Revert "consensus: correctly save reference to previous height precommits (backport #9760) (#9775)" (#9945)

This reverts commit 5703cc3455.

.github/CODEOWNERS

@@ -7,4 +7,6 @@
 # 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.
-*       @alexanderbez @ebuchman @cmwaters @tessr @tychoish @williambanfield @creachadair
+*     @ebuchman @tendermint/tendermint-engineering @adizere @lasarojc
+
+/spec @ebuchman @tendermint/tendermint-research @tendermint/tendermint-engineering @adizere @lasarojc

.github/ISSUE_TEMPLATE/bug-report.md

@@ -1,13 +1,18 @@
 ---
-name: Bug Report
+name: Bug report
 about: Create a report to help us squash bugs!
 
 ---
 <!--
+
 Please fill in as much of the template below as you can.
 
-Be ready for followup questions, and please respond in a timely
-manner. We might ask you to provide additional logs and data (tendermint & app).
+If you have general questions, please create a new discussion:
+https://github.com/tendermint/tendermint/discussions
+
+Be ready for followup questions, and please respond in a timely manner. We might
+ask you to provide additional logs and data (tendermint & app).
+
 -->
 
 **Tendermint version** (use `tendermint version` or `git rev-parse --verify HEAD` if installed from source):

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,5 @@
+blank_issues_enabled: true
+contact_links:
+  - name: Ask a question
+    url: https://github.com/tendermint/tendermint/discussions
+    about: Please ask and answer questions here

.github/ISSUE_TEMPLATE/feature-request.md

@@ -1,5 +1,5 @@
 ---
-name: Feature Request
+name: Feature request
 about: Create a proposal to request a feature
 
 ---
@@ -25,12 +25,3 @@ Are there any disadvantages of including this feature? -->
 ## Proposal
 
 <!-- Detailed description of requirements of implementation -->
-
-____
-
-#### For Admin Use
-
-- [ ] Not duplicate issue
-- [ ] Appropriate labels applied
-- [ ] Appropriate contributors tagged
-- [ ] Contributor assigned/self-assigned

.github/ISSUE_TEMPLATE/proposal.md

@@ -0,0 +1,28 @@
+---
+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 -->

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,7 +1,32 @@
-Please add a description of the changes that this PR introduces and the files that
-are the most critical to review.
+<!--
 
-If this PR fixes an open Issue, please include "Closes #XXX" (where "XXX" is the Issue number) 
-so that GitHub will automatically close the Issue when this PR is merged.
+Please add a reference to the issue that this PR addresses and indicate which
+files are most critical to review. If it fully addresses a particular issue,
+please include "Closes #XXX" (where "XXX" is the issue number).
 
+If this PR is non-trivial/large/complex, please ensure that you have either
+created an issue that the team's had a chance to respond to, or had some
+discussion with the team prior to submitting substantial pull requests. The team
+can be reached via GitHub Discussions or the Cosmos Network Discord server in
+the #tendermint-core channel. GitHub Discussions is preferred over Discord as it
+allows us to keep track of conversations topically.
+https://github.com/tendermint/tendermint/discussions
+
+If the work in this PR is not aligned with the team's current priorities, please
+be advised that it may take some time before it is merged - especially if it has
+not yet been discussed with the team.
+
+See the project board for the team's current priorities:
+https://github.com/orgs/tendermint/projects/15/views/5
+
+-->
+
+---
+
+#### PR checklist
+
+- [ ] Tests written/updated, or no tests needed
+- [ ] `CHANGELOG_PENDING.md` updated, or no changelog entry needed
+- [ ] Updated relevant documentation (`docs/`) and code comments, or no
+      documentation updates needed
 

.github/auto-comment.yml

@@ -1,16 +0,0 @@
-pullRequestOpened: |
-  :wave: Thanks for creating a PR!   
-
-  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.   
-
-  - [ ] 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:   

.github/dependabot.yml

@@ -3,25 +3,49 @@ updates:
   - package-ecosystem: github-actions
     directory: "/"
     schedule:
-      interval: daily
-      time: "11:00"
+      interval: weekly
+    target-branch: "main"
     open-pull-requests-limit: 10
+    labels:
+      - T:dependencies
+      - S:automerge
+
+  - package-ecosystem: github-actions
+    directory: "/"
+    schedule:
+      interval: weekly
+    target-branch: "v0.34.x"
+    open-pull-requests-limit: 10
+    labels:
+      - T:dependencies
+      - S:automerge
+
   - package-ecosystem: npm
     directory: "/docs"
     schedule:
-      interval: daily
-      time: "11:00"
+      interval: weekly
     open-pull-requests-limit: 10
-    reviewers:
-      - fadeev
+
+  ###################################
+  ##
+  ## Update All Go Dependencies
+
   - package-ecosystem: gomod
     directory: "/"
     schedule:
-      interval: daily
-      time: "11:00"
+      interval: weekly
+    target-branch: "main"
     open-pull-requests-limit: 10
-    reviewers:
-      - melekes
-      - tessr
     labels:
       - T:dependencies
+      - S:automerge
+
+  - package-ecosystem: gomod
+    directory: "/"
+    schedule:
+      interval: weekly
+    target-branch: "v0.34.x"
+    open-pull-requests-limit: 10
+    labels:
+      - T:dependencies
+      - S:automerge

.github/issue_template.md

@@ -0,0 +1,6 @@
+<!--
+
+If you want to ask a general question, please create a new discussion instead of
+an issue: https://github.com/tendermint/tendermint/discussions
+
+-->

.github/linter/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/markdownlint.yml

@@ -0,0 +1,15 @@
+# markdownlint configuration for Super-Linter
+# - https://github.com/DavidAnson/markdownlint
+# - https://github.com/github/super-linter
+
+# Default state for all rules
+default: true
+
+# See https://github.com/DavidAnson/markdownlint#rules--aliases for rules
+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

@@ -0,0 +1,9 @@
+---
+# 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

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

.github/workflows/build.yml

@@ -0,0 +1,82 @@
+name: Build
+# Tests runs different tests (test_abci_apps, test_abci_cli, test_apps)
+# This workflow runs on every push to main 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:
+      - main
+      - 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@v3
+        with:
+          go-version: "1.18"
+      - uses: actions/checkout@v3
+      - uses: technote-space/get-diff-action@v6
+        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@v3
+        with:
+          go-version: "1.18"
+      - uses: actions/checkout@v3
+      - uses: technote-space/get-diff-action@v6
+        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@v3
+        with:
+          go-version: "1.18"
+      - uses: actions/checkout@v3
+      - uses: technote-space/get-diff-action@v6
+        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/check-generated.yml

@@ -0,0 +1,73 @@
+# Verify that generated code is up-to-date.
+#
+# Note that we run these checks regardless whether the input files have
+# changed, because generated code can change in response to toolchain updates
+# even if no files in the repository are modified.
+name: Check generated code
+on:
+  pull_request:
+    branches:
+      - main
+
+permissions:
+  contents: read
+
+jobs:
+  check-mocks:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/setup-go@v3
+        with:
+          go-version: "1.18"
+
+      - uses: actions/checkout@v3
+
+      - name: "Check generated mocks"
+        run: |
+          set -euo pipefail
+
+          make mockery 2>/dev/null
+
+          if ! git diff --stat --exit-code ; then
+            echo ">> ERROR:"
+            echo ">>"
+            echo ">> Generated mocks require update (either Mockery or source files may have changed)."
+            echo ">> Ensure your tools are up-to-date, re-run 'make mockery' and update this PR."
+            echo ">>"
+            exit 1
+          fi
+
+  check-proto:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/setup-go@v3
+        with:
+          go-version: "1.18"
+
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 1 # we need a .git directory to run git diff
+
+      - name: "Check protobuf generated code"
+        run: |
+          set -euo pipefail
+
+          # Install buf and gogo tools, so that differences that arise from
+          # toolchain differences are also caught.
+          readonly tools="$(mktemp -d)"
+          export PATH="${PATH}:${tools}/bin"
+          export GOBIN="${tools}/bin"
+
+          go install github.com/bufbuild/buf/cmd/buf
+          go install github.com/cosmos/gogoproto/protoc-gen-gogofaster@latest
+
+          make proto-gen
+
+          if ! git diff --stat --exit-code ; then
+            echo ">> ERROR:"
+            echo ">>"
+            echo ">> Protobuf generated code requires update (either tools or .proto files may have changed)."
+            echo ">> Ensure your tools are up-to-date, re-run 'make proto-gen' and update this PR."
+            echo ">>"
+            exit 1
+          fi

.github/workflows/coverage.yml

@@ -1,133 +0,0 @@
-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/docs-deployment.yml

@@ -0,0 +1,65 @@
+# Build and deploy the docs.tendermint.com website content.
+# The static content is published to GitHub Pages.
+#
+# For documentation build info, see docs/DOCS_README.md.
+name: Build static documentation site
+on:
+  workflow_dispatch:  # allow manual updates
+  push:
+    branches:
+      - main
+      - v0.34.x
+    paths:
+      - docs/**
+      - spec/**
+
+jobs:
+  # This is split into two jobs so that the build, which runs npm, does not
+  # have write access to anything. The deploy requires write access to publish
+  # to the branch used by GitHub Pages, however, so we can't just make the
+  # whole workflow read-only.
+  build:
+    name: VuePress build
+    runs-on: ubuntu-latest
+    container:
+      image: alpine:latest
+    permissions:
+      contents: read
+    steps:
+      - name: Install generator dependencies
+        run: |
+          apk add --no-cache make bash git npm
+      - uses: actions/checkout@v3
+        with:
+          # We need to fetch full history so the backport branches for previous
+          # versions will be available for the build.
+          fetch-depth: 0
+      - name: Build documentation
+        env:
+          NODE_OPTIONS: "--openssl-legacy-provider"
+        run: |
+          git config --global --add safe.directory "$PWD"
+          make build-docs
+      - uses: actions/upload-artifact@v3
+        with:
+          name: build-output
+          path: /tmp/tendermint-core-docs
+
+  deploy:
+    name: Deploy to GitHub Pages
+    runs-on: ubuntu-latest
+    needs: build
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/download-artifact@v3
+        with:
+          name: build-output
+          path: ~/output
+      - name: Deploy to GitHub Pages
+        uses: JamesIves/github-pages-deploy-action@v4
+        with:
+          branch: 'docs-tendermint-com'
+          folder: ~/output
+          single-commit: true

.github/workflows/docs-toc.yml

@@ -0,0 +1,20 @@
+# Verify that important design docs have ToC entries.
+name: Check documentation ToC
+on:
+  pull_request:
+    push:
+      branches:
+        - main
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: technote-space/get-diff-action@v6
+        with:
+          PATTERNS: |
+            docs/architecture/**
+            docs/rfc/**
+      - run: make check-docs-toc
+        if: env.GIT_DIFF

.github/workflows/e2e-manual.yml

@@ -0,0 +1,36 @@
+# Runs randomly generated E2E testnets nightly on main
+# 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@v3
+        with:
+          go-version: '1.18'
+
+      - uses: actions/checkout@v3
+
+      - 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 5 -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

@@ -1,12 +1,10 @@
-# Runs randomly generated E2E testnets nightly
-# on the 0.34.x release branch
+# Runs randomly generated E2E testnets nightly on the 0.34.x branch.
 
-# !! If you change something in this file, you probably want
-# to update the e2e-nightly-master workflow as well!
+# !! This file should be kept in sync with the e2e-nightly-main.yml file,
+# modulo changes to the version labels.
 
 name: e2e-nightly-34x
 on:
-  workflow_dispatch: # allow running workflow manually, in theory
   schedule:
     - cron: '0 2 * * *'
 
@@ -17,18 +15,24 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        group: ['00', '01', '02', '03']
+        group: ['00', '01']
     runs-on: ubuntu-latest
     timeout-minutes: 60
     steps:
-      - uses: actions/setup-go@v2
+      - uses: actions/setup-go@v3
         with:
-          go-version: '1.16'
+          go-version: '1.18'
 
-      - uses: actions/checkout@v2.3.4
+      - uses: actions/checkout@v3
         with:
           ref: 'v0.34.x'
 
+      - name: Capture git repo info
+        id: git-info
+        run: |
+          echo "::set-output name=branch::`git branch --show-current`"
+          echo "::set-output name=commit::`git rev-parse HEAD`"
+
       - name: Build
         working-directory: test/e2e
         # Run make jobs in parallel, since we can't run steps in parallel.
@@ -37,40 +41,64 @@ 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
 
       - name: Run testnets in group ${{ matrix.group }}
         working-directory: test/e2e
         run: ./run-multiple.sh networks/nightly/*-group${{ matrix.group }}-*.toml
 
+    outputs:
+      git-branch: ${{ steps.git-info.outputs.branch }}
+      git-commit: ${{ steps.git-info.outputs.commit }}
+
   e2e-nightly-fail:
     needs: e2e-nightly-test
     if: ${{ failure() }}
     runs-on: ubuntu-latest
     steps:
       - name: Notify Slack on failure
-        uses: rtCamp/action-slack-notify@12e36fc18b0689399306c2e0b3e0f2978b7f1ee7
+        uses: slackapi/slack-github-action@v1.23.0
         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 v0.34.x
-          SLACK_FOOTER: ''
+          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
+          SLACK_WEBHOOK_TYPE: INCOMING_WEBHOOK
+          BRANCH: ${{ needs.e2e-nightly-test.outputs.git-branch }}
+          RUN_URL: "${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}"
+          COMMIT_URL: "${{ github.server_url }}/${{ github.repository }}/commit/${{ needs.e2e-nightly-test.outputs.git-commit }}"
+        with:
+          payload: |
+            {
+              "blocks": [
+                {
+                  "type": "section",
+                  "text": {
+                    "type": "mrkdwn",
+                    "text": ":skull: Nightly E2E tests for `${{ env.BRANCH }}` failed. See the <${{ env.RUN_URL }}|run details> and the <${{ env.COMMIT_URL }}|commit> that caused the failure."
+                  }
+                }
+              ]
+            }
 
-  e2e-nightly-success: # may turn this off once they seem to pass consistently
+  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
+        uses: slackapi/slack-github-action@v1.23.0
         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: ''
+          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
+          SLACK_WEBHOOK_TYPE: INCOMING_WEBHOOK
+          BRANCH: ${{ needs.e2e-nightly-test.outputs.git-branch }}
+        with:
+          payload: |
+            {
+              "blocks": [
+                {
+                  "type": "section",
+                  "text": {
+                    "type": "mrkdwn",
+                    "text": ":white_check_mark: Nightly E2E tests for `${{ env.BRANCH }}` passed."
+                  }
+                }
+              ]
+            }

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

@@ -0,0 +1,93 @@
+# Runs randomly generated E2E testnets nightly on main
+
+# !! Relevant changes to this file should be propagated to the e2e-nightly-<V>x
+# files for the supported backport branches, when appropriate, modulo version
+# markers.
+
+name: e2e-nightly-main
+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:
+        group: ['00', '01', '02', '03', "04"]
+    runs-on: ubuntu-latest
+    timeout-minutes: 60
+    steps:
+      - uses: actions/setup-go@v3
+        with:
+          go-version: '1.18'
+
+      - uses: actions/checkout@v3
+
+      - 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 5 -d networks/nightly/
+
+      - name: Run ${{ matrix.p2p }} p2p testnets
+        working-directory: test/e2e
+        run: ./run-multiple.sh networks/nightly/*-group${{ matrix.group }}-*.toml
+
+  e2e-nightly-fail:
+    needs: e2e-nightly-test
+    if: ${{ failure() }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Notify Slack on failure
+        uses: slackapi/slack-github-action@v1.23.0
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
+          SLACK_WEBHOOK_TYPE: INCOMING_WEBHOOK
+          BRANCH: ${{ github.ref_name }}
+          RUN_URL: "${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}"
+          COMMIT_URL: "${{ github.server_url }}/${{ github.repository }}/commit/${{ github.sha }}"
+        with:
+          payload: |
+            {
+              "blocks": [
+                {
+                  "type": "section",
+                  "text": {
+                    "type": "mrkdwn",
+                    "text": ":skull: Nightly E2E tests for `${{ env.BRANCH }}` failed. See the <${{ env.RUN_URL }}|run details> and the <${{ env.COMMIT_URL }}|commit> that caused the failure."
+                  }
+                }
+              ]
+            }
+
+  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: slackapi/slack-github-action@v1.23.0
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
+          SLACK_WEBHOOK_TYPE: INCOMING_WEBHOOK
+          BRANCH: ${{ github.ref_name }}
+        with:
+          payload: |
+            {
+              "blocks": [
+                {
+                  "type": "section",
+                  "text": {
+                    "type": "mrkdwn",
+                    "text": ":white_check_mark: Nightly E2E tests for `${{ env.BRANCH }}` passed."
+                  }
+                }
+              ]
+            }

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

@@ -1,74 +0,0 @@
-# Runs randomly generated E2E testnets nightly on master
-
-# !! If you change something in this file, you probably want
-# to update the e2e-nightly-34x workflow as well!
-
-name: e2e-nightly-master
-on:
-  workflow_dispatch: # allow running workflow manually
-  schedule:
-    - cron: '0 2 * * *'
-
-jobs:
-  e2e-nightly-test-2:
-    # 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']
-    runs-on: ubuntu-latest
-    timeout-minutes: 60
-    steps:
-      - uses: actions/setup-go@v2
-        with:
-          go-version: '1.16'
-
-      - uses: actions/checkout@v2.3.4
-
-      - 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 2 -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-2
-    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 master
-          SLACK_FOOTER: ''
-
-  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:
-      - 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 master
-          SLACK_FOOTER: ''

.github/workflows/e2e.yml

@@ -1,12 +1,12 @@
 name: e2e
-# Runs the CI end-to-end test network on all pushes to master or release branches
+# Runs the CI end-to-end test network on all pushes to main 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:
-      - master
+      - main
       - release/**
 
 jobs:
@@ -14,11 +14,11 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 15
     steps:
-      - uses: actions/setup-go@v2
+      - uses: actions/setup-go@v3
         with:
-          go-version: '1.16'
-      - uses: actions/checkout@v2.3.4
-      - uses: technote-space/get-diff-action@v5
+          go-version: '1.18'
+      - uses: actions/checkout@v3
+      - uses: technote-space/get-diff-action@v6
         with:
           PATTERNS: |
             **/**.go
@@ -33,10 +33,5 @@ jobs:
 
       - name: Run CI testnet
         working-directory: test/e2e
-        run: ./build/runner -f networks/ci.toml
+        run: ./run-multiple.sh 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

@@ -1,11 +1,11 @@
 # Runs fuzzing nightly.
-name: fuzz-nightly
+name: Fuzz Tests
 on:
-  workflow_dispatch: # allow running workflow manually
+  workflow_dispatch:  # allow running workflow manually
   schedule:
     - cron: '0 3 * * *'
   pull_request:
-    branches: [master]
+    branches: [main]
     paths:
       - "test/fuzz/**/*.go"
 
@@ -13,24 +13,19 @@ jobs:
   fuzz-nightly-test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/setup-go@v2
+      - uses: actions/setup-go@v3
         with:
-          go-version: '1.16'
+          go-version: '1.18'
 
-      - uses: actions/checkout@v2.3.4
+      - uses: actions/checkout@v3
 
       - 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
+        run: go install github.com/dvyukov/go-fuzz/go-fuzz@latest github.com/dvyukov/go-fuzz/go-fuzz-build@latest
 
-      - name: Fuzz mempool-v1
+      - name: Fuzz mempool
         working-directory: test/fuzz
-        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
+        run: timeout -s SIGINT --preserve-status 10m make fuzz-mempool
         continue-on-error: true
 
       - name: Fuzz p2p-addrbook
@@ -54,14 +49,14 @@ jobs:
         continue-on-error: true
 
       - name: Archive crashers
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v3
         with:
           name: crashers
           path: test/fuzz/**/crashers
           retention-days: 3
 
       - name: Archive suppressions
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v3
         with:
           name: suppressions
           path: test/fuzz/**/suppressions
@@ -80,13 +75,24 @@ jobs:
     if: ${{ needs.fuzz-nightly-test.outputs.crashers-count != 0 }}
     runs-on: ubuntu-latest
     steps:
-      - name: Notify Slack if any crashers
-        uses: rtCamp/action-slack-notify@12e36fc18b0689399306c2e0b3e0f2978b7f1ee7
+      - name: Notify Slack on failure
+        uses: slackapi/slack-github-action@v1.23.0
         env:
-          SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK }}
-          SLACK_CHANNEL: tendermint-internal
-          SLACK_USERNAME: Nightly Fuzz Tests
-          SLACK_ICON_EMOJI: ':firecracker:'
-          SLACK_COLOR: danger
-          SLACK_MESSAGE: Crashers found in Nightly Fuzz tests
-          SLACK_FOOTER: ''
+          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
+          SLACK_WEBHOOK_TYPE: INCOMING_WEBHOOK
+          BRANCH: ${{ github.ref_name }}
+          CRASHERS: ${{ needs.fuzz-nightly-test.outputs.crashers-count }}
+          RUN_URL: "${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}"
+        with:
+          payload: |
+            {
+              "blocks": [
+                {
+                  "type": "section",
+                  "text": {
+                    "type": "mrkdwn",
+                    "text": ":skull: Nightly fuzz tests for `${{ env.BRANCH }}` failed with ${{ env.CRASHERS }} crasher(s). See the <${{ env.RUN_URL }}|run details>."
+                  }
+                }
+              ]
+            }

.github/workflows/govulncheck.yml

@@ -0,0 +1,31 @@
+name: Check for Go vulnerabilities
+# Runs https://pkg.go.dev/golang.org/x/vuln/cmd/govulncheck to proactively
+# check for vulnerabilities in code packages if there were any changes made to
+# any Go code or dependencies.
+#
+# Run `make vulncheck` from the root of the repo to run this workflow locally.
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+      - release/**
+
+jobs:
+  govulncheck:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/setup-go@v3
+        with:
+          go-version: "1.18"
+      - uses: actions/checkout@v3
+      - uses: technote-space/get-diff-action@v6
+        with:
+          PATTERNS: |
+            **/*.go
+            go.mod
+            go.sum
+            Makefile
+      - name: govulncheck
+        run: make vulncheck
+        if: "env.GIT_DIFF != ''"

.github/workflows/janitor.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 3
     steps:
-      - uses: styfle/cancel-workflow-action@0.9.1
+      - uses: styfle/cancel-workflow-action@0.11.0
         with:
           workflow_id: 1041851,1401230,2837803
           access_token: ${{ github.token }}

.github/workflows/jepsen.yml

@@ -1,65 +0,0 @@
-# Runs a Jepsen test - cas-register (no nemesis) by default.
-#   See inputs for various options.
-#   Repo: https://github.com/tendermint/jepsen
-#
-# If you want to test a new breaking version of Tendermint, you'll need to
-# update the Merkleeyes ABCI app and 'merkleeyesUrl' input accordingly. You can
-# upload a new tarball to
-# https://github.com/tendermint/jepsen/releases/tag/0.2.1.
-#
-# Manually triggered.
-name: jepsen
-on:
-  workflow_dispatch:
-    inputs:
-      workload:
-        description: 'Test workload to run: (cas-register | set)'
-        required: true
-        default: 'cas-register'
-      nemesis:
-        description: 'Nemesis to use: (none | clocks | single-partitions | half-partitions | ring-partitions | split-dup-validators | peekaboo-dup-validators | changing-validators | crash | truncate-tendermint | truncate-merkleeyes)'
-        required: true
-        default: 'none'
-      dupOrSuperByzValidators:
-        description: '"--dup-validators" (multiple validators share the same key) and(or) "--super-byzantine-validators" (byzantine validators have just shy of 2/3 the voting weight)'
-        required: false
-        default: ''
-      concurrency:
-        description: 'How many workers should we run? Must be an integer and >= 10, optionally followed by n (e.g. 3n) to multiply by the number of nodes.'
-        required: true
-        default: 10
-      timeLimit:
-        description: 'Excluding setup and teardown, how long should a test run for, in seconds?'
-        required: true
-        default: 60
-      tendermintUrl:
-        description: 'Where to grab the Tendermint tarball (w/ linux/amd64 binary)'
-        required: true
-        default: 'https://github.com/melekes/katas/releases/download/0.2.0/tendermint.tar.gz'
-      merkleeyesUrl:
-        description: 'Where to grab the Merkleeyes tarball (w/ linux/amd64 binary)'
-        required: true
-        default: 'https://github.com/tendermint/jepsen/releases/download/0.2.1/merkleeyes_0.1.7.tar.gz'
-
-jobs:
-  jepsen-test:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout the Jepsen repository
-        uses: actions/checkout@v2.3.4
-        with:
-          repository: 'tendermint/jepsen'
-
-      - name: Start a Jepsen cluster in background
-        working-directory: docker
-        run: ./bin/up --daemon
-
-      - name: Run the test
-        run: docker exec -i jepsen-control bash -c 'source /root/.bashrc; cd /jepsen/tendermint; lein run test --nemesis ${{ github.event.inputs.nemesis }} --workload ${{ github.event.inputs.workload }} --concurrency ${{ github.event.inputs.concurrency }} --tendermint-url ${{ github.event.inputs.tendermintUrl }} --merkleeyes-url ${{ github.event.inputs.merkleeyesUrl }} --time-limit ${{ github.event.inputs.timeLimit }} ${{ github.event.inputs.dupOrSuperByzValidators }}'
-
-      - name: Archive results
-        uses: actions/upload-artifact@v2
-        with:
-          name: results
-          path: tendermint/store/latest
-          retention-days: 3

.github/workflows/linkchecker.yml

@@ -1,12 +0,0 @@
-name: Check Markdown links
-on: 
-  schedule:
-    - cron: '* */24 * * *'
-jobs:
-  markdown-link-check:
-    runs-on: ubuntu-latest
-    steps:
-      - 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

@@ -1,29 +1,37 @@
-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.
+name: Golang Linter
+# Lint runs golangci-lint over the entire Tendermint repository.
+#
+# This workflow is run on every pull request and push to main.
+#
+# The `golangci` job will pass without running if no *.{go, mod, sum}
+# files have been modified.
+#
+# To run this locally, simply run `make lint` from the root of the repo.
+
 on:
   pull_request:
   push:
     branches:
-      - master
+      - main
 jobs:
   golangci:
     name: golangci-lint
     runs-on: ubuntu-latest
     timeout-minutes: 8
     steps:
-      - uses: actions/checkout@v2.3.4
-      - uses: technote-space/get-diff-action@v5
+      - uses: actions/checkout@v3
+      - uses: actions/setup-go@v3
+        with:
+          go-version: '1.18'
+      - uses: technote-space/get-diff-action@v6
         with:
           PATTERNS: |
             **/**.go
             go.mod
             go.sum
-      - uses: golangci/golangci-lint-action@v2.5.2
+      - uses: golangci/golangci-lint-action@v3
         with:
-          # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.
-          version: v1.38
+          version: v1.50.1
           args: --timeout 10m
           github-token: ${{ secrets.github_token }}
         if: env.GIT_DIFF

.github/workflows/linter.yml

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

.github/workflows/pre-release.yml

@@ -0,0 +1,65 @@
+name: "Pre-release"
+
+on:
+  push:
+    tags:
+      - "v[0-9]+.[0-9]+.[0-9]+-alpha.[0-9]+"  # e.g. v0.37.0-alpha.1, v0.38.0-alpha.10
+      - "v[0-9]+.[0-9]+.[0-9]+-beta.[0-9]+"   # e.g. v0.37.0-beta.1, v0.38.0-beta.10
+      - "v[0-9]+.[0-9]+.[0-9]+-rc[0-9]+"      # e.g. v0.37.0-rc1, v0.38.0-rc10
+
+jobs:
+  prerelease:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - uses: actions/setup-go@v3
+        with:
+          go-version: '1.18'
+
+      - name: Build
+        uses: goreleaser/goreleaser-action@v4
+        if: ${{ github.event_name == 'pull_request' }}
+        with:
+          version: latest
+          args: build --skip-validate   # skip validate skips initial sanity checks in order to be able to fully run
+
+      # Link to CHANGELOG_PENDING.md as release notes.
+      - run: echo https://github.com/tendermint/tendermint/blob/${GITHUB_REF#refs/tags/}/CHANGELOG_PENDING.md > ../release_notes.md
+
+      - name: Release
+        uses: goreleaser/goreleaser-action@v4
+        if: startsWith(github.ref, 'refs/tags/')
+        with:
+          version: latest
+          args: release --rm-dist --release-notes=../release_notes.md
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  prerelease-success:
+    needs: prerelease
+    if: ${{ success() }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Notify Slack upon pre-release
+        uses: slackapi/slack-github-action@v1.23.0
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
+          SLACK_WEBHOOK_TYPE: INCOMING_WEBHOOK
+          RELEASE_URL: "${{ github.server_url }}/${{ github.repository }}/releases/tag/${{ github.ref_name }}"
+        with:
+          payload: |
+            {
+              "blocks": [
+                {
+                  "type": "section",
+                  "text": {
+                    "type": "mrkdwn",
+                    "text": ":sparkles: New Tendermint pre-release: <${{ env.RELEASE_URL }}|${{ github.ref_name }}>"
+                  }
+                }
+              ]
+            }

.github/workflows/proto-docker.yml

@@ -1,51 +0,0 @@
-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-lint.yml

@@ -0,0 +1,21 @@
+name: Protobuf Lint
+on:
+  pull_request:
+    paths:
+      - 'proto/**'
+  push:
+    branches:
+      - main
+    paths:
+      - 'proto/**'
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    steps:
+      - uses: actions/checkout@v3
+      - uses: bufbuild/buf-setup-action@v1.10.0
+      - uses: bufbuild/buf-lint-action@v1
+        with:
+          input: 'proto'

.github/workflows/proto.yml

@@ -1,23 +0,0 @@
-name: Protobuf
-# Protobuf runs buf (https://buf.build/) lint and check-breakage
-# This workflow is only run when a .proto file has been modified
-on:
-  workflow_dispatch: # allow running workflow manually
-  pull_request:
-    paths:
-      - "**.proto"
-jobs:
-  proto-lint:
-    runs-on: ubuntu-latest
-    timeout-minutes: 4
-    steps:
-      - 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@v2.3.4
-      - name: check-breakage
-        run: make proto-check-breaking-ci

.github/workflows/release.yml

@@ -2,36 +2,61 @@ name: "Release"
 
 on:
   push:
-    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:
+  release:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2.3.4
+        uses: actions/checkout@v3
         with:
           fetch-depth: 0
 
-      - uses: actions/setup-go@v2
+      - uses: actions/setup-go@v3
         with:
-          go-version: '1.16'
+          go-version: '1.18'
 
       - name: Build
-        uses: goreleaser/goreleaser-action@v2
+        uses: goreleaser/goreleaser-action@v4
         if: ${{ github.event_name == 'pull_request' }}
         with:
           version: latest
           args: build --skip-validate   # skip validate skips initial sanity checks in order to be able to fully run
 
+      - run: echo https://github.com/tendermint/tendermint/blob/${GITHUB_REF#refs/tags/}/CHANGELOG.md#${GITHUB_REF#refs/tags/} > ../release_notes.md
+
       - name: Release
-        uses: goreleaser/goreleaser-action@v2
+        uses: goreleaser/goreleaser-action@v4
         if: startsWith(github.ref, 'refs/tags/')
         with:
           version: latest
-          args: release --rm-dist
+          args: release --rm-dist --release-notes=../release_notes.md
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  release-success:
+    needs: release
+    if: ${{ success() }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Notify Slack upon release
+        uses: slackapi/slack-github-action@v1.23.0
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
+          SLACK_WEBHOOK_TYPE: INCOMING_WEBHOOK
+          RELEASE_URL: "${{ github.server_url }}/${{ github.repository }}/releases/tag/${{ github.ref_name }}"
+        with:
+          payload: |
+            {
+              "blocks": [
+                {
+                  "type": "section",
+                  "text": {
+                    "type": "mrkdwn",
+                    "text": ":rocket: New Tendermint release: <${{ env.RELEASE_URL }}|${{ github.ref_name }}>"
+                  }
+                }
+              ]
+            }

.github/workflows/stale.yml

@@ -7,7 +7,7 @@ jobs:
   stale:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/stale@v4
+      - uses: actions/stale@v6
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
           stale-pr-message: "This pull request has been automatically marked as stale because it has not had

.github/workflows/tendermint-docker.yml

@@ -1,20 +1,21 @@
-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
+name: Docker
+# Build & Push rebuilds the Tendermint docker image on every push to main and creation of tags
+# and pushes the image to https://hub.docker.com/r/tendermint/tendermint
 on:
-  pull_request:
   push:
     branches:
-      - master
+      - main
     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]+-alpha.[0-9]+"  # e.g. v0.37.0-alpha.1, v0.38.0-alpha.10
+      - "v[0-9]+.[0-9]+.[0-9]+-beta.[0-9]+"   # e.g. v0.37.0-beta.1, v0.38.0-beta.10
+      - "v[0-9]+.[0-9]+.[0-9]+-rc[0-9]+"      # e.g. v0.37.0-rc1, v0.38.0-rc10
 
 jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2.3.4
+      - uses: actions/checkout@v3
       - name: Prepare
         id: prep
         run: |
@@ -39,18 +40,18 @@ jobs:
         with:
           platforms: all
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v1.6.0
+      - name: Set up Docker Build
+        uses: docker/setup-buildx-action@v2.2.1
 
       - name: Login to DockerHub
         if: ${{ github.event_name != 'pull_request' }}
-        uses: docker/login-action@v1.10.0
+        uses: docker/login-action@v2.1.0
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Publish to Docker Hub
-        uses: docker/build-push-action@v2.7.0
+        uses: docker/build-push-action@v3.2.0
         with:
           context: .
           file: ./DOCKER/Dockerfile

.github/workflows/testapp-docker.yml

@@ -0,0 +1,60 @@
+name: Docker E2E Node
+# Build & Push rebuilds the e2e Testapp docker image on every push to main and creation of tags
+# and pushes the image to https://hub.docker.com/r/tendermint/e2e-node
+on:
+  push:
+    branches:
+      - main
+    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]+-alpha.[0-9]+"  # e.g. v0.37.0-alpha.1, v0.38.0-alpha.10
+      - "v[0-9]+.[0-9]+.[0-9]+-beta.[0-9]+"   # e.g. v0.37.0-beta.1, v0.38.0-beta.10
+      - "v[0-9]+.[0-9]+.[0-9]+-rc[0-9]+"      # e.g. v0.37.0-rc1, v0.38.0-rc10
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Prepare
+        id: prep
+        run: |
+          DOCKER_IMAGE=tendermint/e2e-node
+          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}"
+          if [[ $VERSION =~ ^v[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
+            TAGS="$TAGS,${DOCKER_IMAGE}:${VERSION}"
+          fi
+          echo "tags=${TAGS}" >> $GITHUB_OUTPUT
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@master
+        with:
+          platforms: all
+
+      - name: Set up Docker Build
+        uses: docker/setup-buildx-action@v2.2.1
+
+      - name: Login to DockerHub
+        if: ${{ github.event_name != 'pull_request' }}
+        uses: docker/login-action@v2.1.0
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Publish to Docker Hub
+        uses: docker/build-push-action@v3.2.0
+        with:
+          context: .
+          file: ./test/e2e/docker/Dockerfile
+          platforms: linux/amd64,linux/arm64
+          push: ${{ github.event_name != 'beep_boop' }}
+          tags: ${{ steps.prep.outputs.tags }}

.github/workflows/tests.yml

@@ -1,106 +1,34 @@
-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
+name: Test
 on:
   pull_request:
   push:
+    paths:
+      - "**.go"
     branches:
-      - master
+      - main
       - release/**
 
 jobs:
-  build:
-    name: Build
+  tests:
     runs-on: ubuntu-latest
-    timeout-minutes: 5
+    strategy:
+      fail-fast: false
+      matrix:
+        part: ["00", "01", "02", "03", "04", "05"]
     steps:
-      - uses: actions/setup-go@v2
+      - uses: actions/setup-go@v3
         with:
-          go-version: "1.16"
-      - uses: actions/checkout@v2.3.4
-      - uses: technote-space/get-diff-action@v5
+          go-version: "1.18"
+      - uses: actions/checkout@v3
+      - uses: technote-space/get-diff-action@v6
         with:
           PATTERNS: |
             **/**.go
+            "!test/"
             go.mod
             go.sum
-      - name: install
-        run: make install install_abci
-        if: "env.GIT_DIFF != ''"
-      - uses: actions/cache@v2.1.6
-        with:
-          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
-
-  test_abci_cli:
-    runs-on: ubuntu-latest
-    needs: build
-    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
-            go.mod
-            go.sum
-      - uses: actions/cache@v2.1.6
-        with:
-          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
-      - 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: "1.16"
-      - uses: actions/checkout@v2.3.4
-      - uses: technote-space/get-diff-action@v5
-        with:
-          PATTERNS: |
-            **/**.go
-            go.mod
-            go.sum
-      - uses: actions/cache@v2.1.6
-        with:
-          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
+            Makefile
+      - name: Run Go Tests
+        run: |
+          make test-group-${{ matrix.part }} NUM_SPLIT=6
         if: env.GIT_DIFF

.gitignore

@@ -25,6 +25,7 @@ docs/_build
 docs/dist
 docs/node_modules/
 docs/spec
+docs/.vuepress/public/rpc
 index.html.md
 libs/pubsub/query/fuzz_test/output
 profile\.out
@@ -37,6 +38,7 @@ terraform.tfstate
 terraform.tfstate.backup
 terraform.tfstate.d
 test/app/grpc_client
+test/loadtime/build
 test/e2e/build
 test/e2e/networks/*/
 test/logs
@@ -46,3 +48,12 @@ test/fuzz/**/corpus
 test/fuzz/**/crashers
 test/fuzz/**/suppressions
 test/fuzz/**/*.zip
+proto/spec/**/*.pb.go
+*.aux
+*.bbl
+*.blg
+*.pdf
+*.gz
+*.dvi
+# Python virtual environments
+.venv

.golangci.yml

@@ -2,53 +2,35 @@ linters:
   enable:
     - asciicheck
     - bodyclose
-    - deadcode
     - depguard
     - dogsled
     - dupl
     - errcheck
     - exportloopref
-    # - funlen
-    # - gochecknoglobals
-    # - gochecknoinits
-    # - gocognit
     - goconst
-    - gocritic
-    # - gocyclo
-    # - godox
     - gofmt
     - goimports
-    - golint
+    - revive
     - gosec
     - gosimple
     - govet
     - ineffassign
-    # - interfacer
-    - lll
-    # - maligned
     - misspell
     - nakedret
     - nolintlint
     - prealloc
     - staticcheck
-    - structcheck
+    # - structcheck // to be fixed by golangci-lint
     - stylecheck
     - typecheck
     - unconvert
-    # - unparam
     - unused
-    - varcheck
-    # - whitespace
-    # - wsl
 
 issues:
   exclude-rules:
     - path: _test\.go
       linters:
         - gosec
-    - linters:
-        - lll
-      source: "https://"
   max-same-issues: 50
 
 linters-settings:

.goreleaser.yml

@@ -25,12 +25,13 @@ checksum:
   algorithm: sha256
 
 release:
-  name_template: "{{.Version}} (WARNING: BETA SOFTWARE)"
+  prerelease: auto
+  name_template: "{{.Version}}"
 
 archives:
   - files:
-    - LICENSE
-    - README.md
-    - UPGRADING.md
-    - SECURITY.md
-    - CHANGELOG.md
+      - LICENSE
+      - README.md
+      - UPGRADING.md
+      - SECURITY.md
+      - CHANGELOG.md

.markdownlint.yml

@@ -0,0 +1,17 @@
+# markdownlint configuration
+# https://github.com/DavidAnson/markdownlint
+
+# Default state for all rules
+default: true
+
+# See https://github.com/DavidAnson/markdownlint#rules--aliases for rules
+MD001: false
+MD007: {indent: 4}
+MD013: false
+MD024: {siblings_only: true}
+MD025: false
+MD033: false
+MD036: false
+MD010: false
+MD012: false
+MD028: false

.md-link-check.json

@@ -0,0 +1,6 @@
+{
+    "retryOn429": true,
+    "retryCount": 5,
+    "fallbackRetryDelay": "30s",
+    "aliveStatusCodes": [200, 206, 503]
+}

CHANGELOG.md

@@ -1,165 +1,135 @@
 # Changelog
 
-Friendly reminder: We have a [bug bounty program](https://hackerone.com/tendermint).
+Friendly reminder, we have a [bug bounty program](https://hackerone.com/cosmos).
 
-## v0.35
+## v0.34.21
 
-Special thanks to external contributors on this release: @JayT106, @bipulprasad, @alessio, @Yawning, @silasdavis,
-@cuonglm, @tanyabouman, @JoeKash, @githubsands, @jeebster, @crypto-facs, @liamsi, and @gotjoshua
+Release highlights include:
+
+- A new `[storage]` configuration section and flag `discard_abci_responses`,
+  which, if enabled, discards all ABCI responses except the latest one in order
+  to reduce disk space usage in the state store. When enabled, the
+  `block_results` RPC endpoint can no longer function and will return an error.
+- A new CLI command, `reindex-event`, to re-index block and tx events to the
+  event sinks. You can run this command when the event store backend
+  dropped/disconnected or you want to replace the backend. When
+  `discard_abci_responses` is enabled, you will not be able to use this command.
+
+Special thanks to external contributors on this release: @rootwarp & @animart
+
+### FEATURES
+
+- [cli] [\#9083](https://github.com/tendermint/tendermint/issues/9083) Backport command to reindex missed events (@cmwaters)
+- [cli] [\#9107](https://github.com/tendermint/tendermint/issues/9107) Add the `p2p.external-address` argument to set the node P2P external address (@amimart)
+
+### IMPROVEMENTS
+
+- [config] [\#9054](https://github.com/tendermint/tendermint/issues/9054) `discard_abci_responses` flag added to discard all ABCI
+  responses except the last in order to save on storage space in the state
+  store (@samricotta)
+
+### BUG FIXES
+
+- [mempool] [\#9033](https://github.com/tendermint/tendermint/issues/9033) Rework lock discipline to mitigate callback deadlocks in the
+  priority mempool
+- [cli] [\#9103](https://github.com/tendermint/tendermint/issues/9103) fix unsafe-reset-all for working with home path (@rootwarp)
+
+## v0.34.20
+
+Special thanks to external contributors on this release: @joeabbey @yihuang
+
+This release introduces a prioritized mempool. Further notes can be found in UPGRADING.md.
+
+NOTE: There's a known issue when combining the prioritized mempool with the ABCI socket client, that the team are curently working to resolve. Read more about the issue [here](https://github.com/tendermint/tendermint/pull/9030).
+
+### BUG FIXES
+
+- [blocksync] [\#8496](https://github.com/tendermint/tendermint/pull/8496) validate block against state before persisting it to disk (@cmwaters)
+- [indexer] [#8625](https://github.com/tendermint/tendermint/pull/8625) Fix overriding tx index of duplicated txs. (@yihuang)
+- [mempool] [\#8962](https://github.com/tendermint/tendermint/issues/8962) Backport priority mempool fixes from v0.35.x to v0.34.x (@creachadair).
+
+### FEATURES
+
+- [cli] [\#8674] Add command to force compact goleveldb databases (@cmwaters)
+- [mempool] [\#8695] Port back the priority mempool. (@alexanderbez, @jmalicevic, @cmwaters)
+
+### IMPROVEMENTS
+
+- [logging] [\#8845](https://github.com/tendermint/tendermint/issues/8845) Add "Lazy" Stringers to defer Sprintf and Hash until logs print. (@joeabbey)
+
+## v0.34.19
+
+### BUG FIXES
+
+- [cli] [\#8270](https://github.com/tendermint/tendermint/issues/8270) fix reset commands (@alexanderbez).
+
+## v0.34.18
 
 ### 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)
+    - [cli] [\#8258](https://github.com/tendermint/tendermint/pull/8258) Fix a bug in the cli that caused `unsafe-reset-all` to panic
 
-- 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
+## v0.34.17
 
-- 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)
+### BREAKING CHANGES
 
-- 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)
+- CLI/RPC/Config
 
-- Tooling
-  - [tools] \#6498 Set OS home dir to instead of the hardcoded PATH. (@JayT106)
-  - [cli/indexer] \#6676 Reindex events command line tooling. (@JayT106)
-
-### FEATURES
-
-- [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 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 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 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 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 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 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)
+   - [cli] [\#8081](https://github.com/tendermint/tendermint/issues/8081) make the reset command safe to use (@marbar3778).
 
 ### BUG FIXES
 
-- [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)
+- [consensus] [\#8079](https://github.com/tendermint/tendermint/issues/8079) start the timeout ticker before relay (backport #7844) (@creachadair).
+- [consensus] [\#7992](https://github.com/tendermint/tendermint/issues/7992) [\#7994](https://github.com/tendermint/tendermint/issues/7994) change lock handling in handleMsg and reactor to alleviate issues gossiping during long ABCI calls (@williambanfield).
+
+## 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).
 
 ## v0.34.13
 
-*September 6, 2021*
-
 This release backports improvements to state synchronization and ABCI
 performance under concurrent load, and the PostgreSQL event indexer.
 
@@ -171,8 +141,6 @@ performance under concurrent load, and the PostgreSQL event indexer.
 
 ## v0.34.12
 
-*August 17, 2021*
-
 Special thanks to external contributors on this release: @JayT106.
 
 ### FEATURES
@@ -200,17 +168,17 @@ adding two new parameters to the state sync config.
 ### BREAKING CHANGES
 
 - Apps
-    - [Version] [\#6494](https://github.com/tendermint/tendermint/pull/6494) `TMCoreSemVer` is not required to be set as a ldflag any longer.
+    - [Version] [\#6494](https://github.com/tendermint/tendermint/issues/6494) `TMCoreSemVer` is not required to be set as a ldflag any longer.
 
 ### IMPROVEMENTS
 
-- [statesync] [\#6566](https://github.com/tendermint/tendermint/pull/6566) Allow state sync fetchers and request timeout to be configurable. (@alexanderbez)
-- [statesync] [\#6378](https://github.com/tendermint/tendermint/pull/6378) Retry requests for snapshots and add a minimum discovery time (5s) for new snapshots. (@tychoish)
-- [statesync] [\#6582](https://github.com/tendermint/tendermint/pull/6582) Increase chunk priority and add multiple retry chunk requests (@cmwaters)
+- [statesync] [\#6566](https://github.com/tendermint/tendermint/issues/6566) Allow state sync fetchers and request timeout to be configurable. (@alexanderbez)
+- [statesync] [\#6378](https://github.com/tendermint/tendermint/issues/6378) Retry requests for snapshots and add a minimum discovery time (5s) for new snapshots. (@tychoish)
+- [statesync] [\#6582](https://github.com/tendermint/tendermint/issues/6582) Increase chunk priority and add multiple retry chunk requests (@cmwaters)
 
 ### BUG FIXES
 
-- [evidence] [\#6375](https://github.com/tendermint/tendermint/pull/6375) Fix bug with inconsistent LightClientAttackEvidence hashing (@cmwaters)
+- [evidence] [\#6375](https://github.com/tendermint/tendermint/issues/6375) Fix bug with inconsistent LightClientAttackEvidence hashing (@cmwaters)
 
 ## v0.34.10
 
@@ -302,7 +270,7 @@ shout-out to @marbar3778 for diagnosing it quickly.
 
 *February 18, 2021*
 
-_Tendermint Core v0.34.5 and v0.34.6 have been recalled due to release tooling problems._
+_Tendermint Core v0.34.5 and v0.34.6 have been recalled due to build tooling problems._
 
 ## v0.34.4
 
@@ -320,6 +288,7 @@ Special thanks to other external contributors on this release: @yayajacky, @odid
 - [light] [\#6026](https://github.com/tendermint/tendermint/pull/6026) Fix a bug when height isn't provided for the rpc calls: `/commit` and `/validators` (@cmwaters)
 - [evidence] [\#6068](https://github.com/tendermint/tendermint/pull/6068) Terminate broadcastEvidenceRoutine when peer is stopped (@melekes)
 
+
 ## v0.34.3
 
 *January 19, 2021*
@@ -501,7 +470,7 @@ Special thanks to external contributors on this release: @james-ray, @fedekunze,
 - [abci] [\#5174](https://github.com/tendermint/tendermint/pull/5174) Remove `MockEvidence` in favor of testing with actual evidence types (`DuplicateVoteEvidence` & `LightClientAttackEvidence`) (@cmwaters)
 - [abci] [\#5191](https://github.com/tendermint/tendermint/pull/5191) Add `InitChain.InitialHeight` field giving the initial block height (@erikgrinaker)
 - [abci] [\#5227](https://github.com/tendermint/tendermint/pull/5227) Add `ResponseInitChain.app_hash` which is recorded in genesis block (@erikgrinaker)
-- [config] [\#5147](https://github.com/tendermint/tendermint/pull/5147) Add `--consensus.double_sign_check_height` flag and `DoubleSignCheckHeight` config variable. See [ADR-51](https://github.com/tendermint/tendermint/blob/master/docs/architecture/adr-051-double-signing-risk-reduction.md) (@dongsam)
+- [config] [\#5147](https://github.com/tendermint/tendermint/pull/5147) Add `--consensus.double_sign_check_height` flag and `DoubleSignCheckHeight` config variable. See [ADR-51](https://github.com/tendermint/tendermint/blob/main/docs/architecture/adr-051-double-signing-risk-reduction.md) (@dongsam)
 - [db] [\#5233](https://github.com/tendermint/tendermint/pull/5233) Add support for `badgerdb` database backend (@erikgrinaker)
 - [evidence] [\#4532](https://github.com/tendermint/tendermint/pull/4532) Handle evidence from light clients (@melekes)
 - [evidence] [#4821](https://github.com/tendermint/tendermint/pull/4821) Amnesia (light client attack) evidence can be detected, verified and committed (@cmwaters)
@@ -515,7 +484,7 @@ Special thanks to external contributors on this release: @james-ray, @fedekunze,
 - [rpc] [\#5017](https://github.com/tendermint/tendermint/pull/5017) Add `/check_tx` endpoint to check transactions without executing them or adding them to the mempool (@melekes)
 - [rpc] [\#5108](https://github.com/tendermint/tendermint/pull/5108) Subscribe using the websocket for new evidence events (@cmwaters)
 - [statesync] Add state sync support, where a new node can be rapidly bootstrapped by fetching state snapshots from peers instead of replaying blocks. See the `[statesync]` config section.
-- [evidence] [\#5361](https://github.com/tendermint/tendermint/pull/5361) Add LightClientAttackEvidence and refactor evidence lifecycle - for more information see [ADR-059](https://github.com/tendermint/tendermint/blob/master/docs/architecture/adr-059-evidence-composition-and-lifecycle.md) (@cmwaters)
+- [evidence] [\#5361](https://github.com/tendermint/tendermint/pull/5361) Add LightClientAttackEvidence and refactor evidence lifecycle - for more information see [ADR-059](https://github.com/tendermint/tendermint/blob/main/docs/architecture/adr-059-evidence-composition-and-lifecycle.md) (@cmwaters)
 
 ### IMPROVEMENTS
 
@@ -595,7 +564,7 @@ This security release fixes:
 Tendermint 0.33.0 and above allow block proposers to include signatures for the
 wrong block. This may happen naturally if you start a network, have it run for
 some time and restart it **without changing the chainID**. (It is a
-[misconfiguration](https://docs.tendermint.com/master/tendermint-core/using-tendermint.html)
+[misconfiguration](https://docs.tendermint.com/v0.33/tendermint-core/using-tendermint.html)
 to reuse chainIDs.) Correct block proposers will accidentally include signatures
 for the wrong block if they see these signatures, and then commits won't validate,
 making all proposed blocks invalid. A malicious validator (even with a minimal
@@ -894,7 +863,7 @@ 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](https://github.com/tendermint/spec/blob/master/spec/consensus/light-client.md) for complete details.
+subjectivity interface. Refer to the [spec](https://github.com/tendermint/tendermint/blob/main/spec/consensus/light-client.md) for complete details.
 `lite` package is now deprecated and will be removed in v0.34 release.
 
 ### BREAKING CHANGES:
@@ -1255,7 +1224,7 @@ Special thanks to external contributors on this release: @jon-certik, @gracenoah
 *August 28, 2019*
 
 @climber73 wrote the [Writing a Tendermint Core application in Java
-(gRPC)](https://github.com/tendermint/tendermint/blob/master/docs/guides/java.md)
+(gRPC)](https://github.com/tendermint/tendermint/blob/main/docs/guides/java.md)
 guide.
 
 Special thanks to external contributors on this release:
@@ -1288,7 +1257,7 @@ Special thanks to external contributors on this release:
 
 ### FEATURES:
 
-- [blockchain] [\#3561](https://github.com/tendermint/tendermint/issues/3561) Add early version of the new blockchain reactor, which is supposed to be more modular and testable compared to the old version. To try it, you'll have to change `version` in the config file, [here](https://github.com/tendermint/tendermint/blob/master/config/toml.go#L303) NOTE: It's not ready for a production yet. For further information, see [ADR-40](https://github.com/tendermint/tendermint/blob/master/docs/architecture/adr-040-blockchain-reactor-refactor.md) & [ADR-43](https://github.com/tendermint/tendermint/blob/master/docs/architecture/adr-043-blockchain-riri-org.md)
+- [blockchain] [\#3561](https://github.com/tendermint/tendermint/issues/3561) Add early version of the new blockchain reactor, which is supposed to be more modular and testable compared to the old version. To try it, you'll have to change `version` in the config file, [here](https://github.com/tendermint/tendermint/blob/main/config/toml.go#L303) NOTE: It's not ready for a production yet. For further information, see [ADR-40](https://github.com/tendermint/tendermint/blob/main/docs/architecture/adr-040-blockchain-reactor-refactor.md) & [ADR-43](https://github.com/tendermint/tendermint/blob/main/docs/architecture/adr-043-blockchain-riri-org.md)
 - [mempool] [\#3826](https://github.com/tendermint/tendermint/issues/3826) Make `max_msg_bytes` configurable(@bluele)
 - [node] [\#3846](https://github.com/tendermint/tendermint/pull/3846) Allow replacing existing p2p.Reactor(s) using [`CustomReactors`
   option](https://godoc.org/github.com/tendermint/tendermint/node#CustomReactors).
@@ -1346,7 +1315,7 @@ This release contains a minor enhancement to the ABCI and some breaking changes
 
 - [p2p] [\#3338](https://github.com/tendermint/tendermint/issues/3338) Prevent "sent next PEX request too soon" errors by not calling
   ensurePeers outside of ensurePeersRoutine
-- [behaviour] [\3772](https://github.com/tendermint/tendermint/pull/3772) Return correct reason in MessageOutOfOrder (@jim380)
+- [behavior] [\3772](https://github.com/tendermint/tendermint/pull/3772) Return correct reason in MessageOutOfOrder (@jim380)
 - [config] [\#3723](https://github.com/tendermint/tendermint/issues/3723) Add consensus_params to testnet config generation; document time_iota_ms (@ashleyvega)
 
 
@@ -1465,7 +1434,6 @@ Notes:
 Special thanks to [fudongbai](https://hackerone.com/fudongbai) for finding
 and reporting this.
 
-
 ### SECURITY:
 
 - [mempool] Reserve IDs in InitPeer instead of AddPeer (@tessr)
@@ -1485,7 +1453,6 @@ identified and fixed here.
 Special thanks to [elvishacker](https://hackerone.com/elvishacker) for finding
 and reporting this.
 
-
 ### BREAKING CHANGES:
 
 - Go API
@@ -1512,7 +1479,6 @@ accepting new peers and only allowing `ed25519` pubkeys.
 Special thanks to [fudongbai](https://hackerone.com/fudongbai) for pointing
 this out.
 
-
 ### SECURITY:
 
 - [p2p] [\#4030](https://github.com/tendermint/tendermint/issues/4030) Only allow ed25519 pubkeys when connecting
@@ -1528,7 +1494,6 @@ All clients are recommended to upgrade. See
 Special thanks to [fudongbai](https://hackerone.com/fudongbai) for discovering
 and reporting this issue.
 
-
 ### SECURITY:
 
 - [p2p] [\#4030](https://github.com/tendermint/tendermint/issues/4030) Fix for panic on nil public key send to a peer
@@ -1609,7 +1574,7 @@ Special thanks to external contributors on this release:
 - [libs/db] [\#3611](https://github.com/tendermint/tendermint/issues/3611) Conditional compilation
   * 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/master/introduction/install.html#compile-with-cleveldb-support)
+    <https://docs.tendermint.com>)
   * Use `boltdb` tag to compile Tendermint with bolt db
 - [node] [\#3362](https://github.com/tendermint/tendermint/issues/3362) Return an error if `persistent_peers` list is invalid (except
   when IP lookup fails)
@@ -1670,7 +1635,7 @@ It brings back `NetAddress()` to `NodeInfo` and uses it instead of `SocketAddr`
 Additionally, it improves response time on the `/validators` or `/status` RPC endpoints.
 As a side-effect it makes these RPC endpoint more difficult to DoS and fixes a performance degradation in `ExecCommitBlock`.
 Also, it contains an [ADR](https://github.com/tendermint/tendermint/pull/3539) that proposes decoupling the
-responsibility for peer behaviour from the `p2p.Switch` (by @brapse).
+responsibility for peer behavior from the `p2p.Switch` (by @brapse).
 
 Special thanks to external contributors on this release:
 @brapse, @guagualvcha, @mydring
@@ -1823,7 +1788,6 @@ See the [v0.31.0
 Milestone](https://github.com/tendermint/tendermint/milestone/19?closed=1) for
 more details.
 
-
 ### BREAKING CHANGES:
 
 * CLI/RPC/Config
@@ -1834,7 +1798,7 @@ more details.
   - [rpc] [\#3269](https://github.com/tendermint/tendermint/issues/2826) Limit number of unique clientIDs with open subscriptions. Configurable via `rpc.max_subscription_clients`
   - [rpc] [\#3269](https://github.com/tendermint/tendermint/issues/2826) Limit number of unique queries a given client can subscribe to at once. Configurable via `rpc.max_subscriptions_per_client`.
   - [rpc] [\#3435](https://github.com/tendermint/tendermint/issues/3435) Default ReadTimeout and WriteTimeout changed to 10s. WriteTimeout can increased by setting `rpc.timeout_broadcast_tx_commit` in the config.
-  - [rpc/client] [\#3269](https://github.com/tendermint/tendermint/issues/3269) Update `EventsClient` interface to reflect new pubsub/eventBus API [ADR-33](https://github.com/tendermint/tendermint/blob/develop/docs/architecture/adr-033-pubsub.md). This includes `Subscribe`, `Unsubscribe`, and `UnsubscribeAll` methods.
+  - [rpc/client] [\#3269](https://github.com/tendermint/tendermint/issues/3269) Update `EventsClient` interface to reflect new pubsub/eventBus API [ADR-33](https://github.com/tendermint/tendermint/blob/main/docs/architecture/adr-033-pubsub.md). This includes `Subscribe`, `Unsubscribe`, and `UnsubscribeAll` methods.
 
 * Apps
   - [abci] [\#3403](https://github.com/tendermint/tendermint/issues/3403) Remove `time_iota_ms` from BlockParams. This is a
@@ -1887,7 +1851,7 @@ more details.
 - [blockchain] [\#3358](https://github.com/tendermint/tendermint/pull/3358) Fix timer leak in `BlockPool` (@guagualvcha)
 - [cmd] [\#3408](https://github.com/tendermint/tendermint/issues/3408) Fix `testnet` command's panic when creating non-validator configs (using `--n` flag) (@srmo)
 - [libs/db/remotedb/grpcdb] [\#3402](https://github.com/tendermint/tendermint/issues/3402) Close Iterator/ReverseIterator after use
-- [libs/pubsub] [\#951](https://github.com/tendermint/tendermint/issues/951), [\#1880](https://github.com/tendermint/tendermint/issues/1880) Use non-blocking send when dispatching messages [ADR-33](https://github.com/tendermint/tendermint/blob/develop/docs/architecture/adr-033-pubsub.md)
+- [libs/pubsub] [\#951](https://github.com/tendermint/tendermint/issues/951), [\#1880](https://github.com/tendermint/tendermint/issues/1880) Use non-blocking send when dispatching messages [ADR-33](https://github.com/tendermint/tendermint/blob/main/docs/architecture/adr-033-pubsub.md)
 - [lite] [\#3364](https://github.com/tendermint/tendermint/issues/3364) Fix `/validators` and `/abci_query` proxy endpoints
   (@guagualvcha)
 - [p2p/conn] [\#3347](https://github.com/tendermint/tendermint/issues/3347) Reject all-zero shared secrets in the Diffie-Hellman step of secret-connection
@@ -1954,7 +1918,7 @@ 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/tendermint).
+[bug bounty program](https://hackerone.com/cosmos).
 
 ### BREAKING CHANGES:
 
@@ -2043,7 +2007,6 @@ This release contains two important fixes: one for p2p layer where we sometimes
 were not closing connections and one for consensus layer where consensus with
 no empty blocks (`create_empty_blocks = false`) could halt.
 
-
 ### IMPROVEMENTS:
 - [pex] [\#3037](https://github.com/tendermint/tendermint/issues/3037) Only log "Reached max attempts to dial" once
 - [rpc] [\#3159](https://github.com/tendermint/tendermint/issues/3159) Expose
@@ -2082,7 +2045,6 @@ While we are trying to stabilize the Block protocol to preserve compatibility
 with old chains, there may be some final changes yet to come before Cosmos
 launch as we continue to audit and test the software.
 
-
 ### BREAKING CHANGES:
 
 * CLI/RPC/Config
@@ -2130,7 +2092,6 @@ launch as we continue to audit and test the software.
 Special thanks to external contributors on this release:
 @HaoyangLiu
 
-
 ### BUG FIXES:
 - [consensus] Fix consensus halt from proposing blocks with too much evidence
 
@@ -2183,7 +2144,7 @@ See [UPGRADING.md](UPGRADING.md) for more details.
 
 - [build] [\#3085](https://github.com/tendermint/tendermint/issues/3085) Fix `Version` field in build scripts (@husio)
 - [crypto/multisig] [\#3102](https://github.com/tendermint/tendermint/issues/3102) Fix multisig keys address length
-- [crypto/encoding] [\#3101](https://github.com/tendermint/tendermint/issues/3101) Fix `PubKeyMultisigThreshold` unmarshaling into `crypto.PubKey` interface
+- [crypto/encoding] [\#3101](https://github.com/tendermint/tendermint/issues/3101) Fix `PubKeyMultisigThreshold` unmarshalling into `crypto.PubKey` interface
 - [p2p/conn] [\#3111](https://github.com/tendermint/tendermint/issues/3111) Make SecretConnection thread safe
 - [rpc] [\#3053](https://github.com/tendermint/tendermint/issues/3053) Fix internal error in `/tx_search` when results are empty
   (@gianfelipe93)
@@ -2258,7 +2219,6 @@ Special thanks to @dlguddus for discovering a [major
 issue](https://github.com/tendermint/tendermint/issues/2718#issuecomment-440888677)
 in the proposer selection algorithm.
 
-
 This release is primarily about fixes to the proposer selection algorithm
 in preparation for the [Cosmos Game of
 Stakes](https://blog.cosmos.network/the-game-of-stakes-is-open-for-registration-83a404746ee6).
@@ -2320,7 +2280,6 @@ Special thanks to external contributors on this release:
 @ackratos, @goolAdapter, @james-ray, @joe-bowman, @kostko,
 @nagarajmanjunath, @tomtau
 
-
 ### FEATURES:
 
 - [rpc] [\#2747](https://github.com/tendermint/tendermint/issues/2747) Enable subscription to tags emitted from `BeginBlock`/`EndBlock` (@kostko)
@@ -2344,8 +2303,8 @@ Special thanks to external contributors on this release:
 - [blockchain] [\#2731](https://github.com/tendermint/tendermint/issues/2731) Retry both blocks if either is bad to avoid getting stuck during fast sync (@goolAdapter)
 - [consensus] [\#2893](https://github.com/tendermint/tendermint/issues/2893) Use genDoc.Validators instead of state.NextValidators on replay when appHeight==0 (@james-ray)
 - [log] [\#2868](https://github.com/tendermint/tendermint/issues/2868) Fix `module=main` setting overriding all others
-    - NOTE: this changes the default logging behaviour to be much less verbose.
-      Set `log_level="info"` to restore the previous behaviour.
+    - NOTE: this changes the default logging behavior to be much less verbose.
+      Set `log_level="info"` to restore the previous behavior.
 - [rpc] [\#2808](https://github.com/tendermint/tendermint/issues/2808) Fix `accum` field in `/validators` by calling `IncrementAccum` if necessary
 - [rpc] [\#2811](https://github.com/tendermint/tendermint/issues/2811) Allow integer IDs in JSON-RPC requests (@tomtau)
 - [txindex/kv] [\#2759](https://github.com/tendermint/tendermint/issues/2759) Fix tx.height range queries
@@ -2359,7 +2318,6 @@ Special thanks to external contributors on this release:
 Special thanks to external contributors on this release:
 @danil-lashin, @kevlubkcm, @krhubert, @srmo
 
-
 ### BREAKING CHANGES:
 
 * Go API
@@ -2447,7 +2405,7 @@ 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/tendermint) which are fixed in this release.
+program](https://hackerone.com/cosmos) 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
@@ -2477,7 +2435,7 @@ increasing attention to backwards compatibility. Thanks for bearing with us!
   * [state] [\#2644](https://github.com/tendermint/tendermint/issues/2644) Add Version field to State, breaking the format of State as
     encoded on disk.
   * [rpc] [\#2298](https://github.com/tendermint/tendermint/issues/2298) `/abci_query` takes `prove` argument instead of `trusted` and switches the default
-    behaviour to `prove=false`
+    behavior to `prove=false`
   * [rpc] [\#2654](https://github.com/tendermint/tendermint/issues/2654) Remove all `node_info.other.*_version` fields in `/status` and
     `/net_info`
   * [rpc] [\#2636](https://github.com/tendermint/tendermint/issues/2636) Remove
@@ -2591,7 +2549,7 @@ Special thanks to external contributors on this release:
 This release is mostly about the ConsensusParams - removing fields and enforcing MaxGas.
 It also addresses some issues found via security audit, removes various unused
 functions from `libs/common`, and implements
-[ADR-012](https://github.com/tendermint/tendermint/blob/develop/docs/architecture/adr-012-peer-transport.md).
+[ADR-012](https://github.com/tendermint/tendermint/blob/main/docs/architecture/adr-012-peer-transport.md).
 
 BREAKING CHANGES:
 
@@ -2672,7 +2630,7 @@ BREAKING CHANGES:
   - [abci] Added address of the original proposer of the block to Header
   - [abci] Change ABCI Header to match Tendermint exactly
   - [abci] [\#2159](https://github.com/tendermint/tendermint/issues/2159) Update use of `Validator` (see
-    [ADR-018](https://github.com/tendermint/tendermint/blob/develop/docs/architecture/adr-018-ABCI-Validators.md)):
+    [ADR-018](https://github.com/tendermint/tendermint/blob/main/docs/architecture/adr-018-ABCI-Validators.md)):
     - Remove PubKey from `Validator` (so it's just Address and Power)
     - Introduce `ValidatorUpdate` (with just PubKey and Power)
     - InitChain and EndBlock use ValidatorUpdate
@@ -2694,7 +2652,7 @@ BREAKING CHANGES:
   - [state] [\#1815](https://github.com/tendermint/tendermint/issues/1815) Validator set changes are now delayed by one block (!)
     - Add NextValidatorSet to State, changes on-disk representation of state
   - [state] [\#2184](https://github.com/tendermint/tendermint/issues/2184) Enforce ConsensusParams.BlockSize.MaxBytes (See
-    [ADR-020](https://github.com/tendermint/tendermint/blob/develop/docs/architecture/adr-020-block-size.md)).
+    [ADR-020](https://github.com/tendermint/tendermint/blob/main/docs/architecture/adr-020-block-size.md)).
     - Remove ConsensusParams.BlockSize.MaxTxs
     - Introduce maximum sizes for all components of a block, including ChainID
   - [types] Updates to the block Header:
@@ -2705,7 +2663,7 @@ BREAKING CHANGES:
   - [consensus] [\#2203](https://github.com/tendermint/tendermint/issues/2203) Implement BFT time
     - Timestamp in block must be monotonic and equal the median of timestamps in block's LastCommit
   - [crypto] [\#2239](https://github.com/tendermint/tendermint/issues/2239) Secp256k1 signature changes (See
-    [ADR-014](https://github.com/tendermint/tendermint/blob/develop/docs/architecture/adr-014-secp-malleability.md)):
+    [ADR-014](https://github.com/tendermint/tendermint/blob/main/docs/architecture/adr-014-secp-malleability.md)):
     - format changed from DER to `r || s`, both little endian encoded as 32 bytes.
     - malleability removed by requiring `s` to be in canonical form.
 
@@ -3505,7 +3463,7 @@ Also includes the Grand Repo-Merge of 2017.
 BREAKING CHANGES:
 
 - Config and Flags:
-  - The `config` map is replaced with a [`Config` struct](https://github.com/tendermint/tendermint/blob/master/config/config.go#L11),
+  - The `config` map is replaced with a [`Config` struct](https://github.com/tendermint/tendermint/blob/main/config/config.go#L11),
 containing substructs: `BaseConfig`, `P2PConfig`, `MempoolConfig`, `ConsensusConfig`, `RPCConfig`
   - This affects the following flags:
     - `--seeds` is now `--p2p.seeds`

CHANGELOG_PENDING.md

@@ -1,26 +1,55 @@
 # Unreleased Changes
 
-## vX.X
+## v0.37.0
 
 Special thanks to external contributors on this release:
 
-Friendly reminder: We have a [bug bounty program](https://hackerone.com/tendermint).
+Friendly reminder, we have a [bug bounty program](https://hackerone.com/tendermint).
 
 ### BREAKING CHANGES
 
 - CLI/RPC/Config
+  - [config] \#9259 Rename the fastsync section and the fast_sync key blocksync and block_sync respectively
 
 - Apps
+  - [abci/counter] \#6684 Delete counter example app
+  - [abci] \#5783 Make length delimiter encoding consistent (`uint64`) between ABCI and P2P wire-level protocols
+  - [abci] \#9145 Removes unused Response/Request `SetOption` from ABCI (@samricotta)
+  - [abci/params] \#9287 Deduplicate `ConsensusParams` and `BlockParams` so only `types` proto definitions are used (@cmwaters)
+    - Remove `TimeIotaMs` and use a hard-coded 1 millisecond value to ensure monotonically increasing block times.
+    - Rename `AppVersion` to `App` so as to not stutter.
+  - [types] \#9287 Reduce the use of protobuf types in core logic. (@cmwaters)
+    - `ConsensusParams`, `BlockParams`, `ValidatorParams`, `EvidenceParams`, `VersionParams` have become native types.
+      They still utilize protobuf when being sent over the wire or written to disk.
+    - Moved `ValidateConsensusParams` inside (now native type) `ConsensusParams`, and renamed it to `ValidateBasic`.
+  - [abci] \#9301 New ABCI methods `PrepareProposal` and `ProcessProposal` which give the app control over transactions proposed and allows for verification of proposed blocks.
+  - [abci] \#8216 Renamed `EvidenceType` to `MisbehaviorType` and `Evidence` to `Misbehavior` as a more accurate label of their contents. (@williambanfield, @sergio-mena)
+  - [abci] \#9122 Renamed `LastCommitInfo` to `CommitInfo` in preparation for vote extensions. (@cmwaters)
+  - [abci] \#8656, \#8901 Added cli commands for `PrepareProposal` and `ProcessProposal`. (@jmalicevic, @hvanz)
+  - [abci] \#6403 Change the `key` and `value` fields from `[]byte` to `string` in the `EventAttribute` type. (@alexanderbez)
 
 - P2P Protocol
 
 - Go API
+    - [all] \#9144 Change spelling from British English to American (@cmwaters)
+        - Rename "Subscription.Cancelled()" to "Subscription.Canceled()" in libs/pubsub
 
 - Blockchain Protocol
 
 ### FEATURES
 
+- [abci] \#9301 New ABCI methods `PrepareProposal` and `ProcessProposal` which give the app control over transactions proposed and allows for verification of proposed blocks.
+
 ### IMPROVEMENTS
 
+- [crypto] \#9250 Update to use btcec v2 and the latest btcutil. (@wcsiu)
+- [proto] \#9356 Migrate from `gogo/protobuf` to `cosmos/gogoproto` (@julienrbrt)
+- [rpc] \#9276 Added `header` and `header_by_hash` queries to the RPC client (@samricotta)
+- [abci] \#5706 Added `AbciVersion` to `RequestInfo` allowing applications to check ABCI version when connecting to Tendermint. (@marbar3778)
+
 ### BUG FIXES
 
+- [consensus] \#9229 fix round number of `enterPropose` when handling `RoundStepNewRound` timeout. (@fatcat22)
+- [docker] \#9073 enable cross platform build using docker buildx
+- [docker] \#9462 ensure Docker image uses consistent version of Go
+- [blocksync] \#9518 handle the case when the sending queue is full: retry block request after a timeout

CODE_OF_CONDUCT.md

@@ -1,59 +1,109 @@
 # The Tendermint Code of Conduct
 
-This code of conduct applies to all projects run by the Tendermint/COSMOS team and hence to tendermint.
-
+This code of conduct applies to all projects run by the Tendermint/COSMOS team
+and hence to Tendermint.
 
 ----
 
-
 # Conduct
 
 ## Contact: conduct@tendermint.com
 
-* We are committed to providing a friendly, safe and welcoming environment for all, regardless of level of experience, gender, gender identity and expression, sexual orientation, disability, personal appearance, body size, race, ethnicity, age, religion, nationality, or other similar characteristic.
+* We are committed to providing a friendly, safe and welcoming environment for
+  all, regardless of level of experience, gender, gender identity and
+  expression, sexual orientation, disability, personal appearance, body size,
+  race, ethnicity, age, religion, nationality, or other similar characteristic.
 
-* On Slack, please avoid using overtly sexual nicknames or other nicknames that might detract from a friendly, safe and welcoming environment for all.
+* On Slack, please avoid using overtly sexual nicknames or other nicknames that
+  might detract from a friendly, safe and welcoming environment for all.
 
 * Please be kind and courteous. There’s no need to be mean or rude.
 
-* Respect that people have differences of opinion and that every design or implementation choice carries a trade-off and numerous costs. There is seldom a right answer.
+* Respect that people have differences of opinion and that every design or
+  implementation choice carries a trade-off and numerous costs. There is seldom
+  a right answer.
 
-* Please keep unstructured critique to a minimum. If you have solid ideas you want to experiment with, make a fork and see how it works.
+* Please keep unstructured critique to a minimum. If you have solid ideas you
+  want to experiment with, make a fork and see how it works.
 
-* We will exclude you from interaction if you insult, demean or harass anyone. That is not welcome behaviour. We interpret the term “harassment” as including the definition in the [Citizen Code of Conduct](http://citizencodeofconduct.org/); if you have any lack of clarity about what might be included in that concept, please read their definition. In particular, we don’t tolerate behavior that excludes people in socially marginalized groups.
+* We will exclude you from interaction if you insult, demean or harass anyone.
+  That is not welcome behavior. We interpret the term “harassment” as including
+  the definition in the [Citizen Code of Conduct][ccoc]; if you have any lack of
+  clarity about what might be included in that concept, please read their
+  definition. In particular, we don’t tolerate behavior that excludes people in
+  socially marginalized groups.
 
-* Private harassment is also unacceptable. No matter who you are, if you feel you have been or are being harassed or made uncomfortable by a community member, please contact one of the channel admins or the person mentioned above immediately. Whether you’re a regular contributor or a newcomer, we care about making this community a safe place for you and we’ve got your back.
-
-* Likewise any spamming, trolling, flaming, baiting or other attention-stealing behaviour is not welcome.
+* Private harassment is also unacceptable. No matter who you are, if you feel
+  you have been or are being harassed or made uncomfortable by a community
+  member, please contact one of the channel admins or the person mentioned above
+  immediately. Whether you’re a regular contributor or a newcomer, we care about
+  making this community a safe place for you and we’ve got your back.
 
+* Likewise any spamming, trolling, flaming, baiting or other attention-stealing
+  behavior is not welcome.
 
 ----
 
-
 # Moderation
 
-These are the policies for upholding our community’s standards of conduct. If you feel that a thread needs moderation, please contact the above mentioned person.
+These are the policies for upholding our community’s standards of conduct. If
+you feel that a thread needs moderation, please contact the above mentioned
+person.
 
-1. Remarks that violate the Tendermint/COSMOS standards of conduct, including hateful, hurtful, oppressive, or exclusionary remarks, are not allowed. (Cursing is allowed, but never targeting another user, and never in a hateful manner.)
+1. Remarks that violate the Tendermint/COSMOS standards of conduct, including
+   hateful, hurtful, oppressive, or exclusionary remarks, are not allowed.
+   (Cursing is allowed, but never targeting another user, and never in a hateful
+   manner.)
 
-2. Remarks that moderators find inappropriate, whether listed in the code of conduct or not, are also not allowed.
+2. Remarks that moderators find inappropriate, whether listed in the code of
+   conduct or not, are also not allowed.
 
 3. Moderators will first respond to such remarks with a warning.
 
-4. If the warning is unheeded, the user will be “kicked,” i.e., kicked out of the communication channel to cool off.
+4. If the warning is unheeded, the user will be “kicked,” i.e., kicked out of
+   the communication channel to cool off.
 
-5. If the user comes back and continues to make trouble, they will be banned, i.e., indefinitely excluded.
+5. If the user comes back and continues to make trouble, they will be banned,
+   i.e., indefinitely excluded.
 
-6. Moderators may choose at their discretion to un-ban the user if it was a first offense and they offer the offended party a genuine apology.
+6. Moderators may choose at their discretion to un-ban the user if it was a
+   first offense and they offer the offended party a genuine apology.
 
-7. If a moderator bans someone and you think it was unjustified, please take it up with that moderator, or with a different moderator, in private. Complaints about bans in-channel are not allowed.
+7. If a moderator bans someone and you think it was unjustified, please take it
+   up with that moderator, or with a different moderator, in private. Complaints
+   about bans in-channel are not allowed.
 
-8. Moderators are held to a higher standard than other community members. If a moderator creates an inappropriate situation, they should expect less leeway than others.
+8. Moderators are held to a higher standard than other community members. If a
+   moderator creates an inappropriate situation, they should expect less leeway
+   than others.
 
-In the Tendermint/COSMOS community we strive to go the extra step to look out for each other. Don’t just aim to be technically unimpeachable, try to be your best self. In particular, avoid flirting with offensive or sensitive issues, particularly if they’re off-topic; this all too often leads to unnecessary fights, hurt feelings, and damaged trust; worse, it can drive people away from the community entirely.
+In the Tendermint/COSMOS community we strive to go the extra step to look out
+for each other. Don’t just aim to be technically unimpeachable, try to be your
+best self. In particular, avoid flirting with offensive or sensitive issues,
+particularly if they’re off-topic; this all too often leads to unnecessary
+fights, hurt feelings, and damaged trust; worse, it can drive people away
+from the community entirely.
 
-And if someone takes issue with something you said or did, resist the urge to be defensive. Just stop doing what it was they complained about and apologize. Even if you feel you were misinterpreted or unfairly accused, chances are good there was something you could’ve communicated better — remember that it’s your responsibility to make your fellow Cosmonauts comfortable. Everyone wants to get along and we are all here first and foremost because we want to talk about cool technology. You will find that people will be eager to assume good intent and forgive as long as you earn their trust.
+And if someone takes issue with something you said or did, resist the urge to be
+defensive. Just stop doing what it was they complained about and apologize. Even
+if you feel you were misinterpreted or unfairly accused, chances are good there
+was something you could’ve communicated better — remember that it’s your
+responsibility to make your fellow Cosmonauts comfortable. Everyone wants to
+get along and we are all here first and foremost because we want to talk
+about cool technology. You will find that people will be eager to assume
+good intent and forgive as long as you earn their trust.
 
-The enforcement policies listed above apply to all official Tendermint/COSMOS venues.For other projects adopting the Tendermint/COSMOS Code of Conduct, please contact the maintainers of those projects for enforcement. If you wish to use this code of conduct for your own project, consider explicitly mentioning your moderation policy or making a copy with your own moderation policy so as to avoid confusion.
+The enforcement policies listed above apply to all official Tendermint/COSMOS
+venues. For other projects adopting the Tendermint/COSMOS Code of Conduct,
+please contact the maintainers of those projects for enforcement. If you wish to
+use this code of conduct for your own project, consider explicitly mentioning
+your moderation policy or making a copy with your own moderation policy so as to
+avoid confusion.
 
-*Adapted from the [Node.js Policy on Trolling](http://blog.izs.me/post/30036893703/policy-on-trolling), the [Contributor Covenant v1.3.0](http://contributor-covenant.org/version/1/3/0/) and the [Rust Code of Conduct](https://www.rust-lang.org/en-US/conduct.html).
+\*Adapted from the [Node.js Policy on Trolling][node-trolling-policy], the
+[Contributor Covenant v1.3.0][ccov] and the [Rust Code of Conduct][rust-coc].
+
+[ccoc]: https://github.com/stumpsyn/policies/blob/master/citizen_code_of_conduct.md
+[node-trolling-policy]: http://blog.izs.me/post/30036893703/policy-on-trolling
+[ccov]: http://contributor-covenant.org/version/1/3/0/
+[rust-coc]: https://www.rust-lang.org/en-US/conduct.html

CONTRIBUTING.md

@@ -7,7 +7,7 @@ support permissionless value-carrying networks. While all contributions are
 welcome, contributors should bear this goal in mind in deciding if they should
 target the main Tendermint project or a potential fork. When targeting the
 main Tendermint project, the following process leads to the best chance of
-landing changes in master.
+landing changes in `main`.
 
 All work on the code base should be motivated by a [Github
 Issue](https://github.com/tendermint/tendermint/issues).
@@ -26,7 +26,7 @@ will indicate their support with a heartfelt emoji.
 
 If the issue would benefit from thorough discussion, maintainers may
 request that you create a [Request For
-Comment](https://github.com/tendermint/spec/tree/master/rfc)
+Comment](https://github.com/tendermint/tendermint/tree/main/docs/rfc)
 in the Tendermint spec repo. Discussion
 at the RFC stage will build collective understanding of the dimensions
 of the problems and help structure conversations around trade-offs.
@@ -46,7 +46,7 @@ Find the largest existing ADR number and bump it by 1.
 When the problem as well as proposed solution are well understood,
 changes should start with a [draft
 pull request](https://github.blog/2019-02-14-introducing-draft-pull-requests/)
-against master. The draft signals that work is underway. When the work
+against `main`. The draft signals that work is underway. When the work
 is ready for feedback, hitting "Ready for Review" will signal to the
 maintainers to take a look.
 
@@ -54,7 +54,7 @@ maintainers to take a look.
 
 Each stage of the process is aimed at creating feedback cycles which align contributors and maintainers to make sure:
 
-- Contributors don’t waste their time implementing/proposing features which won’t land in master.
+- Contributors don’t waste their time implementing/proposing features which won’t land in `main`.
 - Maintainers have the necessary context in order to support and review contributions.
 
 ## Forking
@@ -73,19 +73,19 @@ For instance, to create a fork and work on a branch of it, I would:
 - `git remote add origin git@github.com:ebuchman/basecoin.git`
 
 Now `origin` refers to my fork and `upstream` refers to the Tendermint version.
-So I can `git push -u origin master` to update my fork, and make pull requests to tendermint from there.
+So I can `git push -u origin main` to update my fork, and make pull requests to tendermint from there.
 Of course, replace `ebuchman` with your git handle.
 
 To pull in updates from the origin repo, run
 
 - `git fetch upstream`
-- `git rebase upstream/master` (or whatever branch you want)
+- `git rebase upstream/main` (or whatever branch you want)
 
 ## Dependencies
 
 We use [go modules](https://github.com/golang/go/wiki/Modules) to manage dependencies.
 
-That said, the master branch of every Tendermint repository should just build
+That said, the `main` branch of every Tendermint repository should just build
 with `go get`, which means they should be kept up-to-date with their
 dependencies so we can get away with telling people they can just `go get` our
 software.
@@ -105,11 +105,33 @@ specify exactly the dependency you want to update, eg.
 
 ## Protobuf
 
-We use [Protocol Buffers](https://developers.google.com/protocol-buffers) along with [gogoproto](https://github.com/gogo/protobuf) to generate code for use across Tendermint Core.
+We use [Protocol Buffers](https://developers.google.com/protocol-buffers) along
+with [`gogoproto`](https://github.com/cosmos/gogoproto) to generate code for use
+across Tendermint Core.
 
-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`.
+To generate proto stubs, lint, and check protos for breaking changes, you will
+need to install [buf](https://buf.build/) and `gogoproto`. Then, from the root
+of the repository, run:
 
-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`.
+```bash
+# Lint all of the .proto files in proto/tendermint
+make proto-lint
+
+# Check if any of your local changes (prior to committing to the Git repository)
+# are breaking
+make proto-check-breaking
+
+# Generate Go code from the .proto files in proto/tendermint
+make proto-gen
+```
+
+To automatically format `.proto` files, you will need
+[`clang-format`](https://clang.llvm.org/docs/ClangFormat.html) installed. Once
+installed, you can run:
+
+```bash
+make proto-format
+```
 
 ### Visual Studio Code
 
@@ -120,7 +142,6 @@ If you are a VS Code user, you may want to add the following to your `.vscode/se
   "protoc": {
     "options": [
       "--proto_path=${workspaceRoot}/proto",
-      "--proto_path=${workspaceRoot}/third_party/proto"
     ]
   }
 }
@@ -131,10 +152,47 @@ If you are a VS Code user, you may want to add the following to your `.vscode/se
 Every fix, improvement, feature, or breaking change should be made in a
 pull-request that includes an update to the `CHANGELOG_PENDING.md` file.
 
+A feature can also be worked on a feature branch, if its size and/or risk
+justifies it (see #branching-model-and-release) below.
+
+### What does a good changelog entry look like?
+
+Changelog entries should answer the question: "what is important about this
+change for users to know?" or "what problem does this solve for users?". It
+should not simply be a reiteration of the title of the associated PR, unless the
+title of the PR _very_ clearly explains the benefit of a change to a user.
+
+Some good examples of changelog entry descriptions:
+
+```md
+- [consensus] \#1111 Small transaction throughput improvement (approximately
+  3-5\% from preliminary tests) through refactoring the way we use channels
+- [mempool] \#1112 Refactor Go API to be able to easily swap out the current
+  mempool implementation in Tendermint forks
+- [p2p] \#1113 Automatically ban peers when their messages are unsolicited or
+  are received too frequently
+```
+
+Some bad examples of changelog entry descriptions:
+
+```md
+- [consensus] \#1111 Refactor channel usage
+- [mempool] \#1112 Make API generic
+- [p2p] \#1113 Ban for PEX message abuse
+```
+
+For more on how to write good changelog entries, see:
+
+- <https://keepachangelog.com>
+- <https://docs.gitlab.com/ee/development/changelog.html#writing-good-changelog-entries>
+- <https://depfu.com/blog/what-makes-a-good-changelog>
+
+### Changelog entry format
+
 Changelog entries should be formatted as follows:
 
 ```md
-- [module] \#xxx Some description about the change (@contributor)
+- [module] \#xxx Some description of the change (@contributor)
 ```
 
 Here, `module` is the part of the code that changed (typically a
@@ -162,22 +220,31 @@ removed from the header in RPC responses as well.
 
 ## Branching Model and Release
 
-The main development branch is master.
+The main development branch is `main`.
 
 Every release is maintained in a release branch named `vX.Y.Z`.
 
-Pending minor releases have long-lived release candidate ("RC") branches. Minor release changes should be merged to these long-lived RC branches at the same time that the changes are merged to master.
+Pending minor releases have long-lived release candidate ("RC") branches. Minor release changes should be merged to these long-lived RC branches at the same time that the changes are merged to `main`.
+
+If a feature's size is big and/or its risk is high, it can be implemented in a feature branch.
+While the feature work is in progress,
+pull requests are open and squash merged against the feature branch.
+Branch `main` is periodically merged (merge commit) into the feature branch,
+to reduce branch divergence.
+When the feature is complete, the feature branch is merged back (merge commit) into `main`.
+The moment of the final merge can be carefully chosen
+so as to land different features in different releases.
 
 Note all pull requests should be squash merged except for merging to a release branch (named `vX.Y`). This keeps the commit history clean and makes it
 easy to reference the pull request where a change was introduced.
 
 ### Development Procedure
 
-The latest state of development is on `master`, which must never fail `make test`. _Never_ force push `master`, unless fixing broken git history (which we rarely do anyways).
+The latest state of development is on `main`, which must never fail `make test`. _Never_ force push `main`, unless fixing broken git history (which we rarely do anyways).
 
 To begin contributing, create a development branch either on `github.com/tendermint/tendermint`, or your fork (using `git remote add origin`).
 
-Make changes, and before submitting a pull request, update the `CHANGELOG_PENDING.md` to record your change. Also, run either `git rebase` or `git merge` on top of the latest `master`. (Since pull requests are squash-merged, either is fine!)
+Make changes, and before submitting a pull request, update the `CHANGELOG_PENDING.md` to record your change. Also, run either `git rebase` or `git merge` on top of the latest `main`. (Since pull requests are squash-merged, either is fine!)
 
 Update the `UPGRADING.md` if the change you've made is breaking and the
 instructions should be in place for a user on how he/she can upgrade it's
@@ -185,7 +252,7 @@ software (ABCI application, Tendermint-based blockchain, light client, wallet).
 
 Once you have submitted a pull request label the pull request with either `R:minor`, if the change should be included in the next minor release, or `R:major`, if the change is meant for a major release.
 
-Sometimes (often!) pull requests get out-of-date with master, as other people merge different pull requests to master. It is our convention that pull request authors are responsible for updating their branches with master. (This also means that you shouldn't update someone else's branch for them; even if it seems like you're doing them a favor, you may be interfering with their git flow in some way!)
+Sometimes (often!) pull requests get out-of-date with `main`, as other people merge different pull requests to `main`. It is our convention that pull request authors are responsible for updating their branches with `main`. (This also means that you shouldn't update someone else's branch for them; even if it seems like you're doing them a favor, you may be interfering with their git flow in some way!)
 
 #### Merging Pull Requests
 
@@ -193,20 +260,20 @@ It is also our convention that authors merge their own pull requests, when possi
 
 Before merging a pull request:
 
-- Ensure pull branch is up-to-date with a recent `master` (GitHub won't let you merge without this!)
+- Ensure pull branch is up-to-date with a recent `main` (GitHub won't let you merge without this!)
 - Run `make test` to ensure that all tests pass
 - [Squash](https://stackoverflow.com/questions/5189560/squash-my-last-x-commits-together-using-git) merge pull request
 
 #### Pull Requests for Minor Releases
 
-If your change should be included in a minor release, please also open a PR against the long-lived minor release candidate branch (e.g., `rc1/v0.33.5`) _immediately after your change has been merged to master_.
+If your change should be included in a minor release, please also open a PR against the long-lived minor release candidate branch (e.g., `rc1/v0.33.5`) _immediately after your change has been merged to main_.
 
-You can do this by cherry-picking your commit off master:
+You can do this by cherry-picking your commit off `main`:
 
 ```sh
 $ git checkout rc1/v0.33.5
 $ git checkout -b {new branch name}
-$ git cherry-pick {commit SHA from master}
+$ git cherry-pick {commit SHA from main}
 # may need to fix conflicts, and then use git add and git cherry-pick --continue
 $ git push origin {new branch name}
 ```
@@ -225,142 +292,7 @@ cmd/debug: execute p.Signal only when p is not nil
 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.
+Each PR should have one commit once it lands on `main`; this can be accomplished by using the "squash and merge" button on Github. Be sure to edit your commit message, though!
 
 ## Testing
 

DOCKER/Dockerfile

@@ -1,14 +1,18 @@
+# Use a build arg to ensure that both stages use the same,
+# hopefully current, go version.
+ARG GOLANG_BASE_IMAGE=golang:1.18-alpine
+
 # stage 1 Generate Tendermint Binary
-FROM golang:1.16-alpine as builder
+FROM --platform=$BUILDPLATFORM $GOLANG_BASE_IMAGE as builder
 RUN apk update && \
     apk upgrade && \
     apk --no-cache add make
 COPY / /tendermint
 WORKDIR /tendermint
-RUN make build-linux
+RUN TARGETPLATFORM=$TARGETPLATFORM make build-linux
 
 # stage 2
-FROM golang:1.15-alpine
+FROM $GOLANG_BASE_IMAGE
 LABEL maintainer="hello@tendermint.com"
 
 # Tendermint will be looking for the genesis file in /tendermint/config/genesis.json
@@ -49,7 +53,7 @@ ENV PROXY_APP=kvstore MONIKER=dockernode CHAIN_ID=dockerchain
 COPY ./DOCKER/docker-entrypoint.sh /usr/local/bin/
 
 ENTRYPOINT ["docker-entrypoint.sh"]
-CMD ["start"]
+CMD ["node"]
 
 # Expose the data directory as a volume since there's mutable state in there
 VOLUME [ "$TMHOME" ]

DOCKER/Dockerfile.build_c-amazonlinux

@@ -9,7 +9,7 @@ RUN wget http://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm &
 RUN yum -y groupinstall "Development Tools"
 RUN yum -y install leveldb-devel which
 
-ENV GOVERSION=1.16.5
+ENV GOVERSION=1.12.9
 
 RUN cd /tmp && \
     wget https://dl.google.com/go/go${GOVERSION}.linux-amd64.tar.gz && \

DOCKER/README.md

@@ -6,7 +6,7 @@ DockerHub tags for official releases are [here](https://hub.docker.com/r/tenderm
 
 Official releases can be found [here](https://github.com/tendermint/tendermint/releases).
 
-The Dockerfile for tendermint is not expected to change in the near future. The master file used for all builds can be found [here](https://raw.githubusercontent.com/tendermint/tendermint/master/DOCKER/Dockerfile).
+The Dockerfile for Tendermint is not expected to change in the near future. The main file used for all builds can be found [here](https://raw.githubusercontent.com/tendermint/tendermint/main/DOCKER/Dockerfile).
 
 Respective versioned files can be found <https://raw.githubusercontent.com/tendermint/tendermint/vX.XX.XX/DOCKER/Dockerfile> (replace the Xs with the version number).
 
@@ -20,9 +20,9 @@ Respective versioned files can be found <https://raw.githubusercontent.com/tende
 
 Tendermint Core is Byzantine Fault Tolerant (BFT) middleware that takes a state transition machine, written in any programming language, and securely replicates it on many machines.
 
-For more background, see the [the docs](https://docs.tendermint.com/master/introduction/#quick-start).
+For more background, see the [the docs](https://docs.tendermint.com/v0.37/introduction/#quick-start).
 
-To get started developing applications, see the [application developers guide](https://docs.tendermint.com/master/introduction/quick-start.html).
+To get started developing applications, see the [application developers guide](https://docs.tendermint.com/v0.37/introduction/quick-start.html).
 
 ## How to use this image
 
@@ -31,13 +31,13 @@ To get started developing applications, see the [application developers guide](h
 A quick example of a built-in app and Tendermint core in one container.
 
 ```sh
-docker run -it --rm -v "/tmp:/tendermint" tendermint/tendermint init validator
-docker run -it --rm -v "/tmp:/tendermint" tendermint/tendermint start --proxy-app=kvstore
+docker run -it --rm -v "/tmp:/tendermint" tendermint/tendermint init
+docker run -it --rm -v "/tmp:/tendermint" tendermint/tendermint node --proxy_app=kvstore
 ```
 
 ## Local cluster
 
-To run a 4-node network, see the `Makefile` in the root of [the repo](https://github.com/tendermint/tendermint/blob/master/Makefile) and run:
+To run a 4-node network, see the `Makefile` in the root of [the repo](https://github.com/tendermint/tendermint/blob/v0.37.x/Makefile) and run:
 
 ```sh
 make build-linux
@@ -49,8 +49,8 @@ Note that this will build and use a different image than the ones provided here.
 
 ## License
 
-- Tendermint's license is [Apache 2.0](https://github.com/tendermint/tendermint/blob/master/LICENSE).
+- Tendermint's license is [Apache 2.0](https://github.com/tendermint/tendermint/blob/main/LICENSE).
 
 ## Contributing
 
-Contributions are most welcome! See the [contributing file](https://github.com/tendermint/tendermint/blob/master/CONTRIBUTING.md) for more information.
+Contributions are most welcome! See the [contributing file](https://github.com/tendermint/tendermint/blob/v0.37.x/CONTRIBUTING.md) for more information.

DOCKER/docker-entrypoint.sh

@@ -3,14 +3,14 @@ set -e
 
 if [ ! -d "$TMHOME/config" ]; then
 	echo "Running tendermint init to create (default) configuration for docker run."
-	tendermint init validator
+	tendermint init
 
 	sed -i \
-		-e "s/^proxy-app\s*=.*/proxy-app = \"$PROXY_APP\"/" \
+		-e "s/^proxy_app\s*=.*/proxy_app = \"$PROXY_APP\"/" \
 		-e "s/^moniker\s*=.*/moniker = \"$MONIKER\"/" \
-		-e 's/^addr-book-strict\s*=.*/addr-book-strict = false/' \
-		-e 's/^timeout-commit\s*=.*/timeout-commit = "500ms"/' \
-		-e 's/^index-all-tags\s*=.*/index-all-tags = true/' \
+		-e 's/^addr_book_strict\s*=.*/addr_book_strict = false/' \
+		-e 's/^timeout_commit\s*=.*/timeout_commit = "500ms"/' \
+		-e 's/^index_all_tags\s*=.*/index_all_tags = true/' \
 		-e 's,^laddr = "tcp://127.0.0.1:26657",laddr = "tcp://0.0.0.0:26657",' \
 		-e 's/^prometheus\s*=.*/prometheus = true/' \
 		"$TMHOME/config/config.toml"

LICENSE

@@ -1,5 +1,3 @@
-Tendermint Core
-License: Apache2.0
 
                                  Apache License
                            Version 2.0, January 2004
@@ -181,7 +179,7 @@ License: Apache2.0
    APPENDIX: How to apply the Apache License to your work.
 
       To apply the Apache License to your work, attach the following
-      boilerplate notice, with the fields enclosed by brackets "{}"
+      boilerplate notice, with the fields enclosed by brackets "[]"
       replaced with your own identifying information. (Don't include
       the brackets!)  The text should be enclosed in the appropriate
       comment syntax for the file format. We also recommend that a
@@ -189,7 +187,7 @@ License: Apache2.0
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright 2016 All in Bits, Inc
+   Copyright [yyyy] [name of copyright owner]
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.

Makefile

@@ -1,7 +1,6 @@
-#!/usr/bin/make -f
-
 PACKAGES=$(shell go list ./...)
-BUILDDIR ?= $(CURDIR)/build
+BUILDDIR?=$(CURDIR)/build
+OUTPUT?=$(BUILDDIR)/tendermint
 
 BUILD_TAGS?=tendermint
 
@@ -12,10 +11,9 @@ else
 VERSION := $(shell git describe)
 endif
 
-LD_FLAGS = -X github.com/tendermint/tendermint/version.TMVersion=$(VERSION)
+LD_FLAGS = -X github.com/tendermint/tendermint/version.TMCoreSemVer=$(VERSION)
 BUILD_FLAGS = -mod=readonly -ldflags "$(LD_FLAGS)"
 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
@@ -55,54 +53,152 @@ endif
 # allow users to pass additional flags via the conventional LDFLAGS variable
 LD_FLAGS += $(LDFLAGS)
 
+# Process Docker environment varible TARGETPLATFORM 
+# in order to build binary with correspondent ARCH
+# by default will always build for linux/amd64
+TARGETPLATFORM ?= 
+GOOS ?= linux
+GOARCH ?= amd64
+GOARM ?=
+
+ifeq (linux/arm,$(findstring linux/arm,$(TARGETPLATFORM)))
+	GOOS=linux
+	GOARCH=arm
+	GOARM=7
+endif
+
+ifeq (linux/arm/v6,$(findstring linux/arm/v6,$(TARGETPLATFORM)))
+	GOOS=linux
+	GOARCH=arm
+	GOARM=6
+endif
+
+ifeq (linux/arm64,$(findstring linux/arm64,$(TARGETPLATFORM)))
+	GOOS=linux
+	GOARCH=arm64
+	GOARM=7
+endif
+
+ifeq (linux/386,$(findstring linux/386,$(TARGETPLATFORM)))
+	GOOS=linux
+	GOARCH=386
+endif
+
+ifeq (linux/amd64,$(findstring linux/amd64,$(TARGETPLATFORM)))
+	GOOS=linux
+	GOARCH=amd64
+endif
+
+ifeq (linux/mips,$(findstring linux/mips,$(TARGETPLATFORM)))
+	GOOS=linux
+	GOARCH=mips
+endif
+
+ifeq (linux/mipsle,$(findstring linux/mipsle,$(TARGETPLATFORM)))
+	GOOS=linux
+	GOARCH=mipsle
+endif
+
+ifeq (linux/mips64,$(findstring linux/mips64,$(TARGETPLATFORM)))
+	GOOS=linux
+	GOARCH=mips64
+endif
+
+ifeq (linux/mips64le,$(findstring linux/mips64le,$(TARGETPLATFORM)))
+	GOOS=linux
+	GOARCH=mips64le
+endif
+
+ifeq (linux/riscv64,$(findstring linux/riscv64,$(TARGETPLATFORM)))
+	GOOS=linux
+	GOARCH=riscv64
+endif
+
 all: check build test install
 .PHONY: all
 
-include test/Makefile
+include tests.mk
 
 ###############################################################################
-###                                Build Tendermint                         ###
+###                                Build Tendermint                        ###
 ###############################################################################
 
-build: $(BUILDDIR)/
-	CGO_ENABLED=$(CGO_ENABLED) go build $(BUILD_FLAGS) -tags '$(BUILD_TAGS)' -o $(BUILDDIR)/ ./cmd/tendermint/
+build:
+	CGO_ENABLED=$(CGO_ENABLED) go build $(BUILD_FLAGS) -tags '$(BUILD_TAGS)' -o $(OUTPUT) ./cmd/tendermint/
 .PHONY: build
 
 install:
 	CGO_ENABLED=$(CGO_ENABLED) go install $(BUILD_FLAGS) -tags $(BUILD_TAGS) ./cmd/tendermint
 .PHONY: install
 
-$(BUILDDIR)/:
-	mkdir -p $@
+###############################################################################
+###                               Metrics                                   ###
+###############################################################################
+
+metrics: testdata-metrics
+	go generate -run="scripts/metricsgen" ./...
+.PHONY: metrics
+
+# By convention, the go tool ignores subdirectories of directories named
+# 'testdata'. This command invokes the generate command on the folder directly
+# to avoid this.
+testdata-metrics:
+	ls ./scripts/metricsgen/testdata | xargs -I{} go generate -v -run="scripts/metricsgen" ./scripts/metricsgen/testdata/{}
+.PHONY: testdata-metrics
+
+###############################################################################
+###                                Mocks                                    ###
+###############################################################################
+
+mockery:
+	go generate -run="./scripts/mockery_generate.sh" ./...
+.PHONY: mockery
 
 ###############################################################################
 ###                                Protobuf                                 ###
 ###############################################################################
 
-proto-all: proto-gen proto-lint proto-check-breaking
-.PHONY: proto-all
+check-proto-deps:
+ifeq (,$(shell which protoc-gen-gogofaster))
+	@go install github.com/cosmos/gogoproto/protoc-gen-gogofaster@latest
+endif
+.PHONY: check-proto-deps
 
-proto-gen:
-	@docker pull -q tendermintdev/docker-build-proto
+check-proto-format-deps:
+ifeq (,$(shell which clang-format))
+	$(error "clang-format is required for Protobuf formatting. See instructions for your platform on how to install it.")
+endif
+.PHONY: check-proto-format-deps
+
+proto-gen: check-proto-deps
 	@echo "Generating Protobuf files"
-	@docker run -v $(shell pwd):/workspace --workdir /workspace tendermintdev/docker-build-proto sh ./scripts/protocgen.sh
+	@go run github.com/bufbuild/buf/cmd/buf generate
+	@mv ./proto/tendermint/abci/types.pb.go ./abci/types/
+	@cp ./proto/tendermint/rpc/grpc/types.pb.go ./rpc/grpc
 .PHONY: proto-gen
 
-proto-lint:
-	@$(DOCKER_BUF) check lint --error-format=json
+# These targets are provided for convenience and are intended for local
+# execution only.
+proto-lint: check-proto-deps
+	@echo "Linting Protobuf files"
+	@go run github.com/bufbuild/buf/cmd/buf lint
 .PHONY: proto-lint
 
-proto-format:
+proto-format: check-proto-format-deps
 	@echo "Formatting Protobuf files"
-	docker run -v $(shell pwd):/workspace --workdir /workspace tendermintdev/docker-build-proto find ./ -not -path "./third_party/*" -name *.proto -exec clang-format -i {} \;
+	@find . -name '*.proto' -path "./proto/*" -exec clang-format -i {} \;
 .PHONY: proto-format
 
-proto-check-breaking:
-	@$(DOCKER_BUF) check breaking --against-input .git#branch=master
+proto-check-breaking: check-proto-deps
+	@echo "Checking for breaking changes in Protobuf files against local branch"
+	@echo "Note: This is only useful if your changes have not yet been committed."
+	@echo "      Otherwise read up on buf's \"breaking\" command usage:"
+	@echo "      https://docs.buf.build/breaking/usage"
+	@go run github.com/bufbuild/buf/cmd/buf breaking --against ".git"
 .PHONY: proto-check-breaking
 
 proto-check-breaking-ci:
-	@$(DOCKER_BUF) check breaking --against-input $(HTTPS_GIT)#branch=master
+	@go run github.com/bufbuild/buf/cmd/buf breaking --against $(HTTPS_GIT)#branch=v0.34.x
 .PHONY: proto-check-breaking-ci
 
 ###############################################################################
@@ -117,27 +213,6 @@ install_abci:
 	@go install -mod=readonly ./abci/cmd/...
 .PHONY: install_abci
 
-###############################################################################
-###                           	Privval Server                              ###
-###############################################################################
-
-build_privval_server:
-	@go build -mod=readonly -o $(BUILDDIR)/ -i ./cmd/priv_val_server/...
-.PHONY: build_privval_server
-
-generate_test_cert:
-	# generate self signing ceritificate authority
-	@certstrap init --common-name "root CA" --expires "20 years"
-	# 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" 
-	# 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" 
-.PHONY: generate_test_cert
-
 ###############################################################################
 ###                              Distribution                               ###
 ###############################################################################
@@ -166,7 +241,7 @@ draw_deps:
 
 get_deps_bin_size:
 	@# Copy of build recipe with additional flags to perform binary size analysis
-	$(eval $(shell go build -work -a $(BUILD_FLAGS) -tags $(BUILD_TAGS) -o $(BUILDDIR)/ ./cmd/tendermint/ 2>&1))
+	$(eval $(shell go build -work -a $(BUILD_FLAGS) -tags $(BUILD_TAGS) -o $(OUTPUT) ./cmd/tendermint/ 2>&1))
 	@find $(WORK) -type f -name "*.a" | xargs -I{} du -hxs "{}" | sort -rh | sed -e s:${WORK}/::g > deps_bin_size.log
 	@echo "Results can be found here: $(CURDIR)/deps_bin_size.log"
 .PHONY: get_deps_bin_size
@@ -202,51 +277,76 @@ format:
 
 lint:
 	@echo "--> Running linter"
-	go run github.com/golangci/golangci-lint/cmd/golangci-lint run
+	@go run github.com/golangci/golangci-lint/cmd/golangci-lint run
 .PHONY: lint
 
+vulncheck:
+	@go run golang.org/x/vuln/cmd/govulncheck@latest ./...
+.PHONY: vulncheck
+
 DESTINATION = ./index.html.md
 
 ###############################################################################
 ###                           Documentation                                 ###
 ###############################################################################
-# todo remove once tendermint.com DNS is solved
+
+DOCS_OUTPUT?=/tmp/tendermint-core-docs
+
+# This builds a docs site for each branch/tag in `./docs/versions` and copies
+# each site to a version prefixed path. The last entry inside the `versions`
+# file will be the default root index.html. Only redirects that are built into
+# the "redirects" folder of each of the branches will be copied out to the root
+# of the build at the end.
 build-docs:
 	@cd docs && \
 	while read -r branch path_prefix; do \
-		(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/$${path_prefix}/index.html ~/output ; \
+		(git checkout $${branch} && npm ci && VUEPRESS_BASE="/$${path_prefix}/" npm run build) ; \
+		mkdir -p $(DOCS_OUTPUT)/$${path_prefix} ; \
+		cp -r .vuepress/dist/* $(DOCS_OUTPUT)/$${path_prefix}/ ; \
+		cp $(DOCS_OUTPUT)/$${path_prefix}/index.html $(DOCS_OUTPUT) ; \
+		cp $(DOCS_OUTPUT)/$${path_prefix}/404.html $(DOCS_OUTPUT) ; \
+		cp -r $(DOCS_OUTPUT)/$${path_prefix}/redirects/* $(DOCS_OUTPUT) || true ; \
 	done < versions ;
 .PHONY: build-docs
 
+# Build and serve the local version of the docs on the current branch from
+# http://0.0.0.0:8080
+serve-docs:
+	@cd docs && \
+		npm ci && \
+		npm run serve
+.PHONY: serve-docs
+
+sync-docs:
+	cd ~/output && \
+	echo "role_arn = ${DEPLOYMENT_ROLE_ARN}" >> /root/.aws/config ; \
+	echo "CI job = ${CIRCLE_BUILD_URL}" >> version.html ; \
+	aws s3 sync . s3://${WEBSITE_BUCKET} --profile terraform --delete ; \
+	aws cloudfront create-invalidation --distribution-id ${CF_DISTRIBUTION_ID} --profile terraform --path "/*" ;
+.PHONY: sync-docs
+
+# Verify that important design docs have ToC entries.
+check-docs-toc:
+	@./docs/presubmit.sh
+.PHONY: check-docs-toc
+
 ###############################################################################
 ###                            Docker image                                 ###
 ###############################################################################
 
 build-docker: build-linux
-	cp $(BUILDDIR)/tendermint DOCKER/tendermint
+	cp $(OUTPUT) DOCKER/tendermint
 	docker build --label=tendermint --tag="tendermint/tendermint" DOCKER
 	rm -rf DOCKER/tendermint
 .PHONY: build-docker
 
-
-###############################################################################
-###                       Mocks 											###
-###############################################################################
-
-mockery:
-	go generate -run="./scripts/mockery_generate.sh" ./...
-.PHONY: mockery
-
 ###############################################################################
 ###                       Local testnet using docker                        ###
 ###############################################################################
 
 # Build linux binary on other platforms
 build-linux:
-	GOOS=linux GOARCH=amd64 $(MAKE) build
+	GOOS=$(GOOS) GOARCH=$(GOARCH) GOARM=$(GOARM) $(MAKE) build
 .PHONY: build-linux
 
 build-docker-localnode:
@@ -290,16 +390,24 @@ contract-tests:
 	dredd
 .PHONY: contract-tests
 
-clean:
-	rm -rf $(CURDIR)/artifacts/ $(BUILDDIR)/
+# Implements test splitting and running. This is pulled directly from
+# the github action workflows for better local reproducibility.
 
-build-reproducible:
-	docker rm latest-build || true
-	docker run --volume=$(CURDIR):/sources:ro \
-		--env TARGET_PLATFORMS='linux/amd64 linux/arm64 darwin/amd64 windows/amd64' \
-		--env APP=tendermint \
-		--env COMMIT=$(shell git rev-parse --short=8 HEAD) \
-		--env VERSION=$(shell git describe --tags) \
-		--name latest-build cosmossdk/rbuilder:latest
-	docker cp -a latest-build:/home/builder/artifacts/ $(CURDIR)/
-.PHONY: build-reproducible
+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

PHILOSOPHY.md

@@ -0,0 +1,158 @@
+# Design goals
+
+The design goals for Tendermint (and the SDK and related libraries) are:
+
+* Simplicity and Legibility
+* Parallel performance, namely ability to utilize multicore architecture
+* Ability to evolve the codebase bug-free
+* Debuggability
+* Complete correctness that considers all edge cases, esp in concurrency
+* Future-proof modular architecture, message protocol, APIs, and encapsulation
+
+
+## Justification
+
+Legibility is key to maintaining bug-free software as it evolves toward more
+optimizations, more ease of debugging, and additional features.
+
+It is too easy to introduce bugs over time by replacing lines of code with
+those that may panic, which means ideally locks are unlocked by defer
+statements.
+
+For example,
+
+```go
+func (obj *MyObj) something() {
+	mtx.Lock()
+	obj.something = other
+	mtx.Unlock()
+}
+```
+
+It is too easy to refactor the codebase in the future to replace `other` with
+`other.String()` for example, and this may introduce a bug that causes a
+deadlock.  So as much as reasonably possible, we need to be using defer
+statements, even though it introduces additional overhead.
+
+If it is necessary to optimize the unlocking of mutex locks, the solution is
+more modularity via smaller functions, so that defer'd unlocks are scoped
+within a smaller function.
+
+Similarly, idiomatic for-loops should always be preferred over those that use
+custom counters, because it is too easy to evolve the body of a for-loop to
+become more complicated over time, and it becomes more and more difficult to
+assess the correctness of such a for-loop by visual inspection.
+
+
+## On performance
+
+It doesn't matter whether there are alternative implementations that are 2x or
+3x more performant, when the software doesn't work, deadlocks, or if bugs
+cannot be debugged.  By taking advantage of multicore concurrency, the
+Tendermint implementation will at least be an order of magnitude within the
+range of what is theoretically possible.  The design philosophy of Tendermint,
+and the choice of Go as implementation language, is designed to make Tendermint
+implementation the standard specification for concurrent BFT software.
+
+By focusing on the message protocols (e.g. ABCI, p2p messages), and
+encapsulation e.g. IAVL module, (relatively) independent reactors, we are both
+implementing a standard implementation to be used as the specification for
+future implementations in more optimizable languages like Rust, Java, and C++;
+as well as creating sufficiently performant software. Tendermint Core will
+never be as fast as future implementations of the Tendermint Spec, because Go
+isn't designed to be as fast as possible.  The advantage of using Go is that we
+can develop the whole stack of modular components **faster** than in other
+languages.
+
+Furthermore, the real bottleneck is in the application layer, and it isn't
+necessary to support more than a sufficiently decentralized set of validators
+(e.g. 100 ~ 300 validators is sufficient, with delegated bonded PoS).
+
+Instead of optimizing Tendermint performance down to the metal, lets focus on
+optimizing on other matters, namely ability to push feature complete software
+that works well enough, can be debugged and maintained, and can serve as a spec
+for future implementations.
+
+
+## On encapsulation
+
+In order to create maintainable, forward-optimizable software, it is critical
+to develop well-encapsulated objects that have well understood properties, and
+to re-use these easy-to-use-correctly components as building blocks for further
+encapsulated meta-objects.
+
+For example, mutexes are cheap enough for Tendermint's design goals when there
+isn't goroutine contention, so it is encouraged to create concurrency safe
+structures with struct-level mutexes.  If they are used in the context of
+non-concurrent logic, then the performance is good enough.  If they are used in
+the context of concurrent logic, then it will still perform correctly.
+
+Examples of this design principle can be seen in the types.ValidatorSet struct,
+and the rand.Rand struct.  It's one single struct declaration that can be used
+in both concurrent and non-concurrent logic, and due to its well encapsulation,
+it's easy to get the usage of the mutex right.
+
+### example: rand.Rand
+
+`The default Source is safe for concurrent use by multiple goroutines, but
+Sources created by NewSource are not`.  The reason why the default
+package-level source is safe for concurrent use is because it is protected (see
+`lockedSource` in <https://golang.org/src/math/rand/rand.go>).
+
+But we shouldn't rely on the global source, we should be creating our own
+Rand/Source instances and using them, especially for determinism in testing.
+So it is reasonable to have rand.Rand be protected by a mutex.  Whether we want
+our own implementation of Rand is another question, but the answer there is
+also in the affirmative.  Sometimes you want to know where Rand is being used
+in your code, so it becomes a simple matter of dropping in a log statement to
+inject inspectability into Rand usage.  Also, it is nice to be able to extend
+the functionality of Rand with custom methods.  For these reasons, and for the
+reasons which is outlined in this design philosophy document, we should
+continue to use the rand.Rand object, with mutex protection.
+
+Another key aspect of good encapsulation is the choice of exposed vs unexposed
+methods.  It should be clear to the reader of the code, which methods are
+intended to be used in what context, and what safe usage is.  Part of this is
+solved by hiding methods via unexported methods.  Another part of this is
+naming conventions on the methods (e.g. underscores) with good documentation,
+and code organization.  If there are too many exposed methods and it isn't
+clear what methods have what side effects, then there is something wrong about
+the design of abstractions that should be revisited.
+
+
+## On concurrency
+
+In order for Tendermint to remain relevant in the years to come, it is vital
+for Tendermint to take advantage of multicore architectures.  Due to the nature
+of the problem, namely consensus across a concurrent p2p gossip network, and to
+handle RPC requests for a large number of consuming subscribers, it is
+unavoidable for Tendermint development to require expertise in concurrency
+design, especially when it comes to the reactor design, and also for RPC
+request handling.
+
+
+# Guidelines
+
+Here are some guidelines for designing for (sufficient) performance and concurrency:
+
+* Mutex locks are cheap enough when there isn't contention.
+* Do not optimize code without analytical or observed proof that it is in a hot path.
+* Don't over-use channels when mutex locks w/ encapsulation are sufficient.
+* The need to drain channels are often a hint of unconsidered edge cases.
+* The creation of O(N) one-off goroutines is generally technical debt that
+   needs to get addressed sooner than later.  Avoid creating too many
+goroutines as a patch around incomplete concurrency design, or at least be
+aware of the debt and do not invest in the debt.  On the other hand, Tendermint
+is designed to have a limited number of peers (e.g. 10 or 20), so the creation
+of O(C) goroutines per O(P) peers is still O(C\*P=constant).
+* Use defer statements to unlock as much as possible.  If you want to unlock sooner,
+    try to create more modular functions that do make use of defer statements.
+
+# Mantras
+
+* Premature optimization kills
+* Readability is paramount
+* Beautiful is better than fast.
+* In the face of ambiguity, refuse the temptation to guess.
+* In the face of bugs, refuse the temptation to cover the bug.
+* There should be one-- and preferably only one --obvious way to do it.

README.md

@@ -2,132 +2,138 @@
 
 ![banner](docs/tendermint-core-image.jpg)
 
-[Byzantine-Fault Tolerant](https://en.wikipedia.org/wiki/Byzantine_fault_tolerance)
-[State Machines](https://en.wikipedia.org/wiki/State_machine_replication).
-Or [Blockchain](<https://en.wikipedia.org/wiki/Blockchain_(database)>), for short.
+[Byzantine-Fault Tolerant][bft] [State Machine Replication][smr]. Or
+[Blockchain], 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/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)
+[![Version][version-badge]][version-url]
+[![API Reference][api-badge]][api-url]
+[![Go version][go-badge]][go-url]
+[![Discord chat][discord-badge]][discord-url]
+[![License][license-badge]][license-url]
+[![Sourcegraph][sg-badge]][sg-url]
 
-| Branch | Tests                                                                                      | Coverage                                                                                                                             | Linting                                                                    |
-|--------|--------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------|
-| master | ![Tests](https://github.com/tendermint/tendermint/workflows/Tests/badge.svg?branch=master) | [![codecov](https://codecov.io/gh/tendermint/tendermint/branch/master/graph/badge.svg)](https://codecov.io/gh/tendermint/tendermint) | ![Lint](https://github.com/tendermint/tendermint/workflows/Lint/badge.svg) |
+| Branch | Tests                              | Linting                         |
+|--------|------------------------------------|---------------------------------|
+| main   | [![Tests][tests-badge]][tests-url] | [![Lint][lint-badge]][lint-url] |
 
-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.
+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, see [the specification](https://github.com/tendermint/spec).
+For protocol details, refer to the [Tendermint Specification](./spec/README.md).
 
-For detailed analysis of the consensus protocol, including safety and liveness proofs,
-see our recent paper, "[The latest gossip on BFT consensus](https://arxiv.org/abs/1807.04938)".
+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/).
 
 ## Releases
 
-Please do not depend on master as your production branch. Use [releases](https://github.com/tendermint/tendermint/releases) instead.
+Please do not depend on `main` 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. 
-See below for more details about [versioning](#versioning).
+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.berlin) or [join the chat](https://discord.gg/vcExX9T).
+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).
 
 ## Security
 
 To report a security vulnerability, see our [bug bounty
-program](https://hackerone.com/tendermint). 
-For examples of the kinds of bugs we're looking for, see [our security policy](SECURITY.md).
+program](https://hackerone.com/cosmos). 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
-to notify you of vulnerabilities and fixes in Tendermint Core. You can subscribe [here](http://eepurl.com/gZ5hQD).
+We also maintain a dedicated mailing list for security updates. We will only
+ever use this mailing list to notify you of vulnerabilities and fixes in
+Tendermint Core. You can subscribe [here](http://eepurl.com/gZ5hQD).
 
 ## Minimum requirements
 
-| Requirement | Notes            |
-|-------------|------------------|
-| Go version  | Go1.16 or higher |
-
-## Documentation
-
-Complete documentation can be found on the [website](https://docs.tendermint.com/master/).
+| Requirement | Notes             |
+|-------------|-------------------|
+| Go version  | Go 1.18 or higher |
 
 ### 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/networks/docker-compose.md)
-- [Remote cluster using Terraform and Ansible](/docs/networks/terraform-and-ansible.md)
-- [Join the Cosmos testnet](https://cosmos.network/testnet)
+- [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)
 
 ## Contributing
 
 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](https://github.com/tendermint/spec), watch the [Developer Sessions](/docs/DEV_SESSIONS.md), 
-and familiarize yourself with our
-[Architectural Decision Records](https://github.com/tendermint/tendermint/tree/master/docs/architecture).
+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), and familiarize
+yourself with our [Architectural Decision Records
+(ADRs)](./docs/architecture/README.md) and
+[Request For Comments (RFCs)](./docs/rfc/README.md).
 
 ## Versioning
 
 ### Semantic Versioning
 
-Tendermint uses [Semantic Versioning](http://semver.org/) to determine when and how the version changes.
-According to SemVer, anything in the public API can change at any time before version 1.0.0
+Tendermint uses [Semantic Versioning](http://semver.org/) to determine when and
+how the version changes. According to SemVer, anything in the public API can
+change at any time before version 1.0.0
 
-To provide some stability to users of 0.X.X versions of Tendermint, the MINOR version is used
-to signal breaking changes across Tendermint's API. This API includes all
-publicly exposed types, functions, and methods in non-internal Go packages as well as
-the types and methods accessible via the Tendermint RPC interface.
+To provide some stability to users of 0.X.X versions of Tendermint, the MINOR
+version is used to signal breaking changes across Tendermint's API. This API
+includes all publicly exposed types, functions, and methods in non-internal Go
+packages as well as the types and methods accessible via the Tendermint RPC
+interface.
 
 Breaking changes to these public APIs will be documented in the CHANGELOG.
 
 ### Upgrades
 
-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 
-compatible with existing blockchain histories.
-
+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 compatible with existing
+blockchain histories.
 
 For more information on upgrading, see [UPGRADING.md](./UPGRADING.md).
 
 ### Supported Versions
 
-Because we are a small core team, we only ship patch updates, including security updates,
-to the most recent minor release and the second-most recent minor release. Consequently,
-we strongly recommend keeping Tendermint up-to-date. Upgrading instructions can be found
-in [UPGRADING.md](./UPGRADING.md).
+Because we are a small core team, we only ship patch updates, including security
+updates, to the most recent minor release and the second-most recent minor
+release. Consequently, we strongly recommend keeping Tendermint up-to-date.
+Upgrading instructions can be found in [UPGRADING.md](./UPGRADING.md).
 
 ## Resources
 
-### Tendermint Core
+### Libraries
 
-For details about the blockchain data structures and the p2p protocols, see the
-[Tendermint specification](https://docs.tendermint.com/master/spec/).
-
-For details on using the software, see the [documentation](/docs/) which is also
-hosted at: <https://docs.tendermint.com/master/>
-
-### 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).
+- [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)
 
 ### Applications
 
-- [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)
+- [Cosmos Hub](https://hub.cosmos.network/)
+- [Terra](https://www.terra.money/)
+- [Celestia](https://celestia.org/)
+- [Anoma](https://anoma.network/)
+- [Vocdoni](https://docs.vocdoni.io/)
 
 ### Research
 
@@ -140,8 +146,30 @@ Additional tooling can be found in [/docs/tools](/docs/tools).
 ## 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/p/682fb7e8a6f601-software-engineer-tendermint-core)!
+If you'd like to work full-time on Tendermint Core,
+[we're hiring](https://interchain-gmbh.breezy.hr/)!
 
-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
- that also maintains [tendermint.com](https://tendermint.com).
+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 that also maintains [tendermint.com](https://tendermint.com).
+
+[bft]: https://en.wikipedia.org/wiki/Byzantine_fault_tolerance
+[smr]: https://en.wikipedia.org/wiki/State_machine_replication
+[Blockchain]: https://en.wikipedia.org/wiki/Blockchain
+[version-badge]: https://img.shields.io/github/tag/tendermint/tendermint.svg
+[version-url]: https://github.com/tendermint/tendermint/releases/latest
+[api-badge]: https://camo.githubusercontent.com/915b7be44ada53c290eb157634330494ebe3e30a/68747470733a2f2f676f646f632e6f72672f6769746875622e636f6d2f676f6c616e672f6764646f3f7374617475732e737667
+[api-url]: https://pkg.go.dev/github.com/tendermint/tendermint
+[go-badge]: https://img.shields.io/badge/go-1.18-blue.svg
+[go-url]: https://github.com/moovweb/gvm
+[discord-badge]: https://img.shields.io/discord/669268347736686612.svg
+[discord-url]: https://discord.gg/cosmosnetwork
+[license-badge]: https://img.shields.io/github/license/tendermint/tendermint.svg
+[license-url]: https://github.com/tendermint/tendermint/blob/main/LICENSE
+[sg-badge]: https://sourcegraph.com/github.com/tendermint/tendermint/-/badge.svg
+[sg-url]: https://sourcegraph.com/github.com/tendermint/tendermint?badge
+[tests-url]: https://github.com/tendermint/tendermint/actions/workflows/tests.yml
+[tests-badge]: https://github.com/tendermint/tendermint/actions/workflows/tests.yml/badge.svg?branch=main
+[lint-badge]: https://github.com/tendermint/tendermint/actions/workflows/lint.yml/badge.svg
+[lint-url]: https://github.com/tendermint/tendermint/actions/workflows/lint.yml

RELEASES.md

@@ -0,0 +1,379 @@
+# Releases
+
+Tendermint uses modified [semantic versioning](https://semver.org/) with each
+release following a `vX.Y.Z` format. Tendermint is currently on major version 0
+and uses the minor version to signal breaking changes. The `main` branch is
+used for active development and thus it is not advisable to build against it.
+
+The latest changes are always initially merged into `main`. Releases are
+specified using tags and are built from long-lived "backport" branches that are
+cut from `main` 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 `main`, 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 v0.38.x, add the label
+`S:backport-to-v0.38.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 minor version release, e.g.
+v0.25.0, 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 `main` so that `go mod` is able to order the branches correctly. You
+should tag `main` 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 0.38.x line.
+
+1. Start on `main`
+
+2. Ensure that there is a [branch protection
+   rule](https://github.com/tendermint/tendermint/settings/branches) for the
+   branch you are about to create (you will need admin access to the repository
+   in order to do this).
+
+3. Create and push the backport branch:
+   ```sh
+   git checkout -b v0.38.x
+   git push origin v0.38.x
+   ```
+
+4. Create a PR to update the documentation directory for the backport branch.
+
+   We rewrite any URLs pointing to `main` to point to the backport branch,
+   so that generated documentation will link to the correct versions of files
+   elsewhere in the repository. The following files are to be excluded from this
+   search:
+
+   * [`README.md`](./README.md)
+   * [`CHANGELOG.md`](./CHANGELOG.md)
+   * [`UPGRADING.md`](./UPGRADING.md)
+
+   The following links are to always point to `main`, regardless of where they
+   occur in the codebase:
+
+   * `https://github.com/tendermint/tendermint/blob/main/LICENSE`
+
+   Be sure to search for all of the following links and replace `main` with your
+   corresponding branch label or version (e.g. `v0.38.x` or `v0.38`):
+
+   * `github.com/tendermint/tendermint/blob/main` ->
+     `github.com/tendermint/tendermint/blob/v0.38.x`
+   * `github.com/tendermint/tendermint/tree/main` ->
+     `github.com/tendermint/tendermint/tree/v0.38.x`
+   * `docs.tendermint.com/main` -> `docs.tendermint.com/v0.38`
+
+   Once you have updated all of the relevant documentation:
+   ```sh
+   # Create and push the PR.
+   git checkout -b update-docs-v038x
+   git commit -m "Update docs for v0.38.x backport branch."
+   git push -u origin update-docs-v038x
+   ```
+
+   Be sure to merge this PR before making other changes on the newly-created
+   backport branch.
+
+After doing these steps, go back to `main` and do the following:
+
+1. Tag `main` as the dev branch for the _next_ minor version release and push
+   it up to GitHub.
+   For example:
+   ```sh
+   git tag -a v0.39.0-dev -m "Development base for Tendermint v0.39."
+   git push origin v0.39.0-dev
+   ```
+
+2. Create a new workflow to run e2e nightlies for the new backport branch. (See
+   [e2e-nightly-main.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-v0.38.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/main/.github/workflows/e2e-nightly-main.yml
+
+## Pre-releases
+
+Before creating an official release, especially a minor release, we may want to
+create an alpha or beta version, or release candidate (RC) for our friends and
+partners to test out. We use git tags to create pre-releases, and we build them
+off of backport branches, for example:
+
+- `v0.38.0-alpha.1` - The first alpha release of `v0.38.0`. Subsequent alpha
+  releases will be numbered `v0.38.0-alpha.2`, `v0.38.0-alpha.3`, etc.
+
+  Alpha releases are to be considered the _most_ unstable of pre-releases, and
+  are most likely not yet properly QA'd. These are made available to allow early
+  adopters to start integrating and testing new functionality before we're done
+  with QA.
+
+- `v0.38.0-beta.1` - The first beta release of `v0.38.0`. Subsequent beta
+  releases will be numbered `v0.38.0-beta.2`, `v0.38.0-beta.3`, etc.
+
+  Beta releases can be considered more stable than alpha releases in that we
+  will have QA'd them better than alpha releases, but there still may be
+  minor breaking API changes if users have strong demands for such changes.
+
+- `v0.38.0-rc1` - The first release candidate (RC) of `v0.38.0`. Subsequent RCs
+  will be numbered `v0.38.0-rc2`, `v0.38.0-rc3`, etc.
+
+  RCs are considered more stable than beta releases in that we will have
+  completed our QA on them. APIs will most likely be stable at this point. The
+  difference between an RC and a release is that there may still be small
+  changes (bug fixes, features) that may make their way into the series before
+  cutting a final release.
+
+(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 pre-release for a minor release, you'll have to make a new
+backport branch (see above). Otherwise:
+
+1. Start from the backport branch (e.g. `v0.38.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-37x.yml).
+3. Prepare the pre-release documentation:
+   - Ensure that all relevant changes are in the `CHANGELOG_PENDING.md` file.
+     This file's contents must only be included in the `CHANGELOG.md` when we
+     cut final releases.
+   - Ensure that `UPGRADING.md` is up-to-date and includes notes on any breaking changes
+      or other upgrading flows.
+4. Prepare the versioning:
+   - 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
+5. Open a PR with these changes against the backport branch.
+6. Once these changes have landed on the backport branch, be sure to pull them back down locally.
+7. Once you have the changes locally, create the new tag, specifying a name and a tag "message":
+   `git tag -a v0.38.0-rc1 -m "Release Candidate v0.38.0-rc1`
+8. Push the tag back up to origin:
+   `git push origin v0.38.0-rc1`
+   Now the tag should be available on the repo's releases page.
+9. Future pre-releases will continue to be built off of this branch.
+
+## Minor release
+
+This minor 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.
+
+Before performing these steps, be sure the
+[Minor Release Checklist](#minor-release-checklist) has been completed.
+
+1. Start on the backport branch (e.g. `v0.38.x`)
+2. Run integration tests (`make test_integrations`) and the e2e nightlies.
+3. Prepare the release:
+   - "Squash" changes from the changelog entries for the pre-releases 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-pre-release 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 `v0.38.0`.
+   - `git tag -a v0.38.0 -m 'Release v0.38.0'`
+   - `git push origin v0.38.0`
+6. Make sure that `main` 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 `main`.
+   - 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 `main` and backport them into the backport
+     branch for this release.
+
+## Patch release
+
+Patch releases are done differently from minor releases: They are built off of
+long-lived backport branches, rather than from main.  As non-breaking changes
+land on `main`, they should also be backported into these backport branches.
+
+Patch releases don't have release candidates by default, although any tricky
+changes may merit a release candidate.
+
+To create a patch release:
+
+1. Checkout the long-lived backport branch: `git checkout v0.38.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 patch releases, and only field additions are valid patch changes.)
+4. Open a PR with these changes that will land them back on `v0.38.x`
+5. Once this change has landed on the backport branch, make sure to pull it locally, then push a tag.
+   - `git tag -a v0.38.1 -m 'Release v0.38.1'`
+   - `git push origin v0.38.1`
+6. Create a pull request back to main with the CHANGELOG & version changes from the latest release.
+   - Remove all `R:patch` labels from the pull requests that were included in the release.
+   - Do not merge the backport branch into main.
+
+## Minor Release Checklist
+
+The following set of steps are performed on all releases that increment the
+_minor_ version, e.g. v0.25 to v0.26. These steps ensure that Tendermint is well
+tested, stable, and suitable for adoption by the various diverse projects that
+rely on Tendermint.
+
+### Feature Freeze
+
+Ahead of any minor version release of Tendermint, the software enters 'Feature
+Freeze' for at least two weeks. A feature freeze means that _no_ new features
+are added to the code being prepared for release. No code changes should be made
+to the code being released that do not directly improve pressing issues of code
+quality. The following must not be merged during a feature freeze:
+
+* Refactors that are not related to specific bug fixes.
+* Dependency upgrades.
+* New test code that does not test a discovered regression.
+* New features of any kind.
+* Documentation or spec improvements that are not related to the newly developed
+  code.
+
+This period directly follows the creation of the [backport
+branch](#creating-a-backport-branch). The Tendermint team instead directs all
+attention to ensuring that the existing code is stable and reliable. Broken
+tests are fixed, flakey-tests are remedied, end-to-end test failures are
+thoroughly diagnosed and all efforts of the team are aimed at improving the
+quality of the code. During this period, the upgrade harness tests are run
+repeatedly and a variety of in-house testnets are run to ensure Tendermint
+functions at the scale it will be used by application developers and node
+operators.
+
+### Nightly End-To-End Tests
+
+The Tendermint team maintains [a set of end-to-end
+tests](https://github.com/tendermint/tendermint/blob/main/test/e2e/README.md#L1)
+that run each night on the latest commit of the project and on the code in the
+tip of each supported backport branch. These tests start a network of
+containerized Tendermint processes and run automated checks that the network
+functions as expected in both stable and unstable conditions. During the feature
+freeze, these tests are run nightly and must pass consistently for a release of
+Tendermint to be considered stable.
+
+### Upgrade Harness
+
+> TODO(williambanfield): Change to past tense and clarify this section once
+> upgrade harness is complete.
+
+The Tendermint team is creating an upgrade test harness to exercise the workflow
+of stopping an instance of Tendermint running one version of the software and
+starting up the same application running the next version. To support upgrade
+testing, we will add the ability to terminate the Tendermint process at specific
+pre-defined points in its execution so that we can verify upgrades work in a
+representative sample of stop conditions.
+
+### Large Scale Testnets
+
+The Tendermint end-to-end tests run a small network (~10s of nodes) to exercise
+basic consensus interactions. Real world deployments of Tendermint often have
+over a hundred nodes just in the validator set, with many others acting as full
+nodes and sentry nodes. To gain more assurance before a release, we will also
+run larger-scale test networks to shake out emergent behaviors at scale.
+
+Large-scale test networks are run on a set of virtual machines (VMs). Each VM is
+equipped with 4 Gigabytes of RAM and 2 CPU cores. The network runs a very simple
+key-value store application. The application adds artificial delays to different
+ABCI calls to simulate a slow application. Each testnet is briefly run with no
+load being generated to collect a baseline performance. Once baseline is
+captured, a consistent load is applied across the network. This load takes the
+form of 10% of the running nodes all receiving a consistent stream of two
+hundred transactions per minute each.
+
+During each test net, the following metrics are monitored and collected on each
+node:
+
+* Consensus rounds per height
+* Maximum connected peers, Minimum connected peers, Rate of change of peer connections
+* Memory resident set size
+* CPU utilization
+* Blocks produced per minute
+* Seconds for each step of consensus (Propose, Prevote, Precommit, Commit)
+* Latency to receive block proposals
+
+For these tests we intentionally target low-powered host machines (with low core
+counts and limited memory) to ensure we observe similar kinds of resource contention
+and limitation that real-world  deployments of Tendermint experience in production.
+
+#### 200 Node Testnet
+
+To test the stability and performance of Tendermint in a real world scenario,
+a 200 node test network is run. The network comprises 5 seed nodes, 100
+validators and 95 non-validating full nodes. All nodes begin by dialing
+a subset of the seed nodes to discover peers. The network is run for several
+days, with metrics being collected continuously. In cases of changes to performance
+critical systems, testnets of larger sizes should be considered.
+
+#### Rotating Node Testnet
+
+Real-world deployments of Tendermint frequently see new nodes arrive and old
+nodes exit the network. The rotating node testnet ensures that Tendermint is
+able to handle this reliably. In this test, a network with 10 validators and
+3 seed nodes is started. A rolling set of 25 full nodes are started and each
+connects to the network by dialing one of the seed nodes. Once the node is able
+to blocksync to the head of the chain and begins producing blocks using
+Tendermint consensus it is stopped. Once stopped, a new node is started and
+takes its place. This network is run for several days.
+
+#### Network Partition Testnet
+
+Tendermint is expected to recover from network partitions. A partition where no
+subset of the nodes is left with the super-majority of the stake is expected to
+stop making blocks. Upon alleviation of the partition, the network is expected
+to once again become fully connected and capable of producing blocks. The
+network partition testnet ensures that Tendermint is able to handle this
+reliably at scale. In this test, a network with 100 validators and 95 full
+nodes is started. All validators have equal stake. Once the network is
+producing blocks, a set of firewall rules is deployed to create a partitioned
+network with 50% of the stake on one side and 50% on the other. Once the
+network stops producing blocks, the firewall rules are removed and the nodes
+are monitored to ensure they reconnect and that the network again begins
+producing blocks.
+
+#### Absent Stake Testnet
+
+Tendermint networks often run with _some_ portion of the voting power offline.
+The absent stake testnet ensures that large networks are able to handle this
+reliably. A set of 150 validator nodes and three seed nodes is started. The set
+of 150 validators is configured to only possess a cumulative stake of 67% of
+the total stake. The remaining 33% of the stake is configured to belong to
+a validator that is never actually run in the test network. The network is run
+for multiple days, ensuring that it is able to produce blocks without issue.

SECURITY.md

@@ -2,51 +2,83 @@
 
 ## Reporting a Bug
 
-As part of our [Coordinated Vulnerability Disclosure
-Policy](https://tendermint.com/security), we operate a [bug
-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.
+As part of our [Coordinated Vulnerability Disclosure Policy](https://tendermint.com/security),
+we operate a [bug bounty][hackerone]. 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
 
 We require that all researchers:
 
-* Use the bug bounty to disclose all vulnerabilities, and avoid posting vulnerability information in public places, including Github Issues, Discord channels, and Telegram groups
-* Make every effort to avoid privacy violations, degradation of user experience, disruption to production systems (including but not limited to the Cosmos Hub), and destruction of data
-* Keep any information about vulnerabilities that you’ve discovered confidential between yourself and the Tendermint Core engineering team until the issue has been resolved and disclosed
+* Use the bug bounty to disclose all vulnerabilities, and avoid posting
+  vulnerability information in public places, including Github Issues, Discord
+  channels, and Telegram groups
+* Make every effort to avoid privacy violations, degradation of user experience,
+  disruption to production systems (including but not limited to the Cosmos
+  Hub), and destruction of data
+* Keep any information about vulnerabilities that you’ve discovered confidential
+  between yourself and the Tendermint Core engineering team until the issue has
+  been resolved and disclosed
 * Avoid posting personally identifiable information, privately or publicly
 
 If you follow these guidelines when reporting an issue to us, we commit to:
 
-* Not pursue or support any legal action related to your research on this vulnerability
-* Work with you to understand, resolve and ultimately disclose the issue in a timely fashion
+* Not pursue or support any legal action related to your research on this
+  vulnerability
+* Work with you to understand, resolve and ultimately disclose the issue in a
+  timely fashion
 
 ## Disclosure Process
 
 Tendermint Core uses the following disclosure process:
 
-1. Once a security report is received, the Tendermint Core team works to verify the issue and confirm its severity level using CVSS.
-2. The Tendermint Core team collaborates with the Gaia team to determine the vulnerability’s potential impact on the Cosmos Hub.
-3. Patches are prepared for eligible releases of Tendermint in private repositories. See “Supported Releases” below for more information on which releases are considered eligible.
-4. If it is determined that a CVE-ID is required, we request a CVE through a CVE Numbering Authority.
-5. We notify the community that a security release is coming, to give users time to prepare their systems for the update. Notifications can include forum posts, tweets, and emails to partners and validators, including emails sent to the [Tendermint Security Mailing List](https://berlin.us4.list-manage.com/subscribe?u=431b35421ff7edcc77df5df10&id=3fe93307bc).
-6. 24 hours following this notification, the fixes are applied publicly and new releases are issued.
-7. Cosmos SDK and Gaia update their Tendermint Core dependencies to use these releases, and then themselves issue new releases.
-8. Once releases are available for Tendermint Core, Cosmos SDK and Gaia, we notify the community, again, through the same channels as above. We also publish a Security Advisory on Github and publish the CVE, as long as neither the Security Advisory nor the CVE include any information on how to exploit these vulnerabilities beyond what information is already available in the patch itself.
-9. Once the community is notified, we will pay out any relevant bug bounties to submitters.
-10. One week after the releases go out, we will publish a post with further details on the vulnerability as well as our response to it.
+1. Once a security report is received, the Tendermint Core team works to verify
+   the issue and confirm its severity level using CVSS.
+2. The Tendermint Core team collaborates with the Gaia team to determine the
+   vulnerability’s potential impact on the Cosmos Hub.
+3. Patches are prepared for eligible releases of Tendermint in private
+   repositories. See “Supported Releases” below for more information on which
+   releases are considered eligible.
+4. If it is determined that a CVE-ID is required, we request a CVE through a CVE
+   Numbering Authority.
+5. We notify the community that a security release is coming, to give users time
+   to prepare their systems for the update. Notifications can include forum
+   posts, tweets, and emails to partners and validators, including emails sent
+   to the [Tendermint Security Mailing List][tmsec-mailing].
+6. 24 hours following this notification, the fixes are applied publicly and new
+   releases are issued.
+7. Cosmos SDK and Gaia update their Tendermint Core dependencies to use these
+   releases, and then themselves issue new releases.
+8. Once releases are available for Tendermint Core, Cosmos SDK and Gaia, we
+   notify the community, again, through the same channels as above. We also
+   publish a Security Advisory on Github and publish the CVE, as long as neither
+   the Security Advisory nor the CVE include any information on how to exploit
+   these vulnerabilities beyond what information is already available in the
+   patch itself.
+9. Once the community is notified, we will pay out any relevant bug bounties to
+   submitters.
+10. One week after the releases go out, we will publish a post with further
+    details on the vulnerability as well as our response to it.
 
-This process can take some time. Every effort will be made to handle the bug in as timely a manner as possible, however it's important that we follow the process described above to ensure that disclosures are handled consistently and to keep Tendermint Core and its downstream dependent projects--including but not limited to Gaia and the Cosmos Hub--as secure as possible.
+This process can take some time. Every effort will be made to handle the bug in
+as timely a manner as possible, however it's important that we follow the
+process described above to ensure that disclosures are handled consistently and
+to keep Tendermint Core and its downstream dependent projects--including but not
+limited to Gaia and the Cosmos Hub--as secure as possible.
 
 ### Example Timeline
 
-The following is an example timeline for the triage and response. The required roles and team members are described in parentheses after each task; however, multiple people can play each role and each person may play multiple roles.
+The following is an example timeline for the triage and response. The required
+roles and team members are described in parentheses after each task; however,
+multiple people can play each role and each person may play multiple roles.
 
 #### 24+ Hours Before Release Time
 
 1. Request CVE number (ADMIN)
 2. Gather emails and other contact info for validators (COMMS LEAD)
-3. Create patches in a private security repo, and ensure that PRs are open targeting all relevant release branches (TENDERMINT ENG, TENDERMINT LEAD)
+3. Create patches in a private security repo, and ensure that PRs are open
+   targeting all relevant release branches (TENDERMINT ENG, TENDERMINT LEAD)
 4. Test fixes on a testnet  (TENDERMINT ENG, COSMOS SDK ENG)
 5. Write “Security Advisory” for forum (TENDERMINT LEAD)
 
@@ -54,19 +86,23 @@ The following is an example timeline for the triage and response. The required r
 
 1. Post “Security Advisory” pre-notification on forum (TENDERMINT LEAD)
 2. Post Tweet linking to forum post (COMMS LEAD)
-3. Announce security advisory/link to post in various other social channels (Telegram, Discord) (COMMS LEAD)
+3. Announce security advisory/link to post in various other social channels
+   (Telegram, Discord) (COMMS LEAD)
 4. Send emails to validators or other users (PARTNERSHIPS LEAD)
 
 #### Release Time
 
-1. Cut Tendermint releases for eligible versions (TENDERMINT ENG, TENDERMINT LEAD)
+1. Cut Tendermint releases for eligible versions (TENDERMINT ENG, TENDERMINT
+   LEAD)
 2. Cut Cosmos SDK release for eligible versions (COSMOS ENG)
 3. Cut Gaia release for eligible versions (GAIA ENG)
 4. Post “Security releases” on forum (TENDERMINT LEAD)
 5. Post new Tweet linking to forum post (COMMS LEAD)
-6. Remind everyone via social channels (Telegram, Discord)  that the release is out (COMMS LEAD)
+6. Remind everyone via social channels (Telegram, Discord)  that the release is
+   out (COMMS LEAD)
 7. Send emails to validators or other users (COMMS LEAD)
-8. Publish Security Advisory and CVE, if CVE has no sensitive information (ADMIN)
+8. Publish Security Advisory and CVE, if CVE has no sensitive information
+   (ADMIN)
 
 #### After Release Time
 
@@ -80,13 +116,22 @@ The following is an example timeline for the triage and response. The required r
 
 ## Supported Releases
 
-The Tendermint Core team commits to releasing security patch releases for both the latest minor release as well for the major/minor release that the Cosmos Hub is running.
+The Tendermint Core team commits to releasing security patch releases for both
+the latest minor release as well for the major/minor release that the Cosmos Hub
+is running.
 
-If you are running older versions of Tendermint Core, we encourage you to upgrade at your earliest opportunity so that you can receive security patches directly from the Tendermint repo. While you are welcome to backport security patches to older versions for your own use, we will not publish or promote these backports.
+If you are running older versions of Tendermint Core, we encourage you to
+upgrade at your earliest opportunity so that you can receive security patches
+directly from the Tendermint repo. While you are welcome to backport security
+patches to older versions for your own use, we will not publish or promote these
+backports.
 
 ## 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:
+The full scope of our bug bounty program is outlined on our
+[Hacker One program page][hackerone]. 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
@@ -94,7 +139,9 @@ The full scope of our bug bounty program is outlined on our [Hacker One program
 
 ## Example Vulnerabilities
 
-The following is a list of examples of the kinds of vulnerabilities that we’re most interested in. It is not exhaustive: there are other kinds of issues we may also be interested in!
+The following is a list of examples of the kinds of vulnerabilities that we’re
+most interested in. It is not exhaustive: there are other kinds of issues we may
+also be interested in!
 
 ### Specification
 
@@ -106,7 +153,8 @@ The following is a list of examples of the kinds of vulnerabilities that we’re
 
 Assuming less than 1/3 of the voting power is Byzantine (malicious):
 
-* Validation of blockchain data structures, including blocks, block parts, votes, and so on
+* Validation of blockchain data structures, including blocks, block parts,
+  votes, and so on
 * Execution of blocks
 * Validator set changes
 * Proposer round robin
@@ -156,3 +204,6 @@ Attacks may come through the P2P network or the RPC layer:
 
 * Core verification
 * Bisection/sequential algorithms
+
+[hackerone]: https://hackerone.com/cosmos
+[tmsec-mailing]: https://berlin.us4.list-manage.com/subscribe?u=431b35421ff7edcc77df5df10&id=3fe93307bc

STYLE_GUIDE.md

@@ -98,7 +98,7 @@ Sometimes it's necessary to rename libraries to avoid naming collisions or ambig
     * Make use of table driven testing where possible and not-cumbersome
         * [Inspiration](https://dave.cheney.net/2013/06/09/writing-table-driven-tests-in-go)
     * Make use of [assert](https://godoc.org/github.com/stretchr/testify/assert) and [require](https://godoc.org/github.com/stretchr/testify/require)
-* When using mocks, it is recommended to use Testify [mock] (<https://pkg.go.dev/github.com/stretchr/testify/mock>
+* When using mocks, it is recommended to use Testify [mock](<https://pkg.go.dev/github.com/stretchr/testify/mock>
  ) along with [Mockery](https://github.com/vektra/mockery) for autogeneration
 
 ## Errors

UPGRADING.md

@@ -1,191 +1,51 @@
 # Upgrading Tendermint Core
 
-This guide provides instructions for upgrading to specific versions of Tendermint Core.
+This guide provides instructions for upgrading to specific versions of
+Tendermint Core.
 
-## v0.35
+## v0.37.0
 
 ### ABCI Changes
 
-* Added `AbciVersion` to `RequestInfo`. Applications should check that the ABCI version they expect is being used in order to avoid unimplemented changes errors.
-* The method `SetOption` has been removed from the ABCI.Client interface. This feature was used in the early ABCI implementation's.
-* Messages are written to a byte stream using uin64 length delimiters instead of int64.
-* When mempool `v1` is enabled, transactions broadcasted via `sync` mode may return a successful
-  response with a transaction hash indicating that the transaction was successfully inserted into
-  the mempool. While this is true for `v0`, the `v1` mempool reactor may at a later point in time
-  evict or even drop this transaction after a hash has been returned. Thus, the user or client must
-  query for that transaction to check if it is still in the mempool.
+* The `ABCIVersion` is now `1.0.0`.
 
-### Config Changes
+* Added new ABCI methods `PrepareProposal` and `ProcessProposal`. For details,
+  please see the [spec](spec/abci/README.md). Applications upgrading to
+  v0.37.0 must implement these methods, at the very minimum, as described
+  [here](/spec/abci/abci%2B%2B_tmint_expected_behavior.md#adapting-existing-applications-that-use-abci)
+* Deduplicated `ConsensusParams` and `BlockParams`.
+  In the v0.34 branch they are defined both in `abci/types.proto` and `types/params.proto`.
+  The definitions in `abci/types.proto` have been removed.
+  In-process applications should make sure they are not using the deleted
+  version of those structures.
+* In v0.34, messages on the wire used to be length-delimited with `int64` varint
+  values, which was inconsistent with the `uint64` varint length delimiters used
+  in the P2P layer. Both now consistently use `uint64` varint length delimiters.
+* Added `AbciVersion` to `RequestInfo`.
+  Applications should check that Tendermint's ABCI version matches the one they expect
+  in order to ensure compatibility.
+* The `SetOption` method has been removed from the ABCI `Client` interface.
+  The corresponding Protobuf types have been deprecated.
+* The `key` and `value` fields in the `EventAttribute` type have been changed
+  from type `bytes` to `string`. As per the [Protocol Buffers updating
+  guidelines](https://developers.google.com/protocol-buffers/docs/proto3#updating),
+  this should have no effect on the wire-level encoding for UTF8-encoded
+  strings.
 
-* The configuration file field `[fastsync]` has been renamed to `[blocksync]`.
+## v0.34.20
 
-* The top level configuration file field `fast-sync` has moved under the new `[blocksync]`
-  field as `blocksync.enable`.
+### Feature: Priority Mempool
 
-* `blocksync.version = "v1"` and `blocksync.version = "v2"` (previously `fastsync`)
-  are no longer supported. Please use `v0` instead. During the v0.35 release cycle, `v0` was
-  determined to suit the existing needs and the cost of maintaining the `v1` and `v2` modules
-  was determined to be greater than necessary.
+This release backports an implementation of the Priority Mempool from the v0.35
+branch. This implementation of the mempool permits the application to set a
+priority on each transaction during CheckTx, and during block selection the
+highest-priority transactions are chosen (subject to the constraints on size
+and gas cost).
 
-
-* All config parameters are now hyphen-case (also known as kebab-case) instead of snake_case. Before restarting the node make sure
-  you have updated all the variables in your `config.toml` file.
-
-* Added `--mode` flag and `mode` config variable on `config.toml` for setting Mode of the Node: `full` | `validator` | `seed` (default: `full`)
-  [ADR-52](https://github.com/tendermint/tendermint/blob/master/docs/architecture/adr-052-tendermint-mode.md)
-
-* `BootstrapPeers` has been added as part of the new p2p stack. This will eventually replace
-  `Seeds`. Bootstrap peers are connected with on startup if needed for peer discovery. Unlike
-  persistent peers, there's no gaurantee that the node will remain connected with these peers.
-
-* configuration values starting with `priv-validator-` have moved to the new
-  `priv-validator` section, without the `priv-validator-` prefix.
-
-* The fast sync process as well as the blockchain package and service has all
-  been renamed to block sync
-
-### Database Key Format Changes
-
-The format of all tendermint on-disk database keys changes in
-0.35. Upgrading nodes must either re-sync all data or run a migration
-script provided in this release. The script located in
-`github.com/tendermint/tendermint/scripts/keymigrate/migrate.go`
-provides the function `Migrate(context.Context, db.DB)` which you can
-operationalize as makes sense for your deployment.
-
-For ease of use the `tendermint` command includes a CLI version of the
-migration script, which you can invoke, as in:
-
-	tendermint key-migrate
-
-This reads the configuration file as normal and allows the
-`--db-backend` and `--db-dir` flags to change database operations as
-needed.
-
-The migration operation is idempotent and can be run more than once,
-if needed.
-
-### CLI Changes
-
-* You must now specify the node mode (validator|full|seed) in `tendermint init [mode]`
-
-* The `--fast-sync` command line option has been renamed to `--blocksync.enable`
-
-* If you had previously used `tendermint gen_node_key` to generate a new node
-  key, keep in mind that it no longer saves the output to a file. You can use
-  `tendermint init validator` or pipe the output of `tendermint gen_node_key` to
-  `$TMHOME/config/node_key.json`:
-
-  ```
-  $ tendermint gen_node_key > $TMHOME/config/node_key.json
-  ```
-
-* CLI commands and flags are all now hyphen-case instead of snake_case.
-  Make sure to adjust any scripts that calls a cli command with snake_casing
-
-### API Changes
-
-The p2p layer was reimplemented as part of the 0.35 release cycle and
-all reactors were refactored to accomodate the change. As part of that work these
-implementations moved into the `internal` package and are no longer
-considered part of the public Go API of tendermint. These packages
-are:
-
-- `p2p`
-- `mempool`
-- `consensus`
-- `statesync`
-- `blockchain`
-- `evidence`
-
-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:
-
-- The `Node` type has become internal, and all constructors return a
-  `service.Service` implementation.
-
-- The `node.DefaultNewNode` and `node.NewNode` constructors are no
-  longer exported and have been replaced with `node.New` and
-  `node.NewDefault` which provide more functional interfaces.
-
-### gRPC Support
-
-Mark gRPC in the RPC layer as deprecated and to be removed in 0.36.
-
-### Peer Management Interface
-
-When running with the new P2P Layer, the methods `UnsafeDialSeeds` and
-`UnsafeDialPeers` RPC methods will always return an error. They are
-deprecated and will be removed in 0.36 when the legacy peer stack is
-removed.
-
-Additionally the format of the Peer list returned in the `NetInfo`
-method changes in this release to accommodate the different way that
-the new stack tracks data about peers. This change affects users of
-both stacks.
-
-### Using the updated p2p library
-
-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, 
-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 
-your server's configuration file under the `[p2p]` section:
-
-```toml
-[p2p]
-...
-use-legacy = true
-...
-```
-
-If you need to do this, please consider filing an issue in the Tendermint repository
-to let us know why. We plan to remove the legacy P2P code in the next (v0.36) release.
-
-#### New p2p queue types
-
-The new p2p implementation enables selection of the queue type to be used for
-passing messages between peers.
-
-The following values may be used when selecting which queue type to use:
-
-* `fifo`: (**default**) An unbuffered and lossless queue that passes messages through
-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 
-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
-flows are passed.
-For more information on WDRR scheduling, see: https://en.wikipedia.org/wiki/Deficit_round_robin
-
-To select a queue type, add or update the following field under the `[p2p]`
-section of your server's configuration file.
-
-```toml
-[p2p]
-...
-queue-type = wdrr
-...
-```
-
-
-### Support for Custom Reactor and Mempool Implementations
-
-The changes to p2p layer removed existing support for custom
-reactors. Based on our understanding of how this functionality was
-used, the introduction of the prioritized mempool covers nearly all of
-the use cases for custom reactors. If you are currently running custom
-reactors and mempools and are having trouble seeing the migration path
-for your project please feel free to reach out to the Tendermint Core
-development team directly.
+Operators can enable the priority mempool by setting `mempool.version` to
+`"v1"` in the `config.toml`. For more technical details about the priority
+mempool, see [ADR 067: Mempool
+Refactor](https://github.com/tendermint/tendermint/blob/main/docs/architecture/adr-067-mempool-refactor.md).
 
 ## v0.34.0
 
@@ -203,7 +63,7 @@ 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://docs.tendermint.com/master/spec/abci/apps.html#state-sync)
+  Read [the spec](https://github.com/tendermint/tendermint/blob/v0.34.x/spec/abci/apps.md#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.)
@@ -219,7 +79,7 @@ Note also that Tendermint 0.34 also requires Go 1.16 or higher.
   Applications should be able to handle these evidence types
   (i.e., through slashing or other accountability measures).
 
-* The [`PublicKey` type](https://github.com/tendermint/tendermint/blob/master/proto/tendermint/crypto/keys.proto#L13-L15)
+* The [`PublicKey` type](https://github.com/tendermint/tendermint/blob/main/proto/tendermint/crypto/keys.proto#L13-L15)
   (used in ABCI as part of `ValidatorUpdate`) now uses a `oneof` protobuf type.
   Note that since Tendermint only supports ed25519 validator keys, there's only one
   option in the `oneof`.  For more, see "Protocol Buffers," below.
@@ -227,8 +87,6 @@ Note also that Tendermint 0.34 also requires Go 1.16 or higher.
 * The field `Proof`, on the ABCI type `ResponseQuery`, is now named `ProofOps`.
   For more, see "Crypto," below.
 
-* The method `SetOption` has been removed from the ABCI.Client interface. This feature was used in the early ABCI implementation's.
-
 ### P2P Protocol
 
 The default codec is now proto3, not amino. The schema files can be found in the `/proto`
@@ -237,8 +95,8 @@ directory. For more, see "Protobuf," below.
 ### Blockchain Protocol
 
 * `Header#LastResultsHash`, which is the root hash of a Merkle tree built from
-`ResponseDeliverTx(Code, Data)` as of v0.34 also includes `GasWanted` and `GasUsed`
-fields.
+  `ResponseDeliverTx(Code, Data)` as of v0.34 also includes `GasWanted` and `GasUsed`
+  fields.
 
 * Merkle hashes of empty trees previously returned nothing, but now return the hash of an empty input,
   to conform with [RFC-6962](https://tools.ietf.org/html/rfc6962).
@@ -328,7 +186,7 @@ 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.
+See [the docs](https://docs.tendermint.com/v0.33/tendermint-core/light-client-protocol.html#http-proxy) for details.
 
 ### Light Client
 
@@ -340,9 +198,9 @@ Other user-relevant changes include:
 
 * The old `lite` package was removed; the new light client uses the `light` package.
 * The `Verifier` was broken up into two pieces:
-	* Core verification logic (pure `VerifyX` functions)
-	* `Client` object, which represents the complete light client
-* The new light clients stores headers & validator sets as `LightBlock`s
+    * Core verification logic (pure `VerifyX` functions)
+    * `Client` object, which represents the complete light client
+* The new light client stores headers and validator sets as `LightBlock`s
 * The RPC client can be found in the `/rpc` directory.
 * The HTTP(S) proxy is located in the `/proxy` directory.
 
@@ -473,18 +331,18 @@ Evidence Params has been changed to include duration.
 ### Go API
 
 * `libs/common` has been removed in favor of specific pkgs.
-	* `async`
-	* `service`
-	* `rand`
-	* `net`
-	* `strings`
-	* `cmap`
+    * `async`
+    * `service`
+    * `rand`
+    * `net`
+    * `strings`
+    * `cmap`
 * removal of `errors` pkg
 
 ### RPC Changes
 
 * `/validators` is now paginated (default: 30 vals per page)
-* `/block_results` response format updated [see RPC docs for details](https://docs.tendermint.com/master/rpc/#/Info/block_results)
+* `/block_results` response format updated [see RPC docs for details](https://docs.tendermint.com/v0.33/rpc/#/Info/block_results)
 * Event suffix has been removed from the ID in event responses
 * IDs are now integers not `json-client-XYZ`
 
@@ -547,9 +405,9 @@ Prior to the update, suppose your `ResponseDeliverTx` look like:
 ```go
 abci.ResponseDeliverTx{
   Tags: []kv.Pair{
-	{Key: []byte("sender"), Value: []byte("foo")},
-	{Key: []byte("recipient"), Value: []byte("bar")},
-	{Key: []byte("amount"), Value: []byte("35")},
+    {Key: []byte("sender"), Value: []byte("foo")},
+    {Key: []byte("recipient"), Value: []byte("bar")},
+    {Key: []byte("amount"), Value: []byte("35")},
   }
 }
 ```
@@ -568,14 +426,14 @@ the following `Events`:
 ```go
 abci.ResponseDeliverTx{
   Events: []abci.Event{
-	{
-	  Type: "transfer",
-	  Attributes: kv.Pairs{
-		{Key: []byte("sender"), Value: []byte("foo")},
-		{Key: []byte("recipient"), Value: []byte("bar")},
-		{Key: []byte("amount"), Value: []byte("35")},
-	  },
-	}
+    {
+      Type: "transfer",
+      Attributes: kv.Pairs{
+        {Key: []byte("sender"), Value: []byte("foo")},
+        {Key: []byte("recipient"), Value: []byte("bar")},
+        {Key: []byte("amount"), Value: []byte("35")},
+      },
+    }
 }
 ```
 
@@ -603,11 +461,11 @@ 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://tendermint.com/docs/introduction/install.html#compile-with-cleveldb-support>)
+<https://docs.tendermint.com/v0.33/introduction/install.html#compile-with-cleveldb-support>)
 
 ## v0.31.0
 
-This release contains a breaking change to the behaviour of the pubsub system.
+This release contains a breaking change to the behavior of the pubsub system.
 It also contains some minor breaking changes in the Go API and ABCI.
 There are no changes to the block or p2p protocols, so v0.31.0 should work fine
 with blockchains created from the v0.30 series.
@@ -623,9 +481,9 @@ In this case, the WS client will receive an error with description:
   "jsonrpc": "2.0",
   "id": "{ID}#event",
   "error": {
-	"code": -32000,
-	"msg": "Server error",
-	"data": "subscription was canceled (reason: client is not pulling messages fast enough)" // or "subscription was canceled (reason: Tendermint exited)"
+    "code": -32000,
+    "msg": "Server error",
+    "data": "subscription was canceled (reason: client is not pulling messages fast enough)" // or "subscription was canceled (reason: Tendermint exited)"
   }
 }
 
@@ -678,14 +536,14 @@ due to changes in how various data structures are hashed.
 Any implementations of Tendermint blockchain verification, including lite clients,
 will need to be updated. For specific details:
 
-* [Merkle tree](https://github.com/tendermint/spec/blob/master/spec/blockchain/encoding.md#merkle-trees)
-* [ConsensusParams](https://github.com/tendermint/spec/blob/master/spec/blockchain/state.md#consensusparams)
+* [Merkle tree](https://github.com/tendermint/tendermint/blob/main/spec/blockchain/encoding.md#merkle-trees)
+* [ConsensusParams](https://github.com/tendermint/tendermint/blob/main/spec/blockchain/state.md#consensusparams)
 
 There was also a small change to field ordering in the vote struct. Any
 implementations of an out-of-process validator (like a Key-Management Server)
 will need to be updated. For specific details:
 
-* [Vote](https://github.com/tendermint/spec/blob/master/spec/consensus/signing.md#votes)
+* [Vote](https://github.com/tendermint/tendermint/blob/main/spec/consensus/signing.md#votes)
 
 Finally, the proposer selection algorithm continues to evolve. See the
 [work-in-progress
@@ -806,7 +664,7 @@ to `timeout_propose = "3s"`.
 
 ### RPC Changes
 
-The default behaviour of `/abci_query` has been changed to not return a proof,
+The default behavior of `/abci_query` has been changed to not return a proof,
 and the name of the parameter that controls this has been changed from `trusted`
 to `prove`. To get proofs with your queries, ensure you set `prove=true`.
 
@@ -831,9 +689,9 @@ just the `Data` field set:
 
 ```go
 []ProofOp{
-	ProofOp{
-		Data: <proof bytes>,
-	}
+    ProofOp{
+        Data: <proof bytes>,
+    }
 }
 ```
 

Vagrantfile

@@ -0,0 +1,66 @@
+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+
+Vagrant.configure("2") do |config|
+  config.vm.box = "ubuntu/focal64"
+
+  config.vm.provider "virtualbox" do |v|
+    v.memory = 4096
+    v.cpus = 2
+  end
+
+  config.vm.provision "shell", inline: <<-SHELL
+    apt-get update
+
+    # install base requirements
+    apt-get install -y --no-install-recommends wget curl jq zip \
+        make shellcheck bsdmainutils psmisc
+    apt-get install -y language-pack-en
+
+    # install docker
+    apt-get install -y --no-install-recommends apt-transport-https \
+      ca-certificates \
+      curl \
+      gnupg-agent \
+      software-properties-common
+    curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add -
+    add-apt-repository \
+      "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
+      $(lsb_release -cs) \
+      stable"
+    apt-get update
+    apt-get install -y docker-ce
+    usermod -aG docker vagrant
+
+    # install go
+    wget -q https://dl.google.com/go/go1.15.linux-amd64.tar.gz
+    tar -xvf go1.15.linux-amd64.tar.gz
+    mv go /usr/local
+    rm -f go1.15.linux-amd64.tar.gz
+
+    # install nodejs (for docs)
+    curl -sL https://deb.nodesource.com/setup_11.x | bash -
+    apt-get install -y nodejs
+
+    # cleanup
+    apt-get autoremove -y
+
+    # set env variables
+    echo 'export GOROOT=/usr/local/go' >> /home/vagrant/.bash_profile
+    echo 'export GOPATH=/home/vagrant/go' >> /home/vagrant/.bash_profile
+    echo 'export PATH=$PATH:$GOROOT/bin:$GOPATH/bin' >> /home/vagrant/.bash_profile
+    echo 'export LC_ALL=en_US.UTF-8' >> /home/vagrant/.bash_profile
+    echo 'cd go/src/github.com/tendermint/tendermint' >> /home/vagrant/.bash_profile
+
+    mkdir -p /home/vagrant/go/bin
+    mkdir -p /home/vagrant/go/src/github.com/tendermint
+    ln -s /vagrant /home/vagrant/go/src/github.com/tendermint/tendermint
+
+    chown -R vagrant:vagrant /home/vagrant/go
+    chown vagrant:vagrant /home/vagrant/.bash_profile
+
+    # get all deps and tools, ready to install/test
+    su - vagrant  -c 'source /home/vagrant/.bash_profile'
+    su - vagrant -c 'cd /home/vagrant/go/src/github.com/tendermint/tendermint && make tools'
+  SHELL
+end

abci/README.md

@@ -19,8 +19,8 @@ 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](https://github.com/tendermint/spec/blob/master/spec/abci/abci.md)
-- [A protobuf file](../proto/tendermint/abci/types.proto)
+- [The main spec](https://github.com/tendermint/tendermint/blob/v0.37.x/spec/abci/abci.md)
+- [A protobuf file](./types/types.proto)
 - [A Go interface](./types/application.go)
 
 ## Protocol Buffers

abci/client/client.go

@@ -1,13 +1,12 @@
 package abcicli
 
 import (
-	"context"
 	"fmt"
 	"sync"
 
 	"github.com/tendermint/tendermint/abci/types"
-	tmsync "github.com/tendermint/tendermint/internal/libs/sync"
 	"github.com/tendermint/tendermint/libs/service"
+	tmsync "github.com/tendermint/tendermint/libs/sync"
 )
 
 const (
@@ -18,50 +17,49 @@ const (
 //go:generate ../../scripts/mockery_generate.sh Client
 
 // Client defines an interface for an ABCI client.
-//
-// All `Async` methods return a `ReqRes` object and an error.
+// All `Async` methods return a `ReqRes` object.
 // 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
-// and logs.
+// Note these are client errors, eg. ABCI socket connectivity issues.
+// Application-related errors are reflected in response via ABCI error codes and logs.
 type Client interface {
 	service.Service
 
 	SetResponseCallback(Callback)
 	Error() 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)
+	FlushAsync() *ReqRes
+	EchoAsync(msg string) *ReqRes
+	InfoAsync(types.RequestInfo) *ReqRes
+	DeliverTxAsync(types.RequestDeliverTx) *ReqRes
+	CheckTxAsync(types.RequestCheckTx) *ReqRes
+	QueryAsync(types.RequestQuery) *ReqRes
+	CommitAsync() *ReqRes
+	InitChainAsync(types.RequestInitChain) *ReqRes
+	PrepareProposalAsync(types.RequestPrepareProposal) *ReqRes
+	BeginBlockAsync(types.RequestBeginBlock) *ReqRes
+	EndBlockAsync(types.RequestEndBlock) *ReqRes
+	ListSnapshotsAsync(types.RequestListSnapshots) *ReqRes
+	OfferSnapshotAsync(types.RequestOfferSnapshot) *ReqRes
+	LoadSnapshotChunkAsync(types.RequestLoadSnapshotChunk) *ReqRes
+	ApplySnapshotChunkAsync(types.RequestApplySnapshotChunk) *ReqRes
+	ProcessProposalAsync(types.RequestProcessProposal) *ReqRes
 
-	// 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)
+	FlushSync() error
+	EchoSync(msg string) (*types.ResponseEcho, error)
+	InfoSync(types.RequestInfo) (*types.ResponseInfo, error)
+	DeliverTxSync(types.RequestDeliverTx) (*types.ResponseDeliverTx, error)
+	CheckTxSync(types.RequestCheckTx) (*types.ResponseCheckTx, error)
+	QuerySync(types.RequestQuery) (*types.ResponseQuery, error)
+	CommitSync() (*types.ResponseCommit, error)
+	InitChainSync(types.RequestInitChain) (*types.ResponseInitChain, error)
+	PrepareProposalSync(types.RequestPrepareProposal) (*types.ResponsePrepareProposal, error)
+	BeginBlockSync(types.RequestBeginBlock) (*types.ResponseBeginBlock, error)
+	EndBlockSync(types.RequestEndBlock) (*types.ResponseEndBlock, error)
+	ListSnapshotsSync(types.RequestListSnapshots) (*types.ResponseListSnapshots, error)
+	OfferSnapshotSync(types.RequestOfferSnapshot) (*types.ResponseOfferSnapshot, error)
+	LoadSnapshotChunkSync(types.RequestLoadSnapshotChunk) (*types.ResponseLoadSnapshotChunk, error)
+	ApplySnapshotChunkSync(types.RequestApplySnapshotChunk) (*types.ResponseApplySnapshotChunk, error)
+	ProcessProposalSync(types.RequestProcessProposal) (*types.ResponseProcessProposal, error)
 }
 
 //----------------------------------------
@@ -87,9 +85,15 @@ type ReqRes struct {
 	*sync.WaitGroup
 	*types.Response // Not set atomically, so be sure to use WaitGroup.
 
-	mtx  tmsync.RWMutex
-	done bool                  // Gets set to true once *after* WaitGroup.Done().
-	cb   func(*types.Response) // A single callback that may be set.
+	mtx tmsync.Mutex
+
+	// callbackInvoked as a variable to track if the callback was already
+	// invoked during the regular execution of the request. This variable
+	// allows clients to set the callback simultaneously without potentially
+	// invoking the callback twice by accident, once when 'SetCallback' is
+	// called and once during the normal request.
+	callbackInvoked bool
+	cb              func(*types.Response) // A single callback that may be set.
 }
 
 func NewReqRes(req *types.Request) *ReqRes {
@@ -98,8 +102,8 @@ func NewReqRes(req *types.Request) *ReqRes {
 		WaitGroup: waitGroup1(),
 		Response:  nil,
 
-		done: false,
-		cb:   nil,
+		callbackInvoked: false,
+		cb:              nil,
 	}
 }
 
@@ -109,7 +113,7 @@ func NewReqRes(req *types.Request) *ReqRes {
 func (r *ReqRes) SetCallback(cb func(res *types.Response)) {
 	r.mtx.Lock()
 
-	if r.done {
+	if r.callbackInvoked {
 		r.mtx.Unlock()
 		cb(r.Response)
 		return
@@ -128,6 +132,7 @@ func (r *ReqRes) InvokeCallback() {
 	if r.cb != nil {
 		r.cb(r.Response)
 	}
+	r.callbackInvoked = true
 }
 
 // GetCallback returns the configured callback of the ReqRes object which may be
@@ -137,16 +142,9 @@ func (r *ReqRes) InvokeCallback() {
 //
 // 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
+	return r.cb
 }
 
 func waitGroup1() (wg *sync.WaitGroup) {

abci/client/doc.go

@@ -1,29 +0,0 @@
-// Package abcicli provides an ABCI implementation in Go.
-//
-// There are 3 clients available:
-//		1. socket (unix or TCP)
-//		2. local (in memory)
-//		3. gRPC
-//
-// ## Socket client
-//
-// 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
-//
-// async: global mutex is locked during each call (meaning it's not really async!)
-// sync: global mutex is locked during each call
-//
-// ## gRPC client
-//
-// 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

@@ -1,21 +1,24 @@
 package abcicli
 
 import (
-	"context"
 	"fmt"
 	"net"
 	"sync"
 	"time"
 
+	"golang.org/x/net/context"
 	"google.golang.org/grpc"
 
 	"github.com/tendermint/tendermint/abci/types"
-	tmsync "github.com/tendermint/tendermint/internal/libs/sync"
 	tmnet "github.com/tendermint/tendermint/libs/net"
 	"github.com/tendermint/tendermint/libs/service"
+	tmsync "github.com/tendermint/tendermint/libs/sync"
 )
 
-// A gRPC client.
+var _ Client = (*grpcClient)(nil)
+
+// A stripped copy of the remoteClient that makes
+// synchronous calls using grpc
 type grpcClient struct {
 	service.BaseService
 	mustConnect bool
@@ -24,24 +27,12 @@ type grpcClient struct {
 	conn     *grpc.ClientConn
 	chReqRes chan *ReqRes // dispatches "async" responses to callbacks *in order*, needed by mempool
 
-	mtx   tmsync.RWMutex
+	mtx   tmsync.Mutex
 	addr  string
 	err   error
 	resCb func(*types.Request, *types.Response) // listens to all callbacks
 }
 
-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.
-//
-// 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{
 		addr:        addr,
@@ -63,6 +54,10 @@ func dialerFunc(ctx context.Context, addr string) (net.Conn, error) {
 }
 
 func (cli *grpcClient) OnStart() error {
+	if err := cli.BaseService.OnStart(); err != nil {
+		return err
+	}
+
 	// This processes asynchronous request/response messages and dispatches
 	// them to callbacks.
 	go func() {
@@ -71,7 +66,6 @@ func (cli *grpcClient) OnStart() error {
 			cli.mtx.Lock()
 			defer cli.mtx.Unlock()
 
-			reqres.SetDone()
 			reqres.Done()
 
 			// Notify client listener if set
@@ -80,9 +74,7 @@ func (cli *grpcClient) OnStart() error {
 			}
 
 			// Notify reqRes listener if set
-			if cb := reqres.GetCallback(); cb != nil {
-				cb(reqres.Response)
-			}
+			reqres.InvokeCallback()
 		}
 		for reqres := range cli.chReqRes {
 			if reqres != nil {
@@ -95,6 +87,7 @@ func (cli *grpcClient) OnStart() error {
 
 RETRY_LOOP:
 	for {
+		//nolint:staticcheck // SA1019 Existing use of deprecated but supported dial option.
 		conn, err := grpc.Dial(cli.addr, grpc.WithInsecure(), grpc.WithContextDialer(dialerFunc))
 		if err != nil {
 			if cli.mustConnect {
@@ -125,6 +118,8 @@ RETRY_LOOP:
 }
 
 func (cli *grpcClient) OnStop() {
+	cli.BaseService.OnStop()
+
 	if cli.conn != nil {
 		cli.conn.Close()
 	}
@@ -149,8 +144,8 @@ func (cli *grpcClient) StopForError(err error) {
 }
 
 func (cli *grpcClient) Error() error {
-	cli.mtx.RLock()
-	defer cli.mtx.RUnlock()
+	cli.mtx.Lock()
+	defer cli.mtx.Unlock()
 	return cli.err
 }
 
@@ -158,173 +153,170 @@ func (cli *grpcClient) Error() error {
 // NOTE: callback may get internally generated flush responses.
 func (cli *grpcClient) SetResponseCallback(resCb Callback) {
 	cli.mtx.Lock()
-	defer cli.mtx.Unlock()
 	cli.resCb = resCb
+	cli.mtx.Unlock()
 }
 
 //----------------------------------------
+// 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
 
-// NOTE: call is synchronous, use ctx to break early if needed
-func (cli *grpcClient) EchoAsync(ctx context.Context, msg string) (*ReqRes, error) {
+func (cli *grpcClient) EchoAsync(msg string) *ReqRes {
 	req := types.ToRequestEcho(msg)
-	res, err := cli.client.Echo(ctx, req.GetEcho(), grpc.WaitForReady(true))
+	res, err := cli.client.Echo(context.Background(), req.GetEcho(), grpc.WaitForReady(true))
 	if err != nil {
-		return nil, err
+		cli.StopForError(err)
 	}
-	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_Echo{Echo: res}})
+	return cli.finishAsyncCall(req, &types.Response{Value: &types.Response_Echo{Echo: res}})
 }
 
-// NOTE: call is synchronous, use ctx to break early if needed
-func (cli *grpcClient) FlushAsync(ctx context.Context) (*ReqRes, error) {
+func (cli *grpcClient) FlushAsync() *ReqRes {
 	req := types.ToRequestFlush()
-	res, err := cli.client.Flush(ctx, req.GetFlush(), grpc.WaitForReady(true))
+	res, err := cli.client.Flush(context.Background(), req.GetFlush(), grpc.WaitForReady(true))
 	if err != nil {
-		return nil, err
+		cli.StopForError(err)
 	}
-	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_Flush{Flush: res}})
+	return cli.finishAsyncCall(req, &types.Response{Value: &types.Response_Flush{Flush: res}})
 }
 
-// NOTE: call is synchronous, use ctx to break early if needed
-func (cli *grpcClient) InfoAsync(ctx context.Context, params types.RequestInfo) (*ReqRes, error) {
+func (cli *grpcClient) InfoAsync(params types.RequestInfo) *ReqRes {
 	req := types.ToRequestInfo(params)
-	res, err := cli.client.Info(ctx, req.GetInfo(), grpc.WaitForReady(true))
+	res, err := cli.client.Info(context.Background(), req.GetInfo(), grpc.WaitForReady(true))
 	if err != nil {
-		return nil, err
+		cli.StopForError(err)
 	}
-	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_Info{Info: res}})
+	return cli.finishAsyncCall(req, &types.Response{Value: &types.Response_Info{Info: res}})
 }
 
-// NOTE: call is synchronous, use ctx to break early if needed
-func (cli *grpcClient) DeliverTxAsync(ctx context.Context, params types.RequestDeliverTx) (*ReqRes, error) {
+func (cli *grpcClient) DeliverTxAsync(params types.RequestDeliverTx) *ReqRes {
 	req := types.ToRequestDeliverTx(params)
-	res, err := cli.client.DeliverTx(ctx, req.GetDeliverTx(), grpc.WaitForReady(true))
+	res, err := cli.client.DeliverTx(context.Background(), req.GetDeliverTx(), grpc.WaitForReady(true))
 	if err != nil {
-		return nil, err
+		cli.StopForError(err)
 	}
-	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_DeliverTx{DeliverTx: res}})
+	return cli.finishAsyncCall(req, &types.Response{Value: &types.Response_DeliverTx{DeliverTx: res}})
 }
 
-// NOTE: call is synchronous, use ctx to break early if needed
-func (cli *grpcClient) CheckTxAsync(ctx context.Context, params types.RequestCheckTx) (*ReqRes, error) {
+func (cli *grpcClient) CheckTxAsync(params types.RequestCheckTx) *ReqRes {
 	req := types.ToRequestCheckTx(params)
-	res, err := cli.client.CheckTx(ctx, req.GetCheckTx(), grpc.WaitForReady(true))
+	res, err := cli.client.CheckTx(context.Background(), req.GetCheckTx(), grpc.WaitForReady(true))
 	if err != nil {
-		return nil, err
+		cli.StopForError(err)
 	}
-	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_CheckTx{CheckTx: res}})
+	return cli.finishAsyncCall(req, &types.Response{Value: &types.Response_CheckTx{CheckTx: res}})
 }
 
-// NOTE: call is synchronous, use ctx to break early if needed
-func (cli *grpcClient) QueryAsync(ctx context.Context, params types.RequestQuery) (*ReqRes, error) {
+func (cli *grpcClient) QueryAsync(params types.RequestQuery) *ReqRes {
 	req := types.ToRequestQuery(params)
-	res, err := cli.client.Query(ctx, req.GetQuery(), grpc.WaitForReady(true))
+	res, err := cli.client.Query(context.Background(), req.GetQuery(), grpc.WaitForReady(true))
 	if err != nil {
-		return nil, err
+		cli.StopForError(err)
 	}
-	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_Query{Query: res}})
+	return cli.finishAsyncCall(req, &types.Response{Value: &types.Response_Query{Query: res}})
 }
 
-// NOTE: call is synchronous, use ctx to break early if needed
-func (cli *grpcClient) CommitAsync(ctx context.Context) (*ReqRes, error) {
+func (cli *grpcClient) CommitAsync() *ReqRes {
 	req := types.ToRequestCommit()
-	res, err := cli.client.Commit(ctx, req.GetCommit(), grpc.WaitForReady(true))
+	res, err := cli.client.Commit(context.Background(), req.GetCommit(), grpc.WaitForReady(true))
 	if err != nil {
-		return nil, err
+		cli.StopForError(err)
 	}
-	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_Commit{Commit: res}})
+	return cli.finishAsyncCall(req, &types.Response{Value: &types.Response_Commit{Commit: res}})
 }
 
-// NOTE: call is synchronous, use ctx to break early if needed
-func (cli *grpcClient) InitChainAsync(ctx context.Context, params types.RequestInitChain) (*ReqRes, error) {
+func (cli *grpcClient) InitChainAsync(params types.RequestInitChain) *ReqRes {
 	req := types.ToRequestInitChain(params)
-	res, err := cli.client.InitChain(ctx, req.GetInitChain(), grpc.WaitForReady(true))
+	res, err := cli.client.InitChain(context.Background(), req.GetInitChain(), grpc.WaitForReady(true))
 	if err != nil {
-		return nil, err
+		cli.StopForError(err)
 	}
-	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_InitChain{InitChain: res}})
+	return cli.finishAsyncCall(req, &types.Response{Value: &types.Response_InitChain{InitChain: res}})
 }
 
-// NOTE: call is synchronous, use ctx to break early if needed
-func (cli *grpcClient) BeginBlockAsync(ctx context.Context, params types.RequestBeginBlock) (*ReqRes, error) {
+func (cli *grpcClient) BeginBlockAsync(params types.RequestBeginBlock) *ReqRes {
 	req := types.ToRequestBeginBlock(params)
-	res, err := cli.client.BeginBlock(ctx, req.GetBeginBlock(), grpc.WaitForReady(true))
+	res, err := cli.client.BeginBlock(context.Background(), req.GetBeginBlock(), grpc.WaitForReady(true))
 	if err != nil {
-		return nil, err
+		cli.StopForError(err)
 	}
-	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_BeginBlock{BeginBlock: res}})
+	return cli.finishAsyncCall(req, &types.Response{Value: &types.Response_BeginBlock{BeginBlock: res}})
 }
 
-// NOTE: call is synchronous, use ctx to break early if needed
-func (cli *grpcClient) EndBlockAsync(ctx context.Context, params types.RequestEndBlock) (*ReqRes, error) {
+func (cli *grpcClient) EndBlockAsync(params types.RequestEndBlock) *ReqRes {
 	req := types.ToRequestEndBlock(params)
-	res, err := cli.client.EndBlock(ctx, req.GetEndBlock(), grpc.WaitForReady(true))
+	res, err := cli.client.EndBlock(context.Background(), req.GetEndBlock(), grpc.WaitForReady(true))
 	if err != nil {
-		return nil, err
+		cli.StopForError(err)
 	}
-	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_EndBlock{EndBlock: res}})
+	return cli.finishAsyncCall(req, &types.Response{Value: &types.Response_EndBlock{EndBlock: res}})
 }
 
-// NOTE: call is synchronous, use ctx to break early if needed
-func (cli *grpcClient) ListSnapshotsAsync(ctx context.Context, params types.RequestListSnapshots) (*ReqRes, error) {
+func (cli *grpcClient) ListSnapshotsAsync(params types.RequestListSnapshots) *ReqRes {
 	req := types.ToRequestListSnapshots(params)
-	res, err := cli.client.ListSnapshots(ctx, req.GetListSnapshots(), grpc.WaitForReady(true))
+	res, err := cli.client.ListSnapshots(context.Background(), req.GetListSnapshots(), grpc.WaitForReady(true))
 	if err != nil {
-		return nil, err
+		cli.StopForError(err)
 	}
-	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_ListSnapshots{ListSnapshots: res}})
+	return cli.finishAsyncCall(req, &types.Response{Value: &types.Response_ListSnapshots{ListSnapshots: res}})
 }
 
-// NOTE: call is synchronous, use ctx to break early if needed
-func (cli *grpcClient) OfferSnapshotAsync(ctx context.Context, params types.RequestOfferSnapshot) (*ReqRes, error) {
+func (cli *grpcClient) OfferSnapshotAsync(params types.RequestOfferSnapshot) *ReqRes {
 	req := types.ToRequestOfferSnapshot(params)
-	res, err := cli.client.OfferSnapshot(ctx, req.GetOfferSnapshot(), grpc.WaitForReady(true))
+	res, err := cli.client.OfferSnapshot(context.Background(), req.GetOfferSnapshot(), grpc.WaitForReady(true))
 	if err != nil {
-		return nil, err
+		cli.StopForError(err)
 	}
-	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_OfferSnapshot{OfferSnapshot: res}})
+	return cli.finishAsyncCall(req, &types.Response{Value: &types.Response_OfferSnapshot{OfferSnapshot: res}})
 }
 
-// NOTE: call is synchronous, use ctx to break early if needed
-func (cli *grpcClient) LoadSnapshotChunkAsync(
-	ctx context.Context,
-	params types.RequestLoadSnapshotChunk,
-) (*ReqRes, error) {
+func (cli *grpcClient) LoadSnapshotChunkAsync(params types.RequestLoadSnapshotChunk) *ReqRes {
 	req := types.ToRequestLoadSnapshotChunk(params)
-	res, err := cli.client.LoadSnapshotChunk(ctx, req.GetLoadSnapshotChunk(), grpc.WaitForReady(true))
+	res, err := cli.client.LoadSnapshotChunk(context.Background(), req.GetLoadSnapshotChunk(), grpc.WaitForReady(true))
 	if err != nil {
-		return nil, err
+		cli.StopForError(err)
 	}
-	return cli.finishAsyncCall(ctx, req, &types.Response{Value: &types.Response_LoadSnapshotChunk{LoadSnapshotChunk: res}})
+	return cli.finishAsyncCall(req, &types.Response{Value: &types.Response_LoadSnapshotChunk{LoadSnapshotChunk: res}})
 }
 
-// NOTE: call is synchronous, use ctx to break early if needed
-func (cli *grpcClient) ApplySnapshotChunkAsync(
-	ctx context.Context,
-	params types.RequestApplySnapshotChunk,
-) (*ReqRes, error) {
+func (cli *grpcClient) ApplySnapshotChunkAsync(params types.RequestApplySnapshotChunk) *ReqRes {
 	req := types.ToRequestApplySnapshotChunk(params)
-	res, err := cli.client.ApplySnapshotChunk(ctx, req.GetApplySnapshotChunk(), grpc.WaitForReady(true))
+	res, err := cli.client.ApplySnapshotChunk(context.Background(), req.GetApplySnapshotChunk(), grpc.WaitForReady(true))
 	if err != nil {
-		return nil, err
+		cli.StopForError(err)
 	}
-	return cli.finishAsyncCall(
-		ctx,
-		req,
-		&types.Response{Value: &types.Response_ApplySnapshotChunk{ApplySnapshotChunk: res}},
-	)
+	return cli.finishAsyncCall(req, &types.Response{Value: &types.Response_ApplySnapshotChunk{ApplySnapshotChunk: res}})
+}
+
+func (cli *grpcClient) PrepareProposalAsync(params types.RequestPrepareProposal) *ReqRes {
+	req := types.ToRequestPrepareProposal(params)
+	res, err := cli.client.PrepareProposal(context.Background(), req.GetPrepareProposal(), grpc.WaitForReady(true))
+	if err != nil {
+		cli.StopForError(err)
+	}
+	return cli.finishAsyncCall(req, &types.Response{Value: &types.Response_PrepareProposal{PrepareProposal: res}})
+}
+
+func (cli *grpcClient) ProcessProposalAsync(params types.RequestProcessProposal) *ReqRes {
+	req := types.ToRequestProcessProposal(params)
+	res, err := cli.client.ProcessProposal(context.Background(), req.GetProcessProposal(), grpc.WaitForReady(true))
+	if err != nil {
+		cli.StopForError(err)
+	}
+
+	return cli.finishAsyncCall(req, &types.Response{Value: &types.Response_ProcessProposal{ProcessProposal: res}})
 }
 
 // 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) {
+func (cli *grpcClient) finishAsyncCall(req *types.Request, res *types.Response) *ReqRes {
 	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()
-	}
+	cli.chReqRes <- reqres // use channel for async responses, since they must be ordered
+	return reqres
 }
 
 // finishSyncCall waits for an async call to complete. It is necessary to call all
@@ -357,150 +349,87 @@ func (cli *grpcClient) finishSyncCall(reqres *ReqRes) *types.Response {
 
 //----------------------------------------
 
-func (cli *grpcClient) FlushSync(ctx context.Context) error {
-	return nil
+func (cli *grpcClient) FlushSync() error {
+	reqres := cli.FlushAsync()
+	cli.finishSyncCall(reqres).GetFlush()
+	return cli.Error()
 }
 
-func (cli *grpcClient) EchoSync(ctx context.Context, msg string) (*types.ResponseEcho, error) {
-	reqres, err := cli.EchoAsync(ctx, msg)
-	if err != nil {
-		return nil, err
-	}
+func (cli *grpcClient) EchoSync(msg string) (*types.ResponseEcho, error) {
+	reqres := cli.EchoAsync(msg)
+	// StopForError should already have been called if error is set
 	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
-	}
+func (cli *grpcClient) InfoSync(req types.RequestInfo) (*types.ResponseInfo, error) {
+	reqres := cli.InfoAsync(req)
 	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
-	}
+func (cli *grpcClient) DeliverTxSync(params types.RequestDeliverTx) (*types.ResponseDeliverTx, error) {
+	reqres := cli.DeliverTxAsync(params)
 	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
-	}
+func (cli *grpcClient) CheckTxSync(params types.RequestCheckTx) (*types.ResponseCheckTx, error) {
+	reqres := cli.CheckTxAsync(params)
 	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
-	}
+func (cli *grpcClient) QuerySync(req types.RequestQuery) (*types.ResponseQuery, error) {
+	reqres := cli.QueryAsync(req)
 	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
-	}
+func (cli *grpcClient) CommitSync() (*types.ResponseCommit, error) {
+	reqres := cli.CommitAsync()
 	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
-	}
+func (cli *grpcClient) InitChainSync(params types.RequestInitChain) (*types.ResponseInitChain, error) {
+	reqres := cli.InitChainAsync(params)
 	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
-	}
+func (cli *grpcClient) BeginBlockSync(params types.RequestBeginBlock) (*types.ResponseBeginBlock, error) {
+	reqres := cli.BeginBlockAsync(params)
 	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
-	}
+func (cli *grpcClient) EndBlockSync(params types.RequestEndBlock) (*types.ResponseEndBlock, error) {
+	reqres := cli.EndBlockAsync(params)
 	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
-	}
+func (cli *grpcClient) ListSnapshotsSync(params types.RequestListSnapshots) (*types.ResponseListSnapshots, error) {
+	reqres := cli.ListSnapshotsAsync(params)
 	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
-	}
+func (cli *grpcClient) OfferSnapshotSync(params types.RequestOfferSnapshot) (*types.ResponseOfferSnapshot, error) {
+	reqres := cli.OfferSnapshotAsync(params)
 	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
-	}
+	reqres := cli.LoadSnapshotChunkAsync(params)
 	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
-	}
+	reqres := cli.ApplySnapshotChunkAsync(params)
 	return cli.finishSyncCall(reqres).GetApplySnapshotChunk(), cli.Error()
 }
+
+func (cli *grpcClient) PrepareProposalSync(
+	params types.RequestPrepareProposal) (*types.ResponsePrepareProposal, error) {
+	reqres := cli.PrepareProposalAsync(params)
+	return cli.finishSyncCall(reqres).GetPrepareProposal(), cli.Error()
+}
+
+func (cli *grpcClient) ProcessProposalSync(params types.RequestProcessProposal) (*types.ResponseProcessProposal, error) {
+	reqres := cli.ProcessProposalAsync(params)
+	return cli.finishSyncCall(reqres).GetProcessProposal(), cli.Error()
+}

abci/client/local_client.go

@@ -1,13 +1,13 @@
 package abcicli
 
 import (
-	"context"
-
 	types "github.com/tendermint/tendermint/abci/types"
-	tmsync "github.com/tendermint/tendermint/internal/libs/sync"
 	"github.com/tendermint/tendermint/libs/service"
+	tmsync "github.com/tendermint/tendermint/libs/sync"
 )
 
+var _ Client = (*localClient)(nil)
+
 // NOTE: use defer to unlock mutex because Application might panic (e.g., in
 // case of malicious tx or query). It only makes sense for publicly exposed
 // methods like CheckTx (/broadcast_tx_* RPC endpoint) or Query (/abci_query
@@ -15,7 +15,7 @@ import (
 type localClient struct {
 	service.BaseService
 
-	mtx *tmsync.RWMutex
+	mtx *tmsync.Mutex
 	types.Application
 	Callback
 }
@@ -26,24 +26,22 @@ var _ Client = (*localClient)(nil)
 // methods of the given app.
 //
 // Both Async and Sync methods ignore the given context.Context parameter.
-func NewLocalClient(mtx *tmsync.RWMutex, app types.Application) Client {
+func NewLocalClient(mtx *tmsync.Mutex, app types.Application) Client {
 	if mtx == nil {
-		mtx = &tmsync.RWMutex{}
+		mtx = new(tmsync.Mutex)
 	}
-
 	cli := &localClient{
 		mtx:         mtx,
 		Application: app,
 	}
-
 	cli.BaseService = *service.NewBaseService(nil, "localClient", cli)
 	return cli
 }
 
 func (app *localClient) SetResponseCallback(cb Callback) {
 	app.mtx.Lock()
-	defer app.mtx.Unlock()
 	app.Callback = cb
+	app.mtx.Unlock()
 }
 
 // TODO: change types.Application to include Error()?
@@ -51,33 +49,33 @@ func (app *localClient) Error() error {
 	return nil
 }
 
-func (app *localClient) FlushAsync(ctx context.Context) (*ReqRes, error) {
+func (app *localClient) FlushAsync() *ReqRes {
 	// Do nothing
-	return newLocalReqRes(types.ToRequestFlush(), nil), nil
+	return newLocalReqRes(types.ToRequestFlush(), nil)
 }
 
-func (app *localClient) EchoAsync(ctx context.Context, msg string) (*ReqRes, error) {
+func (app *localClient) EchoAsync(msg string) *ReqRes {
 	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()
+func (app *localClient) InfoAsync(req types.RequestInfo) *ReqRes {
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
 
 	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) {
+func (app *localClient) DeliverTxAsync(params types.RequestDeliverTx) *ReqRes {
 	app.mtx.Lock()
 	defer app.mtx.Unlock()
 
@@ -85,10 +83,10 @@ func (app *localClient) DeliverTxAsync(ctx context.Context, params types.Request
 	return app.callback(
 		types.ToRequestDeliverTx(params),
 		types.ToResponseDeliverTx(res),
-	), nil
+	)
 }
 
-func (app *localClient) CheckTxAsync(ctx context.Context, req types.RequestCheckTx) (*ReqRes, error) {
+func (app *localClient) CheckTxAsync(req types.RequestCheckTx) *ReqRes {
 	app.mtx.Lock()
 	defer app.mtx.Unlock()
 
@@ -96,21 +94,21 @@ func (app *localClient) CheckTxAsync(ctx context.Context, req types.RequestCheck
 	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()
+func (app *localClient) QueryAsync(req types.RequestQuery) *ReqRes {
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
 
 	res := app.Application.Query(req)
 	return app.callback(
 		types.ToRequestQuery(req),
 		types.ToResponseQuery(res),
-	), nil
+	)
 }
 
-func (app *localClient) CommitAsync(ctx context.Context) (*ReqRes, error) {
+func (app *localClient) CommitAsync() *ReqRes {
 	app.mtx.Lock()
 	defer app.mtx.Unlock()
 
@@ -118,10 +116,10 @@ func (app *localClient) CommitAsync(ctx context.Context) (*ReqRes, error) {
 	return app.callback(
 		types.ToRequestCommit(),
 		types.ToResponseCommit(res),
-	), nil
+	)
 }
 
-func (app *localClient) InitChainAsync(ctx context.Context, req types.RequestInitChain) (*ReqRes, error) {
+func (app *localClient) InitChainAsync(req types.RequestInitChain) *ReqRes {
 	app.mtx.Lock()
 	defer app.mtx.Unlock()
 
@@ -129,10 +127,10 @@ func (app *localClient) InitChainAsync(ctx context.Context, req types.RequestIni
 	return app.callback(
 		types.ToRequestInitChain(req),
 		types.ToResponseInitChain(res),
-	), nil
+	)
 }
 
-func (app *localClient) BeginBlockAsync(ctx context.Context, req types.RequestBeginBlock) (*ReqRes, error) {
+func (app *localClient) BeginBlockAsync(req types.RequestBeginBlock) *ReqRes {
 	app.mtx.Lock()
 	defer app.mtx.Unlock()
 
@@ -140,10 +138,10 @@ func (app *localClient) BeginBlockAsync(ctx context.Context, req types.RequestBe
 	return app.callback(
 		types.ToRequestBeginBlock(req),
 		types.ToResponseBeginBlock(res),
-	), nil
+	)
 }
 
-func (app *localClient) EndBlockAsync(ctx context.Context, req types.RequestEndBlock) (*ReqRes, error) {
+func (app *localClient) EndBlockAsync(req types.RequestEndBlock) *ReqRes {
 	app.mtx.Lock()
 	defer app.mtx.Unlock()
 
@@ -151,10 +149,10 @@ func (app *localClient) EndBlockAsync(ctx context.Context, req types.RequestEndB
 	return app.callback(
 		types.ToRequestEndBlock(req),
 		types.ToResponseEndBlock(res),
-	), nil
+	)
 }
 
-func (app *localClient) ListSnapshotsAsync(ctx context.Context, req types.RequestListSnapshots) (*ReqRes, error) {
+func (app *localClient) ListSnapshotsAsync(req types.RequestListSnapshots) *ReqRes {
 	app.mtx.Lock()
 	defer app.mtx.Unlock()
 
@@ -162,10 +160,10 @@ func (app *localClient) ListSnapshotsAsync(ctx context.Context, req types.Reques
 	return app.callback(
 		types.ToRequestListSnapshots(req),
 		types.ToResponseListSnapshots(res),
-	), nil
+	)
 }
 
-func (app *localClient) OfferSnapshotAsync(ctx context.Context, req types.RequestOfferSnapshot) (*ReqRes, error) {
+func (app *localClient) OfferSnapshotAsync(req types.RequestOfferSnapshot) *ReqRes {
 	app.mtx.Lock()
 	defer app.mtx.Unlock()
 
@@ -173,13 +171,10 @@ func (app *localClient) OfferSnapshotAsync(ctx context.Context, req types.Reques
 	return app.callback(
 		types.ToRequestOfferSnapshot(req),
 		types.ToResponseOfferSnapshot(res),
-	), nil
+	)
 }
 
-func (app *localClient) LoadSnapshotChunkAsync(
-	ctx context.Context,
-	req types.RequestLoadSnapshotChunk,
-) (*ReqRes, error) {
+func (app *localClient) LoadSnapshotChunkAsync(req types.RequestLoadSnapshotChunk) *ReqRes {
 	app.mtx.Lock()
 	defer app.mtx.Unlock()
 
@@ -187,13 +182,10 @@ func (app *localClient) LoadSnapshotChunkAsync(
 	return app.callback(
 		types.ToRequestLoadSnapshotChunk(req),
 		types.ToResponseLoadSnapshotChunk(res),
-	), nil
+	)
 }
 
-func (app *localClient) ApplySnapshotChunkAsync(
-	ctx context.Context,
-	req types.RequestApplySnapshotChunk,
-) (*ReqRes, error) {
+func (app *localClient) ApplySnapshotChunkAsync(req types.RequestApplySnapshotChunk) *ReqRes {
 	app.mtx.Lock()
 	defer app.mtx.Unlock()
 
@@ -201,32 +193,50 @@ func (app *localClient) ApplySnapshotChunkAsync(
 	return app.callback(
 		types.ToRequestApplySnapshotChunk(req),
 		types.ToResponseApplySnapshotChunk(res),
-	), nil
+	)
+}
+
+func (app *localClient) PrepareProposalAsync(req types.RequestPrepareProposal) *ReqRes {
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
+	res := app.Application.PrepareProposal(req)
+	return app.callback(
+		types.ToRequestPrepareProposal(req),
+		types.ToResponsePrepareProposal(res),
+	)
+}
+
+func (app *localClient) ProcessProposalAsync(req types.RequestProcessProposal) *ReqRes {
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
+	res := app.Application.ProcessProposal(req)
+	return app.callback(
+		types.ToRequestProcessProposal(req),
+		types.ToResponseProcessProposal(res),
+	)
 }
 
 //-------------------------------------------------------
 
-func (app *localClient) FlushSync(ctx context.Context) error {
+func (app *localClient) FlushSync() error {
 	return nil
 }
 
-func (app *localClient) EchoSync(ctx context.Context, msg string) (*types.ResponseEcho, error) {
+func (app *localClient) EchoSync(msg string) (*types.ResponseEcho, error) {
 	return &types.ResponseEcho{Message: msg}, nil
 }
 
-func (app *localClient) InfoSync(ctx context.Context, req types.RequestInfo) (*types.ResponseInfo, error) {
-	app.mtx.RLock()
-	defer app.mtx.RUnlock()
+func (app *localClient) InfoSync(req types.RequestInfo) (*types.ResponseInfo, error) {
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
 
 	res := app.Application.Info(req)
 	return &res, nil
 }
 
-func (app *localClient) DeliverTxSync(
-	ctx context.Context,
-	req types.RequestDeliverTx,
-) (*types.ResponseDeliverTx, error) {
-
+func (app *localClient) DeliverTxSync(req types.RequestDeliverTx) (*types.ResponseDeliverTx, error) {
 	app.mtx.Lock()
 	defer app.mtx.Unlock()
 
@@ -234,10 +244,7 @@ func (app *localClient) DeliverTxSync(
 	return &res, nil
 }
 
-func (app *localClient) CheckTxSync(
-	ctx context.Context,
-	req types.RequestCheckTx,
-) (*types.ResponseCheckTx, error) {
+func (app *localClient) CheckTxSync(req types.RequestCheckTx) (*types.ResponseCheckTx, error) {
 	app.mtx.Lock()
 	defer app.mtx.Unlock()
 
@@ -245,18 +252,15 @@ func (app *localClient) CheckTxSync(
 	return &res, nil
 }
 
-func (app *localClient) QuerySync(
-	ctx context.Context,
-	req types.RequestQuery,
-) (*types.ResponseQuery, error) {
-	app.mtx.RLock()
-	defer app.mtx.RUnlock()
+func (app *localClient) QuerySync(req types.RequestQuery) (*types.ResponseQuery, error) {
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
 
 	res := app.Application.Query(req)
 	return &res, nil
 }
 
-func (app *localClient) CommitSync(ctx context.Context) (*types.ResponseCommit, error) {
+func (app *localClient) CommitSync() (*types.ResponseCommit, error) {
 	app.mtx.Lock()
 	defer app.mtx.Unlock()
 
@@ -264,11 +268,7 @@ func (app *localClient) CommitSync(ctx context.Context) (*types.ResponseCommit,
 	return &res, nil
 }
 
-func (app *localClient) InitChainSync(
-	ctx context.Context,
-	req types.RequestInitChain,
-) (*types.ResponseInitChain, error) {
-
+func (app *localClient) InitChainSync(req types.RequestInitChain) (*types.ResponseInitChain, error) {
 	app.mtx.Lock()
 	defer app.mtx.Unlock()
 
@@ -276,11 +276,7 @@ func (app *localClient) InitChainSync(
 	return &res, nil
 }
 
-func (app *localClient) BeginBlockSync(
-	ctx context.Context,
-	req types.RequestBeginBlock,
-) (*types.ResponseBeginBlock, error) {
-
+func (app *localClient) BeginBlockSync(req types.RequestBeginBlock) (*types.ResponseBeginBlock, error) {
 	app.mtx.Lock()
 	defer app.mtx.Unlock()
 
@@ -288,11 +284,7 @@ func (app *localClient) BeginBlockSync(
 	return &res, nil
 }
 
-func (app *localClient) EndBlockSync(
-	ctx context.Context,
-	req types.RequestEndBlock,
-) (*types.ResponseEndBlock, error) {
-
+func (app *localClient) EndBlockSync(req types.RequestEndBlock) (*types.ResponseEndBlock, error) {
 	app.mtx.Lock()
 	defer app.mtx.Unlock()
 
@@ -300,11 +292,7 @@ func (app *localClient) EndBlockSync(
 	return &res, nil
 }
 
-func (app *localClient) ListSnapshotsSync(
-	ctx context.Context,
-	req types.RequestListSnapshots,
-) (*types.ResponseListSnapshots, error) {
-
+func (app *localClient) ListSnapshotsSync(req types.RequestListSnapshots) (*types.ResponseListSnapshots, error) {
 	app.mtx.Lock()
 	defer app.mtx.Unlock()
 
@@ -312,11 +300,7 @@ func (app *localClient) ListSnapshotsSync(
 	return &res, nil
 }
 
-func (app *localClient) OfferSnapshotSync(
-	ctx context.Context,
-	req types.RequestOfferSnapshot,
-) (*types.ResponseOfferSnapshot, error) {
-
+func (app *localClient) OfferSnapshotSync(req types.RequestOfferSnapshot) (*types.ResponseOfferSnapshot, error) {
 	app.mtx.Lock()
 	defer app.mtx.Unlock()
 
@@ -325,9 +309,7 @@ func (app *localClient) OfferSnapshotSync(
 }
 
 func (app *localClient) LoadSnapshotChunkSync(
-	ctx context.Context,
 	req types.RequestLoadSnapshotChunk) (*types.ResponseLoadSnapshotChunk, error) {
-
 	app.mtx.Lock()
 	defer app.mtx.Unlock()
 
@@ -336,9 +318,7 @@ func (app *localClient) LoadSnapshotChunkSync(
 }
 
 func (app *localClient) ApplySnapshotChunkSync(
-	ctx context.Context,
 	req types.RequestApplySnapshotChunk) (*types.ResponseApplySnapshotChunk, error) {
-
 	app.mtx.Lock()
 	defer app.mtx.Unlock()
 
@@ -346,16 +326,33 @@ func (app *localClient) ApplySnapshotChunkSync(
 	return &res, nil
 }
 
+func (app *localClient) PrepareProposalSync(req types.RequestPrepareProposal) (*types.ResponsePrepareProposal, error) {
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
+	res := app.Application.PrepareProposal(req)
+	return &res, nil
+}
+
+func (app *localClient) ProcessProposalSync(req types.RequestProcessProposal) (*types.ResponseProcessProposal, error) {
+	app.mtx.Lock()
+	defer app.mtx.Unlock()
+
+	res := app.Application.ProcessProposal(req)
+	return &res, nil
+}
+
 //-------------------------------------------------------
 
 func (app *localClient) callback(req *types.Request, res *types.Response) *ReqRes {
 	app.Callback(req, res)
-	return newLocalReqRes(req, res)
+	rr := newLocalReqRes(req, res)
+	rr.callbackInvoked = true
+	return rr
 }
 
 func newLocalReqRes(req *types.Request, res *types.Response) *ReqRes {
 	reqRes := NewReqRes(req)
 	reqRes.Response = res
-	reqRes.SetDone()
 	return reqRes
 }

abci/client/mocks/client.go

@@ -3,10 +3,7 @@
 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"
@@ -19,36 +16,29 @@ type Client struct {
 	mock.Mock
 }
 
-// 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)
+// ApplySnapshotChunkAsync provides a mock function with given fields: _a0
+func (_m *Client) ApplySnapshotChunkAsync(_a0 types.RequestApplySnapshotChunk) *abcicli.ReqRes {
+	ret := _m.Called(_a0)
 
 	var r0 *abcicli.ReqRes
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestApplySnapshotChunk) *abcicli.ReqRes); ok {
-		r0 = rf(_a0, _a1)
+	if rf, ok := ret.Get(0).(func(types.RequestApplySnapshotChunk) *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, types.RequestApplySnapshotChunk) error); ok {
-		r1 = rf(_a0, _a1)
-	} else {
-		r1 = ret.Error(1)
-	}
-
-	return r0, r1
+	return r0
 }
 
-// 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)
+// ApplySnapshotChunkSync provides a mock function with given fields: _a0
+func (_m *Client) ApplySnapshotChunkSync(_a0 types.RequestApplySnapshotChunk) (*types.ResponseApplySnapshotChunk, error) {
+	ret := _m.Called(_a0)
 
 	var r0 *types.ResponseApplySnapshotChunk
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestApplySnapshotChunk) *types.ResponseApplySnapshotChunk); ok {
-		r0 = rf(_a0, _a1)
+	if rf, ok := ret.Get(0).(func(types.RequestApplySnapshotChunk) *types.ResponseApplySnapshotChunk); ok {
+		r0 = rf(_a0)
 	} else {
 		if ret.Get(0) != nil {
 			r0 = ret.Get(0).(*types.ResponseApplySnapshotChunk)
@@ -56,8 +46,8 @@ func (_m *Client) ApplySnapshotChunkSync(_a0 context.Context, _a1 types.RequestA
 	}
 
 	var r1 error
-	if rf, ok := ret.Get(1).(func(context.Context, types.RequestApplySnapshotChunk) error); ok {
-		r1 = rf(_a0, _a1)
+	if rf, ok := ret.Get(1).(func(types.RequestApplySnapshotChunk) error); ok {
+		r1 = rf(_a0)
 	} else {
 		r1 = ret.Error(1)
 	}
@@ -65,36 +55,29 @@ func (_m *Client) ApplySnapshotChunkSync(_a0 context.Context, _a1 types.RequestA
 	return r0, r1
 }
 
-// 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)
+// BeginBlockAsync provides a mock function with given fields: _a0
+func (_m *Client) BeginBlockAsync(_a0 types.RequestBeginBlock) *abcicli.ReqRes {
+	ret := _m.Called(_a0)
 
 	var r0 *abcicli.ReqRes
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestBeginBlock) *abcicli.ReqRes); ok {
-		r0 = rf(_a0, _a1)
+	if rf, ok := ret.Get(0).(func(types.RequestBeginBlock) *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, types.RequestBeginBlock) error); ok {
-		r1 = rf(_a0, _a1)
-	} else {
-		r1 = ret.Error(1)
-	}
-
-	return r0, r1
+	return r0
 }
 
-// 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)
+// BeginBlockSync provides a mock function with given fields: _a0
+func (_m *Client) BeginBlockSync(_a0 types.RequestBeginBlock) (*types.ResponseBeginBlock, error) {
+	ret := _m.Called(_a0)
 
 	var r0 *types.ResponseBeginBlock
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestBeginBlock) *types.ResponseBeginBlock); ok {
-		r0 = rf(_a0, _a1)
+	if rf, ok := ret.Get(0).(func(types.RequestBeginBlock) *types.ResponseBeginBlock); ok {
+		r0 = rf(_a0)
 	} else {
 		if ret.Get(0) != nil {
 			r0 = ret.Get(0).(*types.ResponseBeginBlock)
@@ -102,8 +85,8 @@ func (_m *Client) BeginBlockSync(_a0 context.Context, _a1 types.RequestBeginBloc
 	}
 
 	var r1 error
-	if rf, ok := ret.Get(1).(func(context.Context, types.RequestBeginBlock) error); ok {
-		r1 = rf(_a0, _a1)
+	if rf, ok := ret.Get(1).(func(types.RequestBeginBlock) error); ok {
+		r1 = rf(_a0)
 	} else {
 		r1 = ret.Error(1)
 	}
@@ -111,36 +94,29 @@ func (_m *Client) BeginBlockSync(_a0 context.Context, _a1 types.RequestBeginBloc
 	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)
+// CheckTxAsync provides a mock function with given fields: _a0
+func (_m *Client) CheckTxAsync(_a0 types.RequestCheckTx) *abcicli.ReqRes {
+	ret := _m.Called(_a0)
 
 	var r0 *abcicli.ReqRes
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestCheckTx) *abcicli.ReqRes); ok {
-		r0 = rf(_a0, _a1)
+	if rf, ok := ret.Get(0).(func(types.RequestCheckTx) *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, types.RequestCheckTx) error); ok {
-		r1 = rf(_a0, _a1)
-	} else {
-		r1 = ret.Error(1)
-	}
-
-	return r0, r1
+	return r0
 }
 
-// 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)
+// CheckTxSync provides a mock function with given fields: _a0
+func (_m *Client) CheckTxSync(_a0 types.RequestCheckTx) (*types.ResponseCheckTx, error) {
+	ret := _m.Called(_a0)
 
 	var r0 *types.ResponseCheckTx
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestCheckTx) *types.ResponseCheckTx); ok {
-		r0 = rf(_a0, _a1)
+	if rf, ok := ret.Get(0).(func(types.RequestCheckTx) *types.ResponseCheckTx); ok {
+		r0 = rf(_a0)
 	} else {
 		if ret.Get(0) != nil {
 			r0 = ret.Get(0).(*types.ResponseCheckTx)
@@ -148,30 +124,7 @@ func (_m *Client) CheckTxSync(_a0 context.Context, _a1 types.RequestCheckTx) (*t
 	}
 
 	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
-}
-
-// 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 {
+	if rf, ok := ret.Get(1).(func(types.RequestCheckTx) error); ok {
 		r1 = rf(_a0)
 	} else {
 		r1 = ret.Error(1)
@@ -180,13 +133,29 @@ func (_m *Client) CommitAsync(_a0 context.Context) (*abcicli.ReqRes, error) {
 	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)
+// CommitAsync provides a mock function with given fields:
+func (_m *Client) CommitAsync() *abcicli.ReqRes {
+	ret := _m.Called()
+
+	var r0 *abcicli.ReqRes
+	if rf, ok := ret.Get(0).(func() *abcicli.ReqRes); ok {
+		r0 = rf()
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*abcicli.ReqRes)
+		}
+	}
+
+	return r0
+}
+
+// CommitSync provides a mock function with given fields:
+func (_m *Client) CommitSync() (*types.ResponseCommit, error) {
+	ret := _m.Called()
 
 	var r0 *types.ResponseCommit
-	if rf, ok := ret.Get(0).(func(context.Context) *types.ResponseCommit); ok {
-		r0 = rf(_a0)
+	if rf, ok := ret.Get(0).(func() *types.ResponseCommit); ok {
+		r0 = rf()
 	} else {
 		if ret.Get(0) != nil {
 			r0 = ret.Get(0).(*types.ResponseCommit)
@@ -194,7 +163,46 @@ func (_m *Client) CommitSync(_a0 context.Context) (*types.ResponseCommit, error)
 	}
 
 	var r1 error
-	if rf, ok := ret.Get(1).(func(context.Context) error); ok {
+	if rf, ok := ret.Get(1).(func() error); ok {
+		r1 = rf()
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// DeliverTxAsync provides a mock function with given fields: _a0
+func (_m *Client) DeliverTxAsync(_a0 types.RequestDeliverTx) *abcicli.ReqRes {
+	ret := _m.Called(_a0)
+
+	var r0 *abcicli.ReqRes
+	if rf, ok := ret.Get(0).(func(types.RequestDeliverTx) *abcicli.ReqRes); ok {
+		r0 = rf(_a0)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*abcicli.ReqRes)
+		}
+	}
+
+	return r0
+}
+
+// DeliverTxSync provides a mock function with given fields: _a0
+func (_m *Client) DeliverTxSync(_a0 types.RequestDeliverTx) (*types.ResponseDeliverTx, error) {
+	ret := _m.Called(_a0)
+
+	var r0 *types.ResponseDeliverTx
+	if rf, ok := ret.Get(0).(func(types.RequestDeliverTx) *types.ResponseDeliverTx); ok {
+		r0 = rf(_a0)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*types.ResponseDeliverTx)
+		}
+	}
+
+	var r1 error
+	if rf, ok := ret.Get(1).(func(types.RequestDeliverTx) error); ok {
 		r1 = rf(_a0)
 	} else {
 		r1 = ret.Error(1)
@@ -203,82 +211,29 @@ func (_m *Client) CommitSync(_a0 context.Context) (*types.ResponseCommit, error)
 	return r0, r1
 }
 
-// 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)
+// EchoAsync provides a mock function with given fields: msg
+func (_m *Client) EchoAsync(msg string) *abcicli.ReqRes {
+	ret := _m.Called(msg)
 
 	var r0 *abcicli.ReqRes
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestDeliverTx) *abcicli.ReqRes); ok {
-		r0 = rf(_a0, _a1)
+	if rf, ok := ret.Get(0).(func(string) *abcicli.ReqRes); ok {
+		r0 = rf(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, types.RequestDeliverTx) error); ok {
-		r1 = rf(_a0, _a1)
-	} else {
-		r1 = ret.Error(1)
-	}
-
-	return r0, r1
+	return r0
 }
 
-// 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)
+// EchoSync provides a mock function with given fields: msg
+func (_m *Client) EchoSync(msg string) (*types.ResponseEcho, error) {
+	ret := _m.Called(msg)
 
 	var r0 *types.ResponseEcho
-	if rf, ok := ret.Get(0).(func(context.Context, string) *types.ResponseEcho); ok {
-		r0 = rf(ctx, msg)
+	if rf, ok := ret.Get(0).(func(string) *types.ResponseEcho); ok {
+		r0 = rf(msg)
 	} else {
 		if ret.Get(0) != nil {
 			r0 = ret.Get(0).(*types.ResponseEcho)
@@ -286,8 +241,8 @@ func (_m *Client) EchoSync(ctx context.Context, msg string) (*types.ResponseEcho
 	}
 
 	var r1 error
-	if rf, ok := ret.Get(1).(func(context.Context, string) error); ok {
-		r1 = rf(ctx, msg)
+	if rf, ok := ret.Get(1).(func(string) error); ok {
+		r1 = rf(msg)
 	} else {
 		r1 = ret.Error(1)
 	}
@@ -295,36 +250,29 @@ func (_m *Client) EchoSync(ctx context.Context, msg string) (*types.ResponseEcho
 	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)
+// EndBlockAsync provides a mock function with given fields: _a0
+func (_m *Client) EndBlockAsync(_a0 types.RequestEndBlock) *abcicli.ReqRes {
+	ret := _m.Called(_a0)
 
 	var r0 *abcicli.ReqRes
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestEndBlock) *abcicli.ReqRes); ok {
-		r0 = rf(_a0, _a1)
+	if rf, ok := ret.Get(0).(func(types.RequestEndBlock) *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, types.RequestEndBlock) error); ok {
-		r1 = rf(_a0, _a1)
-	} else {
-		r1 = ret.Error(1)
-	}
-
-	return r0, r1
+	return r0
 }
 
-// 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)
+// EndBlockSync provides a mock function with given fields: _a0
+func (_m *Client) EndBlockSync(_a0 types.RequestEndBlock) (*types.ResponseEndBlock, error) {
+	ret := _m.Called(_a0)
 
 	var r0 *types.ResponseEndBlock
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestEndBlock) *types.ResponseEndBlock); ok {
-		r0 = rf(_a0, _a1)
+	if rf, ok := ret.Get(0).(func(types.RequestEndBlock) *types.ResponseEndBlock); ok {
+		r0 = rf(_a0)
 	} else {
 		if ret.Get(0) != nil {
 			r0 = ret.Get(0).(*types.ResponseEndBlock)
@@ -332,8 +280,8 @@ func (_m *Client) EndBlockSync(_a0 context.Context, _a1 types.RequestEndBlock) (
 	}
 
 	var r1 error
-	if rf, ok := ret.Get(1).(func(context.Context, types.RequestEndBlock) error); ok {
-		r1 = rf(_a0, _a1)
+	if rf, ok := ret.Get(1).(func(types.RequestEndBlock) error); ok {
+		r1 = rf(_a0)
 	} else {
 		r1 = ret.Error(1)
 	}
@@ -355,12 +303,42 @@ func (_m *Client) Error() error {
 	return r0
 }
 
-// FlushAsync provides a mock function with given fields: _a0
-func (_m *Client) FlushAsync(_a0 context.Context) (*abcicli.ReqRes, error) {
+// FlushAsync provides a mock function with given fields:
+func (_m *Client) FlushAsync() *abcicli.ReqRes {
+	ret := _m.Called()
+
+	var r0 *abcicli.ReqRes
+	if rf, ok := ret.Get(0).(func() *abcicli.ReqRes); ok {
+		r0 = rf()
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*abcicli.ReqRes)
+		}
+	}
+
+	return r0
+}
+
+// FlushSync provides a mock function with given fields:
+func (_m *Client) FlushSync() 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
+}
+
+// InfoAsync provides a mock function with given fields: _a0
+func (_m *Client) InfoAsync(_a0 types.RequestInfo) *abcicli.ReqRes {
 	ret := _m.Called(_a0)
 
 	var r0 *abcicli.ReqRes
-	if rf, ok := ret.Get(0).(func(context.Context) *abcicli.ReqRes); ok {
+	if rf, ok := ret.Get(0).(func(types.RequestInfo) *abcicli.ReqRes); ok {
 		r0 = rf(_a0)
 	} else {
 		if ret.Get(0) != nil {
@@ -368,8 +346,24 @@ func (_m *Client) FlushAsync(_a0 context.Context) (*abcicli.ReqRes, error) {
 		}
 	}
 
+	return r0
+}
+
+// InfoSync provides a mock function with given fields: _a0
+func (_m *Client) InfoSync(_a0 types.RequestInfo) (*types.ResponseInfo, error) {
+	ret := _m.Called(_a0)
+
+	var r0 *types.ResponseInfo
+	if rf, ok := ret.Get(0).(func(types.RequestInfo) *types.ResponseInfo); ok {
+		r0 = rf(_a0)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*types.ResponseInfo)
+		}
+	}
+
 	var r1 error
-	if rf, ok := ret.Get(1).(func(context.Context) error); ok {
+	if rf, ok := ret.Get(1).(func(types.RequestInfo) error); ok {
 		r1 = rf(_a0)
 	} else {
 		r1 = ret.Error(1)
@@ -378,96 +372,29 @@ func (_m *Client) FlushAsync(_a0 context.Context) (*abcicli.ReqRes, error) {
 	return r0, r1
 }
 
-// FlushSync provides a mock function with given fields: _a0
-func (_m *Client) FlushSync(_a0 context.Context) error {
+// InitChainAsync provides a mock function with given fields: _a0
+func (_m *Client) InitChainAsync(_a0 types.RequestInitChain) *abcicli.ReqRes {
 	ret := _m.Called(_a0)
 
-	var r0 error
-	if rf, ok := ret.Get(0).(func(context.Context) error); ok {
+	var r0 *abcicli.ReqRes
+	if rf, ok := ret.Get(0).(func(types.RequestInitChain) *abcicli.ReqRes); ok {
 		r0 = rf(_a0)
 	} else {
-		r0 = ret.Error(0)
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*abcicli.ReqRes)
+		}
 	}
 
 	return r0
 }
 
-// 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
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestInfo) *types.ResponseInfo); ok {
-		r0 = rf(_a0, _a1)
-	} else {
-		if ret.Get(0) != nil {
-			r0 = ret.Get(0).(*types.ResponseInfo)
-		}
-	}
-
-	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
-}
-
-// 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)
+// InitChainSync provides a mock function with given fields: _a0
+func (_m *Client) InitChainSync(_a0 types.RequestInitChain) (*types.ResponseInitChain, error) {
+	ret := _m.Called(_a0)
 
 	var r0 *types.ResponseInitChain
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestInitChain) *types.ResponseInitChain); ok {
-		r0 = rf(_a0, _a1)
+	if rf, ok := ret.Get(0).(func(types.RequestInitChain) *types.ResponseInitChain); ok {
+		r0 = rf(_a0)
 	} else {
 		if ret.Get(0) != nil {
 			r0 = ret.Get(0).(*types.ResponseInitChain)
@@ -475,8 +402,8 @@ func (_m *Client) InitChainSync(_a0 context.Context, _a1 types.RequestInitChain)
 	}
 
 	var r1 error
-	if rf, ok := ret.Get(1).(func(context.Context, types.RequestInitChain) error); ok {
-		r1 = rf(_a0, _a1)
+	if rf, ok := ret.Get(1).(func(types.RequestInitChain) error); ok {
+		r1 = rf(_a0)
 	} else {
 		r1 = ret.Error(1)
 	}
@@ -498,36 +425,29 @@ func (_m *Client) IsRunning() bool {
 	return r0
 }
 
-// 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)
+// ListSnapshotsAsync provides a mock function with given fields: _a0
+func (_m *Client) ListSnapshotsAsync(_a0 types.RequestListSnapshots) *abcicli.ReqRes {
+	ret := _m.Called(_a0)
 
 	var r0 *abcicli.ReqRes
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestListSnapshots) *abcicli.ReqRes); ok {
-		r0 = rf(_a0, _a1)
+	if rf, ok := ret.Get(0).(func(types.RequestListSnapshots) *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, types.RequestListSnapshots) error); ok {
-		r1 = rf(_a0, _a1)
-	} else {
-		r1 = ret.Error(1)
-	}
-
-	return r0, r1
+	return r0
 }
 
-// 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)
+// ListSnapshotsSync provides a mock function with given fields: _a0
+func (_m *Client) ListSnapshotsSync(_a0 types.RequestListSnapshots) (*types.ResponseListSnapshots, error) {
+	ret := _m.Called(_a0)
 
 	var r0 *types.ResponseListSnapshots
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestListSnapshots) *types.ResponseListSnapshots); ok {
-		r0 = rf(_a0, _a1)
+	if rf, ok := ret.Get(0).(func(types.RequestListSnapshots) *types.ResponseListSnapshots); ok {
+		r0 = rf(_a0)
 	} else {
 		if ret.Get(0) != nil {
 			r0 = ret.Get(0).(*types.ResponseListSnapshots)
@@ -535,8 +455,8 @@ func (_m *Client) ListSnapshotsSync(_a0 context.Context, _a1 types.RequestListSn
 	}
 
 	var r1 error
-	if rf, ok := ret.Get(1).(func(context.Context, types.RequestListSnapshots) error); ok {
-		r1 = rf(_a0, _a1)
+	if rf, ok := ret.Get(1).(func(types.RequestListSnapshots) error); ok {
+		r1 = rf(_a0)
 	} else {
 		r1 = ret.Error(1)
 	}
@@ -544,36 +464,29 @@ func (_m *Client) ListSnapshotsSync(_a0 context.Context, _a1 types.RequestListSn
 	return r0, r1
 }
 
-// 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)
+// LoadSnapshotChunkAsync provides a mock function with given fields: _a0
+func (_m *Client) LoadSnapshotChunkAsync(_a0 types.RequestLoadSnapshotChunk) *abcicli.ReqRes {
+	ret := _m.Called(_a0)
 
 	var r0 *abcicli.ReqRes
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestLoadSnapshotChunk) *abcicli.ReqRes); ok {
-		r0 = rf(_a0, _a1)
+	if rf, ok := ret.Get(0).(func(types.RequestLoadSnapshotChunk) *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, types.RequestLoadSnapshotChunk) error); ok {
-		r1 = rf(_a0, _a1)
-	} else {
-		r1 = ret.Error(1)
-	}
-
-	return r0, r1
+	return r0
 }
 
-// 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)
+// LoadSnapshotChunkSync provides a mock function with given fields: _a0
+func (_m *Client) LoadSnapshotChunkSync(_a0 types.RequestLoadSnapshotChunk) (*types.ResponseLoadSnapshotChunk, error) {
+	ret := _m.Called(_a0)
 
 	var r0 *types.ResponseLoadSnapshotChunk
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestLoadSnapshotChunk) *types.ResponseLoadSnapshotChunk); ok {
-		r0 = rf(_a0, _a1)
+	if rf, ok := ret.Get(0).(func(types.RequestLoadSnapshotChunk) *types.ResponseLoadSnapshotChunk); ok {
+		r0 = rf(_a0)
 	} else {
 		if ret.Get(0) != nil {
 			r0 = ret.Get(0).(*types.ResponseLoadSnapshotChunk)
@@ -581,8 +494,8 @@ func (_m *Client) LoadSnapshotChunkSync(_a0 context.Context, _a1 types.RequestLo
 	}
 
 	var r1 error
-	if rf, ok := ret.Get(1).(func(context.Context, types.RequestLoadSnapshotChunk) error); ok {
-		r1 = rf(_a0, _a1)
+	if rf, ok := ret.Get(1).(func(types.RequestLoadSnapshotChunk) error); ok {
+		r1 = rf(_a0)
 	} else {
 		r1 = ret.Error(1)
 	}
@@ -590,36 +503,29 @@ func (_m *Client) LoadSnapshotChunkSync(_a0 context.Context, _a1 types.RequestLo
 	return r0, r1
 }
 
-// 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)
+// OfferSnapshotAsync provides a mock function with given fields: _a0
+func (_m *Client) OfferSnapshotAsync(_a0 types.RequestOfferSnapshot) *abcicli.ReqRes {
+	ret := _m.Called(_a0)
 
 	var r0 *abcicli.ReqRes
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestOfferSnapshot) *abcicli.ReqRes); ok {
-		r0 = rf(_a0, _a1)
+	if rf, ok := ret.Get(0).(func(types.RequestOfferSnapshot) *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, types.RequestOfferSnapshot) error); ok {
-		r1 = rf(_a0, _a1)
-	} else {
-		r1 = ret.Error(1)
-	}
-
-	return r0, r1
+	return r0
 }
 
-// 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)
+// OfferSnapshotSync provides a mock function with given fields: _a0
+func (_m *Client) OfferSnapshotSync(_a0 types.RequestOfferSnapshot) (*types.ResponseOfferSnapshot, error) {
+	ret := _m.Called(_a0)
 
 	var r0 *types.ResponseOfferSnapshot
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestOfferSnapshot) *types.ResponseOfferSnapshot); ok {
-		r0 = rf(_a0, _a1)
+	if rf, ok := ret.Get(0).(func(types.RequestOfferSnapshot) *types.ResponseOfferSnapshot); ok {
+		r0 = rf(_a0)
 	} else {
 		if ret.Get(0) != nil {
 			r0 = ret.Get(0).(*types.ResponseOfferSnapshot)
@@ -627,8 +533,8 @@ func (_m *Client) OfferSnapshotSync(_a0 context.Context, _a1 types.RequestOfferS
 	}
 
 	var r1 error
-	if rf, ok := ret.Get(1).(func(context.Context, types.RequestOfferSnapshot) error); ok {
-		r1 = rf(_a0, _a1)
+	if rf, ok := ret.Get(1).(func(types.RequestOfferSnapshot) error); ok {
+		r1 = rf(_a0)
 	} else {
 		r1 = ret.Error(1)
 	}
@@ -669,22 +575,38 @@ 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)
+// PrepareProposalAsync provides a mock function with given fields: _a0
+func (_m *Client) PrepareProposalAsync(_a0 types.RequestPrepareProposal) *abcicli.ReqRes {
+	ret := _m.Called(_a0)
 
 	var r0 *abcicli.ReqRes
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestQuery) *abcicli.ReqRes); ok {
-		r0 = rf(_a0, _a1)
+	if rf, ok := ret.Get(0).(func(types.RequestPrepareProposal) *abcicli.ReqRes); ok {
+		r0 = rf(_a0)
 	} else {
 		if ret.Get(0) != nil {
 			r0 = ret.Get(0).(*abcicli.ReqRes)
 		}
 	}
 
+	return r0
+}
+
+// PrepareProposalSync provides a mock function with given fields: _a0
+func (_m *Client) PrepareProposalSync(_a0 types.RequestPrepareProposal) (*types.ResponsePrepareProposal, error) {
+	ret := _m.Called(_a0)
+
+	var r0 *types.ResponsePrepareProposal
+	if rf, ok := ret.Get(0).(func(types.RequestPrepareProposal) *types.ResponsePrepareProposal); ok {
+		r0 = rf(_a0)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*types.ResponsePrepareProposal)
+		}
+	}
+
 	var r1 error
-	if rf, ok := ret.Get(1).(func(context.Context, types.RequestQuery) error); ok {
-		r1 = rf(_a0, _a1)
+	if rf, ok := ret.Get(1).(func(types.RequestPrepareProposal) error); ok {
+		r1 = rf(_a0)
 	} else {
 		r1 = ret.Error(1)
 	}
@@ -692,13 +614,68 @@ func (_m *Client) QueryAsync(_a0 context.Context, _a1 types.RequestQuery) (*abci
 	return r0, r1
 }
 
-// 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)
+// ProcessProposalAsync provides a mock function with given fields: _a0
+func (_m *Client) ProcessProposalAsync(_a0 types.RequestProcessProposal) *abcicli.ReqRes {
+	ret := _m.Called(_a0)
+
+	var r0 *abcicli.ReqRes
+	if rf, ok := ret.Get(0).(func(types.RequestProcessProposal) *abcicli.ReqRes); ok {
+		r0 = rf(_a0)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*abcicli.ReqRes)
+		}
+	}
+
+	return r0
+}
+
+// ProcessProposalSync provides a mock function with given fields: _a0
+func (_m *Client) ProcessProposalSync(_a0 types.RequestProcessProposal) (*types.ResponseProcessProposal, error) {
+	ret := _m.Called(_a0)
+
+	var r0 *types.ResponseProcessProposal
+	if rf, ok := ret.Get(0).(func(types.RequestProcessProposal) *types.ResponseProcessProposal); ok {
+		r0 = rf(_a0)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*types.ResponseProcessProposal)
+		}
+	}
+
+	var r1 error
+	if rf, ok := ret.Get(1).(func(types.RequestProcessProposal) error); ok {
+		r1 = rf(_a0)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// QueryAsync provides a mock function with given fields: _a0
+func (_m *Client) QueryAsync(_a0 types.RequestQuery) *abcicli.ReqRes {
+	ret := _m.Called(_a0)
+
+	var r0 *abcicli.ReqRes
+	if rf, ok := ret.Get(0).(func(types.RequestQuery) *abcicli.ReqRes); ok {
+		r0 = rf(_a0)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*abcicli.ReqRes)
+		}
+	}
+
+	return r0
+}
+
+// QuerySync provides a mock function with given fields: _a0
+func (_m *Client) QuerySync(_a0 types.RequestQuery) (*types.ResponseQuery, error) {
+	ret := _m.Called(_a0)
 
 	var r0 *types.ResponseQuery
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestQuery) *types.ResponseQuery); ok {
-		r0 = rf(_a0, _a1)
+	if rf, ok := ret.Get(0).(func(types.RequestQuery) *types.ResponseQuery); ok {
+		r0 = rf(_a0)
 	} else {
 		if ret.Get(0) != nil {
 			r0 = ret.Get(0).(*types.ResponseQuery)
@@ -706,8 +683,8 @@ func (_m *Client) QuerySync(_a0 context.Context, _a1 types.RequestQuery) (*types
 	}
 
 	var r1 error
-	if rf, ok := ret.Get(1).(func(context.Context, types.RequestQuery) error); ok {
-		r1 = rf(_a0, _a1)
+	if rf, ok := ret.Get(1).(func(types.RequestQuery) error); ok {
+		r1 = rf(_a0)
 	} else {
 		r1 = ret.Error(1)
 	}
@@ -797,7 +774,17 @@ func (_m *Client) String() string {
 	return r0
 }
 
-// Wait provides a mock function with given fields:
-func (_m *Client) Wait() {
-	_m.Called()
+type mockConstructorTestingTNewClient interface {
+	mock.TestingT
+	Cleanup(func())
+}
+
+// NewClient creates a new instance of Client. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
+func NewClient(t mockConstructorTestingTNewClient) *Client {
+	mock := &Client{}
+	mock.Mock.Test(t)
+
+	t.Cleanup(func() { mock.AssertExpectations(t) })
+
+	return mock
 }

abci/client/socket_client.go

@@ -3,7 +3,6 @@ package abcicli
 import (
 	"bufio"
 	"container/list"
-	"context"
 	"errors"
 	"fmt"
 	"io"
@@ -12,25 +11,17 @@ import (
 	"time"
 
 	"github.com/tendermint/tendermint/abci/types"
-	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"
+	tmsync "github.com/tendermint/tendermint/libs/sync"
+	"github.com/tendermint/tendermint/libs/timer"
 )
 
 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
+	reqQueueSize    = 256 // TODO make configurable
+	flushThrottleMS = 20  // Don't wait longer than...
 )
 
-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 {
@@ -40,10 +31,10 @@ type socketClient struct {
 	mustConnect bool
 	conn        net.Conn
 
-	reqQueue   chan *reqResWithContext
+	reqQueue   chan *ReqRes
 	flushTimer *timer.ThrottleTimer
 
-	mtx     tmsync.RWMutex
+	mtx     tmsync.Mutex
 	err     error
 	reqSent *list.List                            // list of requests sent, waiting for response
 	resCb   func(*types.Request, *types.Response) // called on all requests, if set.
@@ -56,7 +47,7 @@ var _ Client = (*socketClient)(nil)
 // if it fails to connect.
 func NewSocketClient(addr string, mustConnect bool) Client {
 	cli := &socketClient{
-		reqQueue:    make(chan *reqResWithContext, reqQueueSize),
+		reqQueue:    make(chan *ReqRes, reqQueueSize),
 		flushTimer:  timer.NewThrottleTimer("socketClient", flushThrottleMS),
 		mustConnect: mustConnect,
 
@@ -108,8 +99,8 @@ func (cli *socketClient) OnStop() {
 
 // Error returns an error if the client was stopped abruptly.
 func (cli *socketClient) Error() error {
-	cli.mtx.RLock()
-	defer cli.mtx.RUnlock()
+	cli.mtx.Lock()
+	defer cli.mtx.Unlock()
 	return cli.err
 }
 
@@ -119,8 +110,8 @@ func (cli *socketClient) Error() error {
 // NOTE: callback may get internally generated flush responses.
 func (cli *socketClient) SetResponseCallback(resCb Callback) {
 	cli.mtx.Lock()
-	defer cli.mtx.Unlock()
 	cli.resCb = resCb
+	cli.mtx.Unlock()
 }
 
 //----------------------------------------
@@ -132,20 +123,15 @@ func (cli *socketClient) sendRequestsRoutine(conn io.Writer) {
 		case reqres := <-cli.reqQueue:
 			// 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.R)
-			err := types.WriteMessage(reqres.R.Request, w)
+			cli.willSendReq(reqres)
+			err := types.WriteMessage(reqres.Request, w)
 			if err != nil {
 				cli.stopForError(fmt.Errorf("write to buffer: %w", err))
 				return
 			}
 
 			// If it's a flush request, flush the current buffer.
-			if _, ok := reqres.R.Request.Value.(*types.Request_Flush); ok {
+			if _, ok := reqres.Request.Value.(*types.Request_Flush); ok {
 				err = w.Flush()
 				if err != nil {
 					cli.stopForError(fmt.Errorf("flush buffer: %w", err))
@@ -154,7 +140,7 @@ func (cli *socketClient) sendRequestsRoutine(conn io.Writer) {
 			}
 		case <-cli.flushTimer.Ch: // flush queue
 			select {
-			case cli.reqQueue <- &reqResWithContext{R: NewReqRes(types.ToRequestFlush()), C: context.Background()}:
+			case cli.reqQueue <- NewReqRes(types.ToRequestFlush()):
 			default:
 				// Probably will fill the buffer, or retry later.
 			}
@@ -233,264 +219,224 @@ func (cli *socketClient) didRecvResponse(res *types.Response) error {
 
 //----------------------------------------
 
-func (cli *socketClient) EchoAsync(ctx context.Context, msg string) (*ReqRes, error) {
-	return cli.queueRequestAsync(ctx, types.ToRequestEcho(msg))
+func (cli *socketClient) EchoAsync(msg string) *ReqRes {
+	return cli.queueRequest(types.ToRequestEcho(msg))
 }
 
-func (cli *socketClient) FlushAsync(ctx context.Context) (*ReqRes, error) {
-	return cli.queueRequestAsync(ctx, types.ToRequestFlush())
+func (cli *socketClient) FlushAsync() *ReqRes {
+	return cli.queueRequest(types.ToRequestFlush())
 }
 
-func (cli *socketClient) InfoAsync(ctx context.Context, req types.RequestInfo) (*ReqRes, error) {
-	return cli.queueRequestAsync(ctx, types.ToRequestInfo(req))
+func (cli *socketClient) InfoAsync(req types.RequestInfo) *ReqRes {
+	return cli.queueRequest(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) DeliverTxAsync(req types.RequestDeliverTx) *ReqRes {
+	return cli.queueRequest(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) CheckTxAsync(req types.RequestCheckTx) *ReqRes {
+	return cli.queueRequest(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) QueryAsync(req types.RequestQuery) *ReqRes {
+	return cli.queueRequest(types.ToRequestQuery(req))
 }
 
-func (cli *socketClient) CommitAsync(ctx context.Context) (*ReqRes, error) {
-	return cli.queueRequestAsync(ctx, types.ToRequestCommit())
+func (cli *socketClient) CommitAsync() *ReqRes {
+	return cli.queueRequest(types.ToRequestCommit())
 }
 
-func (cli *socketClient) InitChainAsync(ctx context.Context, req types.RequestInitChain) (*ReqRes, error) {
-	return cli.queueRequestAsync(ctx, types.ToRequestInitChain(req))
+func (cli *socketClient) InitChainAsync(req types.RequestInitChain) *ReqRes {
+	return cli.queueRequest(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) BeginBlockAsync(req types.RequestBeginBlock) *ReqRes {
+	return cli.queueRequest(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) EndBlockAsync(req types.RequestEndBlock) *ReqRes {
+	return cli.queueRequest(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) ListSnapshotsAsync(req types.RequestListSnapshots) *ReqRes {
+	return cli.queueRequest(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) OfferSnapshotAsync(req types.RequestOfferSnapshot) *ReqRes {
+	return cli.queueRequest(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) LoadSnapshotChunkAsync(req types.RequestLoadSnapshotChunk) *ReqRes {
+	return cli.queueRequest(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) ApplySnapshotChunkAsync(req types.RequestApplySnapshotChunk) *ReqRes {
+	return cli.queueRequest(types.ToRequestApplySnapshotChunk(req))
+}
+
+func (cli *socketClient) PrepareProposalAsync(req types.RequestPrepareProposal) *ReqRes {
+	return cli.queueRequest(types.ToRequestPrepareProposal(req))
+}
+
+func (cli *socketClient) ProcessProposalAsync(req types.RequestProcessProposal) *ReqRes {
+	return cli.queueRequest(types.ToRequestProcessProposal(req))
 }
 
 //----------------------------------------
 
-func (cli *socketClient) FlushSync(ctx context.Context) error {
-	reqRes, err := cli.queueRequest(ctx, types.ToRequestFlush(), true)
-	if err != nil {
-		return queueErr(err)
-	}
-
+func (cli *socketClient) FlushSync() error {
+	reqRes := cli.queueRequest(types.ToRequestFlush())
 	if err := cli.Error(); err != nil {
 		return err
 	}
-
-	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()
-	}
+	reqRes.Wait() // NOTE: if we don't flush the queue, its possible to get stuck here
+	return cli.Error()
 }
 
-func (cli *socketClient) EchoSync(ctx context.Context, msg string) (*types.ResponseEcho, error) {
-	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestEcho(msg))
-	if err != nil {
+func (cli *socketClient) EchoSync(msg string) (*types.ResponseEcho, error) {
+	reqres := cli.queueRequest(types.ToRequestEcho(msg))
+	if err := cli.FlushSync(); err != nil {
 		return nil, err
 	}
-	return reqres.Response.GetEcho(), nil
+
+	return reqres.Response.GetEcho(), cli.Error()
 }
 
-func (cli *socketClient) InfoSync(
-	ctx context.Context,
-	req types.RequestInfo,
-) (*types.ResponseInfo, error) {
-	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestInfo(req))
-	if err != nil {
+func (cli *socketClient) InfoSync(req types.RequestInfo) (*types.ResponseInfo, error) {
+	reqres := cli.queueRequest(types.ToRequestInfo(req))
+	if err := cli.FlushSync(); err != nil {
 		return nil, err
 	}
-	return reqres.Response.GetInfo(), nil
+
+	return reqres.Response.GetInfo(), cli.Error()
 }
 
-func (cli *socketClient) DeliverTxSync(
-	ctx context.Context,
-	req types.RequestDeliverTx,
-) (*types.ResponseDeliverTx, error) {
-
-	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestDeliverTx(req))
-	if err != nil {
+func (cli *socketClient) DeliverTxSync(req types.RequestDeliverTx) (*types.ResponseDeliverTx, error) {
+	reqres := cli.queueRequest(types.ToRequestDeliverTx(req))
+	if err := cli.FlushSync(); err != nil {
 		return nil, err
 	}
-	return reqres.Response.GetDeliverTx(), nil
+
+	return reqres.Response.GetDeliverTx(), cli.Error()
 }
 
-func (cli *socketClient) CheckTxSync(
-	ctx context.Context,
-	req types.RequestCheckTx,
-) (*types.ResponseCheckTx, error) {
-	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestCheckTx(req))
-	if err != nil {
+func (cli *socketClient) CheckTxSync(req types.RequestCheckTx) (*types.ResponseCheckTx, error) {
+	reqres := cli.queueRequest(types.ToRequestCheckTx(req))
+	if err := cli.FlushSync(); err != nil {
 		return nil, err
 	}
-	return reqres.Response.GetCheckTx(), nil
+
+	return reqres.Response.GetCheckTx(), cli.Error()
 }
 
-func (cli *socketClient) QuerySync(
-	ctx context.Context,
-	req types.RequestQuery,
-) (*types.ResponseQuery, error) {
-	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestQuery(req))
-	if err != nil {
+func (cli *socketClient) QuerySync(req types.RequestQuery) (*types.ResponseQuery, error) {
+	reqres := cli.queueRequest(types.ToRequestQuery(req))
+	if err := cli.FlushSync(); err != nil {
 		return nil, err
 	}
-	return reqres.Response.GetQuery(), nil
+
+	return reqres.Response.GetQuery(), cli.Error()
 }
 
-func (cli *socketClient) CommitSync(ctx context.Context) (*types.ResponseCommit, error) {
-	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestCommit())
-	if err != nil {
+func (cli *socketClient) CommitSync() (*types.ResponseCommit, error) {
+	reqres := cli.queueRequest(types.ToRequestCommit())
+	if err := cli.FlushSync(); err != nil {
 		return nil, err
 	}
-	return reqres.Response.GetCommit(), nil
+
+	return reqres.Response.GetCommit(), cli.Error()
 }
 
-func (cli *socketClient) InitChainSync(
-	ctx context.Context,
-	req types.RequestInitChain,
-) (*types.ResponseInitChain, error) {
-
-	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestInitChain(req))
-	if err != nil {
+func (cli *socketClient) InitChainSync(req types.RequestInitChain) (*types.ResponseInitChain, error) {
+	reqres := cli.queueRequest(types.ToRequestInitChain(req))
+	if err := cli.FlushSync(); err != nil {
 		return nil, err
 	}
-	return reqres.Response.GetInitChain(), nil
+
+	return reqres.Response.GetInitChain(), cli.Error()
 }
 
-func (cli *socketClient) BeginBlockSync(
-	ctx context.Context,
-	req types.RequestBeginBlock,
-) (*types.ResponseBeginBlock, error) {
-
-	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestBeginBlock(req))
-	if err != nil {
+func (cli *socketClient) BeginBlockSync(req types.RequestBeginBlock) (*types.ResponseBeginBlock, error) {
+	reqres := cli.queueRequest(types.ToRequestBeginBlock(req))
+	if err := cli.FlushSync(); err != nil {
 		return nil, err
 	}
-	return reqres.Response.GetBeginBlock(), nil
+
+	return reqres.Response.GetBeginBlock(), cli.Error()
 }
 
-func (cli *socketClient) EndBlockSync(
-	ctx context.Context,
-	req types.RequestEndBlock,
-) (*types.ResponseEndBlock, error) {
-
-	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestEndBlock(req))
-	if err != nil {
+func (cli *socketClient) EndBlockSync(req types.RequestEndBlock) (*types.ResponseEndBlock, error) {
+	reqres := cli.queueRequest(types.ToRequestEndBlock(req))
+	if err := cli.FlushSync(); err != nil {
 		return nil, err
 	}
-	return reqres.Response.GetEndBlock(), nil
+
+	return reqres.Response.GetEndBlock(), cli.Error()
 }
 
-func (cli *socketClient) ListSnapshotsSync(
-	ctx context.Context,
-	req types.RequestListSnapshots,
-) (*types.ResponseListSnapshots, error) {
-
-	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestListSnapshots(req))
-	if err != nil {
+func (cli *socketClient) ListSnapshotsSync(req types.RequestListSnapshots) (*types.ResponseListSnapshots, error) {
+	reqres := cli.queueRequest(types.ToRequestListSnapshots(req))
+	if err := cli.FlushSync(); err != nil {
 		return nil, err
 	}
-	return reqres.Response.GetListSnapshots(), nil
+
+	return reqres.Response.GetListSnapshots(), cli.Error()
 }
 
-func (cli *socketClient) OfferSnapshotSync(
-	ctx context.Context,
-	req types.RequestOfferSnapshot,
-) (*types.ResponseOfferSnapshot, error) {
-
-	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestOfferSnapshot(req))
-	if err != nil {
+func (cli *socketClient) OfferSnapshotSync(req types.RequestOfferSnapshot) (*types.ResponseOfferSnapshot, error) {
+	reqres := cli.queueRequest(types.ToRequestOfferSnapshot(req))
+	if err := cli.FlushSync(); err != nil {
 		return nil, err
 	}
-	return reqres.Response.GetOfferSnapshot(), nil
+
+	return reqres.Response.GetOfferSnapshot(), cli.Error()
 }
 
 func (cli *socketClient) LoadSnapshotChunkSync(
-	ctx context.Context,
 	req types.RequestLoadSnapshotChunk) (*types.ResponseLoadSnapshotChunk, error) {
-
-	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestLoadSnapshotChunk(req))
-	if err != nil {
+	reqres := cli.queueRequest(types.ToRequestLoadSnapshotChunk(req))
+	if err := cli.FlushSync(); err != nil {
 		return nil, err
 	}
-	return reqres.Response.GetLoadSnapshotChunk(), nil
+
+	return reqres.Response.GetLoadSnapshotChunk(), cli.Error()
 }
 
 func (cli *socketClient) ApplySnapshotChunkSync(
-	ctx context.Context,
 	req types.RequestApplySnapshotChunk) (*types.ResponseApplySnapshotChunk, error) {
-
-	reqres, err := cli.queueRequestAndFlushSync(ctx, types.ToRequestApplySnapshotChunk(req))
-	if err != nil {
+	reqres := cli.queueRequest(types.ToRequestApplySnapshotChunk(req))
+	if err := cli.FlushSync(); err != nil {
 		return nil, err
 	}
-	return reqres.Response.GetApplySnapshotChunk(), nil
+	return reqres.Response.GetApplySnapshotChunk(), cli.Error()
+}
+
+func (cli *socketClient) PrepareProposalSync(req types.RequestPrepareProposal) (*types.ResponsePrepareProposal, error) {
+	reqres := cli.queueRequest(types.ToRequestPrepareProposal(req))
+	if err := cli.FlushSync(); err != nil {
+		return nil, err
+	}
+
+	return reqres.Response.GetPrepareProposal(), cli.Error()
+}
+
+func (cli *socketClient) ProcessProposalSync(req types.RequestProcessProposal) (*types.ResponseProcessProposal, error) {
+	reqres := cli.queueRequest(types.ToRequestProcessProposal(req))
+	if err := cli.FlushSync(); err != nil {
+		return nil, err
+	}
+
+	return reqres.Response.GetProcessProposal(), cli.Error()
 }
 
 //----------------------------------------
 
-// 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) {
+func (cli *socketClient) queueRequest(req *types.Request) *ReqRes {
 	reqres := NewReqRes(req)
 
-	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")
-		}
-	}
+	// TODO: set cli.err if reqQueue times out
+	cli.reqQueue <- reqres
 
 	// Maybe auto-flush, or unset auto-flush
 	switch req.Value.(type) {
@@ -500,41 +446,7 @@ func (cli *socketClient) queueRequest(ctx context.Context, req *types.Request, s
 		cli.flushTimer.Set()
 	}
 
-	return reqres, nil
-}
-
-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)
+	return reqres
 }
 
 func (cli *socketClient) flushQueue() {
@@ -552,7 +464,7 @@ LOOP:
 	for {
 		select {
 		case reqres := <-cli.reqQueue:
-			reqres.R.Done()
+			reqres.Done()
 		default:
 			break LOOP
 		}
@@ -591,6 +503,10 @@ 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_PrepareProposal:
+		_, ok = res.Value.(*types.Response_PrepareProposal)
+	case *types.Request_ProcessProposal:
+		_, ok = res.Value.(*types.Response_ProcessProposal)
 	}
 	return ok
 }
@@ -601,10 +517,12 @@ func (cli *socketClient) stopForError(err error) {
 	}
 
 	cli.mtx.Lock()
-	cli.err = err
+	if cli.err == nil {
+		cli.err = err
+	}
 	cli.mtx.Unlock()
 
-	cli.Logger.Info("Stopping abci.socketClient", "reason", err)
+	cli.Logger.Error(fmt.Sprintf("Stopping abci.socketClient for error: %v", err.Error()))
 	if err := cli.Stop(); err != nil {
 		cli.Logger.Error("Error stopping abci.socketClient", "err", err)
 	}

abci/client/socket_client_test.go

@@ -1,24 +1,21 @@
 package abcicli_test
 
 import (
-	"context"
 	"fmt"
+	"sync"
 	"testing"
 	"time"
 
-	"math/rand"
-
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
 	abcicli "github.com/tendermint/tendermint/abci/client"
 	"github.com/tendermint/tendermint/abci/server"
 	"github.com/tendermint/tendermint/abci/types"
+	tmrand "github.com/tendermint/tendermint/libs/rand"
 	"github.com/tendermint/tendermint/libs/service"
 )
 
-var ctx = context.Background()
-
 func TestProperSyncCalls(t *testing.T) {
 	app := slowApp{}
 
@@ -37,12 +34,11 @@ func TestProperSyncCalls(t *testing.T) {
 	resp := make(chan error, 1)
 	go func() {
 		// This is BeginBlockSync unrolled....
-		reqres, err := c.BeginBlockAsync(ctx, types.RequestBeginBlock{})
-		assert.NoError(t, err)
-		err = c.FlushSync(context.Background())
-		assert.NoError(t, err)
+		reqres := c.BeginBlockAsync(types.RequestBeginBlock{})
+		err := c.FlushSync()
+		require.NoError(t, err)
 		res := reqres.Response.GetBeginBlock()
-		assert.NotNil(t, res)
+		require.NotNil(t, res)
 		resp <- c.Error()
 	}()
 
@@ -73,16 +69,14 @@ func TestHangingSyncCalls(t *testing.T) {
 	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)
+		reqres := c.BeginBlockAsync(types.RequestBeginBlock{})
+		flush := c.FlushAsync()
 		// 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)
+		err := s.Stop()
+		require.NoError(t, err)
 
 		// wait for the response from BeginBlock
 		reqres.Wait()
@@ -102,7 +96,7 @@ func TestHangingSyncCalls(t *testing.T) {
 func setupClientServer(t *testing.T, app types.Application) (
 	service.Service, abcicli.Client) {
 	// some port between 20k and 30k
-	port := 20000 + rand.Int31()%10000
+	port := 20000 + tmrand.Int32()%10000
 	addr := fmt.Sprintf("localhost:%d", port)
 
 	s, err := server.NewServer(addr, "socket", app)
@@ -125,3 +119,71 @@ func (slowApp) BeginBlock(req types.RequestBeginBlock) types.ResponseBeginBlock
 	time.Sleep(200 * time.Millisecond)
 	return types.ResponseBeginBlock{}
 }
+
+// TestCallbackInvokedWhenSetLaet ensures that the callback is invoked when
+// set after the client completes the call into the app. Currently this
+// test relies on the callback being allowed to be invoked twice if set multiple
+// times, once when set early and once when set late.
+func TestCallbackInvokedWhenSetLate(t *testing.T) {
+	wg := &sync.WaitGroup{}
+	wg.Add(1)
+	app := blockedABCIApplication{
+		wg: wg,
+	}
+	_, c := setupClientServer(t, app)
+	reqRes := c.CheckTxAsync(types.RequestCheckTx{})
+
+	done := make(chan struct{})
+	cb := func(_ *types.Response) {
+		close(done)
+	}
+	reqRes.SetCallback(cb)
+	app.wg.Done()
+	<-done
+
+	var called bool
+	cb = func(_ *types.Response) {
+		called = true
+	}
+	reqRes.SetCallback(cb)
+	require.True(t, called)
+}
+
+type blockedABCIApplication struct {
+	wg *sync.WaitGroup
+	types.BaseApplication
+}
+
+func (b blockedABCIApplication) CheckTx(r types.RequestCheckTx) types.ResponseCheckTx {
+	b.wg.Wait()
+	return b.BaseApplication.CheckTx(r)
+}
+
+// TestCallbackInvokedWhenSetEarly ensures that the callback is invoked when
+// set before the client completes the call into the app.
+func TestCallbackInvokedWhenSetEarly(t *testing.T) {
+	wg := &sync.WaitGroup{}
+	wg.Add(1)
+	app := blockedABCIApplication{
+		wg: wg,
+	}
+	_, c := setupClientServer(t, app)
+	reqRes := c.CheckTxAsync(types.RequestCheckTx{})
+
+	done := make(chan struct{})
+	cb := func(_ *types.Response) {
+		close(done)
+	}
+	reqRes.SetCallback(cb)
+	app.wg.Done()
+
+	called := func() bool {
+		select {
+		case <-done:
+			return true
+		default:
+			return false
+		}
+	}
+	require.Eventually(t, called, time.Second, time.Millisecond*25)
+}

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

@@ -2,7 +2,6 @@ package main
 
 import (
 	"bufio"
-	"context"
 	"encoding/hex"
 	"errors"
 	"fmt"
@@ -29,8 +28,6 @@ import (
 var (
 	client abcicli.Client
 	logger log.Logger
-
-	ctx = context.Background()
 )
 
 // flags
@@ -62,9 +59,12 @@ var RootCmd = &cobra.Command{
 		}
 
 		if logger == nil {
-			logger = log.MustNewDefaultLogger(log.LogFormatPlain, log.LogLevelInfo, false)
+			allowLevel, err := log.AllowLevel(flagLogLevel)
+			if err != nil {
+				return err
+			}
+			logger = log.NewFilter(log.NewTMLogger(log.NewSyncWriter(os.Stdout)), allowLevel)
 		}
-
 		if client == nil {
 			var err error
 			client, err = abcicli.NewClient(flagAddress, flagAbci, false)
@@ -83,10 +83,11 @@ var RootCmd = &cobra.Command{
 // Structure for data passed to print response.
 type response struct {
 	// generic abci response
-	Data []byte
-	Code uint32
-	Info string
-	Log  string
+	Data   []byte
+	Code   uint32
+	Info   string
+	Log    string
+	Status int32
 
 	Query *queryResponse
 }
@@ -143,6 +144,8 @@ func addCommands() {
 	RootCmd.AddCommand(commitCmd)
 	RootCmd.AddCommand(versionCmd)
 	RootCmd.AddCommand(testCmd)
+	RootCmd.AddCommand(prepareProposalCmd)
+	RootCmd.AddCommand(processProposalCmd)
 	addQueryFlags()
 	RootCmd.AddCommand(queryCmd)
 
@@ -184,7 +187,7 @@ This command opens an interactive console for running any of the other commands
 without opening a new connection each time
 `,
 	Args:      cobra.ExactArgs(0),
-	ValidArgs: []string{"echo", "info", "deliver_tx", "check_tx", "commit", "query"},
+	ValidArgs: []string{"echo", "info", "deliver_tx", "check_tx", "prepare_proposal", "process_proposal", "commit", "query"},
 	RunE:      cmdConsole,
 }
 
@@ -238,6 +241,22 @@ var versionCmd = &cobra.Command{
 	},
 }
 
+var prepareProposalCmd = &cobra.Command{
+	Use:   "prepare_proposal",
+	Short: "prepare proposal",
+	Long:  "prepare proposal",
+	Args:  cobra.MinimumNArgs(0),
+	RunE:  cmdPrepareProposal,
+}
+
+var processProposalCmd = &cobra.Command{
+	Use:   "process_proposal",
+	Short: "process proposal",
+	Long:  "process proposal",
+	Args:  cobra.MinimumNArgs(0),
+	RunE:  cmdProcessProposal,
+}
+
 var queryCmd = &cobra.Command{
 	Use:   "query",
 	Short: "query the application state",
@@ -309,6 +328,16 @@ func cmdTest(cmd *cobra.Command, args []string) error {
 				return servertest.DeliverTx(client, []byte{0x00, 0x00, 0x06}, code.CodeTypeBadNonce, nil)
 			},
 			func() error { return servertest.Commit(client, []byte{0, 0, 0, 0, 0, 0, 0, 5}) },
+			func() error {
+				return servertest.PrepareProposal(client, [][]byte{
+					{0x01},
+				}, [][]byte{{0x01}}, nil)
+			},
+			func() error {
+				return servertest.ProcessProposal(client, [][]byte{
+					{0x01},
+				}, types.ResponseProcessProposal_ACCEPT)
+			},
 		})
 }
 
@@ -409,6 +438,10 @@ func muxOnCommands(cmd *cobra.Command, pArgs []string) error {
 		return cmdInfo(cmd, actualArgs)
 	case "query":
 		return cmdQuery(cmd, actualArgs)
+	case "prepare_proposal":
+		return cmdPrepareProposal(cmd, actualArgs)
+	case "process_proposal":
+		return cmdProcessProposal(cmd, actualArgs)
 	default:
 		return cmdUnimplemented(cmd, pArgs)
 	}
@@ -427,11 +460,14 @@ func cmdUnimplemented(cmd *cobra.Command, args []string) error {
 
 	fmt.Println("Available commands:")
 	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.Printf("%s: %s\n", deliverTxCmd.Use, deliverTxCmd.Short)
+	fmt.Printf("%s: %s\n", infoCmd.Use, infoCmd.Short)
+	fmt.Printf("%s: %s\n", queryCmd.Use, queryCmd.Short)
+	fmt.Printf("%s: %s\n", prepareProposalCmd.Use, prepareProposalCmd.Short)
+	fmt.Printf("%s: %s\n", processProposalCmd.Use, processProposalCmd.Short)
+
 	fmt.Println("Use \"[command] --help\" for more information about a command.")
 
 	return nil
@@ -443,7 +479,7 @@ func cmdEcho(cmd *cobra.Command, args []string) error {
 	if len(args) > 0 {
 		msg = args[0]
 	}
-	res, err := client.EchoSync(ctx, msg)
+	res, err := client.EchoSync(msg)
 	if err != nil {
 		return err
 	}
@@ -459,7 +495,7 @@ func cmdInfo(cmd *cobra.Command, args []string) error {
 	if len(args) == 1 {
 		version = args[0]
 	}
-	res, err := client.InfoSync(ctx, types.RequestInfo{Version: version})
+	res, err := client.InfoSync(types.RequestInfo{Version: version})
 	if err != nil {
 		return err
 	}
@@ -484,7 +520,7 @@ func cmdDeliverTx(cmd *cobra.Command, args []string) error {
 	if err != nil {
 		return err
 	}
-	res, err := client.DeliverTxSync(ctx, types.RequestDeliverTx{Tx: txBytes})
+	res, err := client.DeliverTxSync(types.RequestDeliverTx{Tx: txBytes})
 	if err != nil {
 		return err
 	}
@@ -510,7 +546,7 @@ func cmdCheckTx(cmd *cobra.Command, args []string) error {
 	if err != nil {
 		return err
 	}
-	res, err := client.CheckTxSync(ctx, types.RequestCheckTx{Tx: txBytes})
+	res, err := client.CheckTxSync(types.RequestCheckTx{Tx: txBytes})
 	if err != nil {
 		return err
 	}
@@ -525,7 +561,7 @@ func cmdCheckTx(cmd *cobra.Command, args []string) error {
 
 // Get application Merkle root hash
 func cmdCommit(cmd *cobra.Command, args []string) error {
-	res, err := client.CommitSync(ctx)
+	res, err := client.CommitSync()
 	if err != nil {
 		return err
 	}
@@ -550,7 +586,7 @@ func cmdQuery(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	resQuery, err := client.QuerySync(ctx, types.RequestQuery{
+	resQuery, err := client.QuerySync(types.RequestQuery{
 		Data:   queryBytes,
 		Path:   flagPath,
 		Height: int64(flagHeight),
@@ -573,17 +609,75 @@ func cmdQuery(cmd *cobra.Command, args []string) error {
 	return nil
 }
 
+func cmdPrepareProposal(cmd *cobra.Command, args []string) error {
+	txsBytesArray := make([][]byte, len(args))
+
+	for i, arg := range args {
+		txBytes, err := stringOrHexToBytes(arg)
+		if err != nil {
+			return err
+		}
+		txsBytesArray[i] = txBytes
+	}
+
+	res, err := client.PrepareProposalSync(types.RequestPrepareProposal{
+		Txs: txsBytesArray,
+		// kvstore has to have this parameter in order not to reject a tx as the default value is 0
+		MaxTxBytes: 65536,
+	})
+	if err != nil {
+		return err
+	}
+	resps := make([]response, 0, len(res.Txs))
+	for _, tx := range res.Txs {
+		resps = append(resps, response{
+			Code: code.CodeTypeOK,
+			Log:  "Succeeded. Tx: " + string(tx),
+		})
+	}
+
+	printResponse(cmd, args, resps...)
+	return nil
+}
+
+func cmdProcessProposal(cmd *cobra.Command, args []string) error {
+	txsBytesArray := make([][]byte, len(args))
+
+	for i, arg := range args {
+		txBytes, err := stringOrHexToBytes(arg)
+		if err != nil {
+			return err
+		}
+		txsBytesArray[i] = txBytes
+	}
+
+	res, err := client.ProcessProposalSync(types.RequestProcessProposal{
+		Txs: txsBytesArray,
+	})
+	if err != nil {
+		return err
+	}
+
+	printResponse(cmd, args, response{
+		Status: int32(res.Status),
+	})
+	return nil
+}
+
 func cmdKVStore(cmd *cobra.Command, args []string) error {
-	logger := log.MustNewDefaultLogger(log.LogFormatPlain, log.LogLevelInfo, false)
+	logger := log.NewTMLogger(log.NewSyncWriter(os.Stdout))
 
 	// 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"))
+		var err error
+		flagPersist, err = os.MkdirTemp("", "persistent_kvstore_tmp")
+		if err != nil {
+			return err
+		}
 	}
+	app = kvstore.NewPersistentKVStoreApplication(flagPersist)
+	app.(*kvstore.PersistentKVStoreApplication).SetLogger(logger.With("module", "kvstore"))
 
 	// Start the listener
 	srv, err := server.NewServer(flagAddress, flagAbci, app)
@@ -609,44 +703,49 @@ func cmdKVStore(cmd *cobra.Command, args []string) error {
 
 //--------------------------------------------------------------------------------
 
-func printResponse(cmd *cobra.Command, args []string, rsp response) {
+func printResponse(cmd *cobra.Command, args []string, rsps ...response) {
 
 	if flagVerbose {
 		fmt.Println(">", cmd.Use, strings.Join(args, " "))
 	}
 
-	// Always print the status code.
-	if rsp.Code == types.CodeTypeOK {
-		fmt.Printf("-> code: OK\n")
-	} else {
-		fmt.Printf("-> code: %d\n", rsp.Code)
+	for _, rsp := range rsps {
+		// Always print the status code.
+		if rsp.Code == types.CodeTypeOK {
+			fmt.Printf("-> code: OK\n")
+		} else {
+			fmt.Printf("-> code: %d\n", rsp.Code)
 
-	}
+		}
 
-	if len(rsp.Data) != 0 {
-		// Do no print this line when using the commit command
-		// because the string comes out as gibberish
-		if cmd.Use != "commit" {
-			fmt.Printf("-> data: %s\n", rsp.Data)
+		if len(rsp.Data) != 0 {
+			// Do no print this line when using the commit command
+			// because the string comes out as gibberish
+			if cmd.Use != "commit" {
+				fmt.Printf("-> data: %s\n", rsp.Data)
+			}
+			fmt.Printf("-> data.hex: 0x%X\n", rsp.Data)
+		}
+		if rsp.Log != "" {
+			fmt.Printf("-> log: %s\n", rsp.Log)
+		}
+		if cmd.Use == "process_proposal" {
+			fmt.Printf("-> status: %s\n", types.ResponseProcessProposal_ProposalStatus_name[rsp.Status])
 		}
-		fmt.Printf("-> data.hex: 0x%X\n", rsp.Data)
-	}
-	if rsp.Log != "" {
-		fmt.Printf("-> log: %s\n", rsp.Log)
-	}
 
-	if rsp.Query != nil {
-		fmt.Printf("-> height: %d\n", rsp.Query.Height)
-		if rsp.Query.Key != nil {
-			fmt.Printf("-> key: %s\n", rsp.Query.Key)
-			fmt.Printf("-> key.hex: %X\n", rsp.Query.Key)
-		}
-		if rsp.Query.Value != nil {
-			fmt.Printf("-> value: %s\n", rsp.Query.Value)
-			fmt.Printf("-> value.hex: %X\n", rsp.Query.Value)
-		}
-		if rsp.Query.ProofOps != nil {
-			fmt.Printf("-> proof: %#v\n", rsp.Query.ProofOps)
+		if rsp.Query != nil {
+			fmt.Printf("-> height: %d\n", rsp.Query.Height)
+			if rsp.Query.Key != nil {
+				fmt.Printf("-> key: %s\n", rsp.Query.Key)
+				fmt.Printf("-> key.hex: %X\n", rsp.Query.Key)
+			}
+			if rsp.Query.Value != nil {
+				fmt.Printf("-> value: %s\n", rsp.Query.Value)
+				fmt.Printf("-> value.hex: %X\n", rsp.Query.Value)
+			}
+			if rsp.Query.ProofOps != nil {
+				fmt.Printf("-> proof: %#v\n", rsp.Query.ProofOps)
+			}
 		}
 	}
 }

abci/example/code/code.go

@@ -7,4 +7,6 @@ const (
 	CodeTypeBadNonce      uint32 = 2
 	CodeTypeUnauthorized  uint32 = 3
 	CodeTypeUnknownError  uint32 = 4
+	CodeTypeExecuted      uint32 = 5
+	CodeTypeRejected      uint32 = 6
 )

abci/example/example_test.go

@@ -1,7 +1,6 @@
 package example
 
 import (
-	"context"
 	"fmt"
 	"math/rand"
 	"net"
@@ -14,6 +13,8 @@ import (
 
 	"google.golang.org/grpc"
 
+	"golang.org/x/net/context"
+
 	"github.com/tendermint/tendermint/libs/log"
 	tmnet "github.com/tendermint/tendermint/libs/net"
 
@@ -44,7 +45,7 @@ func TestGRPC(t *testing.T) {
 }
 
 func testStream(t *testing.T, app types.Application) {
-	const numDeliverTxs = 20000
+	numDeliverTxs := 20000
 	socketFile := fmt.Sprintf("test-%08x.sock", rand.Int31n(1<<30))
 	defer os.Remove(socketFile)
 	socket := fmt.Sprintf("unix://%v", socketFile)
@@ -52,8 +53,9 @@ func testStream(t *testing.T, app types.Application) {
 	// Start the listener
 	server := abciserver.NewSocketServer(socket, app)
 	server.SetLogger(log.TestingLogger().With("module", "abci-server"))
-	err := server.Start()
-	require.NoError(t, err)
+	if err := server.Start(); err != nil {
+		require.NoError(t, err, "Error starting socket server")
+	}
 	t.Cleanup(func() {
 		if err := server.Stop(); err != nil {
 			t.Error(err)
@@ -63,8 +65,9 @@ func testStream(t *testing.T, app types.Application) {
 	// Connect to the socket
 	client := abcicli.NewSocketClient(socket, false)
 	client.SetLogger(log.TestingLogger().With("module", "abci-client"))
-	err = client.Start()
-	require.NoError(t, err)
+	if err := client.Start(); err != nil {
+		t.Fatalf("Error starting socket client: %v", err.Error())
+	}
 	t.Cleanup(func() {
 		if err := client.Stop(); err != nil {
 			t.Error(err)
@@ -98,24 +101,22 @@ func testStream(t *testing.T, app types.Application) {
 		}
 	})
 
-	ctx := context.Background()
-
 	// Write requests
 	for counter := 0; counter < numDeliverTxs; counter++ {
 		// Send request
-		_, err = client.DeliverTxAsync(ctx, types.RequestDeliverTx{Tx: []byte("test")})
-		require.NoError(t, err)
+		reqRes := client.DeliverTxAsync(types.RequestDeliverTx{Tx: []byte("test")})
+		_ = reqRes
+		// check err ?
 
 		// Sometimes send flush messages
-		if counter%128 == 0 {
-			err = client.FlushSync(context.Background())
-			require.NoError(t, err)
+		if counter%123 == 0 {
+			client.FlushAsync()
+			// check err ?
 		}
 	}
 
 	// Send final flush message
-	_, err = client.FlushAsync(ctx)
-	require.NoError(t, err)
+	client.FlushAsync()
 
 	<-done
 }
@@ -129,7 +130,7 @@ func dialerFunc(ctx context.Context, addr string) (net.Conn, error) {
 
 func testGRPCSync(t *testing.T, app types.ABCIApplicationServer) {
 	numDeliverTxs := 2000
-	socketFile := fmt.Sprintf("test-%08x.sock", rand.Int31n(1<<30))
+	socketFile := fmt.Sprintf("/tmp/test-%08x.sock", rand.Int31n(1<<30))
 	defer os.Remove(socketFile)
 	socket := fmt.Sprintf("unix://%v", socketFile)
 
@@ -147,6 +148,7 @@ func testGRPCSync(t *testing.T, app types.ABCIApplicationServer) {
 	})
 
 	// Connect to the socket
+	//nolint:staticcheck // SA1019 Existing use of deprecated but supported dial option.
 	conn, err := grpc.Dial(socket, grpc.WithInsecure(), grpc.WithContextDialer(dialerFunc))
 	if err != nil {
 		t.Fatalf("Error dialing GRPC server: %v", err.Error())

abci/example/kvstore/helpers.go

@@ -1,8 +1,6 @@
 package kvstore
 
 import (
-	mrand "math/rand"
-
 	"github.com/tendermint/tendermint/abci/types"
 	tmrand "github.com/tendermint/tendermint/libs/rand"
 )
@@ -11,8 +9,7 @@ import (
 // from the input value
 func RandVal(i int) types.ValidatorUpdate {
 	pubkey := tmrand.Bytes(32)
-	// Random value between [0, 2^16 - 1]
-	power := mrand.Uint32() & (1<<16 - 1) // nolint:gosec // G404: Use of weak random number generator
+	power := tmrand.Uint16() + 1
 	v := types.UpdateValidator(pubkey, int64(power), "")
 	return v
 }

abci/example/kvstore/kvstore.go

@@ -68,6 +68,7 @@ type Application struct {
 
 	state        State
 	RetainBlocks int64 // blocks to retain after commit (via ResponseCommit.RetainHeight)
+	txToRemove   map[string]struct{}
 }
 
 func NewApplication() *Application {
@@ -87,6 +88,9 @@ func (app *Application) Info(req types.RequestInfo) (resInfo types.ResponseInfo)
 
 // tx is either "key=value" or just arbitrary bytes
 func (app *Application) DeliverTx(req types.RequestDeliverTx) types.ResponseDeliverTx {
+	if isReplacedTx(req.Tx) {
+		app.txToRemove[string(req.Tx)] = struct{}{}
+	}
 	var key, value string
 
 	parts := bytes.Split(req.Tx, []byte("="))
@@ -118,6 +122,15 @@ func (app *Application) DeliverTx(req types.RequestDeliverTx) types.ResponseDeli
 }
 
 func (app *Application) CheckTx(req types.RequestCheckTx) types.ResponseCheckTx {
+	if len(req.Tx) == 0 {
+		return types.ResponseCheckTx{Code: code.CodeTypeRejected}
+	}
+
+	if req.Type == types.CheckTxType_Recheck {
+		if _, ok := app.txToRemove[string(req.Tx)]; ok {
+			return types.ResponseCheckTx{Code: code.CodeTypeExecuted, GasWanted: 1}
+		}
+	}
 	return types.ResponseCheckTx{Code: code.CodeTypeOK, GasWanted: 1}
 }
 
@@ -127,6 +140,8 @@ func (app *Application) Commit() types.ResponseCommit {
 	binary.PutVarint(appHash, app.state.Size)
 	app.state.AppHash = appHash
 	app.state.Height++
+
+	// empty out the set of transactions to remove via rechecktx
 	saveState(app.state)
 
 	resp := types.ResponseCommit{Data: appHash}
@@ -171,3 +186,18 @@ func (app *Application) Query(reqQuery types.RequestQuery) (resQuery types.Respo
 
 	return resQuery
 }
+
+func (app *Application) BeginBlock(req types.RequestBeginBlock) types.ResponseBeginBlock {
+	app.txToRemove = map[string]struct{}{}
+	return types.ResponseBeginBlock{}
+}
+
+func (app *Application) ProcessProposal(
+	req types.RequestProcessProposal) types.ResponseProcessProposal {
+	for _, tx := range req.Txs {
+		if len(tx) == 0 {
+			return types.ResponseProcessProposal{Status: types.ResponseProcessProposal_REJECT}
+		}
+	}
+	return types.ResponseProcessProposal{Status: types.ResponseProcessProposal_ACCEPT}
+}

abci/example/kvstore/kvstore_test.go

@@ -1,9 +1,8 @@
 package kvstore
 
 import (
-	"context"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"sort"
 	"testing"
 
@@ -24,8 +23,6 @@ const (
 	testValue = "def"
 )
 
-var ctx = context.Background()
-
 func testKVStore(t *testing.T, app types.Application, tx []byte, key, value string) {
 	req := types.RequestDeliverTx{Tx: tx}
 	ar := app.DeliverTx(req)
@@ -73,8 +70,26 @@ func TestKVStoreKV(t *testing.T) {
 	testKVStore(t, kvstore, tx, key, value)
 }
 
+func TestPersistentKVStoreEmptyTX(t *testing.T) {
+	dir, err := os.MkdirTemp("/tmp", "abci-kvstore-test") // TODO
+	if err != nil {
+		t.Fatal(err)
+	}
+	kvstore := NewPersistentKVStoreApplication(dir)
+	tx := []byte("")
+	reqCheck := types.RequestCheckTx{Tx: tx}
+	resCheck := kvstore.CheckTx(reqCheck)
+	require.Equal(t, resCheck.Code, code.CodeTypeRejected)
+
+	txs := make([][]byte, 0, 4)
+	txs = append(txs, []byte("key=value"), []byte("key"), []byte(""), []byte("kee=value"))
+	reqPrepare := types.RequestPrepareProposal{Txs: txs, MaxTxBytes: 10 * 1024}
+	resPrepare := kvstore.PrepareProposal(reqPrepare)
+	require.Equal(t, len(reqPrepare.Txs), len(resPrepare.Txs)+1, "Empty transaction not properly removed")
+}
+
 func TestPersistentKVStoreKV(t *testing.T) {
-	dir, err := ioutil.TempDir("/tmp", "abci-kvstore-test") // TODO
+	dir, err := os.MkdirTemp("/tmp", "abci-kvstore-test") // TODO
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -90,7 +105,7 @@ func TestPersistentKVStoreKV(t *testing.T) {
 }
 
 func TestPersistentKVStoreInfo(t *testing.T) {
-	dir, err := ioutil.TempDir("/tmp", "abci-kvstore-test") // TODO
+	dir, err := os.MkdirTemp("/tmp", "abci-kvstore-test") // TODO
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -122,7 +137,7 @@ func TestPersistentKVStoreInfo(t *testing.T) {
 
 // add a validator, remove a validator, update a validator
 func TestValUpdates(t *testing.T) {
-	dir, err := ioutil.TempDir("/tmp", "abci-kvstore-test") // TODO
+	dir, err := os.MkdirTemp("/tmp", "abci-kvstore-test") // TODO
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -165,7 +180,7 @@ func TestValUpdates(t *testing.T) {
 
 	makeApplyBlock(t, kvstore, 2, diff, tx1, tx2, tx3)
 
-	vals1 = append(vals[:nInit-2], vals[nInit+1]) // nolint: gocritic
+	vals1 = append(vals[:nInit-2], vals[nInit+1]) //nolint: gocritic
 	vals2 = kvstore.Validators()
 	valsEqual(t, vals1, vals2)
 
@@ -296,7 +311,7 @@ func TestClientServer(t *testing.T) {
 
 	// set up grpc app
 	kvstore = NewApplication()
-	gclient, gserver, err := makeGRPCClientServer(kvstore, "kvstore-grpc")
+	gclient, gserver, err := makeGRPCClientServer(kvstore, "/tmp/kvstore-grpc")
 	require.NoError(t, err)
 
 	t.Cleanup(func() {
@@ -326,23 +341,23 @@ func runClientTests(t *testing.T, client abcicli.Client) {
 }
 
 func testClient(t *testing.T, app abcicli.Client, tx []byte, key, value string) {
-	ar, err := app.DeliverTxSync(ctx, types.RequestDeliverTx{Tx: tx})
+	ar, err := app.DeliverTxSync(types.RequestDeliverTx{Tx: tx})
 	require.NoError(t, err)
 	require.False(t, ar.IsErr(), ar)
 	// repeating tx doesn't raise error
-	ar, err = app.DeliverTxSync(ctx, types.RequestDeliverTx{Tx: tx})
+	ar, err = app.DeliverTxSync(types.RequestDeliverTx{Tx: tx})
 	require.NoError(t, err)
 	require.False(t, ar.IsErr(), ar)
 	// commit
-	_, err = app.CommitSync(ctx)
+	_, err = app.CommitSync()
 	require.NoError(t, err)
 
-	info, err := app.InfoSync(ctx, types.RequestInfo{})
+	info, err := app.InfoSync(types.RequestInfo{})
 	require.NoError(t, err)
 	require.NotZero(t, info.LastBlockHeight)
 
 	// make sure query is fine
-	resQuery, err := app.QuerySync(ctx, types.RequestQuery{
+	resQuery, err := app.QuerySync(types.RequestQuery{
 		Path: "/store",
 		Data: []byte(key),
 	})
@@ -353,7 +368,7 @@ func testClient(t *testing.T, app abcicli.Client, tx []byte, key, value string)
 	require.EqualValues(t, info.LastBlockHeight, resQuery.Height)
 
 	// make sure proof is fine
-	resQuery, err = app.QuerySync(ctx, types.RequestQuery{
+	resQuery, err = app.QuerySync(types.RequestQuery{
 		Path:  "/store",
 		Data:  []byte(key),
 		Prove: true,

abci/example/kvstore/persistent_kvstore.go

@@ -45,16 +45,15 @@ func NewPersistentKVStoreApplication(dbDir string) *PersistentKVStoreApplication
 	state := loadState(db)
 
 	return &PersistentKVStoreApplication{
-		app:                &Application{state: state},
+		app: &Application{
+			state:      state,
+			txToRemove: map[string]struct{}{},
+		},
 		valAddrToPubKeyMap: make(map[string]pc.PublicKey),
 		logger:             log.NewNopLogger(),
 	}
 }
 
-func (app *PersistentKVStoreApplication) Close() error {
-	return app.app.state.db.Close()
-}
-
 func (app *PersistentKVStoreApplication) SetLogger(l log.Logger) {
 	app.logger = l
 }
@@ -76,6 +75,10 @@ func (app *PersistentKVStoreApplication) DeliverTx(req types.RequestDeliverTx) t
 		return app.execValidatorTx(req.Tx)
 	}
 
+	if isPrepareTx(req.Tx) {
+		return app.execPrepareTx(req.Tx)
+	}
+
 	// otherwise, update the key-value store
 	return app.app.DeliverTx(req)
 }
@@ -126,7 +129,7 @@ func (app *PersistentKVStoreApplication) BeginBlock(req types.RequestBeginBlock)
 
 	// Punish validators who committed equivocation.
 	for _, ev := range req.ByzantineValidators {
-		if ev.Type == types.EvidenceType_DUPLICATE_VOTE {
+		if ev.Type == types.MisbehaviorType_DUPLICATE_VOTE {
 			addr := string(ev.Validator.Address)
 			if pubKey, ok := app.valAddrToPubKeyMap[addr]; ok {
 				app.updateValidator(types.ValidatorUpdate{
@@ -142,7 +145,7 @@ func (app *PersistentKVStoreApplication) BeginBlock(req types.RequestBeginBlock)
 		}
 	}
 
-	return types.ResponseBeginBlock{}
+	return app.app.BeginBlock(req)
 }
 
 // Update the validator set
@@ -170,6 +173,21 @@ func (app *PersistentKVStoreApplication) ApplySnapshotChunk(
 	return types.ResponseApplySnapshotChunk{Result: types.ResponseApplySnapshotChunk_ABORT}
 }
 
+func (app *PersistentKVStoreApplication) PrepareProposal(
+	req types.RequestPrepareProposal) types.ResponsePrepareProposal {
+	return types.ResponsePrepareProposal{Txs: app.substPrepareTx(req.Txs, req.MaxTxBytes)}
+}
+
+func (app *PersistentKVStoreApplication) ProcessProposal(
+	req types.RequestProcessProposal) types.ResponseProcessProposal {
+	for _, tx := range req.Txs {
+		if len(tx) == 0 || isPrepareTx(tx) {
+			return types.ResponseProcessProposal{Status: types.ResponseProcessProposal_REJECT}
+		}
+	}
+	return types.ResponseProcessProposal{Status: types.ResponseProcessProposal_ACCEPT}
+}
+
 //---------------------------------------------
 // update validators
 
@@ -284,3 +302,46 @@ func (app *PersistentKVStoreApplication) updateValidator(v types.ValidatorUpdate
 
 	return types.ResponseDeliverTx{Code: code.CodeTypeOK}
 }
+
+// -----------------------------
+
+const (
+	PreparePrefix = "prepare"
+	ReplacePrefix = "replace"
+)
+
+func isPrepareTx(tx []byte) bool { return bytes.HasPrefix(tx, []byte(PreparePrefix)) }
+
+func isReplacedTx(tx []byte) bool {
+	return bytes.HasPrefix(tx, []byte(ReplacePrefix))
+}
+
+// execPrepareTx is noop. tx data is considered as placeholder
+// and is substitute at the PrepareProposal.
+func (app *PersistentKVStoreApplication) execPrepareTx(tx []byte) types.ResponseDeliverTx {
+	// noop
+	return types.ResponseDeliverTx{}
+}
+
+// substPrepareTx substitutes all the transactions prefixed with 'prepare' in the
+// proposal for transactions with the prefix stripped, while discarding invalid empty transactions.
+func (app *PersistentKVStoreApplication) substPrepareTx(blockData [][]byte, maxTxBytes int64) [][]byte {
+	txs := make([][]byte, 0, len(blockData))
+	var totalBytes int64
+	for _, tx := range blockData {
+		if len(tx) == 0 {
+			continue
+		}
+
+		txMod := tx
+		if isPrepareTx(tx) {
+			txMod = bytes.Replace(tx, []byte(PreparePrefix), []byte(ReplacePrefix), 1)
+		}
+		totalBytes += int64(len(txMod))
+		if totalBytes > maxTxBytes {
+			break
+		}
+		txs = append(txs, txMod)
+	}
+	return txs
+}

abci/server/server.go

@@ -2,9 +2,8 @@
 Package server is used to start a new ABCI server.
 
 It contains two server implementation:
- * gRPC server
- * socket server
-
+  - gRPC server
+  - socket server
 */
 package server
 

abci/server/socket_server.go

@@ -9,10 +9,10 @@ import (
 	"runtime"
 
 	"github.com/tendermint/tendermint/abci/types"
-	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"
+	tmsync "github.com/tendermint/tendermint/libs/sync"
 )
 
 // var maxNumberConnections = 2
@@ -227,6 +227,12 @@ func (s *SocketServer) handleRequest(req *types.Request, responses chan<- *types
 	case *types.Request_OfferSnapshot:
 		res := s.app.OfferSnapshot(*r.OfferSnapshot)
 		responses <- types.ToResponseOfferSnapshot(res)
+	case *types.Request_PrepareProposal:
+		res := s.app.PrepareProposal(*r.PrepareProposal)
+		responses <- types.ToResponsePrepareProposal(res)
+	case *types.Request_ProcessProposal:
+		res := s.app.ProcessProposal(*r.ProcessProposal)
+		responses <- types.ToResponseProcessProposal(res)
 	case *types.Request_LoadSnapshotChunk:
 		res := s.app.LoadSnapshotChunk(*r.LoadSnapshotChunk)
 		responses <- types.ToResponseLoadSnapshotChunk(res)

abci/tests/client_server_test.go

@@ -19,9 +19,12 @@ func TestClientServerNoAddrPrefix(t *testing.T) {
 	assert.NoError(t, err, "expected no error on NewServer")
 	err = server.Start()
 	assert.NoError(t, err, "expected no error on server.Start")
+	defer func() { _ = server.Stop() }()
 
 	client, err := abciclient.NewClient(addr, transport, true)
 	assert.NoError(t, err, "expected no error on NewClient")
 	err = client.Start()
 	assert.NoError(t, err, "expected no error on client.Start")
+
+	_ = client.Stop()
 }

abci/tests/server/client.go

@@ -2,28 +2,23 @@ package testsuite
 
 import (
 	"bytes"
-	"context"
 	"errors"
 	"fmt"
-	mrand "math/rand"
 
 	abcicli "github.com/tendermint/tendermint/abci/client"
 	"github.com/tendermint/tendermint/abci/types"
 	tmrand "github.com/tendermint/tendermint/libs/rand"
 )
 
-var ctx = context.Background()
-
 func InitChain(client abcicli.Client) error {
 	total := 10
 	vals := make([]types.ValidatorUpdate, total)
 	for i := 0; i < total; i++ {
 		pubkey := tmrand.Bytes(33)
-		// nolint:gosec // G404: Use of weak random number generator
-		power := mrand.Int()
+		power := tmrand.Int()
 		vals[i] = types.UpdateValidator(pubkey, int64(power), "")
 	}
-	_, err := client.InitChainSync(ctx, types.RequestInitChain{
+	_, err := client.InitChainSync(types.RequestInitChain{
 		Validators: vals,
 	})
 	if err != nil {
@@ -35,7 +30,7 @@ func InitChain(client abcicli.Client) error {
 }
 
 func Commit(client abcicli.Client, hashExp []byte) error {
-	res, err := client.CommitSync(ctx)
+	res, err := client.CommitSync()
 	data := res.Data
 	if err != nil {
 		fmt.Println("Failed test: Commit")
@@ -52,7 +47,7 @@ func Commit(client abcicli.Client, hashExp []byte) error {
 }
 
 func DeliverTx(client abcicli.Client, txBytes []byte, codeExp uint32, dataExp []byte) error {
-	res, _ := client.DeliverTxSync(ctx, types.RequestDeliverTx{Tx: txBytes})
+	res, _ := client.DeliverTxSync(types.RequestDeliverTx{Tx: txBytes})
 	code, data, log := res.Code, res.Data, res.Log
 	if code != codeExp {
 		fmt.Println("Failed test: DeliverTx")
@@ -70,8 +65,34 @@ func DeliverTx(client abcicli.Client, txBytes []byte, codeExp uint32, dataExp []
 	return nil
 }
 
+func PrepareProposal(client abcicli.Client, txBytes [][]byte, txExpected [][]byte, dataExp []byte) error {
+	res, _ := client.PrepareProposalSync(types.RequestPrepareProposal{Txs: txBytes})
+	for i, tx := range res.Txs {
+		if !bytes.Equal(tx, txExpected[i]) {
+			fmt.Println("Failed test: PrepareProposal")
+			fmt.Printf("PrepareProposal transaction was unexpected. Got %x expected %x.",
+				tx, txExpected[i])
+			return errors.New("PrepareProposal error")
+		}
+	}
+	fmt.Println("Passed test: PrepareProposal")
+	return nil
+}
+
+func ProcessProposal(client abcicli.Client, txBytes [][]byte, statusExp types.ResponseProcessProposal_ProposalStatus) error {
+	res, _ := client.ProcessProposalSync(types.RequestProcessProposal{Txs: txBytes})
+	if res.Status != statusExp {
+		fmt.Println("Failed test: ProcessProposal")
+		fmt.Printf("ProcessProposal response status was unexpected. Got %v expected %v.",
+			res.Status, statusExp)
+		return errors.New("ProcessProposal error")
+	}
+	fmt.Println("Passed test: ProcessProposal")
+	return nil
+}
+
 func CheckTx(client abcicli.Client, txBytes []byte, codeExp uint32, dataExp []byte) error {
-	res, _ := client.CheckTxSync(ctx, types.RequestCheckTx{Tx: txBytes})
+	res, _ := client.CheckTxSync(types.RequestCheckTx{Tx: txBytes})
 	code, data, log := res.Code, res.Data, res.Log
 	if code != codeExp {
 		fmt.Println("Failed test: CheckTx")

abci/tests/test_cli/ex1.abci

@@ -1,5 +1,7 @@
 echo hello
 info
+prepare_proposal "abc"
+process_proposal "abc"
 commit
 deliver_tx "abc"
 info
@@ -8,3 +10,9 @@ query "abc"
 deliver_tx "def=xyz"
 commit
 query "def"
+prepare_proposal "preparedef"
+process_proposal "replacedef"
+process_proposal "preparedef"
+prepare_proposal
+process_proposal
+commit

abci/tests/test_cli/ex1.abci.out

@@ -8,6 +8,14 @@
 -> data: {"size":0}
 -> data.hex: 0x7B2273697A65223A307D
 
+> prepare_proposal "abc"
+-> code: OK
+-> log: Succeeded. Tx: abc
+
+> process_proposal "abc"
+-> code: OK
+-> status: ACCEPT
+
 > commit 
 -> code: OK
 -> data.hex: 0x0000000000000000
@@ -49,3 +57,25 @@
 -> value: xyz
 -> value.hex: 78797A
 
+> prepare_proposal "preparedef"
+-> code: OK
+-> log: Succeeded. Tx: replacedef
+
+> process_proposal "replacedef"
+-> code: OK
+-> status: ACCEPT
+
+> process_proposal "preparedef"
+-> code: OK
+-> status: REJECT
+
+> prepare_proposal 
+
+> process_proposal 
+-> code: OK
+-> status: ACCEPT
+
+> commit 
+-> code: OK
+-> data.hex: 0x0400000000000000
+

abci/tests/test_cli/ex2.abci.out

@@ -18,6 +18,6 @@
 
 > info 
 -> code: OK
--> data: {"hashes":0,"txs":3}
--> data.hex: 0x7B22686173686573223A302C22747873223A337D
+-> data: {"size":3}
+-> data.hex: 0x7B2273697A65223A337D
 

abci/tests/test_cli/test.sh

@@ -30,6 +30,8 @@ function testExample() {
 		cat "${INPUT}.out.new"
 		echo "Expected:"
 		cat "${INPUT}.out"
+		echo "Diff:"
+		diff "${INPUT}.out" "${INPUT}.out.new"
 		exit 1
 	fi
 
@@ -37,6 +39,7 @@ function testExample() {
 }
 
 testExample 1 tests/test_cli/ex1.abci abci-cli kvstore
+testExample 2 tests/test_cli/ex2.abci abci-cli kvstore
 
 echo ""
 echo "PASS"

abci/types/application.go

@@ -1,9 +1,11 @@
 package types
 
 import (
-	"context"
+	context "golang.org/x/net/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,
@@ -17,7 +19,9 @@ 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
+	InitChain(RequestInitChain) ResponseInitChain // Initialize blockchain w validators/other info from TendermintCore
+	PrepareProposal(RequestPrepareProposal) ResponsePrepareProposal
+	ProcessProposal(RequestProcessProposal) ResponseProcessProposal
 	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
@@ -90,6 +94,24 @@ func (BaseApplication) ApplySnapshotChunk(req RequestApplySnapshotChunk) Respons
 	return ResponseApplySnapshotChunk{}
 }
 
+func (BaseApplication) PrepareProposal(req RequestPrepareProposal) ResponsePrepareProposal {
+	txs := make([][]byte, 0, len(req.Txs))
+	var totalBytes int64
+	for _, tx := range req.Txs {
+		totalBytes += int64(len(tx))
+		if totalBytes > req.MaxTxBytes {
+			break
+		}
+		txs = append(txs, tx)
+	}
+	return ResponsePrepareProposal{Txs: txs}
+}
+
+func (BaseApplication) ProcessProposal(req RequestProcessProposal) ResponseProcessProposal {
+	return ResponseProcessProposal{
+		Status: ResponseProcessProposal_ACCEPT}
+}
+
 //-------------------------------------------------------
 
 // GRPCApplication is a GRPC wrapper for Application
@@ -172,3 +194,15 @@ func (app *GRPCApplication) ApplySnapshotChunk(
 	res := app.app.ApplySnapshotChunk(*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
+}

abci/types/messages.go

@@ -3,8 +3,8 @@ package types
 import (
 	"io"
 
-	"github.com/gogo/protobuf/proto"
-	"github.com/tendermint/tendermint/internal/libs/protoio"
+	"github.com/cosmos/gogoproto/proto"
+	"github.com/tendermint/tendermint/libs/protoio"
 )
 
 const (
@@ -15,7 +15,11 @@ const (
 func WriteMessage(msg proto.Message, w io.Writer) error {
 	protoWriter := protoio.NewDelimitedWriter(w)
 	_, err := protoWriter.WriteMsg(msg)
-	return err
+	if err != nil {
+		return err
+	}
+
+	return nil
 }
 
 // ReadMessage reads a varint length-delimited protobuf message.
@@ -110,6 +114,18 @@ func ToRequestApplySnapshotChunk(req RequestApplySnapshotChunk) *Request {
 	}
 }
 
+func ToRequestPrepareProposal(req RequestPrepareProposal) *Request {
+	return &Request{
+		Value: &Request_PrepareProposal{&req},
+	}
+}
+
+func ToRequestProcessProposal(req RequestProcessProposal) *Request {
+	return &Request{
+		Value: &Request_ProcessProposal{&req},
+	}
+}
+
 //----------------------------------------
 
 func ToResponseException(errStr string) *Response {
@@ -135,6 +151,7 @@ func ToResponseInfo(res ResponseInfo) *Response {
 		Value: &Response_Info{&res},
 	}
 }
+
 func ToResponseDeliverTx(res ResponseDeliverTx) *Response {
 	return &Response{
 		Value: &Response_DeliverTx{&res},
@@ -200,3 +217,15 @@ func ToResponseApplySnapshotChunk(res ResponseApplySnapshotChunk) *Response {
 		Value: &Response_ApplySnapshotChunk{&res},
 	}
 }
+
+func ToResponsePrepareProposal(res ResponsePrepareProposal) *Response {
+	return &Response{
+		Value: &Response_PrepareProposal{&res},
+	}
+}
+
+func ToResponseProcessProposal(res ResponseProcessProposal) *Response {
+	return &Response{
+		Value: &Response_ProcessProposal{&res},
+	}
+}

abci/types/messages_test.go

@@ -6,7 +6,7 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/gogo/protobuf/proto"
+	"github.com/cosmos/gogoproto/proto"
 	"github.com/stretchr/testify/assert"
 
 	tmproto "github.com/tendermint/tendermint/proto/tendermint/types"

abci/types/mocks/application.go

@@ -0,0 +1,224 @@
+// 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
+}
+
+// BeginBlock provides a mock function with given fields: _a0
+func (_m *Application) BeginBlock(_a0 types.RequestBeginBlock) types.ResponseBeginBlock {
+	ret := _m.Called(_a0)
+
+	var r0 types.ResponseBeginBlock
+	if rf, ok := ret.Get(0).(func(types.RequestBeginBlock) types.ResponseBeginBlock); ok {
+		r0 = rf(_a0)
+	} else {
+		r0 = ret.Get(0).(types.ResponseBeginBlock)
+	}
+
+	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
+}
+
+// DeliverTx provides a mock function with given fields: _a0
+func (_m *Application) DeliverTx(_a0 types.RequestDeliverTx) types.ResponseDeliverTx {
+	ret := _m.Called(_a0)
+
+	var r0 types.ResponseDeliverTx
+	if rf, ok := ret.Get(0).(func(types.RequestDeliverTx) types.ResponseDeliverTx); ok {
+		r0 = rf(_a0)
+	} else {
+		r0 = ret.Get(0).(types.ResponseDeliverTx)
+	}
+
+	return r0
+}
+
+// EndBlock provides a mock function with given fields: _a0
+func (_m *Application) EndBlock(_a0 types.RequestEndBlock) types.ResponseEndBlock {
+	ret := _m.Called(_a0)
+
+	var r0 types.ResponseEndBlock
+	if rf, ok := ret.Get(0).(func(types.RequestEndBlock) types.ResponseEndBlock); ok {
+		r0 = rf(_a0)
+	} else {
+		r0 = ret.Get(0).(types.ResponseEndBlock)
+	}
+
+	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
+}
+
+type mockConstructorTestingTNewApplication interface {
+	mock.TestingT
+	Cleanup(func())
+}
+
+// NewApplication creates a new instance of Application. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
+func NewApplication(t mockConstructorTestingTNewApplication) *Application {
+	mock := &Application{}
+	mock.Mock.Test(t)
+
+	t.Cleanup(func() { mock.AssertExpectations(t) })
+
+	return mock
+}

abci/types/mocks/base.go

@@ -0,0 +1,187 @@
+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
+}
+
+// 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) BeginBlock(input types.RequestBeginBlock) types.ResponseBeginBlock {
+	var ret types.ResponseBeginBlock
+	defer func() {
+		if r := recover(); r != nil {
+			ret = m.base.BeginBlock(input)
+		}
+	}()
+	ret = m.Application.BeginBlock(input)
+	return ret
+}
+
+func (m BaseMock) DeliverTx(input types.RequestDeliverTx) types.ResponseDeliverTx {
+	var ret types.ResponseDeliverTx
+	defer func() {
+		if r := recover(); r != nil {
+			ret = m.base.DeliverTx(input)
+		}
+	}()
+	ret = m.Application.DeliverTx(input)
+	return ret
+}
+
+func (m BaseMock) EndBlock(input types.RequestEndBlock) types.ResponseEndBlock {
+	var ret types.ResponseEndBlock
+	defer func() {
+		if r := recover(); r != nil {
+			ret = m.base.EndBlock(input)
+		}
+	}()
+	ret = m.Application.EndBlock(input)
+	return ret
+}

abci/types/pubkey.go

@@ -6,7 +6,6 @@ import (
 	"github.com/tendermint/tendermint/crypto/ed25519"
 	cryptoenc "github.com/tendermint/tendermint/crypto/encoding"
 	"github.com/tendermint/tendermint/crypto/secp256k1"
-	"github.com/tendermint/tendermint/crypto/sr25519"
 )
 
 func Ed25519ValidatorUpdate(pk []byte, power int64) ValidatorUpdate {
@@ -18,6 +17,7 @@ func Ed25519ValidatorUpdate(pk []byte, power int64) ValidatorUpdate {
 	}
 
 	return ValidatorUpdate{
+		// Address:
 		PubKey: pkp,
 		Power:  power,
 	}
@@ -34,16 +34,7 @@ func UpdateValidator(pk []byte, power int64, keyType string) ValidatorUpdate {
 			panic(err)
 		}
 		return ValidatorUpdate{
-			PubKey: pkp,
-			Power:  power,
-		}
-	case sr25519.KeyType:
-		pke := sr25519.PubKey(pk)
-		pkp, err := cryptoenc.PubKeyToProto(pke)
-		if err != nil {
-			panic(err)
-		}
-		return ValidatorUpdate{
+			// Address:
 			PubKey: pkp,
 			Power:  power,
 		}

abci/types/types.go

@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"encoding/json"
 
-	"github.com/gogo/protobuf/jsonpb"
+	"github.com/cosmos/gogoproto/jsonpb"
 )
 
 const (
@@ -41,6 +41,16 @@ func (r ResponseQuery) IsErr() bool {
 	return r.Code != CodeTypeOK
 }
 
+// IsAccepted returns true if Code is ACCEPT
+func (r ResponseProcessProposal) IsAccepted() bool {
+	return r.Status == ResponseProcessProposal_ACCEPT
+}
+
+// IsStatusUnknown returns true if Code is UNKNOWN
+func (r ResponseProcessProposal) IsStatusUnknown() bool {
+	return r.Status == ResponseProcessProposal_UNKNOWN
+}
+
 //---------------------------------------------------------------------------
 // override JSON marshaling so we emit defaults (ie. disable omitempty)
 

appveyor.yml

@@ -0,0 +1,12 @@
+version: 1.0.{build}
+configuration: Release
+platform:
+  - x64
+  - x86
+clone_folder: c:\go\path\src\github.com\tendermint\tendermint
+before_build:
+  - cmd: set GOPATH=%GOROOT%\path
+  - cmd: set PATH=%GOPATH%\bin;%PATH%
+build_script:
+  - cmd: make test
+test: off

blocksync/msgs.go

@@ -0,0 +1,110 @@
+package blocksync
+
+import (
+	"errors"
+	"fmt"
+
+	"github.com/cosmos/gogoproto/proto"
+
+	bcproto "github.com/tendermint/tendermint/proto/tendermint/blocksync"
+	"github.com/tendermint/tendermint/types"
+)
+
+const (
+	// NOTE: keep up to date with bcproto.BlockResponse
+	BlockResponseMessagePrefixSize   = 4
+	BlockResponseMessageFieldKeySize = 1
+	MaxMsgSize                       = types.MaxBlockSizeBytes +
+		BlockResponseMessagePrefixSize +
+		BlockResponseMessageFieldKeySize
+)
+
+// EncodeMsg encodes a Protobuf message
+func EncodeMsg(pb proto.Message) ([]byte, error) {
+	msg := bcproto.Message{}
+
+	switch pb := pb.(type) {
+	case *bcproto.BlockRequest:
+		msg.Sum = &bcproto.Message_BlockRequest{BlockRequest: pb}
+	case *bcproto.BlockResponse:
+		msg.Sum = &bcproto.Message_BlockResponse{BlockResponse: pb}
+	case *bcproto.NoBlockResponse:
+		msg.Sum = &bcproto.Message_NoBlockResponse{NoBlockResponse: pb}
+	case *bcproto.StatusRequest:
+		msg.Sum = &bcproto.Message_StatusRequest{StatusRequest: pb}
+	case *bcproto.StatusResponse:
+		msg.Sum = &bcproto.Message_StatusResponse{StatusResponse: pb}
+	default:
+		return nil, fmt.Errorf("unknown message type %T", pb)
+	}
+
+	bz, err := proto.Marshal(&msg)
+	if err != nil {
+		return nil, fmt.Errorf("unable to marshal %T: %w", pb, err)
+	}
+
+	return bz, nil
+}
+
+// DecodeMsg decodes a Protobuf message.
+func DecodeMsg(bz []byte) (proto.Message, error) {
+	pb := &bcproto.Message{}
+
+	err := proto.Unmarshal(bz, pb)
+	if err != nil {
+		return nil, err
+	}
+
+	switch msg := pb.Sum.(type) {
+	case *bcproto.Message_BlockRequest:
+		return msg.BlockRequest, nil
+	case *bcproto.Message_BlockResponse:
+		return msg.BlockResponse, nil
+	case *bcproto.Message_NoBlockResponse:
+		return msg.NoBlockResponse, nil
+	case *bcproto.Message_StatusRequest:
+		return msg.StatusRequest, nil
+	case *bcproto.Message_StatusResponse:
+		return msg.StatusResponse, nil
+	default:
+		return nil, fmt.Errorf("unknown message type %T", msg)
+	}
+}
+
+// ValidateMsg validates a message.
+func ValidateMsg(pb proto.Message) error {
+	if pb == nil {
+		return errors.New("message cannot be nil")
+	}
+
+	switch msg := pb.(type) {
+	case *bcproto.BlockRequest:
+		if msg.Height < 0 {
+			return errors.New("negative Height")
+		}
+	case *bcproto.BlockResponse:
+		_, err := types.BlockFromProto(msg.Block)
+		if err != nil {
+			return err
+		}
+	case *bcproto.NoBlockResponse:
+		if msg.Height < 0 {
+			return errors.New("negative Height")
+		}
+	case *bcproto.StatusResponse:
+		if msg.Base < 0 {
+			return errors.New("negative Base")
+		}
+		if msg.Height < 0 {
+			return errors.New("negative Height")
+		}
+		if msg.Base > msg.Height {
+			return fmt.Errorf("base %v cannot be greater than height %v", msg.Base, msg.Height)
+		}
+	case *bcproto.StatusRequest:
+		return nil
+	default:
+		return fmt.Errorf("unknown message type %T", msg)
+	}
+	return nil
+}

blocksync/msgs_test.go

@@ -2,17 +2,19 @@ package blocksync_test
 
 import (
 	"encoding/hex"
-	math "math"
+	"math"
 	"testing"
 
-	proto "github.com/gogo/protobuf/proto"
+	"github.com/cosmos/gogoproto/proto"
+	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
+	"github.com/tendermint/tendermint/blocksync"
 	bcproto "github.com/tendermint/tendermint/proto/tendermint/blocksync"
 	"github.com/tendermint/tendermint/types"
 )
 
-func TestBlockRequest_Validate(t *testing.T) {
+func TestBcBlockRequestMessageValidateBasic(t *testing.T) {
 	testCases := []struct {
 		testName      string
 		requestHeight int64
@@ -26,15 +28,13 @@ func TestBlockRequest_Validate(t *testing.T) {
 	for _, tc := range testCases {
 		tc := tc
 		t.Run(tc.testName, func(t *testing.T) {
-			msg := &bcproto.Message{}
-			require.NoError(t, msg.Wrap(&bcproto.BlockRequest{Height: tc.requestHeight}))
-
-			require.Equal(t, tc.expectErr, msg.Validate() != nil)
+			request := bcproto.BlockRequest{Height: tc.requestHeight}
+			assert.Equal(t, tc.expectErr, blocksync.ValidateMsg(&request) != nil, "Validate Basic had an unexpected result")
 		})
 	}
 }
 
-func TestNoBlockResponse_Validate(t *testing.T) {
+func TestBcNoBlockResponseMessageValidateBasic(t *testing.T) {
 	testCases := []struct {
 		testName          string
 		nonResponseHeight int64
@@ -48,21 +48,18 @@ func TestNoBlockResponse_Validate(t *testing.T) {
 	for _, tc := range testCases {
 		tc := tc
 		t.Run(tc.testName, func(t *testing.T) {
-			msg := &bcproto.Message{}
-			require.NoError(t, msg.Wrap(&bcproto.NoBlockResponse{Height: tc.nonResponseHeight}))
-
-			require.Equal(t, tc.expectErr, msg.Validate() != nil)
+			nonResponse := bcproto.NoBlockResponse{Height: tc.nonResponseHeight}
+			assert.Equal(t, tc.expectErr, blocksync.ValidateMsg(&nonResponse) != nil, "Validate Basic had an unexpected result")
 		})
 	}
 }
 
-func TestStatusRequest_Validate(t *testing.T) {
-	msg := &bcproto.Message{}
-	require.NoError(t, msg.Wrap(&bcproto.StatusRequest{}))
-	require.NoError(t, msg.Validate())
+func TestBcStatusRequestMessageValidateBasic(t *testing.T) {
+	request := bcproto.StatusRequest{}
+	assert.NoError(t, blocksync.ValidateMsg(&request))
 }
 
-func TestStatusResponse_Validate(t *testing.T) {
+func TestBcStatusResponseMessageValidateBasic(t *testing.T) {
 	testCases := []struct {
 		testName       string
 		responseHeight int64
@@ -76,15 +73,13 @@ func TestStatusResponse_Validate(t *testing.T) {
 	for _, tc := range testCases {
 		tc := tc
 		t.Run(tc.testName, func(t *testing.T) {
-			msg := &bcproto.Message{}
-			require.NoError(t, msg.Wrap(&bcproto.StatusResponse{Height: tc.responseHeight}))
-
-			require.Equal(t, tc.expectErr, msg.Validate() != nil)
+			response := bcproto.StatusResponse{Height: tc.responseHeight}
+			assert.Equal(t, tc.expectErr, blocksync.ValidateMsg(&response) != nil, "Validate Basic had an unexpected result")
 		})
 	}
 }
 
-// nolint:lll
+//nolint:lll // ignore line length in tests
 func TestBlockchainMessageVectors(t *testing.T) {
 	block := types.MakeBlock(int64(3), []types.Tx{types.Tx("Hello World")}, nil, nil)
 	block.Version.Block = 11 // overwrite updated protocol version
@@ -123,8 +118,8 @@ func TestBlockchainMessageVectors(t *testing.T) {
 	for _, tc := range testCases {
 		tc := tc
 		t.Run(tc.testName, func(t *testing.T) {
-			bz, err := proto.Marshal(tc.bmsg)
-			require.NoError(t, err)
+			bz, _ := proto.Marshal(tc.bmsg)
+
 			require.Equal(t, tc.expBytes, hex.EncodeToString(bz))
 		})
 	}

blocksync/pool.go

@@ -1,4 +1,4 @@
-package v0
+package blocksync
 
 import (
 	"errors"
@@ -7,10 +7,11 @@ import (
 	"sync/atomic"
 	"time"
 
-	flow "github.com/tendermint/tendermint/internal/libs/flowrate"
-	tmsync "github.com/tendermint/tendermint/internal/libs/sync"
+	flow "github.com/tendermint/tendermint/libs/flowrate"
 	"github.com/tendermint/tendermint/libs/log"
 	"github.com/tendermint/tendermint/libs/service"
+	tmsync "github.com/tendermint/tendermint/libs/sync"
+	"github.com/tendermint/tendermint/p2p"
 	"github.com/tendermint/tendermint/types"
 )
 
@@ -29,9 +30,9 @@ eg, L = latency = 0.1s
 const (
 	requestIntervalMS         = 2
 	maxTotalRequesters        = 600
-	maxPeerErrBuffer          = 1000
 	maxPendingRequests        = maxTotalRequesters
 	maxPendingRequestsPerPeer = 20
+	requestRetrySeconds       = 30
 
 	// Minimum recv rate to ensure we're receiving blocks from a peer fast
 	// enough. If a peer is not sending us data at at least that rate, we
@@ -58,24 +59,17 @@ var peerTimeout = 15 * time.Second // not const so we can override with tests
 	are not at peer limits, we can probably switch to consensus reactor
 */
 
-// BlockRequest stores a block request identified by the block Height and the
-// PeerID responsible for delivering the block.
-type BlockRequest struct {
-	Height int64
-	PeerID types.NodeID
-}
-
 // BlockPool keeps track of the block sync peers, block requests and block responses.
 type BlockPool struct {
 	service.BaseService
-	lastAdvance time.Time
+	startTime time.Time
 
-	mtx tmsync.RWMutex
+	mtx tmsync.Mutex
 	// block requests
 	requesters map[int64]*bpRequester
 	height     int64 // the lowest key in requesters.
 	// peers
-	peers         map[types.NodeID]*bpPeer
+	peers         map[p2p.ID]*bpPeer
 	maxPeerHeight int64 // the biggest reported height
 
 	// atomic
@@ -83,26 +77,20 @@ type BlockPool struct {
 
 	requestsCh chan<- BlockRequest
 	errorsCh   chan<- peerError
-
-	startHeight               int64
-	lastHundredBlockTimeStamp time.Time
-	lastSyncRate              float64
 }
 
 // NewBlockPool returns a new BlockPool with the height equal to start. Block
 // requests and errors will be sent to requestsCh and errorsCh accordingly.
 func NewBlockPool(start int64, requestsCh chan<- BlockRequest, errorsCh chan<- peerError) *BlockPool {
 	bp := &BlockPool{
-		peers: make(map[types.NodeID]*bpPeer),
+		peers: make(map[p2p.ID]*bpPeer),
 
-		requesters:  make(map[int64]*bpRequester),
-		height:      start,
-		startHeight: start,
-		numPending:  0,
+		requesters: make(map[int64]*bpRequester),
+		height:     start,
+		numPending: 0,
 
-		requestsCh:   requestsCh,
-		errorsCh:     errorsCh,
-		lastSyncRate: 0,
+		requestsCh: requestsCh,
+		errorsCh:   errorsCh,
 	}
 	bp.BaseService = *service.NewBaseService(nil, "BlockPool", bp)
 	return bp
@@ -111,9 +99,8 @@ func NewBlockPool(start int64, requestsCh chan<- BlockRequest, errorsCh chan<- p
 // OnStart implements service.Service by spawning requesters routine and recording
 // pool's start time.
 func (pool *BlockPool) OnStart() error {
-	pool.lastAdvance = time.Now()
-	pool.lastHundredBlockTimeStamp = pool.lastAdvance
 	go pool.makeRequestersRoutine()
+	pool.startTime = time.Now()
 	return nil
 }
 
@@ -148,7 +135,6 @@ func (pool *BlockPool) removeTimedoutPeers() {
 	defer pool.mtx.Unlock()
 
 	for _, peer := range pool.peers {
-		// check if peer timed out
 		if !peer.didTimeout && peer.numPending > 0 {
 			curRate := peer.recvMonitor.Status().CurRate
 			// curRate can be 0 on start
@@ -162,7 +148,6 @@ func (pool *BlockPool) removeTimedoutPeers() {
 				peer.didTimeout = true
 			}
 		}
-
 		if peer.didTimeout {
 			pool.removePeer(peer.id)
 		}
@@ -172,25 +157,33 @@ func (pool *BlockPool) removeTimedoutPeers() {
 // GetStatus returns pool's height, numPending requests and the number of
 // requesters.
 func (pool *BlockPool) GetStatus() (height int64, numPending int32, lenRequesters int) {
-	pool.mtx.RLock()
-	defer pool.mtx.RUnlock()
+	pool.mtx.Lock()
+	defer pool.mtx.Unlock()
 
 	return pool.height, atomic.LoadInt32(&pool.numPending), len(pool.requesters)
 }
 
 // IsCaughtUp returns true if this node is caught up, false - otherwise.
+// TODO: relax conditions, prevent abuse.
 func (pool *BlockPool) IsCaughtUp() bool {
-	pool.mtx.RLock()
-	defer pool.mtx.RUnlock()
+	pool.mtx.Lock()
+	defer pool.mtx.Unlock()
 
 	// Need at least 1 peer to be considered caught up.
 	if len(pool.peers) == 0 {
+		pool.Logger.Debug("Blockpool has no peers")
 		return false
 	}
 
-	// NOTE: we use maxPeerHeight - 1 because to sync block H requires block H+1
+	// Some conditions to determine if we're caught up.
+	// Ensures we've either received a block or waited some amount of time,
+	// and that we're synced to the highest known height.
+	// Note we use maxPeerHeight - 1 because to sync block H requires block H+1
 	// to verify the LastCommit.
-	return pool.height >= (pool.maxPeerHeight - 1)
+	receivedBlockOrTimedOut := pool.height > 0 || time.Since(pool.startTime) > 5*time.Second
+	ourChainIsLongestAmongPeers := pool.maxPeerHeight == 0 || pool.height >= (pool.maxPeerHeight-1)
+	isCaughtUp := receivedBlockOrTimedOut && ourChainIsLongestAmongPeers
+	return isCaughtUp
 }
 
 // PeekTwoBlocks returns blocks at pool.height and pool.height+1.
@@ -198,8 +191,8 @@ func (pool *BlockPool) IsCaughtUp() bool {
 // So we peek two blocks at a time.
 // The caller will verify the commit.
 func (pool *BlockPool) PeekTwoBlocks() (first *types.Block, second *types.Block) {
-	pool.mtx.RLock()
-	defer pool.mtx.RUnlock()
+	pool.mtx.Lock()
+	defer pool.mtx.Unlock()
 
 	if r := pool.requesters[pool.height]; r != nil {
 		first = r.getBlock()
@@ -217,25 +210,16 @@ func (pool *BlockPool) PopRequest() {
 	defer pool.mtx.Unlock()
 
 	if r := pool.requesters[pool.height]; r != nil {
+		/*  The block can disappear at any time, due to removePeer().
+		if r := pool.requesters[pool.height]; r == nil || r.block == nil {
+			PanicSanity("PopRequest() requires a valid block")
+		}
+		*/
 		if err := r.Stop(); err != nil {
 			pool.Logger.Error("Error stopping requester", "err", err)
 		}
 		delete(pool.requesters, pool.height)
 		pool.height++
-		pool.lastAdvance = time.Now()
-
-		// the lastSyncRate will be updated every 100 blocks, it uses the adaptive filter
-		// to smooth the block sync rate and the unit represents the number of blocks per second.
-		if (pool.height-pool.startHeight)%100 == 0 {
-			newSyncRate := 100 / time.Since(pool.lastHundredBlockTimeStamp).Seconds()
-			if pool.lastSyncRate == 0 {
-				pool.lastSyncRate = newSyncRate
-			} else {
-				pool.lastSyncRate = 0.9*pool.lastSyncRate + 0.1*newSyncRate
-			}
-			pool.lastHundredBlockTimeStamp = time.Now()
-		}
-
 	} else {
 		panic(fmt.Sprintf("Expected requester to pop, got nothing at height %v", pool.height))
 	}
@@ -244,13 +228,13 @@ func (pool *BlockPool) PopRequest() {
 // RedoRequest invalidates the block at pool.height,
 // Remove the peer and redo request from others.
 // Returns the ID of the removed peer.
-func (pool *BlockPool) RedoRequest(height int64) types.NodeID {
+func (pool *BlockPool) RedoRequest(height int64) p2p.ID {
 	pool.mtx.Lock()
 	defer pool.mtx.Unlock()
 
 	request := pool.requesters[height]
 	peerID := request.getPeerID()
-	if peerID != types.NodeID("") {
+	if peerID != p2p.ID("") {
 		// RemovePeer will redo all requesters associated with this peer.
 		pool.removePeer(peerID)
 	}
@@ -259,14 +243,20 @@ func (pool *BlockPool) RedoRequest(height int64) types.NodeID {
 
 // AddBlock validates that the block comes from the peer it was expected from and calls the requester to store it.
 // TODO: ensure that blocks come in order for each peer.
-func (pool *BlockPool) AddBlock(peerID types.NodeID, block *types.Block, blockSize int) {
+func (pool *BlockPool) AddBlock(peerID p2p.ID, block *types.Block, blockSize int) {
 	pool.mtx.Lock()
 	defer pool.mtx.Unlock()
 
 	requester := pool.requesters[block.Height]
 	if requester == nil {
-		pool.Logger.Error("peer sent us a block we didn't expect",
-			"peer", peerID, "curHeight", pool.height, "blockHeight", block.Height)
+		pool.Logger.Info(
+			"peer sent us a block we didn't expect",
+			"peer",
+			peerID,
+			"curHeight",
+			pool.height,
+			"blockHeight",
+			block.Height)
 		diff := pool.height - block.Height
 		if diff < 0 {
 			diff *= -1
@@ -284,29 +274,20 @@ func (pool *BlockPool) AddBlock(peerID types.NodeID, block *types.Block, blockSi
 			peer.decrPending(blockSize)
 		}
 	} else {
-		err := errors.New("requester is different or block already exists")
-		pool.Logger.Error(err.Error(), "peer", peerID, "requester", requester.getPeerID(), "blockHeight", block.Height)
-		pool.sendError(err, peerID)
+		pool.Logger.Info("invalid peer", "peer", peerID, "blockHeight", block.Height)
+		pool.sendError(errors.New("invalid peer"), peerID)
 	}
 }
 
 // MaxPeerHeight returns the highest reported height.
 func (pool *BlockPool) MaxPeerHeight() int64 {
-	pool.mtx.RLock()
-	defer pool.mtx.RUnlock()
+	pool.mtx.Lock()
+	defer pool.mtx.Unlock()
 	return pool.maxPeerHeight
 }
 
-// LastAdvance returns the time when the last block was processed (or start
-// time if no blocks were processed).
-func (pool *BlockPool) LastAdvance() time.Time {
-	pool.mtx.RLock()
-	defer pool.mtx.RUnlock()
-	return pool.lastAdvance
-}
-
 // SetPeerRange sets the peer's alleged blockchain base and height.
-func (pool *BlockPool) SetPeerRange(peerID types.NodeID, base int64, height int64) {
+func (pool *BlockPool) SetPeerRange(peerID p2p.ID, base int64, height int64) {
 	pool.mtx.Lock()
 	defer pool.mtx.Unlock()
 
@@ -327,14 +308,14 @@ func (pool *BlockPool) SetPeerRange(peerID types.NodeID, base int64, height int6
 
 // RemovePeer removes the peer with peerID from the pool. If there's no peer
 // with peerID, function is a no-op.
-func (pool *BlockPool) RemovePeer(peerID types.NodeID) {
+func (pool *BlockPool) RemovePeer(peerID p2p.ID) {
 	pool.mtx.Lock()
 	defer pool.mtx.Unlock()
 
 	pool.removePeer(peerID)
 }
 
-func (pool *BlockPool) removePeer(peerID types.NodeID) {
+func (pool *BlockPool) removePeer(peerID p2p.ID) {
 	for _, requester := range pool.requesters {
 		if requester.getPeerID() == peerID {
 			requester.redo(peerID)
@@ -415,14 +396,14 @@ func (pool *BlockPool) requestersLen() int64 {
 	return int64(len(pool.requesters))
 }
 
-func (pool *BlockPool) sendRequest(height int64, peerID types.NodeID) {
+func (pool *BlockPool) sendRequest(height int64, peerID p2p.ID) {
 	if !pool.IsRunning() {
 		return
 	}
 	pool.requestsCh <- BlockRequest{height, peerID}
 }
 
-func (pool *BlockPool) sendError(err error, peerID types.NodeID) {
+func (pool *BlockPool) sendError(err error, peerID p2p.ID) {
 	if !pool.IsRunning() {
 		return
 	}
@@ -430,6 +411,7 @@ func (pool *BlockPool) sendError(err error, peerID types.NodeID) {
 }
 
 // for debugging purposes
+//
 //nolint:unused
 func (pool *BlockPool) debug() string {
 	pool.mtx.Lock()
@@ -448,20 +430,6 @@ func (pool *BlockPool) debug() string {
 	return str
 }
 
-func (pool *BlockPool) targetSyncBlocks() int64 {
-	pool.mtx.RLock()
-	defer pool.mtx.RUnlock()
-
-	return pool.maxPeerHeight - pool.startHeight + 1
-}
-
-func (pool *BlockPool) getLastSyncRate() float64 {
-	pool.mtx.RLock()
-	defer pool.mtx.RUnlock()
-
-	return pool.lastSyncRate
-}
-
 //-------------------------------------
 
 type bpPeer struct {
@@ -470,7 +438,7 @@ type bpPeer struct {
 	height      int64
 	base        int64
 	pool        *BlockPool
-	id          types.NodeID
+	id          p2p.ID
 	recvMonitor *flow.Monitor
 
 	timeout *time.Timer
@@ -478,7 +446,7 @@ type bpPeer struct {
 	logger log.Logger
 }
 
-func newBPPeer(pool *BlockPool, peerID types.NodeID, base int64, height int64) *bpPeer {
+func newBPPeer(pool *BlockPool, peerID p2p.ID, base int64, height int64) *bpPeer {
 	peer := &bpPeer{
 		pool:       pool,
 		id:         peerID,
@@ -543,10 +511,10 @@ type bpRequester struct {
 	pool       *BlockPool
 	height     int64
 	gotBlockCh chan struct{}
-	redoCh     chan types.NodeID // redo may send multitime, add peerId to identify repeat
+	redoCh     chan p2p.ID // redo may send multitime, add peerId to identify repeat
 
 	mtx    tmsync.Mutex
-	peerID types.NodeID
+	peerID p2p.ID
 	block  *types.Block
 }
 
@@ -555,7 +523,7 @@ func newBPRequester(pool *BlockPool, height int64) *bpRequester {
 		pool:       pool,
 		height:     height,
 		gotBlockCh: make(chan struct{}, 1),
-		redoCh:     make(chan types.NodeID, 1),
+		redoCh:     make(chan p2p.ID, 1),
 
 		peerID: "",
 		block:  nil,
@@ -570,7 +538,7 @@ func (bpr *bpRequester) OnStart() error {
 }
 
 // Returns true if the peer matches and block doesn't already exist.
-func (bpr *bpRequester) setBlock(block *types.Block, peerID types.NodeID) bool {
+func (bpr *bpRequester) setBlock(block *types.Block, peerID p2p.ID) bool {
 	bpr.mtx.Lock()
 	if bpr.block != nil || bpr.peerID != peerID {
 		bpr.mtx.Unlock()
@@ -592,7 +560,7 @@ func (bpr *bpRequester) getBlock() *types.Block {
 	return bpr.block
 }
 
-func (bpr *bpRequester) getPeerID() types.NodeID {
+func (bpr *bpRequester) getPeerID() p2p.ID {
 	bpr.mtx.Lock()
 	defer bpr.mtx.Unlock()
 	return bpr.peerID
@@ -614,7 +582,7 @@ func (bpr *bpRequester) reset() {
 // Tells bpRequester to pick another peer and try again.
 // NOTE: Nonblocking, and does nothing if another redo
 // was already requested.
-func (bpr *bpRequester) redo(peerID types.NodeID) {
+func (bpr *bpRequester) redo(peerID p2p.ID) {
 	select {
 	case bpr.redoCh <- peerID:
 	default:
@@ -635,6 +603,7 @@ OUTER_LOOP:
 			}
 			peer = bpr.pool.pickIncrAvailablePeer(bpr.height)
 			if peer == nil {
+				bpr.Logger.Debug("No peers currently available; will retry shortly", "height", bpr.height)
 				time.Sleep(requestIntervalMS * time.Millisecond)
 				continue PICK_PEER_LOOP
 			}
@@ -644,6 +613,7 @@ OUTER_LOOP:
 		bpr.peerID = peer.id
 		bpr.mtx.Unlock()
 
+		to := time.NewTimer(requestRetrySeconds * time.Second)
 		// Send request and wait.
 		bpr.pool.sendRequest(bpr.height, peer.id)
 	WAIT_LOOP:
@@ -656,6 +626,11 @@ OUTER_LOOP:
 				return
 			case <-bpr.Quit():
 				return
+			case <-to.C:
+				bpr.Logger.Debug("Retrying block request after timeout", "height", bpr.height, "peer", bpr.peerID)
+				// Simulate a redo
+				bpr.reset()
+				continue OUTER_LOOP
 			case peerID := <-bpr.redoCh:
 				if peerID == bpr.peerID {
 					bpr.reset()
@@ -671,3 +646,10 @@ OUTER_LOOP:
 		}
 	}
 }
+
+// BlockRequest stores a block request identified by the block Height and the PeerID responsible for
+// delivering the block
+type BlockRequest struct {
+	Height int64
+	PeerID p2p.ID
+}

blocksync/pool_test.go

@@ -1,8 +1,7 @@
-package v0
+package blocksync
 
 import (
 	"fmt"
-	mrand "math/rand"
 	"testing"
 	"time"
 
@@ -11,6 +10,7 @@ import (
 
 	"github.com/tendermint/tendermint/libs/log"
 	tmrand "github.com/tendermint/tendermint/libs/rand"
+	"github.com/tendermint/tendermint/p2p"
 	"github.com/tendermint/tendermint/types"
 )
 
@@ -19,7 +19,7 @@ func init() {
 }
 
 type testPeer struct {
-	id        types.NodeID
+	id        p2p.ID
 	base      int64
 	height    int64
 	inputChan chan inputData // make sure each peer's data is sequential
@@ -49,7 +49,7 @@ func (p testPeer) simulateInput(input inputData) {
 	// input.t.Logf("Added block from peer %v (height: %v)", input.request.PeerID, input.request.Height)
 }
 
-type testPeers map[types.NodeID]testPeer
+type testPeers map[p2p.ID]testPeer
 
 func (ps testPeers) start() {
 	for _, v := range ps {
@@ -66,8 +66,8 @@ func (ps testPeers) stop() {
 func makePeers(numPeers int, minHeight, maxHeight int64) testPeers {
 	peers := make(testPeers, numPeers)
 	for i := 0; i < numPeers; i++ {
-		peerID := types.NodeID(tmrand.Str(12))
-		height := minHeight + mrand.Int63n(maxHeight-minHeight)
+		peerID := p2p.ID(tmrand.Str(12))
+		height := minHeight + tmrand.Int63n(maxHeight-minHeight)
 		base := minHeight + int64(i)
 		if base > height {
 			base = height
@@ -182,7 +182,7 @@ func TestBlockPoolTimeout(t *testing.T) {
 
 	// Pull from channels
 	counter := 0
-	timedOut := map[types.NodeID]struct{}{}
+	timedOut := map[p2p.ID]struct{}{}
 	for {
 		select {
 		case err := <-errorsCh:
@@ -203,7 +203,7 @@ func TestBlockPoolTimeout(t *testing.T) {
 func TestBlockPoolRemovePeer(t *testing.T) {
 	peers := make(testPeers, 10)
 	for i := 0; i < 10; i++ {
-		peerID := types.NodeID(fmt.Sprintf("%d", i+1))
+		peerID := p2p.ID(fmt.Sprintf("%d", i+1))
 		height := int64(i + 1)
 		peers[peerID] = testPeer{peerID, 0, height, make(chan inputData)}
 	}
@@ -227,10 +227,10 @@ func TestBlockPoolRemovePeer(t *testing.T) {
 	assert.EqualValues(t, 10, pool.MaxPeerHeight())
 
 	// remove not-existing peer
-	assert.NotPanics(t, func() { pool.RemovePeer(types.NodeID("Superman")) })
+	assert.NotPanics(t, func() { pool.RemovePeer(p2p.ID("Superman")) })
 
 	// remove peer with biggest height
-	pool.RemovePeer(types.NodeID("10"))
+	pool.RemovePeer(p2p.ID("10"))
 	assert.EqualValues(t, 9, pool.MaxPeerHeight())
 
 	// remove all peers

blocksync/reactor.go

@@ -0,0 +1,442 @@
+package blocksync
+
+import (
+	"fmt"
+	"reflect"
+	"time"
+
+	"github.com/tendermint/tendermint/libs/log"
+	"github.com/tendermint/tendermint/p2p"
+	bcproto "github.com/tendermint/tendermint/proto/tendermint/blocksync"
+	sm "github.com/tendermint/tendermint/state"
+	"github.com/tendermint/tendermint/store"
+	"github.com/tendermint/tendermint/types"
+)
+
+const (
+	// BlocksyncChannel is a channel for blocks and status updates (`BlockStore` height)
+	BlocksyncChannel = byte(0x40)
+
+	trySyncIntervalMS = 10
+
+	// stop syncing when last block's time is
+	// within this much of the system time.
+	// stopSyncingDurationMinutes = 10
+
+	// ask for best height every 10s
+	statusUpdateIntervalSeconds = 10
+	// check if we should switch to consensus reactor
+	switchToConsensusIntervalSeconds = 1
+)
+
+type consensusReactor interface {
+	// for when we switch from blockchain reactor and block sync to
+	// the consensus machine
+	SwitchToConsensus(state sm.State, skipWAL bool)
+}
+
+type peerError struct {
+	err    error
+	peerID p2p.ID
+}
+
+func (e peerError) Error() string {
+	return fmt.Sprintf("error with peer %v: %s", e.peerID, e.err.Error())
+}
+
+// Reactor handles long-term catchup syncing.
+type Reactor struct {
+	p2p.BaseReactor
+
+	// immutable
+	initialState sm.State
+
+	blockExec *sm.BlockExecutor
+	store     *store.BlockStore
+	pool      *BlockPool
+	blockSync bool
+
+	requestsCh <-chan BlockRequest
+	errorsCh   <-chan peerError
+}
+
+// NewReactor returns new reactor instance.
+func NewReactor(state sm.State, blockExec *sm.BlockExecutor, store *store.BlockStore,
+	blockSync bool) *Reactor {
+
+	if state.LastBlockHeight != store.Height() {
+		panic(fmt.Sprintf("state (%v) and store (%v) height mismatch", state.LastBlockHeight,
+			store.Height()))
+	}
+
+	requestsCh := make(chan BlockRequest, maxTotalRequesters)
+
+	const capacity = 1000                      // must be bigger than peers count
+	errorsCh := make(chan peerError, capacity) // so we don't block in #Receive#pool.AddBlock
+
+	startHeight := store.Height() + 1
+	if startHeight == 1 {
+		startHeight = state.InitialHeight
+	}
+	pool := NewBlockPool(startHeight, requestsCh, errorsCh)
+
+	bcR := &Reactor{
+		initialState: state,
+		blockExec:    blockExec,
+		store:        store,
+		pool:         pool,
+		blockSync:    blockSync,
+		requestsCh:   requestsCh,
+		errorsCh:     errorsCh,
+	}
+	bcR.BaseReactor = *p2p.NewBaseReactor("Reactor", bcR)
+	return bcR
+}
+
+// SetLogger implements service.Service by setting the logger on reactor and pool.
+func (bcR *Reactor) SetLogger(l log.Logger) {
+	bcR.BaseService.Logger = l
+	bcR.pool.Logger = l
+}
+
+// OnStart implements service.Service.
+func (bcR *Reactor) OnStart() error {
+	if bcR.blockSync {
+		err := bcR.pool.Start()
+		if err != nil {
+			return err
+		}
+		go bcR.poolRoutine(false)
+	}
+	return nil
+}
+
+// SwitchToBlockSync is called by the state sync reactor when switching to block sync.
+func (bcR *Reactor) SwitchToBlockSync(state sm.State) error {
+	bcR.blockSync = true
+	bcR.initialState = state
+
+	bcR.pool.height = state.LastBlockHeight + 1
+	err := bcR.pool.Start()
+	if err != nil {
+		return err
+	}
+	go bcR.poolRoutine(true)
+	return nil
+}
+
+// OnStop implements service.Service.
+func (bcR *Reactor) OnStop() {
+	if bcR.blockSync {
+		if err := bcR.pool.Stop(); err != nil {
+			bcR.Logger.Error("Error stopping pool", "err", err)
+		}
+	}
+}
+
+// GetChannels implements Reactor
+func (bcR *Reactor) GetChannels() []*p2p.ChannelDescriptor {
+	return []*p2p.ChannelDescriptor{
+		{
+			ID:                  BlocksyncChannel,
+			Priority:            5,
+			SendQueueCapacity:   1000,
+			RecvBufferCapacity:  50 * 4096,
+			RecvMessageCapacity: MaxMsgSize,
+		},
+	}
+}
+
+// AddPeer implements Reactor by sending our state to peer.
+func (bcR *Reactor) AddPeer(peer p2p.Peer) {
+	msgBytes, err := EncodeMsg(&bcproto.StatusResponse{
+		Base:   bcR.store.Base(),
+		Height: bcR.store.Height()})
+	if err != nil {
+		bcR.Logger.Error("could not convert msg to protobuf", "err", err)
+		return
+	}
+
+	peer.Send(BlocksyncChannel, msgBytes)
+	// it's OK if send fails. will try later in poolRoutine
+
+	// peer is added to the pool once we receive the first
+	// bcStatusResponseMessage from the peer and call pool.SetPeerRange
+}
+
+// RemovePeer implements Reactor by removing peer from the pool.
+func (bcR *Reactor) RemovePeer(peer p2p.Peer, reason interface{}) {
+	bcR.pool.RemovePeer(peer.ID())
+}
+
+// respondToPeer loads a block and sends it to the requesting peer,
+// if we have it. Otherwise, we'll respond saying we don't have it.
+func (bcR *Reactor) respondToPeer(msg *bcproto.BlockRequest,
+	src p2p.Peer) (queued bool) {
+
+	block := bcR.store.LoadBlock(msg.Height)
+	if block != nil {
+		bl, err := block.ToProto()
+		if err != nil {
+			bcR.Logger.Error("could not convert msg to protobuf", "err", err)
+			return false
+		}
+
+		msgBytes, err := EncodeMsg(&bcproto.BlockResponse{Block: bl})
+		if err != nil {
+			bcR.Logger.Error("could not marshal msg", "err", err)
+			return false
+		}
+
+		return src.TrySend(BlocksyncChannel, msgBytes)
+	}
+
+	bcR.Logger.Info("Peer asking for a block we don't have", "src", src, "height", msg.Height)
+
+	msgBytes, err := EncodeMsg(&bcproto.NoBlockResponse{Height: msg.Height})
+	if err != nil {
+		bcR.Logger.Error("could not convert msg to protobuf", "err", err)
+		return false
+	}
+
+	return src.TrySend(BlocksyncChannel, msgBytes)
+}
+
+// Receive implements Reactor by handling 4 types of messages (look below).
+func (bcR *Reactor) Receive(chID byte, src p2p.Peer, msgBytes []byte) {
+	msg, err := DecodeMsg(msgBytes)
+	if err != nil {
+		bcR.Logger.Error("Error decoding message", "src", src, "chId", chID, "err", err)
+		bcR.Switch.StopPeerForError(src, err)
+		return
+	}
+
+	if err = ValidateMsg(msg); err != nil {
+		bcR.Logger.Error("Peer sent us invalid msg", "peer", src, "msg", msg, "err", err)
+		bcR.Switch.StopPeerForError(src, err)
+		return
+	}
+
+	bcR.Logger.Debug("Receive", "src", src, "chID", chID, "msg", msg)
+
+	switch msg := msg.(type) {
+	case *bcproto.BlockRequest:
+		bcR.respondToPeer(msg, src)
+	case *bcproto.BlockResponse:
+		bi, err := types.BlockFromProto(msg.Block)
+		if err != nil {
+			bcR.Logger.Error("Block content is invalid", "err", err)
+			return
+		}
+		bcR.pool.AddBlock(src.ID(), bi, len(msgBytes))
+	case *bcproto.StatusRequest:
+		// Send peer our state.
+		msgBytes, err := EncodeMsg(&bcproto.StatusResponse{
+			Height: bcR.store.Height(),
+			Base:   bcR.store.Base(),
+		})
+		if err != nil {
+			bcR.Logger.Error("could not convert msg to protobut", "err", err)
+			return
+		}
+		src.TrySend(BlocksyncChannel, msgBytes)
+	case *bcproto.StatusResponse:
+		// Got a peer status. Unverified.
+		bcR.pool.SetPeerRange(src.ID(), msg.Base, msg.Height)
+	case *bcproto.NoBlockResponse:
+		bcR.Logger.Debug("Peer does not have requested block", "peer", src, "height", msg.Height)
+	default:
+		bcR.Logger.Error(fmt.Sprintf("Unknown message type %v", reflect.TypeOf(msg)))
+	}
+}
+
+// Handle messages from the poolReactor telling the reactor what to do.
+// NOTE: Don't sleep in the FOR_LOOP or otherwise slow it down!
+func (bcR *Reactor) poolRoutine(stateSynced bool) {
+
+	trySyncTicker := time.NewTicker(trySyncIntervalMS * time.Millisecond)
+	defer trySyncTicker.Stop()
+
+	statusUpdateTicker := time.NewTicker(statusUpdateIntervalSeconds * time.Second)
+	defer statusUpdateTicker.Stop()
+
+	switchToConsensusTicker := time.NewTicker(switchToConsensusIntervalSeconds * time.Second)
+	defer switchToConsensusTicker.Stop()
+
+	blocksSynced := uint64(0)
+
+	chainID := bcR.initialState.ChainID
+	state := bcR.initialState
+
+	lastHundred := time.Now()
+	lastRate := 0.0
+
+	didProcessCh := make(chan struct{}, 1)
+
+	go func() {
+		for {
+			select {
+			case <-bcR.Quit():
+				return
+			case <-bcR.pool.Quit():
+				return
+			case request := <-bcR.requestsCh:
+				peer := bcR.Switch.Peers().Get(request.PeerID)
+				if peer == nil {
+					continue
+				}
+				msgBytes, err := EncodeMsg(&bcproto.BlockRequest{Height: request.Height})
+				if err != nil {
+					bcR.Logger.Error("could not convert msg to proto", "err", err)
+					continue
+				}
+
+				queued := peer.TrySend(BlocksyncChannel, msgBytes)
+				if !queued {
+					bcR.Logger.Debug("Send queue is full, drop block request", "peer", peer.ID(), "height", request.Height)
+				}
+			case err := <-bcR.errorsCh:
+				peer := bcR.Switch.Peers().Get(err.peerID)
+				if peer != nil {
+					bcR.Switch.StopPeerForError(peer, err)
+				}
+
+			case <-statusUpdateTicker.C:
+				// ask for status updates
+				go bcR.BroadcastStatusRequest() //nolint: errcheck
+
+			}
+		}
+	}()
+
+FOR_LOOP:
+	for {
+		select {
+		case <-switchToConsensusTicker.C:
+			height, numPending, lenRequesters := bcR.pool.GetStatus()
+			outbound, inbound, _ := bcR.Switch.NumPeers()
+			bcR.Logger.Debug("Consensus ticker", "numPending", numPending, "total", lenRequesters,
+				"outbound", outbound, "inbound", inbound)
+			if bcR.pool.IsCaughtUp() {
+				bcR.Logger.Info("Time to switch to consensus reactor!", "height", height)
+				if err := bcR.pool.Stop(); err != nil {
+					bcR.Logger.Error("Error stopping pool", "err", err)
+				}
+				conR, ok := bcR.Switch.Reactor("CONSENSUS").(consensusReactor)
+				if ok {
+					conR.SwitchToConsensus(state, blocksSynced > 0 || stateSynced)
+				}
+				// else {
+				// should only happen during testing
+				// }
+
+				break FOR_LOOP
+			}
+
+		case <-trySyncTicker.C: // chan time
+			select {
+			case didProcessCh <- struct{}{}:
+			default:
+			}
+
+		case <-didProcessCh:
+			// NOTE: It is a subtle mistake to process more than a single block
+			// at a time (e.g. 10) here, because we only TrySend 1 request per
+			// loop.  The ratio mismatch can result in starving of blocks, a
+			// sudden burst of requests and responses, and repeat.
+			// Consequently, it is better to split these routines rather than
+			// coupling them as it's written here.  TODO uncouple from request
+			// routine.
+
+			// See if there are any blocks to sync.
+			first, second := bcR.pool.PeekTwoBlocks()
+			// bcR.Logger.Info("TrySync peeked", "first", first, "second", second)
+			if first == nil || second == nil {
+				// We need both to sync the first block.
+				continue FOR_LOOP
+			} else {
+				// Try again quickly next loop.
+				didProcessCh <- struct{}{}
+			}
+
+			firstParts, err := first.MakePartSet(types.BlockPartSizeBytes)
+			if err != nil {
+				bcR.Logger.Error("failed to make ",
+					"height", first.Height,
+					"err", err.Error())
+				break FOR_LOOP
+			}
+			firstPartSetHeader := firstParts.Header()
+			firstID := types.BlockID{Hash: first.Hash(), PartSetHeader: firstPartSetHeader}
+			// Finally, verify the first block using the second's commit
+			// NOTE: we can probably make this more efficient, but note that calling
+			// first.Hash() doesn't verify the tx contents, so MakePartSet() is
+			// currently necessary.
+			err = state.Validators.VerifyCommitLight(
+				chainID, firstID, first.Height, second.LastCommit)
+
+			if err == nil {
+				// validate the block before we persist it
+				err = bcR.blockExec.ValidateBlock(state, first)
+			}
+
+			if err != nil {
+				bcR.Logger.Error("Error in validation", "err", err)
+				peerID := bcR.pool.RedoRequest(first.Height)
+				peer := bcR.Switch.Peers().Get(peerID)
+				if peer != nil {
+					// NOTE: we've already removed the peer's request, but we
+					// still need to clean up the rest.
+					bcR.Switch.StopPeerForError(peer, fmt.Errorf("Reactor validation error: %v", err))
+				}
+				peerID2 := bcR.pool.RedoRequest(second.Height)
+				peer2 := bcR.Switch.Peers().Get(peerID2)
+				if peer2 != nil && peer2 != peer {
+					// NOTE: we've already removed the peer's request, but we
+					// still need to clean up the rest.
+					bcR.Switch.StopPeerForError(peer2, fmt.Errorf("Reactor validation error: %v", err))
+				}
+				continue FOR_LOOP
+			}
+
+			bcR.pool.PopRequest()
+
+			// TODO: batch saves so we dont persist to disk every block
+			bcR.store.SaveBlock(first, firstParts, second.LastCommit)
+
+			// TODO: same thing for app - but we would need a way to
+			// get the hash without persisting the state
+			state, _, err = bcR.blockExec.ApplyBlock(state, firstID, first)
+			if err != nil {
+				// TODO This is bad, are we zombie?
+				panic(fmt.Sprintf("Failed to process committed block (%d:%X): %v", first.Height, first.Hash(), err))
+			}
+			blocksSynced++
+
+			if blocksSynced%100 == 0 {
+				lastRate = 0.9*lastRate + 0.1*(100/time.Since(lastHundred).Seconds())
+				bcR.Logger.Info("Block Sync Rate", "height", bcR.pool.height,
+					"max_peer_height", bcR.pool.MaxPeerHeight(), "blocks/s", lastRate)
+				lastHundred = time.Now()
+			}
+
+			continue FOR_LOOP
+
+		case <-bcR.Quit():
+			break FOR_LOOP
+		}
+	}
+}
+
+// BroadcastStatusRequest broadcasts `BlockStore` base and height.
+func (bcR *Reactor) BroadcastStatusRequest() error {
+	bm, err := EncodeMsg(&bcproto.StatusRequest{})
+	if err != nil {
+		bcR.Logger.Error("could not convert msg to proto", "err", err)
+		return fmt.Errorf("could not convert msg to proto: %w", err)
+	}
+
+	bcR.Switch.Broadcast(BlocksyncChannel, bm)
+
+	return nil
+}

blocksync/reactor_test.go

@@ -0,0 +1,332 @@
+package blocksync
+
+import (
+	"fmt"
+	"os"
+	"sort"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+
+	dbm "github.com/tendermint/tm-db"
+
+	abci "github.com/tendermint/tendermint/abci/types"
+	cfg "github.com/tendermint/tendermint/config"
+	"github.com/tendermint/tendermint/libs/log"
+	mpmocks "github.com/tendermint/tendermint/mempool/mocks"
+	"github.com/tendermint/tendermint/p2p"
+	"github.com/tendermint/tendermint/proxy"
+	sm "github.com/tendermint/tendermint/state"
+	"github.com/tendermint/tendermint/store"
+	"github.com/tendermint/tendermint/types"
+	tmtime "github.com/tendermint/tendermint/types/time"
+)
+
+var config *cfg.Config
+
+func randGenesisDoc(numValidators int, randPower bool, minPower int64) (*types.GenesisDoc, []types.PrivValidator) {
+	validators := make([]types.GenesisValidator, numValidators)
+	privValidators := make([]types.PrivValidator, numValidators)
+	for i := 0; i < numValidators; i++ {
+		val, privVal := types.RandValidator(randPower, minPower)
+		validators[i] = types.GenesisValidator{
+			PubKey: val.PubKey,
+			Power:  val.VotingPower,
+		}
+		privValidators[i] = privVal
+	}
+	sort.Sort(types.PrivValidatorsByAddress(privValidators))
+
+	return &types.GenesisDoc{
+		GenesisTime: tmtime.Now(),
+		ChainID:     config.ChainID(),
+		Validators:  validators,
+	}, privValidators
+}
+
+type ReactorPair struct {
+	reactor *Reactor
+	app     proxy.AppConns
+}
+
+func newReactor(
+	t *testing.T,
+	logger log.Logger,
+	genDoc *types.GenesisDoc,
+	privVals []types.PrivValidator,
+	maxBlockHeight int64) ReactorPair {
+	if len(privVals) != 1 {
+		panic("only support one validator")
+	}
+
+	app := &testApp{}
+	cc := proxy.NewLocalClientCreator(app)
+	proxyApp := proxy.NewAppConns(cc, proxy.NopMetrics())
+	err := proxyApp.Start()
+	if err != nil {
+		panic(fmt.Errorf("error start app: %w", err))
+	}
+
+	blockDB := dbm.NewMemDB()
+	stateDB := dbm.NewMemDB()
+	stateStore := sm.NewStore(stateDB, sm.StoreOptions{
+		DiscardABCIResponses: false,
+	})
+	blockStore := store.NewBlockStore(blockDB)
+
+	state, err := stateStore.LoadFromDBOrGenesisDoc(genDoc)
+	if err != nil {
+		panic(fmt.Errorf("error constructing state from genesis file: %w", err))
+	}
+
+	mp := &mpmocks.Mempool{}
+	mp.On("Lock").Return()
+	mp.On("Unlock").Return()
+	mp.On("FlushAppConn", mock.Anything).Return(nil)
+	mp.On("Update",
+		mock.Anything,
+		mock.Anything,
+		mock.Anything,
+		mock.Anything,
+		mock.Anything,
+		mock.Anything).Return(nil)
+
+	// Make the Reactor itself.
+	// NOTE we have to create and commit the blocks first because
+	// pool.height is determined from the store.
+	fastSync := true
+	db := dbm.NewMemDB()
+	stateStore = sm.NewStore(db, sm.StoreOptions{
+		DiscardABCIResponses: false,
+	})
+	blockExec := sm.NewBlockExecutor(stateStore, log.TestingLogger(), proxyApp.Consensus(),
+		mp, sm.EmptyEvidencePool{})
+	if err = stateStore.Save(state); err != nil {
+		panic(err)
+	}
+
+	// let's add some blocks in
+	for blockHeight := int64(1); blockHeight <= maxBlockHeight; blockHeight++ {
+		lastCommit := types.NewCommit(blockHeight-1, 0, types.BlockID{}, nil)
+		if blockHeight > 1 {
+			lastBlockMeta := blockStore.LoadBlockMeta(blockHeight - 1)
+			lastBlock := blockStore.LoadBlock(blockHeight - 1)
+
+			vote, err := types.MakeVote(
+				lastBlock.Header.Height,
+				lastBlockMeta.BlockID,
+				state.Validators,
+				privVals[0],
+				lastBlock.Header.ChainID,
+				time.Now(),
+			)
+			if err != nil {
+				panic(err)
+			}
+			lastCommit = types.NewCommit(vote.Height, vote.Round,
+				lastBlockMeta.BlockID, []types.CommitSig{vote.CommitSig()})
+		}
+
+		thisBlock := state.MakeBlock(blockHeight, nil, lastCommit, nil, state.Validators.Proposer.Address)
+
+		thisParts, err := thisBlock.MakePartSet(types.BlockPartSizeBytes)
+		require.NoError(t, err)
+		blockID := types.BlockID{Hash: thisBlock.Hash(), PartSetHeader: thisParts.Header()}
+
+		state, _, err = blockExec.ApplyBlock(state, blockID, thisBlock)
+		if err != nil {
+			panic(fmt.Errorf("error apply block: %w", err))
+		}
+
+		blockStore.SaveBlock(thisBlock, thisParts, lastCommit)
+	}
+
+	bcReactor := NewReactor(state.Copy(), blockExec, blockStore, fastSync)
+	bcReactor.SetLogger(logger.With("module", "blockchain"))
+
+	return ReactorPair{bcReactor, proxyApp}
+}
+
+func TestNoBlockResponse(t *testing.T) {
+	config = cfg.ResetTestRoot("blockchain_reactor_test")
+	defer os.RemoveAll(config.RootDir)
+	genDoc, privVals := randGenesisDoc(1, false, 30)
+
+	maxBlockHeight := int64(65)
+
+	reactorPairs := make([]ReactorPair, 2)
+
+	reactorPairs[0] = newReactor(t, log.TestingLogger(), genDoc, privVals, maxBlockHeight)
+	reactorPairs[1] = newReactor(t, log.TestingLogger(), genDoc, privVals, 0)
+
+	p2p.MakeConnectedSwitches(config.P2P, 2, func(i int, s *p2p.Switch) *p2p.Switch {
+		s.AddReactor("BLOCKCHAIN", reactorPairs[i].reactor)
+		return s
+
+	}, p2p.Connect2Switches)
+
+	defer func() {
+		for _, r := range reactorPairs {
+			err := r.reactor.Stop()
+			require.NoError(t, err)
+			err = r.app.Stop()
+			require.NoError(t, err)
+		}
+	}()
+
+	tests := []struct {
+		height   int64
+		existent bool
+	}{
+		{maxBlockHeight + 2, false},
+		{10, true},
+		{1, true},
+		{100, false},
+	}
+
+	for {
+		if reactorPairs[1].reactor.pool.IsCaughtUp() {
+			break
+		}
+
+		time.Sleep(10 * time.Millisecond)
+	}
+
+	assert.Equal(t, maxBlockHeight, reactorPairs[0].reactor.store.Height())
+
+	for _, tt := range tests {
+		block := reactorPairs[1].reactor.store.LoadBlock(tt.height)
+		if tt.existent {
+			assert.True(t, block != nil)
+		} else {
+			assert.True(t, block == nil)
+		}
+	}
+}
+
+// NOTE: This is too hard to test without
+// an easy way to add test peer to switch
+// or without significant refactoring of the module.
+// Alternatively we could actually dial a TCP conn but
+// that seems extreme.
+func TestBadBlockStopsPeer(t *testing.T) {
+	config = cfg.ResetTestRoot("blockchain_reactor_test")
+	defer os.RemoveAll(config.RootDir)
+	genDoc, privVals := randGenesisDoc(1, false, 30)
+
+	maxBlockHeight := int64(148)
+
+	// Other chain needs a different validator set
+	otherGenDoc, otherPrivVals := randGenesisDoc(1, false, 30)
+	otherChain := newReactor(t, log.TestingLogger(), otherGenDoc, otherPrivVals, maxBlockHeight)
+
+	defer func() {
+		err := otherChain.reactor.Stop()
+		require.Error(t, err)
+		err = otherChain.app.Stop()
+		require.NoError(t, err)
+	}()
+
+	reactorPairs := make([]ReactorPair, 4)
+
+	reactorPairs[0] = newReactor(t, log.TestingLogger(), genDoc, privVals, maxBlockHeight)
+	reactorPairs[1] = newReactor(t, log.TestingLogger(), genDoc, privVals, 0)
+	reactorPairs[2] = newReactor(t, log.TestingLogger(), genDoc, privVals, 0)
+	reactorPairs[3] = newReactor(t, log.TestingLogger(), genDoc, privVals, 0)
+
+	switches := p2p.MakeConnectedSwitches(config.P2P, 4, func(i int, s *p2p.Switch) *p2p.Switch {
+		s.AddReactor("BLOCKCHAIN", reactorPairs[i].reactor)
+		return s
+
+	}, p2p.Connect2Switches)
+
+	defer func() {
+		for _, r := range reactorPairs {
+			err := r.reactor.Stop()
+			require.NoError(t, err)
+
+			err = r.app.Stop()
+			require.NoError(t, err)
+		}
+	}()
+
+	for {
+		time.Sleep(1 * time.Second)
+		caughtUp := true
+		for _, r := range reactorPairs {
+			if !r.reactor.pool.IsCaughtUp() {
+				caughtUp = false
+			}
+		}
+		if caughtUp {
+			break
+		}
+	}
+
+	// at this time, reactors[0-3] is the newest
+	assert.Equal(t, 3, reactorPairs[1].reactor.Switch.Peers().Size())
+
+	// Mark reactorPairs[3] as an invalid peer. Fiddling with .store without a mutex is a data
+	// race, but can't be easily avoided.
+	reactorPairs[3].reactor.store = otherChain.reactor.store
+
+	lastReactorPair := newReactor(t, log.TestingLogger(), genDoc, privVals, 0)
+	reactorPairs = append(reactorPairs, lastReactorPair)
+
+	switches = append(switches, p2p.MakeConnectedSwitches(config.P2P, 1, func(i int, s *p2p.Switch) *p2p.Switch {
+		s.AddReactor("BLOCKCHAIN", reactorPairs[len(reactorPairs)-1].reactor)
+		return s
+
+	}, p2p.Connect2Switches)...)
+
+	for i := 0; i < len(reactorPairs)-1; i++ {
+		p2p.Connect2Switches(switches, i, len(reactorPairs)-1)
+	}
+
+	for {
+		if lastReactorPair.reactor.pool.IsCaughtUp() || lastReactorPair.reactor.Switch.Peers().Size() == 0 {
+			break
+		}
+
+		time.Sleep(1 * time.Second)
+	}
+
+	assert.True(t, lastReactorPair.reactor.Switch.Peers().Size() < len(reactorPairs)-1)
+}
+
+type testApp struct {
+	abci.BaseApplication
+}
+
+var _ abci.Application = (*testApp)(nil)
+
+func (app *testApp) Info(req abci.RequestInfo) (resInfo abci.ResponseInfo) {
+	return abci.ResponseInfo{}
+}
+
+func (app *testApp) BeginBlock(req abci.RequestBeginBlock) abci.ResponseBeginBlock {
+	return abci.ResponseBeginBlock{}
+}
+
+func (app *testApp) EndBlock(req abci.RequestEndBlock) abci.ResponseEndBlock {
+	return abci.ResponseEndBlock{}
+}
+
+func (app *testApp) DeliverTx(req abci.RequestDeliverTx) abci.ResponseDeliverTx {
+	return abci.ResponseDeliverTx{Events: []abci.Event{}}
+}
+
+func (app *testApp) CheckTx(req abci.RequestCheckTx) abci.ResponseCheckTx {
+	return abci.ResponseCheckTx{}
+}
+
+func (app *testApp) Commit() abci.ResponseCommit {
+	return abci.ResponseCommit{}
+}
+
+func (app *testApp) Query(reqQuery abci.RequestQuery) (resQuery abci.ResponseQuery) {
+	return
+}

buf.gen.yaml

@@ -1,13 +1,9 @@
-# The version of the generation template.
-# Required.
-# The only currently-valid value is v1beta1.
-version: v1beta1
-
-# The plugins to run.
+version: v1
 plugins:
-  # The name of the plugin.
   - name: gogofaster
-    # The the relative output directory.
-    out: proto
-    # 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
+    out: ./proto/
+    opt:
+      - Mgoogle/protobuf/timestamp.proto=github.com/cosmos/gogoproto/types
+      - Mgoogle/protobuf/duration.proto=github.com/golang/protobuf/ptypes/duration
+      - plugins=grpc
+      - paths=source_relative