		assert.Error(t, err, "We should get EOF error")
+	}
+}
+
+func setupClientServer(t *testing.T, app types.Application) (
+	service.Service, abcicli.Client) {
 	// some port between 20k and 30k
 	port := 20000 + rand.Int31()%10000
 	addr := fmt.Sprintf("localhost:%d", port)
 
-	s, err := server.NewServer(logger, addr, "socket", app)
+	s, err := server.NewServer(addr, "socket", app)
+	require.NoError(t, err)
+	err = s.Start()
 	require.NoError(t, err)
-	require.NoError(t, s.Start(ctx))
-	t.Cleanup(s.Wait)
 
-	c := abciclient.NewSocketClient(logger, addr, true)
-	require.NoError(t, c.Start(ctx))
-	t.Cleanup(c.Wait)
-
-	require.True(t, s.IsRunning())
-	require.True(t, c.IsRunning())
+	c := abcicli.NewSocketClient(addr, true)
+	err = c.Start()
+	require.NoError(t, err)
 
 	return s, c
 }
@@ -79,7 +121,7 @@ type slowApp struct {
 	types.BaseApplication
 }
 
-func (slowApp) FinalizeBlock(req types.RequestFinalizeBlock) types.ResponseFinalizeBlock {
+func (slowApp) BeginBlock(req types.RequestBeginBlock) types.ResponseBeginBlock {
 	time.Sleep(200 * time.Millisecond)
-	return types.ResponseFinalizeBlock{}
+	return types.ResponseBeginBlock{}
 }

abci/cmd/abci-cli/abci-cli.go

@@ -2,32 +2,35 @@ package main
 
 import (
 	"bufio"
+	"context"
 	"encoding/hex"
 	"errors"
 	"fmt"
 	"io"
 	"os"
-	"os/signal"
 	"strings"
-	"syscall"
 
 	"github.com/spf13/cobra"
 
 	"github.com/tendermint/tendermint/libs/log"
-	"github.com/tendermint/tendermint/version"
+	tmos "github.com/tendermint/tendermint/libs/os"
 
-	abciclient "github.com/tendermint/tendermint/abci/client"
+	abcicli "github.com/tendermint/tendermint/abci/client"
 	"github.com/tendermint/tendermint/abci/example/code"
 	"github.com/tendermint/tendermint/abci/example/kvstore"
 	"github.com/tendermint/tendermint/abci/server"
 	servertest "github.com/tendermint/tendermint/abci/tests/server"
 	"github.com/tendermint/tendermint/abci/types"
+	"github.com/tendermint/tendermint/abci/version"
 	"github.com/tendermint/tendermint/proto/tendermint/crypto"
 )
 
 // client is a global variable so it can be reused by the console
 var (
-	client abciclient.Client
+	client abcicli.Client
+	logger log.Logger
+
+	ctx = context.Background()
 )
 
 // flags
@@ -47,32 +50,34 @@ var (
 	flagPersist string
 )
 
-func RootCmmand(logger log.Logger) *cobra.Command {
-	return &cobra.Command{
-		Use:   "abci-cli",
-		Short: "the ABCI CLI tool wraps an ABCI client",
-		Long:  "the ABCI CLI tool wraps an ABCI client and is used for testing ABCI servers",
-		PersistentPreRunE: func(cmd *cobra.Command, args []string) (err error) {
+var RootCmd = &cobra.Command{
+	Use:   "abci-cli",
+	Short: "the ABCI CLI tool wraps an ABCI client",
+	Long:  "the ABCI CLI tool wraps an ABCI client and is used for testing ABCI servers",
+	PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
 
-			switch cmd.Use {
-			case "kvstore", "version":
-				return nil
-			}
-
-			if client == nil {
-				var err error
-				client, err = abciclient.NewClient(logger.With("module", "abci-client"), flagAddress, flagAbci, false)
-				if err != nil {
-					return err
-				}
-
-				if err := client.Start(cmd.Context()); err != nil {
-					return err
-				}
-			}
+		switch cmd.Use {
+		case "kvstore", "version":
 			return nil
-		},
-	}
+		}
+
+		if logger == nil {
+			logger = log.MustNewDefaultLogger(log.LogFormatPlain, log.LogLevelInfo, false)
+		}
+
+		if client == nil {
+			var err error
+			client, err = abcicli.NewClient(flagAddress, flagAbci, false)
+			if err != nil {
+				return err
+			}
+			client.SetLogger(logger.With("module", "abci-client"))
+			if err := client.Start(); err != nil {
+				return err
+			}
+		}
+		return nil
+	},
 }
 
 // Structure for data passed to print response.
@@ -94,46 +99,56 @@ type queryResponse struct {
 }
 
 func Execute() error {
-	logger, err := log.NewDefaultLogger(log.LogFormatPlain, log.LogLevelInfo)
-	if err != nil {
-		return err
-	}
-
-	cmd := RootCmmand(logger)
-	addGlobalFlags(cmd)
-	addCommands(cmd, logger)
-	return cmd.Execute()
+	addGlobalFlags()
+	addCommands()
+	return RootCmd.Execute()
 }
 
-func addGlobalFlags(cmd *cobra.Command) {
-	cmd.PersistentFlags().StringVarP(&flagAddress,
+func addGlobalFlags() {
+	RootCmd.PersistentFlags().StringVarP(&flagAddress,
 		"address",
 		"",
 		"tcp://0.0.0.0:26658",
 		"address of application socket")
-	cmd.PersistentFlags().StringVarP(&flagAbci, "abci", "", "socket", "either socket or grpc")
-	cmd.PersistentFlags().BoolVarP(&flagVerbose,
+	RootCmd.PersistentFlags().StringVarP(&flagAbci, "abci", "", "socket", "either socket or grpc")
+	RootCmd.PersistentFlags().BoolVarP(&flagVerbose,
 		"verbose",
 		"v",
 		false,
 		"print the command and results as if it were a console session")
-	cmd.PersistentFlags().StringVarP(&flagLogLevel, "log_level", "", "debug", "set the logger level")
+	RootCmd.PersistentFlags().StringVarP(&flagLogLevel, "log_level", "", "debug", "set the logger level")
 }
 
-func addCommands(cmd *cobra.Command, logger log.Logger) {
-	cmd.AddCommand(batchCmd)
-	cmd.AddCommand(consoleCmd)
-	cmd.AddCommand(echoCmd)
-	cmd.AddCommand(infoCmd)
-	cmd.AddCommand(deliverTxCmd)
-	cmd.AddCommand(checkTxCmd)
-	cmd.AddCommand(commitCmd)
-	cmd.AddCommand(versionCmd)
-	cmd.AddCommand(testCmd)
-	cmd.AddCommand(getQueryCmd())
+func addQueryFlags() {
+	queryCmd.PersistentFlags().StringVarP(&flagPath, "path", "", "/store", "path to prefix query with")
+	queryCmd.PersistentFlags().IntVarP(&flagHeight, "height", "", 0, "height to query the blockchain at")
+	queryCmd.PersistentFlags().BoolVarP(&flagProve,
+		"prove",
+		"",
+		false,
+		"whether or not to return a merkle proof of the query result")
+}
+
+func addKVStoreFlags() {
+	kvstoreCmd.PersistentFlags().StringVarP(&flagPersist, "persist", "", "", "directory to use for a database")
+}
+
+func addCommands() {
+	RootCmd.AddCommand(batchCmd)
+	RootCmd.AddCommand(consoleCmd)
+	RootCmd.AddCommand(echoCmd)
+	RootCmd.AddCommand(infoCmd)
+	RootCmd.AddCommand(deliverTxCmd)
+	RootCmd.AddCommand(checkTxCmd)
+	RootCmd.AddCommand(commitCmd)
+	RootCmd.AddCommand(versionCmd)
+	RootCmd.AddCommand(testCmd)
+	addQueryFlags()
+	RootCmd.AddCommand(queryCmd)
 
 	// examples
-	cmd.AddCommand(getKVStoreCmd(logger))
+	addKVStoreFlags()
+	RootCmd.AddCommand(kvstoreCmd)
 }
 
 var batchCmd = &cobra.Command{
@@ -193,7 +208,7 @@ var deliverTxCmd = &cobra.Command{
 	Short: "deliver a new transaction to the application",
 	Long:  "deliver a new transaction to the application",
 	Args:  cobra.ExactArgs(1),
-	RunE:  cmdFinalizeBlock,
+	RunE:  cmdDeliverTx,
 }
 
 var checkTxCmd = &cobra.Command{
@@ -218,43 +233,25 @@ var versionCmd = &cobra.Command{
 	Long:  "print ABCI console version",
 	Args:  cobra.ExactArgs(0),
 	RunE: func(cmd *cobra.Command, args []string) error {
-		fmt.Println(version.ABCIVersion)
+		fmt.Println(version.Version)
 		return nil
 	},
 }
 
-func getQueryCmd() *cobra.Command {
-	cmd := &cobra.Command{
-		Use:   "query",
-		Short: "query the application state",
-		Long:  "query the application state",
-		Args:  cobra.ExactArgs(1),
-		RunE:  cmdQuery,
-	}
-
-	cmd.PersistentFlags().StringVarP(&flagPath, "path", "", "/store", "path to prefix query with")
-	cmd.PersistentFlags().IntVarP(&flagHeight, "height", "", 0, "height to query the blockchain at")
-	cmd.PersistentFlags().BoolVarP(&flagProve,
-		"prove",
-		"",
-		false,
-		"whether or not to return a merkle proof of the query result")
-
-	return cmd
+var queryCmd = &cobra.Command{
+	Use:   "query",
+	Short: "query the application state",
+	Long:  "query the application state",
+	Args:  cobra.ExactArgs(1),
+	RunE:  cmdQuery,
 }
 
-func getKVStoreCmd(logger log.Logger) *cobra.Command {
-	cmd := &cobra.Command{
-		Use:   "kvstore",
-		Short: "ABCI demo example",
-		Long:  "ABCI demo example",
-		Args:  cobra.ExactArgs(0),
-		RunE:  makeKVStoreCmd(logger),
-	}
-
-	cmd.PersistentFlags().StringVarP(&flagPersist, "persist", "", "", "directory to use for a database")
-	return cmd
-
+var kvstoreCmd = &cobra.Command{
+	Use:   "kvstore",
+	Short: "ABCI demo example",
+	Long:  "ABCI demo example",
+	Args:  cobra.ExactArgs(0),
+	RunE:  cmdKVStore,
 }
 
 var testCmd = &cobra.Command{
@@ -295,45 +292,23 @@ func compose(fs []func() error) error {
 }
 
 func cmdTest(cmd *cobra.Command, args []string) error {
-	ctx := cmd.Context()
 	return compose(
 		[]func() error{
-			func() error { return servertest.InitChain(ctx, client) },
-			func() error { return servertest.Commit(ctx, client, nil) },
+			func() error { return servertest.InitChain(client) },
+			func() error { return servertest.Commit(client, nil) },
+			func() error { return servertest.DeliverTx(client, []byte("abc"), code.CodeTypeBadNonce, nil) },
+			func() error { return servertest.Commit(client, nil) },
+			func() error { return servertest.DeliverTx(client, []byte{0x00}, code.CodeTypeOK, nil) },
+			func() error { return servertest.Commit(client, []byte{0, 0, 0, 0, 0, 0, 0, 1}) },
+			func() error { return servertest.DeliverTx(client, []byte{0x00}, code.CodeTypeBadNonce, nil) },
+			func() error { return servertest.DeliverTx(client, []byte{0x01}, code.CodeTypeOK, nil) },
+			func() error { return servertest.DeliverTx(client, []byte{0x00, 0x02}, code.CodeTypeOK, nil) },
+			func() error { return servertest.DeliverTx(client, []byte{0x00, 0x03}, code.CodeTypeOK, nil) },
+			func() error { return servertest.DeliverTx(client, []byte{0x00, 0x00, 0x04}, code.CodeTypeOK, nil) },
 			func() error {
-				return servertest.FinalizeBlock(ctx, client, [][]byte{
-					[]byte("abc"),
-				}, []uint32{
-					code.CodeTypeBadNonce,
-				}, nil)
+				return servertest.DeliverTx(client, []byte{0x00, 0x00, 0x06}, code.CodeTypeBadNonce, nil)
 			},
-			func() error { return servertest.Commit(ctx, client, nil) },
-			func() error {
-				return servertest.FinalizeBlock(ctx, client, [][]byte{
-					{0x00},
-				}, []uint32{
-					code.CodeTypeOK,
-				}, nil)
-			},
-			func() error { return servertest.Commit(ctx, client, []byte{0, 0, 0, 0, 0, 0, 0, 1}) },
-			func() error {
-				return servertest.FinalizeBlock(ctx, client, [][]byte{
-					{0x00},
-					{0x01},
-					{0x00, 0x02},
-					{0x00, 0x03},
-					{0x00, 0x00, 0x04},
-					{0x00, 0x00, 0x06},
-				}, []uint32{
-					code.CodeTypeBadNonce,
-					code.CodeTypeOK,
-					code.CodeTypeOK,
-					code.CodeTypeOK,
-					code.CodeTypeOK,
-					code.CodeTypeBadNonce,
-				}, nil)
-			},
-			func() error { return servertest.Commit(ctx, client, []byte{0, 0, 0, 0, 0, 0, 0, 5}) },
+			func() error { return servertest.Commit(client, []byte{0, 0, 0, 0, 0, 0, 0, 5}) },
 		})
 }
 
@@ -427,7 +402,7 @@ func muxOnCommands(cmd *cobra.Command, pArgs []string) error {
 	case "commit":
 		return cmdCommit(cmd, actualArgs)
 	case "deliver_tx":
-		return cmdFinalizeBlock(cmd, actualArgs)
+		return cmdDeliverTx(cmd, actualArgs)
 	case "echo":
 		return cmdEcho(cmd, actualArgs)
 	case "info":
@@ -451,9 +426,12 @@ func cmdUnimplemented(cmd *cobra.Command, args []string) error {
 	})
 
 	fmt.Println("Available commands:")
-	for _, cmd := range cmd.Commands() {
-		fmt.Printf("%s: %s\n", cmd.Use, cmd.Short)
-	}
+	fmt.Printf("%s: %s\n", echoCmd.Use, echoCmd.Short)
+	fmt.Printf("%s: %s\n", infoCmd.Use, infoCmd.Short)
+	fmt.Printf("%s: %s\n", checkTxCmd.Use, checkTxCmd.Short)
+	fmt.Printf("%s: %s\n", deliverTxCmd.Use, deliverTxCmd.Short)
+	fmt.Printf("%s: %s\n", queryCmd.Use, queryCmd.Short)
+	fmt.Printf("%s: %s\n", commitCmd.Use, commitCmd.Short)
 	fmt.Println("Use \"[command] --help\" for more information about a command.")
 
 	return nil
@@ -465,15 +443,13 @@ func cmdEcho(cmd *cobra.Command, args []string) error {
 	if len(args) > 0 {
 		msg = args[0]
 	}
-	res, err := client.Echo(cmd.Context(), msg)
+	res, err := client.EchoSync(ctx, msg)
 	if err != nil {
 		return err
 	}
-
 	printResponse(cmd, args, response{
 		Data: []byte(res.Message),
 	})
-
 	return nil
 }
 
@@ -483,7 +459,7 @@ func cmdInfo(cmd *cobra.Command, args []string) error {
 	if len(args) == 1 {
 		version = args[0]
 	}
-	res, err := client.Info(cmd.Context(), types.RequestInfo{Version: version})
+	res, err := client.InfoSync(ctx, types.RequestInfo{Version: version})
 	if err != nil {
 		return err
 	}
@@ -496,7 +472,7 @@ func cmdInfo(cmd *cobra.Command, args []string) error {
 const codeBad uint32 = 10
 
 // Append a new tx to application
-func cmdFinalizeBlock(cmd *cobra.Command, args []string) error {
+func cmdDeliverTx(cmd *cobra.Command, args []string) error {
 	if len(args) == 0 {
 		printResponse(cmd, args, response{
 			Code: codeBad,
@@ -508,18 +484,16 @@ func cmdFinalizeBlock(cmd *cobra.Command, args []string) error {
 	if err != nil {
 		return err
 	}
-	res, err := client.FinalizeBlock(cmd.Context(), types.RequestFinalizeBlock{Txs: [][]byte{txBytes}})
+	res, err := client.DeliverTxSync(ctx, types.RequestDeliverTx{Tx: txBytes})
 	if err != nil {
 		return err
 	}
-	for _, tx := range res.Txs {
-		printResponse(cmd, args, response{
-			Code: tx.Code,
-			Data: tx.Data,
-			Info: tx.Info,
-			Log:  tx.Log,
-		})
-	}
+	printResponse(cmd, args, response{
+		Code: res.Code,
+		Data: res.Data,
+		Info: res.Info,
+		Log:  res.Log,
+	})
 	return nil
 }
 
@@ -536,7 +510,7 @@ func cmdCheckTx(cmd *cobra.Command, args []string) error {
 	if err != nil {
 		return err
 	}
-	res, err := client.CheckTx(cmd.Context(), types.RequestCheckTx{Tx: txBytes})
+	res, err := client.CheckTxSync(ctx, types.RequestCheckTx{Tx: txBytes})
 	if err != nil {
 		return err
 	}
@@ -551,7 +525,7 @@ func cmdCheckTx(cmd *cobra.Command, args []string) error {
 
 // Get application Merkle root hash
 func cmdCommit(cmd *cobra.Command, args []string) error {
-	res, err := client.Commit(cmd.Context())
+	res, err := client.CommitSync(ctx)
 	if err != nil {
 		return err
 	}
@@ -576,7 +550,7 @@ func cmdQuery(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	resQuery, err := client.Query(cmd.Context(), types.RequestQuery{
+	resQuery, err := client.QuerySync(ctx, types.RequestQuery{
 		Data:   queryBytes,
 		Path:   flagPath,
 		Height: int64(flagHeight),
@@ -599,34 +573,38 @@ func cmdQuery(cmd *cobra.Command, args []string) error {
 	return nil
 }
 
-func makeKVStoreCmd(logger log.Logger) func(*cobra.Command, []string) error {
-	return func(cmd *cobra.Command, args []string) error {
-		// Create the application - in memory or persisted to disk
-		var app types.Application
-		if flagPersist == "" {
-			app = kvstore.NewApplication()
-		} else {
-			app = kvstore.NewPersistentKVStoreApplication(logger, flagPersist)
-		}
+func cmdKVStore(cmd *cobra.Command, args []string) error {
+	logger := log.MustNewDefaultLogger(log.LogFormatPlain, log.LogLevelInfo, false)
 
-		// Start the listener
-		srv, err := server.NewServer(logger.With("module", "abci-server"), flagAddress, flagAbci, app)
-		if err != nil {
-			return err
-		}
-
-		ctx, cancel := signal.NotifyContext(cmd.Context(), syscall.SIGTERM)
-		defer cancel()
-
-		if err := srv.Start(ctx); err != nil {
-			return err
-		}
-
-		// Run forever.
-		<-ctx.Done()
-		return nil
+	// Create the application - in memory or persisted to disk
+	var app types.Application
+	if flagPersist == "" {
+		app = kvstore.NewApplication()
+	} else {
+		app = kvstore.NewPersistentKVStoreApplication(flagPersist)
+		app.(*kvstore.PersistentKVStoreApplication).SetLogger(logger.With("module", "kvstore"))
 	}
 
+	// Start the listener
+	srv, err := server.NewServer(flagAddress, flagAbci, app)
+	if err != nil {
+		return err
+	}
+	srv.SetLogger(logger.With("module", "abci-server"))
+	if err := srv.Start(); err != nil {
+		return err
+	}
+
+	// Stop upon receiving SIGTERM or CTRL-C.
+	tmos.TrapSignal(logger, func() {
+		// Cleanup
+		if err := srv.Stop(); err != nil {
+			logger.Error("Error while stopping server", "err", err)
+		}
+	})
+
+	// Run forever.
+	select {}
 }
 
 //--------------------------------------------------------------------------------

abci/example/example_test.go

@@ -6,18 +6,18 @@ import (
 	"math/rand"
 	"net"
 	"os"
+	"reflect"
 	"testing"
 	"time"
 
 	"github.com/stretchr/testify/require"
 
 	"google.golang.org/grpc"
-	"google.golang.org/grpc/credentials/insecure"
 
 	"github.com/tendermint/tendermint/libs/log"
 	tmnet "github.com/tendermint/tendermint/libs/net"
 
-	abciclient "github.com/tendermint/tendermint/abci/client"
+	abcicli "github.com/tendermint/tendermint/abci/client"
 	"github.com/tendermint/tendermint/abci/example/code"
 	"github.com/tendermint/tendermint/abci/example/kvstore"
 	abciserver "github.com/tendermint/tendermint/abci/server"
@@ -29,69 +29,95 @@ func init() {
 }
 
 func TestKVStore(t *testing.T) {
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-	logger := log.NewNopLogger()
-
-	t.Log("### Testing KVStore")
-	testBulk(ctx, t, logger, kvstore.NewApplication())
+	fmt.Println("### Testing KVStore")
+	testStream(t, kvstore.NewApplication())
 }
 
 func TestBaseApp(t *testing.T) {
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-	logger := log.NewNopLogger()
-
-	t.Log("### Testing BaseApp")
-	testBulk(ctx, t, logger, types.NewBaseApplication())
+	fmt.Println("### Testing BaseApp")
+	testStream(t, types.NewBaseApplication())
 }
 
 func TestGRPC(t *testing.T) {
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-
-	logger := log.NewNopLogger()
-
-	t.Log("### Testing GRPC")
-	testGRPCSync(ctx, t, logger, types.NewGRPCApplication(types.NewBaseApplication()))
+	fmt.Println("### Testing GRPC")
+	testGRPCSync(t, types.NewGRPCApplication(types.NewBaseApplication()))
 }
 
-func testBulk(ctx context.Context, t *testing.T, logger log.Logger, app types.Application) {
-	t.Helper()
-
-	const numDeliverTxs = 700000
+func testStream(t *testing.T, app types.Application) {
+	const numDeliverTxs = 20000
 	socketFile := fmt.Sprintf("test-%08x.sock", rand.Int31n(1<<30))
 	defer os.Remove(socketFile)
 	socket := fmt.Sprintf("unix://%v", socketFile)
+
 	// Start the listener
-	server := abciserver.NewSocketServer(logger.With("module", "abci-server"), socket, app)
-	t.Cleanup(server.Wait)
-	err := server.Start(ctx)
+	server := abciserver.NewSocketServer(socket, app)
+	server.SetLogger(log.TestingLogger().With("module", "abci-server"))
+	err := server.Start()
 	require.NoError(t, err)
+	t.Cleanup(func() {
+		if err := server.Stop(); err != nil {
+			t.Error(err)
+		}
+	})
 
 	// Connect to the socket
-	client := abciclient.NewSocketClient(logger.With("module", "abci-client"), socket, false)
-	t.Cleanup(client.Wait)
-
-	err = client.Start(ctx)
+	client := abcicli.NewSocketClient(socket, false)
+	client.SetLogger(log.TestingLogger().With("module", "abci-client"))
+	err = client.Start()
 	require.NoError(t, err)
+	t.Cleanup(func() {
+		if err := client.Stop(); err != nil {
+			t.Error(err)
+		}
+	})
 
-	// Construct request
-	rfb := types.RequestFinalizeBlock{Txs: make([][]byte, numDeliverTxs)}
+	done := make(chan struct{})
+	counter := 0
+	client.SetResponseCallback(func(req *types.Request, res *types.Response) {
+		// Process response
+		switch r := res.Value.(type) {
+		case *types.Response_DeliverTx:
+			counter++
+			if r.DeliverTx.Code != code.CodeTypeOK {
+				t.Error("DeliverTx failed with ret_code", r.DeliverTx.Code)
+			}
+			if counter > numDeliverTxs {
+				t.Fatalf("Too many DeliverTx responses. Got %d, expected %d", counter, numDeliverTxs)
+			}
+			if counter == numDeliverTxs {
+				go func() {
+					time.Sleep(time.Second * 1) // Wait for a bit to allow counter overflow
+					close(done)
+				}()
+				return
+			}
+		case *types.Response_Flush:
+			// ignore
+		default:
+			t.Error("Unexpected response type", reflect.TypeOf(res.Value))
+		}
+	})
+
+	ctx := context.Background()
+
+	// Write requests
 	for counter := 0; counter < numDeliverTxs; counter++ {
-		rfb.Txs[counter] = []byte("test")
-	}
-	// Send bulk request
-	res, err := client.FinalizeBlock(ctx, rfb)
-	require.NoError(t, err)
-	require.Equal(t, numDeliverTxs, len(res.Txs), "Number of txs doesn't match")
-	for _, tx := range res.Txs {
-		require.Equal(t, tx.Code, code.CodeTypeOK, "Tx failed")
+		// Send request
+		_, err = client.DeliverTxAsync(ctx, types.RequestDeliverTx{Tx: []byte("test")})
+		require.NoError(t, err)
+
+		// Sometimes send flush messages
+		if counter%128 == 0 {
+			err = client.FlushSync(context.Background())
+			require.NoError(t, err)
+		}
 	}
 
 	// Send final flush message
-	err = client.Flush(ctx)
+	_, err = client.FlushAsync(ctx)
 	require.NoError(t, err)
+
+	<-done
 }
 
 //-------------------------
@@ -101,25 +127,30 @@ func dialerFunc(ctx context.Context, addr string) (net.Conn, error) {
 	return tmnet.Connect(addr)
 }
 
-func testGRPCSync(ctx context.Context, t *testing.T, logger log.Logger, app types.ABCIApplicationServer) {
-	t.Helper()
-	numDeliverTxs := 680000
-	socketFile := fmt.Sprintf("/tmp/test-%08x.sock", rand.Int31n(1<<30))
+func testGRPCSync(t *testing.T, app types.ABCIApplicationServer) {
+	numDeliverTxs := 2000
+	socketFile := fmt.Sprintf("test-%08x.sock", rand.Int31n(1<<30))
 	defer os.Remove(socketFile)
 	socket := fmt.Sprintf("unix://%v", socketFile)
 
 	// Start the listener
-	server := abciserver.NewGRPCServer(logger.With("module", "abci-server"), socket, app)
+	server := abciserver.NewGRPCServer(socket, app)
+	server.SetLogger(log.TestingLogger().With("module", "abci-server"))
+	if err := server.Start(); err != nil {
+		t.Fatalf("Error starting GRPC server: %v", err.Error())
+	}
 
-	require.NoError(t, server.Start(ctx))
-	t.Cleanup(server.Wait)
+	t.Cleanup(func() {
+		if err := server.Stop(); err != nil {
+			t.Error(err)
+		}
+	})
 
 	// Connect to the socket
-	conn, err := grpc.Dial(socket,
-		grpc.WithTransportCredentials(insecure.NewCredentials()),
-		grpc.WithContextDialer(dialerFunc),
-	)
-	require.NoError(t, err, "Error dialing GRPC server")
+	conn, err := grpc.Dial(socket, grpc.WithInsecure(), grpc.WithContextDialer(dialerFunc))
+	if err != nil {
+		t.Fatalf("Error dialing GRPC server: %v", err.Error())
+	}
 
 	t.Cleanup(func() {
 		if err := conn.Close(); err != nil {
@@ -129,17 +160,26 @@ func testGRPCSync(ctx context.Context, t *testing.T, logger log.Logger, app type
 
 	client := types.NewABCIApplicationClient(conn)
 
-	// Construct request
-	rfb := types.RequestFinalizeBlock{Txs: make([][]byte, numDeliverTxs)}
+	// Write requests
 	for counter := 0; counter < numDeliverTxs; counter++ {
-		rfb.Txs[counter] = []byte("test")
-	}
+		// Send request
+		response, err := client.DeliverTx(context.Background(), &types.RequestDeliverTx{Tx: []byte("test")})
+		if err != nil {
+			t.Fatalf("Error in GRPC DeliverTx: %v", err.Error())
+		}
+		counter++
+		if response.Code != code.CodeTypeOK {
+			t.Error("DeliverTx failed with ret_code", response.Code)
+		}
+		if counter > numDeliverTxs {
+			t.Fatal("Too many DeliverTx responses")
+		}
+		t.Log("response", counter)
+		if counter == numDeliverTxs {
+			go func() {
+				time.Sleep(time.Second * 1) // Wait for a bit to allow counter overflow
+			}()
+		}
 
-	// Send request
-	response, err := client.FinalizeBlock(ctx, &rfb)
-	require.NoError(t, err, "Error in GRPC FinalizeBlock")
-	require.Equal(t, numDeliverTxs, len(response.Txs), "Number of txs returned via GRPC doesn't match")
-	for _, tx := range response.Txs {
-		require.Equal(t, tx.Code, code.CodeTypeOK, "Tx failed")
 	}
 }

abci/example/kvstore/README.md

@@ -4,7 +4,7 @@ There are two app's here: the KVStoreApplication and the PersistentKVStoreApplic
 
 ## KVStoreApplication
 
-The KVStoreApplication is a simple merkle key-value store.
+The KVStoreApplication is a simple merkle key-value store. 
 Transactions of the form `key=value` are stored as key-value pairs in the tree.
 Transactions without an `=` sign set the value to the key.
 The app has no replay protection (other than what the mempool provides).
@@ -12,7 +12,7 @@ The app has no replay protection (other than what the mempool provides).
 ## PersistentKVStoreApplication
 
 The PersistentKVStoreApplication wraps the KVStoreApplication
-and provides three additional features:
+and provides two additional features:
 
 1) persistence of state across app restarts (using Tendermint's ABCI-Handshake mechanism)
 2) validator set changes
@@ -27,4 +27,4 @@ Validator set changes are effected using the following transaction format:
 
 where `pubkeyN` is a base64-encoded 32-byte ed25519 key and `powerN` is a new voting power for the validator with `pubkeyN` (possibly a new one).
 To remove a validator from the validator set, set power to `0`.
-There is no sybil protection against new validators joining.
+There is no sybil protection against new validators joining. 

abci/example/kvstore/kvstore.go

@@ -2,21 +2,14 @@ package kvstore
 
 import (
 	"bytes"
-	"encoding/base64"
 	"encoding/binary"
 	"encoding/json"
 	"fmt"
-	"strconv"
-	"strings"
-	"sync"
 
 	dbm "github.com/tendermint/tm-db"
 
 	"github.com/tendermint/tendermint/abci/example/code"
 	"github.com/tendermint/tendermint/abci/types"
-	"github.com/tendermint/tendermint/crypto/encoding"
-	"github.com/tendermint/tendermint/libs/log"
-	cryptoproto "github.com/tendermint/tendermint/proto/tendermint/crypto"
 	"github.com/tendermint/tendermint/version"
 )
 
@@ -72,41 +65,17 @@ var _ types.Application = (*Application)(nil)
 
 type Application struct {
 	types.BaseApplication
-	mu           sync.Mutex
+
 	state        State
 	RetainBlocks int64 // blocks to retain after commit (via ResponseCommit.RetainHeight)
-	logger       log.Logger
-
-	// validator set
-	ValUpdates         []types.ValidatorUpdate
-	valAddrToPubKeyMap map[string]cryptoproto.PublicKey
 }
 
 func NewApplication() *Application {
-	return &Application{
-		logger:             log.NewNopLogger(),
-		state:              loadState(dbm.NewMemDB()),
-		valAddrToPubKeyMap: make(map[string]cryptoproto.PublicKey),
-	}
+	state := loadState(dbm.NewMemDB())
+	return &Application{state: state}
 }
 
-func (app *Application) InitChain(req types.RequestInitChain) types.ResponseInitChain {
-	app.mu.Lock()
-	defer app.mu.Unlock()
-
-	for _, v := range req.Validators {
-		r := app.updateValidator(v)
-		if r.IsErr() {
-			app.logger.Error("error updating validators", "r", r)
-			panic("problem updating validators")
-		}
-	}
-	return types.ResponseInitChain{}
-}
-
-func (app *Application) Info(req types.RequestInfo) types.ResponseInfo {
-	app.mu.Lock()
-	defer app.mu.Unlock()
+func (app *Application) Info(req types.RequestInfo) (resInfo types.ResponseInfo) {
 	return types.ResponseInfo{
 		Data:             fmt.Sprintf("{\"size\":%v}", app.state.Size),
 		Version:          version.ABCIVersion,
@@ -116,26 +85,15 @@ func (app *Application) Info(req types.RequestInfo) types.ResponseInfo {
 	}
 }
 
-// tx is either "val:pubkey!power" or "key=value" or just arbitrary bytes
-func (app *Application) handleTx(tx []byte) *types.ResponseDeliverTx {
-	// if it starts with "val:", update the validator set
-	// format is "val:pubkey!power"
-	if isValidatorTx(tx) {
-		// update validators in the merkle tree
-		// and in app.ValUpdates
-		return app.execValidatorTx(tx)
-	}
-
-	if isPrepareTx(tx) {
-		return app.execPrepareTx(tx)
-	}
-
+// tx is either "key=value" or just arbitrary bytes
+func (app *Application) DeliverTx(req types.RequestDeliverTx) types.ResponseDeliverTx {
 	var key, value string
-	parts := bytes.Split(tx, []byte("="))
+
+	parts := bytes.Split(req.Tx, []byte("="))
 	if len(parts) == 2 {
 		key, value = string(parts[0]), string(parts[1])
 	} else {
-		key, value = string(tx), string(tx)
+		key, value = string(req.Tx), string(req.Tx)
 	}
 
 	err := app.state.db.Set(prefixKey([]byte(key)), []byte(value))
@@ -156,56 +114,14 @@ func (app *Application) handleTx(tx []byte) *types.ResponseDeliverTx {
 		},
 	}
 
-	return &types.ResponseDeliverTx{Code: code.CodeTypeOK, Events: events}
+	return types.ResponseDeliverTx{Code: code.CodeTypeOK, Events: events}
 }
 
-func (app *Application) Close() error {
-	app.mu.Lock()
-	defer app.mu.Unlock()
-
-	return app.state.db.Close()
-}
-
-func (app *Application) FinalizeBlock(req types.RequestFinalizeBlock) types.ResponseFinalizeBlock {
-	app.mu.Lock()
-	defer app.mu.Unlock()
-
-	// reset valset changes
-	app.ValUpdates = make([]types.ValidatorUpdate, 0)
-
-	// Punish validators who committed equivocation.
-	for _, ev := range req.ByzantineValidators {
-		if ev.Type == types.EvidenceType_DUPLICATE_VOTE {
-			addr := string(ev.Validator.Address)
-			if pubKey, ok := app.valAddrToPubKeyMap[addr]; ok {
-				app.updateValidator(types.ValidatorUpdate{
-					PubKey: pubKey,
-					Power:  ev.Validator.Power - 1,
-				})
-				app.logger.Info("Decreased val power by 1 because of the equivocation",
-					"val", addr)
-			} else {
-				panic(fmt.Errorf("wanted to punish val %q but can't find it", addr))
-			}
-		}
-	}
-
-	respTxs := make([]*types.ResponseDeliverTx, len(req.Txs))
-	for i, tx := range req.Txs {
-		respTxs[i] = app.handleTx(tx)
-	}
-
-	return types.ResponseFinalizeBlock{Txs: respTxs, ValidatorUpdates: app.ValUpdates}
-}
-
-func (*Application) CheckTx(req types.RequestCheckTx) types.ResponseCheckTx {
+func (app *Application) CheckTx(req types.RequestCheckTx) types.ResponseCheckTx {
 	return types.ResponseCheckTx{Code: code.CodeTypeOK, GasWanted: 1}
 }
 
 func (app *Application) Commit() types.ResponseCommit {
-	app.mu.Lock()
-	defer app.mu.Unlock()
-
 	// Using a memdb - just return the big endian size of the db
 	appHash := make([]byte, 8)
 	binary.PutVarint(appHash, app.state.Size)
@@ -221,225 +137,37 @@ func (app *Application) Commit() types.ResponseCommit {
 }
 
 // Returns an associated value or nil if missing.
-func (app *Application) Query(reqQuery types.RequestQuery) types.ResponseQuery {
-	app.mu.Lock()
-	defer app.mu.Unlock()
-
-	if reqQuery.Path == "/val" {
-		key := []byte("val:" + string(reqQuery.Data))
-		value, err := app.state.db.Get(key)
-		if err != nil {
-			panic(err)
-		}
-
-		return types.ResponseQuery{
-			Key:   reqQuery.Data,
-			Value: value,
-		}
-	}
-
+func (app *Application) Query(reqQuery types.RequestQuery) (resQuery types.ResponseQuery) {
 	if reqQuery.Prove {
 		value, err := app.state.db.Get(prefixKey(reqQuery.Data))
 		if err != nil {
 			panic(err)
 		}
-
-		resQuery := types.ResponseQuery{
-			Index:  -1,
-			Key:    reqQuery.Data,
-			Value:  value,
-			Height: app.state.Height,
-		}
-
 		if value == nil {
 			resQuery.Log = "does not exist"
 		} else {
 			resQuery.Log = "exists"
 		}
+		resQuery.Index = -1 // TODO make Proof return index
+		resQuery.Key = reqQuery.Data
+		resQuery.Value = value
+		resQuery.Height = app.state.Height
 
-		return resQuery
+		return
 	}
 
+	resQuery.Key = reqQuery.Data
 	value, err := app.state.db.Get(prefixKey(reqQuery.Data))
 	if err != nil {
 		panic(err)
 	}
-
-	resQuery := types.ResponseQuery{
-		Key:    reqQuery.Data,
-		Value:  value,
-		Height: app.state.Height,
-	}
-
 	if value == nil {
 		resQuery.Log = "does not exist"
 	} else {
 		resQuery.Log = "exists"
 	}
+	resQuery.Value = value
+	resQuery.Height = app.state.Height
 
 	return resQuery
 }
-
-func (app *Application) PrepareProposal(req types.RequestPrepareProposal) types.ResponsePrepareProposal {
-	app.mu.Lock()
-	defer app.mu.Unlock()
-
-	return types.ResponsePrepareProposal{BlockData: app.substPrepareTx(req.BlockData)}
-}
-
-func (*Application) ProcessProposal(req types.RequestProcessProposal) types.ResponseProcessProposal {
-	for _, tx := range req.Txs {
-		if len(tx) == 0 {
-			return types.ResponseProcessProposal{Accept: false}
-		}
-	}
-	return types.ResponseProcessProposal{Accept: true}
-}
-
-//---------------------------------------------
-// update validators
-
-func (app *Application) Validators() (validators []types.ValidatorUpdate) {
-	app.mu.Lock()
-	defer app.mu.Unlock()
-
-	itr, err := app.state.db.Iterator(nil, nil)
-	if err != nil {
-		panic(err)
-	}
-	for ; itr.Valid(); itr.Next() {
-		if isValidatorTx(itr.Key()) {
-			validator := new(types.ValidatorUpdate)
-			err := types.ReadMessage(bytes.NewBuffer(itr.Value()), validator)
-			if err != nil {
-				panic(err)
-			}
-			validators = append(validators, *validator)
-		}
-	}
-	if err = itr.Error(); err != nil {
-		panic(err)
-	}
-	return
-}
-
-func MakeValSetChangeTx(pubkey cryptoproto.PublicKey, power int64) []byte {
-	pk, err := encoding.PubKeyFromProto(pubkey)
-	if err != nil {
-		panic(err)
-	}
-	pubStr := base64.StdEncoding.EncodeToString(pk.Bytes())
-	return []byte(fmt.Sprintf("val:%s!%d", pubStr, power))
-}
-
-func isValidatorTx(tx []byte) bool {
-	return strings.HasPrefix(string(tx), ValidatorSetChangePrefix)
-}
-
-// format is "val:pubkey!power"
-// pubkey is a base64-encoded 32-byte ed25519 key
-func (app *Application) execValidatorTx(tx []byte) *types.ResponseDeliverTx {
-	tx = tx[len(ValidatorSetChangePrefix):]
-
-	//  get the pubkey and power
-	pubKeyAndPower := strings.Split(string(tx), "!")
-	if len(pubKeyAndPower) != 2 {
-		return &types.ResponseDeliverTx{
-			Code: code.CodeTypeEncodingError,
-			Log:  fmt.Sprintf("Expected 'pubkey!power'. Got %v", pubKeyAndPower)}
-	}
-	pubkeyS, powerS := pubKeyAndPower[0], pubKeyAndPower[1]
-
-	// decode the pubkey
-	pubkey, err := base64.StdEncoding.DecodeString(pubkeyS)
-	if err != nil {
-		return &types.ResponseDeliverTx{
-			Code: code.CodeTypeEncodingError,
-			Log:  fmt.Sprintf("Pubkey (%s) is invalid base64", pubkeyS)}
-	}
-
-	// decode the power
-	power, err := strconv.ParseInt(powerS, 10, 64)
-	if err != nil {
-		return &types.ResponseDeliverTx{
-			Code: code.CodeTypeEncodingError,
-			Log:  fmt.Sprintf("Power (%s) is not an int", powerS)}
-	}
-
-	// update
-	return app.updateValidator(types.UpdateValidator(pubkey, power, ""))
-}
-
-// add, update, or remove a validator
-func (app *Application) updateValidator(v types.ValidatorUpdate) *types.ResponseDeliverTx {
-	pubkey, err := encoding.PubKeyFromProto(v.PubKey)
-	if err != nil {
-		panic(fmt.Errorf("can't decode public key: %w", err))
-	}
-	key := []byte("val:" + string(pubkey.Bytes()))
-
-	if v.Power == 0 {
-		// remove validator
-		hasKey, err := app.state.db.Has(key)
-		if err != nil {
-			panic(err)
-		}
-		if !hasKey {
-			pubStr := base64.StdEncoding.EncodeToString(pubkey.Bytes())
-			return &types.ResponseDeliverTx{
-				Code: code.CodeTypeUnauthorized,
-				Log:  fmt.Sprintf("Cannot remove non-existent validator %s", pubStr)}
-		}
-		if err = app.state.db.Delete(key); err != nil {
-			panic(err)
-		}
-		delete(app.valAddrToPubKeyMap, string(pubkey.Address()))
-	} else {
-		// add or update validator
-		value := bytes.NewBuffer(make([]byte, 0))
-		if err := types.WriteMessage(&v, value); err != nil {
-			return &types.ResponseDeliverTx{
-				Code: code.CodeTypeEncodingError,
-				Log:  fmt.Sprintf("error encoding validator: %v", err)}
-		}
-		if err = app.state.db.Set(key, value.Bytes()); err != nil {
-			panic(err)
-		}
-		app.valAddrToPubKeyMap[string(pubkey.Address())] = v.PubKey
-	}
-
-	// we only update the changes array if we successfully updated the tree
-	app.ValUpdates = append(app.ValUpdates, v)
-
-	return &types.ResponseDeliverTx{Code: code.CodeTypeOK}
-}
-
-// -----------------------------
-// prepare proposal machinery
-
-const PreparePrefix = "prepare"
-
-func isPrepareTx(tx []byte) bool {
-	return strings.HasPrefix(string(tx), PreparePrefix)
-}
-
-// execPrepareTx is noop. tx data is considered as placeholder
-// and is substitute at the PrepareProposal.
-func (app *Application) execPrepareTx(tx []byte) *types.ResponseDeliverTx {
-	// noop
-	return &types.ResponseDeliverTx{}
-}
-
-// substPrepareTx subst all the preparetx in the blockdata
-// to null string(could be any arbitrary string).
-func (app *Application) substPrepareTx(blockData [][]byte) [][]byte {
-	// TODO: this mechanism will change with the current spec of PrepareProposal
-	// We now have a special type for marking a tx as changed
-	for i, tx := range blockData {
-		if isPrepareTx(tx) {
-			blockData[i] = make([]byte, len(tx))
-		}
-	}
-
-	return blockData
-}

abci/example/kvstore/kvstore_test.go

@@ -3,16 +3,16 @@ package kvstore
 import (
 	"context"
 	"fmt"
+	"io/ioutil"
 	"sort"
 	"testing"
 
-	"github.com/fortytw2/leaktest"
 	"github.com/stretchr/testify/require"
 
 	"github.com/tendermint/tendermint/libs/log"
 	"github.com/tendermint/tendermint/libs/service"
 
-	abciclient "github.com/tendermint/tendermint/abci/client"
+	abcicli "github.com/tendermint/tendermint/abci/client"
 	"github.com/tendermint/tendermint/abci/example/code"
 	abciserver "github.com/tendermint/tendermint/abci/server"
 	"github.com/tendermint/tendermint/abci/types"
@@ -24,15 +24,15 @@ const (
 	testValue = "def"
 )
 
+var ctx = context.Background()
+
 func testKVStore(t *testing.T, app types.Application, tx []byte, key, value string) {
-	req := types.RequestFinalizeBlock{Txs: [][]byte{tx}}
-	ar := app.FinalizeBlock(req)
-	require.Equal(t, 1, len(ar.Txs))
-	require.False(t, ar.Txs[0].IsErr())
+	req := types.RequestDeliverTx{Tx: tx}
+	ar := app.DeliverTx(req)
+	require.False(t, ar.IsErr(), ar)
 	// repeating tx doesn't raise error
-	ar = app.FinalizeBlock(req)
-	require.Equal(t, 1, len(ar.Txs))
-	require.False(t, ar.Txs[0].IsErr())
+	ar = app.DeliverTx(req)
+	require.False(t, ar.IsErr(), ar)
 	// commit
 	app.Commit()
 
@@ -74,10 +74,11 @@ func TestKVStoreKV(t *testing.T) {
 }
 
 func TestPersistentKVStoreKV(t *testing.T) {
-	dir := t.TempDir()
-	logger := log.NewNopLogger()
-
-	kvstore := NewPersistentKVStoreApplication(logger, dir)
+	dir, err := ioutil.TempDir("/tmp", "abci-kvstore-test") // TODO
+	if err != nil {
+		t.Fatal(err)
+	}
+	kvstore := NewPersistentKVStoreApplication(dir)
 	key := testKey
 	value := key
 	tx := []byte(key)
@@ -89,10 +90,11 @@ func TestPersistentKVStoreKV(t *testing.T) {
 }
 
 func TestPersistentKVStoreInfo(t *testing.T) {
-	dir := t.TempDir()
-	logger := log.NewNopLogger()
-
-	kvstore := NewPersistentKVStoreApplication(logger, dir)
+	dir, err := ioutil.TempDir("/tmp", "abci-kvstore-test") // TODO
+	if err != nil {
+		t.Fatal(err)
+	}
+	kvstore := NewPersistentKVStoreApplication(dir)
 	InitKVStore(kvstore)
 	height := int64(0)
 
@@ -107,7 +109,8 @@ func TestPersistentKVStoreInfo(t *testing.T) {
 	header := tmproto.Header{
 		Height: height,
 	}
-	kvstore.FinalizeBlock(types.RequestFinalizeBlock{Hash: hash, Header: header, Height: height})
+	kvstore.BeginBlock(types.RequestBeginBlock{Hash: hash, Header: header})
+	kvstore.EndBlock(types.RequestEndBlock{Height: header.Height})
 	kvstore.Commit()
 
 	resInfo = kvstore.Info(types.RequestInfo{})
@@ -119,7 +122,11 @@ func TestPersistentKVStoreInfo(t *testing.T) {
 
 // add a validator, remove a validator, update a validator
 func TestValUpdates(t *testing.T) {
-	kvstore := NewApplication()
+	dir, err := ioutil.TempDir("/tmp", "abci-kvstore-test") // TODO
+	if err != nil {
+		t.Fatal(err)
+	}
+	kvstore := NewPersistentKVStoreApplication(dir)
 
 	// init with some validators
 	total := 10
@@ -193,22 +200,21 @@ func makeApplyBlock(
 		Height: height,
 	}
 
-	resFinalizeBlock := kvstore.FinalizeBlock(types.RequestFinalizeBlock{
-		Hash:   hash,
-		Header: header,
-		Height: height,
-		Txs:    txs,
-	})
-
+	kvstore.BeginBlock(types.RequestBeginBlock{Hash: hash, Header: header})
+	for _, tx := range txs {
+		if r := kvstore.DeliverTx(types.RequestDeliverTx{Tx: tx}); r.IsErr() {
+			t.Fatal(r)
+		}
+	}
+	resEndBlock := kvstore.EndBlock(types.RequestEndBlock{Height: header.Height})
 	kvstore.Commit()
 
-	valsEqual(t, diff, resFinalizeBlock.ValidatorUpdates)
+	valsEqual(t, diff, resEndBlock.ValidatorUpdates)
 
 }
 
 // order doesn't matter
 func valsEqual(t *testing.T, vals1, vals2 []types.ValidatorUpdate) {
-	t.Helper()
 	if len(vals1) != len(vals2) {
 		t.Fatalf("vals dont match in len. got %d, expected %d", len(vals2), len(vals1))
 	}
@@ -223,142 +229,136 @@ func valsEqual(t *testing.T, vals1, vals2 []types.ValidatorUpdate) {
 	}
 }
 
-func makeSocketClientServer(
-	ctx context.Context,
-	t *testing.T,
-	logger log.Logger,
-	app types.Application,
-	name string,
-) (abciclient.Client, service.Service, error) {
-	t.Helper()
-
-	ctx, cancel := context.WithCancel(ctx)
-	t.Cleanup(cancel)
-	t.Cleanup(leaktest.Check(t))
-
+func makeSocketClientServer(app types.Application, name string) (abcicli.Client, service.Service, error) {
 	// Start the listener
 	socket := fmt.Sprintf("unix://%s.sock", name)
+	logger := log.TestingLogger()
 
-	server := abciserver.NewSocketServer(logger.With("module", "abci-server"), socket, app)
-	if err := server.Start(ctx); err != nil {
-		cancel()
+	server := abciserver.NewSocketServer(socket, app)
+	server.SetLogger(logger.With("module", "abci-server"))
+	if err := server.Start(); err != nil {
 		return nil, nil, err
 	}
 
 	// Connect to the socket
-	client := abciclient.NewSocketClient(logger.With("module", "abci-client"), socket, false)
-	if err := client.Start(ctx); err != nil {
-		cancel()
+	client := abcicli.NewSocketClient(socket, false)
+	client.SetLogger(logger.With("module", "abci-client"))
+	if err := client.Start(); err != nil {
+		if err = server.Stop(); err != nil {
+			return nil, nil, err
+		}
 		return nil, nil, err
 	}
 
 	return client, server, nil
 }
 
-func makeGRPCClientServer(
-	ctx context.Context,
-	t *testing.T,
-	logger log.Logger,
-	app types.Application,
-	name string,
-) (abciclient.Client, service.Service, error) {
-	ctx, cancel := context.WithCancel(ctx)
-	t.Cleanup(cancel)
-	t.Cleanup(leaktest.Check(t))
-
+func makeGRPCClientServer(app types.Application, name string) (abcicli.Client, service.Service, error) {
 	// Start the listener
 	socket := fmt.Sprintf("unix://%s.sock", name)
+	logger := log.TestingLogger()
 
 	gapp := types.NewGRPCApplication(app)
-	server := abciserver.NewGRPCServer(logger.With("module", "abci-server"), socket, gapp)
-
-	if err := server.Start(ctx); err != nil {
-		cancel()
+	server := abciserver.NewGRPCServer(socket, gapp)
+	server.SetLogger(logger.With("module", "abci-server"))
+	if err := server.Start(); err != nil {
 		return nil, nil, err
 	}
 
-	client := abciclient.NewGRPCClient(logger.With("module", "abci-client"), socket, true)
-
-	if err := client.Start(ctx); err != nil {
-		cancel()
+	client := abcicli.NewGRPCClient(socket, true)
+	client.SetLogger(logger.With("module", "abci-client"))
+	if err := client.Start(); err != nil {
+		if err := server.Stop(); err != nil {
+			return nil, nil, err
+		}
 		return nil, nil, err
 	}
 	return client, server, nil
 }
 
 func TestClientServer(t *testing.T) {
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-	logger := log.NewNopLogger()
-
 	// set up socket app
 	kvstore := NewApplication()
-	client, server, err := makeSocketClientServer(ctx, t, logger, kvstore, "kvstore-socket")
+	client, server, err := makeSocketClientServer(kvstore, "kvstore-socket")
 	require.NoError(t, err)
-	t.Cleanup(func() { cancel(); server.Wait() })
-	t.Cleanup(func() { cancel(); client.Wait() })
+	t.Cleanup(func() {
+		if err := server.Stop(); err != nil {
+			t.Error(err)
+		}
+	})
+	t.Cleanup(func() {
+		if err := client.Stop(); err != nil {
+			t.Error(err)
+		}
+	})
 
-	runClientTests(ctx, t, client)
+	runClientTests(t, client)
 
 	// set up grpc app
 	kvstore = NewApplication()
-	gclient, gserver, err := makeGRPCClientServer(ctx, t, logger, kvstore, "/tmp/kvstore-grpc")
+	gclient, gserver, err := makeGRPCClientServer(kvstore, "kvstore-grpc")
 	require.NoError(t, err)
 
-	t.Cleanup(func() { cancel(); gserver.Wait() })
-	t.Cleanup(func() { cancel(); gclient.Wait() })
+	t.Cleanup(func() {
+		if err := gserver.Stop(); err != nil {
+			t.Error(err)
+		}
+	})
+	t.Cleanup(func() {
+		if err := gclient.Stop(); err != nil {
+			t.Error(err)
+		}
+	})
 
-	runClientTests(ctx, t, gclient)
+	runClientTests(t, gclient)
 }
 
-func runClientTests(ctx context.Context, t *testing.T, client abciclient.Client) {
+func runClientTests(t *testing.T, client abcicli.Client) {
 	// run some tests....
 	key := testKey
 	value := key
 	tx := []byte(key)
-	testClient(ctx, t, client, tx, key, value)
+	testClient(t, client, tx, key, value)
 
 	value = testValue
 	tx = []byte(key + "=" + value)
-	testClient(ctx, t, client, tx, key, value)
+	testClient(t, client, tx, key, value)
 }
 
-func testClient(ctx context.Context, t *testing.T, app abciclient.Client, tx []byte, key, value string) {
-	ar, err := app.FinalizeBlock(ctx, types.RequestFinalizeBlock{Txs: [][]byte{tx}})
+func testClient(t *testing.T, app abcicli.Client, tx []byte, key, value string) {
+	ar, err := app.DeliverTxSync(ctx, types.RequestDeliverTx{Tx: tx})
 	require.NoError(t, err)
-	require.Equal(t, 1, len(ar.Txs))
-	require.False(t, ar.Txs[0].IsErr())
-	// repeating FinalizeBlock doesn't raise error
-	ar, err = app.FinalizeBlock(ctx, types.RequestFinalizeBlock{Txs: [][]byte{tx}})
+	require.False(t, ar.IsErr(), ar)
+	// repeating tx doesn't raise error
+	ar, err = app.DeliverTxSync(ctx, types.RequestDeliverTx{Tx: tx})
 	require.NoError(t, err)
-	require.Equal(t, 1, len(ar.Txs))
-	require.False(t, ar.Txs[0].IsErr())
+	require.False(t, ar.IsErr(), ar)
 	// commit
-	_, err = app.Commit(ctx)
+	_, err = app.CommitSync(ctx)
 	require.NoError(t, err)
 
-	info, err := app.Info(ctx, types.RequestInfo{})
+	info, err := app.InfoSync(ctx, types.RequestInfo{})
 	require.NoError(t, err)
 	require.NotZero(t, info.LastBlockHeight)
 
 	// make sure query is fine
-	resQuery, err := app.Query(ctx, types.RequestQuery{
+	resQuery, err := app.QuerySync(ctx, types.RequestQuery{
 		Path: "/store",
 		Data: []byte(key),
 	})
-	require.NoError(t, err)
+	require.Nil(t, err)
 	require.Equal(t, code.CodeTypeOK, resQuery.Code)
 	require.Equal(t, key, string(resQuery.Key))
 	require.Equal(t, value, string(resQuery.Value))
 	require.EqualValues(t, info.LastBlockHeight, resQuery.Height)
 
 	// make sure proof is fine
-	resQuery, err = app.Query(ctx, types.RequestQuery{
+	resQuery, err = app.QuerySync(ctx, types.RequestQuery{
 		Path:  "/store",
 		Data:  []byte(key),
 		Prove: true,
 	})
-	require.NoError(t, err)
+	require.Nil(t, err)
 	require.Equal(t, code.CodeTypeOK, resQuery.Code)
 	require.Equal(t, key, string(resQuery.Key))
 	require.Equal(t, value, string(resQuery.Value))

abci/example/kvstore/persistent_kvstore.go

@@ -2,13 +2,18 @@ package kvstore
 
 import (
 	"bytes"
+	"encoding/base64"
+	"fmt"
+	"strconv"
+	"strings"
 
 	dbm "github.com/tendermint/tm-db"
 
+	"github.com/tendermint/tendermint/abci/example/code"
 	"github.com/tendermint/tendermint/abci/types"
+	cryptoenc "github.com/tendermint/tendermint/crypto/encoding"
 	"github.com/tendermint/tendermint/libs/log"
-	cryptoproto "github.com/tendermint/tendermint/proto/tendermint/crypto"
-	ptypes "github.com/tendermint/tendermint/proto/tendermint/types"
+	pc "github.com/tendermint/tendermint/proto/tendermint/crypto"
 )
 
 const (
@@ -20,59 +25,262 @@ const (
 var _ types.Application = (*PersistentKVStoreApplication)(nil)
 
 type PersistentKVStoreApplication struct {
-	*Application
+	app *Application
+
+	// validator set
+	ValUpdates []types.ValidatorUpdate
+
+	valAddrToPubKeyMap map[string]pc.PublicKey
+
+	logger log.Logger
 }
 
-func NewPersistentKVStoreApplication(logger log.Logger, dbDir string) *PersistentKVStoreApplication {
-	db, err := dbm.NewGoLevelDB("kvstore", dbDir)
+func NewPersistentKVStoreApplication(dbDir string) *PersistentKVStoreApplication {
+	name := "kvstore"
+	db, err := dbm.NewGoLevelDB(name, dbDir)
 	if err != nil {
 		panic(err)
 	}
 
+	state := loadState(db)
+
 	return &PersistentKVStoreApplication{
-		Application: &Application{
-			valAddrToPubKeyMap: make(map[string]cryptoproto.PublicKey),
-			state:              loadState(db),
-			logger:             logger,
-		},
+		app:                &Application{state: state},
+		valAddrToPubKeyMap: make(map[string]pc.PublicKey),
+		logger:             log.NewNopLogger(),
 	}
 }
 
-func (app *PersistentKVStoreApplication) OfferSnapshot(req types.RequestOfferSnapshot) types.ResponseOfferSnapshot {
+func (app *PersistentKVStoreApplication) Close() error {
+	return app.app.state.db.Close()
+}
+
+func (app *PersistentKVStoreApplication) SetLogger(l log.Logger) {
+	app.logger = l
+}
+
+func (app *PersistentKVStoreApplication) Info(req types.RequestInfo) types.ResponseInfo {
+	res := app.app.Info(req)
+	res.LastBlockHeight = app.app.state.Height
+	res.LastBlockAppHash = app.app.state.AppHash
+	return res
+}
+
+// tx is either "val:pubkey!power" or "key=value" or just arbitrary bytes
+func (app *PersistentKVStoreApplication) DeliverTx(req types.RequestDeliverTx) types.ResponseDeliverTx {
+	// if it starts with "val:", update the validator set
+	// format is "val:pubkey!power"
+	if isValidatorTx(req.Tx) {
+		// update validators in the merkle tree
+		// and in app.ValUpdates
+		return app.execValidatorTx(req.Tx)
+	}
+
+	// otherwise, update the key-value store
+	return app.app.DeliverTx(req)
+}
+
+func (app *PersistentKVStoreApplication) CheckTx(req types.RequestCheckTx) types.ResponseCheckTx {
+	return app.app.CheckTx(req)
+}
+
+// Commit will panic if InitChain was not called
+func (app *PersistentKVStoreApplication) Commit() types.ResponseCommit {
+	return app.app.Commit()
+}
+
+// When path=/val and data={validator address}, returns the validator update (types.ValidatorUpdate) varint encoded.
+// For any other path, returns an associated value or nil if missing.
+func (app *PersistentKVStoreApplication) Query(reqQuery types.RequestQuery) (resQuery types.ResponseQuery) {
+	switch reqQuery.Path {
+	case "/val":
+		key := []byte("val:" + string(reqQuery.Data))
+		value, err := app.app.state.db.Get(key)
+		if err != nil {
+			panic(err)
+		}
+
+		resQuery.Key = reqQuery.Data
+		resQuery.Value = value
+		return
+	default:
+		return app.app.Query(reqQuery)
+	}
+}
+
+// Save the validators in the merkle tree
+func (app *PersistentKVStoreApplication) InitChain(req types.RequestInitChain) types.ResponseInitChain {
+	for _, v := range req.Validators {
+		r := app.updateValidator(v)
+		if r.IsErr() {
+			app.logger.Error("Error updating validators", "r", r)
+		}
+	}
+	return types.ResponseInitChain{}
+}
+
+// Track the block hash and header information
+func (app *PersistentKVStoreApplication) BeginBlock(req types.RequestBeginBlock) types.ResponseBeginBlock {
+	// reset valset changes
+	app.ValUpdates = make([]types.ValidatorUpdate, 0)
+
+	// Punish validators who committed equivocation.
+	for _, ev := range req.ByzantineValidators {
+		if ev.Type == types.EvidenceType_DUPLICATE_VOTE {
+			addr := string(ev.Validator.Address)
+			if pubKey, ok := app.valAddrToPubKeyMap[addr]; ok {
+				app.updateValidator(types.ValidatorUpdate{
+					PubKey: pubKey,
+					Power:  ev.Validator.Power - 1,
+				})
+				app.logger.Info("Decreased val power by 1 because of the equivocation",
+					"val", addr)
+			} else {
+				app.logger.Error("Wanted to punish val, but can't find it",
+					"val", addr)
+			}
+		}
+	}
+
+	return types.ResponseBeginBlock{}
+}
+
+// Update the validator set
+func (app *PersistentKVStoreApplication) EndBlock(req types.RequestEndBlock) types.ResponseEndBlock {
+	return types.ResponseEndBlock{ValidatorUpdates: app.ValUpdates}
+}
+
+func (app *PersistentKVStoreApplication) ListSnapshots(
+	req types.RequestListSnapshots) types.ResponseListSnapshots {
+	return types.ResponseListSnapshots{}
+}
+
+func (app *PersistentKVStoreApplication) LoadSnapshotChunk(
+	req types.RequestLoadSnapshotChunk) types.ResponseLoadSnapshotChunk {
+	return types.ResponseLoadSnapshotChunk{}
+}
+
+func (app *PersistentKVStoreApplication) OfferSnapshot(
+	req types.RequestOfferSnapshot) types.ResponseOfferSnapshot {
 	return types.ResponseOfferSnapshot{Result: types.ResponseOfferSnapshot_ABORT}
 }
 
-func (app *PersistentKVStoreApplication) ApplySnapshotChunk(req types.RequestApplySnapshotChunk) types.ResponseApplySnapshotChunk {
+func (app *PersistentKVStoreApplication) ApplySnapshotChunk(
+	req types.RequestApplySnapshotChunk) types.ResponseApplySnapshotChunk {
 	return types.ResponseApplySnapshotChunk{Result: types.ResponseApplySnapshotChunk_ABORT}
 }
 
-func (app *PersistentKVStoreApplication) ExtendVote(req types.RequestExtendVote) types.ResponseExtendVote {
-	return types.ResponseExtendVote{VoteExtension: ConstructVoteExtension(req.Vote.ValidatorAddress)}
+//---------------------------------------------
+// update validators
+
+func (app *PersistentKVStoreApplication) Validators() (validators []types.ValidatorUpdate) {
+	itr, err := app.app.state.db.Iterator(nil, nil)
+	if err != nil {
+		panic(err)
+	}
+	for ; itr.Valid(); itr.Next() {
+		if isValidatorTx(itr.Key()) {
+			validator := new(types.ValidatorUpdate)
+			err := types.ReadMessage(bytes.NewBuffer(itr.Value()), validator)
+			if err != nil {
+				panic(err)
+			}
+			validators = append(validators, *validator)
+		}
+	}
+	if err = itr.Error(); err != nil {
+		panic(err)
+	}
+	return
 }
 
-func (app *PersistentKVStoreApplication) VerifyVoteExtension(req types.RequestVerifyVoteExtension) types.ResponseVerifyVoteExtension {
-	return types.RespondVerifyVoteExtension(app.verifyExtension(req.Vote.ValidatorAddress, req.Vote.VoteExtension))
+func MakeValSetChangeTx(pubkey pc.PublicKey, power int64) []byte {
+	pk, err := cryptoenc.PubKeyFromProto(pubkey)
+	if err != nil {
+		panic(err)
+	}
+	pubStr := base64.StdEncoding.EncodeToString(pk.Bytes())
+	return []byte(fmt.Sprintf("val:%s!%d", pubStr, power))
 }
 
-// -----------------------------
-
-func ConstructVoteExtension(valAddr []byte) *ptypes.VoteExtension {
-	return &ptypes.VoteExtension{
-		AppDataToSign:             valAddr,
-		AppDataSelfAuthenticating: valAddr,
-	}
+func isValidatorTx(tx []byte) bool {
+	return strings.HasPrefix(string(tx), ValidatorSetChangePrefix)
 }
 
-func (app *PersistentKVStoreApplication) verifyExtension(valAddr []byte, ext *ptypes.VoteExtension) bool {
-	if ext == nil {
-		return false
+// format is "val:pubkey!power"
+// pubkey is a base64-encoded 32-byte ed25519 key
+func (app *PersistentKVStoreApplication) execValidatorTx(tx []byte) types.ResponseDeliverTx {
+	tx = tx[len(ValidatorSetChangePrefix):]
+
+	//  get the pubkey and power
+	pubKeyAndPower := strings.Split(string(tx), "!")
+	if len(pubKeyAndPower) != 2 {
+		return types.ResponseDeliverTx{
+			Code: code.CodeTypeEncodingError,
+			Log:  fmt.Sprintf("Expected 'pubkey!power'. Got %v", pubKeyAndPower)}
 	}
-	canonical := ConstructVoteExtension(valAddr)
-	if !bytes.Equal(canonical.AppDataToSign, ext.AppDataToSign) {
-		return false
+	pubkeyS, powerS := pubKeyAndPower[0], pubKeyAndPower[1]
+
+	// decode the pubkey
+	pubkey, err := base64.StdEncoding.DecodeString(pubkeyS)
+	if err != nil {
+		return types.ResponseDeliverTx{
+			Code: code.CodeTypeEncodingError,
+			Log:  fmt.Sprintf("Pubkey (%s) is invalid base64", pubkeyS)}
 	}
-	if !bytes.Equal(canonical.AppDataSelfAuthenticating, ext.AppDataSelfAuthenticating) {
-		return false
+
+	// decode the power
+	power, err := strconv.ParseInt(powerS, 10, 64)
+	if err != nil {
+		return types.ResponseDeliverTx{
+			Code: code.CodeTypeEncodingError,
+			Log:  fmt.Sprintf("Power (%s) is not an int", powerS)}
 	}
-	return true
+
+	// update
+	return app.updateValidator(types.UpdateValidator(pubkey, power, ""))
+}
+
+// add, update, or remove a validator
+func (app *PersistentKVStoreApplication) updateValidator(v types.ValidatorUpdate) types.ResponseDeliverTx {
+	pubkey, err := cryptoenc.PubKeyFromProto(v.PubKey)
+	if err != nil {
+		panic(fmt.Errorf("can't decode public key: %w", err))
+	}
+	key := []byte("val:" + string(pubkey.Bytes()))
+
+	if v.Power == 0 {
+		// remove validator
+		hasKey, err := app.app.state.db.Has(key)
+		if err != nil {
+			panic(err)
+		}
+		if !hasKey {
+			pubStr := base64.StdEncoding.EncodeToString(pubkey.Bytes())
+			return types.ResponseDeliverTx{
+				Code: code.CodeTypeUnauthorized,
+				Log:  fmt.Sprintf("Cannot remove non-existent validator %s", pubStr)}
+		}
+		if err = app.app.state.db.Delete(key); err != nil {
+			panic(err)
+		}
+		delete(app.valAddrToPubKeyMap, string(pubkey.Address()))
+	} else {
+		// add or update validator
+		value := bytes.NewBuffer(make([]byte, 0))
+		if err := types.WriteMessage(&v, value); err != nil {
+			return types.ResponseDeliverTx{
+				Code: code.CodeTypeEncodingError,
+				Log:  fmt.Sprintf("Error encoding validator: %v", err)}
+		}
+		if err = app.app.state.db.Set(key, value.Bytes()); err != nil {
+			panic(err)
+		}
+		app.valAddrToPubKeyMap[string(pubkey.Address())] = v.PubKey
+	}
+
+	// we only update the changes array if we successfully updated the tree
+	app.ValUpdates = append(app.ValUpdates, v)
+
+	return types.ResponseDeliverTx{Code: code.CodeTypeOK}
 }

abci/server/grpc_server.go

@@ -1,64 +1,61 @@
 package server
 
 import (
-	"context"
 	"net"
 
 	"google.golang.org/grpc"
 
 	"github.com/tendermint/tendermint/abci/types"
-	"github.com/tendermint/tendermint/libs/log"
 	tmnet "github.com/tendermint/tendermint/libs/net"
 	"github.com/tendermint/tendermint/libs/service"
 )
 
 type GRPCServer struct {
 	service.BaseService
-	logger log.Logger
 
-	proto  string
-	addr   string
-	server *grpc.Server
+	proto    string
+	addr     string
+	listener net.Listener
+	server   *grpc.Server
 
 	app types.ABCIApplicationServer
 }
 
 // NewGRPCServer returns a new gRPC ABCI server
-func NewGRPCServer(logger log.Logger, protoAddr string, app types.ABCIApplicationServer) service.Service {
+func NewGRPCServer(protoAddr string, app types.ABCIApplicationServer) service.Service {
 	proto, addr := tmnet.ProtocolAndAddress(protoAddr)
 	s := &GRPCServer{
-		logger: logger,
-		proto:  proto,
-		addr:   addr,
-		app:    app,
+		proto:    proto,
+		addr:     addr,
+		listener: nil,
+		app:      app,
 	}
-	s.BaseService = *service.NewBaseService(logger, "ABCIServer", s)
+	s.BaseService = *service.NewBaseService(nil, "ABCIServer", s)
 	return s
 }
 
 // OnStart starts the gRPC service.
-func (s *GRPCServer) OnStart(ctx context.Context) error {
+func (s *GRPCServer) OnStart() error {
+
 	ln, err := net.Listen(s.proto, s.addr)
 	if err != nil {
 		return err
 	}
 
+	s.listener = ln
 	s.server = grpc.NewServer()
 	types.RegisterABCIApplicationServer(s.server, s.app)
 
-	s.logger.Info("Listening", "proto", s.proto, "addr", s.addr)
+	s.Logger.Info("Listening", "proto", s.proto, "addr", s.addr)
 	go func() {
-		go func() {
-			<-ctx.Done()
-			s.server.GracefulStop()
-		}()
-
-		if err := s.server.Serve(ln); err != nil {
-			s.logger.Error("error serving gRPC server", "err", err)
+		if err := s.server.Serve(s.listener); err != nil {
+			s.Logger.Error("Error serving gRPC server", "err", err)
 		}
 	}()
 	return nil
 }
 
 // OnStop stops the gRPC server.
-func (s *GRPCServer) OnStop() { s.server.Stop() }
+func (s *GRPCServer) OnStop() {
+	s.server.Stop()
+}

abci/server/server.go

@@ -12,18 +12,17 @@ import (
 	"fmt"
 
 	"github.com/tendermint/tendermint/abci/types"
-	"github.com/tendermint/tendermint/libs/log"
 	"github.com/tendermint/tendermint/libs/service"
 )
 
-func NewServer(logger log.Logger, protoAddr, transport string, app types.Application) (service.Service, error) {
+func NewServer(protoAddr, transport string, app types.Application) (service.Service, error) {
 	var s service.Service
 	var err error
 	switch transport {
 	case "socket":
-		s = NewSocketServer(logger, protoAddr, app)
+		s = NewSocketServer(protoAddr, app)
 	case "grpc":
-		s = NewGRPCServer(logger, protoAddr, types.NewGRPCApplication(app))
+		s = NewGRPCServer(protoAddr, types.NewGRPCApplication(app))
 	default:
 		err = fmt.Errorf("unknown server type %s", transport)
 	}

abci/server/socket_server.go

@@ -2,16 +2,15 @@ package server
 
 import (
 	"bufio"
-	"context"
-	"errors"
 	"fmt"
 	"io"
 	"net"
+	"os"
 	"runtime"
-	"sync"
 
 	"github.com/tendermint/tendermint/abci/types"
-	"github.com/tendermint/tendermint/libs/log"
+	tmsync "github.com/tendermint/tendermint/internal/libs/sync"
+	tmlog "github.com/tendermint/tendermint/libs/log"
 	tmnet "github.com/tendermint/tendermint/libs/net"
 	"github.com/tendermint/tendermint/libs/service"
 )
@@ -20,241 +19,243 @@ import (
 
 type SocketServer struct {
 	service.BaseService
-	logger log.Logger
+	isLoggerSet bool
 
 	proto    string
 	addr     string
 	listener net.Listener
 
-	connsMtx   sync.Mutex
-	connsClose map[int]func()
+	connsMtx   tmsync.Mutex
+	conns      map[int]net.Conn
 	nextConnID int
 
-	app types.Application
+	appMtx tmsync.Mutex
+	app    types.Application
 }
 
-func NewSocketServer(logger log.Logger, protoAddr string, app types.Application) service.Service {
+func NewSocketServer(protoAddr string, app types.Application) service.Service {
 	proto, addr := tmnet.ProtocolAndAddress(protoAddr)
 	s := &SocketServer{
-		logger:     logger,
-		proto:      proto,
-		addr:       addr,
-		listener:   nil,
-		app:        app,
-		connsClose: make(map[int]func()),
+		proto:    proto,
+		addr:     addr,
+		listener: nil,
+		app:      app,
+		conns:    make(map[int]net.Conn),
 	}
-	s.BaseService = *service.NewBaseService(logger, "ABCIServer", s)
+	s.BaseService = *service.NewBaseService(nil, "ABCIServer", s)
 	return s
 }
 
-func (s *SocketServer) OnStart(ctx context.Context) error {
+func (s *SocketServer) SetLogger(l tmlog.Logger) {
+	s.BaseService.SetLogger(l)
+	s.isLoggerSet = true
+}
+
+func (s *SocketServer) OnStart() error {
 	ln, err := net.Listen(s.proto, s.addr)
 	if err != nil {
 		return err
 	}
 
 	s.listener = ln
-	go s.acceptConnectionsRoutine(ctx)
+	go s.acceptConnectionsRoutine()
 
 	return nil
 }
 
 func (s *SocketServer) OnStop() {
 	if err := s.listener.Close(); err != nil {
-		s.logger.Error("error closing listener", "err", err)
+		s.Logger.Error("Error closing listener", "err", err)
 	}
 
 	s.connsMtx.Lock()
 	defer s.connsMtx.Unlock()
-
-	for _, closer := range s.connsClose {
-		closer()
+	for id, conn := range s.conns {
+		delete(s.conns, id)
+		if err := conn.Close(); err != nil {
+			s.Logger.Error("Error closing connection", "id", id, "conn", conn, "err", err)
+		}
 	}
 }
 
-func (s *SocketServer) addConn(closer func()) int {
+func (s *SocketServer) addConn(conn net.Conn) int {
 	s.connsMtx.Lock()
 	defer s.connsMtx.Unlock()
 
 	connID := s.nextConnID
 	s.nextConnID++
-	s.connsClose[connID] = closer
+	s.conns[connID] = conn
+
 	return connID
 }
 
 // deletes conn even if close errs
-func (s *SocketServer) rmConn(connID int) {
+func (s *SocketServer) rmConn(connID int) error {
 	s.connsMtx.Lock()
 	defer s.connsMtx.Unlock()
-	if closer, ok := s.connsClose[connID]; ok {
-		closer()
-		delete(s.connsClose, connID)
+
+	conn, ok := s.conns[connID]
+	if !ok {
+		return fmt.Errorf("connection %d does not exist", connID)
 	}
+
+	delete(s.conns, connID)
+	return conn.Close()
 }
 
-func (s *SocketServer) acceptConnectionsRoutine(ctx context.Context) {
+func (s *SocketServer) acceptConnectionsRoutine() {
 	for {
-		if ctx.Err() != nil {
-			return
-		}
-
 		// Accept a connection
-		s.logger.Info("Waiting for new connection...")
+		s.Logger.Info("Waiting for new connection...")
 		conn, err := s.listener.Accept()
 		if err != nil {
 			if !s.IsRunning() {
 				return // Ignore error from listener closing.
 			}
-			s.logger.Error("Failed to accept connection", "err", err)
+			s.Logger.Error("Failed to accept connection", "err", err)
 			continue
 		}
 
-		cctx, ccancel := context.WithCancel(ctx)
-		connID := s.addConn(ccancel)
+		s.Logger.Info("Accepted a new connection")
 
-		s.logger.Info("Accepted a new connection", "id", connID)
+		connID := s.addConn(conn)
 
+		closeConn := make(chan error, 2)              // Push to signal connection closed
 		responses := make(chan *types.Response, 1000) // A channel to buffer responses
 
-		once := &sync.Once{}
-		closer := func(err error) {
-			ccancel()
-			once.Do(func() {
-				if cerr := conn.Close(); err != nil {
-					s.logger.Error("error closing connection",
-						"id", connID,
-						"close_err", cerr,
-						"err", err)
-				}
-				s.rmConn(connID)
-
-				switch {
-				case errors.Is(err, context.Canceled):
-					s.logger.Error("Connection terminated",
-						"id", connID,
-						"err", err)
-				case errors.Is(err, context.DeadlineExceeded):
-					s.logger.Error("Connection encountered timeout",
-						"id", connID,
-						"err", err)
-				case errors.Is(err, io.EOF):
-					s.logger.Error("Connection was closed by client",
-						"id", connID)
-				case err != nil:
-					s.logger.Error("Connection error",
-						"id", connID,
-						"err", err)
-				default:
-					s.logger.Error("Connection was closed",
-						"id", connID)
-				}
-			})
-		}
-
 		// Read requests from conn and deal with them
-		go s.handleRequests(cctx, closer, conn, responses)
+		go s.handleRequests(closeConn, conn, responses)
 		// Pull responses from 'responses' and write them to conn.
-		go s.handleResponses(cctx, closer, conn, responses)
+		go s.handleResponses(closeConn, conn, responses)
+
+		// Wait until signal to close connection
+		go s.waitForClose(closeConn, connID)
+	}
+}
+
+func (s *SocketServer) waitForClose(closeConn chan error, connID int) {
+	err := <-closeConn
+	switch {
+	case err == io.EOF:
+		s.Logger.Error("Connection was closed by client")
+	case err != nil:
+		s.Logger.Error("Connection error", "err", err)
+	default:
+		// never happens
+		s.Logger.Error("Connection was closed")
+	}
+
+	// Close the connection
+	if err := s.rmConn(connID); err != nil {
+		s.Logger.Error("Error closing connection", "err", err)
 	}
 }
 
 // Read requests from conn and deal with them
-func (s *SocketServer) handleRequests(
-	ctx context.Context,
-	closer func(error),
-	conn io.Reader,
-	responses chan<- *types.Response,
-) {
+func (s *SocketServer) handleRequests(closeConn chan error, conn io.Reader, responses chan<- *types.Response) {
+	var count int
 	var bufReader = bufio.NewReader(conn)
 
 	defer func() {
 		// make sure to recover from any app-related panics to allow proper socket cleanup
-		if r := recover(); r != nil {
+		r := recover()
+		if r != nil {
 			const size = 64 << 10
 			buf := make([]byte, size)
 			buf = buf[:runtime.Stack(buf, false)]
-			closer(fmt.Errorf("recovered from panic: %v\n%s", r, buf))
+			err := fmt.Errorf("recovered from panic: %v\n%s", r, buf)
+			if !s.isLoggerSet {
+				fmt.Fprintln(os.Stderr, err)
+			}
+			closeConn <- err
+			s.appMtx.Unlock()
 		}
 	}()
 
 	for {
-		req := &types.Request{}
-		if err := types.ReadMessage(bufReader, req); err != nil {
-			closer(fmt.Errorf("error reading message: %w", err))
-			return
-		}
 
-		resp := s.processRequest(req)
-		select {
-		case <-ctx.Done():
-			closer(ctx.Err())
+		var req = &types.Request{}
+		err := types.ReadMessage(bufReader, req)
+		if err != nil {
+			if err == io.EOF {
+				closeConn <- err
+			} else {
+				closeConn <- fmt.Errorf("error reading message: %w", err)
+			}
 			return
-		case responses <- resp:
 		}
+		s.appMtx.Lock()
+		count++
+		s.handleRequest(req, responses)
+		s.appMtx.Unlock()
 	}
 }
 
-func (s *SocketServer) processRequest(req *types.Request) *types.Response {
+func (s *SocketServer) handleRequest(req *types.Request, responses chan<- *types.Response) {
 	switch r := req.Value.(type) {
 	case *types.Request_Echo:
-		return types.ToResponseEcho(r.Echo.Message)
+		responses <- types.ToResponseEcho(r.Echo.Message)
 	case *types.Request_Flush:
-		return types.ToResponseFlush()
+		responses <- types.ToResponseFlush()
 	case *types.Request_Info:
-		return types.ToResponseInfo(s.app.Info(*r.Info))
+		res := s.app.Info(*r.Info)
+		responses <- types.ToResponseInfo(res)
+	case *types.Request_DeliverTx:
+		res := s.app.DeliverTx(*r.DeliverTx)
+		responses <- types.ToResponseDeliverTx(res)
 	case *types.Request_CheckTx:
-		return types.ToResponseCheckTx(s.app.CheckTx(*r.CheckTx))
+		res := s.app.CheckTx(*r.CheckTx)
+		responses <- types.ToResponseCheckTx(res)
 	case *types.Request_Commit:
-		return types.ToResponseCommit(s.app.Commit())
+		res := s.app.Commit()
+		responses <- types.ToResponseCommit(res)
 	case *types.Request_Query:
-		return types.ToResponseQuery(s.app.Query(*r.Query))
+		res := s.app.Query(*r.Query)
+		responses <- types.ToResponseQuery(res)
 	case *types.Request_InitChain:
-		return types.ToResponseInitChain(s.app.InitChain(*r.InitChain))
+		res := s.app.InitChain(*r.InitChain)
+		responses <- types.ToResponseInitChain(res)
+	case *types.Request_BeginBlock:
+		res := s.app.BeginBlock(*r.BeginBlock)
+		responses <- types.ToResponseBeginBlock(res)
+	case *types.Request_EndBlock:
+		res := s.app.EndBlock(*r.EndBlock)
+		responses <- types.ToResponseEndBlock(res)
 	case *types.Request_ListSnapshots:
-		return types.ToResponseListSnapshots(s.app.ListSnapshots(*r.ListSnapshots))
+		res := s.app.ListSnapshots(*r.ListSnapshots)
+		responses <- types.ToResponseListSnapshots(res)
 	case *types.Request_OfferSnapshot:
-		return types.ToResponseOfferSnapshot(s.app.OfferSnapshot(*r.OfferSnapshot))
-	case *types.Request_PrepareProposal:
-		return types.ToResponsePrepareProposal(s.app.PrepareProposal(*r.PrepareProposal))
-	case *types.Request_ProcessProposal:
-		return types.ToResponseProcessProposal(s.app.ProcessProposal(*r.ProcessProposal))
+		res := s.app.OfferSnapshot(*r.OfferSnapshot)
+		responses <- types.ToResponseOfferSnapshot(res)
 	case *types.Request_LoadSnapshotChunk:
-		return types.ToResponseLoadSnapshotChunk(s.app.LoadSnapshotChunk(*r.LoadSnapshotChunk))
+		res := s.app.LoadSnapshotChunk(*r.LoadSnapshotChunk)
+		responses <- types.ToResponseLoadSnapshotChunk(res)
 	case *types.Request_ApplySnapshotChunk:
-		return types.ToResponseApplySnapshotChunk(s.app.ApplySnapshotChunk(*r.ApplySnapshotChunk))
-	case *types.Request_ExtendVote:
-		return types.ToResponseExtendVote(s.app.ExtendVote(*r.ExtendVote))
-	case *types.Request_VerifyVoteExtension:
-		return types.ToResponseVerifyVoteExtension(s.app.VerifyVoteExtension(*r.VerifyVoteExtension))
-	case *types.Request_FinalizeBlock:
-		return types.ToResponseFinalizeBlock(s.app.FinalizeBlock(*r.FinalizeBlock))
+		res := s.app.ApplySnapshotChunk(*r.ApplySnapshotChunk)
+		responses <- types.ToResponseApplySnapshotChunk(res)
 	default:
-		return types.ToResponseException("Unknown request")
+		responses <- types.ToResponseException("Unknown request")
 	}
 }
 
 // Pull responses from 'responses' and write them to conn.
-func (s *SocketServer) handleResponses(
-	ctx context.Context,
-	closer func(error),
-	conn io.Writer,
-	responses <-chan *types.Response,
-) {
-	bw := bufio.NewWriter(conn)
+func (s *SocketServer) handleResponses(closeConn chan error, conn io.Writer, responses <-chan *types.Response) {
+	var count int
+	var bufWriter = bufio.NewWriter(conn)
 	for {
-		select {
-		case <-ctx.Done():
-			closer(ctx.Err())
+		var res = <-responses
+		err := types.WriteMessage(res, bufWriter)
+		if err != nil {
+			closeConn <- fmt.Errorf("error writing message: %w", err)
 			return
-		case res := <-responses:
-			if err := types.WriteMessage(res, bw); err != nil {
-				closer(fmt.Errorf("error writing message: %w", err))
-				return
-			}
-			if err := bw.Flush(); err != nil {
-				closer(fmt.Errorf("error writing message: %w", err))
+		}
+		if _, ok := res.Value.(*types.Response_Flush); ok {
+			err = bufWriter.Flush()
+			if err != nil {
+				closeConn <- fmt.Errorf("error flushing write buffer: %w", err)
 				return
 			}
 		}
+		count++
 	}
 }

abci/tests/client_server_test.go

@@ -1,40 +1,27 @@
 package tests
 
 import (
-	"context"
 	"testing"
 
-	"github.com/fortytw2/leaktest"
 	"github.com/stretchr/testify/assert"
 
-	abciclientent "github.com/tendermint/tendermint/abci/client"
+	abciclient "github.com/tendermint/tendermint/abci/client"
 	"github.com/tendermint/tendermint/abci/example/kvstore"
 	abciserver "github.com/tendermint/tendermint/abci/server"
-	"github.com/tendermint/tendermint/libs/log"
 )
 
 func TestClientServerNoAddrPrefix(t *testing.T) {
-	t.Cleanup(leaktest.Check(t))
-
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-
-	const (
-		addr      = "localhost:26658"
-		transport = "socket"
-	)
+	addr := "localhost:26658"
+	transport := "socket"
 	app := kvstore.NewApplication()
-	logger := log.NewTestingLogger(t)
 
-	server, err := abciserver.NewServer(logger, addr, transport, app)
+	server, err := abciserver.NewServer(addr, transport, app)
 	assert.NoError(t, err, "expected no error on NewServer")
-	err = server.Start(ctx)
+	err = server.Start()
 	assert.NoError(t, err, "expected no error on server.Start")
-	t.Cleanup(server.Wait)
 
-	client, err := abciclientent.NewClient(logger, addr, transport, true)
+	client, err := abciclient.NewClient(addr, transport, true)
 	assert.NoError(t, err, "expected no error on NewClient")
-	err = client.Start(ctx)
+	err = client.Start()
 	assert.NoError(t, err, "expected no error on client.Start")
-	t.Cleanup(client.Wait)
 }

abci/tests/server/client.go

@@ -7,12 +7,14 @@ import (
 	"fmt"
 	mrand "math/rand"
 
-	abciclient "github.com/tendermint/tendermint/abci/client"
+	abcicli "github.com/tendermint/tendermint/abci/client"
 	"github.com/tendermint/tendermint/abci/types"
 	tmrand "github.com/tendermint/tendermint/libs/rand"
 )
 
-func InitChain(ctx context.Context, client abciclient.Client) error {
+var ctx = context.Background()
+
+func InitChain(client abcicli.Client) error {
 	total := 10
 	vals := make([]types.ValidatorUpdate, total)
 	for i := 0; i < total; i++ {
@@ -21,7 +23,7 @@ func InitChain(ctx context.Context, client abciclient.Client) error {
 		power := mrand.Int()
 		vals[i] = types.UpdateValidator(pubkey, int64(power), "")
 	}
-	_, err := client.InitChain(ctx, types.RequestInitChain{
+	_, err := client.InitChainSync(ctx, types.RequestInitChain{
 		Validators: vals,
 	})
 	if err != nil {
@@ -32,8 +34,8 @@ func InitChain(ctx context.Context, client abciclient.Client) error {
 	return nil
 }
 
-func Commit(ctx context.Context, client abciclient.Client, hashExp []byte) error {
-	res, err := client.Commit(ctx)
+func Commit(client abcicli.Client, hashExp []byte) error {
+	res, err := client.CommitSync(ctx)
 	data := res.Data
 	if err != nil {
 		fmt.Println("Failed test: Commit")
@@ -49,29 +51,27 @@ func Commit(ctx context.Context, client abciclient.Client, hashExp []byte) error
 	return nil
 }
 
-func FinalizeBlock(ctx context.Context, client abciclient.Client, txBytes [][]byte, codeExp []uint32, dataExp []byte) error {
-	res, _ := client.FinalizeBlock(ctx, types.RequestFinalizeBlock{Txs: txBytes})
-	for i, tx := range res.Txs {
-		code, data, log := tx.Code, tx.Data, tx.Log
-		if code != codeExp[i] {
-			fmt.Println("Failed test: FinalizeBlock")
-			fmt.Printf("FinalizeBlock response code was unexpected. Got %v expected %v. Log: %v\n",
-				code, codeExp, log)
-			return errors.New("FinalizeBlock error")
-		}
-		if !bytes.Equal(data, dataExp) {
-			fmt.Println("Failed test:  FinalizeBlock")
-			fmt.Printf("FinalizeBlock response data was unexpected. Got %X expected %X\n",
-				data, dataExp)
-			return errors.New("FinalizeBlock  error")
-		}
+func DeliverTx(client abcicli.Client, txBytes []byte, codeExp uint32, dataExp []byte) error {
+	res, _ := client.DeliverTxSync(ctx, types.RequestDeliverTx{Tx: txBytes})
+	code, data, log := res.Code, res.Data, res.Log
+	if code != codeExp {
+		fmt.Println("Failed test: DeliverTx")
+		fmt.Printf("DeliverTx response code was unexpected. Got %v expected %v. Log: %v\n",
+			code, codeExp, log)
+		return errors.New("deliverTx error")
 	}
-	fmt.Println("Passed test: FinalizeBlock")
+	if !bytes.Equal(data, dataExp) {
+		fmt.Println("Failed test: DeliverTx")
+		fmt.Printf("DeliverTx response data was unexpected. Got %X expected %X\n",
+			data, dataExp)
+		return errors.New("deliverTx error")
+	}
+	fmt.Println("Passed test: DeliverTx")
 	return nil
 }
 
-func CheckTx(ctx context.Context, client abciclient.Client, txBytes []byte, codeExp uint32, dataExp []byte) error {
-	res, _ := client.CheckTx(ctx, types.RequestCheckTx{Tx: txBytes})
+func CheckTx(client abcicli.Client, txBytes []byte, codeExp uint32, dataExp []byte) error {
+	res, _ := client.CheckTxSync(ctx, types.RequestCheckTx{Tx: txBytes})
 	code, data, log := res.Code, res.Data, res.Log
 	if code != codeExp {
 		fmt.Println("Failed test: CheckTx")

abci/types/application.go

@@ -4,7 +4,6 @@ import (
 	"context"
 )
 
-//go:generate ../../scripts/mockery_generate.sh Application
 // Application is an interface that enables any finite, deterministic state machine
 // to be driven by a blockchain-based replication engine via the ABCI.
 // All methods take a RequestXxx argument and return a ResponseXxx argument,
@@ -18,17 +17,11 @@ type Application interface {
 	CheckTx(RequestCheckTx) ResponseCheckTx // Validate a tx for the mempool
 
 	// Consensus Connection
-	InitChain(RequestInitChain) ResponseInitChain // Initialize blockchain w validators/other info from TendermintCore
-	PrepareProposal(RequestPrepareProposal) ResponsePrepareProposal
-	ProcessProposal(RequestProcessProposal) ResponseProcessProposal
-	// Commit the state and return the application Merkle root hash
-	Commit() ResponseCommit
-	// Create application specific vote extension
-	ExtendVote(RequestExtendVote) ResponseExtendVote
-	// Verify application's vote extension data
-	VerifyVoteExtension(RequestVerifyVoteExtension) ResponseVerifyVoteExtension
-	// Deliver the decided block with its txs to the Application
-	FinalizeBlock(RequestFinalizeBlock) ResponseFinalizeBlock
+	InitChain(RequestInitChain) ResponseInitChain    // Initialize blockchain w validators/other info from TendermintCore
+	BeginBlock(RequestBeginBlock) ResponseBeginBlock // Signals the beginning of a block
+	DeliverTx(RequestDeliverTx) ResponseDeliverTx    // Deliver a tx for full processing
+	EndBlock(RequestEndBlock) ResponseEndBlock       // Signals the end of a block, returns changes to the validator set
+	Commit() ResponseCommit                          // Commit the state and return the application Merkle root hash
 
 	// State Sync Connection
 	ListSnapshots(RequestListSnapshots) ResponseListSnapshots                // List available snapshots
@@ -42,7 +35,8 @@ type Application interface {
 
 var _ Application = (*BaseApplication)(nil)
 
-type BaseApplication struct{}
+type BaseApplication struct {
+}
 
 func NewBaseApplication() *BaseApplication {
 	return &BaseApplication{}
@@ -52,6 +46,10 @@ func (BaseApplication) Info(req RequestInfo) ResponseInfo {
 	return ResponseInfo{}
 }
 
+func (BaseApplication) DeliverTx(req RequestDeliverTx) ResponseDeliverTx {
+	return ResponseDeliverTx{Code: CodeTypeOK}
+}
+
 func (BaseApplication) CheckTx(req RequestCheckTx) ResponseCheckTx {
 	return ResponseCheckTx{Code: CodeTypeOK}
 }
@@ -60,16 +58,6 @@ func (BaseApplication) Commit() ResponseCommit {
 	return ResponseCommit{}
 }
 
-func (BaseApplication) ExtendVote(req RequestExtendVote) ResponseExtendVote {
-	return ResponseExtendVote{}
-}
-
-func (BaseApplication) VerifyVoteExtension(req RequestVerifyVoteExtension) ResponseVerifyVoteExtension {
-	return ResponseVerifyVoteExtension{
-		Result: ResponseVerifyVoteExtension_ACCEPT,
-	}
-}
-
 func (BaseApplication) Query(req RequestQuery) ResponseQuery {
 	return ResponseQuery{Code: CodeTypeOK}
 }
@@ -78,6 +66,14 @@ func (BaseApplication) InitChain(req RequestInitChain) ResponseInitChain {
 	return ResponseInitChain{}
 }
 
+func (BaseApplication) BeginBlock(req RequestBeginBlock) ResponseBeginBlock {
+	return ResponseBeginBlock{}
+}
+
+func (BaseApplication) EndBlock(req RequestEndBlock) ResponseEndBlock {
+	return ResponseEndBlock{}
+}
+
 func (BaseApplication) ListSnapshots(req RequestListSnapshots) ResponseListSnapshots {
 	return ResponseListSnapshots{}
 }
@@ -94,24 +90,6 @@ func (BaseApplication) ApplySnapshotChunk(req RequestApplySnapshotChunk) Respons
 	return ResponseApplySnapshotChunk{}
 }
 
-func (BaseApplication) PrepareProposal(req RequestPrepareProposal) ResponsePrepareProposal {
-	return ResponsePrepareProposal{}
-}
-
-func (BaseApplication) ProcessProposal(req RequestProcessProposal) ResponseProcessProposal {
-	return ResponseProcessProposal{}
-}
-
-func (BaseApplication) FinalizeBlock(req RequestFinalizeBlock) ResponseFinalizeBlock {
-	txs := make([]*ResponseDeliverTx, len(req.Txs))
-	for i := range req.Txs {
-		txs[i] = &ResponseDeliverTx{Code: CodeTypeOK}
-	}
-	return ResponseFinalizeBlock{
-		Txs: txs,
-	}
-}
-
 //-------------------------------------------------------
 
 // GRPCApplication is a GRPC wrapper for Application
@@ -136,6 +114,11 @@ func (app *GRPCApplication) Info(ctx context.Context, req *RequestInfo) (*Respon
 	return &res, nil
 }
 
+func (app *GRPCApplication) DeliverTx(ctx context.Context, req *RequestDeliverTx) (*ResponseDeliverTx, error) {
+	res := app.app.DeliverTx(*req)
+	return &res, nil
+}
+
 func (app *GRPCApplication) CheckTx(ctx context.Context, req *RequestCheckTx) (*ResponseCheckTx, error) {
 	res := app.app.CheckTx(*req)
 	return &res, nil
@@ -156,6 +139,16 @@ func (app *GRPCApplication) InitChain(ctx context.Context, req *RequestInitChain
 	return &res, nil
 }
 
+func (app *GRPCApplication) BeginBlock(ctx context.Context, req *RequestBeginBlock) (*ResponseBeginBlock, error) {
+	res := app.app.BeginBlock(*req)
+	return &res, nil
+}
+
+func (app *GRPCApplication) EndBlock(ctx context.Context, req *RequestEndBlock) (*ResponseEndBlock, error) {
+	res := app.app.EndBlock(*req)
+	return &res, nil
+}
+
 func (app *GRPCApplication) ListSnapshots(
 	ctx context.Context, req *RequestListSnapshots) (*ResponseListSnapshots, error) {
 	res := app.app.ListSnapshots(*req)
@@ -179,33 +172,3 @@ func (app *GRPCApplication) ApplySnapshotChunk(
 	res := app.app.ApplySnapshotChunk(*req)
 	return &res, nil
 }
-
-func (app *GRPCApplication) ExtendVote(
-	ctx context.Context, req *RequestExtendVote) (*ResponseExtendVote, error) {
-	res := app.app.ExtendVote(*req)
-	return &res, nil
-}
-
-func (app *GRPCApplication) VerifyVoteExtension(
-	ctx context.Context, req *RequestVerifyVoteExtension) (*ResponseVerifyVoteExtension, error) {
-	res := app.app.VerifyVoteExtension(*req)
-	return &res, nil
-}
-
-func (app *GRPCApplication) PrepareProposal(
-	ctx context.Context, req *RequestPrepareProposal) (*ResponsePrepareProposal, error) {
-	res := app.app.PrepareProposal(*req)
-	return &res, nil
-}
-
-func (app *GRPCApplication) ProcessProposal(
-	ctx context.Context, req *RequestProcessProposal) (*ResponseProcessProposal, error) {
-	res := app.app.ProcessProposal(*req)
-	return &res, nil
-}
-
-func (app *GRPCApplication) FinalizeBlock(
-	ctx context.Context, req *RequestFinalizeBlock) (*ResponseFinalizeBlock, error) {
-	res := app.app.FinalizeBlock(*req)
-	return &res, nil
-}

abci/types/client.go

@@ -1 +0,0 @@
-package types

abci/types/messages.go

@@ -4,7 +4,6 @@ import (
 	"io"
 
 	"github.com/gogo/protobuf/proto"
-
 	"github.com/tendermint/tendermint/internal/libs/protoio"
 )
 
@@ -45,6 +44,12 @@ func ToRequestInfo(req RequestInfo) *Request {
 	}
 }
 
+func ToRequestDeliverTx(req RequestDeliverTx) *Request {
+	return &Request{
+		Value: &Request_DeliverTx{&req},
+	}
+}
+
 func ToRequestCheckTx(req RequestCheckTx) *Request {
 	return &Request{
 		Value: &Request_CheckTx{&req},
@@ -69,6 +74,18 @@ func ToRequestInitChain(req RequestInitChain) *Request {
 	}
 }
 
+func ToRequestBeginBlock(req RequestBeginBlock) *Request {
+	return &Request{
+		Value: &Request_BeginBlock{&req},
+	}
+}
+
+func ToRequestEndBlock(req RequestEndBlock) *Request {
+	return &Request{
+		Value: &Request_EndBlock{&req},
+	}
+}
+
 func ToRequestListSnapshots(req RequestListSnapshots) *Request {
 	return &Request{
 		Value: &Request_ListSnapshots{&req},
@@ -93,36 +110,6 @@ func ToRequestApplySnapshotChunk(req RequestApplySnapshotChunk) *Request {
 	}
 }
 
-func ToRequestExtendVote(req RequestExtendVote) *Request {
-	return &Request{
-		Value: &Request_ExtendVote{&req},
-	}
-}
-
-func ToRequestVerifyVoteExtension(req RequestVerifyVoteExtension) *Request {
-	return &Request{
-		Value: &Request_VerifyVoteExtension{&req},
-	}
-}
-
-func ToRequestPrepareProposal(req RequestPrepareProposal) *Request {
-	return &Request{
-		Value: &Request_PrepareProposal{&req},
-	}
-}
-
-func ToRequestProcessProposal(req RequestProcessProposal) *Request {
-	return &Request{
-		Value: &Request_ProcessProposal{&req},
-	}
-}
-
-func ToRequestFinalizeBlock(req RequestFinalizeBlock) *Request {
-	return &Request{
-		Value: &Request_FinalizeBlock{&req},
-	}
-}
-
 //----------------------------------------
 
 func ToResponseException(errStr string) *Response {
@@ -148,6 +135,11 @@ func ToResponseInfo(res ResponseInfo) *Response {
 		Value: &Response_Info{&res},
 	}
 }
+func ToResponseDeliverTx(res ResponseDeliverTx) *Response {
+	return &Response{
+		Value: &Response_DeliverTx{&res},
+	}
+}
 
 func ToResponseCheckTx(res ResponseCheckTx) *Response {
 	return &Response{
@@ -173,6 +165,18 @@ func ToResponseInitChain(res ResponseInitChain) *Response {
 	}
 }
 
+func ToResponseBeginBlock(res ResponseBeginBlock) *Response {
+	return &Response{
+		Value: &Response_BeginBlock{&res},
+	}
+}
+
+func ToResponseEndBlock(res ResponseEndBlock) *Response {
+	return &Response{
+		Value: &Response_EndBlock{&res},
+	}
+}
+
 func ToResponseListSnapshots(res ResponseListSnapshots) *Response {
 	return &Response{
 		Value: &Response_ListSnapshots{&res},
@@ -196,33 +200,3 @@ func ToResponseApplySnapshotChunk(res ResponseApplySnapshotChunk) *Response {
 		Value: &Response_ApplySnapshotChunk{&res},
 	}
 }
-
-func ToResponseExtendVote(res ResponseExtendVote) *Response {
-	return &Response{
-		Value: &Response_ExtendVote{&res},
-	}
-}
-
-func ToResponseVerifyVoteExtension(res ResponseVerifyVoteExtension) *Response {
-	return &Response{
-		Value: &Response_VerifyVoteExtension{&res},
-	}
-}
-
-func ToResponsePrepareProposal(res ResponsePrepareProposal) *Response {
-	return &Response{
-		Value: &Response_PrepareProposal{&res},
-	}
-}
-
-func ToResponseProcessProposal(res ResponseProcessProposal) *Response {
-	return &Response{
-		Value: &Response_ProcessProposal{&res},
-	}
-}
-
-func ToResponseFinalizeBlock(res ResponseFinalizeBlock) *Response {
-	return &Response{
-		Value: &Response_FinalizeBlock{&res},
-	}
-}

abci/types/messages_test.go

@@ -14,7 +14,7 @@ import (
 
 func TestMarshalJSON(t *testing.T) {
 	b, err := json.Marshal(&ResponseDeliverTx{})
-	assert.NoError(t, err)
+	assert.Nil(t, err)
 	// include empty fields.
 	assert.True(t, strings.Contains(string(b), "code"))
 	r1 := ResponseCheckTx{
@@ -31,11 +31,11 @@ func TestMarshalJSON(t *testing.T) {
 		},
 	}
 	b, err = json.Marshal(&r1)
-	assert.NoError(t, err)
+	assert.Nil(t, err)
 
 	var r2 ResponseCheckTx
 	err = json.Unmarshal(b, &r2)
-	assert.NoError(t, err)
+	assert.Nil(t, err)
 	assert.Equal(t, r1, r2)
 }
 
@@ -49,11 +49,11 @@ func TestWriteReadMessageSimple(t *testing.T) {
 	for _, c := range cases {
 		buf := new(bytes.Buffer)
 		err := WriteMessage(c, buf)
-		assert.NoError(t, err)
+		assert.Nil(t, err)
 
 		msg := new(RequestEcho)
 		err = ReadMessage(buf, msg)
-		assert.NoError(t, err)
+		assert.Nil(t, err)
 
 		assert.True(t, proto.Equal(c, msg))
 	}
@@ -71,11 +71,11 @@ func TestWriteReadMessage(t *testing.T) {
 	for _, c := range cases {
 		buf := new(bytes.Buffer)
 		err := WriteMessage(c, buf)
-		assert.NoError(t, err)
+		assert.Nil(t, err)
 
 		msg := new(tmproto.Header)
 		err = ReadMessage(buf, msg)
-		assert.NoError(t, err)
+		assert.Nil(t, err)
 
 		assert.True(t, proto.Equal(c, msg))
 	}
@@ -103,11 +103,11 @@ func TestWriteReadMessage2(t *testing.T) {
 	for _, c := range cases {
 		buf := new(bytes.Buffer)
 		err := WriteMessage(c, buf)
-		assert.NoError(t, err)
+		assert.Nil(t, err)
 
 		msg := new(ResponseCheckTx)
 		err = ReadMessage(buf, msg)
-		assert.NoError(t, err)
+		assert.Nil(t, err)
 
 		assert.True(t, proto.Equal(c, msg))
 	}

abci/types/mocks/application.go

@@ -1,209 +0,0 @@
-// Code generated by mockery. DO NOT EDIT.
-
-package mocks
-
-import (
-	mock "github.com/stretchr/testify/mock"
-	types "github.com/tendermint/tendermint/abci/types"
-)
-
-// Application is an autogenerated mock type for the Application type
-type Application struct {
-	mock.Mock
-}
-
-// ApplySnapshotChunk provides a mock function with given fields: _a0
-func (_m *Application) ApplySnapshotChunk(_a0 types.RequestApplySnapshotChunk) types.ResponseApplySnapshotChunk {
-	ret := _m.Called(_a0)
-
-	var r0 types.ResponseApplySnapshotChunk
-	if rf, ok := ret.Get(0).(func(types.RequestApplySnapshotChunk) types.ResponseApplySnapshotChunk); ok {
-		r0 = rf(_a0)
-	} else {
-		r0 = ret.Get(0).(types.ResponseApplySnapshotChunk)
-	}
-
-	return r0
-}
-
-// CheckTx provides a mock function with given fields: _a0
-func (_m *Application) CheckTx(_a0 types.RequestCheckTx) types.ResponseCheckTx {
-	ret := _m.Called(_a0)
-
-	var r0 types.ResponseCheckTx
-	if rf, ok := ret.Get(0).(func(types.RequestCheckTx) types.ResponseCheckTx); ok {
-		r0 = rf(_a0)
-	} else {
-		r0 = ret.Get(0).(types.ResponseCheckTx)
-	}
-
-	return r0
-}
-
-// Commit provides a mock function with given fields:
-func (_m *Application) Commit() types.ResponseCommit {
-	ret := _m.Called()
-
-	var r0 types.ResponseCommit
-	if rf, ok := ret.Get(0).(func() types.ResponseCommit); ok {
-		r0 = rf()
-	} else {
-		r0 = ret.Get(0).(types.ResponseCommit)
-	}
-
-	return r0
-}
-
-// ExtendVote provides a mock function with given fields: _a0
-func (_m *Application) ExtendVote(_a0 types.RequestExtendVote) types.ResponseExtendVote {
-	ret := _m.Called(_a0)
-
-	var r0 types.ResponseExtendVote
-	if rf, ok := ret.Get(0).(func(types.RequestExtendVote) types.ResponseExtendVote); ok {
-		r0 = rf(_a0)
-	} else {
-		r0 = ret.Get(0).(types.ResponseExtendVote)
-	}
-
-	return r0
-}
-
-// FinalizeBlock provides a mock function with given fields: _a0
-func (_m *Application) FinalizeBlock(_a0 types.RequestFinalizeBlock) types.ResponseFinalizeBlock {
-	ret := _m.Called(_a0)
-
-	var r0 types.ResponseFinalizeBlock
-	if rf, ok := ret.Get(0).(func(types.RequestFinalizeBlock) types.ResponseFinalizeBlock); ok {
-		r0 = rf(_a0)
-	} else {
-		r0 = ret.Get(0).(types.ResponseFinalizeBlock)
-	}
-
-	return r0
-}
-
-// Info provides a mock function with given fields: _a0
-func (_m *Application) Info(_a0 types.RequestInfo) types.ResponseInfo {
-	ret := _m.Called(_a0)
-
-	var r0 types.ResponseInfo
-	if rf, ok := ret.Get(0).(func(types.RequestInfo) types.ResponseInfo); ok {
-		r0 = rf(_a0)
-	} else {
-		r0 = ret.Get(0).(types.ResponseInfo)
-	}
-
-	return r0
-}
-
-// InitChain provides a mock function with given fields: _a0
-func (_m *Application) InitChain(_a0 types.RequestInitChain) types.ResponseInitChain {
-	ret := _m.Called(_a0)
-
-	var r0 types.ResponseInitChain
-	if rf, ok := ret.Get(0).(func(types.RequestInitChain) types.ResponseInitChain); ok {
-		r0 = rf(_a0)
-	} else {
-		r0 = ret.Get(0).(types.ResponseInitChain)
-	}
-
-	return r0
-}
-
-// ListSnapshots provides a mock function with given fields: _a0
-func (_m *Application) ListSnapshots(_a0 types.RequestListSnapshots) types.ResponseListSnapshots {
-	ret := _m.Called(_a0)
-
-	var r0 types.ResponseListSnapshots
-	if rf, ok := ret.Get(0).(func(types.RequestListSnapshots) types.ResponseListSnapshots); ok {
-		r0 = rf(_a0)
-	} else {
-		r0 = ret.Get(0).(types.ResponseListSnapshots)
-	}
-
-	return r0
-}
-
-// LoadSnapshotChunk provides a mock function with given fields: _a0
-func (_m *Application) LoadSnapshotChunk(_a0 types.RequestLoadSnapshotChunk) types.ResponseLoadSnapshotChunk {
-	ret := _m.Called(_a0)
-
-	var r0 types.ResponseLoadSnapshotChunk
-	if rf, ok := ret.Get(0).(func(types.RequestLoadSnapshotChunk) types.ResponseLoadSnapshotChunk); ok {
-		r0 = rf(_a0)
-	} else {
-		r0 = ret.Get(0).(types.ResponseLoadSnapshotChunk)
-	}
-
-	return r0
-}
-
-// OfferSnapshot provides a mock function with given fields: _a0
-func (_m *Application) OfferSnapshot(_a0 types.RequestOfferSnapshot) types.ResponseOfferSnapshot {
-	ret := _m.Called(_a0)
-
-	var r0 types.ResponseOfferSnapshot
-	if rf, ok := ret.Get(0).(func(types.RequestOfferSnapshot) types.ResponseOfferSnapshot); ok {
-		r0 = rf(_a0)
-	} else {
-		r0 = ret.Get(0).(types.ResponseOfferSnapshot)
-	}
-
-	return r0
-}
-
-// PrepareProposal provides a mock function with given fields: _a0
-func (_m *Application) PrepareProposal(_a0 types.RequestPrepareProposal) types.ResponsePrepareProposal {
-	ret := _m.Called(_a0)
-
-	var r0 types.ResponsePrepareProposal
-	if rf, ok := ret.Get(0).(func(types.RequestPrepareProposal) types.ResponsePrepareProposal); ok {
-		r0 = rf(_a0)
-	} else {
-		r0 = ret.Get(0).(types.ResponsePrepareProposal)
-	}
-
-	return r0
-}
-
-// ProcessProposal provides a mock function with given fields: _a0
-func (_m *Application) ProcessProposal(_a0 types.RequestProcessProposal) types.ResponseProcessProposal {
-	ret := _m.Called(_a0)
-
-	var r0 types.ResponseProcessProposal
-	if rf, ok := ret.Get(0).(func(types.RequestProcessProposal) types.ResponseProcessProposal); ok {
-		r0 = rf(_a0)
-	} else {
-		r0 = ret.Get(0).(types.ResponseProcessProposal)
-	}
-
-	return r0
-}
-
-// Query provides a mock function with given fields: _a0
-func (_m *Application) Query(_a0 types.RequestQuery) types.ResponseQuery {
-	ret := _m.Called(_a0)
-
-	var r0 types.ResponseQuery
-	if rf, ok := ret.Get(0).(func(types.RequestQuery) types.ResponseQuery); ok {
-		r0 = rf(_a0)
-	} else {
-		r0 = ret.Get(0).(types.ResponseQuery)
-	}
-
-	return r0
-}
-
-// VerifyVoteExtension provides a mock function with given fields: _a0
-func (_m *Application) VerifyVoteExtension(_a0 types.RequestVerifyVoteExtension) types.ResponseVerifyVoteExtension {
-	ret := _m.Called(_a0)
-
-	var r0 types.ResponseVerifyVoteExtension
-	if rf, ok := ret.Get(0).(func(types.RequestVerifyVoteExtension) types.ResponseVerifyVoteExtension); ok {
-		r0 = rf(_a0)
-	} else {
-		r0 = ret.Get(0).(types.ResponseVerifyVoteExtension)
-	}
-
-	return r0
-}

abci/types/mocks/base.go

@@ -1,189 +0,0 @@
-package mocks
-
-import (
-	types "github.com/tendermint/tendermint/abci/types"
-)
-
-// BaseMock provides a wrapper around the generated Application mock and a BaseApplication.
-// BaseMock first tries to use the mock's implementation of the method.
-// If no functionality was provided for the mock by the user, BaseMock dispatches
-// to the BaseApplication and uses its functionality.
-// BaseMock allows users to provide mocked functionality for only the methods that matter
-// for their test while avoiding a panic if the code calls Application methods that are
-// not relevant to the test.
-type BaseMock struct {
-	base *types.BaseApplication
-	*Application
-}
-
-func NewBaseMock() BaseMock {
-	return BaseMock{
-		base:        types.NewBaseApplication(),
-		Application: new(Application),
-	}
-}
-
-// Info/Query Connection
-// Return application info
-func (m BaseMock) Info(input types.RequestInfo) types.ResponseInfo {
-	var ret types.ResponseInfo
-	defer func() {
-		if r := recover(); r != nil {
-			ret = m.base.Info(input)
-		}
-	}()
-	ret = m.Application.Info(input)
-	return ret
-}
-
-func (m BaseMock) Query(input types.RequestQuery) types.ResponseQuery {
-	var ret types.ResponseQuery
-	defer func() {
-		if r := recover(); r != nil {
-			ret = m.base.Query(input)
-		}
-	}()
-	ret = m.Application.Query(input)
-	return ret
-}
-
-// Mempool Connection
-// Validate a tx for the mempool
-func (m BaseMock) CheckTx(input types.RequestCheckTx) types.ResponseCheckTx {
-	var ret types.ResponseCheckTx
-	defer func() {
-		if r := recover(); r != nil {
-			ret = m.base.CheckTx(input)
-		}
-	}()
-	ret = m.Application.CheckTx(input)
-	return ret
-}
-
-// Consensus Connection
-// Initialize blockchain w validators/other info from TendermintCore
-func (m BaseMock) InitChain(input types.RequestInitChain) types.ResponseInitChain {
-	var ret types.ResponseInitChain
-	defer func() {
-		if r := recover(); r != nil {
-			ret = m.base.InitChain(input)
-		}
-	}()
-	ret = m.Application.InitChain(input)
-	return ret
-}
-
-func (m BaseMock) PrepareProposal(input types.RequestPrepareProposal) types.ResponsePrepareProposal {
-	var ret types.ResponsePrepareProposal
-	defer func() {
-		if r := recover(); r != nil {
-			ret = m.base.PrepareProposal(input)
-		}
-	}()
-	ret = m.Application.PrepareProposal(input)
-	return ret
-}
-
-func (m BaseMock) ProcessProposal(input types.RequestProcessProposal) types.ResponseProcessProposal {
-	var ret types.ResponseProcessProposal
-	defer func() {
-		if r := recover(); r != nil {
-			ret = m.base.ProcessProposal(input)
-		}
-	}()
-	ret = m.Application.ProcessProposal(input)
-	return ret
-}
-
-// Commit the state and return the application Merkle root hash
-func (m BaseMock) Commit() types.ResponseCommit {
-	var ret types.ResponseCommit
-	defer func() {
-		if r := recover(); r != nil {
-			ret = m.base.Commit()
-		}
-	}()
-	ret = m.Application.Commit()
-	return ret
-}
-
-// Create application specific vote extension
-func (m BaseMock) ExtendVote(input types.RequestExtendVote) types.ResponseExtendVote {
-	var ret types.ResponseExtendVote
-	defer func() {
-		if r := recover(); r != nil {
-			ret = m.base.ExtendVote(input)
-		}
-	}()
-	ret = m.Application.ExtendVote(input)
-	return ret
-}
-
-// Verify application's vote extension data
-func (m BaseMock) VerifyVoteExtension(input types.RequestVerifyVoteExtension) types.ResponseVerifyVoteExtension {
-	var ret types.ResponseVerifyVoteExtension
-	defer func() {
-		if r := recover(); r != nil {
-			ret = m.base.VerifyVoteExtension(input)
-		}
-	}()
-	ret = m.Application.VerifyVoteExtension(input)
-	return ret
-}
-
-// State Sync Connection
-// List available snapshots
-func (m BaseMock) ListSnapshots(input types.RequestListSnapshots) types.ResponseListSnapshots {
-	var ret types.ResponseListSnapshots
-	defer func() {
-		if r := recover(); r != nil {
-			ret = m.base.ListSnapshots(input)
-		}
-	}()
-	ret = m.Application.ListSnapshots(input)
-	return ret
-}
-
-func (m BaseMock) OfferSnapshot(input types.RequestOfferSnapshot) types.ResponseOfferSnapshot {
-	var ret types.ResponseOfferSnapshot
-	defer func() {
-		if r := recover(); r != nil {
-			ret = m.base.OfferSnapshot(input)
-		}
-	}()
-	ret = m.Application.OfferSnapshot(input)
-	return ret
-}
-
-func (m BaseMock) LoadSnapshotChunk(input types.RequestLoadSnapshotChunk) types.ResponseLoadSnapshotChunk {
-	var ret types.ResponseLoadSnapshotChunk
-	defer func() {
-		if r := recover(); r != nil {
-			ret = m.base.LoadSnapshotChunk(input)
-		}
-	}()
-	ret = m.Application.LoadSnapshotChunk(input)
-	return ret
-}
-
-func (m BaseMock) ApplySnapshotChunk(input types.RequestApplySnapshotChunk) types.ResponseApplySnapshotChunk {
-	var ret types.ResponseApplySnapshotChunk
-	defer func() {
-		if r := recover(); r != nil {
-			ret = m.base.ApplySnapshotChunk(input)
-		}
-	}()
-	ret = m.Application.ApplySnapshotChunk(input)
-	return ret
-}
-
-func (m BaseMock) FinalizeBlock(input types.RequestFinalizeBlock) types.ResponseFinalizeBlock {
-	var ret types.ResponseFinalizeBlock
-	defer func() {
-		if r := recover(); r != nil {
-			ret = m.base.FinalizeBlock(input)
-		}
-	}()
-	ret = m.Application.FinalizeBlock(input)
-	return ret
-}

abci/types/pubkey.go

@@ -4,7 +4,7 @@ import (
 	fmt "fmt"
 
 	"github.com/tendermint/tendermint/crypto/ed25519"
-	"github.com/tendermint/tendermint/crypto/encoding"
+	cryptoenc "github.com/tendermint/tendermint/crypto/encoding"
 	"github.com/tendermint/tendermint/crypto/secp256k1"
 	"github.com/tendermint/tendermint/crypto/sr25519"
 )
@@ -12,7 +12,7 @@ import (
 func Ed25519ValidatorUpdate(pk []byte, power int64) ValidatorUpdate {
 	pke := ed25519.PubKey(pk)
 
-	pkp, err := encoding.PubKeyToProto(pke)
+	pkp, err := cryptoenc.PubKeyToProto(pke)
 	if err != nil {
 		panic(err)
 	}
@@ -29,7 +29,7 @@ func UpdateValidator(pk []byte, power int64, keyType string) ValidatorUpdate {
 		return Ed25519ValidatorUpdate(pk, power)
 	case secp256k1.KeyType:
 		pke := secp256k1.PubKey(pk)
-		pkp, err := encoding.PubKeyToProto(pke)
+		pkp, err := cryptoenc.PubKeyToProto(pke)
 		if err != nil {
 			panic(err)
 		}
@@ -39,7 +39,7 @@ func UpdateValidator(pk []byte, power int64, keyType string) ValidatorUpdate {
 		}
 	case sr25519.KeyType:
 		pke := sr25519.PubKey(pk)
-		pkp, err := encoding.PubKeyToProto(pke)
+		pkp, err := cryptoenc.PubKeyToProto(pke)
 		if err != nil {
 			panic(err)
 		}

abci/types/result.go

@@ -5,8 +5,6 @@ import (
 	"encoding/json"
 
 	"github.com/gogo/protobuf/jsonpb"
-
-	types "github.com/tendermint/tendermint/proto/tendermint/types"
 )
 
 const (
@@ -43,21 +41,6 @@ func (r ResponseQuery) IsErr() bool {
 	return r.Code != CodeTypeOK
 }
 
-// IsUnknown returns true if Code is Unknown
-func (r ResponseVerifyVoteExtension) IsUnknown() bool {
-	return r.Result == ResponseVerifyVoteExtension_UNKNOWN
-}
-
-// IsOK returns true if Code is OK
-func (r ResponseVerifyVoteExtension) IsOK() bool {
-	return r.Result == ResponseVerifyVoteExtension_ACCEPT
-}
-
-// IsErr returns true if Code is something other than OK.
-func (r ResponseVerifyVoteExtension) IsErr() bool {
-	return r.Result != ResponseVerifyVoteExtension_ACCEPT
-}
-
 //---------------------------------------------------------------------------
 // override JSON marshaling so we emit defaults (ie. disable omitempty)
 
@@ -135,25 +118,3 @@ var _ jsonRoundTripper = (*ResponseDeliverTx)(nil)
 var _ jsonRoundTripper = (*ResponseCheckTx)(nil)
 
 var _ jsonRoundTripper = (*EventAttribute)(nil)
-
-// -----------------------------------------------
-// construct Result data
-
-func RespondExtendVote(appDataToSign, appDataSelfAuthenticating []byte) ResponseExtendVote {
-	return ResponseExtendVote{
-		VoteExtension: &types.VoteExtension{
-			AppDataToSign:             appDataToSign,
-			AppDataSelfAuthenticating: appDataSelfAuthenticating,
-		},
-	}
-}
-
-func RespondVerifyVoteExtension(ok bool) ResponseVerifyVoteExtension {
-	result := ResponseVerifyVoteExtension_REJECT
-	if ok {
-		result = ResponseVerifyVoteExtension_ACCEPT
-	}
-	return ResponseVerifyVoteExtension{
-		Result: result,
-	}
-}

abci/version/version.go

@@ -0,0 +1,9 @@
+package version
+
+import (
+	"github.com/tendermint/tendermint/version"
+)
+
+// TODO: eliminate this after some version refactor
+
+const Version = version.ABCIVersion

buf.gen.yaml

@@ -1,4 +1,5 @@
-# The version of the generation template (required).
+# The version of the generation template.
+# Required.
 # The only currently-valid value is v1beta1.
 version: v1beta1
 
@@ -6,9 +7,7 @@ version: v1beta1
 plugins:
   # The name of the plugin.
   - name: gogofaster
-    # The directory where the generated proto output will be written.
-    # The directory is relative to where the generation tool was run.
+    # The the relative output directory.
     out: proto
-    # Set options to assign import paths to the well-known types
-    # and to enable service generation.
+    # Any options to provide to the plugin.
     opt: Mgoogle/protobuf/timestamp.proto=github.com/gogo/protobuf/types,Mgoogle/protobuf/duration.proto=github.com/golang/protobuf/ptypes/duration,plugins=grpc,paths=source_relative

cmd/priv_val_server/main.go

@@ -6,11 +6,10 @@ import (
 	"crypto/x509"
 	"flag"
 	"fmt"
+	"io/ioutil"
 	"net"
 	"net/http"
 	"os"
-	"os/signal"
-	"syscall"
 	"time"
 
 	grpc_prometheus "github.com/grpc-ecosystem/go-grpc-prometheus"
@@ -21,6 +20,7 @@ import (
 
 	"github.com/tendermint/tendermint/libs/log"
 	tmnet "github.com/tendermint/tendermint/libs/net"
+	tmos "github.com/tendermint/tendermint/libs/os"
 	"github.com/tendermint/tendermint/privval"
 	grpcprivval "github.com/tendermint/tendermint/privval/grpc"
 	privvalproto "github.com/tendermint/tendermint/proto/tendermint/privval"
@@ -45,19 +45,12 @@ func main() {
 		keyFile          = flag.String("keyfile", "", "absolute path to server key")
 		rootCA           = flag.String("rootcafile", "", "absolute path to root CA")
 		prometheusAddr   = flag.String("prometheus-addr", "", "address for prometheus endpoint (host:port)")
+
+		logger = log.MustNewDefaultLogger(log.LogFormatPlain, log.LogLevelInfo, false).
+			With("module", "priv_val")
 	)
 	flag.Parse()
 
-	logger, err := log.NewDefaultLogger(log.LogFormatPlain, log.LogLevelInfo)
-	if err != nil {
-		fmt.Fprintf(os.Stderr, "failed to construct logger: %v", err)
-		os.Exit(1)
-	}
-	logger = logger.With("module", "priv_val")
-
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-
 	logger.Info(
 		"Starting private validator",
 		"addr", *addr,
@@ -85,7 +78,7 @@ func main() {
 		}
 
 		certPool := x509.NewCertPool()
-		bs, err := os.ReadFile(*rootCA)
+		bs, err := ioutil.ReadFile(*rootCA)
 		if err != nil {
 			fmt.Fprintf(os.Stderr, "failed to read client ca cert: %s", err)
 			os.Exit(1)
@@ -138,10 +131,9 @@ func main() {
 		os.Exit(1)
 	}
 
-	opctx, opcancel := signal.NotifyContext(ctx, os.Interrupt, syscall.SIGTERM)
-	defer opcancel()
-	go func() {
-		<-opctx.Done()
+	// Stop upon receiving SIGTERM or CTRL-C.
+	tmos.TrapSignal(logger, func() {
+		logger.Debug("SignerServer: calling Close")
 		if *prometheusAddr != "" {
 			ctx, cancel := context.WithTimeout(context.Background(), 1*time.Second)
 			defer cancel()
@@ -151,7 +143,7 @@ func main() {
 			}
 		}
 		s.GracefulStop()
-	}()
+	})
 
 	// Run forever.
 	select {}

cmd/tendermint/commands/completion.go

@@ -1,46 +0,0 @@
-package commands
-
-import (
-	"fmt"
-
-	"github.com/spf13/cobra"
-)
-
-// NewCompletionCmd returns a cobra.Command that generates bash and zsh
-// completion scripts for the given root command. If hidden is true, the
-// command will not show up in the root command's list of available commands.
-func NewCompletionCmd(rootCmd *cobra.Command, hidden bool) *cobra.Command {
-	flagZsh := "zsh"
-	cmd := &cobra.Command{
-		Use:   "completion",
-		Short: "Generate shell completion scripts",
-		Long: fmt.Sprintf(`Generate Bash and Zsh completion scripts and print them to STDOUT.
-
-Once saved to file, a completion script can be loaded in the shell's
-current session as shown:
-
-   $ . <(%s completion)
-
-To configure your bash shell to load completions for each session add to
-your $HOME/.bashrc or $HOME/.profile the following instruction:
-
-   . <(%s completion)
-`, rootCmd.Use, rootCmd.Use),
-		RunE: func(cmd *cobra.Command, _ []string) error {
-			zsh, err := cmd.Flags().GetBool(flagZsh)
-			if err != nil {
-				return err
-			}
-			if zsh {
-				return rootCmd.GenZshCompletion(cmd.OutOrStdout())
-			}
-			return rootCmd.GenBashCompletion(cmd.OutOrStdout())
-		},
-		Hidden: hidden,
-		Args:   cobra.NoArgs,
-	}
-
-	cmd.Flags().Bool(flagZsh, false, "Generate Zsh completion script")
-
-	return cmd
-}

cmd/tendermint/commands/debug/debug.go

@@ -2,29 +2,38 @@ package debug
 
 import (
 	"github.com/spf13/cobra"
+
 	"github.com/tendermint/tendermint/libs/log"
 )
 
-const (
+var (
+	nodeRPCAddr string
+	profAddr    string
+	frequency   uint
+
 	flagNodeRPCAddr = "rpc-laddr"
 	flagProfAddr    = "pprof-laddr"
 	flagFrequency   = "frequency"
+
+	logger = log.MustNewDefaultLogger(log.LogFormatPlain, log.LogLevelInfo, false)
 )
 
-func GetDebugCommand(logger log.Logger) *cobra.Command {
-	cmd := &cobra.Command{
-		Use:   "debug",
-		Short: "A utility to kill or watch a Tendermint process while aggregating debugging data",
-	}
-	cmd.PersistentFlags().SortFlags = true
-	cmd.PersistentFlags().String(
+// DebugCmd defines the root command containing subcommands that assist in
+// debugging running Tendermint processes.
+var DebugCmd = &cobra.Command{
+	Use:   "debug",
+	Short: "A utility to kill or watch a Tendermint process while aggregating debugging data",
+}
+
+func init() {
+	DebugCmd.PersistentFlags().SortFlags = true
+	DebugCmd.PersistentFlags().StringVar(
+		&nodeRPCAddr,
 		flagNodeRPCAddr,
 		"tcp://localhost:26657",
-		"the Tendermint node's RPC address <host>:<port>)",
+		"the Tendermint node's RPC address (<host>:<port>)",
 	)
 
-	cmd.AddCommand(getKillCmd(logger))
-	cmd.AddCommand(getDumpCmd(logger))
-	return cmd
-
+	DebugCmd.AddCommand(killCmd)
+	DebugCmd.AddCommand(dumpCmd)
 }

cmd/tendermint/commands/debug/dump.go

@@ -1,9 +1,9 @@
 package debug
 
 import (
-	"context"
 	"errors"
 	"fmt"
+	"io/ioutil"
 	"os"
 	"path/filepath"
 	"time"
@@ -11,104 +11,78 @@ import (
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
 
-	"github.com/tendermint/tendermint/config"
+	cfg "github.com/tendermint/tendermint/config"
 	"github.com/tendermint/tendermint/libs/cli"
-	"github.com/tendermint/tendermint/libs/log"
 	rpchttp "github.com/tendermint/tendermint/rpc/client/http"
 )
 
-func getDumpCmd(logger log.Logger) *cobra.Command {
-	cmd := &cobra.Command{
-		Use:   "dump [output-directory]",
-		Short: "Continuously poll a Tendermint process and dump debugging data into a single location",
-		Long: `Continuously poll a Tendermint process and dump debugging data into a single
+var dumpCmd = &cobra.Command{
+	Use:   "dump [output-directory]",
+	Short: "Continuously poll a Tendermint process and dump debugging data into a single location",
+	Long: `Continuously poll a Tendermint process and dump debugging data into a single
 location at a specified frequency. At each frequency interval, an archived and compressed
 file will contain node debugging information including the goroutine and heap profiles
 if enabled.`,
-		Args: cobra.ExactArgs(1),
-		RunE: func(cmd *cobra.Command, args []string) error {
-			outDir := args[0]
-			if outDir == "" {
-				return errors.New("invalid output directory")
-			}
-			frequency, err := cmd.Flags().GetUint(flagFrequency)
-			if err != nil {
-				return fmt.Errorf("flag %q not defined: %w", flagFrequency, err)
-			}
+	Args: cobra.ExactArgs(1),
+	RunE: dumpCmdHandler,
+}
 
-			if frequency == 0 {
-				return errors.New("frequency must be positive")
-			}
-
-			nodeRPCAddr, err := cmd.Flags().GetString(flagNodeRPCAddr)
-			if err != nil {
-				return fmt.Errorf("flag %q not defined: %w", flagNodeRPCAddr, err)
-			}
-
-			profAddr, err := cmd.Flags().GetString(flagProfAddr)
-			if err != nil {
-				return fmt.Errorf("flag %q not defined: %w", flagProfAddr, err)
-			}
-
-			if _, err := os.Stat(outDir); os.IsNotExist(err) {
-				if err := os.Mkdir(outDir, os.ModePerm); err != nil {
-					return fmt.Errorf("failed to create output directory: %w", err)
-				}
-			}
-
-			rpc, err := rpchttp.New(nodeRPCAddr)
-			if err != nil {
-				return fmt.Errorf("failed to create new http client: %w", err)
-			}
-
-			ctx := cmd.Context()
-
-			home := viper.GetString(cli.HomeFlag)
-			conf := config.DefaultConfig()
-			conf = conf.SetRoot(home)
-			config.EnsureRoot(conf.RootDir)
-
-			dumpArgs := dumpDebugDataArgs{
-				conf:     conf,
-				outDir:   outDir,
-				profAddr: profAddr,
-			}
-			dumpDebugData(ctx, logger, rpc, dumpArgs)
-
-			ticker := time.NewTicker(time.Duration(frequency) * time.Second)
-			for range ticker.C {
-				dumpDebugData(ctx, logger, rpc, dumpArgs)
-			}
-
-			return nil
-		},
-	}
-	cmd.Flags().Uint(
+func init() {
+	dumpCmd.Flags().UintVar(
+		&frequency,
 		flagFrequency,
 		30,
 		"the frequency (seconds) in which to poll, aggregate and dump Tendermint debug data",
 	)
 
-	cmd.Flags().String(
+	dumpCmd.Flags().StringVar(
+		&profAddr,
 		flagProfAddr,
 		"",
 		"the profiling server address (<host>:<port>)",
 	)
-
-	return cmd
-
 }
 
-type dumpDebugDataArgs struct {
-	conf     *config.Config
-	outDir   string
-	profAddr string
+func dumpCmdHandler(_ *cobra.Command, args []string) error {
+	outDir := args[0]
+	if outDir == "" {
+		return errors.New("invalid output directory")
+	}
+
+	if frequency == 0 {
+		return errors.New("frequency must be positive")
+	}
+
+	if _, err := os.Stat(outDir); os.IsNotExist(err) {
+		if err := os.Mkdir(outDir, os.ModePerm); err != nil {
+			return fmt.Errorf("failed to create output directory: %w", err)
+		}
+	}
+
+	rpc, err := rpchttp.New(nodeRPCAddr)
+	if err != nil {
+		return fmt.Errorf("failed to create new http client: %w", err)
+	}
+
+	home := viper.GetString(cli.HomeFlag)
+	conf := cfg.DefaultConfig()
+	conf = conf.SetRoot(home)
+	cfg.EnsureRoot(conf.RootDir)
+
+	dumpDebugData(outDir, conf, rpc)
+
+	ticker := time.NewTicker(time.Duration(frequency) * time.Second)
+	for range ticker.C {
+		dumpDebugData(outDir, conf, rpc)
+	}
+
+	return nil
 }
 
-func dumpDebugData(ctx context.Context, logger log.Logger, rpc *rpchttp.HTTP, args dumpDebugDataArgs) {
+func dumpDebugData(outDir string, conf *cfg.Config, rpc *rpchttp.HTTP) {
 	start := time.Now().UTC()
 
-	tmpDir, err := os.MkdirTemp(args.outDir, "tendermint_debug_tmp")
+	tmpDir, err := ioutil.TempDir(outDir, "tendermint_debug_tmp")
 	if err != nil {
 		logger.Error("failed to create temporary directory", "dir", tmpDir, "error", err)
 		return
@@ -116,44 +90,44 @@ func dumpDebugData(ctx context.Context, logger log.Logger, rpc *rpchttp.HTTP, ar
 	defer os.RemoveAll(tmpDir)
 
 	logger.Info("getting node status...")
-	if err := dumpStatus(ctx, rpc, tmpDir, "status.json"); err != nil {
+	if err := dumpStatus(rpc, tmpDir, "status.json"); err != nil {
 		logger.Error("failed to dump node status", "error", err)
 		return
 	}
 
 	logger.Info("getting node network info...")
-	if err := dumpNetInfo(ctx, rpc, tmpDir, "net_info.json"); err != nil {
+	if err := dumpNetInfo(rpc, tmpDir, "net_info.json"); err != nil {
 		logger.Error("failed to dump node network info", "error", err)
 		return
 	}
 
 	logger.Info("getting node consensus state...")
-	if err := dumpConsensusState(ctx, rpc, tmpDir, "consensus_state.json"); err != nil {
+	if err := dumpConsensusState(rpc, tmpDir, "consensus_state.json"); err != nil {
 		logger.Error("failed to dump node consensus state", "error", err)
 		return
 	}
 
 	logger.Info("copying node WAL...")
-	if err := copyWAL(args.conf, tmpDir); err != nil {
+	if err := copyWAL(conf, tmpDir); err != nil {
 		logger.Error("failed to copy node WAL", "error", err)
 		return
 	}
 
-	if args.profAddr != "" {
+	if profAddr != "" {
 		logger.Info("getting node goroutine profile...")
-		if err := dumpProfile(tmpDir, args.profAddr, "goroutine", 2); err != nil {
+		if err := dumpProfile(tmpDir, profAddr, "goroutine", 2); err != nil {
 			logger.Error("failed to dump goroutine profile", "error", err)
 			return
 		}
 
 		logger.Info("getting node heap profile...")
-		if err := dumpProfile(tmpDir, args.profAddr, "heap", 2); err != nil {
+		if err := dumpProfile(tmpDir, profAddr, "heap", 2); err != nil {
 			logger.Error("failed to dump heap profile", "error", err)
 			return
 		}
 	}
 
-	outFile := filepath.Join(args.outDir, fmt.Sprintf("%s.zip", start.Format(time.RFC3339)))
+	outFile := filepath.Join(outDir, fmt.Sprintf("%s.zip", start.Format(time.RFC3339)))
 	if err := zipDir(tmpDir, outFile); err != nil {
 		logger.Error("failed to create and compress archive", "file", outFile, "error", err)
 	}

cmd/tendermint/commands/debug/io.go

@@ -5,6 +5,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
+	"io/ioutil"
 	"os"
 	"path"
 	"path/filepath"
@@ -110,5 +111,5 @@ func writeStateJSONToFile(state interface{}, dir, filename string) error {
 		return fmt.Errorf("failed to encode state dump: %w", err)
 	}
 
-	return os.WriteFile(path.Join(dir, filename), stateJSON, os.ModePerm)
+	return ioutil.WriteFile(path.Join(dir, filename), stateJSON, os.ModePerm)
 }

cmd/tendermint/commands/debug/kill.go

@@ -3,6 +3,7 @@ package debug
 import (
 	"errors"
 	"fmt"
+	"io/ioutil"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -13,98 +14,90 @@ import (
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
 
-	"github.com/tendermint/tendermint/config"
+	cfg "github.com/tendermint/tendermint/config"
 	"github.com/tendermint/tendermint/libs/cli"
-	"github.com/tendermint/tendermint/libs/log"
 	rpchttp "github.com/tendermint/tendermint/rpc/client/http"
 )
 
-func getKillCmd(logger log.Logger) *cobra.Command {
-	cmd := &cobra.Command{
-		Use:   "kill [pid] [compressed-output-file]",
-		Short: "Kill a Tendermint process while aggregating and packaging debugging data",
-		Long: `Kill a Tendermint process while also aggregating Tendermint process data
+var killCmd = &cobra.Command{
+	Use:   "kill [pid] [compressed-output-file]",
+	Short: "Kill a Tendermint process while aggregating and packaging debugging data",
+	Long: `Kill a Tendermint process while also aggregating Tendermint process data
 such as the latest node state, including consensus and networking state,
 go-routine state, and the node's WAL and config information. This aggregated data
 is packaged into a compressed archive.
 
 Example:
 $ tendermint debug kill 34255 /path/to/tm-debug.zip`,
-		Args: cobra.ExactArgs(2),
-		RunE: func(cmd *cobra.Command, args []string) error {
-			ctx := cmd.Context()
-			pid, err := strconv.ParseInt(args[0], 10, 64)
-			if err != nil {
-				return err
-			}
+	Args: cobra.ExactArgs(2),
+	RunE: killCmdHandler,
+}
 
-			outFile := args[1]
-			if outFile == "" {
-				return errors.New("invalid output file")
-			}
-			nodeRPCAddr, err := cmd.Flags().GetString(flagNodeRPCAddr)
-			if err != nil {
-				return fmt.Errorf("flag %q not defined: %w", flagNodeRPCAddr, err)
-			}
-
-			rpc, err := rpchttp.New(nodeRPCAddr)
-			if err != nil {
-				return fmt.Errorf("failed to create new http client: %w", err)
-			}
-
-			home := viper.GetString(cli.HomeFlag)
-			conf := config.DefaultConfig()
-			conf = conf.SetRoot(home)
-			config.EnsureRoot(conf.RootDir)
-
-			// Create a temporary directory which will contain all the state dumps and
-			// relevant files and directories that will be compressed into a file.
-			tmpDir, err := os.MkdirTemp(os.TempDir(), "tendermint_debug_tmp")
-			if err != nil {
-				return fmt.Errorf("failed to create temporary directory: %w", err)
-			}
-			defer os.RemoveAll(tmpDir)
-
-			logger.Info("getting node status...")
-			if err := dumpStatus(ctx, rpc, tmpDir, "status.json"); err != nil {
-				return err
-			}
-
-			logger.Info("getting node network info...")
-			if err := dumpNetInfo(ctx, rpc, tmpDir, "net_info.json"); err != nil {
-				return err
-			}
-
-			logger.Info("getting node consensus state...")
-			if err := dumpConsensusState(ctx, rpc, tmpDir, "consensus_state.json"); err != nil {
-				return err
-			}
-
-			logger.Info("copying node WAL...")
-			if err := copyWAL(conf, tmpDir); err != nil {
-				if !os.IsNotExist(err) {
-					return err
-				}
-
-				logger.Info("node WAL does not exist; continuing...")
-			}
-
-			logger.Info("copying node configuration...")
-			if err := copyConfig(home, tmpDir); err != nil {
-				return err
-			}
-
-			logger.Info("killing Tendermint process")
-			if err := killProc(int(pid), tmpDir); err != nil {
-				return err
-			}
-
-			logger.Info("archiving and compressing debug directory...")
-			return zipDir(tmpDir, outFile)
-		},
+func killCmdHandler(cmd *cobra.Command, args []string) error {
+	pid, err := strconv.ParseUint(args[0], 10, 64)
+	if err != nil {
+		return err
 	}
 
-	return cmd
+	outFile := args[1]
+	if outFile == "" {
+		return errors.New("invalid output file")
+	}
+
+	rpc, err := rpchttp.New(nodeRPCAddr)
+	if err != nil {
+		return fmt.Errorf("failed to create new http client: %w", err)
+	}
+
+	home := viper.GetString(cli.HomeFlag)
+	conf := cfg.DefaultConfig()
+	conf = conf.SetRoot(home)
+	cfg.EnsureRoot(conf.RootDir)
+
+	// Create a temporary directory which will contain all the state dumps and
+	// relevant files and directories that will be compressed into a file.
+	tmpDir, err := ioutil.TempDir(os.TempDir(), "tendermint_debug_tmp")
+	if err != nil {
+		return fmt.Errorf("failed to create temporary directory: %w", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	logger.Info("getting node status...")
+	if err := dumpStatus(rpc, tmpDir, "status.json"); err != nil {
+		return err
+	}
+
+	logger.Info("getting node network info...")
+	if err := dumpNetInfo(rpc, tmpDir, "net_info.json"); err != nil {
+		return err
+	}
+
+	logger.Info("getting node consensus state...")
+	if err := dumpConsensusState(rpc, tmpDir, "consensus_state.json"); err != nil {
+		return err
+	}
+
+	logger.Info("copying node WAL...")
+	if err := copyWAL(conf, tmpDir); err != nil {
+		if !os.IsNotExist(err) {
+			return err
+		}
+
+		logger.Info("node WAL does not exist; continuing...")
+	}
+
+	logger.Info("copying node configuration...")
+	if err := copyConfig(home, tmpDir); err != nil {
+		return err
+	}
+
+	logger.Info("killing Tendermint process")
+	if err := killProc(pid, tmpDir); err != nil {
+		return err
+	}
+
+	logger.Info("archiving and compressing debug directory...")
+	return zipDir(tmpDir, outFile)
 }
 
 // killProc attempts to kill the Tendermint process with a given PID with an
@@ -112,7 +105,7 @@ $ tendermint debug kill 34255 /path/to/tm-debug.zip`,
 // is tailed and piped to a file under the directory dir. An error is returned
 // if the output file cannot be created or the tail command cannot be started.
 // An error is not returned if any subsequent syscall fails.
-func killProc(pid int, dir string) error {
+func killProc(pid uint64, dir string) error {
 	// pipe STDERR output from tailing the Tendermint process to a file
 	//
 	// NOTE: This will only work on UNIX systems.
@@ -135,7 +128,7 @@ func killProc(pid int, dir string) error {
 	go func() {
 		// Killing the Tendermint process with the '-ABRT|-6' signal will result in
 		// a goroutine stacktrace.
-		p, err := os.FindProcess(pid)
+		p, err := os.FindProcess(int(pid))
 		if err != nil {
 			fmt.Fprintf(os.Stderr, "failed to find PID to kill Tendermint process: %s", err)
 		} else if err = p.Signal(syscall.SIGABRT); err != nil {

cmd/tendermint/commands/debug/util.go

@@ -3,20 +3,20 @@ package debug
 import (
 	"context"
 	"fmt"
-	"io"
+	"io/ioutil"
 	"net/http"
 	"os"
 	"path"
 	"path/filepath"
 
-	"github.com/tendermint/tendermint/config"
+	cfg "github.com/tendermint/tendermint/config"
 	rpchttp "github.com/tendermint/tendermint/rpc/client/http"
 )
 
 // dumpStatus gets node status state dump from the Tendermint RPC and writes it
 // to file. It returns an error upon failure.
-func dumpStatus(ctx context.Context, rpc *rpchttp.HTTP, dir, filename string) error {
-	status, err := rpc.Status(ctx)
+func dumpStatus(rpc *rpchttp.HTTP, dir, filename string) error {
+	status, err := rpc.Status(context.Background())
 	if err != nil {
 		return fmt.Errorf("failed to get node status: %w", err)
 	}
@@ -26,8 +26,8 @@ func dumpStatus(ctx context.Context, rpc *rpchttp.HTTP, dir, filename string) er
 
 // dumpNetInfo gets network information state dump from the Tendermint RPC and
 // writes it to file. It returns an error upon failure.
-func dumpNetInfo(ctx context.Context, rpc *rpchttp.HTTP, dir, filename string) error {
-	netInfo, err := rpc.NetInfo(ctx)
+func dumpNetInfo(rpc *rpchttp.HTTP, dir, filename string) error {
+	netInfo, err := rpc.NetInfo(context.Background())
 	if err != nil {
 		return fmt.Errorf("failed to get node network information: %w", err)
 	}
@@ -37,8 +37,8 @@ func dumpNetInfo(ctx context.Context, rpc *rpchttp.HTTP, dir, filename string) e
 
 // dumpConsensusState gets consensus state dump from the Tendermint RPC and
 // writes it to file. It returns an error upon failure.
-func dumpConsensusState(ctx context.Context, rpc *rpchttp.HTTP, dir, filename string) error {
-	consDump, err := rpc.DumpConsensusState(ctx)
+func dumpConsensusState(rpc *rpchttp.HTTP, dir, filename string) error {
+	consDump, err := rpc.DumpConsensusState(context.Background())
 	if err != nil {
 		return fmt.Errorf("failed to get node consensus dump: %w", err)
 	}
@@ -48,7 +48,7 @@ func dumpConsensusState(ctx context.Context, rpc *rpchttp.HTTP, dir, filename st
 
 // copyWAL copies the Tendermint node's WAL file. It returns an error if the
 // WAL file cannot be read or copied.
-func copyWAL(conf *config.Config, dir string) error {
+func copyWAL(conf *cfg.Config, dir string) error {
 	walPath := conf.Consensus.WalFile()
 	walFile := filepath.Base(walPath)
 
@@ -73,10 +73,10 @@ func dumpProfile(dir, addr, profile string, debug int) error {
 	}
 	defer resp.Body.Close()
 
-	body, err := io.ReadAll(resp.Body)
+	body, err := ioutil.ReadAll(resp.Body)
 	if err != nil {
 		return fmt.Errorf("failed to read %s profile response body: %w", profile, err)
 	}
 
-	return os.WriteFile(path.Join(dir, fmt.Sprintf("%s.out", profile)), body, os.ModePerm)
+	return ioutil.WriteFile(path.Join(dir, fmt.Sprintf("%s.out", profile)), body, os.ModePerm)
 }

cmd/tendermint/commands/gen_node_key.go

@@ -1,11 +1,11 @@
 package commands
 
 import (
-	"encoding/json"
 	"fmt"
 
 	"github.com/spf13/cobra"
 
+	tmjson "github.com/tendermint/tendermint/libs/json"
 	"github.com/tendermint/tendermint/types"
 )
 
@@ -20,7 +20,7 @@ var GenNodeKeyCmd = &cobra.Command{
 func genNodeKey(cmd *cobra.Command, args []string) error {
 	nodeKey := types.GenNodeKey()
 
-	bz, err := json.Marshal(nodeKey)
+	bz, err := tmjson.Marshal(nodeKey)
 	if err != nil {
 		return fmt.Errorf("nodeKey -> json: %w", err)
 	}

cmd/tendermint/commands/gen_validator.go

@@ -1,41 +1,41 @@
 package commands
 
 import (
-	"encoding/json"
 	"fmt"
 
 	"github.com/spf13/cobra"
 
+	tmjson "github.com/tendermint/tendermint/libs/json"
 	"github.com/tendermint/tendermint/privval"
 	"github.com/tendermint/tendermint/types"
 )
 
 // GenValidatorCmd allows the generation of a keypair for a
 // validator.
-func MakeGenValidatorCommand() *cobra.Command {
-	var keyType string
-	cmd := &cobra.Command{
-		Use:   "gen-validator",
-		Short: "Generate new validator keypair",
-		RunE: func(cmd *cobra.Command, args []string) error {
-			pv, err := privval.GenFilePV("", "", keyType)
-			if err != nil {
-				return err
-			}
+var GenValidatorCmd = &cobra.Command{
+	Use:   "gen-validator",
+	Short: "Generate new validator keypair",
+	RunE:  genValidator,
+}
 
-			jsbz, err := json.Marshal(pv)
-			if err != nil {
-				return fmt.Errorf("validator -> json: %w", err)
-			}
+func init() {
+	GenValidatorCmd.Flags().StringVar(&keyType, "key", types.ABCIPubKeyTypeEd25519,
+		"Key type to generate privval file with. Options: ed25519, secp256k1")
+}
 
-			fmt.Printf("%v\n", string(jsbz))
-
-			return nil
-		},
+func genValidator(cmd *cobra.Command, args []string) error {
+	pv, err := privval.GenFilePV("", "", keyType)
+	if err != nil {
+		return err
 	}
 
-	cmd.Flags().StringVar(&keyType, "key", types.ABCIPubKeyTypeEd25519,
-		"Key type to generate privval file with. Options: ed25519, secp256k1")
+	jsbz, err := tmjson.Marshal(pv)
+	if err != nil {
+		return fmt.Errorf("validator -> json: %w", err)
+	}
 
-	return cmd
+	fmt.Printf(`%v
+`, string(jsbz))
+
+	return nil
 }

cmd/tendermint/commands/init.go

@@ -7,8 +7,7 @@ import (
 
 	"github.com/spf13/cobra"
 
-	"github.com/tendermint/tendermint/config"
-	"github.com/tendermint/tendermint/libs/log"
+	cfg "github.com/tendermint/tendermint/config"
 	tmos "github.com/tendermint/tendermint/libs/os"
 	tmrand "github.com/tendermint/tendermint/libs/rand"
 	tmtime "github.com/tendermint/tendermint/libs/time"
@@ -16,40 +15,43 @@ import (
 	"github.com/tendermint/tendermint/types"
 )
 
-// MakeInitFilesCommand returns the command to initialize a fresh Tendermint Core instance.
-func MakeInitFilesCommand(conf *config.Config, logger log.Logger) *cobra.Command {
-	var keyType string
-	cmd := &cobra.Command{
-		Use:       "init [full|validator|seed]",
-		Short:     "Initializes a Tendermint node",
-		ValidArgs: []string{"full", "validator", "seed"},
-		// We allow for zero args so we can throw a more informative error
-		Args: cobra.MaximumNArgs(1),
-		RunE: func(cmd *cobra.Command, args []string) error {
-			if len(args) == 0 {
-				return errors.New("must specify a node type: tendermint init [validator|full|seed]")
-			}
-			conf.Mode = args[0]
-			return initFilesWithConfig(cmd.Context(), conf, logger, keyType)
-		},
-	}
-
-	cmd.Flags().StringVar(&keyType, "key", types.ABCIPubKeyTypeEd25519,
-		"Key type to generate privval file with. Options: ed25519, secp256k1")
-
-	return cmd
+// InitFilesCmd initializes a fresh Tendermint Core instance.
+var InitFilesCmd = &cobra.Command{
+	Use:       "init [full|validator|seed]",
+	Short:     "Initializes a Tendermint node",
+	ValidArgs: []string{"full", "validator", "seed"},
+	// We allow for zero args so we can throw a more informative error
+	Args: cobra.MaximumNArgs(1),
+	RunE: initFiles,
 }
 
-func initFilesWithConfig(ctx context.Context, conf *config.Config, logger log.Logger, keyType string) error {
+var (
+	keyType string
+)
+
+func init() {
+	InitFilesCmd.Flags().StringVar(&keyType, "key", types.ABCIPubKeyTypeEd25519,
+		"Key type to generate privval file with. Options: ed25519, secp256k1")
+}
+
+func initFiles(cmd *cobra.Command, args []string) error {
+	if len(args) == 0 {
+		return errors.New("must specify a node type: tendermint init [validator|full|seed]")
+	}
+	config.Mode = args[0]
+	return initFilesWithConfig(config)
+}
+
+func initFilesWithConfig(config *cfg.Config) error {
 	var (
 		pv  *privval.FilePV
 		err error
 	)
 
-	if conf.Mode == config.ModeValidator {
+	if config.Mode == cfg.ModeValidator {
 		// private validator
-		privValKeyFile := conf.PrivValidator.KeyFile()
-		privValStateFile := conf.PrivValidator.StateFile()
+		privValKeyFile := config.PrivValidator.KeyFile()
+		privValStateFile := config.PrivValidator.StateFile()
 		if tmos.FileExists(privValKeyFile) {
 			pv, err = privval.LoadFilePV(privValKeyFile, privValStateFile)
 			if err != nil {
@@ -63,15 +65,13 @@ func initFilesWithConfig(ctx context.Context, conf *config.Config, logger log.Lo
 			if err != nil {
 				return err
 			}
-			if err := pv.Save(); err != nil {
-				return err
-			}
+			pv.Save()
 			logger.Info("Generated private validator", "keyFile", privValKeyFile,
 				"stateFile", privValStateFile)
 		}
 	}
 
-	nodeKeyFile := conf.NodeKeyFile()
+	nodeKeyFile := config.NodeKeyFile()
 	if tmos.FileExists(nodeKeyFile) {
 		logger.Info("Found node key", "path", nodeKeyFile)
 	} else {
@@ -82,7 +82,7 @@ func initFilesWithConfig(ctx context.Context, conf *config.Config, logger log.Lo
 	}
 
 	// genesis file
-	genFile := conf.GenesisFile()
+	genFile := config.GenesisFile()
 	if tmos.FileExists(genFile) {
 		logger.Info("Found genesis file", "path", genFile)
 	} else {
@@ -98,7 +98,7 @@ func initFilesWithConfig(ctx context.Context, conf *config.Config, logger log.Lo
 			}
 		}
 
-		ctx, cancel := context.WithTimeout(ctx, ctxTimeout)
+		ctx, cancel := context.WithTimeout(context.TODO(), ctxTimeout)
 		defer cancel()
 
 		// if this is a validator we add it to genesis
@@ -121,10 +121,8 @@ func initFilesWithConfig(ctx context.Context, conf *config.Config, logger log.Lo
 	}
 
 	// write config file
-	if err := config.WriteConfigFile(conf.RootDir, conf); err != nil {
-		return err
-	}
-	logger.Info("Generated config", "mode", conf.Mode)
+	cfg.WriteConfigFile(config.RootDir, config)
+	logger.Info("Generated config", "mode", config.Mode)
 
 	return nil
 }

cmd/tendermint/commands/inspect.go

@@ -1,22 +1,26 @@
 package commands
 
 import (
+	"context"
+	"os"
 	"os/signal"
 	"syscall"
 
 	"github.com/spf13/cobra"
 
-	"github.com/tendermint/tendermint/config"
-	"github.com/tendermint/tendermint/internal/inspect"
-	"github.com/tendermint/tendermint/libs/log"
+	cfg "github.com/tendermint/tendermint/config"
+	"github.com/tendermint/tendermint/inspect"
+	"github.com/tendermint/tendermint/state"
+	"github.com/tendermint/tendermint/state/indexer/sink"
+	"github.com/tendermint/tendermint/store"
+	"github.com/tendermint/tendermint/types"
 )
 
-// InspectCmd constructs the command to start an inspect server.
-func MakeInspectCommand(conf *config.Config, logger log.Logger) *cobra.Command {
-	cmd := &cobra.Command{
-		Use:   "inspect",
-		Short: "Run an inspect server for investigating Tendermint state",
-		Long: `
+// InspectCmd is the command for starting an inspect server.
+var InspectCmd = &cobra.Command{
+	Use:   "inspect",
+	Short: "Run an inspect server for investigating Tendermint state",
+	Long: `
 	inspect runs a subset of Tendermint's RPC endpoints that are useful for debugging
 	issues with Tendermint.
 
@@ -25,27 +29,59 @@ func MakeInspectCommand(conf *config.Config, logger log.Logger) *cobra.Command {
 	The inspect command can be used to query the block and state store using Tendermint
 	RPC calls to debug issues of inconsistent state.
 	`,
-		RunE: func(cmd *cobra.Command, args []string) error {
-			ctx, cancel := signal.NotifyContext(cmd.Context(), syscall.SIGTERM, syscall.SIGINT)
-			defer cancel()
 
-			ins, err := inspect.NewFromConfig(logger, conf)
-			if err != nil {
-				return err
-			}
-
-			logger.Info("starting inspect server")
-			if err := ins.Run(ctx); err != nil {
-				return err
-			}
-			return nil
-		},
-	}
-	cmd.Flags().String("rpc.laddr",
-		conf.RPC.ListenAddress, "RPC listenener address. Port required")
-	cmd.Flags().String("db-backend",
-		conf.DBBackend, "database backend: goleveldb | cleveldb | boltdb | rocksdb | badgerdb")
-	cmd.Flags().String("db-dir", conf.DBPath, "database directory")
-
-	return cmd
+	RunE: runInspect,
+}
+
+func init() {
+	InspectCmd.Flags().
+		String("rpc.laddr",
+			config.RPC.ListenAddress, "RPC listenener address. Port required")
+	InspectCmd.Flags().
+		String("db-backend",
+			config.DBBackend, "database backend: goleveldb | cleveldb | boltdb | rocksdb | badgerdb")
+	InspectCmd.Flags().
+		String("db-dir", config.DBPath, "database directory")
+}
+
+func runInspect(cmd *cobra.Command, args []string) error {
+	ctx, cancel := context.WithCancel(cmd.Context())
+	defer cancel()
+
+	c := make(chan os.Signal, 1)
+	signal.Notify(c, syscall.SIGTERM, syscall.SIGINT)
+	go func() {
+		<-c
+		cancel()
+	}()
+
+	blockStoreDB, err := cfg.DefaultDBProvider(&cfg.DBContext{ID: "blockstore", Config: config})
+	if err != nil {
+		return err
+	}
+	blockStore := store.NewBlockStore(blockStoreDB)
+	stateDB, err := cfg.DefaultDBProvider(&cfg.DBContext{ID: "state", Config: config})
+	if err != nil {
+		if err := blockStoreDB.Close(); err != nil {
+			logger.Error("error closing block store db", "error", err)
+		}
+		return err
+	}
+	genDoc, err := types.GenesisDocFromFile(config.GenesisFile())
+	if err != nil {
+		return err
+	}
+	sinks, err := sink.EventSinksFromConfig(config, cfg.DefaultDBProvider, genDoc.ChainID)
+	if err != nil {
+		return err
+	}
+	stateStore := state.NewStore(stateDB)
+
+	ins := inspect.New(config.RPC, blockStore, stateStore, sinks, logger)
+
+	logger.Info("starting inspect server")
+	if err := ins.Run(ctx); err != nil {
+		return err
+	}
+	return nil
 }

cmd/tendermint/commands/key_migrate.go

@@ -5,13 +5,11 @@ import (
 	"fmt"
 
 	"github.com/spf13/cobra"
-
 	cfg "github.com/tendermint/tendermint/config"
-	"github.com/tendermint/tendermint/libs/log"
 	"github.com/tendermint/tendermint/scripts/keymigrate"
 )
 
-func MakeKeyMigrateCommand(conf *cfg.Config, logger log.Logger) *cobra.Command {
+func MakeKeyMigrateCommand() *cobra.Command {
 	cmd := &cobra.Command{
 		Use:   "key-migrate",
 		Short: "Run Database key migration",
@@ -40,7 +38,7 @@ func MakeKeyMigrateCommand(conf *cfg.Config, logger log.Logger) *cobra.Command {
 
 				db, err := cfg.DefaultDBProvider(&cfg.DBContext{
 					ID:     dbctx,
-					Config: conf,
+					Config: config,
 				})
 
 				if err != nil {
@@ -60,7 +58,7 @@ func MakeKeyMigrateCommand(conf *cfg.Config, logger log.Logger) *cobra.Command {
 	}
 
 	// allow database info to be overridden via cli
-	addDBFlags(cmd, conf)
+	addDBFlags(cmd)
 
 	return cmd
 }

cmd/tendermint/commands/light.go

@@ -1,22 +1,22 @@
 package commands
 
 import (
+	"context"
 	"errors"
 	"fmt"
 	"net/http"
 	"os"
-	"os/signal"
 	"path/filepath"
 	"strings"
-	"syscall"
 	"time"
 
 	"github.com/spf13/cobra"
+
 	dbm "github.com/tendermint/tm-db"
 
-	"github.com/tendermint/tendermint/config"
 	"github.com/tendermint/tendermint/libs/log"
 	tmmath "github.com/tendermint/tendermint/libs/math"
+	tmos "github.com/tendermint/tendermint/libs/os"
 	"github.com/tendermint/tendermint/light"
 	lproxy "github.com/tendermint/tendermint/light/proxy"
 	lrpc "github.com/tendermint/tendermint/light/rpc"
@@ -24,69 +24,20 @@ import (
 	rpcserver "github.com/tendermint/tendermint/rpc/jsonrpc/server"
 )
 
-// LightCmd constructs the base command called when invoked without any subcommands.
-func MakeLightCommand(conf *config.Config, logger log.Logger) *cobra.Command {
-	var (
-		listenAddr         string
-		primaryAddr        string
-		witnessAddrsJoined string
-		chainID            string
-		dir                string
-		maxOpenConnections int
-
-		sequential     bool
-		trustingPeriod time.Duration
-		trustedHeight  int64
-		trustedHash    []byte
-		trustLevelStr  string
-
-		logLevel  string
-		logFormat string
-
-		primaryKey   = []byte("primary")
-		witnessesKey = []byte("witnesses")
-	)
-
-	checkForExistingProviders := func(db dbm.DB) (string, []string, error) {
-		primaryBytes, err := db.Get(primaryKey)
-		if err != nil {
-			return "", []string{""}, err
-		}
-		witnessesBytes, err := db.Get(witnessesKey)
-		if err != nil {
-			return "", []string{""}, err
-		}
-		witnessesAddrs := strings.Split(string(witnessesBytes), ",")
-		return string(primaryBytes), witnessesAddrs, nil
-	}
-
-	saveProviders := func(db dbm.DB, primaryAddr, witnessesAddrs string) error {
-		err := db.Set(primaryKey, []byte(primaryAddr))
-		if err != nil {
-			return fmt.Errorf("failed to save primary provider: %w", err)
-		}
-		err = db.Set(witnessesKey, []byte(witnessesAddrs))
-		if err != nil {
-			return fmt.Errorf("failed to save witness providers: %w", err)
-		}
-		return nil
-	}
-
-	cmd := &cobra.Command{
-		Use:   "light [chainID]",
-		Short: "Run a light client proxy server, verifying Tendermint rpc",
-		Long: `Run a light client proxy server, verifying Tendermint rpc.
+// LightCmd represents the base command when called without any subcommands
+var LightCmd = &cobra.Command{
+	Use:   "light [chainID]",
+	Short: "Run a light client proxy server, verifying Tendermint rpc",
+	Long: `Run a light client proxy server, verifying Tendermint rpc.
 
 All calls that can be tracked back to a block header by a proof
 will be verified before passing them back to the caller. Other than
 that, it will present the same interface as a full Tendermint node.
 
 Furthermore to the chainID, a fresh instance of a light client will
-need a primary RPC address and a trusted hash and height. It is also highly
-recommended to provide additional witness RPC addresses, especially if
-not using sequential verification.
-
-To restart the node, thereafter only the chainID is required.
+need a primary RPC address, a trusted hash and height and witness RPC addresses
+(if not using sequential verification). To restart the node, thereafter
+only the chainID is required.
 
 When /abci_query is called, the Merkle key path format is:
 
@@ -95,138 +46,182 @@ When /abci_query is called, the Merkle key path format is:
 Please verify with your application that this Merkle key format is used (true
 for applications built w/ Cosmos SDK).
 `,
-		RunE: func(cmd *cobra.Command, args []string) error {
-			chainID = args[0]
-			logger.Info("Creating client...", "chainID", chainID)
-
-			var witnessesAddrs []string
-			if witnessAddrsJoined != "" {
-				witnessesAddrs = strings.Split(witnessAddrsJoined, ",")
-			}
-
-			lightDB, err := dbm.NewGoLevelDB("light-client-db", dir)
-			if err != nil {
-				return fmt.Errorf("can't create a db: %w", err)
-			}
-			// create a prefixed db on the chainID
-			db := dbm.NewPrefixDB(lightDB, []byte(chainID))
-
-			if primaryAddr == "" { // check to see if we can start from an existing state
-				var err error
-				primaryAddr, witnessesAddrs, err = checkForExistingProviders(db)
-				if err != nil {
-					return fmt.Errorf("failed to retrieve primary or witness from db: %w", err)
-				}
-				if primaryAddr == "" {
-					return errors.New("no primary address was provided nor found. Please provide a primary (using -p)." +
-						" Run the command: tendermint light --help for more information")
-				}
-			} else {
-				err := saveProviders(db, primaryAddr, witnessAddrsJoined)
-				if err != nil {
-					logger.Error("Unable to save primary and or witness addresses", "err", err)
-				}
-			}
-
-			if len(witnessesAddrs) < 1 && !sequential {
-				logger.Info("In skipping verification mode it is highly recommended to provide at least one witness")
-			}
-
-			trustLevel, err := tmmath.ParseFraction(trustLevelStr)
-			if err != nil {
-				return fmt.Errorf("can't parse trust level: %w", err)
-			}
-
-			options := []light.Option{light.Logger(logger)}
-
-			vo := light.SkippingVerification(trustLevel)
-			if sequential {
-				vo = light.SequentialVerification()
-			}
-			options = append(options, vo)
-
-			// Initiate the light client. If the trusted store already has blocks in it, this
-			// will be used else we use the trusted options.
-			c, err := light.NewHTTPClient(
-				cmd.Context(),
-				chainID,
-				light.TrustOptions{
-					Period: trustingPeriod,
-					Height: trustedHeight,
-					Hash:   trustedHash,
-				},
-				primaryAddr,
-				witnessesAddrs,
-				dbs.New(db),
-				options...,
-			)
-			if err != nil {
-				return err
-			}
-
-			cfg := rpcserver.DefaultConfig()
-			cfg.MaxBodyBytes = conf.RPC.MaxBodyBytes
-			cfg.MaxHeaderBytes = conf.RPC.MaxHeaderBytes
-			cfg.MaxOpenConnections = maxOpenConnections
-			// If necessary adjust global WriteTimeout to ensure it's greater than
-			// TimeoutBroadcastTxCommit.
-			// See https://github.com/tendermint/tendermint/issues/3435
-			if cfg.WriteTimeout <= conf.RPC.TimeoutBroadcastTxCommit {
-				cfg.WriteTimeout = conf.RPC.TimeoutBroadcastTxCommit + 1*time.Second
-			}
-
-			p, err := lproxy.NewProxy(c, listenAddr, primaryAddr, cfg, logger, lrpc.KeyPathFn(lrpc.DefaultMerkleKeyPathFn()))
-			if err != nil {
-				return err
-			}
-
-			ctx, cancel := signal.NotifyContext(cmd.Context(), syscall.SIGTERM)
-			defer cancel()
-
-			go func() {
-				<-ctx.Done()
-				p.Listener.Close()
-			}()
-
-			logger.Info("Starting proxy...", "laddr", listenAddr)
-			if err := p.ListenAndServe(ctx); err != http.ErrServerClosed {
-				// Error starting or closing listener:
-				logger.Error("proxy ListenAndServe", "err", err)
-			}
-
-			return nil
-		},
-		Args: cobra.ExactArgs(1),
-		Example: `light cosmoshub-3 -p http://52.57.29.196:26657 -w http://public-seed-node.cosmoshub.certus.one:26657
+	RunE: runProxy,
+	Args: cobra.ExactArgs(1),
+	Example: `light cosmoshub-3 -p http://52.57.29.196:26657 -w http://public-seed-node.cosmoshub.certus.one:26657
 	--height 962118 --hash 28B97BE9F6DE51AC69F70E0B7BFD7E5C9CD1A595B7DC31AFF27C50D4948020CD`,
-	}
+}
 
-	cmd.Flags().StringVar(&listenAddr, "laddr", "tcp://localhost:8888",
+var (
+	listenAddr         string
+	primaryAddr        string
+	witnessAddrsJoined string
+	chainID            string
+	dir                string
+	maxOpenConnections int
+
+	sequential     bool
+	trustingPeriod time.Duration
+	trustedHeight  int64
+	trustedHash    []byte
+	trustLevelStr  string
+
+	logLevel  string
+	logFormat string
+
+	primaryKey   = []byte("primary")
+	witnessesKey = []byte("witnesses")
+)
+
+func init() {
+	LightCmd.Flags().StringVar(&listenAddr, "laddr", "tcp://localhost:8888",
 		"serve the proxy on the given address")
-	cmd.Flags().StringVarP(&primaryAddr, "primary", "p", "",
+	LightCmd.Flags().StringVarP(&primaryAddr, "primary", "p", "",
 		"connect to a Tendermint node at this address")
-	cmd.Flags().StringVarP(&witnessAddrsJoined, "witnesses", "w", "",
+	LightCmd.Flags().StringVarP(&witnessAddrsJoined, "witnesses", "w", "",
 		"tendermint nodes to cross-check the primary node, comma-separated")
-	cmd.Flags().StringVarP(&dir, "dir", "d", os.ExpandEnv(filepath.Join("$HOME", ".tendermint-light")),
+	LightCmd.Flags().StringVarP(&dir, "dir", "d", os.ExpandEnv(filepath.Join("$HOME", ".tendermint-light")),
 		"specify the directory")
-	cmd.Flags().IntVar(
+	LightCmd.Flags().IntVar(
 		&maxOpenConnections,
 		"max-open-connections",
 		900,
 		"maximum number of simultaneous connections (including WebSocket).")
-	cmd.Flags().DurationVar(&trustingPeriod, "trusting-period", 168*time.Hour,
+	LightCmd.Flags().DurationVar(&trustingPeriod, "trusting-period", 168*time.Hour,
 		"trusting period that headers can be verified within. Should be significantly less than the unbonding period")
-	cmd.Flags().Int64Var(&trustedHeight, "height", 1, "Trusted header's height")
-	cmd.Flags().BytesHexVar(&trustedHash, "hash", []byte{}, "Trusted header's hash")
-	cmd.Flags().StringVar(&logLevel, "log-level", log.LogLevelInfo, "The logging level (debug|info|warn|error|fatal)")
-	cmd.Flags().StringVar(&logFormat, "log-format", log.LogFormatPlain, "The logging format (text|json)")
-	cmd.Flags().StringVar(&trustLevelStr, "trust-level", "1/3",
+	LightCmd.Flags().Int64Var(&trustedHeight, "height", 1, "Trusted header's height")
+	LightCmd.Flags().BytesHexVar(&trustedHash, "hash", []byte{}, "Trusted header's hash")
+	LightCmd.Flags().StringVar(&logLevel, "log-level", log.LogLevelInfo, "The logging level (debug|info|warn|error|fatal)")
+	LightCmd.Flags().StringVar(&logFormat, "log-format", log.LogFormatPlain, "The logging format (text|json)")
+	LightCmd.Flags().StringVar(&trustLevelStr, "trust-level", "1/3",
 		"trust level. Must be between 1/3 and 3/3",
 	)
-	cmd.Flags().BoolVar(&sequential, "sequential", false,
+	LightCmd.Flags().BoolVar(&sequential, "sequential", false,
 		"sequential verification. Verify all headers sequentially as opposed to using skipping verification",
 	)
-
-	return cmd
-
+}
+
+func runProxy(cmd *cobra.Command, args []string) error {
+	logger, err := log.NewDefaultLogger(logFormat, logLevel, false)
+	if err != nil {
+		return err
+	}
+
+	chainID = args[0]
+	logger.Info("Creating client...", "chainID", chainID)
+
+	witnessesAddrs := []string{}
+	if witnessAddrsJoined != "" {
+		witnessesAddrs = strings.Split(witnessAddrsJoined, ",")
+	}
+
+	lightDB, err := dbm.NewGoLevelDB("light-client-db", dir)
+	if err != nil {
+		return fmt.Errorf("can't create a db: %w", err)
+	}
+	// create a prefixed db on the chainID
+	db := dbm.NewPrefixDB(lightDB, []byte(chainID))
+
+	if primaryAddr == "" { // check to see if we can start from an existing state
+		var err error
+		primaryAddr, witnessesAddrs, err = checkForExistingProviders(db)
+		if err != nil {
+			return fmt.Errorf("failed to retrieve primary or witness from db: %w", err)
+		}
+		if primaryAddr == "" {
+			return errors.New("no primary address was provided nor found. Please provide a primary (using -p)." +
+				" Run the command: tendermint light --help for more information")
+		}
+	} else {
+		err := saveProviders(db, primaryAddr, witnessAddrsJoined)
+		if err != nil {
+			logger.Error("Unable to save primary and or witness addresses", "err", err)
+		}
+	}
+
+	trustLevel, err := tmmath.ParseFraction(trustLevelStr)
+	if err != nil {
+		return fmt.Errorf("can't parse trust level: %w", err)
+	}
+
+	options := []light.Option{light.Logger(logger)}
+
+	if sequential {
+		options = append(options, light.SequentialVerification())
+	} else {
+		options = append(options, light.SkippingVerification(trustLevel))
+	}
+
+	// Initiate the light client. If the trusted store already has blocks in it, this
+	// will be used else we use the trusted options.
+	c, err := light.NewHTTPClient(
+		context.Background(),
+		chainID,
+		light.TrustOptions{
+			Period: trustingPeriod,
+			Height: trustedHeight,
+			Hash:   trustedHash,
+		},
+		primaryAddr,
+		witnessesAddrs,
+		dbs.New(db),
+		options...,
+	)
+	if err != nil {
+		return err
+	}
+
+	cfg := rpcserver.DefaultConfig()
+	cfg.MaxBodyBytes = config.RPC.MaxBodyBytes
+	cfg.MaxHeaderBytes = config.RPC.MaxHeaderBytes
+	cfg.MaxOpenConnections = maxOpenConnections
+	// If necessary adjust global WriteTimeout to ensure it's greater than
+	// TimeoutBroadcastTxCommit.
+	// See https://github.com/tendermint/tendermint/issues/3435
+	if cfg.WriteTimeout <= config.RPC.TimeoutBroadcastTxCommit {
+		cfg.WriteTimeout = config.RPC.TimeoutBroadcastTxCommit + 1*time.Second
+	}
+
+	p, err := lproxy.NewProxy(c, listenAddr, primaryAddr, cfg, logger, lrpc.KeyPathFn(lrpc.DefaultMerkleKeyPathFn()))
+	if err != nil {
+		return err
+	}
+
+	// Stop upon receiving SIGTERM or CTRL-C.
+	tmos.TrapSignal(logger, func() {
+		p.Listener.Close()
+	})
+
+	logger.Info("Starting proxy...", "laddr", listenAddr)
+	if err := p.ListenAndServe(); err != http.ErrServerClosed {
+		// Error starting or closing listener:
+		logger.Error("proxy ListenAndServe", "err", err)
+	}
+
+	return nil
+}
+
+func checkForExistingProviders(db dbm.DB) (string, []string, error) {
+	primaryBytes, err := db.Get(primaryKey)
+	if err != nil {
+		return "", []string{""}, err
+	}
+	witnessesBytes, err := db.Get(witnessesKey)
+	if err != nil {
+		return "", []string{""}, err
+	}
+	witnessesAddrs := strings.Split(string(witnessesBytes), ",")
+	return string(primaryBytes), witnessesAddrs, nil
+}
+
+func saveProviders(db dbm.DB, primaryAddr, witnessesAddrs string) error {
+	err := db.Set(primaryKey, []byte(primaryAddr))
+	if err != nil {
+		return fmt.Errorf("failed to save primary provider: %w", err)
+	}
+	err = db.Set(witnessesKey, []byte(witnessesAddrs))
+	if err != nil {
+		return fmt.Errorf("failed to save witness providers: %w", err)
+	}
+	return nil
 }

cmd/tendermint/commands/probe_upnp.go

@@ -0,0 +1,32 @@
+package commands
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+
+	"github.com/tendermint/tendermint/internal/p2p/upnp"
+	tmjson "github.com/tendermint/tendermint/libs/json"
+)
+
+// ProbeUpnpCmd adds capabilities to test the UPnP functionality.
+var ProbeUpnpCmd = &cobra.Command{
+	Use:   "probe-upnp",
+	Short: "Test UPnP functionality",
+	RunE:  probeUpnp,
+}
+
+func probeUpnp(cmd *cobra.Command, args []string) error {
+	capabilities, err := upnp.Probe(logger)
+	if err != nil {
+		fmt.Println("Probe failed: ", err)
+	} else {
+		fmt.Println("Probe success!")
+		jsonBytes, err := tmjson.Marshal(capabilities)
+		if err != nil {
+			return err
+		}
+		fmt.Println(string(jsonBytes))
+	}
+	return nil
+}

cmd/tendermint/commands/reindex_event.go

@@ -3,23 +3,20 @@ package commands
 import (
 	"errors"
 	"fmt"
-	"path/filepath"
 	"strings"
 
 	"github.com/spf13/cobra"
-	dbm "github.com/tendermint/tm-db"
+	tmdb "github.com/tendermint/tm-db"
 
 	abcitypes "github.com/tendermint/tendermint/abci/types"
 	tmcfg "github.com/tendermint/tendermint/config"
 	"github.com/tendermint/tendermint/internal/libs/progressbar"
-	"github.com/tendermint/tendermint/internal/state"
-	"github.com/tendermint/tendermint/internal/state/indexer"
-	"github.com/tendermint/tendermint/internal/state/indexer/sink/kv"
-	"github.com/tendermint/tendermint/internal/state/indexer/sink/psql"
-	"github.com/tendermint/tendermint/internal/store"
-	"github.com/tendermint/tendermint/libs/log"
-	"github.com/tendermint/tendermint/libs/os"
-	"github.com/tendermint/tendermint/rpc/coretypes"
+	ctypes "github.com/tendermint/tendermint/rpc/core/types"
+	"github.com/tendermint/tendermint/state"
+	"github.com/tendermint/tendermint/state/indexer"
+	"github.com/tendermint/tendermint/state/indexer/sink/kv"
+	"github.com/tendermint/tendermint/state/indexer/sink/psql"
+	"github.com/tendermint/tendermint/store"
 	"github.com/tendermint/tendermint/types"
 )
 
@@ -27,68 +24,58 @@ const (
 	reindexFailed = "event re-index failed: "
 )
 
-// MakeReindexEventCommand constructs a command to re-index events in a block height interval.
-func MakeReindexEventCommand(conf *tmcfg.Config, logger log.Logger) *cobra.Command {
-	var (
-		startHeight int64
-		endHeight   int64
-	)
-
-	cmd := &cobra.Command{
-		Use:   "reindex-event",
-		Short: "reindex events to the event store backends",
-		Long: `
-reindex-event is an offline tooling to re-index block and tx events to the eventsinks,
-you can run this command when the event store backend dropped/disconnected or you want to
-replace the backend. The default start-height is 0, meaning the tooling will start
-reindex from the base block height(inclusive); and the default end-height is 0, meaning
-the tooling will reindex until the latest block height(inclusive). User can omit
-either or both arguments.
+// ReIndexEventCmd allows re-index the event by given block height interval
+var ReIndexEventCmd = &cobra.Command{
+	Use:   "reindex-event",
+	Short: "reindex events to the event store backends",
+	Long: `
+	reindex-event is an offline tooling to re-index block and tx events to the eventsinks,
+	you can run this command when the event store backend dropped/disconnected or you want to replace the backend.
+	The default start-height is 0, meaning the tooling will start reindex from the base block height(inclusive); and the
+	default end-height is 0, meaning the tooling will reindex until the latest block height(inclusive). User can omits
+	either or both arguments.
 	`,
-		Example: `
+	Example: `
 	tendermint reindex-event
 	tendermint reindex-event --start-height 2
 	tendermint reindex-event --end-height 10
 	tendermint reindex-event --start-height 2 --end-height 10
 	`,
-		RunE: func(cmd *cobra.Command, args []string) error {
-			bs, ss, err := loadStateAndBlockStore(conf)
-			if err != nil {
-				return fmt.Errorf("%s: %w", reindexFailed, err)
-			}
+	Run: func(cmd *cobra.Command, args []string) {
+		bs, ss, err := loadStateAndBlockStore(config)
+		if err != nil {
+			fmt.Println(reindexFailed, err)
+			return
+		}
 
-			cvhArgs := checkValidHeightArgs{
-				startHeight: startHeight,
-				endHeight:   endHeight,
-			}
-			if err := checkValidHeight(bs, cvhArgs); err != nil {
-				return fmt.Errorf("%s: %w", reindexFailed, err)
-			}
+		if err := checkValidHeight(bs); err != nil {
+			fmt.Println(reindexFailed, err)
+			return
+		}
 
-			es, err := loadEventSinks(conf)
-			if err != nil {
-				return fmt.Errorf("%s: %w", reindexFailed, err)
-			}
+		es, err := loadEventSinks(config)
+		if err != nil {
+			fmt.Println(reindexFailed, err)
+			return
+		}
 
-			riArgs := eventReIndexArgs{
-				startHeight: startHeight,
-				endHeight:   endHeight,
-				sinks:       es,
-				blockStore:  bs,
-				stateStore:  ss,
-			}
-			if err := eventReIndex(cmd, riArgs); err != nil {
-				return fmt.Errorf("%s: %w", reindexFailed, err)
-			}
+		if err = eventReIndex(cmd, es, bs, ss); err != nil {
+			fmt.Println(reindexFailed, err)
+			return
+		}
 
-			logger.Info("event re-index finished")
-			return nil
-		},
-	}
+		fmt.Println("event re-index finished")
+	},
+}
 
-	cmd.Flags().Int64Var(&startHeight, "start-height", 0, "the block height would like to start for re-index")
-	cmd.Flags().Int64Var(&endHeight, "end-height", 0, "the block height would like to finish for re-index")
-	return cmd
+var (
+	startHeight int64
+	endHeight   int64
+)
+
+func init() {
+	ReIndexEventCmd.Flags().Int64Var(&startHeight, "start-height", 0, "the block height would like to start for re-index")
+	ReIndexEventCmd.Flags().Int64Var(&endHeight, "end-height", 0, "the block height would like to finish for re-index")
 }
 
 func loadEventSinks(cfg *tmcfg.Config) ([]indexer.EventSink, error) {
@@ -119,7 +106,7 @@ func loadEventSinks(cfg *tmcfg.Config) ([]indexer.EventSink, error) {
 			if conn == "" {
 				return nil, errors.New("the psql connection settings cannot be empty")
 			}
-			es, err := psql.NewEventSink(conn, cfg.ChainID())
+			es, err := psql.NewEventSink(conn, chainID)
 			if err != nil {
 				return nil, err
 			}
@@ -142,25 +129,17 @@ func loadEventSinks(cfg *tmcfg.Config) ([]indexer.EventSink, error) {
 }
 
 func loadStateAndBlockStore(cfg *tmcfg.Config) (*store.BlockStore, state.Store, error) {
-	dbType := dbm.BackendType(cfg.DBBackend)
-
-	if !os.FileExists(filepath.Join(cfg.DBDir(), "blockstore.db")) {
-		return nil, nil, fmt.Errorf("no blockstore found in %v", cfg.DBDir())
-	}
+	dbType := tmdb.BackendType(cfg.DBBackend)
 
 	// Get BlockStore
-	blockStoreDB, err := dbm.NewDB("blockstore", dbType, cfg.DBDir())
+	blockStoreDB, err := tmdb.NewDB("blockstore", dbType, cfg.DBDir())
 	if err != nil {
 		return nil, nil, err
 	}
 	blockStore := store.NewBlockStore(blockStoreDB)
 
-	if !os.FileExists(filepath.Join(cfg.DBDir(), "state.db")) {
-		return nil, nil, fmt.Errorf("no blockstore found in %v", cfg.DBDir())
-	}
-
 	// Get StateStore
-	stateDB, err := dbm.NewDB("state", dbType, cfg.DBDir())
+	stateDB, err := tmdb.NewDB("state", dbType, cfg.DBDir())
 	if err != nil {
 		return nil, nil, err
 	}
@@ -169,58 +148,52 @@ func loadStateAndBlockStore(cfg *tmcfg.Config) (*store.BlockStore, state.Store,
 	return blockStore, stateStore, nil
 }
 
-type eventReIndexArgs struct {
-	startHeight int64
-	endHeight   int64
-	sinks       []indexer.EventSink
-	blockStore  state.BlockStore
-	stateStore  state.Store
-}
+func eventReIndex(cmd *cobra.Command, es []indexer.EventSink, bs state.BlockStore, ss state.Store) error {
 
-func eventReIndex(cmd *cobra.Command, args eventReIndexArgs) error {
 	var bar progressbar.Bar
-	bar.NewOption(args.startHeight-1, args.endHeight)
+	bar.NewOption(startHeight-1, endHeight)
 
 	fmt.Println("start re-indexing events:")
 	defer bar.Finish()
-	for i := args.startHeight; i <= args.endHeight; i++ {
+	for i := startHeight; i <= endHeight; i++ {
 		select {
 		case <-cmd.Context().Done():
 			return fmt.Errorf("event re-index terminated at height %d: %w", i, cmd.Context().Err())
 		default:
-			b := args.blockStore.LoadBlock(i)
+			b := bs.LoadBlock(i)
 			if b == nil {
 				return fmt.Errorf("not able to load block at height %d from the blockstore", i)
 			}
 
-			r, err := args.stateStore.LoadABCIResponses(i)
+			r, err := ss.LoadABCIResponses(i)
 			if err != nil {
 				return fmt.Errorf("not able to load ABCI Response at height %d from the statestore", i)
 			}
 
 			e := types.EventDataNewBlockHeader{
-				Header:              b.Header,
-				NumTxs:              int64(len(b.Txs)),
-				ResultFinalizeBlock: *r.FinalizeBlock,
+				Header:           b.Header,
+				NumTxs:           int64(len(b.Txs)),
+				ResultBeginBlock: *r.BeginBlock,
+				ResultEndBlock:   *r.EndBlock,
 			}
 
 			var batch *indexer.Batch
 			if e.NumTxs > 0 {
 				batch = indexer.NewBatch(e.NumTxs)
 
-				for i := range b.Data.Txs {
+				for i, tx := range b.Data.Txs {
 					tr := abcitypes.TxResult{
 						Height: b.Height,
 						Index:  uint32(i),
-						Tx:     b.Data.Txs[i],
-						Result: *(r.FinalizeBlock.Txs[i]),
+						Tx:     tx,
+						Result: *(r.DeliverTxs[i]),
 					}
 
 					_ = batch.Add(&tr)
 				}
 			}
 
-			for _, sink := range args.sinks {
+			for _, sink := range es {
 				if err := sink.IndexBlockEvents(e); err != nil {
 					return fmt.Errorf("block event re-index at height %d failed: %w", i, err)
 				}
@@ -239,45 +212,39 @@ func eventReIndex(cmd *cobra.Command, args eventReIndexArgs) error {
 	return nil
 }
 
-type checkValidHeightArgs struct {
-	startHeight int64
-	endHeight   int64
-}
-
-func checkValidHeight(bs state.BlockStore, args checkValidHeightArgs) error {
+func checkValidHeight(bs state.BlockStore) error {
 	base := bs.Base()
 
-	if args.startHeight == 0 {
-		args.startHeight = base
+	if startHeight == 0 {
+		startHeight = base
 		fmt.Printf("set the start block height to the base height of the blockstore %d \n", base)
 	}
 
-	if args.startHeight < base {
-		return fmt.Errorf("%s (requested start height: %d, base height: %d)",
-			coretypes.ErrHeightNotAvailable, args.startHeight, base)
+	if startHeight < base {
+		return fmt.Errorf("%s (requested start height: %d, base height: %d)", ctypes.ErrHeightNotAvailable, startHeight, base)
 	}
 
 	height := bs.Height()
 
-	if args.startHeight > height {
+	if startHeight > height {
 		return fmt.Errorf(
-			"%s (requested start height: %d, store height: %d)", coretypes.ErrHeightNotAvailable, args.startHeight, height)
+			"%s (requested start height: %d, store height: %d)", ctypes.ErrHeightNotAvailable, startHeight, height)
 	}
 
-	if args.endHeight == 0 || args.endHeight > height {
-		args.endHeight = height
+	if endHeight == 0 || endHeight > height {
+		endHeight = height
 		fmt.Printf("set the end block height to the latest height of the blockstore %d \n", height)
 	}
 
-	if args.endHeight < base {
+	if endHeight < base {
 		return fmt.Errorf(
-			"%s (requested end height: %d, base height: %d)", coretypes.ErrHeightNotAvailable, args.endHeight, base)
+			"%s (requested end height: %d, base height: %d)", ctypes.ErrHeightNotAvailable, endHeight, base)
 	}
 
-	if args.endHeight < args.startHeight {
+	if endHeight < startHeight {
 		return fmt.Errorf(
 			"%s (requested the end height: %d is less than the start height: %d)",
-			coretypes.ErrInvalidRequest, args.startHeight, args.endHeight)
+			ctypes.ErrInvalidRequest, startHeight, endHeight)
 	}
 
 	return nil

cmd/tendermint/commands/reindex_event_test.go

@@ -9,17 +9,12 @@ import (
 	"github.com/stretchr/testify/mock"
 	"github.com/stretchr/testify/require"
 
-	dbm "github.com/tendermint/tm-db"
-
 	abcitypes "github.com/tendermint/tendermint/abci/types"
-	"github.com/tendermint/tendermint/config"
-	"github.com/tendermint/tendermint/internal/state/indexer"
-	"github.com/tendermint/tendermint/internal/state/mocks"
-	"github.com/tendermint/tendermint/libs/log"
+	tmcfg "github.com/tendermint/tendermint/config"
 	prototmstate "github.com/tendermint/tendermint/proto/tendermint/state"
+	"github.com/tendermint/tendermint/state/indexer"
+	"github.com/tendermint/tendermint/state/mocks"
 	"github.com/tendermint/tendermint/types"
-
-	_ "github.com/lib/pq" // for the psql sink
 )
 
 const (
@@ -27,15 +22,13 @@ const (
 	base   int64 = 2
 )
 
-func setupReIndexEventCmd(ctx context.Context, conf *config.Config, logger log.Logger) *cobra.Command {
-	cmd := MakeReindexEventCommand(conf, logger)
-
+func setupReIndexEventCmd() *cobra.Command {
 	reIndexEventCmd := &cobra.Command{
-		Use: cmd.Use,
+		Use: ReIndexEventCmd.Use,
 		Run: func(cmd *cobra.Command, args []string) {},
 	}
 
-	_ = reIndexEventCmd.ExecuteContext(ctx)
+	_ = reIndexEventCmd.ExecuteContext(context.Background())
 
 	return reIndexEventCmd
 }
@@ -72,7 +65,10 @@ func TestReIndexEventCheckHeight(t *testing.T) {
 	}
 
 	for _, tc := range testCases {
-		err := checkValidHeight(mockBlockStore, checkValidHeightArgs{startHeight: tc.startHeight, endHeight: tc.endHeight})
+		startHeight = tc.startHeight
+		endHeight = tc.endHeight
+
+		err := checkValidHeight(mockBlockStore)
 		if tc.validHeight {
 			require.NoError(t, err)
 		} else {
@@ -98,7 +94,7 @@ func TestLoadEventSink(t *testing.T) {
 	}
 
 	for _, tc := range testCases {
-		cfg := config.TestConfig()
+		cfg := tmcfg.TestConfig()
 		cfg.TxIndex.Indexer = tc.sinks
 		cfg.TxIndex.PsqlConn = tc.connURL
 		_, err := loadEventSinks(cfg)
@@ -111,29 +107,12 @@ func TestLoadEventSink(t *testing.T) {
 }
 
 func TestLoadBlockStore(t *testing.T) {
-	testCfg, err := config.ResetTestRoot(t.TempDir(), t.Name())
-	require.NoError(t, err)
-	testCfg.DBBackend = "goleveldb"
-	_, _, err = loadStateAndBlockStore(testCfg)
-	// we should return an error because the state store and block store
-	// don't yet exist
-	require.Error(t, err)
-
-	dbType := dbm.BackendType(testCfg.DBBackend)
-	bsdb, err := dbm.NewDB("blockstore", dbType, testCfg.DBDir())
-	require.NoError(t, err)
-	bsdb.Close()
-
-	ssdb, err := dbm.NewDB("state", dbType, testCfg.DBDir())
-	require.NoError(t, err)
-	ssdb.Close()
-
-	bs, ss, err := loadStateAndBlockStore(testCfg)
+	bs, ss, err := loadStateAndBlockStore(tmcfg.TestConfig())
 	require.NoError(t, err)
 	require.NotNil(t, bs)
 	require.NotNil(t, ss)
-}
 
+}
 func TestReIndexEvent(t *testing.T) {
 	mockBlockStore := &mocks.BlockStore{}
 	mockStateStore := &mocks.Store{}
@@ -155,9 +134,9 @@ func TestReIndexEvent(t *testing.T) {
 
 	dtx := abcitypes.ResponseDeliverTx{}
 	abciResp := &prototmstate.ABCIResponses{
-		FinalizeBlock: &abcitypes.ResponseFinalizeBlock{
-			Txs: []*abcitypes.ResponseDeliverTx{&dtx},
-		},
+		DeliverTxs: []*abcitypes.ResponseDeliverTx{&dtx},
+		EndBlock:   &abcitypes.ResponseEndBlock{},
+		BeginBlock: &abcitypes.ResponseBeginBlock{},
 	}
 
 	mockStateStore.
@@ -178,22 +157,11 @@ func TestReIndexEvent(t *testing.T) {
 		{height, height, false},
 	}
 
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-	logger := log.NewNopLogger()
-	conf := config.DefaultConfig()
-
 	for _, tc := range testCases {
-		err := eventReIndex(
-			setupReIndexEventCmd(ctx, conf, logger),
-			eventReIndexArgs{
-				sinks:       []indexer.EventSink{mockEventSink},
-				blockStore:  mockBlockStore,
-				stateStore:  mockStateStore,
-				startHeight: tc.startHeight,
-				endHeight:   tc.endHeight,
-			})
+		startHeight = tc.startHeight
+		endHeight = tc.endHeight
 
+		err := eventReIndex(setupReIndexEventCmd(), []indexer.EventSink{mockEventSink}, mockBlockStore, mockStateStore)
 		if tc.reIndexErr {
 			require.Error(t, err)
 		} else {

cmd/tendermint/commands/replay.go

@@ -2,30 +2,24 @@ package commands
 
 import (
 	"github.com/spf13/cobra"
-
-	"github.com/tendermint/tendermint/config"
 	"github.com/tendermint/tendermint/internal/consensus"
-	"github.com/tendermint/tendermint/libs/log"
 )
 
-// MakeReplayCommand constructs a command to replay messages from the WAL into consensus.
-func MakeReplayCommand(conf *config.Config, logger log.Logger) *cobra.Command {
-	return &cobra.Command{
-		Use:   "replay",
-		Short: "Replay messages from WAL",
-		RunE: func(cmd *cobra.Command, args []string) error {
-			return consensus.RunReplayFile(cmd.Context(), logger, conf.BaseConfig, conf.Consensus, false)
-		},
-	}
+// ReplayCmd allows replaying of messages from the WAL.
+var ReplayCmd = &cobra.Command{
+	Use:   "replay",
+	Short: "Replay messages from WAL",
+	Run: func(cmd *cobra.Command, args []string) {
+		consensus.RunReplayFile(config.BaseConfig, config.Consensus, false)
+	},
 }
 
-// MakeReplayConsoleCommand constructs a command to replay WAL messages to stdout.
-func MakeReplayConsoleCommand(conf *config.Config, logger log.Logger) *cobra.Command {
-	return &cobra.Command{
-		Use:   "replay-console",
-		Short: "Replay messages from WAL in a console",
-		RunE: func(cmd *cobra.Command, args []string) error {
-			return consensus.RunReplayFile(cmd.Context(), logger, conf.BaseConfig, conf.Consensus, true)
-		},
-	}
+// ReplayConsoleCmd allows replaying of messages from the WAL in a
+// console.
+var ReplayConsoleCmd = &cobra.Command{
+	Use:   "replay-console",
+	Short: "Replay messages from WAL in a console",
+	Run: func(cmd *cobra.Command, args []string) {
+		consensus.RunReplayFile(config.BaseConfig, config.Consensus, true)
+	},
 }

cmd/tendermint/commands/reset_priv_validator.go

@@ -5,79 +5,75 @@ import (
 
 	"github.com/spf13/cobra"
 
-	"github.com/tendermint/tendermint/config"
 	"github.com/tendermint/tendermint/libs/log"
 	tmos "github.com/tendermint/tendermint/libs/os"
 	"github.com/tendermint/tendermint/privval"
 	"github.com/tendermint/tendermint/types"
 )
 
-// MakeResetAllCommand constructs a command that removes the database of
-// the specified Tendermint core instance.
-func MakeResetAllCommand(conf *config.Config, logger log.Logger) *cobra.Command {
-	var keyType string
-
-	cmd := &cobra.Command{
-		Use:   "unsafe-reset-all",
-		Short: "(unsafe) Remove all the data and WAL, reset this node's validator to genesis state",
-		RunE: func(cmd *cobra.Command, args []string) error {
-			return resetAll(conf.DBDir(), conf.PrivValidator.KeyFile(),
-				conf.PrivValidator.StateFile(), logger, keyType)
-		},
-	}
-	cmd.Flags().StringVar(&keyType, "key", types.ABCIPubKeyTypeEd25519,
-		"Key type to generate privval file with. Options: ed25519, secp256k1")
-
-	return cmd
+// ResetAllCmd removes the database of this Tendermint core
+// instance.
+var ResetAllCmd = &cobra.Command{
+	Use:   "unsafe-reset-all",
+	Short: "(unsafe) Remove all the data and WAL, reset this node's validator to genesis state",
+	RunE:  resetAll,
 }
 
-func MakeResetPrivateValidatorCommand(conf *config.Config, logger log.Logger) *cobra.Command {
-	var keyType string
+var keepAddrBook bool
 
-	cmd := &cobra.Command{
-		Use:   "unsafe-reset-priv-validator",
-		Short: "(unsafe) Reset this node's validator to genesis state",
-		RunE: func(cmd *cobra.Command, args []string) error {
-			return resetFilePV(conf.PrivValidator.KeyFile(), conf.PrivValidator.StateFile(), logger, keyType)
-		},
-	}
-
-	cmd.Flags().StringVar(&keyType, "key", types.ABCIPubKeyTypeEd25519,
+func init() {
+	ResetAllCmd.Flags().BoolVar(&keepAddrBook, "keep-addr-book", false, "keep the address book intact")
+	ResetPrivValidatorCmd.Flags().StringVar(&keyType, "key", types.ABCIPubKeyTypeEd25519,
 		"Key type to generate privval file with. Options: ed25519, secp256k1")
-	return cmd
+}
 
+// ResetPrivValidatorCmd resets the private validator files.
+var ResetPrivValidatorCmd = &cobra.Command{
+	Use:   "unsafe-reset-priv-validator",
+	Short: "(unsafe) Reset this node's validator to genesis state",
+	RunE:  resetPrivValidator,
 }
 
 // XXX: this is totally unsafe.
 // it's only suitable for testnets.
+func resetAll(cmd *cobra.Command, args []string) error {
+	return ResetAll(config.DBDir(), config.P2P.AddrBookFile(), config.PrivValidator.KeyFile(),
+		config.PrivValidator.StateFile(), logger)
+}
 
 // XXX: this is totally unsafe.
 // it's only suitable for testnets.
+func resetPrivValidator(cmd *cobra.Command, args []string) error {
+	return resetFilePV(config.PrivValidator.KeyFile(), config.PrivValidator.StateFile(), logger)
+}
 
-// resetAll removes address book files plus all data, and resets the privValdiator data.
+// ResetAll removes address book files plus all data, and resets the privValdiator data.
 // Exported so other CLI tools can use it.
-func resetAll(dbDir, privValKeyFile, privValStateFile string, logger log.Logger, keyType string) error {
+func ResetAll(dbDir, addrBookFile, privValKeyFile, privValStateFile string, logger log.Logger) error {
+	if keepAddrBook {
+		logger.Info("The address book remains intact")
+	} else {
+		removeAddrBook(addrBookFile, logger)
+	}
 	if err := os.RemoveAll(dbDir); err == nil {
 		logger.Info("Removed all blockchain history", "dir", dbDir)
 	} else {
-		logger.Error("error removing all blockchain history", "dir", dbDir, "err", err)
+		logger.Error("Error removing all blockchain history", "dir", dbDir, "err", err)
 	}
 	// recreate the dbDir since the privVal state needs to live there
 	if err := tmos.EnsureDir(dbDir, 0700); err != nil {
 		logger.Error("unable to recreate dbDir", "err", err)
 	}
-	return resetFilePV(privValKeyFile, privValStateFile, logger, keyType)
+	return resetFilePV(privValKeyFile, privValStateFile, logger)
 }
 
-func resetFilePV(privValKeyFile, privValStateFile string, logger log.Logger, keyType string) error {
+func resetFilePV(privValKeyFile, privValStateFile string, logger log.Logger) error {
 	if _, err := os.Stat(privValKeyFile); err == nil {
 		pv, err := privval.LoadFilePVEmptyState(privValKeyFile, privValStateFile)
 		if err != nil {
 			return err
 		}
-		if err := pv.Reset(); err != nil {
-			return err
-		}
+		pv.Reset()
 		logger.Info("Reset private validator file to genesis state", "keyFile", privValKeyFile,
 			"stateFile", privValStateFile)
 	} else {
@@ -85,11 +81,17 @@ func resetFilePV(privValKeyFile, privValStateFile string, logger log.Logger, key
 		if err != nil {
 			return err
 		}
-		if err := pv.Save(); err != nil {
-			return err
-		}
+		pv.Save()
 		logger.Info("Generated private validator file", "keyFile", privValKeyFile,
 			"stateFile", privValStateFile)
 	}
 	return nil
 }
+
+func removeAddrBook(addrBookFile string, logger log.Logger) {
+	if err := os.Remove(addrBookFile); err == nil {
+		logger.Info("Removed existing address book", "file", addrBookFile)
+	} else if !os.IsNotExist(err) {
+		logger.Info("Error removing address book", "file", addrBookFile, "err", err)
+	}
+}

cmd/tendermint/commands/rollback.go

@@ -1,53 +0,0 @@
-package commands
-
-import (
-	"fmt"
-
-	"github.com/spf13/cobra"
-
-	"github.com/tendermint/tendermint/config"
-	"github.com/tendermint/tendermint/internal/state"
-)
-
-func MakeRollbackStateCommand(conf *config.Config) *cobra.Command {
-	return &cobra.Command{
-		Use:   "rollback",
-		Short: "rollback tendermint state by one height",
-		Long: `
-A state rollback is performed to recover from an incorrect application state transition,
-when Tendermint has persisted an incorrect app hash and is thus unable to make
-progress. Rollback overwrites a state at height n with the state at height n - 1.
-The application should also roll back to height n - 1. No blocks are removed, so upon
-restarting Tendermint the transactions in block n will be re-executed against the
-application.
-`,
-		RunE: func(cmd *cobra.Command, args []string) error {
-			height, hash, err := RollbackState(conf)
-			if err != nil {
-				return fmt.Errorf("failed to rollback state: %w", err)
-			}
-
-			fmt.Printf("Rolled back state to height %d and hash %X", height, hash)
-			return nil
-		},
-	}
-
-}
-
-// RollbackState takes the state at the current height n and overwrites it with the state
-// at height n - 1. Note state here refers to tendermint state not application state.
-// Returns the latest state height and app hash alongside an error if there was one.
-func RollbackState(config *config.Config) (int64, []byte, error) {
-	// use the parsed config to load the block and state store
-	blockStore, stateStore, err := loadStateAndBlockStore(config)
-	if err != nil {
-		return -1, nil, err
-	}
-	defer func() {
-		_ = blockStore.Close()
-		_ = stateStore.Close()
-	}()
-
-	// rollback the last state
-	return state.Rollback(blockStore, stateStore)
-}

cmd/tendermint/commands/rollback_test.go

@@ -1,78 +0,0 @@
-package commands_test
-
-import (
-	"context"
-	"testing"
-	"time"
-
-	"github.com/stretchr/testify/require"
-
-	"github.com/tendermint/tendermint/cmd/tendermint/commands"
-	"github.com/tendermint/tendermint/libs/log"
-	"github.com/tendermint/tendermint/rpc/client/local"
-	rpctest "github.com/tendermint/tendermint/rpc/test"
-	e2e "github.com/tendermint/tendermint/test/e2e/app"
-)
-
-func TestRollbackIntegration(t *testing.T) {
-	var height int64
-	dir := t.TempDir()
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-	cfg, err := rpctest.CreateConfig(t, t.Name())
-	require.NoError(t, err)
-	cfg.BaseConfig.DBBackend = "goleveldb"
-
-	app, err := e2e.NewApplication(e2e.DefaultConfig(dir))
-	require.NoError(t, err)
-
-	t.Run("First run", func(t *testing.T) {
-		ctx, cancel := context.WithCancel(ctx)
-		defer cancel()
-		require.NoError(t, err)
-		node, _, err := rpctest.StartTendermint(ctx, cfg, app, rpctest.SuppressStdout)
-		require.NoError(t, err)
-		require.True(t, node.IsRunning())
-
-		time.Sleep(3 * time.Second)
-		cancel()
-		node.Wait()
-
-		require.False(t, node.IsRunning())
-	})
-	t.Run("Rollback", func(t *testing.T) {
-		time.Sleep(time.Second)
-		require.NoError(t, app.Rollback())
-		height, _, err = commands.RollbackState(cfg)
-		require.NoError(t, err, "%d", height)
-	})
-	t.Run("Restart", func(t *testing.T) {
-		require.True(t, height > 0, "%d", height)
-
-		ctx, cancel := context.WithTimeout(ctx, 10*time.Second)
-		defer cancel()
-		node2, _, err2 := rpctest.StartTendermint(ctx, cfg, app, rpctest.SuppressStdout)
-		require.NoError(t, err2)
-
-		logger := log.NewNopLogger()
-
-		client, err := local.New(logger, node2.(local.NodeService))
-		require.NoError(t, err)
-
-		ticker := time.NewTicker(200 * time.Millisecond)
-		for {
-			select {
-			case <-ctx.Done():
-				t.Fatalf("failed to make progress after 20 seconds. Min height: %d", height)
-			case <-ticker.C:
-				status, err := client.Status(ctx)
-				require.NoError(t, err)
-
-				if status.SyncInfo.LatestBlockHeight > height {
-					return
-				}
-			}
-		}
-	})
-
-}

cmd/tendermint/commands/root.go

@@ -2,66 +2,65 @@ package commands
 
 import (
 	"fmt"
-	"os"
-	"path/filepath"
 	"time"
 
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
 
-	"github.com/tendermint/tendermint/config"
-	"github.com/tendermint/tendermint/libs/cli"
+	cfg "github.com/tendermint/tendermint/config"
 	"github.com/tendermint/tendermint/libs/log"
 )
 
-const ctxTimeout = 4 * time.Second
+var (
+	config     = cfg.DefaultConfig()
+	logger     = log.MustNewDefaultLogger(log.LogFormatPlain, log.LogLevelInfo, false)
+	ctxTimeout = 4 * time.Second
+)
+
+func init() {
+	registerFlagsRootCmd(RootCmd)
+}
+
+func registerFlagsRootCmd(cmd *cobra.Command) {
+	cmd.PersistentFlags().String("log-level", config.LogLevel, "log level")
+}
 
 // ParseConfig retrieves the default environment configuration,
 // sets up the Tendermint root and ensures that the root exists
-func ParseConfig(conf *config.Config) (*config.Config, error) {
-	if err := viper.Unmarshal(conf); err != nil {
+func ParseConfig() (*cfg.Config, error) {
+	conf := cfg.DefaultConfig()
+	err := viper.Unmarshal(conf)
+	if err != nil {
 		return nil, err
 	}
-
 	conf.SetRoot(conf.RootDir)
-
+	cfg.EnsureRoot(conf.RootDir)
 	if err := conf.ValidateBasic(); err != nil {
-		return nil, fmt.Errorf("error in config file: %w", err)
+		return nil, fmt.Errorf("error in config file: %v", err)
 	}
 	return conf, nil
 }
 
-// RootCommand constructs the root command-line entry point for Tendermint core.
-func RootCommand(conf *config.Config, logger log.Logger) *cobra.Command {
-	cmd := &cobra.Command{
-		Use:   "tendermint",
-		Short: "BFT state machine replication for applications in any programming languages",
-		PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
-			if cmd.Name() == VersionCmd.Name() {
-				return nil
-			}
-
-			if err := cli.BindFlagsLoadViper(cmd, args); err != nil {
-				return err
-			}
-
-			pconf, err := ParseConfig(conf)
-			if err != nil {
-				return err
-			}
-			*conf = *pconf
-			config.EnsureRoot(conf.RootDir)
-
-			if err := log.OverrideWithNewLogger(logger, conf.LogFormat, conf.LogLevel); err != nil {
-				return err
-			}
-
+// RootCmd is the root command for Tendermint core.
+var RootCmd = &cobra.Command{
+	Use:   "tendermint",
+	Short: "BFT state machine replication for applications in any programming languages",
+	PersistentPreRunE: func(cmd *cobra.Command, args []string) (err error) {
+		if cmd.Name() == VersionCmd.Name() {
 			return nil
-		},
-	}
-	cmd.PersistentFlags().StringP(cli.HomeFlag, "", os.ExpandEnv(filepath.Join("$HOME", config.DefaultTendermintDir)), "directory for config and data")
-	cmd.PersistentFlags().Bool(cli.TraceFlag, false, "print out full stack trace on errors")
-	cmd.PersistentFlags().String("log-level", conf.LogLevel, "log level")
-	cobra.OnInitialize(func() { cli.InitEnv("TM") })
-	return cmd
+		}
+
+		config, err = ParseConfig()
+		if err != nil {
+			return err
+		}
+
+		logger, err = log.NewDefaultLogger(config.LogFormat, config.LogLevel, false)
+		if err != nil {
+			return err
+		}
+
+		logger = logger.With("module", "main")
+		return nil
+	},
 }

cmd/tendermint/commands/root_test.go

@@ -1,10 +1,11 @@
 package commands
 
 import (
-	"context"
 	"fmt"
+	"io/ioutil"
 	"os"
 	"path/filepath"
+	"strconv"
 	"testing"
 
 	"github.com/spf13/cobra"
@@ -14,54 +15,47 @@ import (
 
 	cfg "github.com/tendermint/tendermint/config"
 	"github.com/tendermint/tendermint/libs/cli"
-	"github.com/tendermint/tendermint/libs/log"
 	tmos "github.com/tendermint/tendermint/libs/os"
 )
 
-// writeConfigVals writes a toml file with the given values.
-// It returns an error if writing was impossible.
-func writeConfigVals(dir string, vals map[string]string) error {
-	data := ""
-	for k, v := range vals {
-		data += fmt.Sprintf("%s = \"%s\"\n", k, v)
-	}
-	cfile := filepath.Join(dir, "config.toml")
-	return os.WriteFile(cfile, []byte(data), 0600)
-}
-
 // clearConfig clears env vars, the given root dir, and resets viper.
-func clearConfig(t *testing.T, dir string) *cfg.Config {
-	t.Helper()
-	require.NoError(t, os.Unsetenv("TMHOME"))
-	require.NoError(t, os.Unsetenv("TM_HOME"))
-	require.NoError(t, os.RemoveAll(dir))
+func clearConfig(dir string) {
+	if err := os.Unsetenv("TMHOME"); err != nil {
+		panic(err)
+	}
+	if err := os.Unsetenv("TM_HOME"); err != nil {
+		panic(err)
+	}
 
+	if err := os.RemoveAll(dir); err != nil {
+		panic(err)
+	}
 	viper.Reset()
-	conf := cfg.DefaultConfig()
-	conf.RootDir = dir
-	return conf
+	config = cfg.DefaultConfig()
 }
 
 // prepare new rootCmd
-func testRootCmd(conf *cfg.Config) *cobra.Command {
-	logger := log.NewNopLogger()
-	cmd := RootCommand(conf, logger)
-	cmd.RunE = func(cmd *cobra.Command, args []string) error { return nil }
-
+func testRootCmd() *cobra.Command {
+	rootCmd := &cobra.Command{
+		Use:               RootCmd.Use,
+		PersistentPreRunE: RootCmd.PersistentPreRunE,
+		Run:               func(cmd *cobra.Command, args []string) {},
+	}
+	registerFlagsRootCmd(rootCmd)
 	var l string
-	cmd.PersistentFlags().String("log", l, "Log")
-	return cmd
+	rootCmd.PersistentFlags().String("log", l, "Log")
+	return rootCmd
 }
 
-func testSetup(ctx context.Context, t *testing.T, conf *cfg.Config, args []string, env map[string]string) error {
-	t.Helper()
+func testSetup(rootDir string, args []string, env map[string]string) error {
+	clearConfig(rootDir)
 
-	cmd := testRootCmd(conf)
-	viper.Set(cli.HomeFlag, conf.RootDir)
+	rootCmd := testRootCmd()
+	cmd := cli.PrepareBaseCmd(rootCmd, "TM", rootDir)
 
 	// run with the args and env
-	args = append([]string{cmd.Use}, args...)
-	return cli.RunWithArgs(ctx, cmd, args, env)
+	args = append([]string{rootCmd.Use}, args...)
+	return cli.RunWithArgs(cmd, args, env)
 }
 
 func TestRootHome(t *testing.T) {
@@ -77,29 +71,23 @@ func TestRootHome(t *testing.T) {
 		{nil, map[string]string{"TMHOME": newRoot}, newRoot},
 	}
 
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-
 	for i, tc := range cases {
-		t.Run(fmt.Sprint(i), func(t *testing.T) {
-			conf := clearConfig(t, tc.root)
+		idxString := strconv.Itoa(i)
 
-			err := testSetup(ctx, t, conf, tc.args, tc.env)
-			require.NoError(t, err)
+		err := testSetup(defaultRoot, tc.args, tc.env)
+		require.Nil(t, err, idxString)
 
-			require.Equal(t, tc.root, conf.RootDir)
-			require.Equal(t, tc.root, conf.P2P.RootDir)
-			require.Equal(t, tc.root, conf.Consensus.RootDir)
-			require.Equal(t, tc.root, conf.Mempool.RootDir)
-		})
+		assert.Equal(t, tc.root, config.RootDir, idxString)
+		assert.Equal(t, tc.root, config.P2P.RootDir, idxString)
+		assert.Equal(t, tc.root, config.Consensus.RootDir, idxString)
+		assert.Equal(t, tc.root, config.Mempool.RootDir, idxString)
 	}
 }
 
 func TestRootFlagsEnv(t *testing.T) {
+
 	// defaults
 	defaults := cfg.DefaultConfig()
-	defaultDir := t.TempDir()
-
 	defaultLogLvl := defaults.LogLevel
 
 	cases := []struct {
@@ -114,25 +102,18 @@ func TestRootFlagsEnv(t *testing.T) {
 		{nil, map[string]string{"TM_LOG_LEVEL": "debug"}, "debug"},       // right env
 	}
 
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-
+	defaultRoot := t.TempDir()
 	for i, tc := range cases {
-		t.Run(fmt.Sprint(i), func(t *testing.T) {
-			conf := clearConfig(t, defaultDir)
+		idxString := strconv.Itoa(i)
 
-			err := testSetup(ctx, t, conf, tc.args, tc.env)
-			require.NoError(t, err)
-
-			assert.Equal(t, tc.logLevel, conf.LogLevel)
-		})
+		err := testSetup(defaultRoot, tc.args, tc.env)
+		require.Nil(t, err, idxString)
 
+		assert.Equal(t, tc.logLevel, config.LogLevel, idxString)
 	}
 }
 
 func TestRootConfig(t *testing.T) {
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
 
 	// write non-default config
 	nonDefaultLogLvl := "debug"
@@ -141,8 +122,9 @@ func TestRootConfig(t *testing.T) {
 	}
 
 	cases := []struct {
-		args   []string
-		env    map[string]string
+		args []string
+		env  map[string]string
+
 		logLvl string
 	}{
 		{nil, nil, nonDefaultLogLvl},                             // should load config
@@ -151,30 +133,29 @@ func TestRootConfig(t *testing.T) {
 	}
 
 	for i, tc := range cases {
-		t.Run(fmt.Sprint(i), func(t *testing.T) {
-			defaultRoot := t.TempDir()
-			conf := clearConfig(t, defaultRoot)
-			conf.LogLevel = tc.logLvl
+		defaultRoot := t.TempDir()
+		idxString := strconv.Itoa(i)
+		clearConfig(defaultRoot)
 
-			// XXX: path must match cfg.defaultConfigPath
-			configFilePath := filepath.Join(defaultRoot, "config")
-			err := tmos.EnsureDir(configFilePath, 0700)
-			require.NoError(t, err)
+		// XXX: path must match cfg.defaultConfigPath
+		configFilePath := filepath.Join(defaultRoot, "config")
+		err := tmos.EnsureDir(configFilePath, 0700)
+		require.Nil(t, err)
 
-			// write the non-defaults to a different path
-			// TODO: support writing sub configs so we can test that too
-			err = writeConfigVals(configFilePath, cvals)
-			require.NoError(t, err)
+		// write the non-defaults to a different path
+		// TODO: support writing sub configs so we can test that too
+		err = WriteConfigVals(configFilePath, cvals)
+		require.Nil(t, err)
 
-			cmd := testRootCmd(conf)
+		rootCmd := testRootCmd()
+		cmd := cli.PrepareBaseCmd(rootCmd, "TM", defaultRoot)
 
-			// run with the args and env
-			tc.args = append([]string{cmd.Use}, tc.args...)
-			err = cli.RunWithArgs(ctx, cmd, tc.args, tc.env)
-			require.NoError(t, err)
+		// run with the args and env
+		tc.args = append([]string{rootCmd.Use}, tc.args...)
+		err = cli.RunWithArgs(cmd, tc.args, tc.env)
+		require.Nil(t, err, idxString)
 
-			require.Equal(t, tc.logLvl, conf.LogLevel)
-		})
+		assert.Equal(t, tc.logLvl, config.LogLevel, idxString)
 	}
 }
 
@@ -186,5 +167,5 @@ func WriteConfigVals(dir string, vals map[string]string) error {
 		data += fmt.Sprintf("%s = \"%s\"\n", k, v)
 	}
 	cfile := filepath.Join(dir, "config.toml")
-	return os.WriteFile(cfile, []byte(data), 0600)
+	return ioutil.WriteFile(cfile, []byte(data), 0600)
 }

cmd/tendermint/commands/run_node.go

@@ -3,128 +3,155 @@ package commands
 import (
 	"bytes"
 	"crypto/sha256"
+	"errors"
+	"flag"
 	"fmt"
 	"io"
 	"os"
-	"os/signal"
-	"syscall"
 
 	"github.com/spf13/cobra"
 
 	cfg "github.com/tendermint/tendermint/config"
-	"github.com/tendermint/tendermint/libs/log"
+	tmos "github.com/tendermint/tendermint/libs/os"
 )
 
 var (
 	genesisHash []byte
 )
 
-// AddNodeFlags exposes some common configuration options from conf in the flag
-// set for cmd. This is a convenience for commands embedding a Tendermint node.
-func AddNodeFlags(cmd *cobra.Command, conf *cfg.Config) {
+// AddNodeFlags exposes some common configuration options on the command-line
+// These are exposed for convenience of commands embedding a tendermint node
+func AddNodeFlags(cmd *cobra.Command) {
 	// bind flags
-	cmd.Flags().String("moniker", conf.Moniker, "node name")
+	cmd.Flags().String("moniker", config.Moniker, "node name")
 
 	// mode flags
-	cmd.Flags().String("mode", conf.Mode, "node mode (full | validator | seed)")
+	cmd.Flags().String("mode", config.Mode, "node mode (full | validator | seed)")
 
 	// priv val flags
 	cmd.Flags().String(
 		"priv-validator-laddr",
-		conf.PrivValidator.ListenAddr,
+		config.PrivValidator.ListenAddr,
 		"socket address to listen on for connections from external priv-validator process")
 
 	// node flags
+	cmd.Flags().Bool("blocksync.enable", config.BlockSync.Enable, "enable fast blockchain syncing")
 
+	// TODO (https://github.com/tendermint/tendermint/issues/6908): remove this check after the v0.35 release cycle
+	// This check was added to give users an upgrade prompt to use the new flag for syncing.
+	//
+	// The pflag package does not have a native way to print a depcrecation warning
+	// and return an error. This logic was added to print a deprecation message to the user
+	// and then crash if the user attempts to use the old --fast-sync flag.
+	fs := flag.NewFlagSet("", flag.ExitOnError)
+	fs.Func("fast-sync", "deprecated",
+		func(string) error {
+			return errors.New("--fast-sync has been deprecated, please use --blocksync.enable")
+		})
+	cmd.Flags().AddGoFlagSet(fs)
+
+	cmd.Flags().MarkHidden("fast-sync") //nolint:errcheck
 	cmd.Flags().BytesHexVar(
 		&genesisHash,
 		"genesis-hash",
 		[]byte{},
 		"optional SHA-256 hash of the genesis file")
-	cmd.Flags().Int64("consensus.double-sign-check-height", conf.Consensus.DoubleSignCheckHeight,
+	cmd.Flags().Int64("consensus.double-sign-check-height", config.Consensus.DoubleSignCheckHeight,
 		"how many blocks to look back to check existence of the node's "+
 			"consensus votes before joining consensus")
 
 	// abci flags
 	cmd.Flags().String(
 		"proxy-app",
-		conf.ProxyApp,
+		config.ProxyApp,
 		"proxy app address, or one of: 'kvstore',"+
-			" 'persistent_kvstore', 'e2e' or 'noop' for local testing.")
-	cmd.Flags().String("abci", conf.ABCI, "specify abci transport (socket | grpc)")
+			" 'persistent_kvstore' or 'noop' for local testing.")
+	cmd.Flags().String("abci", config.ABCI, "specify abci transport (socket | grpc)")
 
 	// rpc flags
-	cmd.Flags().String("rpc.laddr", conf.RPC.ListenAddress, "RPC listen address. Port required")
-	cmd.Flags().Bool("rpc.unsafe", conf.RPC.Unsafe, "enabled unsafe rpc methods")
-	cmd.Flags().String("rpc.pprof-laddr", conf.RPC.PprofListenAddress, "pprof listen address (https://golang.org/pkg/net/http/pprof)")
+	cmd.Flags().String("rpc.laddr", config.RPC.ListenAddress, "RPC listen address. Port required")
+	cmd.Flags().String(
+		"rpc.grpc-laddr",
+		config.RPC.GRPCListenAddress,
+		"GRPC listen address (BroadcastTx only). Port required")
+	cmd.Flags().Bool("rpc.unsafe", config.RPC.Unsafe, "enabled unsafe rpc methods")
+	cmd.Flags().String("rpc.pprof-laddr", config.RPC.PprofListenAddress, "pprof listen address (https://golang.org/pkg/net/http/pprof)")
 
 	// p2p flags
 	cmd.Flags().String(
 		"p2p.laddr",
-		conf.P2P.ListenAddress,
+		config.P2P.ListenAddress,
 		"node listen address. (0.0.0.0:0 means any interface, any port)")
-	cmd.Flags().String("p2p.seeds", conf.P2P.Seeds, "comma-delimited ID@host:port seed nodes") //nolint: staticcheck
-	cmd.Flags().String("p2p.persistent-peers", conf.P2P.PersistentPeers, "comma-delimited ID@host:port persistent peers")
-	cmd.Flags().Bool("p2p.upnp", conf.P2P.UPNP, "enable/disable UPNP port forwarding")
-	cmd.Flags().Bool("p2p.pex", conf.P2P.PexReactor, "enable/disable Peer-Exchange")
-	cmd.Flags().String("p2p.private-peer-ids", conf.P2P.PrivatePeerIDs, "comma-delimited private peer IDs")
+	cmd.Flags().String("p2p.seeds", config.P2P.Seeds, "comma-delimited ID@host:port seed nodes")
+	cmd.Flags().String("p2p.persistent-peers", config.P2P.PersistentPeers, "comma-delimited ID@host:port persistent peers")
+	cmd.Flags().String("p2p.unconditional-peer-ids",
+		config.P2P.UnconditionalPeerIDs, "comma-delimited IDs of unconditional peers")
+	cmd.Flags().Bool("p2p.upnp", config.P2P.UPNP, "enable/disable UPNP port forwarding")
+	cmd.Flags().Bool("p2p.pex", config.P2P.PexReactor, "enable/disable Peer-Exchange")
+	cmd.Flags().String("p2p.private-peer-ids", config.P2P.PrivatePeerIDs, "comma-delimited private peer IDs")
 
 	// consensus flags
 	cmd.Flags().Bool(
 		"consensus.create-empty-blocks",
-		conf.Consensus.CreateEmptyBlocks,
+		config.Consensus.CreateEmptyBlocks,
 		"set this to false to only produce blocks when there are txs or when the AppHash changes")
 	cmd.Flags().String(
 		"consensus.create-empty-blocks-interval",
-		conf.Consensus.CreateEmptyBlocksInterval.String(),
+		config.Consensus.CreateEmptyBlocksInterval.String(),
 		"the possible interval between empty blocks")
 
-	addDBFlags(cmd, conf)
+	addDBFlags(cmd)
 }
 
-func addDBFlags(cmd *cobra.Command, conf *cfg.Config) {
+func addDBFlags(cmd *cobra.Command) {
 	cmd.Flags().String(
 		"db-backend",
-		conf.DBBackend,
+		config.DBBackend,
 		"database backend: goleveldb | cleveldb | boltdb | rocksdb | badgerdb")
 	cmd.Flags().String(
 		"db-dir",
-		conf.DBPath,
+		config.DBPath,
 		"database directory")
 }
 
 // NewRunNodeCmd returns the command that allows the CLI to start a node.
 // It can be used with a custom PrivValidator and in-process ABCI application.
-func NewRunNodeCmd(nodeProvider cfg.ServiceProvider, conf *cfg.Config, logger log.Logger) *cobra.Command {
+func NewRunNodeCmd(nodeProvider cfg.ServiceProvider) *cobra.Command {
 	cmd := &cobra.Command{
 		Use:     "start",
 		Aliases: []string{"node", "run"},
 		Short:   "Run the tendermint node",
 		RunE: func(cmd *cobra.Command, args []string) error {
-			if err := checkGenesisHash(conf); err != nil {
+			if err := checkGenesisHash(config); err != nil {
 				return err
 			}
 
-			ctx, cancel := signal.NotifyContext(cmd.Context(), syscall.SIGTERM)
-			defer cancel()
-
-			n, err := nodeProvider(ctx, conf, logger)
+			n, err := nodeProvider(config, logger)
 			if err != nil {
 				return fmt.Errorf("failed to create node: %w", err)
 			}
 
-			if err := n.Start(ctx); err != nil {
+			if err := n.Start(); err != nil {
 				return fmt.Errorf("failed to start node: %w", err)
 			}
 
-			logger.Info("started node", "chain", conf.ChainID())
+			logger.Info("started node", "node", n.String())
 
-			<-ctx.Done()
-			return nil
+			// Stop upon receiving SIGTERM or CTRL-C.
+			tmos.TrapSignal(logger, func() {
+				if n.IsRunning() {
+					if err := n.Stop(); err != nil {
+						logger.Error("unable to stop the node", "error", err)
+					}
+				}
+			})
+
+			// Run forever.
+			select {}
 		},
 	}
 
-	AddNodeFlags(cmd, conf)
+	AddNodeFlags(cmd)
 	return cmd
 }
 

cmd/tendermint/commands/show_node_id.go

@@ -4,23 +4,21 @@ import (
 	"fmt"
 
 	"github.com/spf13/cobra"
-
-	"github.com/tendermint/tendermint/config"
 )
 
-// MakeShowNodeIDCommand constructs a command to dump the node ID to stdout.
-func MakeShowNodeIDCommand(conf *config.Config) *cobra.Command {
-	return &cobra.Command{
-		Use:   "show-node-id",
-		Short: "Show this node's ID",
-		RunE: func(cmd *cobra.Command, args []string) error {
-			nodeKeyID, err := conf.LoadNodeKeyID()
-			if err != nil {
-				return err
-			}
-
-			fmt.Println(nodeKeyID)
-			return nil
-		},
-	}
+// ShowNodeIDCmd dumps node's ID to the standard output.
+var ShowNodeIDCmd = &cobra.Command{
+	Use:   "show-node-id",
+	Short: "Show this node's ID",
+	RunE:  showNodeID,
+}
+
+func showNodeID(cmd *cobra.Command, args []string) error {
+	nodeKeyID, err := config.LoadNodeKeyID()
+	if err != nil {
+		return err
+	}
+
+	fmt.Println(nodeKeyID)
+	return nil
 }

cmd/tendermint/commands/show_validator.go

@@ -6,78 +6,74 @@ import (
 
 	"github.com/spf13/cobra"
 
-	"github.com/tendermint/tendermint/config"
 	"github.com/tendermint/tendermint/crypto"
-	"github.com/tendermint/tendermint/internal/jsontypes"
-	"github.com/tendermint/tendermint/libs/log"
+	tmjson "github.com/tendermint/tendermint/libs/json"
 	tmnet "github.com/tendermint/tendermint/libs/net"
 	tmos "github.com/tendermint/tendermint/libs/os"
 	"github.com/tendermint/tendermint/privval"
 	tmgrpc "github.com/tendermint/tendermint/privval/grpc"
 )
 
-// MakeShowValidatorCommand constructs a command to show the validator info.
-func MakeShowValidatorCommand(conf *config.Config, logger log.Logger) *cobra.Command {
-	return &cobra.Command{
-		Use:   "show-validator",
-		Short: "Show this node's validator info",
-		RunE: func(cmd *cobra.Command, args []string) error {
-			var (
-				pubKey crypto.PubKey
-				err    error
-				bctx   = cmd.Context()
-			)
-			//TODO: remove once gRPC is the only supported protocol
-			protocol, _ := tmnet.ProtocolAndAddress(conf.PrivValidator.ListenAddr)
-			switch protocol {
-			case "grpc":
-				pvsc, err := tmgrpc.DialRemoteSigner(
-					bctx,
-					conf.PrivValidator,
-					conf.ChainID(),
-					logger,
-					conf.Instrumentation.Prometheus,
-				)
-				if err != nil {
-					return fmt.Errorf("can't connect to remote validator %w", err)
-				}
+// ShowValidatorCmd adds capabilities for showing the validator info.
+var ShowValidatorCmd = &cobra.Command{
+	Use:   "show-validator",
+	Short: "Show this node's validator info",
+	RunE:  showValidator,
+}
 
-				ctx, cancel := context.WithTimeout(bctx, ctxTimeout)
-				defer cancel()
+func showValidator(cmd *cobra.Command, args []string) error {
+	var (
+		pubKey crypto.PubKey
+		err    error
+	)
 
-				pubKey, err = pvsc.GetPubKey(ctx)
-				if err != nil {
-					return fmt.Errorf("can't get pubkey: %w", err)
-				}
-			default:
+	//TODO: remove once gRPC is the only supported protocol
+	protocol, _ := tmnet.ProtocolAndAddress(config.PrivValidator.ListenAddr)
+	switch protocol {
+	case "grpc":
+		pvsc, err := tmgrpc.DialRemoteSigner(
+			config.PrivValidator,
+			config.ChainID(),
+			logger,
+			config.Instrumentation.Prometheus,
+		)
+		if err != nil {
+			return fmt.Errorf("can't connect to remote validator %w", err)
+		}
 
-				keyFilePath := conf.PrivValidator.KeyFile()
-				if !tmos.FileExists(keyFilePath) {
-					return fmt.Errorf("private validator file %s does not exist", keyFilePath)
-				}
+		ctx, cancel := context.WithTimeout(context.TODO(), ctxTimeout)
+		defer cancel()
 
-				pv, err := privval.LoadFilePV(keyFilePath, conf.PrivValidator.StateFile())
-				if err != nil {
-					return err
-				}
+		pubKey, err = pvsc.GetPubKey(ctx)
+		if err != nil {
+			return fmt.Errorf("can't get pubkey: %w", err)
+		}
+	default:
 
-				ctx, cancel := context.WithTimeout(bctx, ctxTimeout)
-				defer cancel()
+		keyFilePath := config.PrivValidator.KeyFile()
+		if !tmos.FileExists(keyFilePath) {
+			return fmt.Errorf("private validator file %s does not exist", keyFilePath)
+		}
 
-				pubKey, err = pv.GetPubKey(ctx)
-				if err != nil {
-					return fmt.Errorf("can't get pubkey: %w", err)
-				}
-			}
+		pv, err := privval.LoadFilePV(keyFilePath, config.PrivValidator.StateFile())
+		if err != nil {
+			return err
+		}
 
-			bz, err := jsontypes.Marshal(pubKey)
-			if err != nil {
-				return fmt.Errorf("failed to marshal private validator pubkey: %w", err)
-			}
+		ctx, cancel := context.WithTimeout(context.TODO(), ctxTimeout)
+		defer cancel()
 
-			fmt.Println(string(bz))
-			return nil
-		},
+		pubKey, err = pv.GetPubKey(ctx)
+		if err != nil {
+			return fmt.Errorf("can't get pubkey: %w", err)
+		}
 	}
 
+	bz, err := tmjson.Marshal(pubKey)
+	if err != nil {
+		return fmt.Errorf("failed to marshal private validator pubkey: %w", err)
+	}
+
+	fmt.Println(string(bz))
+	return nil
 }

cmd/tendermint/commands/testnet.go

@@ -13,23 +13,76 @@ import (
 
 	cfg "github.com/tendermint/tendermint/config"
 	"github.com/tendermint/tendermint/libs/bytes"
-	"github.com/tendermint/tendermint/libs/log"
 	tmrand "github.com/tendermint/tendermint/libs/rand"
 	tmtime "github.com/tendermint/tendermint/libs/time"
 	"github.com/tendermint/tendermint/privval"
 	"github.com/tendermint/tendermint/types"
 )
 
+var (
+	nValidators    int
+	nNonValidators int
+	initialHeight  int64
+	configFile     string
+	outputDir      string
+	nodeDirPrefix  string
+
+	populatePersistentPeers bool
+	hostnamePrefix          string
+	hostnameSuffix          string
+	startingIPAddress       string
+	hostnames               []string
+	p2pPort                 int
+	randomMonikers          bool
+)
+
 const (
 	nodeDirPerm = 0755
 )
 
-// MakeTestnetFilesCommand constructs a command to generate testnet config files.
-func MakeTestnetFilesCommand(conf *cfg.Config, logger log.Logger) *cobra.Command {
-	cmd := &cobra.Command{
-		Use:   "testnet",
-		Short: "Initialize files for a Tendermint testnet",
-		Long: `testnet will create "v" + "n" number of directories and populate each with
+func init() {
+	TestnetFilesCmd.Flags().IntVar(&nValidators, "v", 4,
+		"number of validators to initialize the testnet with")
+	TestnetFilesCmd.Flags().StringVar(&configFile, "config", "",
+		"config file to use (note some options may be overwritten)")
+	TestnetFilesCmd.Flags().IntVar(&nNonValidators, "n", 0,
+		"number of non-validators to initialize the testnet with")
+	TestnetFilesCmd.Flags().StringVar(&outputDir, "o", "./mytestnet",
+		"directory to store initialization data for the testnet")
+	TestnetFilesCmd.Flags().StringVar(&nodeDirPrefix, "node-dir-prefix", "node",
+		"prefix the directory name for each node with (node results in node0, node1, ...)")
+	TestnetFilesCmd.Flags().Int64Var(&initialHeight, "initial-height", 0,
+		"initial height of the first block")
+
+	TestnetFilesCmd.Flags().BoolVar(&populatePersistentPeers, "populate-persistent-peers", true,
+		"update config of each node with the list of persistent peers build using either"+
+			" hostname-prefix or"+
+			" starting-ip-address")
+	TestnetFilesCmd.Flags().StringVar(&hostnamePrefix, "hostname-prefix", "node",
+		"hostname prefix (\"node\" results in persistent peers list ID0@node0:26656, ID1@node1:26656, ...)")
+	TestnetFilesCmd.Flags().StringVar(&hostnameSuffix, "hostname-suffix", "",
+		"hostname suffix ("+
+			"\".xyz.com\""+
+			" results in persistent peers list ID0@node0.xyz.com:26656, ID1@node1.xyz.com:26656, ...)")
+	TestnetFilesCmd.Flags().StringVar(&startingIPAddress, "starting-ip-address", "",
+		"starting IP address ("+
+			"\"192.168.0.1\""+
+			" results in persistent peers list ID0@192.168.0.1:26656, ID1@192.168.0.2:26656, ...)")
+	TestnetFilesCmd.Flags().StringArrayVar(&hostnames, "hostname", []string{},
+		"manually override all hostnames of validators and non-validators (use --hostname multiple times for multiple hosts)")
+	TestnetFilesCmd.Flags().IntVar(&p2pPort, "p2p-port", 26656,
+		"P2P Port")
+	TestnetFilesCmd.Flags().BoolVar(&randomMonikers, "random-monikers", false,
+		"randomize the moniker for each generated node")
+	TestnetFilesCmd.Flags().StringVar(&keyType, "key", types.ABCIPubKeyTypeEd25519,
+		"Key type to generate privval file with. Options: ed25519, secp256k1")
+}
+
+// TestnetFilesCmd allows initialisation of files for a Tendermint testnet.
+var TestnetFilesCmd = &cobra.Command{
+	Use:   "testnet",
+	Short: "Initialize files for a Tendermint testnet",
+	Long: `testnet will create "v" + "n" number of directories and populate each with
 necessary files (private validator, genesis, config, etc.).
 
 Note, strict routability for addresses is turned off in the config file.
@@ -40,292 +93,204 @@ Example:
 
 	tendermint testnet --v 4 --o ./output --populate-persistent-peers --starting-ip-address 192.168.10.2
 	`,
-	}
-	var (
-		nValidators    int
-		nNonValidators int
-		initialHeight  int64
-		configFile     string
-		outputDir      string
-		nodeDirPrefix  string
+	RunE: testnetFiles,
+}
 
-		populatePersistentPeers bool
-		hostnamePrefix          string
-		hostnameSuffix          string
-		startingIPAddress       string
-		hostnames               []string
-		p2pPort                 int
-		randomMonikers          bool
-		keyType                 string
-	)
-
-	cmd.Flags().IntVar(&nValidators, "v", 4,
-		"number of validators to initialize the testnet with")
-	cmd.Flags().StringVar(&configFile, "config", "",
-		"config file to use (note some options may be overwritten)")
-	cmd.Flags().IntVar(&nNonValidators, "n", 0,
-		"number of non-validators to initialize the testnet with")
-	cmd.Flags().StringVar(&outputDir, "o", "./mytestnet",
-		"directory to store initialization data for the testnet")
-	cmd.Flags().StringVar(&nodeDirPrefix, "node-dir-prefix", "node",
-		"prefix the directory name for each node with (node results in node0, node1, ...)")
-	cmd.Flags().Int64Var(&initialHeight, "initial-height", 0,
-		"initial height of the first block")
-
-	cmd.Flags().BoolVar(&populatePersistentPeers, "populate-persistent-peers", true,
-		"update config of each node with the list of persistent peers build using either"+
-			" hostname-prefix or"+
-			" starting-ip-address")
-	cmd.Flags().StringVar(&hostnamePrefix, "hostname-prefix", "node",
-		"hostname prefix (\"node\" results in persistent peers list ID0@node0:26656, ID1@node1:26656, ...)")
-	cmd.Flags().StringVar(&hostnameSuffix, "hostname-suffix", "",
-		"hostname suffix ("+
-			"\".xyz.com\""+
-			" results in persistent peers list ID0@node0.xyz.com:26656, ID1@node1.xyz.com:26656, ...)")
-	cmd.Flags().StringVar(&startingIPAddress, "starting-ip-address", "",
-		"starting IP address ("+
-			"\"192.168.0.1\""+
-			" results in persistent peers list ID0@192.168.0.1:26656, ID1@192.168.0.2:26656, ...)")
-	cmd.Flags().StringArrayVar(&hostnames, "hostname", []string{},
-		"manually override all hostnames of validators and non-validators (use --hostname multiple times for multiple hosts)")
-	cmd.Flags().IntVar(&p2pPort, "p2p-port", 26656,
-		"P2P Port")
-	cmd.Flags().BoolVar(&randomMonikers, "random-monikers", false,
-		"randomize the moniker for each generated node")
-	cmd.Flags().StringVar(&keyType, "key", types.ABCIPubKeyTypeEd25519,
-		"Key type to generate privval file with. Options: ed25519, secp256k1")
-
-	cmd.RunE = func(cmd *cobra.Command, args []string) error {
-		if len(hostnames) > 0 && len(hostnames) != (nValidators+nNonValidators) {
-			return fmt.Errorf(
-				"testnet needs precisely %d hostnames (number of validators plus non-validators) if --hostname parameter is used",
-				nValidators+nNonValidators,
-			)
-		}
-
-		// set mode to validator for testnet
-		config := cfg.DefaultValidatorConfig()
-
-		// overwrite default config if set and valid
-		if configFile != "" {
-			viper.SetConfigFile(configFile)
-			if err := viper.ReadInConfig(); err != nil {
-				return err
-			}
-			if err := viper.Unmarshal(config); err != nil {
-				return err
-			}
-			if err := config.ValidateBasic(); err != nil {
-				return err
-			}
-		}
-
-		genVals := make([]types.GenesisValidator, nValidators)
-		ctx := cmd.Context()
-		for i := 0; i < nValidators; i++ {
-			nodeDirName := fmt.Sprintf("%s%d", nodeDirPrefix, i)
-			nodeDir := filepath.Join(outputDir, nodeDirName)
-			config.SetRoot(nodeDir)
-
-			err := os.MkdirAll(filepath.Join(nodeDir, "config"), nodeDirPerm)
-			if err != nil {
-				_ = os.RemoveAll(outputDir)
-				return err
-			}
-			err = os.MkdirAll(filepath.Join(nodeDir, "data"), nodeDirPerm)
-			if err != nil {
-				_ = os.RemoveAll(outputDir)
-				return err
-			}
-
-			if err := initFilesWithConfig(ctx, config, logger, keyType); err != nil {
-				return err
-			}
-
-			pvKeyFile := filepath.Join(nodeDir, config.PrivValidator.Key)
-			pvStateFile := filepath.Join(nodeDir, config.PrivValidator.State)
-			pv, err := privval.LoadFilePV(pvKeyFile, pvStateFile)
-			if err != nil {
-				return err
-			}
-
-			ctx, cancel := context.WithTimeout(ctx, ctxTimeout)
-			defer cancel()
-
-			pubKey, err := pv.GetPubKey(ctx)
-			if err != nil {
-				return fmt.Errorf("can't get pubkey: %w", err)
-			}
-			genVals[i] = types.GenesisValidator{
-				Address: pubKey.Address(),
-				PubKey:  pubKey,
-				Power:   1,
-				Name:    nodeDirName,
-			}
-		}
-
-		for i := 0; i < nNonValidators; i++ {
-			nodeDir := filepath.Join(outputDir, fmt.Sprintf("%s%d", nodeDirPrefix, i+nValidators))
-			config.SetRoot(nodeDir)
-
-			err := os.MkdirAll(filepath.Join(nodeDir, "config"), nodeDirPerm)
-			if err != nil {
-				_ = os.RemoveAll(outputDir)
-				return err
-			}
-
-			err = os.MkdirAll(filepath.Join(nodeDir, "data"), nodeDirPerm)
-			if err != nil {
-				_ = os.RemoveAll(outputDir)
-				return err
-			}
-
-			if err := initFilesWithConfig(ctx, conf, logger, keyType); err != nil {
-				return err
-			}
-		}
-
-		// Generate genesis doc from generated validators
-		genDoc := &types.GenesisDoc{
-			ChainID:         "chain-" + tmrand.Str(6),
-			GenesisTime:     tmtime.Now(),
-			InitialHeight:   initialHeight,
-			Validators:      genVals,
-			ConsensusParams: types.DefaultConsensusParams(),
-		}
-		if keyType == "secp256k1" {
-			genDoc.ConsensusParams.Validator = types.ValidatorParams{
-				PubKeyTypes: []string{types.ABCIPubKeyTypeSecp256k1},
-			}
-		}
-
-		// Write genesis file.
-		for i := 0; i < nValidators+nNonValidators; i++ {
-			nodeDir := filepath.Join(outputDir, fmt.Sprintf("%s%d", nodeDirPrefix, i))
-			if err := genDoc.SaveAs(filepath.Join(nodeDir, config.BaseConfig.Genesis)); err != nil {
-				_ = os.RemoveAll(outputDir)
-				return err
-			}
-		}
-
-		// Gather persistent peer addresses.
-		var (
-			persistentPeers = make([]string, 0)
-			err             error
+func testnetFiles(cmd *cobra.Command, args []string) error {
+	if len(hostnames) > 0 && len(hostnames) != (nValidators+nNonValidators) {
+		return fmt.Errorf(
+			"testnet needs precisely %d hostnames (number of validators plus non-validators) if --hostname parameter is used",
+			nValidators+nNonValidators,
 		)
-		tpargs := testnetPeerArgs{
-			numValidators:    nValidators,
-			numNonValidators: nNonValidators,
-			peerToPeerPort:   p2pPort,
-			nodeDirPrefix:    nodeDirPrefix,
-			outputDir:        outputDir,
-			hostnames:        hostnames,
-			startingIPAddr:   startingIPAddress,
-			hostnamePrefix:   hostnamePrefix,
-			hostnameSuffix:   hostnameSuffix,
-			randomMonikers:   randomMonikers,
+	}
+
+	// set mode to validator for testnet
+	config := cfg.DefaultValidatorConfig()
+
+	// overwrite default config if set and valid
+	if configFile != "" {
+		viper.SetConfigFile(configFile)
+		if err := viper.ReadInConfig(); err != nil {
+			return err
+		}
+		if err := viper.Unmarshal(config); err != nil {
+			return err
+		}
+		if err := config.ValidateBasic(); err != nil {
+			return err
+		}
+	}
+
+	genVals := make([]types.GenesisValidator, nValidators)
+
+	for i := 0; i < nValidators; i++ {
+		nodeDirName := fmt.Sprintf("%s%d", nodeDirPrefix, i)
+		nodeDir := filepath.Join(outputDir, nodeDirName)
+		config.SetRoot(nodeDir)
+
+		err := os.MkdirAll(filepath.Join(nodeDir, "config"), nodeDirPerm)
+		if err != nil {
+			_ = os.RemoveAll(outputDir)
+			return err
+		}
+		err = os.MkdirAll(filepath.Join(nodeDir, "data"), nodeDirPerm)
+		if err != nil {
+			_ = os.RemoveAll(outputDir)
+			return err
 		}
 
+		if err := initFilesWithConfig(config); err != nil {
+			return err
+		}
+
+		pvKeyFile := filepath.Join(nodeDir, config.PrivValidator.Key)
+		pvStateFile := filepath.Join(nodeDir, config.PrivValidator.State)
+		pv, err := privval.LoadFilePV(pvKeyFile, pvStateFile)
+		if err != nil {
+			return err
+		}
+
+		ctx, cancel := context.WithTimeout(context.TODO(), ctxTimeout)
+		defer cancel()
+
+		pubKey, err := pv.GetPubKey(ctx)
+		if err != nil {
+			return fmt.Errorf("can't get pubkey: %w", err)
+		}
+		genVals[i] = types.GenesisValidator{
+			Address: pubKey.Address(),
+			PubKey:  pubKey,
+			Power:   1,
+			Name:    nodeDirName,
+		}
+	}
+
+	for i := 0; i < nNonValidators; i++ {
+		nodeDir := filepath.Join(outputDir, fmt.Sprintf("%s%d", nodeDirPrefix, i+nValidators))
+		config.SetRoot(nodeDir)
+
+		err := os.MkdirAll(filepath.Join(nodeDir, "config"), nodeDirPerm)
+		if err != nil {
+			_ = os.RemoveAll(outputDir)
+			return err
+		}
+
+		err = os.MkdirAll(filepath.Join(nodeDir, "data"), nodeDirPerm)
+		if err != nil {
+			_ = os.RemoveAll(outputDir)
+			return err
+		}
+
+		if err := initFilesWithConfig(config); err != nil {
+			return err
+		}
+	}
+
+	// Generate genesis doc from generated validators
+	genDoc := &types.GenesisDoc{
+		ChainID:         "chain-" + tmrand.Str(6),
+		GenesisTime:     tmtime.Now(),
+		InitialHeight:   initialHeight,
+		Validators:      genVals,
+		ConsensusParams: types.DefaultConsensusParams(),
+	}
+	if keyType == "secp256k1" {
+		genDoc.ConsensusParams.Validator = types.ValidatorParams{
+			PubKeyTypes: []string{types.ABCIPubKeyTypeSecp256k1},
+		}
+	}
+
+	// Write genesis file.
+	for i := 0; i < nValidators+nNonValidators; i++ {
+		nodeDir := filepath.Join(outputDir, fmt.Sprintf("%s%d", nodeDirPrefix, i))
+		if err := genDoc.SaveAs(filepath.Join(nodeDir, config.BaseConfig.Genesis)); err != nil {
+			_ = os.RemoveAll(outputDir)
+			return err
+		}
+	}
+
+	// Gather persistent peer addresses.
+	var (
+		persistentPeers = make([]string, 0)
+		err             error
+	)
+	if populatePersistentPeers {
+		persistentPeers, err = persistentPeersArray(config)
+		if err != nil {
+			_ = os.RemoveAll(outputDir)
+			return err
+		}
+	}
+
+	// Overwrite default config.
+	for i := 0; i < nValidators+nNonValidators; i++ {
+		nodeDir := filepath.Join(outputDir, fmt.Sprintf("%s%d", nodeDirPrefix, i))
+		config.SetRoot(nodeDir)
+		config.P2P.AddrBookStrict = false
+		config.P2P.AllowDuplicateIP = true
 		if populatePersistentPeers {
-
-			persistentPeers, err = persistentPeersArray(config, tpargs)
-			if err != nil {
-				_ = os.RemoveAll(outputDir)
-				return err
-			}
-		}
-
-		// Overwrite default config.
-		for i := 0; i < nValidators+nNonValidators; i++ {
-			nodeDir := filepath.Join(outputDir, fmt.Sprintf("%s%d", nodeDirPrefix, i))
-			config.SetRoot(nodeDir)
-			config.P2P.AllowDuplicateIP = true
-			if populatePersistentPeers {
-				persistentPeersWithoutSelf := make([]string, 0)
-				for j := 0; j < len(persistentPeers); j++ {
-					if j == i {
-						continue
-					}
-					persistentPeersWithoutSelf = append(persistentPeersWithoutSelf, persistentPeers[j])
+			persistentPeersWithoutSelf := make([]string, 0)
+			for j := 0; j < len(persistentPeers); j++ {
+				if j == i {
+					continue
 				}
-				config.P2P.PersistentPeers = strings.Join(persistentPeersWithoutSelf, ",")
-			}
-			config.Moniker = tpargs.moniker(i)
-
-			if err := cfg.WriteConfigFile(nodeDir, config); err != nil {
-				return err
+				persistentPeersWithoutSelf = append(persistentPeersWithoutSelf, persistentPeers[j])
 			}
+			config.P2P.PersistentPeers = strings.Join(persistentPeersWithoutSelf, ",")
 		}
+		config.Moniker = moniker(i)
 
-		fmt.Printf("Successfully initialized %v node directories\n", nValidators+nNonValidators)
-		return nil
+		cfg.WriteConfigFile(nodeDir, config)
 	}
 
-	return cmd
+	fmt.Printf("Successfully initialized %v node directories\n", nValidators+nNonValidators)
+	return nil
 }
 
-type testnetPeerArgs struct {
-	numValidators    int
-	numNonValidators int
-	peerToPeerPort   int
-	nodeDirPrefix    string
-	outputDir        string
-	hostnames        []string
-	startingIPAddr   string
-	hostnamePrefix   string
-	hostnameSuffix   string
-	randomMonikers   bool
-}
-
-func (args *testnetPeerArgs) hostnameOrIP(i int) (string, error) {
-	if len(args.hostnames) > 0 && i < len(args.hostnames) {
-		return args.hostnames[i], nil
+func hostnameOrIP(i int) string {
+	if len(hostnames) > 0 && i < len(hostnames) {
+		return hostnames[i]
 	}
-	if args.startingIPAddr == "" {
-		return fmt.Sprintf("%s%d%s", args.hostnamePrefix, i, args.hostnameSuffix), nil
+	if startingIPAddress == "" {
+		return fmt.Sprintf("%s%d%s", hostnamePrefix, i, hostnameSuffix)
 	}
-	ip := net.ParseIP(args.startingIPAddr)
+	ip := net.ParseIP(startingIPAddress)
 	ip = ip.To4()
 	if ip == nil {
-		return "", fmt.Errorf("%v is non-ipv4 address", args.startingIPAddr)
+		fmt.Printf("%v: non ipv4 address\n", startingIPAddress)
+		os.Exit(1)
 	}
 
 	for j := 0; j < i; j++ {
 		ip[3]++
 	}
-	return ip.String(), nil
-
+	return ip.String()
 }
 
 // get an array of persistent peers
-func persistentPeersArray(config *cfg.Config, args testnetPeerArgs) ([]string, error) {
-	peers := make([]string, args.numValidators+args.numNonValidators)
-	for i := 0; i < len(peers); i++ {
-		nodeDir := filepath.Join(args.outputDir, fmt.Sprintf("%s%d", args.nodeDirPrefix, i))
+func persistentPeersArray(config *cfg.Config) ([]string, error) {
+	peers := make([]string, nValidators+nNonValidators)
+	for i := 0; i < nValidators+nNonValidators; i++ {
+		nodeDir := filepath.Join(outputDir, fmt.Sprintf("%s%d", nodeDirPrefix, i))
 		config.SetRoot(nodeDir)
 		nodeKey, err := config.LoadNodeKeyID()
 		if err != nil {
-			return nil, err
+			return []string{}, err
 		}
-		addr, err := args.hostnameOrIP(i)
-		if err != nil {
-			return nil, err
-		}
-
-		peers[i] = nodeKey.AddressString(fmt.Sprintf("%s:%d", addr, args.peerToPeerPort))
+		peers[i] = nodeKey.AddressString(fmt.Sprintf("%s:%d", hostnameOrIP(i), p2pPort))
 	}
 	return peers, nil
 }
 
-func (args *testnetPeerArgs) moniker(i int) string {
-	if args.randomMonikers {
+func moniker(i int) string {
+	if randomMonikers {
 		return randomMoniker()
 	}
-	if len(args.hostnames) > 0 && i < len(args.hostnames) {
-		return args.hostnames[i]
+	if len(hostnames) > 0 && i < len(hostnames) {
+		return hostnames[i]
 	}
-	if args.startingIPAddr == "" {
-		return fmt.Sprintf("%s%d%s", args.hostnamePrefix, i, args.hostnameSuffix)
+	if startingIPAddress == "" {
+		return fmt.Sprintf("%s%d%s", hostnamePrefix, i, hostnameSuffix)
 	}
 	return randomMoniker()
 }

cmd/tendermint/main.go

@@ -1,50 +1,37 @@
 package main
 
 import (
-	"context"
+	"os"
+	"path/filepath"
 
-	"github.com/tendermint/tendermint/cmd/tendermint/commands"
+	cmd "github.com/tendermint/tendermint/cmd/tendermint/commands"
 	"github.com/tendermint/tendermint/cmd/tendermint/commands/debug"
-	"github.com/tendermint/tendermint/config"
+	cfg "github.com/tendermint/tendermint/config"
 	"github.com/tendermint/tendermint/libs/cli"
-	"github.com/tendermint/tendermint/libs/log"
-	"github.com/tendermint/tendermint/node"
+	nm "github.com/tendermint/tendermint/node"
 )
 
 func main() {
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-
-	conf, err := commands.ParseConfig(config.DefaultConfig())
-	if err != nil {
-		panic(err)
-	}
-
-	logger, err := log.NewDefaultLogger(conf.LogFormat, conf.LogLevel)
-	if err != nil {
-		panic(err)
-	}
-
-	rcmd := commands.RootCommand(conf, logger)
-	rcmd.AddCommand(
-		commands.MakeGenValidatorCommand(),
-		commands.MakeReindexEventCommand(conf, logger),
-		commands.MakeInitFilesCommand(conf, logger),
-		commands.MakeLightCommand(conf, logger),
-		commands.MakeReplayCommand(conf, logger),
-		commands.MakeReplayConsoleCommand(conf, logger),
-		commands.MakeResetAllCommand(conf, logger),
-		commands.MakeResetPrivateValidatorCommand(conf, logger),
-		commands.MakeShowValidatorCommand(conf, logger),
-		commands.MakeTestnetFilesCommand(conf, logger),
-		commands.MakeShowNodeIDCommand(conf),
-		commands.GenNodeKeyCmd,
-		commands.VersionCmd,
-		commands.MakeInspectCommand(conf, logger),
-		commands.MakeRollbackStateCommand(conf),
-		commands.MakeKeyMigrateCommand(conf, logger),
-		debug.GetDebugCommand(logger),
-		commands.NewCompletionCmd(rcmd, true),
+	rootCmd := cmd.RootCmd
+	rootCmd.AddCommand(
+		cmd.GenValidatorCmd,
+		cmd.ReIndexEventCmd,
+		cmd.InitFilesCmd,
+		cmd.ProbeUpnpCmd,
+		cmd.LightCmd,
+		cmd.ReplayCmd,
+		cmd.ReplayConsoleCmd,
+		cmd.ResetAllCmd,
+		cmd.ResetPrivValidatorCmd,
+		cmd.ShowValidatorCmd,
+		cmd.TestnetFilesCmd,
+		cmd.ShowNodeIDCmd,
+		cmd.GenNodeKeyCmd,
+		cmd.VersionCmd,
+		cmd.InspectCmd,
+		cmd.MakeKeyMigrateCommand(),
+		debug.DebugCmd,
+		cli.NewCompletionCmd(rootCmd, true),
 	)
 
 	// NOTE:
@@ -55,12 +42,13 @@ func main() {
 	//	* Provide their own DB implementation
 	// can copy this file and use something other than the
 	// node.NewDefault function
-	nodeFunc := node.NewDefault
+	nodeFunc := nm.NewDefault
 
 	// Create & start node
-	rcmd.AddCommand(commands.NewRunNodeCmd(nodeFunc, conf, logger))
+	rootCmd.AddCommand(cmd.NewRunNodeCmd(nodeFunc))
 
-	if err := cli.RunWithTrace(ctx, rcmd); err != nil {
+	cmd := cli.PrepareBaseCmd(rootCmd, "TM", os.ExpandEnv(filepath.Join("$HOME", cfg.DefaultTendermintDir)))
+	if err := cmd.Execute(); err != nil {
 		panic(err)
 	}
 }

config/config.go

@@ -2,14 +2,15 @@ package config
 
 import (
 	"encoding/hex"
-	"encoding/json"
 	"errors"
 	"fmt"
+	"io/ioutil"
 	"net/http"
 	"os"
 	"path/filepath"
 	"time"
 
+	tmjson "github.com/tendermint/tendermint/libs/json"
 	"github.com/tendermint/tendermint/libs/log"
 	tmos "github.com/tendermint/tendermint/libs/os"
 	"github.com/tendermint/tendermint/types"
@@ -27,6 +28,12 @@ const (
 	ModeFull      = "full"
 	ModeValidator = "validator"
 	ModeSeed      = "seed"
+
+	BlockSyncV0 = "v0"
+	BlockSyncV2 = "v2"
+
+	MempoolV0 = "v0"
+	MempoolV1 = "v1"
 )
 
 // NOTE: Most of the structs & relevant comments + the
@@ -47,14 +54,16 @@ var (
 	defaultPrivValKeyName   = "priv_validator_key.json"
 	defaultPrivValStateName = "priv_validator_state.json"
 
-	defaultNodeKeyName = "node_key.json"
+	defaultNodeKeyName  = "node_key.json"
+	defaultAddrBookName = "addrbook.json"
 
 	defaultConfigFilePath   = filepath.Join(defaultConfigDir, defaultConfigFileName)
 	defaultGenesisJSONPath  = filepath.Join(defaultConfigDir, defaultGenesisJSONName)
 	defaultPrivValKeyPath   = filepath.Join(defaultConfigDir, defaultPrivValKeyName)
 	defaultPrivValStatePath = filepath.Join(defaultDataDir, defaultPrivValStateName)
 
-	defaultNodeKeyPath = filepath.Join(defaultConfigDir, defaultNodeKeyName)
+	defaultNodeKeyPath  = filepath.Join(defaultConfigDir, defaultNodeKeyName)
+	defaultAddrBookPath = filepath.Join(defaultConfigDir, defaultAddrBookName)
 )
 
 // Config defines the top level configuration for a Tendermint node
@@ -67,6 +76,7 @@ type Config struct {
 	P2P             *P2PConfig             `mapstructure:"p2p"`
 	Mempool         *MempoolConfig         `mapstructure:"mempool"`
 	StateSync       *StateSyncConfig       `mapstructure:"statesync"`
+	BlockSync       *BlockSyncConfig       `mapstructure:"blocksync"`
 	Consensus       *ConsensusConfig       `mapstructure:"consensus"`
 	TxIndex         *TxIndexConfig         `mapstructure:"tx-index"`
 	Instrumentation *InstrumentationConfig `mapstructure:"instrumentation"`
@@ -81,6 +91,7 @@ func DefaultConfig() *Config {
 		P2P:             DefaultP2PConfig(),
 		Mempool:         DefaultMempoolConfig(),
 		StateSync:       DefaultStateSyncConfig(),
+		BlockSync:       DefaultBlockSyncConfig(),
 		Consensus:       DefaultConsensusConfig(),
 		TxIndex:         DefaultTxIndexConfig(),
 		Instrumentation: DefaultInstrumentationConfig(),
@@ -103,6 +114,7 @@ func TestConfig() *Config {
 		P2P:             TestP2PConfig(),
 		Mempool:         TestMempoolConfig(),
 		StateSync:       TestStateSyncConfig(),
+		BlockSync:       TestBlockSyncConfig(),
 		Consensus:       TestConsensusConfig(),
 		TxIndex:         TestTxIndexConfig(),
 		Instrumentation: TestInstrumentationConfig(),
@@ -130,12 +142,18 @@ func (cfg *Config) ValidateBasic() error {
 	if err := cfg.RPC.ValidateBasic(); err != nil {
 		return fmt.Errorf("error in [rpc] section: %w", err)
 	}
+	if err := cfg.P2P.ValidateBasic(); err != nil {
+		return fmt.Errorf("error in [p2p] section: %w", err)
+	}
 	if err := cfg.Mempool.ValidateBasic(); err != nil {
 		return fmt.Errorf("error in [mempool] section: %w", err)
 	}
 	if err := cfg.StateSync.ValidateBasic(); err != nil {
 		return fmt.Errorf("error in [statesync] section: %w", err)
 	}
+	if err := cfg.BlockSync.ValidateBasic(); err != nil {
+		return fmt.Errorf("error in [blocksync] section: %w", err)
+	}
 	if err := cfg.Consensus.ValidateBasic(); err != nil {
 		return fmt.Errorf("error in [consensus] section: %w", err)
 	}
@@ -265,12 +283,12 @@ func (cfg BaseConfig) NodeKeyFile() string {
 
 // LoadNodeKey loads NodeKey located in filePath.
 func (cfg BaseConfig) LoadNodeKeyID() (types.NodeID, error) {
-	jsonBytes, err := os.ReadFile(cfg.NodeKeyFile())
+	jsonBytes, err := ioutil.ReadFile(cfg.NodeKeyFile())
 	if err != nil {
 		return "", err
 	}
 	nodeKey := types.NodeKey{}
-	err = json.Unmarshal(jsonBytes, &nodeKey)
+	err = tmjson.Unmarshal(jsonBytes, &nodeKey)
 	if err != nil {
 		return "", err
 	}
@@ -321,6 +339,28 @@ func (cfg BaseConfig) ValidateBasic() error {
 		return fmt.Errorf("unknown mode: %v", cfg.Mode)
 	}
 
+	// TODO (https://github.com/tendermint/tendermint/issues/6908) remove this check after the v0.35 release cycle.
+	// This check was added to give users an upgrade prompt to use the new
+	// configuration option in v0.35. In future release cycles they should no longer
+	// be using this configuration parameter so the check can be removed.
+	// The cfg.Other field can likely be removed at the same time if it is not referenced
+	// elsewhere as it was added to service this check.
+	if fs, ok := cfg.Other["fastsync"]; ok {
+		if _, ok := fs.(map[string]interface{}); ok {
+			return fmt.Errorf("a configuration section named 'fastsync' was found in the " +
+				"configuration file. The 'fastsync' section has been renamed to " +
+				"'blocksync', please update the 'fastsync' field in your configuration file to 'blocksync'")
+		}
+	}
+	if fs, ok := cfg.Other["fast-sync"]; ok {
+		if fs != "" {
+			return fmt.Errorf("a parameter named 'fast-sync' was found in the " +
+				"configuration file. The parameter to enable or disable quickly syncing with a blockchain" +
+				"has moved to the [blocksync] section of the configuration file as blocksync.enable. " +
+				"Please move the 'fast-sync' field in your configuration file to 'blocksync.enable'")
+		}
+	}
+
 	return nil
 }
 
@@ -421,10 +461,24 @@ type RPCConfig struct {
 	// A list of non simple headers the client is allowed to use with cross-domain requests.
 	CORSAllowedHeaders []string `mapstructure:"cors-allowed-headers"`
 
+	// TCP or UNIX socket address for the gRPC server to listen on
+	// NOTE: This server only supports /broadcast_tx_commit
+	// Deprecated: gRPC in the RPC layer of Tendermint will be removed in 0.36.
+	GRPCListenAddress string `mapstructure:"grpc-laddr"`
+
+	// Maximum number of simultaneous connections.
+	// Does not include RPC (HTTP&WebSocket) connections. See max-open-connections
+	// If you want to accept a larger number than the default, make sure
+	// you increase your OS limits.
+	// 0 - unlimited.
+	// Deprecated: gRPC in the RPC layer of Tendermint will be removed in 0.36.
+	GRPCMaxOpenConnections int `mapstructure:"grpc-max-open-connections"`
+
 	// Activate unsafe RPC commands like /dial-persistent-peers and /unsafe-flush-mempool
 	Unsafe bool `mapstructure:"unsafe"`
 
 	// Maximum number of simultaneous connections (including WebSocket).
+	// Does not include gRPC connections. See grpc-max-open-connections
 	// If you want to accept a larger number than the default, make sure
 	// you increase your OS limits.
 	// 0 - unlimited.
@@ -438,37 +492,10 @@ type RPCConfig struct {
 	MaxSubscriptionClients int `mapstructure:"max-subscription-clients"`
 
 	// Maximum number of unique queries a given client can /subscribe to
-	// If you're using a Local RPC client and /broadcast_tx_commit, set this
+	// If you're using GRPC (or Local RPC client) and /broadcast_tx_commit, set
 	// to the estimated maximum number of broadcast_tx_commit calls per block.
 	MaxSubscriptionsPerClient int `mapstructure:"max-subscriptions-per-client"`
 
-	// If true, disable the websocket interface to the RPC service.  This has
-	// the effect of disabling the /subscribe, /unsubscribe, and /unsubscribe_all
-	// methods for event subscription.
-	//
-	// EXPERIMENTAL: This setting will be removed in Tendermint v0.37.
-	ExperimentalDisableWebsocket bool `mapstructure:"experimental-disable-websocket"`
-
-	// The time window size for the event log. All events up to this long before
-	// the latest (up to EventLogMaxItems) will be available for subscribers to
-	// fetch via the /events method.  If 0 (the default) the event log and the
-	// /events RPC method are disabled.
-	EventLogWindowSize time.Duration `mapstructure:"event-log-window-size"`
-
-	// The maxiumum number of events that may be retained by the event log.  If
-	// this value is 0, no upper limit is set. Otherwise, items in excess of
-	// this number will be discarded from the event log.
-	//
-	// Warning: This setting is a safety valve. Setting it too low may cause
-	// subscribers to miss events.  Try to choose a value higher than the
-	// maximum worst-case expected event load within the chosen window size in
-	// ordinary operation.
-	//
-	// For example, if the window size is 10 minutes and the node typically
-	// averages 1000 events per ten minutes, but with occasional known spikes of
-	// up to 2000, choose a value > 2000.
-	EventLogMaxItems int `mapstructure:"event-log-max-items"`
-
 	// How long to wait for a tx to be committed during /broadcast_tx_commit
 	// WARNING: Using a value larger than 10s will result in increasing the
 	// global HTTP write timeout, which applies to all connections and endpoints.
@@ -506,22 +533,19 @@ type RPCConfig struct {
 // DefaultRPCConfig returns a default configuration for the RPC server
 func DefaultRPCConfig() *RPCConfig {
 	return &RPCConfig{
-		ListenAddress:      "tcp://127.0.0.1:26657",
-		CORSAllowedOrigins: []string{},
-		CORSAllowedMethods: []string{http.MethodHead, http.MethodGet, http.MethodPost},
-		CORSAllowedHeaders: []string{"Origin", "Accept", "Content-Type", "X-Requested-With", "X-Server-Time"},
+		ListenAddress:          "tcp://127.0.0.1:26657",
+		CORSAllowedOrigins:     []string{},
+		CORSAllowedMethods:     []string{http.MethodHead, http.MethodGet, http.MethodPost},
+		CORSAllowedHeaders:     []string{"Origin", "Accept", "Content-Type", "X-Requested-With", "X-Server-Time"},
+		GRPCListenAddress:      "",
+		GRPCMaxOpenConnections: 900,
 
 		Unsafe:             false,
 		MaxOpenConnections: 900,
 
-		// Settings for event subscription.
-		MaxSubscriptionClients:       100,
-		MaxSubscriptionsPerClient:    5,
-		ExperimentalDisableWebsocket: false, // compatible with TM v0.35 and earlier
-		EventLogWindowSize:           0,     // disables /events RPC by default
-		EventLogMaxItems:             0,
-
-		TimeoutBroadcastTxCommit: 10 * time.Second,
+		MaxSubscriptionClients:    100,
+		MaxSubscriptionsPerClient: 5,
+		TimeoutBroadcastTxCommit:  10 * time.Second,
 
 		MaxBodyBytes:   int64(1000000), // 1MB
 		MaxHeaderBytes: 1 << 20,        // same as the net/http default
@@ -535,6 +559,7 @@ func DefaultRPCConfig() *RPCConfig {
 func TestRPCConfig() *RPCConfig {
 	cfg := DefaultRPCConfig()
 	cfg.ListenAddress = "tcp://127.0.0.1:36657"
+	cfg.GRPCListenAddress = "tcp://127.0.0.1:36658"
 	cfg.Unsafe = true
 	return cfg
 }
@@ -542,6 +567,9 @@ func TestRPCConfig() *RPCConfig {
 // ValidateBasic performs basic validation (checking param bounds, etc.) and
 // returns an error if any check fails.
 func (cfg *RPCConfig) ValidateBasic() error {
+	if cfg.GRPCMaxOpenConnections < 0 {
+		return errors.New("grpc-max-open-connections can't be negative")
+	}
 	if cfg.MaxOpenConnections < 0 {
 		return errors.New("max-open-connections can't be negative")
 	}
@@ -551,12 +579,6 @@ func (cfg *RPCConfig) ValidateBasic() error {
 	if cfg.MaxSubscriptionsPerClient < 0 {
 		return errors.New("max-subscriptions-per-client can't be negative")
 	}
-	if cfg.EventLogWindowSize < 0 {
-		return errors.New("event-log-window-size must not be negative")
-	}
-	if cfg.EventLogMaxItems < 0 {
-		return errors.New("event-log-max-items must not be negative")
-	}
 	if cfg.TimeoutBroadcastTxCommit < 0 {
 		return errors.New("timeout-broadcast-tx-commit can't be negative")
 	}
@@ -609,11 +631,9 @@ type P2PConfig struct { //nolint: maligned
 
 	// Comma separated list of seed nodes to connect to
 	// We only use these if we can’t connect to peers in the addrbook
-	//
-	// Deprecated: This value is not used by the new PEX reactor. Use
-	// BootstrapPeers instead.
-	//
-	// TODO(#5670): Remove once the p2p refactor is complete.
+	// NOTE: not used by the new PEX reactor. Please use BootstrapPeers instead.
+	// TODO: Remove once p2p refactor is complete
+	// ref: https://github.com/tendermint/tendermint/issues/5670
 	Seeds string `mapstructure:"seeds"`
 
 	// Comma separated list of peers to be added to the peer store
@@ -627,6 +647,25 @@ type P2PConfig struct { //nolint: maligned
 	// UPNP port forwarding
 	UPNP bool `mapstructure:"upnp"`
 
+	// Path to address book
+	AddrBook string `mapstructure:"addr-book-file"`
+
+	// Set true for strict address routability rules
+	// Set false for private or local networks
+	AddrBookStrict bool `mapstructure:"addr-book-strict"`
+
+	// Maximum number of inbound peers
+	//
+	// TODO: Remove once p2p refactor is complete in favor of MaxConnections.
+	// ref: https://github.com/tendermint/tendermint/issues/5670
+	MaxNumInboundPeers int `mapstructure:"max-num-inbound-peers"`
+
+	// Maximum number of outbound peers to connect to, excluding persistent peers.
+	//
+	// TODO: Remove once p2p refactor is complete in favor of MaxConnections.
+	// ref: https://github.com/tendermint/tendermint/issues/5670
+	MaxNumOutboundPeers int `mapstructure:"max-num-outbound-peers"`
+
 	// MaxConnections defines the maximum number of connected peers (inbound and
 	// outbound).
 	MaxConnections uint16 `mapstructure:"max-connections"`
@@ -635,15 +674,11 @@ type P2PConfig struct { //nolint: maligned
 	// attempts per IP address.
 	MaxIncomingConnectionAttempts uint `mapstructure:"max-incoming-connection-attempts"`
 
-	// Set true to enable the peer-exchange reactor
-	PexReactor bool `mapstructure:"pex"`
+	// List of node IDs, to which a connection will be (re)established ignoring any existing limits
+	UnconditionalPeerIDs string `mapstructure:"unconditional-peer-ids"`
 
-	// Comma separated list of peer IDs to keep private (will not be gossiped to
-	// other peers)
-	PrivatePeerIDs string `mapstructure:"private-peer-ids"`
-
-	// Toggle to disable guard against peers connecting from the same ip.
-	AllowDuplicateIP bool `mapstructure:"allow-duplicate-ip"`
+	// Maximum pause when redialing a persistent peer (if zero, exponential backoff is used)
+	PersistentPeersMaxDialPeriod time.Duration `mapstructure:"persistent-peers-max-dial-period"`
 
 	// Time to wait before flushing messages out on the connection
 	FlushThrottleTimeout time.Duration `mapstructure:"flush-throttle-timeout"`
@@ -657,6 +692,16 @@ type P2PConfig struct { //nolint: maligned
 	// Rate at which packets can be received, in bytes/second
 	RecvRate int64 `mapstructure:"recv-rate"`
 
+	// Set true to enable the peer-exchange reactor
+	PexReactor bool `mapstructure:"pex"`
+
+	// Comma separated list of peer IDs to keep private (will not be gossiped to
+	// other peers)
+	PrivatePeerIDs string `mapstructure:"private-peer-ids"`
+
+	// Toggle to disable guard against peers connecting from the same ip.
+	AllowDuplicateIP bool `mapstructure:"allow-duplicate-ip"`
+
 	// Peer connection configuration.
 	HandshakeTimeout time.Duration `mapstructure:"handshake-timeout"`
 	DialTimeout      time.Duration `mapstructure:"dial-timeout"`
@@ -665,8 +710,13 @@ type P2PConfig struct { //nolint: maligned
 	// Force dial to fail
 	TestDialFail bool `mapstructure:"test-dial-fail"`
 
+	// UseLegacy enables the "legacy" P2P implementation and
+	// disables the newer default implementation. This flag will
+	// be removed in a future release.
+	UseLegacy bool `mapstructure:"use-legacy"`
+
 	// Makes it possible to configure which queue backend the p2p
-	// layer uses. Options are: "fifo" and "priority",
+	// layer uses. Options are: "fifo", "priority" and "wdrr",
 	// with the default being "priority".
 	QueueType string `mapstructure:"queue-type"`
 }
@@ -677,8 +727,13 @@ func DefaultP2PConfig() *P2PConfig {
 		ListenAddress:                 "tcp://0.0.0.0:26656",
 		ExternalAddress:               "",
 		UPNP:                          false,
+		AddrBook:                      defaultAddrBookPath,
+		AddrBookStrict:                true,
+		MaxNumInboundPeers:            40,
+		MaxNumOutboundPeers:           10,
 		MaxConnections:                64,
 		MaxIncomingConnectionAttempts: 100,
+		PersistentPeersMaxDialPeriod:  0 * time.Second,
 		FlushThrottleTimeout:          100 * time.Millisecond,
 		// The MTU (Maximum Transmission Unit) for Ethernet is 1500 bytes.
 		// The IP header and the TCP header take up 20 bytes each at least (unless
@@ -694,15 +749,39 @@ func DefaultP2PConfig() *P2PConfig {
 		DialTimeout:             3 * time.Second,
 		TestDialFail:            false,
 		QueueType:               "priority",
+		UseLegacy:               false,
 	}
 }
 
+// TestP2PConfig returns a configuration for testing the peer-to-peer layer
+func TestP2PConfig() *P2PConfig {
+	cfg := DefaultP2PConfig()
+	cfg.ListenAddress = "tcp://127.0.0.1:36656"
+	cfg.FlushThrottleTimeout = 10 * time.Millisecond
+	cfg.AllowDuplicateIP = true
+	return cfg
+}
+
+// AddrBookFile returns the full path to the address book
+func (cfg *P2PConfig) AddrBookFile() string {
+	return rootify(cfg.AddrBook, cfg.RootDir)
+}
+
 // ValidateBasic performs basic validation (checking param bounds, etc.) and
 // returns an error if any check fails.
 func (cfg *P2PConfig) ValidateBasic() error {
+	if cfg.MaxNumInboundPeers < 0 {
+		return errors.New("max-num-inbound-peers can't be negative")
+	}
+	if cfg.MaxNumOutboundPeers < 0 {
+		return errors.New("max-num-outbound-peers can't be negative")
+	}
 	if cfg.FlushThrottleTimeout < 0 {
 		return errors.New("flush-throttle-timeout can't be negative")
 	}
+	if cfg.PersistentPeersMaxDialPeriod < 0 {
+		return errors.New("persistent-peers-max-dial-period can't be negative")
+	}
 	if cfg.MaxPacketMsgPayloadSize < 0 {
 		return errors.New("max-packet-msg-payload-size can't be negative")
 	}
@@ -715,20 +794,12 @@ func (cfg *P2PConfig) ValidateBasic() error {
 	return nil
 }
 
-// TestP2PConfig returns a configuration for testing the peer-to-peer layer
-func TestP2PConfig() *P2PConfig {
-	cfg := DefaultP2PConfig()
-	cfg.ListenAddress = "tcp://127.0.0.1:36656"
-	cfg.AllowDuplicateIP = true
-	cfg.FlushThrottleTimeout = 10 * time.Millisecond
-	return cfg
-}
-
 //-----------------------------------------------------------------------------
 // MempoolConfig
 
 // MempoolConfig defines the configuration options for the Tendermint mempool.
 type MempoolConfig struct {
+	Version   string `mapstructure:"version"`
 	RootDir   string `mapstructure:"home"`
 	Recheck   bool   `mapstructure:"recheck"`
 	Broadcast bool   `mapstructure:"broadcast"`
@@ -778,6 +849,7 @@ type MempoolConfig struct {
 // DefaultMempoolConfig returns a default configuration for the Tendermint mempool.
 func DefaultMempoolConfig() *MempoolConfig {
 	return &MempoolConfig{
+		Version:   MempoolV1,
 		Recheck:   true,
 		Broadcast: true,
 		// Each signature verification takes .5ms, Size reduced until we implement
@@ -946,6 +1018,42 @@ func (cfg *StateSyncConfig) ValidateBasic() error {
 	return nil
 }
 
+//-----------------------------------------------------------------------------
+
+// BlockSyncConfig (formerly known as FastSync) defines the configuration for the Tendermint block sync service
+// If this node is many blocks behind the tip of the chain, BlockSync
+// allows them to catchup quickly by downloading blocks in parallel
+// and verifying their commits.
+type BlockSyncConfig struct {
+	Enable  bool   `mapstructure:"enable"`
+	Version string `mapstructure:"version"`
+}
+
+// DefaultBlockSyncConfig returns a default configuration for the block sync service
+func DefaultBlockSyncConfig() *BlockSyncConfig {
+	return &BlockSyncConfig{
+		Enable:  true,
+		Version: BlockSyncV0,
+	}
+}
+
+// TestBlockSyncConfig returns a default configuration for the block sync.
+func TestBlockSyncConfig() *BlockSyncConfig {
+	return DefaultBlockSyncConfig()
+}
+
+// ValidateBasic performs basic validation.
+func (cfg *BlockSyncConfig) ValidateBasic() error {
+	switch cfg.Version {
+	case BlockSyncV0:
+		return nil
+	case BlockSyncV2:
+		return errors.New("blocksync version v2 is no longer supported. Please use v0")
+	default:
+		return fmt.Errorf("unknown blocksync version %s", cfg.Version)
+	}
+}
+
 //-----------------------------------------------------------------------------
 // ConsensusConfig
 

config/config_test.go

@@ -10,19 +10,21 @@ import (
 )
 
 func TestDefaultConfig(t *testing.T) {
+	assert := assert.New(t)
+
 	// set up some defaults
 	cfg := DefaultConfig()
-	assert.NotNil(t, cfg.P2P)
-	assert.NotNil(t, cfg.Mempool)
-	assert.NotNil(t, cfg.Consensus)
+	assert.NotNil(cfg.P2P)
+	assert.NotNil(cfg.Mempool)
+	assert.NotNil(cfg.Consensus)
 
 	// check the root dir stuff...
 	cfg.SetRoot("/foo")
 	cfg.Genesis = "bar"
 	cfg.DBPath = "/opt/data"
 
-	assert.Equal(t, "/foo/bar", cfg.GenesisFile())
-	assert.Equal(t, "/opt/data", cfg.DBDir())
+	assert.Equal("/foo/bar", cfg.GenesisFile())
+	assert.Equal("/opt/data", cfg.DBDir())
 }
 
 func TestConfigValidateBasic(t *testing.T) {
@@ -35,18 +37,19 @@ func TestConfigValidateBasic(t *testing.T) {
 }
 
 func TestTLSConfiguration(t *testing.T) {
+	assert := assert.New(t)
 	cfg := DefaultConfig()
 	cfg.SetRoot("/home/user")
 
 	cfg.RPC.TLSCertFile = "file.crt"
-	assert.Equal(t, "/home/user/config/file.crt", cfg.RPC.CertFile())
+	assert.Equal("/home/user/config/file.crt", cfg.RPC.CertFile())
 	cfg.RPC.TLSKeyFile = "file.key"
-	assert.Equal(t, "/home/user/config/file.key", cfg.RPC.KeyFile())
+	assert.Equal("/home/user/config/file.key", cfg.RPC.KeyFile())
 
 	cfg.RPC.TLSCertFile = "/abs/path/to/file.crt"
-	assert.Equal(t, "/abs/path/to/file.crt", cfg.RPC.CertFile())
+	assert.Equal("/abs/path/to/file.crt", cfg.RPC.CertFile())
 	cfg.RPC.TLSKeyFile = "/abs/path/to/file.key"
-	assert.Equal(t, "/abs/path/to/file.key", cfg.RPC.KeyFile())
+	assert.Equal("/abs/path/to/file.key", cfg.RPC.KeyFile())
 }
 
 func TestBaseConfigValidateBasic(t *testing.T) {
@@ -63,6 +66,7 @@ func TestRPCConfigValidateBasic(t *testing.T) {
 	assert.NoError(t, cfg.ValidateBasic())
 
 	fieldsToTest := []string{
+		"GRPCMaxOpenConnections",
 		"MaxOpenConnections",
 		"MaxSubscriptionClients",
 		"MaxSubscriptionsPerClient",
@@ -78,6 +82,26 @@ func TestRPCConfigValidateBasic(t *testing.T) {
 	}
 }
 
+func TestP2PConfigValidateBasic(t *testing.T) {
+	cfg := TestP2PConfig()
+	assert.NoError(t, cfg.ValidateBasic())
+
+	fieldsToTest := []string{
+		"MaxNumInboundPeers",
+		"MaxNumOutboundPeers",
+		"FlushThrottleTimeout",
+		"MaxPacketMsgPayloadSize",
+		"SendRate",
+		"RecvRate",
+	}
+
+	for _, fieldName := range fieldsToTest {
+		reflect.ValueOf(cfg).Elem().FieldByName(fieldName).SetInt(-1)
+		assert.Error(t, cfg.ValidateBasic())
+		reflect.ValueOf(cfg).Elem().FieldByName(fieldName).SetInt(0)
+	}
+}
+
 func TestMempoolConfigValidateBasic(t *testing.T) {
 	cfg := TestMempoolConfig()
 	assert.NoError(t, cfg.ValidateBasic())
@@ -101,7 +125,20 @@ func TestStateSyncConfigValidateBasic(t *testing.T) {
 	require.NoError(t, cfg.ValidateBasic())
 }
 
+func TestBlockSyncConfigValidateBasic(t *testing.T) {
+	cfg := TestBlockSyncConfig()
+	assert.NoError(t, cfg.ValidateBasic())
+
+	// tamper with version
+	cfg.Version = "v2"
+	assert.Error(t, cfg.ValidateBasic())
+
+	cfg.Version = "invalid"
+	assert.Error(t, cfg.ValidateBasic())
+}
+
 func TestConsensusConfig_ValidateBasic(t *testing.T) {
+	// nolint: lll
 	testcases := map[string]struct {
 		modify    func(*ConsensusConfig)
 		expectErr bool
@@ -150,21 +187,3 @@ func TestInstrumentationConfigValidateBasic(t *testing.T) {
 	cfg.MaxOpenConnections = -1
 	assert.Error(t, cfg.ValidateBasic())
 }
-
-func TestP2PConfigValidateBasic(t *testing.T) {
-	cfg := TestP2PConfig()
-	assert.NoError(t, cfg.ValidateBasic())
-
-	fieldsToTest := []string{
-		"FlushThrottleTimeout",
-		"MaxPacketMsgPayloadSize",
-		"SendRate",
-		"RecvRate",
-	}
-
-	for _, fieldName := range fieldsToTest {
-		reflect.ValueOf(cfg).Elem().FieldByName(fieldName).SetInt(-1)
-		assert.Error(t, cfg.ValidateBasic())
-		reflect.ValueOf(cfg).Elem().FieldByName(fieldName).SetInt(0)
-	}
-}

config/db.go

@@ -1,16 +1,13 @@
 package config
 
 import (
-	"context"
-
-	dbm "github.com/tendermint/tm-db"
-
 	"github.com/tendermint/tendermint/libs/log"
 	"github.com/tendermint/tendermint/libs/service"
+	db "github.com/tendermint/tm-db"
 )
 
 // ServiceProvider takes a config and a logger and returns a ready to go Node.
-type ServiceProvider func(context.Context, *Config, log.Logger) (service.Service, error)
+type ServiceProvider func(*Config, log.Logger) (service.Service, error)
 
 // DBContext specifies config information for loading a new DB.
 type DBContext struct {
@@ -19,11 +16,11 @@ type DBContext struct {
 }
 
 // DBProvider takes a DBContext and returns an instantiated DB.
-type DBProvider func(*DBContext) (dbm.DB, error)
+type DBProvider func(*DBContext) (db.DB, error)
 
 // DefaultDBProvider returns a database using the DBBackend and DBDir
 // specified in the Config.
-func DefaultDBProvider(ctx *DBContext) (dbm.DB, error) {
-	dbType := dbm.BackendType(ctx.Config.DBBackend)
-	return dbm.NewDB(ctx.ID, dbType, ctx.Config.DBDir())
+func DefaultDBProvider(ctx *DBContext) (db.DB, error) {
+	dbType := db.BackendType(ctx.Config.DBBackend)
+	return db.NewDB(ctx.ID, dbType, ctx.Config.DBDir())
 }