fix merge conflicts

Merge branch 'master' into callum/handshake
p2p: remove final shims from p2p package (#7136 )
2026-01-12 15:52:50 +00:00 · 2021-10-20 11:34:44 +02:00 · 2021-10-18 10:25:00 +02:00 · 2021-10-15 20:08:09 +00:00 · 2021-10-15 18:00:24 +00:00 · 2021-10-15 13:03:10 -04:00
430 changed files with 8384 additions and 25881 deletions
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -7,4 +7,4 @@
 # global owners are only requested if there isn't a more specific
 # codeowner specified below. For this reason, the global codeowners
 # are often repeated in package-level definitions.
-*       @alexanderbez @ebuchman @cmwaters @tessr @tychoish @williambanfield @creachadair
+*      @ebuchman @cmwaters @tychoish @williambanfield @creachadair
--- a/.github/mergify.yml
+++ b/.github/mergify.yml
@@ -6,7 +6,7 @@ pull_request_rules:
    actions:
      merge:
        method: squash
-        strict: true
+        strict: smart+fasttrack
        commit_message: title+body
  - name: backport patches to v0.34.x branch
    conditions:
@@ -16,3 +16,12 @@ pull_request_rules:
      backport:
        branches:
          - v0.34.x
+  - name: backport patches to v0.35.x branch
+    conditions:
+      - base=master
+      - label=S:backport-to-v0.35.x
+    actions:
+      backport:
+        branches:
+          - v0.35.x
+
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -4,7 +4,6 @@ on:
  push:
    paths:
      - "**.go"
-      - "!test/"
    branches:
      - master
      - release/**
@@ -47,7 +46,7 @@ jobs:
    steps:
      - uses: actions/setup-go@v2
        with:
-          go-version: "1.16"
+          go-version: "1.17"
      - uses: actions/checkout@v2.3.4
      - uses: technote-space/get-diff-action@v5
        with:
@@ -70,7 +69,7 @@ jobs:
    steps:
      - uses: actions/setup-go@v2
        with:
-          go-version: "1.16"
+          go-version: "1.17"
      - uses: actions/checkout@v2.3.4
      - uses: technote-space/get-diff-action@v5
        with:
@@ -86,10 +85,10 @@ jobs:
      - name: Set up Go
        uses: actions/setup-go@v2
        with:
-          go-version: 1.16
+          go-version: "1.17"
      - 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
+          cat pkgs.txt.part.${{ matrix.part }} | xargs go test -mod=readonly -timeout 8m -race -coverprofile=${{ matrix.part }}profile.out
        if: env.GIT_DIFF
      - uses: actions/upload-artifact@v2
        with:
@@ -125,7 +124,7 @@ jobs:
          name: "${{ github.sha }}-03-coverage"
        if: env.GIT_DIFF
      - run: |
-          cat ./*profile.out | grep -v "mode: atomic" >> coverage.txt
+          cat ./*profile.out | grep -v "mode: set" >> coverage.txt
        if: env.GIT_DIFF
      - uses: codecov/codecov-action@v2.1.0
        with:
--- a/.github/workflows/e2e-nightly-34x.yml
+++ b/.github/workflows/e2e-nightly-34x.yml
@@ -17,13 +17,13 @@ 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
        with:
-          go-version: '1.16'
+          go-version: '1.17'

      - uses: actions/checkout@v2.3.4
        with:
@@ -37,7 +37,7 @@ 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 ${{ matrix.group }}
        working-directory: test/e2e
--- a/.github/workflows/e2e-nightly-35x.yml
+++ b/.github/workflows/e2e-nightly-35x.yml
@@ -0,0 +1,76 @@
+# Runs randomly generated E2E testnets nightly on v0.35.x.
+
+# !! If you change something in this file, you probably want
+# to update the e2e-nightly-master workflow as well!
+
+name: e2e-nightly-35x
+on:
+  workflow_dispatch: # allow running workflow manually
+  schedule:
+    - cron: '0 2 * * *'
+
+jobs:
+  e2e-nightly-test:
+    # Run parallel jobs for the listed testnet groups (must match the
+    # ./build/generator -g flag)
+    strategy:
+      fail-fast: false
+      matrix:
+        p2p: ['legacy', 'new', 'hybrid']
+        group: ['00', '01', '02', '03']
+    runs-on: ubuntu-latest
+    timeout-minutes: 60
+    steps:
+      - uses: actions/setup-go@v2
+        with:
+          go-version: '1.17'
+
+      - uses: actions/checkout@v2.3.4
+        with:
+          ref: 'v0.35.x'
+
+      - name: Build
+        working-directory: test/e2e
+        # Run make jobs in parallel, since we can't run steps in parallel.
+        run: make -j2 docker generator runner tests
+
+      - name: Generate testnets
+        working-directory: test/e2e
+        # When changing -g, also change the matrix groups above
+        run: ./build/generator -g 4 -d networks/nightly/${{ matrix.p2p }} -p ${{ matrix.p2p }}
+
+      - name: Run ${{ matrix.p2p }} p2p testnets in group ${{ matrix.group }}
+        working-directory: test/e2e
+        run: ./run-multiple.sh networks/nightly/${{ matrix.p2p }}/*-group${{ matrix.group }}-*.toml
+
+  e2e-nightly-fail-2:
+    needs: e2e-nightly-test
+    if: ${{ failure() }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Notify Slack on failure
+        uses: rtCamp/action-slack-notify@12e36fc18b0689399306c2e0b3e0f2978b7f1ee7
+        env:
+          SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK }}
+          SLACK_CHANNEL: tendermint-internal
+          SLACK_USERNAME: Nightly E2E Tests
+          SLACK_ICON_EMOJI: ':skull:'
+          SLACK_COLOR: danger
+          SLACK_MESSAGE: Nightly E2E tests failed on v0.35.x
+          SLACK_FOOTER: ''
+
+  e2e-nightly-success: # may turn this off once they seem to pass consistently
+    needs: e2e-nightly-test
+    if: ${{ success() }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Notify Slack on success
+        uses: rtCamp/action-slack-notify@12e36fc18b0689399306c2e0b3e0f2978b7f1ee7
+        env:
+          SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK }}
+          SLACK_CHANNEL: tendermint-internal
+          SLACK_USERNAME: Nightly E2E Tests
+          SLACK_ICON_EMOJI: ':white_check_mark:'
+          SLACK_COLOR: good
+          SLACK_MESSAGE: Nightly E2E tests passed on v0.35.x
+          SLACK_FOOTER: ''
--- a/.github/workflows/e2e-nightly-master.yml
+++ b/.github/workflows/e2e-nightly-master.yml
@@ -10,20 +10,19 @@ on:
    - cron: '0 2 * * *'

 jobs:
-  e2e-nightly-test-2:
+  e2e-nightly-test:
    # Run parallel jobs for the listed testnet groups (must match the
    # ./build/generator -g flag)
    strategy:
      fail-fast: false
      matrix:
-        p2p: ['legacy', 'new', 'hybrid']
-        group: ['00', '01']
+        group: ['00', '01', '02', '03']
    runs-on: ubuntu-latest
    timeout-minutes: 60
    steps:
      - uses: actions/setup-go@v2
        with:
-          go-version: '1.16'
+          go-version: '1.17'

      - uses: actions/checkout@v2.3.4

@@ -35,14 +34,14 @@ jobs:
      - name: Generate testnets
        working-directory: test/e2e
        # When changing -g, also change the matrix groups above
-        run: ./build/generator -g 2 -d networks/nightly/${{ matrix.p2p }} -p ${{ matrix.p2p }}
+        run: ./build/generator -g 4 -d networks/nightly/

-      - name: Run ${{ matrix.p2p }} p2p testnets in group ${{ matrix.group }}
+      - name: Run ${{ matrix.p2p }} p2p testnets
        working-directory: test/e2e
-        run: ./run-multiple.sh networks/nightly/${{ matrix.p2p }}/*-group${{ matrix.group }}-*.toml
+        run: ./run-multiple.sh networks/nightly/*-group${{ matrix.group }}-*.toml

  e2e-nightly-fail-2:
-    needs: e2e-nightly-test-2
+    needs: e2e-nightly-test
    if: ${{ failure() }}
    runs-on: ubuntu-latest
    steps:
@@ -58,7 +57,7 @@ jobs:
          SLACK_FOOTER: ''

  e2e-nightly-success: # may turn this off once they seem to pass consistently
-    needs: e2e-nightly-test-2
+    needs: e2e-nightly-test
    if: ${{ success() }}
    runs-on: ubuntu-latest
    steps:
--- a/.github/workflows/e2e.yml
+++ b/.github/workflows/e2e.yml
@@ -16,7 +16,7 @@ jobs:
    steps:
      - uses: actions/setup-go@v2
        with:
-          go-version: '1.16'
+          go-version: '1.17'
      - uses: actions/checkout@v2.3.4
      - uses: technote-space/get-diff-action@v5
        with:
@@ -33,10 +33,6 @@ 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
--- a/.github/workflows/fuzz-nightly.yml
+++ b/.github/workflows/fuzz-nightly.yml
@@ -15,7 +15,7 @@ jobs:
    steps:
      - uses: actions/setup-go@v2
        with:
-          go-version: '1.16'
+          go-version: '1.17'

      - uses: actions/checkout@v2.3.4

--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -23,7 +23,7 @@ jobs:
      - uses: golangci/golangci-lint-action@v2.5.2
        with:
          # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.
-          version: v1.38
+          version: v1.42.1
          args: --timeout 10m
          github-token: ${{ secrets.github_token }}
        if: env.GIT_DIFF
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -18,7 +18,7 @@ jobs:

      - uses: actions/setup-go@v2
        with:
-          go-version: '1.16'
+          go-version: '1.17'

      - name: Build
        uses: goreleaser/goreleaser-action@v2
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -17,7 +17,7 @@ jobs:
    steps:
      - uses: actions/setup-go@v2
        with:
-          go-version: "1.16"
+          go-version: "1.17"
      - uses: actions/checkout@v2.3.4
      - uses: technote-space/get-diff-action@v5
        with:
@@ -49,7 +49,7 @@ jobs:
    steps:
      - uses: actions/setup-go@v2
        with:
-          go-version: "1.16"
+          go-version: "1.17"
      - uses: actions/checkout@v2.3.4
      - uses: technote-space/get-diff-action@v5
        with:
@@ -80,7 +80,7 @@ jobs:
    steps:
      - uses: actions/setup-go@v2
        with:
-          go-version: "1.16"
+          go-version: "1.17"
      - uses: actions/checkout@v2.3.4
      - uses: technote-space/get-diff-action@v5
        with:
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -13,12 +13,12 @@ linters:
    # - gochecknoinits
    # - gocognit
    - goconst
-    - gocritic
+    # - gocritic
    # - gocyclo
    # - godox
    - gofmt
    - goimports
-    - golint
+    - revive
    - gosec
    - gosimple
    - govet
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,30 @@
 # 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
+## v0.35.0-rc2
+
+September 27, 2021
+
+### BREAKING CHANGES
+
+- Go API
+
+  - [crypto/armor]: [\#6963](https://github.com/tendermint/tendermint/pull/6963) remove package which is unused, and based on
+    deprecated fundamentals. Downstream users should maintain this
+    library. (@tychoish)
+  - [state] [store] [proxy] [rpc/core]: [\#6937](https://github.com/tendermint/tendermint/pull/6937) move packages to
+    `internal` to prevent consumption of these internal APIs by
+    external users. (@tychoish)
+
+### FEATURES
+
+- [\#6982](https://github.com/tendermint/tendermint/pull/6982) tendermint binary has built-in suppport for running the e2e application (with state sync support) (@cmwaters).
+
+
+## v0.35.0-rc1
+
+September 8, 2021

 Special thanks to external contributors on this release: @JayT106, @bipulprasad, @alessio, @Yawning, @silasdavis,
@cuonglm, @tanyabouman, @JoeKash, @githubsands, @jeebster, @crypto-facs, @liamsi, and @gotjoshua
@@ -10,151 +32,169 @@ Special thanks to external contributors on this release: @JayT106, @bipulprasad,
 ### 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
+  - [pubsub/events] [\#6634](https://github.com/tendermint/tendermint/pull/6634) The `ResultEvent.Events` field is now of type `[]abci.Event` preserving event order instead of `map[string][]string`. (@alexanderbez)
+  - [config] [\#5598](https://github.com/tendermint/tendermint/pull/5598) The `test_fuzz` and `test_fuzz_config` P2P settings have been removed. (@erikgrinaker)
+  - [config] [\#5728](https://github.com/tendermint/tendermint/pull/5728) `fastsync.version = "v1"` is no longer supported (@melekes)
+  - [cli] [\#5772](https://github.com/tendermint/tendermint/pull/5772) `gen_node_key` prints JSON-encoded `NodeKey` rather than ID and does not save it to `node_key.json` (@melekes)
+  - [cli] [\#5777](https://github.com/tendermint/tendermint/pull/5777) use hyphen-case instead of snake_case for all cli commands and config parameters (@cmwaters)
+  - [rpc] [\#6019](https://github.com/tendermint/tendermint/pull/6019) standardise RPC errors and return the correct status code (@bipulprasad & @cmwaters)
+  - [rpc] [\#6168](https://github.com/tendermint/tendermint/pull/6168) Change default sorting to desc for `/tx_search` results (@melekes)
+  - [cli] [\#6282](https://github.com/tendermint/tendermint/pull/6282) User must specify the node mode when using `tendermint init` (@cmwaters)
+  - [state/indexer] [\#6382](https://github.com/tendermint/tendermint/pull/6382) reconstruct indexer, move txindex into the indexer package (@JayT106)
+  - [cli] [\#6372](https://github.com/tendermint/tendermint/pull/6372) Introduce `BootstrapPeers` as part of the new p2p stack. Peers to be connected on  startup (@cmwaters)
+  - [config] [\#6462](https://github.com/tendermint/tendermint/pull/6462) Move `PrivValidator` configuration out of `BaseConfig` into its own section. (@tychoish)
+  - [rpc] [\#6610](https://github.com/tendermint/tendermint/pull/6610) Add MaxPeerBlockHeight into /status rpc call (@JayT106)
+  - [blocksync/rpc] [\#6620](https://github.com/tendermint/tendermint/pull/6620) Add TotalSyncedTime & RemainingTime to SyncInfo in /status RPC  (@JayT106)
+  - [rpc/grpc] [\#6725](https://github.com/tendermint/tendermint/pull/6725) Mark gRPC in the RPC layer as deprecated.
+  - [blocksync/v2] [\#6730](https://github.com/tendermint/tendermint/pull/6730) Fast Sync v2 is deprecated, please use v0
  - [rpc] Add genesis_chunked method to support paginated and parallel fetching of large genesis documents.
-  - [rpc/jsonrpc/server] \#6785 `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)
+  - [rpc/jsonrpc/server] [\#6785](https://github.com/tendermint/tendermint/pull/6785) `Listen` function updated to take an `int` argument, `maxOpenConnections`, instead of an entire config object. (@williambanfield)
+  - [rpc] [\#6820](https://github.com/tendermint/tendermint/pull/6820) Update RPC methods to reflect changes in the p2p layer, disabling support for `UnsafeDialPeers` and `UnsafeDialPeers` when used with the new p2p layer, and changing the response format of the peer list in `NetInfo` for all users.
+  - [cli] [\#6854](https://github.com/tendermint/tendermint/pull/6854) Remove deprecated snake case commands. (@tychoish)

 - 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`.
+  - [ABCI] [\#6408](https://github.com/tendermint/tendermint/pull/6408) Change the `key` and `value` fields from `[]byte` to `string` in the `EventAttribute` type. (@alexanderbez)
+  - [ABCI] [\#5447](https://github.com/tendermint/tendermint/pull/5447) Remove `SetOption` method from `ABCI.Client` interface
+  - [ABCI] [\#5447](https://github.com/tendermint/tendermint/pull/5447) Reset `Oneof` indexes for  `Request` and `Response`.
+  - [ABCI] [\#5818](https://github.com/tendermint/tendermint/pull/5818) Use protoio for msg length delimitation. Migrates from int64 to uint64 length delimiters.
+  - [ABCI] [\#3546](https://github.com/tendermint/tendermint/pull/3546) Add `mempool_error` field to `ResponseCheckTx`. This field will contain an error string if Tendermint encountered an error while adding a transaction to the mempool. (@williambanfield)
+  - [Version] [\#6494](https://github.com/tendermint/tendermint/pull/6494) `TMCoreSemVer` has been renamed to `TMVersion`.
 	- It is not required any longer to set ldflags to set version strings
-  - [abci/counter] \#6684 Delete counter example app
+  - [abci/counter] [\#6684](https://github.com/tendermint/tendermint/pull/6684) Delete counter example app

 - 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)
+  - [pubsub] [\#6634](https://github.com/tendermint/tendermint/pull/6634) The `Query#Matches` method along with other pubsub methods, now accepts a `[]abci.Event` instead of `map[string][]string`. (@alexanderbez)
+  - [p2p] [\#6618](https://github.com/tendermint/tendermint/pull/6618) [\#6583](https://github.com/tendermint/tendermint/pull/6583) Move `p2p.NodeInfo`, `p2p.NodeID` and `p2p.NetAddress` into `types` to support use in external packages. (@tychoish)
+  - [node] [\#6540](https://github.com/tendermint/tendermint/pull/6540) Reduce surface area of the `node` package by making most of the implementation details private. (@tychoish)
+  - [p2p] [\#6547](https://github.com/tendermint/tendermint/pull/6547) Move the entire `p2p` package and all reactor implementations into `internal`.  (@tychoish)
+  - [libs/log] [\#6534](https://github.com/tendermint/tendermint/pull/6534) Remove the existing custom Tendermint logger backed by go-kit. The logging interface, `Logger`, remains. Tendermint still provides a default logger backed by the performant zerolog logger. (@alexanderbez)
+  - [libs/time] [\#6495](https://github.com/tendermint/tendermint/pull/6495) Move types/time to libs/time to improve consistency. (@tychoish)
+  - [mempool] [\#6529](https://github.com/tendermint/tendermint/pull/6529) The `Context` field has been removed from the `TxInfo` type. `CheckTx` now requires a `Context` argument. (@alexanderbez)
+  - [abci/client, proxy] [\#5673](https://github.com/tendermint/tendermint/pull/5673) `Async` funcs return an error, `Sync` and `Async` funcs accept `context.Context` (@melekes)
  - [p2p] Remove unused function `MakePoWTarget`. (@erikgrinaker)
-  - [libs/bits] \#5720 Validate `BitArray` in `FromProto`, which now returns an error (@melekes)
+  - [libs/bits] [\#5720](https://github.com/tendermint/tendermint/pull/5720) Validate `BitArray` in `FromProto`, which now returns an error (@melekes)
  - [proto/p2p] Rename `DefaultNodeInfo` and `DefaultNodeInfoOther` to `NodeInfo` and `NodeInfoOther` (@erikgrinaker)
  - [proto/p2p] Rename `NodeInfo.default_node_id` to `node_id` (@erikgrinaker)
  - [libs/os] Kill() and {Must,}{Read,Write}File() functions have been removed. (@alessio)
-  - [store] \#5848 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`.
+  - [store] [\#5848](https://github.com/tendermint/tendermint/pull/5848) Remove block store state in favor of using the db iterators directly (@cmwaters)
+  - [state] [\#5864](https://github.com/tendermint/tendermint/pull/5864) Use an iterator when pruning state (@cmwaters)
+  - [types] [\#6023](https://github.com/tendermint/tendermint/pull/6023) Remove `tm2pb.Header`, `tm2pb.BlockID`, `tm2pb.PartSetHeader` and `tm2pb.NewValidatorUpdate`.
 	- Each of the above types has a `ToProto` and `FromProto` method or function which replaced this logic.
-  - [light] \#6054 Move `MaxRetryAttempt` option from client to provider.
+  - [light] [\#6054](https://github.com/tendermint/tendermint/pull/6054) Move `MaxRetryAttempt` option from client to provider.
 	- `NewWithOptions` now sets the max retry attempts and timeouts (@cmwaters)
-  - [all] \#6077 Change spelling from British English to American (@cmwaters)
+  - [all] [\#6077](https://github.com/tendermint/tendermint/pull/6077) Change spelling from British English to American (@cmwaters)
 	- Rename "Subscription.Cancelled()" to "Subscription.Canceled()" in libs/pubsub
 	- Rename "behaviour" pkg to "behavior" and internalized it in blocksync v2
-  - [rpc/client/http] \#6176 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.
+  - [rpc/client/http] [\#6176](https://github.com/tendermint/tendermint/pull/6176) Remove `endpoint` arg from `New`, `NewWithTimeout` and `NewWithClient` (@melekes)
+  - [rpc/client/http] [\#6176](https://github.com/tendermint/tendermint/pull/6176) Unexpose `WSEvents` (@melekes)
+  - [rpc/jsonrpc/client/ws_client] [\#6176](https://github.com/tendermint/tendermint/pull/6176) `NewWS` no longer accepts options (use `NewWSWithOptions` and `OnReconnect` funcs to configure the client) (@melekes)
+  - [internal/libs] [\#6366](https://github.com/tendermint/tendermint/pull/6366) Move `autofile`, `clist`,`fail`,`flowrate`, `protoio`, `sync`, `tempfile`, `test` and `timer` lib packages to an internal folder
+  - [libs/rand] [\#6364](https://github.com/tendermint/tendermint/pull/6364) Remove most of libs/rand in favour of standard lib's `math/rand` (@liamsi)
+  - [mempool] [\#6466](https://github.com/tendermint/tendermint/pull/6466) The original mempool reactor has been versioned as `v0` and moved to a sub-package under the root `mempool` package.
 	Some core types have been kept in the `mempool` package such as `TxCache` and it's implementations, the `Mempool` interface itself
 	and `TxInfo`. (@alexanderbez)
-  - [crypto/sr25519] \#6526 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)
+  - [crypto/sr25519] [\#6526](https://github.com/tendermint/tendermint/pull/6526) Do not re-execute the Ed25519-style key derivation step when doing signing and verification.  The derivation is now done once and only once.  This breaks `sr25519.GenPrivKeyFromSecret` output compatibility. (@Yawning)
+  - [types] [\#6627](https://github.com/tendermint/tendermint/pull/6627) Move `NodeKey` to types to make the type public.
+  - [config] [\#6627](https://github.com/tendermint/tendermint/pull/6627) Extend `config` to contain methods `LoadNodeKeyID` and `LoadorGenNodeKeyID`
+  - [blocksync] [\#6755](https://github.com/tendermint/tendermint/pull/6755) Rename `FastSync` and `Blockchain` package to `BlockSync` (@cmwaters)

 - 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)
+  - [store/state/evidence/light] [\#5771](https://github.com/tendermint/tendermint/pull/5771) Use an order-preserving varint key encoding (@cmwaters)
+  - [mempool] [\#6396](https://github.com/tendermint/tendermint/pull/6396) Remove mempool's write ahead log (WAL), (previously unused by the tendermint code). (@tychoish)
+  - [state] [\#6541](https://github.com/tendermint/tendermint/pull/6541) Move pruneBlocks from consensus/state to state/execution. (@JayT106)

 - Tooling
-  - [tools] \#6498 Set OS home dir to instead of the hardcoded PATH. (@JayT106)
-  - [cli/indexer] \#6676 Reindex events command line tooling. (@JayT106)
+  - [tools] [\#6498](https://github.com/tendermint/tendermint/pull/6498) Set OS home dir to instead of the hardcoded PATH. (@JayT106)
+  - [cli/indexer] [\#6676](https://github.com/tendermint/tendermint/pull/6676) Reindex events command line tooling. (@JayT106)

 ### 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
+- [rpc] [\#6329](https://github.com/tendermint/tendermint/pull/6329) Don't cap page size in unsafe mode (@gotjoshua, @cmwaters)
+- [pex] [\#6305](https://github.com/tendermint/tendermint/pull/6305) v2 pex reactor with backwards compatability. Introduces two new pex messages to
  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)
+- [crypto] [\#6376](https://github.com/tendermint/tendermint/pull/6376) Enable sr25519 as a validator key type
+- [mempool] [\#6466](https://github.com/tendermint/tendermint/pull/6466) Introduction of a prioritized mempool. (@alexanderbez)
  - `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)
+- [config/indexer] [\#6411](https://github.com/tendermint/tendermint/pull/6411) Introduce support for custom event indexing data sources, specifically PostgreSQL. (@JayT106)
+- [blocksync/event] [\#6619](https://github.com/tendermint/tendermint/pull/6619) Emit blocksync status event when switching consensus/blocksync (@JayT106)
+- [statesync/event] [\#6700](https://github.com/tendermint/tendermint/pull/6700) Emit statesync status start/end event (@JayT106)
+- [inspect] [\#6785](https://github.com/tendermint/tendermint/pull/6785) Add a new `inspect` command for introspecting the state and block store of a crashed tendermint node. (@williambanfield)

 ### 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)
+- [libs/log] Console log formatting changes as a result of [\#6534](https://github.com/tendermint/tendermint/pull/6534) and [\#6589](https://github.com/tendermint/tendermint/pull/6589). (@tychoish)
+- [statesync] [\#6566](https://github.com/tendermint/tendermint/pull/6566) Allow state sync fetchers and request timeout to be configurable. (@alexanderbez)
+- [types] [\#6478](https://github.com/tendermint/tendermint/pull/6478) Add `block_id` to `newblock` event (@jeebster)
+- [crypto/ed25519] [\#5632](https://github.com/tendermint/tendermint/pull/5632) Adopt zip215 `ed25519` verification. (@marbar3778)
+- [crypto/ed25519] [\#6526](https://github.com/tendermint/tendermint/pull/6526) Use [curve25519-voi](https://github.com/oasisprotocol/curve25519-voi) for `ed25519` signing and verification. (@Yawning)
+- [crypto/sr25519] [\#6526](https://github.com/tendermint/tendermint/pull/6526) Use [curve25519-voi](https://github.com/oasisprotocol/curve25519-voi) for `sr25519` signing and verification. (@Yawning)
+- [privval] [\#5603](https://github.com/tendermint/tendermint/pull/5603) Add `--key` to `init`, `gen_validator`, `testnet` & `unsafe_reset_priv_validator` for use in generating `secp256k1` keys.
+- [privval] [\#5725](https://github.com/tendermint/tendermint/pull/5725) Add gRPC support to private validator.
+- [privval] [\#5876](https://github.com/tendermint/tendermint/pull/5876) `tendermint show-validator` will query the remote signer if gRPC is being used (@marbar3778)
+- [abci/client] [\#5673](https://github.com/tendermint/tendermint/pull/5673) `Async` requests return an error if queue is full (@melekes)
+- [mempool] [\#5673](https://github.com/tendermint/tendermint/pull/5673) Cancel `CheckTx` requests if RPC client disconnects or times out (@melekes)
+- [abci] [\#5706](https://github.com/tendermint/tendermint/pull/5706) Added `AbciVersion` to `RequestInfo` allowing applications to check ABCI version when connecting to Tendermint. (@marbar3778)
+- [blocksync/v1] [\#5728](https://github.com/tendermint/tendermint/pull/5728) Remove blocksync v1 (@melekes)
+- [blocksync/v0] [\#5741](https://github.com/tendermint/tendermint/pull/5741) Relax termination conditions and increase sync timeout (@melekes)
+- [cli] [\#5772](https://github.com/tendermint/tendermint/pull/5772) `gen_node_key` output now contains node ID (`id` field) (@melekes)
+- [blocksync/v2] [\#5774](https://github.com/tendermint/tendermint/pull/5774) Send status request when new peer joins (@melekes)
+- [store] [\#5888](https://github.com/tendermint/tendermint/pull/5888) store.SaveBlock saves using batches instead of transactions for now to improve ACID properties. This is a quick fix for underlying issues around tm-db and ACID guarantees. (@githubsands)
+- [consensus] [\#5987](https://github.com/tendermint/tendermint/pull/5987) and [\#5792](https://github.com/tendermint/tendermint/pull/5792) Remove the `time_iota_ms` consensus parameter. Merge `tmproto.ConsensusParams` and `abci.ConsensusParams`. (@marbar3778, @valardragon)
+- [types] [\#5994](https://github.com/tendermint/tendermint/pull/5994) Reduce the use of protobuf types in core logic. (@marbar3778)
  - `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.
+- [rpc/client/http] [\#6163](https://github.com/tendermint/tendermint/pull/6163) Do not drop events even if the `out` channel is full (@melekes)
+- [node] [\#6059](https://github.com/tendermint/tendermint/pull/6059) Validate and complete genesis doc before saving to state store (@silasdavis)
+- [state] [\#6067](https://github.com/tendermint/tendermint/pull/6067) Batch save state data (@githubsands & @cmwaters)
+- [crypto] [\#6120](https://github.com/tendermint/tendermint/pull/6120) Implement batch verification interface for ed25519 and sr25519. (@marbar3778)
+- [types] [\#6120](https://github.com/tendermint/tendermint/pull/6120) use batch verification for verifying commits signatures.
  - 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 `$HOME/.some/test/dir` with `t.TempDir` (@tanyabouman)
+- [privval/file] [\#6185](https://github.com/tendermint/tendermint/pull/6185) Return error on `LoadFilePV`, `LoadFilePVEmptyState`. Allows for better programmatic control of Tendermint.
+- [privval] [\#6240](https://github.com/tendermint/tendermint/pull/6240) Add `context.Context` to privval interface.
+- [rpc] [\#6265](https://github.com/tendermint/tendermint/pull/6265) set cache control in http-rpc response header (@JayT106)
+- [statesync] [\#6378](https://github.com/tendermint/tendermint/pull/6378) Retry requests for snapshots and add a minimum discovery time (5s) for new snapshots.
+- [node/state] [\#6370](https://github.com/tendermint/tendermint/pull/6370) graceful shutdown in the consensus reactor (@JayT106)
+- [crypto/merkle] [\#6443](https://github.com/tendermint/tendermint/pull/6443) Improve HashAlternatives performance (@cuonglm)
+- [crypto/merkle] [\#6513](https://github.com/tendermint/tendermint/pull/6513) Optimize HashAlternatives (@marbar3778)
+- [p2p/pex] [\#6509](https://github.com/tendermint/tendermint/pull/6509) Improve addrBook.hash performance (@cuonglm)
+- [consensus/metrics] [\#6549](https://github.com/tendermint/tendermint/pull/6549) Change block_size gauge to a histogram for better observability over time (@marbar3778)
+- [statesync] [\#6587](https://github.com/tendermint/tendermint/pull/6587) Increase chunk priority and re-request chunks that don't arrive (@cmwaters)
+- [state/privval] [\#6578](https://github.com/tendermint/tendermint/pull/6578) No GetPubKey retry beyond the proposal/voting window (@JayT106)
+- [rpc] [\#6615](https://github.com/tendermint/tendermint/pull/6615) Add TotalGasUsed to block_results response (@crypto-facs)
+- [cmd/tendermint/commands] [\#6623](https://github.com/tendermint/tendermint/pull/6623) replace `$HOME/.some/test/dir` with `t.TempDir` (@tanyabouman)
 - [statesync] \6807 Implement P2P state provider as an alternative to RPC (@cmwaters)

 ### 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)
+- [privval] [\#5638](https://github.com/tendermint/tendermint/pull/5638) Increase read/write timeout to 5s and calculate ping interval based on it (@JoeKash)
+- [evidence] [\#6375](https://github.com/tendermint/tendermint/pull/6375) Fix bug with inconsistent LightClientAttackEvidence hashing (cmwaters)
+- [rpc] [\#6507](https://github.com/tendermint/tendermint/pull/6507) Ensure RPC client can handle URLs without ports (@JayT106)
+- [statesync] [\#6463](https://github.com/tendermint/tendermint/pull/6463) Adds Reverse Sync feature to fetch historical light blocks after state sync in order to verify any evidence (@cmwaters)
+- [blocksync] [\#6590](https://github.com/tendermint/tendermint/pull/6590) Update the metrics during blocksync (@JayT106)
+
+## 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

--- a/CHANGELOG_PENDING.md
+++ b/CHANGELOG_PENDING.md
@@ -1,26 +1,42 @@
 # Unreleased Changes

+Friendly reminder: We have a [bug bounty program](https://hackerone.com/cosmos).
+
 ## vX.X

-Special thanks to external contributors on this release:
+Month, DD, YYYY

-Friendly reminder: We have a [bug bounty program](https://hackerone.com/tendermint).
+Special thanks to external contributors on this release:

 ### BREAKING CHANGES

 - CLI/RPC/Config

+  - [rpc] Remove the deprecated gRPC interface to the RPC service (@creachadair).
+
 - Apps

 - P2P Protocol

+  - [p2p] \#7035 Remove legacy P2P routing implementation and
+    associated configuration options (@tychoish)
+
 - Go API

+  - [blocksync] \#7046 Remove v2 implementation of the blocksync
+    service and recactor, which was disabled in the previous release
+    (@tychoish)
+  - [p2p] \#7064 Remove WDRR queue implementation. (@tychoish)
+
 - Blockchain Protocol

 ### FEATURES

+- [cli] [#7033](https://github.com/tendermint/tendermint/pull/7033) Add a `rollback` command to rollback to the previous tendermint state in the event of non-determinstic app hash or reverting an upgrade.
+- [mempool, rpc] \#7041  Add removeTx operation to the RPC layer. (@tychoish)
+
 ### IMPROVEMENTS

 ### BUG FIXES

+- fix: assignment copies lock value in `BitArray.UnmarshalJSON()` (@lklimek)
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -227,141 +227,6 @@ Fixes #nnnn

 Each PR should have one commit once it lands on `master`; this can be accomplished by using the "squash and merge" button on Github. Be sure to edit your commit message, though!

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

 ### Unit tests
--- a/16
+++ b/16
@@ -89,7 +89,7 @@ proto-gen:
 .PHONY: proto-gen

 proto-lint:
-	@$(DOCKER_BUF) check lint --error-format=json
+	@$(DOCKER_BUF) lint --error-format=json
 .PHONY: proto-lint

 proto-format:
@@ -98,11 +98,11 @@ proto-format:
 .PHONY: proto-format

 proto-check-breaking:
-	@$(DOCKER_BUF) check breaking --against-input .git#branch=master
+	@$(DOCKER_BUF) breaking --against .git#branch=master
 .PHONY: proto-check-breaking

 proto-check-breaking-ci:
-	@$(DOCKER_BUF) check breaking --against-input $(HTTPS_GIT)#branch=master
+	@$(DOCKER_BUF) breaking --against $(HTTPS_GIT)#branch=master
 .PHONY: proto-check-breaking-ci

 ###############################################################################
@@ -131,11 +131,11 @@ generate_test_cert:
 	# generate server cerificate
 	@certstrap request-cert -cn server -ip 127.0.0.1
 	# self-sign server cerificate with rootCA
-	@certstrap sign server --CA "root CA" 
+	@certstrap sign server --CA "root CA"
 	# generate client cerificate
 	@certstrap request-cert -cn client -ip 127.0.0.1
 	# self-sign client cerificate with rootCA
-	@certstrap sign client --CA "root CA" 
+	@certstrap sign client --CA "root CA"
 .PHONY: generate_test_cert

 ###############################################################################
@@ -214,7 +214,7 @@ DESTINATION = ./index.html.md
 build-docs:
 	@cd docs && \
 	while read -r branch path_prefix; do \
-		(git checkout $${branch} && npm install && VUEPRESS_BASE="/$${path_prefix}/" npm run build) ; \
+		(git checkout $${branch} && npm ci && VUEPRESS_BASE="/$${path_prefix}/" npm run build) ; \
 		mkdir -p ~/output/$${path_prefix} ; \
 		cp -r .vuepress/dist/* ~/output/$${path_prefix}/ ; \
 		cp ~/output/$${path_prefix}/index.html ~/output ; \
@@ -227,13 +227,13 @@ build-docs:

 build-docker: build-linux
 	cp $(BUILDDIR)/tendermint DOCKER/tendermint
-	docker build --label=tendermint --tag="tendermint/tendermint" DOCKER
+	docker build --label=tendermint --tag="tendermint/tendermint" -f DOCKER/Dockerfile .
 	rm -rf DOCKER/tendermint
 .PHONY: build-docker


 ###############################################################################
-###                       Mocks 											###
+###                                Mocks                                    ###
 ###############################################################################

 mockery:
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@ Or [Blockchain](<https://en.wikipedia.org/wiki/Blockchain_(database)>), for shor
 [![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)
+[![Discord chat](https://img.shields.io/discord/669268347736686612.svg)](https://discord.gg/cosmosnetwork)
 [![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)
@@ -33,7 +33,9 @@ Tendermint has been in the production of private and public environments, most n
 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).
+contact us [over email](mailto:hello@interchain.berlin) or [join the chat](https://discord.gg/cosmosnetwork).
+
+More on how releases are conducted can be found [here](./RELEASES.md).

 ## Security

@@ -112,6 +114,8 @@ in [UPGRADING.md](./UPGRADING.md).

 ### Tendermint Core

+We keep a public up-to-date version of our roadmap [here](./docs/roadmap/roadmap.md)
+
 For details about the blockchain data structures and the p2p protocols, see the
 [Tendermint specification](https://docs.tendermint.com/master/spec/).

--- a/RELEASES.md
+++ b/RELEASES.md
@@ -0,0 +1,161 @@
+# Releases
+
+Tendermint uses [semantic versioning](https://semver.org/) with each release following
+a `vX.Y.Z` format. The `master` branch is used for active development and thus it's
+advisable not to build against it.
+
+The latest changes are always initially merged into `master`.
+Releases are specified using tags and are built from long-lived "backport" branches
+that are cut from `master` when the release process begins.
+Each release "line" (e.g. 0.34 or 0.33) has its own long-lived backport branch,
+and the backport branches have names like `v0.34.x` or `v0.33.x`
+(literally, `x`; it is not a placeholder in this case). Tendermint only
+maintains the last two releases at a time (the oldest release is predominantly
+just security patches).
+
+## Backporting
+
+As non-breaking changes land on `master`, they should also be backported
+to these backport branches.
+
+We use Mergify's [backport feature](https://mergify.io/features/backports) to automatically backport
+to the needed branch. There should be a label for any backport branch that you'll be targeting.
+To notify the bot to backport a pull request, mark the pull request with the label corresponding
+to the correct backport branch. For example, to backport to v0.35.x, add the label `S:backport-to-v0.35.x`.
+Once the original pull request is merged, the bot will try to cherry-pick the pull request
+to the backport branch. If the bot fails to backport, it will open a pull request.
+The author of the original pull request is responsible for solving the conflicts and
+merging the pull request.
+
+### Creating a backport branch
+
+If this is the first release candidate for a major release, you get to have the honor of creating
+the backport branch!
+
+Note that, after creating the backport branch, you'll also need to update the
+tags on `master` so that `go mod` is able to order the branches correctly. You
+should tag `master` with a "dev" tag that is "greater than" the backport
+branches tags. See [#6072](https://github.com/tendermint/tendermint/pull/6072)
+for more context.
+
+In the following example, we'll assume that we're making a backport branch for
+the 0.35.x line.
+
+1. Start on `master`
+2. Create and push the backport branch:
+   `git checkout -b v0.35.x; git push origin 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 -m "Development base for Tendermint v0.36."; git push origin v0.36.0-dev`
+4. Create a new workflow (still on master) to run e2e nightlies for the new backport branch.
+   (See https://github.com/tendermint/tendermint/blob/master/.github/workflows/e2e-nightly-master.yml
+   for an example.)
+5. Add a new section to the Mergify config (`.github/mergify.yml`) to enable the
+   backport bot to work on this branch, and add a corresponding `S:backport-to-v0.35.x`
+   [label](https://github.com/tendermint/tendermint/labels) so the bot can be triggered.
+
+## Release candidates
+
+Before creating an official release, especially a major release, we may want to create a
+release candidate (RC) for our friends and partners to test out. We use git tags to
+create RCs, and we build them off of backport branches.
+
+Tags for RCs should follow the "standard" release naming conventions, with `-rcX` at the end
+(for example, `v0.35.0-rc0`).
+
+(Note that branches and tags _cannot_ have the same names, so it's important that these branches
+have distinct names from the tags/release names.)
+
+If this is the first RC for a major release, you'll have to make a new backport branch (see above).
+Otherwise:
+
+1. Start from the backport branch (e.g. `v0.35.x`).
+2. Run the integration tests and the e2e nightlies
+   (which can be triggered from the Github UI;
+   e.g., https://github.com/tendermint/tendermint/actions/workflows/e2e-nightly-34x.yml).
+3. Prepare the changelog:
+   - Move the changes included in `CHANGELOG_PENDING.md` into `CHANGELOG.md`. Each RC should have
+     it's own changelog section. These will be squashed when the final candidate is released.
+   - Run `python ./scripts/linkify_changelog.py CHANGELOG.md` to add links for
+     all PRs
+   - Ensure that `UPGRADING.md` is up-to-date and includes notes on any breaking changes
+      or other upgrading flows.
+   - Bump TMVersionDefault version in  `version.go`
+   - Bump P2P and block protocol versions in  `version.go`, if necessary.
+     Check the changelog for breaking changes in these components.
+   - Bump ABCI protocol version in `version.go`, if necessary
+4. Open a PR with these changes against the backport branch.
+5. Once these changes have landed on the backport branch, be sure to pull them back down locally.
+6. Once you have the changes locally, create the new tag, specifying a name and a tag "message":
+   `git tag -a v0.35.0-rc0 -m "Release Candidate v0.35.0-rc0`
+7. Push the tag back up to origin:
+   `git push origin v0.35.0-rc0`
+   Now the tag should be available on the repo's releases page.
+8. Future RCs will continue to be built off of this branch.
+
+Note that this process should only be used for "true" RCs--
+release candidates that, if successful, will be the next release.
+For more experimental "RCs," create a new, short-lived branch and tag that instead.
+
+## Major release
+
+This major release process assumes that this release was preceded by release candidates.
+If there were no release candidates, begin by creating a backport branch, as described above.
+
+1. Start on the backport branch (e.g. `v0.35.x`)
+2. Run integration tests (`make test_integrations`) and the e2e nightlies.
+3. Prepare the release:
+   - "Squash" changes from the changelog entries for the RCs into a single entry,
+      and add all changes included in `CHANGELOG_PENDING.md`.
+      (Squashing includes both combining all entries, as well as removing or simplifying
+      any intra-RC changes. It may also help to alphabetize the entries by package name.)
+   - Run `python ./scripts/linkify_changelog.py CHANGELOG.md` to add links for
+     all PRs
+   - Ensure that `UPGRADING.md` is up-to-date and includes notes on any breaking changes
+      or other upgrading flows.
+   - Bump TMVersionDefault version in  `version.go`
+   - Bump P2P and block protocol versions in  `version.go`, if necessary
+   - Bump ABCI protocol version in `version.go`, if necessary
+4. Open a PR with these changes against the backport branch.
+5. Once these changes are on the backport branch, push a tag with prepared release details.
+   This will trigger the actual release `v0.35.0`.
+   - `git tag -a v0.35.0 -m 'Release v0.35.0'`
+   - `git push origin v0.35.0`
+6. Make sure that `master` is updated with the latest `CHANGELOG.md`, `CHANGELOG_PENDING.md`, and `UPGRADING.md`.
+7. Add the release to the documentation site generator config (see
+   [DOCS_README.md](./docs/DOCS_README.md) for more details). In summary:
+   - Start on branch `master`.
+   - Add a new line at the bottom of [`docs/versions`](./docs/versions) to
+     ensure the newest release is the default for the landing page.
+   - Add a new entry to `themeConfig.versions` in
+     [`docs/.vuepress/config.js`](./docs/.vuepress/config.js) to include the
+	 release in the dropdown versions menu.
+
+## Minor release (point releases)
+
+Minor releases are done differently from major releases: They are built off of
+long-lived backport branches, rather than from master.  As non-breaking changes
+land on `master`, they should also be backported into these backport branches.
+
+Minor releases don't have release candidates by default, although any tricky
+changes may merit a release candidate.
+
+To create a minor release:
+
+1. Checkout the long-lived backport branch: `git checkout v0.35.x`
+2. Run integration tests (`make test_integrations`) and the nightlies.
+3. Check out a new branch and prepare the release:
+   - Copy `CHANGELOG_PENDING.md` to top of `CHANGELOG.md`
+   - Run `python ./scripts/linkify_changelog.py CHANGELOG.md` to add links for all issues
+   - Run `bash ./scripts/authors.sh` to get a list of authors since the latest release, and add the GitHub aliases of external contributors to the top of the CHANGELOG. To lookup an alias from an email, try `bash ./scripts/authors.sh <email>`
+   - Reset the `CHANGELOG_PENDING.md`
+   - Bump the TMDefaultVersion in `version.go`
+   - Bump the ABCI version number, if necessary.
+     (Note that ABCI follows semver, and that ABCI versions are the only versions
+     which can change during minor releases, and only field additions are valid minor changes.)
+4. Open a PR with these changes that will land them back on `v0.35.x`
+5. Once this change has landed on the backport branch, make sure to pull it locally, then push a tag.
+   - `git tag -a v0.35.1 -m 'Release v0.35.1'`
+   - `git push origin v0.35.1`
+6. Create a pull request back to master with the CHANGELOG & version changes from the latest release.
+   - Remove all `R:minor` labels from the pull requests that were included in the release.
+   - Do not merge the backport branch into master.
--- a/abci/client/client.go
+++ b/abci/client/client.go
@@ -1,4 +1,4 @@
-package abcicli
+package abciclient

 import (
 	"context"
@@ -87,7 +87,7 @@ type ReqRes struct {
 	*sync.WaitGroup
 	*types.Response // Not set atomically, so be sure to use WaitGroup.

-	mtx  tmsync.RWMutex
+	mtx  tmsync.Mutex
 	done bool                  // Gets set to true once *after* WaitGroup.Done().
 	cb   func(*types.Response) // A single callback that may be set.
 }
@@ -137,16 +137,16 @@ 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()
+	r.mtx.Lock()
+	defer r.mtx.Unlock()
 	return r.cb
 }

 // SetDone marks the ReqRes object as done.
 func (r *ReqRes) SetDone() {
 	r.mtx.Lock()
-	defer r.mtx.Unlock()
 	r.done = true
+	r.mtx.Unlock()
 }

 func waitGroup1() (wg *sync.WaitGroup) {
--- a/abci/client/creators.go
+++ b/abci/client/creators.go
@@ -0,0 +1,35 @@
+package abciclient
+
+import (
+	"fmt"
+
+	"github.com/tendermint/tendermint/abci/types"
+	tmsync "github.com/tendermint/tendermint/internal/libs/sync"
+)
+
+// Creator creates new ABCI clients.
+type Creator func() (Client, error)
+
+// NewLocalCreator returns a Creator for the given app,
+// which will be running locally.
+func NewLocalCreator(app types.Application) Creator {
+	mtx := new(tmsync.Mutex)
+
+	return func() (Client, error) {
+		return NewLocalClient(mtx, app), nil
+	}
+}
+
+// NewRemoteCreator returns a Creator for the given address (e.g.
+// "192.168.0.1") and transport (e.g. "tcp"). Set mustConnect to true if you
+// want the client to connect before reporting success.
+func NewRemoteCreator(addr, transport string, mustConnect bool) Creator {
+	return func() (Client, error) {
+		remoteApp, err := NewClient(addr, transport, mustConnect)
+		if err != nil {
+			return nil, fmt.Errorf("failed to connect to proxy: %w", err)
+		}
+
+		return remoteApp, nil
+	}
+}
--- a/abci/client/doc.go
+++ b/abci/client/doc.go
@@ -1,4 +1,4 @@
-// Package abcicli provides an ABCI implementation in Go.
+// Package abciclient provides an ABCI implementation in Go.
 //
 // There are 3 clients available:
 //		1. socket (unix or TCP)
@@ -26,4 +26,4 @@
 //
 // sync: waits for all Async calls to complete (essentially what Flush does in
 // the socket client) and calls Sync method.
-package abcicli
+package abciclient
--- a/abci/client/grpc_client.go
+++ b/abci/client/grpc_client.go
@@ -1,4 +1,4 @@
-package abcicli
+package abciclient

 import (
 	"context"
@@ -24,7 +24,7 @@ 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
@@ -149,8 +149,8 @@ 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
 }

@@ -158,8 +158,8 @@ 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()
 }

 //----------------------------------------
--- a/abci/client/local_client.go
+++ b/abci/client/local_client.go
@@ -1,4 +1,4 @@
-package abcicli
+package abciclient

 import (
 	"context"
@@ -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()?
@@ -67,8 +65,8 @@ func (app *localClient) EchoAsync(ctx context.Context, msg string) (*ReqRes, err
 }

 func (app *localClient) InfoAsync(ctx context.Context, req types.RequestInfo) (*ReqRes, error) {
-	app.mtx.RLock()
-	defer app.mtx.RUnlock()
+	app.mtx.Lock()
+	defer app.mtx.Unlock()

 	res := app.Application.Info(req)
 	return app.callback(
@@ -100,8 +98,8 @@ func (app *localClient) CheckTxAsync(ctx context.Context, req types.RequestCheck
 }

 func (app *localClient) QueryAsync(ctx context.Context, req types.RequestQuery) (*ReqRes, error) {
-	app.mtx.RLock()
-	defer app.mtx.RUnlock()
+	app.mtx.Lock()
+	defer app.mtx.Unlock()

 	res := app.Application.Query(req)
 	return app.callback(
@@ -215,8 +213,8 @@ func (app *localClient) EchoSync(ctx context.Context, msg string) (*types.Respon
 }

 func (app *localClient) InfoSync(ctx context.Context, req types.RequestInfo) (*types.ResponseInfo, error) {
-	app.mtx.RLock()
-	defer app.mtx.RUnlock()
+	app.mtx.Lock()
+	defer app.mtx.Unlock()

 	res := app.Application.Info(req)
 	return &res, nil
@@ -249,8 +247,8 @@ func (app *localClient) QuerySync(
 	ctx context.Context,
 	req types.RequestQuery,
 ) (*types.ResponseQuery, error) {
-	app.mtx.RLock()
-	defer app.mtx.RUnlock()
+	app.mtx.Lock()
+	defer app.mtx.Unlock()

 	res := app.Application.Query(req)
 	return &res, nil
--- a/abci/client/mocks/client.go
+++ b/abci/client/mocks/client.go
@@ -5,7 +5,7 @@ package mocks
 import (
 	context "context"

-	abcicli "github.com/tendermint/tendermint/abci/client"
+	abciclient "github.com/tendermint/tendermint/abci/client"

 	log "github.com/tendermint/tendermint/libs/log"

@@ -20,15 +20,15 @@ type Client struct {
 }

 // ApplySnapshotChunkAsync provides a mock function with given fields: _a0, _a1
-func (_m *Client) ApplySnapshotChunkAsync(_a0 context.Context, _a1 types.RequestApplySnapshotChunk) (*abcicli.ReqRes, error) {
+func (_m *Client) ApplySnapshotChunkAsync(_a0 context.Context, _a1 types.RequestApplySnapshotChunk) (*abciclient.ReqRes, error) {
 	ret := _m.Called(_a0, _a1)

-	var r0 *abcicli.ReqRes
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestApplySnapshotChunk) *abcicli.ReqRes); ok {
+	var r0 *abciclient.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestApplySnapshotChunk) *abciclient.ReqRes); ok {
 		r0 = rf(_a0, _a1)
 	} else {
 		if ret.Get(0) != nil {
-			r0 = ret.Get(0).(*abcicli.ReqRes)
+			r0 = ret.Get(0).(*abciclient.ReqRes)
 		}
 	}

@@ -66,15 +66,15 @@ func (_m *Client) ApplySnapshotChunkSync(_a0 context.Context, _a1 types.RequestA
 }

 // BeginBlockAsync provides a mock function with given fields: _a0, _a1
-func (_m *Client) BeginBlockAsync(_a0 context.Context, _a1 types.RequestBeginBlock) (*abcicli.ReqRes, error) {
+func (_m *Client) BeginBlockAsync(_a0 context.Context, _a1 types.RequestBeginBlock) (*abciclient.ReqRes, error) {
 	ret := _m.Called(_a0, _a1)

-	var r0 *abcicli.ReqRes
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestBeginBlock) *abcicli.ReqRes); ok {
+	var r0 *abciclient.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestBeginBlock) *abciclient.ReqRes); ok {
 		r0 = rf(_a0, _a1)
 	} else {
 		if ret.Get(0) != nil {
-			r0 = ret.Get(0).(*abcicli.ReqRes)
+			r0 = ret.Get(0).(*abciclient.ReqRes)
 		}
 	}

@@ -112,15 +112,15 @@ func (_m *Client) BeginBlockSync(_a0 context.Context, _a1 types.RequestBeginBloc
 }

 // CheckTxAsync provides a mock function with given fields: _a0, _a1
-func (_m *Client) CheckTxAsync(_a0 context.Context, _a1 types.RequestCheckTx) (*abcicli.ReqRes, error) {
+func (_m *Client) CheckTxAsync(_a0 context.Context, _a1 types.RequestCheckTx) (*abciclient.ReqRes, error) {
 	ret := _m.Called(_a0, _a1)

-	var r0 *abcicli.ReqRes
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestCheckTx) *abcicli.ReqRes); ok {
+	var r0 *abciclient.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestCheckTx) *abciclient.ReqRes); ok {
 		r0 = rf(_a0, _a1)
 	} else {
 		if ret.Get(0) != nil {
-			r0 = ret.Get(0).(*abcicli.ReqRes)
+			r0 = ret.Get(0).(*abciclient.ReqRes)
 		}
 	}

@@ -158,15 +158,15 @@ func (_m *Client) CheckTxSync(_a0 context.Context, _a1 types.RequestCheckTx) (*t
 }

 // CommitAsync provides a mock function with given fields: _a0
-func (_m *Client) CommitAsync(_a0 context.Context) (*abcicli.ReqRes, error) {
+func (_m *Client) CommitAsync(_a0 context.Context) (*abciclient.ReqRes, error) {
 	ret := _m.Called(_a0)

-	var r0 *abcicli.ReqRes
-	if rf, ok := ret.Get(0).(func(context.Context) *abcicli.ReqRes); ok {
+	var r0 *abciclient.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context) *abciclient.ReqRes); ok {
 		r0 = rf(_a0)
 	} else {
 		if ret.Get(0) != nil {
-			r0 = ret.Get(0).(*abcicli.ReqRes)
+			r0 = ret.Get(0).(*abciclient.ReqRes)
 		}
 	}

@@ -204,15 +204,15 @@ func (_m *Client) CommitSync(_a0 context.Context) (*types.ResponseCommit, error)
 }

 // DeliverTxAsync provides a mock function with given fields: _a0, _a1
-func (_m *Client) DeliverTxAsync(_a0 context.Context, _a1 types.RequestDeliverTx) (*abcicli.ReqRes, error) {
+func (_m *Client) DeliverTxAsync(_a0 context.Context, _a1 types.RequestDeliverTx) (*abciclient.ReqRes, error) {
 	ret := _m.Called(_a0, _a1)

-	var r0 *abcicli.ReqRes
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestDeliverTx) *abcicli.ReqRes); ok {
+	var r0 *abciclient.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestDeliverTx) *abciclient.ReqRes); ok {
 		r0 = rf(_a0, _a1)
 	} else {
 		if ret.Get(0) != nil {
-			r0 = ret.Get(0).(*abcicli.ReqRes)
+			r0 = ret.Get(0).(*abciclient.ReqRes)
 		}
 	}

@@ -250,15 +250,15 @@ func (_m *Client) DeliverTxSync(_a0 context.Context, _a1 types.RequestDeliverTx)
 }

 // EchoAsync provides a mock function with given fields: ctx, msg
-func (_m *Client) EchoAsync(ctx context.Context, msg string) (*abcicli.ReqRes, error) {
+func (_m *Client) EchoAsync(ctx context.Context, msg string) (*abciclient.ReqRes, error) {
 	ret := _m.Called(ctx, msg)

-	var r0 *abcicli.ReqRes
-	if rf, ok := ret.Get(0).(func(context.Context, string) *abcicli.ReqRes); ok {
+	var r0 *abciclient.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context, string) *abciclient.ReqRes); ok {
 		r0 = rf(ctx, msg)
 	} else {
 		if ret.Get(0) != nil {
-			r0 = ret.Get(0).(*abcicli.ReqRes)
+			r0 = ret.Get(0).(*abciclient.ReqRes)
 		}
 	}

@@ -296,15 +296,15 @@ func (_m *Client) EchoSync(ctx context.Context, msg string) (*types.ResponseEcho
 }

 // EndBlockAsync provides a mock function with given fields: _a0, _a1
-func (_m *Client) EndBlockAsync(_a0 context.Context, _a1 types.RequestEndBlock) (*abcicli.ReqRes, error) {
+func (_m *Client) EndBlockAsync(_a0 context.Context, _a1 types.RequestEndBlock) (*abciclient.ReqRes, error) {
 	ret := _m.Called(_a0, _a1)

-	var r0 *abcicli.ReqRes
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestEndBlock) *abcicli.ReqRes); ok {
+	var r0 *abciclient.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestEndBlock) *abciclient.ReqRes); ok {
 		r0 = rf(_a0, _a1)
 	} else {
 		if ret.Get(0) != nil {
-			r0 = ret.Get(0).(*abcicli.ReqRes)
+			r0 = ret.Get(0).(*abciclient.ReqRes)
 		}
 	}

@@ -356,15 +356,15 @@ func (_m *Client) Error() error {
 }

 // FlushAsync provides a mock function with given fields: _a0
-func (_m *Client) FlushAsync(_a0 context.Context) (*abcicli.ReqRes, error) {
+func (_m *Client) FlushAsync(_a0 context.Context) (*abciclient.ReqRes, error) {
 	ret := _m.Called(_a0)

-	var r0 *abcicli.ReqRes
-	if rf, ok := ret.Get(0).(func(context.Context) *abcicli.ReqRes); ok {
+	var r0 *abciclient.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context) *abciclient.ReqRes); ok {
 		r0 = rf(_a0)
 	} else {
 		if ret.Get(0) != nil {
-			r0 = ret.Get(0).(*abcicli.ReqRes)
+			r0 = ret.Get(0).(*abciclient.ReqRes)
 		}
 	}

@@ -393,15 +393,15 @@ func (_m *Client) FlushSync(_a0 context.Context) error {
 }

 // InfoAsync provides a mock function with given fields: _a0, _a1
-func (_m *Client) InfoAsync(_a0 context.Context, _a1 types.RequestInfo) (*abcicli.ReqRes, error) {
+func (_m *Client) InfoAsync(_a0 context.Context, _a1 types.RequestInfo) (*abciclient.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 {
+	var r0 *abciclient.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestInfo) *abciclient.ReqRes); ok {
 		r0 = rf(_a0, _a1)
 	} else {
 		if ret.Get(0) != nil {
-			r0 = ret.Get(0).(*abcicli.ReqRes)
+			r0 = ret.Get(0).(*abciclient.ReqRes)
 		}
 	}

@@ -439,15 +439,15 @@ func (_m *Client) InfoSync(_a0 context.Context, _a1 types.RequestInfo) (*types.R
 }

 // InitChainAsync provides a mock function with given fields: _a0, _a1
-func (_m *Client) InitChainAsync(_a0 context.Context, _a1 types.RequestInitChain) (*abcicli.ReqRes, error) {
+func (_m *Client) InitChainAsync(_a0 context.Context, _a1 types.RequestInitChain) (*abciclient.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 {
+	var r0 *abciclient.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestInitChain) *abciclient.ReqRes); ok {
 		r0 = rf(_a0, _a1)
 	} else {
 		if ret.Get(0) != nil {
-			r0 = ret.Get(0).(*abcicli.ReqRes)
+			r0 = ret.Get(0).(*abciclient.ReqRes)
 		}
 	}

@@ -499,15 +499,15 @@ func (_m *Client) IsRunning() bool {
 }

 // ListSnapshotsAsync provides a mock function with given fields: _a0, _a1
-func (_m *Client) ListSnapshotsAsync(_a0 context.Context, _a1 types.RequestListSnapshots) (*abcicli.ReqRes, error) {
+func (_m *Client) ListSnapshotsAsync(_a0 context.Context, _a1 types.RequestListSnapshots) (*abciclient.ReqRes, error) {
 	ret := _m.Called(_a0, _a1)

-	var r0 *abcicli.ReqRes
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestListSnapshots) *abcicli.ReqRes); ok {
+	var r0 *abciclient.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestListSnapshots) *abciclient.ReqRes); ok {
 		r0 = rf(_a0, _a1)
 	} else {
 		if ret.Get(0) != nil {
-			r0 = ret.Get(0).(*abcicli.ReqRes)
+			r0 = ret.Get(0).(*abciclient.ReqRes)
 		}
 	}

@@ -545,15 +545,15 @@ func (_m *Client) ListSnapshotsSync(_a0 context.Context, _a1 types.RequestListSn
 }

 // LoadSnapshotChunkAsync provides a mock function with given fields: _a0, _a1
-func (_m *Client) LoadSnapshotChunkAsync(_a0 context.Context, _a1 types.RequestLoadSnapshotChunk) (*abcicli.ReqRes, error) {
+func (_m *Client) LoadSnapshotChunkAsync(_a0 context.Context, _a1 types.RequestLoadSnapshotChunk) (*abciclient.ReqRes, error) {
 	ret := _m.Called(_a0, _a1)

-	var r0 *abcicli.ReqRes
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestLoadSnapshotChunk) *abcicli.ReqRes); ok {
+	var r0 *abciclient.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestLoadSnapshotChunk) *abciclient.ReqRes); ok {
 		r0 = rf(_a0, _a1)
 	} else {
 		if ret.Get(0) != nil {
-			r0 = ret.Get(0).(*abcicli.ReqRes)
+			r0 = ret.Get(0).(*abciclient.ReqRes)
 		}
 	}

@@ -591,15 +591,15 @@ func (_m *Client) LoadSnapshotChunkSync(_a0 context.Context, _a1 types.RequestLo
 }

 // OfferSnapshotAsync provides a mock function with given fields: _a0, _a1
-func (_m *Client) OfferSnapshotAsync(_a0 context.Context, _a1 types.RequestOfferSnapshot) (*abcicli.ReqRes, error) {
+func (_m *Client) OfferSnapshotAsync(_a0 context.Context, _a1 types.RequestOfferSnapshot) (*abciclient.ReqRes, error) {
 	ret := _m.Called(_a0, _a1)

-	var r0 *abcicli.ReqRes
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestOfferSnapshot) *abcicli.ReqRes); ok {
+	var r0 *abciclient.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestOfferSnapshot) *abciclient.ReqRes); ok {
 		r0 = rf(_a0, _a1)
 	} else {
 		if ret.Get(0) != nil {
-			r0 = ret.Get(0).(*abcicli.ReqRes)
+			r0 = ret.Get(0).(*abciclient.ReqRes)
 		}
 	}

@@ -670,15 +670,15 @@ func (_m *Client) OnStop() {
 }

 // QueryAsync provides a mock function with given fields: _a0, _a1
-func (_m *Client) QueryAsync(_a0 context.Context, _a1 types.RequestQuery) (*abcicli.ReqRes, error) {
+func (_m *Client) QueryAsync(_a0 context.Context, _a1 types.RequestQuery) (*abciclient.ReqRes, error) {
 	ret := _m.Called(_a0, _a1)

-	var r0 *abcicli.ReqRes
-	if rf, ok := ret.Get(0).(func(context.Context, types.RequestQuery) *abcicli.ReqRes); ok {
+	var r0 *abciclient.ReqRes
+	if rf, ok := ret.Get(0).(func(context.Context, types.RequestQuery) *abciclient.ReqRes); ok {
 		r0 = rf(_a0, _a1)
 	} else {
 		if ret.Get(0) != nil {
-			r0 = ret.Get(0).(*abcicli.ReqRes)
+			r0 = ret.Get(0).(*abciclient.ReqRes)
 		}
 	}

@@ -751,7 +751,7 @@ func (_m *Client) SetLogger(_a0 log.Logger) {
 }

 // SetResponseCallback provides a mock function with given fields: _a0
-func (_m *Client) SetResponseCallback(_a0 abcicli.Callback) {
+func (_m *Client) SetResponseCallback(_a0 abciclient.Callback) {
 	_m.Called(_a0)
 }

--- a/abci/client/socket_client.go
+++ b/abci/client/socket_client.go
@@ -1,4 +1,4 @@
-package abcicli
+package abciclient

 import (
 	"bufio"
@@ -13,7 +13,6 @@ import (

 	"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"
 )
@@ -22,8 +21,6 @@ const (
 	// reqQueueSize is the max number of queued async requests.
 	// (memory: 256MB max assuming 1MB transactions)
 	reqQueueSize = 256
-	// Don't wait longer than...
-	flushThrottleMS = 20
 )

 type reqResWithContext struct {
@@ -40,10 +37,9 @@ type socketClient struct {
 	mustConnect bool
 	conn        net.Conn

-	reqQueue   chan *reqResWithContext
-	flushTimer *timer.ThrottleTimer
+	reqQueue chan *reqResWithContext

-	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.
@@ -57,7 +53,6 @@ var _ Client = (*socketClient)(nil)
 func NewSocketClient(addr string, mustConnect bool) Client {
 	cli := &socketClient{
 		reqQueue:    make(chan *reqResWithContext, reqQueueSize),
-		flushTimer:  timer.NewThrottleTimer("socketClient", flushThrottleMS),
 		mustConnect: mustConnect,

 		addr:    addr,
@@ -102,14 +97,13 @@ func (cli *socketClient) OnStop() {
 		cli.conn.Close()
 	}

-	cli.flushQueue()
-	cli.flushTimer.Stop()
+	cli.drainQueue()
 }

 // 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
 }

@@ -119,45 +113,32 @@ 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()
 }

 //----------------------------------------

 func (cli *socketClient) sendRequestsRoutine(conn io.Writer) {
-	w := bufio.NewWriter(conn)
+	bw := bufio.NewWriter(conn)
 	for {
 		select {
 		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)
-			if err != nil {
+
+			if err := types.WriteMessage(reqres.R.Request, bw); err != nil {
 				cli.stopForError(fmt.Errorf("write to buffer: %w", err))
 				return
 			}
+			if err := bw.Flush(); err != nil {
+				cli.stopForError(fmt.Errorf("flush buffer: %w", err))
+				return
+			}

-			// If it's a flush request, flush the current buffer.
-			if _, ok := reqres.R.Request.Value.(*types.Request_Flush); ok {
-				err = w.Flush()
-				if err != nil {
-					cli.stopForError(fmt.Errorf("flush buffer: %w", err))
-					return
-				}
-			}
-		case <-cli.flushTimer.Ch: // flush queue
-			select {
-			case cli.reqQueue <- &reqResWithContext{R: NewReqRes(types.ToRequestFlush()), C: context.Background()}:
-			default:
-				// Probably will fill the buffer, or retry later.
-			}
 		case <-cli.Quit():
 			return
 		}
@@ -492,14 +473,6 @@ func (cli *socketClient) queueRequest(ctx context.Context, req *types.Request, s
 		}
 	}

-	// Maybe auto-flush, or unset auto-flush
-	switch req.Value.(type) {
-	case *types.Request_Flush:
-		cli.flushTimer.Unset()
-	default:
-		cli.flushTimer.Set()
-	}
-
 	return reqres, nil
 }

@@ -537,7 +510,9 @@ func queueErr(e error) error {
 	return fmt.Errorf("can't queue req: %w", e)
 }

-func (cli *socketClient) flushQueue() {
+// drainQueue marks as complete and discards all remaining pending requests
+// from the queue.
+func (cli *socketClient) drainQueue() {
 	cli.mtx.Lock()
 	defer cli.mtx.Unlock()

@@ -547,14 +522,17 @@ func (cli *socketClient) flushQueue() {
 		reqres.Done()
 	}

-	// mark all queued messages as resolved
-LOOP:
+	// Mark all queued messages as resolved.
+	//
+	// TODO(creachadair): We can't simply range the channel, because it is never
+	// closed, and the writer continues to add work.
+	// See https://github.com/tendermint/tendermint/issues/6996.
 	for {
 		select {
 		case reqres := <-cli.reqQueue:
 			reqres.R.Done()
 		default:
-			break LOOP
+			return
 		}
 	}
 }
--- a/abci/client/socket_client_test.go
+++ b/abci/client/socket_client_test.go
@@ -1,4 +1,4 @@
-package abcicli_test
+package abciclient_test

 import (
 	"context"
@@ -11,7 +11,7 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"

-	abcicli "github.com/tendermint/tendermint/abci/client"
+	abciclient "github.com/tendermint/tendermint/abci/client"
 	"github.com/tendermint/tendermint/abci/server"
 	"github.com/tendermint/tendermint/abci/types"
 	"github.com/tendermint/tendermint/libs/service"
@@ -100,7 +100,7 @@ func TestHangingSyncCalls(t *testing.T) {
 }

 func setupClientServer(t *testing.T, app types.Application) (
-	service.Service, abcicli.Client) {
+	service.Service, abciclient.Client) {
 	// some port between 20k and 30k
 	port := 20000 + rand.Int31()%10000
 	addr := fmt.Sprintf("localhost:%d", port)
@@ -110,7 +110,7 @@ func setupClientServer(t *testing.T, app types.Application) (
 	err = s.Start()
 	require.NoError(t, err)

-	c := abcicli.NewSocketClient(addr, true)
+	c := abciclient.NewSocketClient(addr, true)
 	err = c.Start()
 	require.NoError(t, err)

--- a/abci/cmd/abci-cli/abci-cli.go
+++ b/abci/cmd/abci-cli/abci-cli.go
@@ -15,7 +15,7 @@ import (
 	"github.com/tendermint/tendermint/libs/log"
 	tmos "github.com/tendermint/tendermint/libs/os"

-	abcicli "github.com/tendermint/tendermint/abci/client"
+	abciclient "github.com/tendermint/tendermint/abci/client"
 	"github.com/tendermint/tendermint/abci/example/code"
 	"github.com/tendermint/tendermint/abci/example/kvstore"
 	"github.com/tendermint/tendermint/abci/server"
@@ -27,7 +27,7 @@ import (

 // client is a global variable so it can be reused by the console
 var (
-	client abcicli.Client
+	client abciclient.Client
 	logger log.Logger

 	ctx = context.Background()
@@ -67,7 +67,7 @@ var RootCmd = &cobra.Command{

 		if client == nil {
 			var err error
-			client, err = abcicli.NewClient(flagAddress, flagAbci, false)
+			client, err = abciclient.NewClient(flagAddress, flagAbci, false)
 			if err != nil {
 				return err
 			}
--- a/abci/example/example_test.go
+++ b/abci/example/example_test.go
@@ -17,7 +17,7 @@ import (
 	"github.com/tendermint/tendermint/libs/log"
 	tmnet "github.com/tendermint/tendermint/libs/net"

-	abcicli "github.com/tendermint/tendermint/abci/client"
+	abciclient "github.com/tendermint/tendermint/abci/client"
 	"github.com/tendermint/tendermint/abci/example/code"
 	"github.com/tendermint/tendermint/abci/example/kvstore"
 	abciserver "github.com/tendermint/tendermint/abci/server"
@@ -61,7 +61,7 @@ func testStream(t *testing.T, app types.Application) {
 	})

 	// Connect to the socket
-	client := abcicli.NewSocketClient(socket, false)
+	client := abciclient.NewSocketClient(socket, false)
 	client.SetLogger(log.TestingLogger().With("module", "abci-client"))
 	err = client.Start()
 	require.NoError(t, err)
--- a/abci/example/kvstore/kvstore_test.go
+++ b/abci/example/kvstore/kvstore_test.go
@@ -12,7 +12,7 @@ import (
 	"github.com/tendermint/tendermint/libs/log"
 	"github.com/tendermint/tendermint/libs/service"

-	abcicli "github.com/tendermint/tendermint/abci/client"
+	abciclient "github.com/tendermint/tendermint/abci/client"
 	"github.com/tendermint/tendermint/abci/example/code"
 	abciserver "github.com/tendermint/tendermint/abci/server"
 	"github.com/tendermint/tendermint/abci/types"
@@ -229,7 +229,7 @@ func valsEqual(t *testing.T, vals1, vals2 []types.ValidatorUpdate) {
 	}
 }

-func makeSocketClientServer(app types.Application, name string) (abcicli.Client, service.Service, error) {
+func makeSocketClientServer(app types.Application, name string) (abciclient.Client, service.Service, error) {
 	// Start the listener
 	socket := fmt.Sprintf("unix://%s.sock", name)
 	logger := log.TestingLogger()
@@ -241,7 +241,7 @@ func makeSocketClientServer(app types.Application, name string) (abcicli.Client,
 	}

 	// Connect to the socket
-	client := abcicli.NewSocketClient(socket, false)
+	client := abciclient.NewSocketClient(socket, false)
 	client.SetLogger(logger.With("module", "abci-client"))
 	if err := client.Start(); err != nil {
 		if err = server.Stop(); err != nil {
@@ -253,7 +253,7 @@ func makeSocketClientServer(app types.Application, name string) (abcicli.Client,
 	return client, server, nil
 }

-func makeGRPCClientServer(app types.Application, name string) (abcicli.Client, service.Service, error) {
+func makeGRPCClientServer(app types.Application, name string) (abciclient.Client, service.Service, error) {
 	// Start the listener
 	socket := fmt.Sprintf("unix://%s.sock", name)
 	logger := log.TestingLogger()
@@ -265,7 +265,7 @@ func makeGRPCClientServer(app types.Application, name string) (abcicli.Client, s
 		return nil, nil, err
 	}

-	client := abcicli.NewGRPCClient(socket, true)
+	client := abciclient.NewGRPCClient(socket, true)
 	client.SetLogger(logger.With("module", "abci-client"))
 	if err := client.Start(); err != nil {
 		if err := server.Stop(); err != nil {
@@ -313,7 +313,7 @@ func TestClientServer(t *testing.T) {
 	runClientTests(t, gclient)
 }

-func runClientTests(t *testing.T, client abcicli.Client) {
+func runClientTests(t *testing.T, client abciclient.Client) {
 	// run some tests....
 	key := testKey
 	value := key
@@ -325,7 +325,7 @@ func runClientTests(t *testing.T, client abcicli.Client) {
 	testClient(t, client, tx, key, value)
 }

-func testClient(t *testing.T, app abcicli.Client, tx []byte, key, value string) {
+func testClient(t *testing.T, app abciclient.Client, tx []byte, key, value string) {
 	ar, err := app.DeliverTxSync(ctx, types.RequestDeliverTx{Tx: tx})
 	require.NoError(t, err)
 	require.False(t, ar.IsErr(), ar)
--- a/abci/example/kvstore/persistent_kvstore.go
+++ b/abci/example/kvstore/persistent_kvstore.go
@@ -11,9 +11,9 @@ import (

 	"github.com/tendermint/tendermint/abci/example/code"
 	"github.com/tendermint/tendermint/abci/types"
-	cryptoenc "github.com/tendermint/tendermint/crypto/encoding"
+	"github.com/tendermint/tendermint/crypto/encoding"
 	"github.com/tendermint/tendermint/libs/log"
-	pc "github.com/tendermint/tendermint/proto/tendermint/crypto"
+	cryptoproto "github.com/tendermint/tendermint/proto/tendermint/crypto"
 )

 const (
@@ -30,7 +30,7 @@ type PersistentKVStoreApplication struct {
 	// validator set
 	ValUpdates []types.ValidatorUpdate

-	valAddrToPubKeyMap map[string]pc.PublicKey
+	valAddrToPubKeyMap map[string]cryptoproto.PublicKey

 	logger log.Logger
 }
@@ -46,7 +46,7 @@ func NewPersistentKVStoreApplication(dbDir string) *PersistentKVStoreApplication

 	return &PersistentKVStoreApplication{
 		app:                &Application{state: state},
-		valAddrToPubKeyMap: make(map[string]pc.PublicKey),
+		valAddrToPubKeyMap: make(map[string]cryptoproto.PublicKey),
 		logger:             log.NewNopLogger(),
 	}
 }
@@ -194,8 +194,8 @@ func (app *PersistentKVStoreApplication) Validators() (validators []types.Valida
 	return
 }

-func MakeValSetChangeTx(pubkey pc.PublicKey, power int64) []byte {
-	pk, err := cryptoenc.PubKeyFromProto(pubkey)
+func MakeValSetChangeTx(pubkey cryptoproto.PublicKey, power int64) []byte {
+	pk, err := encoding.PubKeyFromProto(pubkey)
 	if err != nil {
 		panic(err)
 	}
@@ -243,7 +243,7 @@ func (app *PersistentKVStoreApplication) execValidatorTx(tx []byte) types.Respon

 // add, update, or remove a validator
 func (app *PersistentKVStoreApplication) updateValidator(v types.ValidatorUpdate) types.ResponseDeliverTx {
-	pubkey, err := cryptoenc.PubKeyFromProto(v.PubKey)
+	pubkey, err := encoding.PubKeyFromProto(v.PubKey)
 	if err != nil {
 		panic(fmt.Errorf("can't decode public key: %w", err))
 	}
--- a/abci/server/socket_server.go
+++ b/abci/server/socket_server.go
@@ -240,22 +240,15 @@ func (s *SocketServer) handleRequest(req *types.Request, responses chan<- *types

 // Pull responses from 'responses' and write them to conn.
 func (s *SocketServer) handleResponses(closeConn chan error, conn io.Writer, responses <-chan *types.Response) {
-	var count int
-	var bufWriter = bufio.NewWriter(conn)
-	for {
-		var res = <-responses
-		err := types.WriteMessage(res, bufWriter)
-		if err != nil {
+	bw := bufio.NewWriter(conn)
+	for res := range responses {
+		if err := types.WriteMessage(res, bw); err != nil {
 			closeConn <- fmt.Errorf("error writing message: %w", err)
 			return
 		}
-		if _, ok := res.Value.(*types.Response_Flush); ok {
-			err = bufWriter.Flush()
-			if err != nil {
-				closeConn <- fmt.Errorf("error flushing write buffer: %w", err)
-				return
-			}
+		if err := bw.Flush(); err != nil {
+			closeConn <- fmt.Errorf("error flushing write buffer: %w", err)
+			return
 		}
-		count++
 	}
 }
--- a/abci/tests/client_server_test.go
+++ b/abci/tests/client_server_test.go
@@ -5,7 +5,7 @@ import (

 	"github.com/stretchr/testify/assert"

-	abciclient "github.com/tendermint/tendermint/abci/client"
+	abciclientent "github.com/tendermint/tendermint/abci/client"
 	"github.com/tendermint/tendermint/abci/example/kvstore"
 	abciserver "github.com/tendermint/tendermint/abci/server"
 )
@@ -20,7 +20,7 @@ func TestClientServerNoAddrPrefix(t *testing.T) {
 	err = server.Start()
 	assert.NoError(t, err, "expected no error on server.Start")

-	client, err := abciclient.NewClient(addr, transport, true)
+	client, err := abciclientent.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")
--- a/abci/tests/server/client.go
+++ b/abci/tests/server/client.go
@@ -7,14 +7,14 @@ import (
 	"fmt"
 	mrand "math/rand"

-	abcicli "github.com/tendermint/tendermint/abci/client"
+	abciclient "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 {
+func InitChain(client abciclient.Client) error {
 	total := 10
 	vals := make([]types.ValidatorUpdate, total)
 	for i := 0; i < total; i++ {
@@ -34,7 +34,7 @@ func InitChain(client abcicli.Client) error {
 	return nil
 }

-func Commit(client abcicli.Client, hashExp []byte) error {
+func Commit(client abciclient.Client, hashExp []byte) error {
 	res, err := client.CommitSync(ctx)
 	data := res.Data
 	if err != nil {
@@ -51,7 +51,7 @@ func Commit(client abcicli.Client, hashExp []byte) error {
 	return nil
 }

-func DeliverTx(client abcicli.Client, txBytes []byte, codeExp uint32, dataExp []byte) error {
+func DeliverTx(client abciclient.Client, txBytes []byte, codeExp uint32, dataExp []byte) error {
 	res, _ := client.DeliverTxSync(ctx, types.RequestDeliverTx{Tx: txBytes})
 	code, data, log := res.Code, res.Data, res.Log
 	if code != codeExp {
@@ -70,7 +70,7 @@ func DeliverTx(client abcicli.Client, txBytes []byte, codeExp uint32, dataExp []
 	return nil
 }

-func CheckTx(client abcicli.Client, txBytes []byte, codeExp uint32, dataExp []byte) error {
+func CheckTx(client abciclient.Client, txBytes []byte, codeExp uint32, dataExp []byte) error {
 	res, _ := client.CheckTxSync(ctx, types.RequestCheckTx{Tx: txBytes})
 	code, data, log := res.Code, res.Data, res.Log
 	if code != codeExp {
--- a/abci/types/client.go
+++ b/abci/types/client.go
@@ -0,0 +1 @@
+package types
--- a/abci/types/pubkey.go
+++ b/abci/types/pubkey.go
@@ -4,7 +4,7 @@ import (
 	fmt "fmt"

 	"github.com/tendermint/tendermint/crypto/ed25519"
-	cryptoenc "github.com/tendermint/tendermint/crypto/encoding"
+	"github.com/tendermint/tendermint/crypto/encoding"
 	"github.com/tendermint/tendermint/crypto/secp256k1"
 	"github.com/tendermint/tendermint/crypto/sr25519"
 )
@@ -12,7 +12,7 @@ import (
 func Ed25519ValidatorUpdate(pk []byte, power int64) ValidatorUpdate {
 	pke := ed25519.PubKey(pk)

-	pkp, err := cryptoenc.PubKeyToProto(pke)
+	pkp, err := encoding.PubKeyToProto(pke)
 	if err != nil {
 		panic(err)
 	}
@@ -29,7 +29,7 @@ func UpdateValidator(pk []byte, power int64, keyType string) ValidatorUpdate {
 		return Ed25519ValidatorUpdate(pk, power)
 	case secp256k1.KeyType:
 		pke := secp256k1.PubKey(pk)
-		pkp, err := cryptoenc.PubKeyToProto(pke)
+		pkp, err := encoding.PubKeyToProto(pke)
 		if err != nil {
 			panic(err)
 		}
@@ -39,7 +39,7 @@ func UpdateValidator(pk []byte, power int64, keyType string) ValidatorUpdate {
 		}
 	case sr25519.KeyType:
 		pke := sr25519.PubKey(pk)
-		pkp, err := cryptoenc.PubKeyToProto(pke)
+		pkp, err := encoding.PubKeyToProto(pke)
 		if err != nil {
 			panic(err)
 		}
--- a/cmd/tendermint/commands/debug/dump.go
+++ b/cmd/tendermint/commands/debug/dump.go
@@ -11,7 +11,7 @@ import (
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"

-	cfg "github.com/tendermint/tendermint/config"
+	"github.com/tendermint/tendermint/config"
 	"github.com/tendermint/tendermint/libs/cli"
 	rpchttp "github.com/tendermint/tendermint/rpc/client/http"
 )
@@ -65,9 +65,9 @@ func dumpCmdHandler(_ *cobra.Command, args []string) error {
 	}

 	home := viper.GetString(cli.HomeFlag)
-	conf := cfg.DefaultConfig()
+	conf := config.DefaultConfig()
 	conf = conf.SetRoot(home)
-	cfg.EnsureRoot(conf.RootDir)
+	config.EnsureRoot(conf.RootDir)

 	dumpDebugData(outDir, conf, rpc)

@@ -79,7 +79,7 @@ func dumpCmdHandler(_ *cobra.Command, args []string) error {
 	return nil
 }

-func dumpDebugData(outDir string, conf *cfg.Config, rpc *rpchttp.HTTP) {
+func dumpDebugData(outDir string, conf *config.Config, rpc *rpchttp.HTTP) {
 	start := time.Now().UTC()

 	tmpDir, err := ioutil.TempDir(outDir, "tendermint_debug_tmp")
--- a/cmd/tendermint/commands/debug/kill.go
+++ b/cmd/tendermint/commands/debug/kill.go
@@ -14,7 +14,7 @@ import (
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"

-	cfg "github.com/tendermint/tendermint/config"
+	"github.com/tendermint/tendermint/config"
 	"github.com/tendermint/tendermint/libs/cli"
 	rpchttp "github.com/tendermint/tendermint/rpc/client/http"
 )
@@ -50,9 +50,9 @@ func killCmdHandler(cmd *cobra.Command, args []string) error {
 	}

 	home := viper.GetString(cli.HomeFlag)
-	conf := cfg.DefaultConfig()
+	conf := config.DefaultConfig()
 	conf = conf.SetRoot(home)
-	cfg.EnsureRoot(conf.RootDir)
+	config.EnsureRoot(conf.RootDir)

 	// Create a temporary directory which will contain all the state dumps and
 	// relevant files and directories that will be compressed into a file.
--- a/cmd/tendermint/commands/debug/util.go
+++ b/cmd/tendermint/commands/debug/util.go
@@ -9,7 +9,7 @@ import (
 	"path"
 	"path/filepath"

-	cfg "github.com/tendermint/tendermint/config"
+	"github.com/tendermint/tendermint/config"
 	rpchttp "github.com/tendermint/tendermint/rpc/client/http"
 )

@@ -48,7 +48,7 @@ func dumpConsensusState(rpc *rpchttp.HTTP, dir, filename string) error {

 // copyWAL copies the Tendermint node's WAL file. It returns an error if the
 // WAL file cannot be read or copied.
-func copyWAL(conf *cfg.Config, dir string) error {
+func copyWAL(conf *config.Config, dir string) error {
 	walPath := conf.Consensus.WalFile()
 	walFile := filepath.Base(walPath)

--- a/cmd/tendermint/commands/inspect.go
+++ b/cmd/tendermint/commands/inspect.go
@@ -8,12 +8,7 @@ import (

 	"github.com/spf13/cobra"

-	cfg "github.com/tendermint/tendermint/config"
-	"github.com/tendermint/tendermint/inspect"
-	"github.com/tendermint/tendermint/state"
-	"github.com/tendermint/tendermint/state/indexer/sink"
-	"github.com/tendermint/tendermint/store"
-	"github.com/tendermint/tendermint/types"
+	"github.com/tendermint/tendermint/internal/inspect"
 )

 // InspectCmd is the command for starting an inspect server.
@@ -55,29 +50,10 @@ func runInspect(cmd *cobra.Command, args []string) error {
 		cancel()
 	}()

-	blockStoreDB, err := cfg.DefaultDBProvider(&cfg.DBContext{ID: "blockstore", Config: config})
+	ins, err := inspect.NewFromConfig(logger, config)
 	if err != nil {
 		return err
 	}
-	blockStore := store.NewBlockStore(blockStoreDB)
-	stateDB, err := cfg.DefaultDBProvider(&cfg.DBContext{ID: "state", Config: config})
-	if err != nil {
-		if err := blockStoreDB.Close(); err != nil {
-			logger.Error("error closing block store db", "error", err)
-		}
-		return err
-	}
-	genDoc, err := types.GenesisDocFromFile(config.GenesisFile())
-	if err != nil {
-		return err
-	}
-	sinks, err := sink.EventSinksFromConfig(config, cfg.DefaultDBProvider, genDoc.ChainID)
-	if err != nil {
-		return err
-	}
-	stateStore := state.NewStore(stateDB)
-
-	ins := inspect.New(config.RPC, blockStore, stateStore, sinks, logger)

 	logger.Info("starting inspect server")
 	if err := ins.Run(ctx); err != nil {
--- a/cmd/tendermint/commands/light.go
+++ b/cmd/tendermint/commands/light.go
@@ -11,7 +11,6 @@ import (
 	"time"

 	"github.com/spf13/cobra"
-
 	dbm "github.com/tendermint/tm-db"

 	"github.com/tendermint/tendermint/libs/log"
--- a/cmd/tendermint/commands/reindex_event.go
+++ b/cmd/tendermint/commands/reindex_event.go
@@ -6,17 +6,17 @@ import (
 	"strings"

 	"github.com/spf13/cobra"
-	tmdb "github.com/tendermint/tm-db"
+	dbm "github.com/tendermint/tm-db"

 	abcitypes "github.com/tendermint/tendermint/abci/types"
 	tmcfg "github.com/tendermint/tendermint/config"
 	"github.com/tendermint/tendermint/internal/libs/progressbar"
-	ctypes "github.com/tendermint/tendermint/rpc/core/types"
-	"github.com/tendermint/tendermint/state"
-	"github.com/tendermint/tendermint/state/indexer"
-	"github.com/tendermint/tendermint/state/indexer/sink/kv"
-	"github.com/tendermint/tendermint/state/indexer/sink/psql"
-	"github.com/tendermint/tendermint/store"
+	"github.com/tendermint/tendermint/internal/state"
+	"github.com/tendermint/tendermint/internal/state/indexer"
+	"github.com/tendermint/tendermint/internal/state/indexer/sink/kv"
+	"github.com/tendermint/tendermint/internal/state/indexer/sink/psql"
+	"github.com/tendermint/tendermint/internal/store"
+	"github.com/tendermint/tendermint/rpc/coretypes"
 	"github.com/tendermint/tendermint/types"
 )

@@ -29,11 +29,12 @@ var ReIndexEventCmd = &cobra.Command{
 	Use:   "reindex-event",
 	Short: "reindex events to the event store backends",
 	Long: `
-	reindex-event is an offline tooling to re-index block and tx events to the eventsinks,
-	you can run this command when the event store backend dropped/disconnected or you want to replace the backend.
-	The default start-height is 0, meaning the tooling will start reindex from the base block height(inclusive); and the
-	default end-height is 0, meaning the tooling will reindex until the latest block height(inclusive). User can omits
-	either or both arguments.
+reindex-event is an offline tooling to re-index block and tx events to the eventsinks,
+you can run this command when the event store backend dropped/disconnected or you want to 
+replace the backend. The default start-height is 0, meaning the tooling will start 
+reindex from the base block height(inclusive); and the default end-height is 0, meaning 
+the tooling will reindex until the latest block height(inclusive). User can omit
+either or both arguments.
 	`,
 	Example: `
 	tendermint reindex-event
@@ -129,17 +130,17 @@ func loadEventSinks(cfg *tmcfg.Config) ([]indexer.EventSink, error) {
 }

 func loadStateAndBlockStore(cfg *tmcfg.Config) (*store.BlockStore, state.Store, error) {
-	dbType := tmdb.BackendType(cfg.DBBackend)
+	dbType := dbm.BackendType(cfg.DBBackend)

 	// Get BlockStore
-	blockStoreDB, err := tmdb.NewDB("blockstore", dbType, cfg.DBDir())
+	blockStoreDB, err := dbm.NewDB("blockstore", dbType, cfg.DBDir())
 	if err != nil {
 		return nil, nil, err
 	}
 	blockStore := store.NewBlockStore(blockStoreDB)

 	// Get StateStore
-	stateDB, err := tmdb.NewDB("state", dbType, cfg.DBDir())
+	stateDB, err := dbm.NewDB("state", dbType, cfg.DBDir())
 	if err != nil {
 		return nil, nil, err
 	}
@@ -221,14 +222,15 @@ func checkValidHeight(bs state.BlockStore) error {
 	}

 	if startHeight < base {
-		return fmt.Errorf("%s (requested start height: %d, base height: %d)", ctypes.ErrHeightNotAvailable, startHeight, base)
+		return fmt.Errorf("%s (requested start height: %d, base height: %d)",
+			coretypes.ErrHeightNotAvailable, startHeight, base)
 	}

 	height := bs.Height()

 	if startHeight > height {
 		return fmt.Errorf(
-			"%s (requested start height: %d, store height: %d)", ctypes.ErrHeightNotAvailable, startHeight, height)
+			"%s (requested start height: %d, store height: %d)", coretypes.ErrHeightNotAvailable, startHeight, height)
 	}

 	if endHeight == 0 || endHeight > height {
@@ -238,13 +240,13 @@ func checkValidHeight(bs state.BlockStore) error {

 	if endHeight < base {
 		return fmt.Errorf(
-			"%s (requested end height: %d, base height: %d)", ctypes.ErrHeightNotAvailable, endHeight, base)
+			"%s (requested end height: %d, base height: %d)", coretypes.ErrHeightNotAvailable, endHeight, base)
 	}

 	if endHeight < startHeight {
 		return fmt.Errorf(
 			"%s (requested the end height: %d is less than the start height: %d)",
-			ctypes.ErrInvalidRequest, startHeight, endHeight)
+			coretypes.ErrInvalidRequest, startHeight, endHeight)
 	}

 	return nil
--- a/cmd/tendermint/commands/reindex_event_test.go
+++ b/cmd/tendermint/commands/reindex_event_test.go
@@ -11,9 +11,9 @@ import (

 	abcitypes "github.com/tendermint/tendermint/abci/types"
 	tmcfg "github.com/tendermint/tendermint/config"
+	"github.com/tendermint/tendermint/internal/state/indexer"
+	"github.com/tendermint/tendermint/internal/state/mocks"
 	prototmstate "github.com/tendermint/tendermint/proto/tendermint/state"
-	"github.com/tendermint/tendermint/state/indexer"
-	"github.com/tendermint/tendermint/state/mocks"
 	"github.com/tendermint/tendermint/types"
 )

--- a/cmd/tendermint/commands/reset_priv_validator.go
+++ b/cmd/tendermint/commands/reset_priv_validator.go
@@ -37,7 +37,7 @@ var ResetPrivValidatorCmd = &cobra.Command{
 // XXX: this is totally unsafe.
 // it's only suitable for testnets.
 func resetAll(cmd *cobra.Command, args []string) error {
-	return ResetAll(config.DBDir(), config.P2P.AddrBookFile(), config.PrivValidator.KeyFile(),
+	return ResetAll(config.DBDir(), config.PrivValidator.KeyFile(),
 		config.PrivValidator.StateFile(), logger)
 }

@@ -49,12 +49,7 @@ func resetPrivValidator(cmd *cobra.Command, args []string) error {

 // ResetAll removes address book files plus all data, and resets the privValdiator data.
 // Exported so other CLI tools can use it.
-func ResetAll(dbDir, addrBookFile, privValKeyFile, privValStateFile string, logger log.Logger) error {
-	if keepAddrBook {
-		logger.Info("The address book remains intact")
-	} else {
-		removeAddrBook(addrBookFile, logger)
-	}
+func ResetAll(dbDir, privValKeyFile, privValStateFile string, logger log.Logger) error {
 	if err := os.RemoveAll(dbDir); err == nil {
 		logger.Info("Removed all blockchain history", "dir", dbDir)
 	} else {
@@ -87,11 +82,3 @@ func resetFilePV(privValKeyFile, privValStateFile string, logger log.Logger) err
 	}
 	return nil
 }
-
-func removeAddrBook(addrBookFile string, logger log.Logger) {
-	if err := os.Remove(addrBookFile); err == nil {
-		logger.Info("Removed existing address book", "file", addrBookFile)
-	} else if !os.IsNotExist(err) {
-		logger.Info("Error removing address book", "file", addrBookFile, "err", err)
-	}
-}
--- a/cmd/tendermint/commands/rollback.go
+++ b/cmd/tendermint/commands/rollback.go
@@ -0,0 +1,46 @@
+package commands
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+
+	cfg "github.com/tendermint/tendermint/config"
+	"github.com/tendermint/tendermint/internal/state"
+)
+
+var RollbackStateCmd = &cobra.Command{
+	Use:   "rollback",
+	Short: "rollback tendermint state by one height",
+	Long: `
+A state rollback is performed to recover from an incorrect application state transition,
+when Tendermint has persisted an incorrect app hash and is thus unable to make
+progress. Rollback overwrites a state at height n with the state at height n - 1.
+The application should also roll back to height n - 1. No blocks are removed, so upon
+restarting Tendermint the transactions in block n will be re-executed against the
+application.
+`,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		height, hash, err := RollbackState(config)
+		if err != nil {
+			return fmt.Errorf("failed to rollback state: %w", err)
+		}
+
+		fmt.Printf("Rolled back state to height %d and hash %v", height, hash)
+		return nil
+	},
+}
+
+// RollbackState takes the state at the current height n and overwrites it with the state
+// at height n - 1. Note state here refers to tendermint state not application state.
+// Returns the latest state height and app hash alongside an error if there was one.
+func RollbackState(config *cfg.Config) (int64, []byte, error) {
+	// use the parsed config to load the block and state store
+	blockStore, stateStore, err := loadStateAndBlockStore(config)
+	if err != nil {
+		return -1, nil, err
+	}
+
+	// rollback the last state
+	return state.Rollback(blockStore, stateStore)
+}
--- a/cmd/tendermint/commands/run_node.go
+++ b/cmd/tendermint/commands/run_node.go
@@ -65,15 +65,11 @@ func AddNodeFlags(cmd *cobra.Command) {
 		"proxy-app",
 		config.ProxyApp,
 		"proxy app address, or one of: 'kvstore',"+
-			" 'persistent_kvstore' or 'noop' for local testing.")
+			" 'persistent_kvstore', 'e2e' or 'noop' for local testing.")
 	cmd.Flags().String("abci", config.ABCI, "specify abci transport (socket | grpc)")

 	// rpc flags
 	cmd.Flags().String("rpc.laddr", config.RPC.ListenAddress, "RPC listen address. Port required")
-	cmd.Flags().String(
-		"rpc.grpc-laddr",
-		config.RPC.GRPCListenAddress,
-		"GRPC listen address (BroadcastTx only). Port required")
 	cmd.Flags().Bool("rpc.unsafe", config.RPC.Unsafe, "enabled unsafe rpc methods")
 	cmd.Flags().String("rpc.pprof-laddr", config.RPC.PprofListenAddress, "pprof listen address (https://golang.org/pkg/net/http/pprof)")

@@ -84,8 +80,6 @@ func AddNodeFlags(cmd *cobra.Command) {
 		"node listen address. (0.0.0.0:0 means any interface, any port)")
 	cmd.Flags().String("p2p.seeds", config.P2P.Seeds, "comma-delimited ID@host:port seed nodes")
 	cmd.Flags().String("p2p.persistent-peers", config.P2P.PersistentPeers, "comma-delimited ID@host:port persistent peers")
-	cmd.Flags().String("p2p.unconditional-peer-ids",
-		config.P2P.UnconditionalPeerIDs, "comma-delimited IDs of unconditional peers")
 	cmd.Flags().Bool("p2p.upnp", config.P2P.UPNP, "enable/disable UPNP port forwarding")
 	cmd.Flags().Bool("p2p.pex", config.P2P.PexReactor, "enable/disable Peer-Exchange")
 	cmd.Flags().String("p2p.private-peer-ids", config.P2P.PrivatePeerIDs, "comma-delimited private peer IDs")
--- a/cmd/tendermint/commands/testnet.go
+++ b/cmd/tendermint/commands/testnet.go
@@ -226,7 +226,6 @@ func testnetFiles(cmd *cobra.Command, args []string) error {
 	for i := 0; i < nValidators+nNonValidators; i++ {
 		nodeDir := filepath.Join(outputDir, fmt.Sprintf("%s%d", nodeDirPrefix, i))
 		config.SetRoot(nodeDir)
-		config.P2P.AddrBookStrict = false
 		config.P2P.AllowDuplicateIP = true
 		if populatePersistentPeers {
 			persistentPeersWithoutSelf := make([]string, 0)
--- a/cmd/tendermint/main.go
+++ b/cmd/tendermint/main.go
@@ -6,9 +6,9 @@ import (

 	cmd "github.com/tendermint/tendermint/cmd/tendermint/commands"
 	"github.com/tendermint/tendermint/cmd/tendermint/commands/debug"
-	cfg "github.com/tendermint/tendermint/config"
+	"github.com/tendermint/tendermint/config"
 	"github.com/tendermint/tendermint/libs/cli"
-	nm "github.com/tendermint/tendermint/node"
+	"github.com/tendermint/tendermint/node"
 )

 func main() {
@@ -29,6 +29,7 @@ func main() {
 		cmd.GenNodeKeyCmd,
 		cmd.VersionCmd,
 		cmd.InspectCmd,
+		cmd.RollbackStateCmd,
 		cmd.MakeKeyMigrateCommand(),
 		debug.DebugCmd,
 		cli.NewCompletionCmd(rootCmd, true),
@@ -42,12 +43,12 @@ func main() {
 	//	* Provide their own DB implementation
 	// can copy this file and use something other than the
 	// node.NewDefault function
-	nodeFunc := nm.NewDefault
+	nodeFunc := node.NewDefault

 	// Create & start node
 	rootCmd.AddCommand(cmd.NewRunNodeCmd(nodeFunc))

-	cmd := cli.PrepareBaseCmd(rootCmd, "TM", os.ExpandEnv(filepath.Join("$HOME", cfg.DefaultTendermintDir)))
+	cmd := cli.PrepareBaseCmd(rootCmd, "TM", os.ExpandEnv(filepath.Join("$HOME", config.DefaultTendermintDir)))
 	if err := cmd.Execute(); err != nil {
 		panic(err)
 	}
--- a/config/config.go
+++ b/config/config.go
@@ -30,7 +30,6 @@ const (
 	ModeSeed      = "seed"

 	BlockSyncV0 = "v0"
-	BlockSyncV2 = "v2"

 	MempoolV0 = "v0"
 	MempoolV1 = "v1"
@@ -54,16 +53,14 @@ var (
 	defaultPrivValKeyName   = "priv_validator_key.json"
 	defaultPrivValStateName = "priv_validator_state.json"

-	defaultNodeKeyName  = "node_key.json"
-	defaultAddrBookName = "addrbook.json"
+	defaultNodeKeyName = "node_key.json"

 	defaultConfigFilePath   = filepath.Join(defaultConfigDir, defaultConfigFileName)
 	defaultGenesisJSONPath  = filepath.Join(defaultConfigDir, defaultGenesisJSONName)
 	defaultPrivValKeyPath   = filepath.Join(defaultConfigDir, defaultPrivValKeyName)
 	defaultPrivValStatePath = filepath.Join(defaultDataDir, defaultPrivValStateName)

-	defaultNodeKeyPath  = filepath.Join(defaultConfigDir, defaultNodeKeyName)
-	defaultAddrBookPath = filepath.Join(defaultConfigDir, defaultAddrBookName)
+	defaultNodeKeyPath = filepath.Join(defaultConfigDir, defaultNodeKeyName)
 )

 // Config defines the top level configuration for a Tendermint node
@@ -142,9 +139,6 @@ func (cfg *Config) ValidateBasic() error {
 	if err := cfg.RPC.ValidateBasic(); err != nil {
 		return fmt.Errorf("error in [rpc] section: %w", err)
 	}
-	if err := cfg.P2P.ValidateBasic(); err != nil {
-		return fmt.Errorf("error in [p2p] section: %w", err)
-	}
 	if err := cfg.Mempool.ValidateBasic(); err != nil {
 		return fmt.Errorf("error in [mempool] section: %w", err)
 	}
@@ -461,24 +455,10 @@ type RPCConfig struct {
 	// A list of non simple headers the client is allowed to use with cross-domain requests.
 	CORSAllowedHeaders []string `mapstructure:"cors-allowed-headers"`

-	// TCP or UNIX socket address for the gRPC server to listen on
-	// NOTE: This server only supports /broadcast_tx_commit
-	// Deprecated: gRPC in the RPC layer of Tendermint will be removed in 0.36.
-	GRPCListenAddress string `mapstructure:"grpc-laddr"`
-
-	// Maximum number of simultaneous connections.
-	// Does not include RPC (HTTP&WebSocket) connections. See max-open-connections
-	// If you want to accept a larger number than the default, make sure
-	// you increase your OS limits.
-	// 0 - unlimited.
-	// Deprecated: gRPC in the RPC layer of Tendermint will be removed in 0.36.
-	GRPCMaxOpenConnections int `mapstructure:"grpc-max-open-connections"`
-
 	// Activate unsafe RPC commands like /dial-persistent-peers and /unsafe-flush-mempool
 	Unsafe bool `mapstructure:"unsafe"`

 	// Maximum number of simultaneous connections (including WebSocket).
-	// Does not include gRPC connections. See grpc-max-open-connections
 	// If you want to accept a larger number than the default, make sure
 	// you increase your OS limits.
 	// 0 - unlimited.
@@ -492,7 +472,7 @@ type RPCConfig struct {
 	MaxSubscriptionClients int `mapstructure:"max-subscription-clients"`

 	// Maximum number of unique queries a given client can /subscribe to
-	// If you're using GRPC (or Local RPC client) and /broadcast_tx_commit, set
+	// If you're using a Local RPC client and /broadcast_tx_commit, set this
 	// to the estimated maximum number of broadcast_tx_commit calls per block.
 	MaxSubscriptionsPerClient int `mapstructure:"max-subscriptions-per-client"`

@@ -533,12 +513,10 @@ type RPCConfig struct {
 // DefaultRPCConfig returns a default configuration for the RPC server
 func DefaultRPCConfig() *RPCConfig {
 	return &RPCConfig{
-		ListenAddress:          "tcp://127.0.0.1:26657",
-		CORSAllowedOrigins:     []string{},
-		CORSAllowedMethods:     []string{http.MethodHead, http.MethodGet, http.MethodPost},
-		CORSAllowedHeaders:     []string{"Origin", "Accept", "Content-Type", "X-Requested-With", "X-Server-Time"},
-		GRPCListenAddress:      "",
-		GRPCMaxOpenConnections: 900,
+		ListenAddress:      "tcp://127.0.0.1:26657",
+		CORSAllowedOrigins: []string{},
+		CORSAllowedMethods: []string{http.MethodHead, http.MethodGet, http.MethodPost},
+		CORSAllowedHeaders: []string{"Origin", "Accept", "Content-Type", "X-Requested-With", "X-Server-Time"},

 		Unsafe:             false,
 		MaxOpenConnections: 900,
@@ -559,7 +537,6 @@ func DefaultRPCConfig() *RPCConfig {
 func TestRPCConfig() *RPCConfig {
 	cfg := DefaultRPCConfig()
 	cfg.ListenAddress = "tcp://127.0.0.1:36657"
-	cfg.GRPCListenAddress = "tcp://127.0.0.1:36658"
 	cfg.Unsafe = true
 	return cfg
 }
@@ -567,9 +544,6 @@ func TestRPCConfig() *RPCConfig {
 // ValidateBasic performs basic validation (checking param bounds, etc.) and
 // returns an error if any check fails.
 func (cfg *RPCConfig) ValidateBasic() error {
-	if cfg.GRPCMaxOpenConnections < 0 {
-		return errors.New("grpc-max-open-connections can't be negative")
-	}
 	if cfg.MaxOpenConnections < 0 {
 		return errors.New("max-open-connections can't be negative")
 	}
@@ -647,25 +621,6 @@ type P2PConfig struct { //nolint: maligned
 	// UPNP port forwarding
 	UPNP bool `mapstructure:"upnp"`

-	// Path to address book
-	AddrBook string `mapstructure:"addr-book-file"`
-
-	// Set true for strict address routability rules
-	// Set false for private or local networks
-	AddrBookStrict bool `mapstructure:"addr-book-strict"`
-
-	// Maximum number of inbound peers
-	//
-	// TODO: Remove once p2p refactor is complete in favor of MaxConnections.
-	// ref: https://github.com/tendermint/tendermint/issues/5670
-	MaxNumInboundPeers int `mapstructure:"max-num-inbound-peers"`
-
-	// Maximum number of outbound peers to connect to, excluding persistent peers.
-	//
-	// TODO: Remove once p2p refactor is complete in favor of MaxConnections.
-	// ref: https://github.com/tendermint/tendermint/issues/5670
-	MaxNumOutboundPeers int `mapstructure:"max-num-outbound-peers"`
-
 	// MaxConnections defines the maximum number of connected peers (inbound and
 	// outbound).
 	MaxConnections uint16 `mapstructure:"max-connections"`
@@ -674,24 +629,6 @@ type P2PConfig struct { //nolint: maligned
 	// attempts per IP address.
 	MaxIncomingConnectionAttempts uint `mapstructure:"max-incoming-connection-attempts"`

-	// List of node IDs, to which a connection will be (re)established ignoring any existing limits
-	UnconditionalPeerIDs string `mapstructure:"unconditional-peer-ids"`
-
-	// Maximum pause when redialing a persistent peer (if zero, exponential backoff is used)
-	PersistentPeersMaxDialPeriod time.Duration `mapstructure:"persistent-peers-max-dial-period"`
-
-	// Time to wait before flushing messages out on the connection
-	FlushThrottleTimeout time.Duration `mapstructure:"flush-throttle-timeout"`
-
-	// Maximum size of a message packet payload, in bytes
-	MaxPacketMsgPayloadSize int `mapstructure:"max-packet-msg-payload-size"`
-
-	// Rate at which packets can be sent, in bytes/second
-	SendRate int64 `mapstructure:"send-rate"`
-
-	// Rate at which packets can be received, in bytes/second
-	RecvRate int64 `mapstructure:"recv-rate"`
-
 	// Set true to enable the peer-exchange reactor
 	PexReactor bool `mapstructure:"pex"`

@@ -710,13 +647,8 @@ type P2PConfig struct { //nolint: maligned
 	// Force dial to fail
 	TestDialFail bool `mapstructure:"test-dial-fail"`

-	// UseLegacy enables the "legacy" P2P implementation and
-	// disables the newer default implementation. This flag will
-	// be removed in a future release.
-	UseLegacy bool `mapstructure:"use-legacy"`
-
 	// Makes it possible to configure which queue backend the p2p
-	// layer uses. Options are: "fifo", "priority" and "wdrr",
+	// layer uses. Options are: "fifo" and "priority",
 	// with the default being "priority".
 	QueueType string `mapstructure:"queue-type"`
 }
@@ -727,29 +659,14 @@ func DefaultP2PConfig() *P2PConfig {
 		ListenAddress:                 "tcp://0.0.0.0:26656",
 		ExternalAddress:               "",
 		UPNP:                          false,
-		AddrBook:                      defaultAddrBookPath,
-		AddrBookStrict:                true,
-		MaxNumInboundPeers:            40,
-		MaxNumOutboundPeers:           10,
 		MaxConnections:                64,
 		MaxIncomingConnectionAttempts: 100,
-		PersistentPeersMaxDialPeriod:  0 * time.Second,
-		FlushThrottleTimeout:          100 * time.Millisecond,
-		// The MTU (Maximum Transmission Unit) for Ethernet is 1500 bytes.
-		// The IP header and the TCP header take up 20 bytes each at least (unless
-		// optional header fields are used) and thus the max for (non-Jumbo frame)
-		// Ethernet is 1500 - 20 -20 = 1460
-		// Source: https://stackoverflow.com/a/3074427/820520
-		MaxPacketMsgPayloadSize: 1400,
-		SendRate:                5120000, // 5 mB/s
-		RecvRate:                5120000, // 5 mB/s
-		PexReactor:              true,
-		AllowDuplicateIP:        false,
-		HandshakeTimeout:        20 * time.Second,
-		DialTimeout:             3 * time.Second,
-		TestDialFail:            false,
-		QueueType:               "priority",
-		UseLegacy:               false,
+		PexReactor:                    true,
+		AllowDuplicateIP:              false,
+		HandshakeTimeout:              20 * time.Second,
+		DialTimeout:                   3 * time.Second,
+		TestDialFail:                  false,
+		QueueType:                     "priority",
 	}
 }

@@ -757,43 +674,10 @@ func DefaultP2PConfig() *P2PConfig {
 func TestP2PConfig() *P2PConfig {
 	cfg := DefaultP2PConfig()
 	cfg.ListenAddress = "tcp://127.0.0.1:36656"
-	cfg.FlushThrottleTimeout = 10 * time.Millisecond
 	cfg.AllowDuplicateIP = true
 	return cfg
 }

-// AddrBookFile returns the full path to the address book
-func (cfg *P2PConfig) AddrBookFile() string {
-	return rootify(cfg.AddrBook, cfg.RootDir)
-}
-
-// ValidateBasic performs basic validation (checking param bounds, etc.) and
-// returns an error if any check fails.
-func (cfg *P2PConfig) ValidateBasic() error {
-	if cfg.MaxNumInboundPeers < 0 {
-		return errors.New("max-num-inbound-peers can't be negative")
-	}
-	if cfg.MaxNumOutboundPeers < 0 {
-		return errors.New("max-num-outbound-peers can't be negative")
-	}
-	if cfg.FlushThrottleTimeout < 0 {
-		return errors.New("flush-throttle-timeout can't be negative")
-	}
-	if cfg.PersistentPeersMaxDialPeriod < 0 {
-		return errors.New("persistent-peers-max-dial-period can't be negative")
-	}
-	if cfg.MaxPacketMsgPayloadSize < 0 {
-		return errors.New("max-packet-msg-payload-size can't be negative")
-	}
-	if cfg.SendRate < 0 {
-		return errors.New("send-rate can't be negative")
-	}
-	if cfg.RecvRate < 0 {
-		return errors.New("recv-rate can't be negative")
-	}
-	return nil
-}
-
 //-----------------------------------------------------------------------------
 // MempoolConfig

@@ -1025,15 +909,13 @@ func (cfg *StateSyncConfig) ValidateBasic() error {
 // allows them to catchup quickly by downloading blocks in parallel
 // and verifying their commits.
 type BlockSyncConfig struct {
-	Enable  bool   `mapstructure:"enable"`
-	Version string `mapstructure:"version"`
+	Enable bool `mapstructure:"enable"`
 }

 // DefaultBlockSyncConfig returns a default configuration for the block sync service
 func DefaultBlockSyncConfig() *BlockSyncConfig {
 	return &BlockSyncConfig{
-		Enable:  true,
-		Version: BlockSyncV0,
+		Enable: true,
 	}
 }

@@ -1043,16 +925,7 @@ func TestBlockSyncConfig() *BlockSyncConfig {
 }

 // ValidateBasic performs basic validation.
-func (cfg *BlockSyncConfig) ValidateBasic() error {
-	switch cfg.Version {
-	case BlockSyncV0:
-		return nil
-	case BlockSyncV2:
-		return errors.New("blocksync version v2 is no longer supported. Please use v0")
-	default:
-		return fmt.Errorf("unknown blocksync version %s", cfg.Version)
-	}
-}
+func (cfg *BlockSyncConfig) ValidateBasic() error { return nil }

 //-----------------------------------------------------------------------------
 // ConsensusConfig
--- a/config/config_test.go
+++ b/config/config_test.go
@@ -66,7 +66,6 @@ func TestRPCConfigValidateBasic(t *testing.T) {
 	assert.NoError(t, cfg.ValidateBasic())

 	fieldsToTest := []string{
-		"GRPCMaxOpenConnections",
 		"MaxOpenConnections",
 		"MaxSubscriptionClients",
 		"MaxSubscriptionsPerClient",
@@ -82,26 +81,6 @@ func TestRPCConfigValidateBasic(t *testing.T) {
 	}
 }

-func TestP2PConfigValidateBasic(t *testing.T) {
-	cfg := TestP2PConfig()
-	assert.NoError(t, cfg.ValidateBasic())
-
-	fieldsToTest := []string{
-		"MaxNumInboundPeers",
-		"MaxNumOutboundPeers",
-		"FlushThrottleTimeout",
-		"MaxPacketMsgPayloadSize",
-		"SendRate",
-		"RecvRate",
-	}
-
-	for _, fieldName := range fieldsToTest {
-		reflect.ValueOf(cfg).Elem().FieldByName(fieldName).SetInt(-1)
-		assert.Error(t, cfg.ValidateBasic())
-		reflect.ValueOf(cfg).Elem().FieldByName(fieldName).SetInt(0)
-	}
-}
-
 func TestMempoolConfigValidateBasic(t *testing.T) {
 	cfg := TestMempoolConfig()
 	assert.NoError(t, cfg.ValidateBasic())
@@ -128,13 +107,6 @@ func TestStateSyncConfigValidateBasic(t *testing.T) {
 func TestBlockSyncConfigValidateBasic(t *testing.T) {
 	cfg := TestBlockSyncConfig()
 	assert.NoError(t, cfg.ValidateBasic())
-
-	// tamper with version
-	cfg.Version = "v2"
-	assert.Error(t, cfg.ValidateBasic())
-
-	cfg.Version = "invalid"
-	assert.Error(t, cfg.ValidateBasic())
 }

 func TestConsensusConfig_ValidateBasic(t *testing.T) {
--- a/config/db.go
+++ b/config/db.go
@@ -1,9 +1,10 @@
 package config

 import (
+	dbm "github.com/tendermint/tm-db"
+
 	"github.com/tendermint/tendermint/libs/log"
 	"github.com/tendermint/tendermint/libs/service"
-	db "github.com/tendermint/tm-db"
 )

 // ServiceProvider takes a config and a logger and returns a ready to go Node.
@@ -16,11 +17,11 @@ type DBContext struct {
 }

 // DBProvider takes a DBContext and returns an instantiated DB.
-type DBProvider func(*DBContext) (db.DB, error)
+type DBProvider func(*DBContext) (dbm.DB, error)

 // DefaultDBProvider returns a database using the DBBackend and DBDir
 // specified in the Config.
-func DefaultDBProvider(ctx *DBContext) (db.DB, error) {
-	dbType := db.BackendType(ctx.Config.DBBackend)
-	return db.NewDB(ctx.ID, dbType, ctx.Config.DBDir())
+func DefaultDBProvider(ctx *DBContext) (dbm.DB, error) {
+	dbType := dbm.BackendType(ctx.Config.DBBackend)
+	return dbm.NewDB(ctx.ID, dbType, ctx.Config.DBDir())
 }
--- a/config/toml.go
+++ b/config/toml.go
@@ -159,15 +159,15 @@ state-file = "{{ js .PrivValidator.State }}"
 # when the listenAddr is prefixed with grpc instead of tcp it will use the gRPC Client
 laddr = "{{ .PrivValidator.ListenAddr }}"

-# Client certificate generated while creating needed files for secure connection.
+# Path to the client certificate generated while creating needed files for secure connection.
 # If a remote validator address is provided but no certificate, the connection will be insecure
 client-certificate-file = "{{ js .PrivValidator.ClientCertificate }}"

 # Client key generated while creating certificates for secure connection
-validator-client-key-file = "{{ js .PrivValidator.ClientKey }}"
+client-key-file = "{{ js .PrivValidator.ClientKey }}"

-# Path Root Certificate Authority used to sign both client and server certificates
-certificate-authority = "{{ js .PrivValidator.RootCA }}"
+# Path to the Root Certificate Authority used to sign both client and server certificates
+root-ca-file = "{{ js .PrivValidator.RootCA }}"


 #######################################################################
@@ -193,26 +193,10 @@ cors-allowed-methods = [{{ range .RPC.CORSAllowedMethods }}{{ printf "%q, " . }}
 # A list of non simple headers the client is allowed to use with cross-domain requests
 cors-allowed-headers = [{{ range .RPC.CORSAllowedHeaders }}{{ printf "%q, " . }}{{end}}]

-# TCP or UNIX socket address for the gRPC server to listen on
-# NOTE: This server only supports /broadcast_tx_commit
-# Deprecated gRPC  in the RPC layer of Tendermint will be deprecated in 0.36.
-grpc-laddr = "{{ .RPC.GRPCListenAddress }}"
-
-# Maximum number of simultaneous connections.
-# Does not include RPC (HTTP&WebSocket) connections. See max-open-connections
-# If you want to accept a larger number than the default, make sure
-# you increase your OS limits.
-# 0 - unlimited.
-# Should be < {ulimit -Sn} - {MaxNumInboundPeers} - {MaxNumOutboundPeers} - {N of wal, db and other open files}
-# 1024 - 40 - 10 - 50 = 924 = ~900
-# Deprecated gRPC  in the RPC layer of Tendermint will be deprecated in 0.36.
-grpc-max-open-connections = {{ .RPC.GRPCMaxOpenConnections }}
-
 # Activate unsafe RPC commands like /dial-seeds and /unsafe-flush-mempool
 unsafe = {{ .RPC.Unsafe }}

 # Maximum number of simultaneous connections (including WebSocket).
-# Does not include gRPC connections. See grpc-max-open-connections
 # If you want to accept a larger number than the default, make sure
 # you increase your OS limits.
 # 0 - unlimited.
@@ -226,8 +210,8 @@ max-open-connections = {{ .RPC.MaxOpenConnections }}
 max-subscription-clients = {{ .RPC.MaxSubscriptionClients }}

 # Maximum number of unique queries a given client can /subscribe to
-# If you're using GRPC (or Local RPC client) and /broadcast_tx_commit, set to
-# the estimated # maximum number of broadcast_tx_commit calls per block.
+# If you're using a Local RPC client and /broadcast_tx_commit, set this
+# to the estimated maximum number of broadcast_tx_commit calls per block.
 max-subscriptions-per-client = {{ .RPC.MaxSubscriptionsPerClient }}

 # How long to wait for a tx to be committed during /broadcast_tx_commit.
@@ -265,9 +249,6 @@ pprof-laddr = "{{ .RPC.PprofListenAddress }}"
 #######################################################
 [p2p]

-# Enable the legacy p2p layer.
-use-legacy = {{ .P2P.UseLegacy }}
-
 # Select the p2p internal queue
 queue-type = "{{ .P2P.QueueType }}"

@@ -299,52 +280,12 @@ persistent-peers = "{{ .P2P.PersistentPeers }}"
 # UPNP port forwarding
 upnp = {{ .P2P.UPNP }}

-# Path to address book
-# TODO: Remove once p2p refactor is complete in favor of peer store.
-addr-book-file = "{{ js .P2P.AddrBook }}"
-
-# Set true for strict address routability rules
-# Set false for private or local networks
-addr-book-strict = {{ .P2P.AddrBookStrict }}
-
-# Maximum number of inbound peers
-#
-# TODO: Remove once p2p refactor is complete in favor of MaxConnections.
-# ref: https://github.com/tendermint/tendermint/issues/5670
-max-num-inbound-peers = {{ .P2P.MaxNumInboundPeers }}
-
-# Maximum number of outbound peers to connect to, excluding persistent peers
-#
-# TODO: Remove once p2p refactor is complete in favor of MaxConnections.
-# ref: https://github.com/tendermint/tendermint/issues/5670
-max-num-outbound-peers = {{ .P2P.MaxNumOutboundPeers }}
-
 # Maximum number of connections (inbound and outbound).
 max-connections = {{ .P2P.MaxConnections }}

 # Rate limits the number of incoming connection attempts per IP address.
 max-incoming-connection-attempts = {{ .P2P.MaxIncomingConnectionAttempts }}

-# List of node IDs, to which a connection will be (re)established ignoring any existing limits
-# TODO: Remove once p2p refactor is complete.
-# ref: https://github.com/tendermint/tendermint/issues/5670
-unconditional-peer-ids = "{{ .P2P.UnconditionalPeerIDs }}"
-
-# Maximum pause when redialing a persistent peer (if zero, exponential backoff is used)
-persistent-peers-max-dial-period = "{{ .P2P.PersistentPeersMaxDialPeriod }}"
-
-# Time to wait before flushing messages out on the connection
-flush-throttle-timeout = "{{ .P2P.FlushThrottleTimeout }}"
-
-# Maximum size of a message packet payload, in bytes
-max-packet-msg-payload-size = {{ .P2P.MaxPacketMsgPayloadSize }}
-
-# Rate at which packets can be sent, in bytes/second
-send-rate = {{ .P2P.SendRate }}
-
-# Rate at which packets can be received, in bytes/second
-recv-rate = {{ .P2P.RecvRate }}
-
 # Set true to enable the peer-exchange reactor
 pex = {{ .P2P.PexReactor }}

@@ -437,8 +378,8 @@ rpc-servers = "{{ StringsJoin .StateSync.RPCServers "," }}"
 trust-height = {{ .StateSync.TrustHeight }}
 trust-hash = "{{ .StateSync.TrustHash }}"

-# The trust period should be set so that Tendermint can detect and gossip misbehavior before 
-# it is considered expired. For chains based on the Cosmos SDK, one day less than the unbonding 
+# The trust period should be set so that Tendermint can detect and gossip misbehavior before
+# it is considered expired. For chains based on the Cosmos SDK, one day less than the unbonding
 # period should suffice.
 trust-period = "{{ .StateSync.TrustPeriod }}"

@@ -467,11 +408,6 @@ fetchers = "{{ .StateSync.Fetchers }}"
 # and verifying their commits
 enable = {{ .BlockSync.Enable }}

-# Block Sync version to use:
-#   1) "v0" (default) - the standard Block Sync implementation
-#   2) "v2" - DEPRECATED, please use v0
-version = "{{ .BlockSync.Version }}"
-
 #######################################################
 ###         Consensus Configuration Options         ###
 #######################################################
@@ -519,7 +455,7 @@ peer-query-maj23-sleep-duration = "{{ .Consensus.PeerQueryMaj23SleepDuration }}"
 [tx-index]

 # The backend database list to back the indexer.
-# If list contains null, meaning no indexer service will be used.
+# If list contains "null" or "", meaning no indexer service will be used.
 #
 # The application will set which txs to index. In some cases a node operator will be able
 # to decide which txs to index based on configuration set in the application.
@@ -527,8 +463,8 @@ peer-query-maj23-sleep-duration = "{{ .Consensus.PeerQueryMaj23SleepDuration }}"
 # Options:
 #   1) "null"
 #   2) "kv" (default) - the simplest possible indexer, backed by key-value storage (defaults to levelDB; see DBBackend).
-# 		- When "kv" is chosen "tx.height" and "tx.hash" will always be indexed.
 #   3) "psql" - the indexer services backed by PostgreSQL.
+# When "kv" or "psql" is chosen "tx.height" and "tx.hash" will always be indexed.
 indexer = [{{ range $i, $e := .TxIndex.Indexer }}{{if $i}}, {{end}}{{ printf "%q" $e}}{{end}}]

 # The PostgreSQL connection configuration, the connection format:
--- a/crypto/armor/armor.go
+++ b/crypto/armor/armor.go
@@ -1,39 +0,0 @@
-package armor
-
-import (
-	"bytes"
-	"fmt"
-	"io/ioutil"
-
-	"golang.org/x/crypto/openpgp/armor"
-)
-
-func EncodeArmor(blockType string, headers map[string]string, data []byte) string {
-	buf := new(bytes.Buffer)
-	w, err := armor.Encode(buf, blockType, headers)
-	if err != nil {
-		panic(fmt.Errorf("could not encode ascii armor: %s", err))
-	}
-	_, err = w.Write(data)
-	if err != nil {
-		panic(fmt.Errorf("could not encode ascii armor: %s", err))
-	}
-	err = w.Close()
-	if err != nil {
-		panic(fmt.Errorf("could not encode ascii armor: %s", err))
-	}
-	return buf.String()
-}
-
-func DecodeArmor(armorStr string) (blockType string, headers map[string]string, data []byte, err error) {
-	buf := bytes.NewBufferString(armorStr)
-	block, err := armor.Decode(buf)
-	if err != nil {
-		return "", nil, nil, err
-	}
-	data, err = ioutil.ReadAll(block.Body)
-	if err != nil {
-		return "", nil, nil, err
-	}
-	return block.Type, block.Header, data, nil
-}
--- a/crypto/armor/armor_test.go
+++ b/crypto/armor/armor_test.go
@@ -1,20 +0,0 @@
-package armor
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-)
-
-func TestArmor(t *testing.T) {
-	blockType := "MINT TEST"
-	data := []byte("somedata")
-	armorStr := EncodeArmor(blockType, nil, data)
-
-	// Decode armorStr and test for equivalence.
-	blockType2, _, data2, err := DecodeArmor(armorStr)
-	require.Nil(t, err, "%+v", err)
-	assert.Equal(t, blockType, blockType2)
-	assert.Equal(t, data, data2)
-}
--- a/crypto/encoding/codec.go
+++ b/crypto/encoding/codec.go
@@ -8,34 +8,34 @@ import (
 	"github.com/tendermint/tendermint/crypto/secp256k1"
 	"github.com/tendermint/tendermint/crypto/sr25519"
 	"github.com/tendermint/tendermint/libs/json"
-	pc "github.com/tendermint/tendermint/proto/tendermint/crypto"
+	cryptoproto "github.com/tendermint/tendermint/proto/tendermint/crypto"
 )

 func init() {
-	json.RegisterType((*pc.PublicKey)(nil), "tendermint.crypto.PublicKey")
-	json.RegisterType((*pc.PublicKey_Ed25519)(nil), "tendermint.crypto.PublicKey_Ed25519")
-	json.RegisterType((*pc.PublicKey_Secp256K1)(nil), "tendermint.crypto.PublicKey_Secp256K1")
+	json.RegisterType((*cryptoproto.PublicKey)(nil), "tendermint.crypto.PublicKey")
+	json.RegisterType((*cryptoproto.PublicKey_Ed25519)(nil), "tendermint.crypto.PublicKey_Ed25519")
+	json.RegisterType((*cryptoproto.PublicKey_Secp256K1)(nil), "tendermint.crypto.PublicKey_Secp256K1")
 }

 // PubKeyToProto takes crypto.PubKey and transforms it to a protobuf Pubkey
-func PubKeyToProto(k crypto.PubKey) (pc.PublicKey, error) {
-	var kp pc.PublicKey
+func PubKeyToProto(k crypto.PubKey) (cryptoproto.PublicKey, error) {
+	var kp cryptoproto.PublicKey
 	switch k := k.(type) {
 	case ed25519.PubKey:
-		kp = pc.PublicKey{
-			Sum: &pc.PublicKey_Ed25519{
+		kp = cryptoproto.PublicKey{
+			Sum: &cryptoproto.PublicKey_Ed25519{
 				Ed25519: k,
 			},
 		}
 	case secp256k1.PubKey:
-		kp = pc.PublicKey{
-			Sum: &pc.PublicKey_Secp256K1{
+		kp = cryptoproto.PublicKey{
+			Sum: &cryptoproto.PublicKey_Secp256K1{
 				Secp256K1: k,
 			},
 		}
 	case sr25519.PubKey:
-		kp = pc.PublicKey{
-			Sum: &pc.PublicKey_Sr25519{
+		kp = cryptoproto.PublicKey{
+			Sum: &cryptoproto.PublicKey_Sr25519{
 				Sr25519: k,
 			},
 		}
@@ -46,9 +46,9 @@ func PubKeyToProto(k crypto.PubKey) (pc.PublicKey, error) {
 }

 // PubKeyFromProto takes a protobuf Pubkey and transforms it to a crypto.Pubkey
-func PubKeyFromProto(k pc.PublicKey) (crypto.PubKey, error) {
+func PubKeyFromProto(k cryptoproto.PublicKey) (crypto.PubKey, error) {
 	switch k := k.Sum.(type) {
-	case *pc.PublicKey_Ed25519:
+	case *cryptoproto.PublicKey_Ed25519:
 		if len(k.Ed25519) != ed25519.PubKeySize {
 			return nil, fmt.Errorf("invalid size for PubKeyEd25519. Got %d, expected %d",
 				len(k.Ed25519), ed25519.PubKeySize)
@@ -56,7 +56,7 @@ func PubKeyFromProto(k pc.PublicKey) (crypto.PubKey, error) {
 		pk := make(ed25519.PubKey, ed25519.PubKeySize)
 		copy(pk, k.Ed25519)
 		return pk, nil
-	case *pc.PublicKey_Secp256K1:
+	case *cryptoproto.PublicKey_Secp256K1:
 		if len(k.Secp256K1) != secp256k1.PubKeySize {
 			return nil, fmt.Errorf("invalid size for PubKeySecp256k1. Got %d, expected %d",
 				len(k.Secp256K1), secp256k1.PubKeySize)
@@ -64,7 +64,7 @@ func PubKeyFromProto(k pc.PublicKey) (crypto.PubKey, error) {
 		pk := make(secp256k1.PubKey, secp256k1.PubKeySize)
 		copy(pk, k.Secp256K1)
 		return pk, nil
-	case *pc.PublicKey_Sr25519:
+	case *cryptoproto.PublicKey_Sr25519:
 		if len(k.Sr25519) != sr25519.PubKeySize {
 			return nil, fmt.Errorf("invalid size for PubKeySr25519. Got %d, expected %d",
 				len(k.Sr25519), sr25519.PubKeySize)
--- a/crypto/secp256k1/secp256k1_nocgo.go
+++ b/crypto/secp256k1/secp256k1_nocgo.go
@@ -1,3 +1,4 @@
+//go:build !libsecp256k1
 // +build !libsecp256k1

 package secp256k1
--- a/crypto/secp256k1/secp256k1_test.go
+++ b/crypto/secp256k1/secp256k1_test.go
@@ -5,14 +5,13 @@ import (
 	"math/big"
 	"testing"

+	underlyingSecp256k1 "github.com/btcsuite/btcd/btcec"
 	"github.com/btcsuite/btcutil/base58"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"

 	"github.com/tendermint/tendermint/crypto"
 	"github.com/tendermint/tendermint/crypto/secp256k1"
-
-	underlyingSecp256k1 "github.com/btcsuite/btcd/btcec"
 )

 type keyData struct {
--- a/crypto/xchacha20poly1305/xchachapoly_test.go
+++ b/crypto/xchacha20poly1305/xchachapoly_test.go
@@ -2,8 +2,8 @@ package xchacha20poly1305

 import (
 	"bytes"
-	cr "crypto/rand"
-	mr "math/rand"
+	crand "crypto/rand"
+	mrand "math/rand"
 	"testing"
 )

@@ -19,23 +19,23 @@ func TestRandom(t *testing.T) {
 		var nonce [24]byte
 		var key [32]byte

-		al := mr.Intn(128)
-		pl := mr.Intn(16384)
+		al := mrand.Intn(128)
+		pl := mrand.Intn(16384)
 		ad := make([]byte, al)
 		plaintext := make([]byte, pl)
-		_, err := cr.Read(key[:])
+		_, err := crand.Read(key[:])
 		if err != nil {
 			t.Errorf("error on read: %w", err)
 		}
-		_, err = cr.Read(nonce[:])
+		_, err = crand.Read(nonce[:])
 		if err != nil {
 			t.Errorf("error on read: %w", err)
 		}
-		_, err = cr.Read(ad)
+		_, err = crand.Read(ad)
 		if err != nil {
 			t.Errorf("error on read: %w", err)
 		}
-		_, err = cr.Read(plaintext)
+		_, err = crand.Read(plaintext)
 		if err != nil {
 			t.Errorf("error on read: %w", err)
 		}
@@ -59,7 +59,7 @@ func TestRandom(t *testing.T) {
 		}

 		if len(ad) > 0 {
-			alterAdIdx := mr.Intn(len(ad))
+			alterAdIdx := mrand.Intn(len(ad))
 			ad[alterAdIdx] ^= 0x80
 			if _, err := aead.Open(nil, nonce[:], ct, ad); err == nil {
 				t.Errorf("random #%d: Open was successful after altering additional data", i)
@@ -67,14 +67,14 @@ func TestRandom(t *testing.T) {
 			ad[alterAdIdx] ^= 0x80
 		}

-		alterNonceIdx := mr.Intn(aead.NonceSize())
+		alterNonceIdx := mrand.Intn(aead.NonceSize())
 		nonce[alterNonceIdx] ^= 0x80
 		if _, err := aead.Open(nil, nonce[:], ct, ad); err == nil {
 			t.Errorf("random #%d: Open was successful after altering nonce", i)
 		}
 		nonce[alterNonceIdx] ^= 0x80

-		alterCtIdx := mr.Intn(len(ct))
+		alterCtIdx := mrand.Intn(len(ct))
 		ct[alterCtIdx] ^= 0x80
 		if _, err := aead.Open(nil, nonce[:], ct, ad); err == nil {
 			t.Errorf("random #%d: Open was successful after altering ciphertext", i)
--- a/docs/.vuepress/config.js
+++ b/docs/.vuepress/config.js
@@ -48,10 +48,6 @@ module.exports = {
        {
          title: 'Resources',
          children: [
-            {
-              title: 'Developer Sessions',
-              path: '/DEV_SESSIONS.html'
-            },
            {
              title: 'RPC',
              path: 'https://docs.tendermint.com/master/rpc/',
@@ -78,7 +74,7 @@ module.exports = {
    },
    footer: {
      question: {
-        text: 'Chat with Tendermint developers in <a href=\'https://discord.gg/vcExX9T\' target=\'_blank\'>Discord</a> or reach out on the <a href=\'https://forum.cosmos.network/c/tendermint\' target=\'_blank\'>Tendermint Forum</a> to learn more.'
+        text: 'Chat with Tendermint developers in <a href=\'https://discord.gg/cosmosnetwork\' target=\'_blank\'>Discord</a> or reach out on the <a href=\'https://forum.cosmos.network/c/tendermint\' target=\'_blank\'>Tendermint Forum</a> to learn more.'
      },
      logo: '/logo-bw.svg',
      textLink: {
--- a/docs/DOCS_README.md
+++ b/docs/DOCS_README.md
@@ -2,17 +2,27 @@

 The documentation for Tendermint Core is hosted at:

- <https://docs.tendermint.com/master/>
+- <https://docs.tendermint.com/>

-built from the files in this (`/docs`) directory for
-[master](https://github.com/tendermint/tendermint/tree/master/docs) respectively.
+built from the files in this [`docs` directory for `master`](https://github.com/tendermint/tendermint/tree/master/docs)
+and other supported release branches.

 ## How It Works

-There is a CircleCI job listening for changes in the `/docs` directory, on both
-the `master` branch. Any updates to files in this directory
-on those branches will automatically trigger a website deployment. Under the hood,
-the private website repository has a `make build-docs` target consumed by a CircleCI job in that repo.
+There is a [GitHub Actions workflow](https://github.com/tendermint/docs/actions/workflows/deployment.yml)
+in the `tendermint/docs` repository that clones and builds the documentation
+site from the contents of this `docs` directory, for `master` and for each
+supported release branch. Under the hood, this workflow runs `make build-docs`
+from the [Makefile](../Makefile#L214).
+
+The list of supported versions are defined in [`config.js`](./.vuepress/config.js),
+which defines the UI menu on the documentation site, and also in
+[`docs/versions`](./versions), which determines which branches are built.
+
+The last entry in the `docs/versions` file determines which version is linked
+by default from the generated `index.html`. This should generally be the most
+recent release, rather than `master`, so that new users are not confused by
+documentation for unreleased features.

 ## README

--- a/docs/app-dev/readme.md
+++ b/docs/app-dev/readme.md
@@ -1,7 +1,6 @@
 ---
 order: false
 parent:
+  title: "Building Applications"
  order: 3
---
-
-# Apps
+---
--- a/docs/architecture/adr-065-custom-event-indexing.md
+++ b/docs/architecture/adr-065-custom-event-indexing.md
@@ -25,6 +25,7 @@
 - April 28, 2021: Specify search capabilities are only supported through the KV indexer (@marbar3778)
 - May 19, 2021: Update the SQL schema and the eventsink interface (@jayt106)
 - Aug 30, 2021: Update the SQL schema and the psql implementation (@creachadair)
+- Oct 5, 2021: Clarify goals and implementation changes (@creachadair)

 ## Status

@@ -73,19 +74,38 @@ the database used.
 We will adopt a similar approach to that of the Cosmos SDK's `KVStore` state
 listening described in [ADR-038](https://github.com/cosmos/cosmos-sdk/blob/master/docs/architecture/adr-038-state-listening.md).

-Namely, we will perform the following:
+We will implement the following changes:

 - Introduce a new interface, `EventSink`, that all data sinks must implement.
 - Augment the existing `tx_index.indexer` configuration to now accept a series
-  of one or more indexer types, i.e sinks.
+  of one or more indexer types, i.e., sinks.
 - Combine the current `TxIndexer` and `BlockIndexer` into a single `KVEventSink`
  that implements the `EventSink` interface.
- Introduce an additional `EventSink` that is backed by [PostgreSQL](https://www.postgresql.org/).
-  - Implement the necessary schemas to support both block and transaction event
-  indexing.
+- Introduce an additional `EventSink` implementation that is backed by
+  [PostgreSQL](https://www.postgresql.org/).
+  - Implement the necessary schemas to support both block and transaction event indexing.
 - Update `IndexerService` to use a series of `EventSinks`.
- Proxy queries to the relevant sink's native query layer.
- Update all relevant RPC methods.
+
+In addition:
+
+- The Postgres indexer implementation will _not_ implement the proprietary `kv`
+  query language. Users wishing to write queries against the Postgres indexer
+  will connect to the underlying DBMS directly and use SQL queries based on the
+  indexing schema.
+
+  Future custom indexer implementations will not be required to support the
+  proprietary query language either.
+
+- For now, the existing `kv` indexer will be left in place with its current
+  query support, but will be marked as deprecated in a subsequent release, and
+  the documentation will be updated to encourage users who need to query the
+  event index to migrate to the Postgres indexer.
+
+- In the future we may remove the `kv` indexer entirely, or replace it with a
+  different implementation; that decision is deferred as future work.
+
+- In the future, we may remove the index query endpoints from the RPC service
+  entirely; that decision is deferred as future work, but recommended.


 ## Detailed Design
--- a/docs/networks/README.md
+++ b/docs/networks/README.md
@@ -1,16 +0,0 @@
---
-order: 1
-parent:
-  title: Networks
-  order: 6
---
-
-# Overview
-
-Use [Docker Compose](./docker-compose.md) to spin up Tendermint testnets on your
-local machine.
-
-Use [Terraform and Ansible](./terraform-and-ansible.md) to deploy Tendermint
-testnets to the cloud.
-
-See the `tendermint testnet --help` command for more help initializing testnets.
--- a/docs/nodes/README.md
+++ b/docs/nodes/README.md
@@ -1,7 +1,7 @@
 ---
 order: 1
 parent:
-  title: Nodes
+  title: Node Operators
  order: 4
 ---

--- a/docs/nodes/configuration.md
+++ b/docs/nodes/configuration.md
@@ -16,8 +16,7 @@ the parameters set with their default values. It will look something
 like the file below, however, double check by inspecting the
 `config.toml` created with your version of `tendermint` installed:

-```toml
-# This is a TOML config file.
+```toml# This is a TOML config file.
 # For more information, see https://github.com/toml-lang/toml

 # NOTE: Any path below can be absolute (e.g. "/var/myawesomeapp/data") or
@@ -34,14 +33,14 @@ like the file below, however, double check by inspecting the
 proxy-app = "tcp://127.0.0.1:26658"

 # A custom human readable name for this node
-moniker = "anonymous"
+moniker = "ape"


 # Mode of Node: full | validator | seed (default: "validator")
 # * validator node (default)
 #   - all reactors
 #   - with priv_validator_key.json, priv_validator_state.json
-# * full node 
+# * full node
 #   - all reactors
 #   - No priv_validator_key.json, priv_validator_state.json
 # * seed node
@@ -49,6 +48,11 @@ moniker = "anonymous"
 #   - No priv_validator_key.json, priv_validator_state.json
 mode = "validator"

+# If this node is many blocks behind the tip of the chain, FastSync
+# allows them to catchup quickly by downloading blocks in parallel
+# and verifying their commits
+fast-sync = true
+
 # Database backend: goleveldb | cleveldb | boltdb | rocksdb | badgerdb
 # * goleveldb (github.com/syndtr/goleveldb - most popular implementation)
 #   - pure go
@@ -84,16 +88,6 @@ log-format = "plain"
 # Path to the JSON file containing the initial validator set and other meta data
 genesis-file = "config/genesis.json"

-# Path to the JSON file containing the private key to use as a validator in the consensus protocol
-priv-validator-key-file = "config/priv_validator_key.json"
-
-# Path to the JSON file containing the last sign state of a validator
-priv-validator-state-file = "data/priv_validator_state.json"
-
-# TCP or UNIX socket address for Tendermint to listen on for
-# connections from an external PrivValidator process
-priv-validator-laddr = ""
-
 # Path to the JSON file containing the private key to use for node authentication in the p2p protocol
 node-key-file = "config/node_key.json"

@@ -105,6 +99,33 @@ abci = "socket"
 filter-peers = false


+#######################################################
+###       Priv Validator Configuration              ###
+#######################################################
+[priv-validator]
+
+# Path to the JSON file containing the private key to use as a validator in the consensus protocol
+key-file = "config/priv_validator_key.json"
+
+# Path to the JSON file containing the last sign state of a validator
+state-file = "data/priv_validator_state.json"
+
+# TCP or UNIX socket address for Tendermint to listen on for
+# connections from an external PrivValidator process
+# when the listenAddr is prefixed with grpc instead of tcp it will use the gRPC Client
+laddr = ""
+
+# Path to the client certificate generated while creating needed files for secure connection.
+# If a remote validator address is provided but no certificate, the connection will be insecure
+client-certificate-file = ""
+
+# Client key generated while creating certificates for secure connection
+validator-client-key-file = ""
+
+# Path to the Root Certificate Authority used to sign both client and server certificates
+certificate-authority = ""
+
+
 #######################################################################
 ###                 Advanced Configuration Options                  ###
 #######################################################################
@@ -130,6 +151,7 @@ cors-allowed-headers = ["Origin", "Accept", "Content-Type", "X-Requested-With",

 # TCP or UNIX socket address for the gRPC server to listen on
 # NOTE: This server only supports /broadcast_tx_commit
+# Deprecated gRPC  in the RPC layer of Tendermint will be deprecated in 0.36.
 grpc-laddr = ""

 # Maximum number of simultaneous connections.
@@ -139,9 +161,10 @@ grpc-laddr = ""
 # 0 - unlimited.
 # Should be < {ulimit -Sn} - {MaxNumInboundPeers} - {MaxNumOutboundPeers} - {N of wal, db and other open files}
 # 1024 - 40 - 10 - 50 = 924 = ~900
+# Deprecated gRPC  in the RPC layer of Tendermint will be deprecated in 0.36.
 grpc-max-open-connections = 900

-# Activate unsafe RPC commands like /dial_seeds and /unsafe_flush_mempool
+# Activate unsafe RPC commands like /dial-seeds and /unsafe-flush-mempool
 unsafe = false

 # Maximum number of simultaneous connections (including WebSocket).
@@ -198,18 +221,31 @@ pprof-laddr = ""
 #######################################################
 [p2p]

+# Select the p2p internal queue
+queue-type = "priority"
+
 # Address to listen for incoming connections
 laddr = "tcp://0.0.0.0:26656"

 # Address to advertise to peers for them to dial
 # If empty, will use the same port as the laddr,
 # and will introspect on the listener or use UPnP
-# to figure out the address.
+# to figure out the address. ip and port are required
+# example: 159.89.10.97:26656
 external-address = ""

 # Comma separated list of seed nodes to connect to
+# We only use these if we can’t connect to peers in the addrbook
+# NOTE: not used by the new PEX reactor. Please use BootstrapPeers instead.
+# TODO: Remove once p2p refactor is complete
+# ref: https:#github.com/tendermint/tendermint/issues/5670
 seeds = ""

+# Comma separated list of peers to be added to the peer store
+# on startup. Either BootstrapPeers or PersistentPeers are
+# needed for peer discovery
+bootstrap-peers = ""
+
 # Comma separated list of nodes to keep persistent connections to
 persistent-peers = ""

@@ -217,6 +253,8 @@ persistent-peers = ""
 upnp = false

 # Path to address book
+# TODO: Remove once p2p refactor is complete
+# ref: https:#github.com/tendermint/tendermint/issues/5670
 addr-book-file = "config/addrbook.json"

 # Set true for strict address routability rules
@@ -224,9 +262,15 @@ addr-book-file = "config/addrbook.json"
 addr-book-strict = true

 # Maximum number of inbound peers
+#
+# TODO: Remove once p2p refactor is complete in favor of MaxConnections.
+# ref: https://github.com/tendermint/tendermint/issues/5670
 max-num-inbound-peers = 40

 # Maximum number of outbound peers to connect to, excluding persistent peers
+#
+# TODO: Remove once p2p refactor is complete in favor of MaxConnections.
+# ref: https://github.com/tendermint/tendermint/issues/5670
 max-num-outbound-peers = 10

 # Maximum number of connections (inbound and outbound).
@@ -236,27 +280,40 @@ max-connections = 64
 max-incoming-connection-attempts = 100

 # List of node IDs, to which a connection will be (re)established ignoring any existing limits
+# TODO: Remove once p2p refactor is complete
+# ref: https:#github.com/tendermint/tendermint/issues/5670
 unconditional-peer-ids = ""

 # Maximum pause when redialing a persistent peer (if zero, exponential backoff is used)
+# TODO: Remove once p2p refactor is complete
+# ref: https:#github.com/tendermint/tendermint/issues/5670
 persistent-peers-max-dial-period = "0s"

 # Time to wait before flushing messages out on the connection
+# TODO: Remove once p2p refactor is complete
+# ref: https:#github.com/tendermint/tendermint/issues/5670
 flush-throttle-timeout = "100ms"

 # Maximum size of a message packet payload, in bytes
-max-packet-msg-payload-size = 1024
+# TODO: Remove once p2p refactor is complete
+# ref: https:#github.com/tendermint/tendermint/issues/5670
+max-packet-msg-payload-size = 1400

 # Rate at which packets can be sent, in bytes/second
+# TODO: Remove once p2p refactor is complete
+# ref: https:#github.com/tendermint/tendermint/issues/5670
 send-rate = 5120000

 # Rate at which packets can be received, in bytes/second
+# TODO: Remove once p2p refactor is complete
+# ref: https:#github.com/tendermint/tendermint/issues/5670
 recv-rate = 5120000

 # Set true to enable the peer-exchange reactor
 pex = true

 # Comma separated list of peer IDs to keep private (will not be gossiped to other peers)
+# Warning: IPs will be exposed at /net_info, for more information https://github.com/tendermint/tendermint/issues/3055
 private-peer-ids = ""

 # Toggle to disable guard against peers connecting from the same ip.
@@ -349,8 +406,15 @@ discovery-time = "15s"
 # Will create a new, randomly named directory within, and remove it when done.
 temp-dir = ""

+# The timeout duration before re-requesting a chunk, possibly from a different
+# peer (default: 15 seconds).
+chunk-request-timeout = "15s"
+
+# The number of concurrent chunk and block fetchers to run (default: 4).
+fetchers = "4"
+
 #######################################################
-###       BlockSync Configuration Connections       ###
+###       Block Sync Configuration Connections       ###
 #######################################################
 [blocksync]

@@ -410,7 +474,8 @@ peer-query-maj23-sleep-duration = "2s"
 #######################################################
 [tx-index]

-# What indexer to use for transactions
+# The backend database list to back the indexer.
+# If list contains "null" or "", meaning no indexer service will be used.
 #
 # The application will set which txs to index. In some cases a node operator will be able
 # to decide which txs to index based on configuration set in the application.
@@ -418,8 +483,13 @@ peer-query-maj23-sleep-duration = "2s"
 # Options:
 #   1) "null"
 #   2) "kv" (default) - the simplest possible indexer, backed by key-value storage (defaults to levelDB; see DBBackend).
-#   - When "kv" is chosen "tx.height" and "tx.hash" will always be indexed.
-indexer = "kv"
+#   3) "psql" - the indexer services backed by PostgreSQL.
+# When "kv" or "psql" is chosen "tx.height" and "tx.hash" will always be indexed.
+indexer = ["kv"]
+
+# The PostgreSQL connection configuration, the connection format:
+#   postgresql://<user>:<password>@<host>:<port>/<db>?<opts>
+psql-conn = ""

 #######################################################
 ###       Instrumentation Configuration Options     ###
@@ -520,10 +590,61 @@ This section will cover settings within the p2p section of the `config.toml`.

 - `external-address` = is the address that will be advertised for other nodes to use. We recommend setting this field with your public IP and p2p port.
  - > We recommend setting an external address. When used in a private network, Tendermint Core currently doesn't advertise the node's public address. There is active and ongoing work to improve the P2P system, but this is a helpful workaround for now.
- `seeds` = is a list of comma separated seed nodes that you will connect upon a start and ask for peers. A seed node is a node that does not participate in consensus but only helps propagate peers to nodes in the networks
 - `persistent-peers` = is a list of comma separated peers that you will always want to be connected to. If you're already connected to the maximum number of peers, persistent peers will not be added.
- `max-num-inbound-peers` = is the maximum number of peers you will accept inbound connections from at one time (where they dial your address and initiate the connection).
- `max-num-outbound-peers` = is the maximum number of peers you will initiate outbound connects to at one time (where you dial their address and initiate the connection).
- `unconditional-peer-ids` = is similar to `persistent-peers` except that these peers will be connected to even if you are already connected to the maximum number of peers. This can be a validator node ID on your sentry node.
 - `pex` = turns the peer exchange reactor on or off. Validator node will want the `pex` turned off so it would not begin gossiping to unknown peers on the network. PeX can also be turned off for statically configured networks with fixed network connectivity. For full nodes on open, dynamic networks, it should be turned on.
 - `private-peer-ids` = is a comma-separated list of node ids that will _not_ be exposed to other peers (i.e., you will not tell other peers about the ids in this list). This can be filled with a validator's node id.
+
+Recently the Tendermint Team conducted a refactor of the p2p layer. This lead to multiple config paramters being deprecated and/or replaced. 
+
+We will cover the new and deprecated parameters below.
+### New Parameters
+
+There are three new parameters, which are enabled if use-legacy is set to false.
+
+- `queue-type` = sets a type of queue to use in the p2p layer. There are three options available `fifo`, `priority` and `wdrr`. The default is priority
+- `bootstrap-peers` = is a list of comma seperated peers which will be used to bootstrap the address book. 
+- `max-connections` = is the max amount of allowed inbound and outbound connections.
+### Deprecated Parameters
+
+> Note: For Tendermint 0.35, there are two p2p implementations. The old version is used by deafult with the deprecated fields. The new implementation uses different config parameters, explained above.
+
+- `max-num-inbound-peers` = is the maximum number of peers you will accept inbound connections from at one time (where they dial your address and initiate the connection). *This was replaced by `max-connections`*
+- `max-num-outbound-peers` = is the maximum number of peers you will initiate outbound connects to at one time (where you dial their address and initiate the connection).*This was replaced by `max-connections`*
+- `unconditional-peer-ids` = is similar to `persistent-peers` except that these peers will be connected to even if you are already connected to the maximum number of peers. This can be a validator node ID on your sentry node. *Deprecated*
+- `seeds` = is a list of comma separated seed nodes that you will connect upon a start and ask for peers. A seed node is a node that does not participate in consensus but only helps propagate peers to nodes in the networks *Deprecated, replaced by bootstrap peers*
+
+## Indexing Settings
+
+Operators can configure indexing via the `[tx_index]` section. The `indexer`
+field takes a series of supported indexers. If `null` is included, indexing will
+be turned off regardless of other values provided.
+
+### Supported Indexers
+
+#### KV
+
+The `kv` indexer type is an embedded key-value store supported by the main
+underlying Tendermint database. Using the `kv` indexer type allows you to query
+for block and transaction events directly against Tendermint's RPC. However, the
+query syntax is limited and so this indexer type might be deprecated or removed
+entirely in the future.
+
+#### PostgreSQL
+
+The `psql` indexer type allows an operator to enable block and transaction event
+indexing by proxying it to an external PostgreSQL instance allowing for the events
+to be stored in relational models. Since the events are stored in a RDBMS, operators
+can leverage SQL to perform a series of rich and complex queries that are not
+supported by the `kv` indexer type. Since operators can leverage SQL directly,
+searching is not enabled for the `psql` indexer type via Tendermint's RPC -- any
+such query will fail.
+
+Note, the SQL schema is stored in `state/indexer/sink/psql/schema.sql` and operators
+must explicitly create the relations prior to starting Tendermint and enabling
+the `psql` indexer type.
+
+Example:
+
+```shell
+$ psql ... -f state/indexer/sink/psql/schema.sql
+```
--- a/docs/rfc/README.md
+++ b/docs/rfc/README.md
@@ -42,5 +42,6 @@ sections.
 - [RFC-002: Interprocess Communication](./rfc-002-ipc-ecosystem.md)
 - [RFC-003: Performance Taxonomy](./rfc-003-performance-questions.md)
 - [RFC-004: E2E Test Framework Enhancements](./rfc-004-e2e-framework.md)
+- [RFC-005: Event System](./rfc-005-event-system.rst)

 <!-- - [RFC-NNN: Title](./rfc-NNN-title.md) -->
--- a/docs/rfc/rfc-000-p2p-roadmap.rst
+++ b/docs/rfc/rfc-000-p2p-roadmap.rst
@@ -40,15 +40,15 @@ Critique of Current Peer-to-Peer Infrastructure

 The current (refactored) P2P stack is an improvement on the previous iteration
 (legacy), but as of 0.35, there remains room for improvement in the design and
-implementation of the P2P layer. 
+implementation of the P2P layer.

 Some limitations of the current stack include:

 - heavy reliance on buffering to avoid backups in the flow of components,
  which is fragile to maintain and can lead to unexpected memory usage
  patterns and forces the routing layer to make decisions about when messages
-  should be discarded. 
-  
+  should be discarded.
+
 - the current p2p stack relies on convention (rather than the compiler) to
  enforce the API boundaries and conventions between reactors and the router,
  making it very easy to write "wrong" reactor code or introduce a bad
@@ -64,7 +64,7 @@ Some limitations of the current stack include:
  difficult to expose that information to monitoring/observability tools. This
  general opacity also makes it difficult to interact with the peer system
  from other areas of the code base (e.g. tests, reactors).
-  
+
 - the legacy stack provided some control to operators to force the system to
  dial new peers or seed nodes or manipulate the topology of the system _in
  situ_. The current stack can't easily provide this, and while the new stack
@@ -94,16 +94,16 @@ blocksync and consensus) from procedure calls to message passing.
 This is a relatively simple change and could be implemented with the following
 components:

- a constant to represent "local" delivery as  the ``To``` field on
+- a constant to represent "local" delivery as  the ``To`` field on
  ``p2p.Envelope``.
-  
+
 - special path for routing local messages that doesn't require message
  serialization (protobuf marshalling/unmarshaling).
-  
+
 Adding these semantics, particularly if in conjunction with synchronous
 semantics provides a solution to dependency graph problems currently present
 in the Tendermint codebase, which will simplify development, make it possible
-to isolate components for testing. 
+to isolate components for testing.

 Eventually, this will also make it possible to have a logical Tendermint node
 running in multiple processes or in a collection of containers, although the
@@ -129,7 +129,7 @@ of request/response ID to allow identifying out-of-order responses over a
 single connection. Additionally, expanded the programming model of the
 ``p2p.Channel`` to accommodate some kind of _future_ or similar paradigm to
 make it viable to write reactor code without needing for the reactor developer
-to wrestle with lower level concurency constructs.
+to wrestle with lower level concurrency constructs.


 Timeout Handling (QoS)
@@ -143,7 +143,7 @@ detect or attribute. Additionally, the current system provides three main
 parameters to control quality of service:

 - buffer sizes for channels and queues.
-  
+
 - priorities for channels

 - queue implementation details for shedding load.
@@ -151,13 +151,13 @@ parameters to control quality of service:
 These end up being quite coarse controls, and changing the settings are
 difficult because as the queues and channels are able to buffer large numbers
 of messages it can be hard to see the impact of a given change, particularly
-in our extant test environment. In general, we should endeavor to: 
+in our extant test environment. In general, we should endeavor to:

 - set real timeouts, via contexts, on most message send operations, so that
  senders rather than queues can be responsible for timeout
  logic. Additionally, this will make it possible to avoid sending messages
  during shutdown.
-  
+
 - reduce (to the greatest extent possible) the amount of buffering in
  channels and the queues, to more readily surface backpressure and reduce the
  potential for buildup of stale messages.
@@ -173,8 +173,8 @@ transport types and makes it more likely that message-based caching and rate
 limiting will be implemented at the transport layer rather than at a more
 appropriate level.

-The transport then, would be responsible for negitating the connection and the
-handshake and otherwise behave like a socket/file discriptor with ``Read` and
+The transport then, would be responsible for negotiating the connection and the
+handshake and otherwise behave like a socket/file descriptor with ``Read`` and
 ``Write`` methods.

 While this was included in the initial design for the new P2P layer, it may be
@@ -185,7 +185,7 @@ Service Discovery
 ~~~~~~~~~~~~~~~~~

 In the current system, Tendermint assumes that all nodes in a network are
-largely equivelent, and nodes tend to be "chatty" making many requests of
+largely equivalent, and nodes tend to be "chatty" making many requests of
 large numbers of peers and waiting for peers to (hopefully) respond. While
 this works and has allowed Tendermint to get to a certain point, this both
 produces a theoretical scaling bottle neck and makes it harder to test and
@@ -194,7 +194,7 @@ verify components of the system.
 In addition to peer's identity and connection information, peers should be
 able to advertise a number of services or capabilities, and node operators or
 developers should be able to specify peer capability requirements (e.g. target
-at least <x>-percent of peers with <y> capability.)  
+at least <x>-percent of peers with <y> capability.)

 These capabilities may be useful in selecting peers to send messages to, it
 may make sense to extend Tendermint's message addressing capability to allow
@@ -215,7 +215,7 @@ Continued Homegrown Implementation
 The current peer system is homegrown and is conceptually compatible with the
 needs of the project, and while there are limitations to the system, the p2p
 layer is not (currently as of 0.35) a major source of bugs or friction during
-development. 
+development.

 However, the current implementation makes a number of allowances for
 interoperability, and there are a collection of iterative improvements that
@@ -228,18 +228,18 @@ implementation, upcoming work would include:
  connections using different protocols (e.g. QUIC, etc.)

 - entirely remove the constructs and implementations of the legacy peer
-  implementation. 
-  
+  implementation.
+
 - establish and enforce clearer chains of responsibility for connection
  establishment (e.g. handshaking, setup,) which is currently shared between
-  three components. 
+  three components.

 - report better metrics regarding the into the state of peers and network
  connectivity, which are opaque outside of the system. This is constrained at
  the moment as a side effect of the split responsibility for connection
  establishment.
-  
- extend the PEX system to include service information so that ndoes in the
+
+- extend the PEX system to include service information so that nodes in the
  network weren't necessarily homogeneous.

 While maintaining a bespoke peer management layer would seem to distract from
@@ -272,20 +272,20 @@ case that our internal systems need to know much less about peers than
 otherwise specified. Similarly, the current system has a notion of peer
 scoring that cannot be communicated to libp2p, which may be fine as this is
 only used to support peer exchange (PEX,) which would become a property libp2p
-and not expressed in it's current higher-level form. 
+and not expressed in it's current higher-level form.

-In general, the effort to switch to libp2p would involve: 
+In general, the effort to switch to libp2p would involve:

 - timing it during an appropriate protocol-breaking window, as it doesn't seem
-  viable to support both libp2p *and* the current p2p protocol. 
-  
+  viable to support both libp2p *and* the current p2p protocol.
+
 - providing some in-memory testing network to support the use case that the
  current ``p2p.MemoryNetwork`` provides.

 - re-homing the ``p2p.Router`` implementation on top of libp2p components to
  be able to maintain the current reactor implementations.
-  
-Open question include: 
+
+Open question include:

 - how much local buffering should we be doing? It sort of seems like we should
  figure out what the expected behavior is for libp2p for QoS-type
@@ -302,7 +302,7 @@ Open question include:

 - how do efforts to select "the best" (healthy, close, well-behaving, etc.)
  peers work out if Tendermint is not maintaining a local peer database?
-  
+
 - would adding additional higher level semantics (internal message passing,
  request/response pairs, service discovery, etc.) facilitate removing some of
  the direct linkages between constructs/components in the system and reduce
@@ -311,6 +311,6 @@ Open question include:
 References
 ----------

- `Tracking Ticket for P2P Refactor Project <https://github.com/tendermint/tendermint/issues/5670>`_ 
+- `Tracking Ticket for P2P Refactor Project <https://github.com/tendermint/tendermint/issues/5670>`_
 - `ADR 61: P2P Refactor Scope <../architecture/adr-061-p2p-refactor-scope.md>`_
 - `ADR 62: P2P Architecture and Abstraction <../architecture/adr-061-p2p-architecture.md>`_
--- a/docs/rfc/rfc-005-event-system.rst
+++ b/docs/rfc/rfc-005-event-system.rst
@@ -0,0 +1,122 @@
+=====================
+RFC 005: Event System
+=====================
+
+Changelog
+---------
+
+- 2021-09-17: Initial Draft (@tychoish)
+
+Abstract
+--------
+
+The event system within Tendermint, which supports a lot of core
+functionality, also represents a major infrastructural liability. As part of
+our upcoming review of the RPC interfaces and our ongoing thoughts about
+stability and performance, as well as the preparation for Tendermint 1.0, we
+should revisit the design and implementation of the event system. This
+document discusses both the current state of the system and potential
+directions for future improvement.
+
+Background
+----------
+
+Current State of Events
+~~~~~~~~~~~~~~~~~~~~~~~
+
+The event system makes it possible for clients, both internal and external,
+to receive notifications of state replication events, such as new blocks,
+new transactions, validator set changes, as well as intermediate events during
+consensus. Because the event system is very cross cutting, the behavior and
+performance of the event publication and subscription system has huge impacts
+for all of Tendermint.
+
+The subscription service is exposed over the RPC interface, but also powers
+the indexing (e.g. to an external database,) and is the mechanism by which
+`BroadcastTxCommit` is able to wait for transactions to land in a block.
+
+The current pubsub mechanism relies on a couple of buffered channels,
+primarily between all event creators and subscribers, but also for each
+subscription. The result of this design is that, in some situations with the
+right collection of slow subscription consumers the event system can put
+backpressure on the consensus state machine and message gossiping in the
+network, thereby causing nodes to lag.
+
+Improvements
+~~~~~~~~~~~~
+
+The current system relies on implicit, bounded queues built by the buffered channels,
+and though threadsafe, can force all activity within Tendermint to serialize,
+which does not need to happen. Additionally, timeouts for subscription
+consumers related to the implementation of the RPC layer, may complicate the
+use of the system.
+
+References
+~~~~~~~~~~
+
+- Legacy Implementation
+  - `publication of events <https://github.com/tendermint/tendermint/blob/master/libs/pubsub/pubsub.go#L333-L345>`_ 
+  - `send operation <https://github.com/tendermint/tendermint/blob/master/libs/pubsub/pubsub.go#L489-L527>`_ 
+  - `send loop <https://github.com/tendermint/tendermint/blob/master/libs/pubsub/pubsub.go#L381-L402>`_
+- Related RFCs 
+  - `RFC 002: IPC Ecosystem <./rfc-002-ipc-ecosystem.md>`_ 
+  - `RFC 003: Performance Questions <./rfc-003-performance-questions.md>`_ 
+
+Discussion
+----------
+
+Changes to Published Events
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+As part of this process, the Tendermint team should do a study of the existing
+event types and ensure that there are viable production use cases for
+subscriptions to all event types. Instinctively it seems plausible that some
+of the events may not be useable outside of tendermint, (e.g. ``TimeoutWait``
+or ``NewRoundStep``) and it might make sense to remove them. Certainly, it
+would be good to make sure that we don't maintain infrastructure for unused or
+un-useful message indefinitely.
+
+Blocking Subscription
+~~~~~~~~~~~~~~~~~~~~~
+
+The blocking subscription mechanism makes it possible to have *send*
+operations into the subscription channel be un-buffered (the event processing
+channel is still buffered.) In the blocking case, events from one subscription
+can block processing that event for other non-blocking subscriptions. The main
+case, it seems for blocking subscriptions is ensuring that a transaction has
+been committed to a block for ``BroadcastTxCommit``. Removing blocking
+subscriptions entirely, and potentially finding another way to implement
+``BroadcastTxCommit``, could lead to important simplifications and
+improvements to throughput without requiring large changes.
+
+Subscription Identification
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Before `#6386 <https://github.com/tendermint/tendermint/pull/6386>`_, all
+subscriptions were identified by the combination of a client ID and a query,
+and with that change, it became possible to identify all subscription given
+only an ID, but compatibility with the legacy identification means that there's a
+good deal of legacy code as well as client side efficiency that could be
+improved. 
+
+Pubsub Changes
+~~~~~~~~~~~~~~
+
+The pubsub core should be implemented in a way that removes the possibility of
+backpressure from the event system to impact the core system *or* for one
+subscription to impact the behavior of another area of the
+system. Additionally, because the current system is implemented entirely in
+terms of a collection of buffered channels, the event system (and large
+numbers of subscriptions) can be a source of memory pressure. 
+
+These changes could include: 
+
+- explicit cancellation and timeouts promulgated from callers (e.g. RPC end
+  points, etc,) this should be done using contexts.
+
+- subscription system should be able to spill to disk to avoid putting memory
+  pressure on the core behavior of the node (consensus, gossip).
+  
+- subscriptions implemented as cursors rather than channels, with either
+  condition variables to simulate the existing "push" API or a client side
+  iterator API with some kind of long polling-type interface. 
--- a/docs/roadmap/roadmap.md
+++ b/docs/roadmap/roadmap.md
@@ -0,0 +1,100 @@
+---
+order: false
+parent:
+  title: Roadmap
+  order: 7
+---
+
+# Tendermint Roadmap
+
+*Last Updated: Friday 8 October 2021*
+
+This document endeavours to inform the wider Tendermint community about development plans and priorities for Tendermint Core, and when we expect features to be delivered. It is intended to broadly inform all users of Tendermint, including application developers, node operators, integrators, and the engineering and research teams.
+
+Anyone wishing to propose work to be a part of this roadmap should do so by opening an [issue](https://github.com/tendermint/spec/issues/new/choose) in the spec. Bug reports and other implementation concerns should be brought up in the [core repository](https://github.com/tendermint/tendermint).
+
+This roadmap should be read as a high-level guide to plans and priorities, rather than a commitment to schedules and deliverables. Features earlier on the roadmap will generally be more specific and detailed than those later on. We will update this document periodically to reflect the current status.
+
+The upgrades are split into two components: **Epics**, the features that define a release and to a large part dictate the timing of releases; and **minors**, features of smaller scale and lower priority, that could land in neighboring releases.
+
+## V0.35 (completed Q3 2021)
+
+### Prioritized Mempool
+
+Transactions were previously added to blocks in the order with which they arrived to the mempool. Adding a priority field via `CheckTx` gives applications more control over which transactions make it into a block. This is important in the presence of transaction fees. [More](https://github.com/tendermint/tendermint/blob/master/docs/architecture/adr-067-mempool-refactor.md)
+
+### Refactor of the P2P Framework
+
+The Tendermint P2P system is undergoing a large redesign to improve its performance and reliability. The first phase of this redesign is included in 0.35. This phase cleans and decouples abstractions, improves peer lifecycle management, peer address handling and enables pluggable transports. It is implemented to be protocol-compatible with the previous implementation. [More](https://github.com/tendermint/tendermint/blob/master/docs/architecture/adr-062-p2p-architecture.md)
+
+### State Sync Improvements
+
+Following the initial version of state sync, several improvements have been made. These include the addition of [Reverse Sync](https://github.com/tendermint/tendermint/blob/master/docs/architecture/adr-068-reverse-sync.md) needed for evidence handling, the introduction of a [P2P State Provider](https://github.com/tendermint/tendermint/pull/6807) as an alternative to RPC endpoints, new configuration parameters to adjust throughput, and several bug fixes.
+
+### Custom event indexing + PSQL Indexer
+
+Added a new `EventSink` interface to allow alternatives to Tendermint's proprietary transaction indexer. We also added a PostgreSQL Indexer implementation, allowing rich SQL-based index queries. [More](https://github.com/tendermint/tendermint/blob/master/docs/architecture/adr-065-custom-event-indexing.md)
+
+### Minor Works
+
+- Several Go packages were reorganized to make the distinction between public APIs and implementation details more clear.
+- Block indexer to index begin-block and end-block events. [More](https://github.com/tendermint/tendermint/pull/6226)
+- Block, state, evidence, and light storage keys were reworked to preserve lexicographic order. This change requires a database migration. [More](https://github.com/tendermint/tendermint/pull/5771)
+- Introduciton of Tendermint modes. Part of this change includes the possibility to run a separate seed node that runs the PEX reactor only. [More](https://github.com/tendermint/tendermint/blob/master/docs/architecture/adr-052-tendermint-mode.md)
+
+## V0.36 (expected Q1 2022)
+
+### ABCI++
+
+An overhaul of the existing interface between the application and consensus, to give the application more control over block construction. ABCI++ adds new hooks allowing modification of transactions before they get into a block, verification of a block before voting, injection of signed information into votes, and more compact delivery of blocks after agreement (to allow for concurrent execution). [More](https://github.com/tendermint/spec/blob/master/rfc/004-abci%2B%2B.md)
+
+### Proposer-Based Timestamps
+
+Proposer-based timestamps are a replacement of [BFT time](https://docs.tendermint.com/master/spec/consensus/bft-time.html), whereby the proposer chooses a timestamp and validators vote on the block only if the timestamp is considered *timely*. This increases reliance on an accurate local clock, but in exchange makes block time more reliable and resistant to faults. This has important use cases in light clients, IBC relayers, CosmosHub inflation and enabling signature aggregation. [More](https://github.com/tendermint/tendermint/blob/master/docs/architecture/adr-071-proposer-based-timestamps.md)
+
+### Soft Upgrades
+
+We are working on a suite of tools and patterns to make it easier for both node operators and application developers to quickly and safely upgrade to newer versions of Tendermint. [More](https://github.com/tendermint/spec/pull/222)
+
+### Minor Works
+
+- Remove the "legacy" P2P framework, and clean up of P2P package. [More](https://github.com/tendermint/tendermint/issues/5670)
+- Remove the global mutex from the local ABCI client to enable application-controlled concurrency. [More](https://github.com/tendermint/tendermint/issues/7073)
+- Enable P2P support for light clients
+- Node orchestration of services + Node initialization and composibility
+- Remove redundancy in several data structures. Remove unused components such as the block sync v2 reactor, gRPC in the RPC layer, and the socket-based remote signer.
+- Improve node visibility by introducing more metrics
+
+## V0.37 (expected Q3 2022)
+
+### Complete P2P Refactor
+
+Finish the final phase of the P2P system. Ongoing research and planning is taking place to decide whether to adopt [libp2p](https://libp2p.io/), alternative transports to `MConn` such as [QUIC](https://en.wikipedia.org/wiki/QUIC) and handshake/authentication protocols such as [Noise](https://noiseprotocol.org/). Research into more advanced gossiping techniques.
+
+### Streamline Storage Engine
+
+Tendermint currently has an abstraction to allow support for multiple database backends. This generality incurs maintenance overhead and interferes with application-specific optimizations that Tendermint could use (ACID guarantees, etc.). We plan to converge on a single database and streamline the Tendermint storage engine. [More](https://github.com/tendermint/tendermint/pull/6897)
+
+### Evaluate Interprocess Communication
+
+Tendermint nodes currently have multiple areas of communication with other processes (ABCI, remote-signer, P2P, JSONRPC, websockets, events as examples). Many of these have multiple implementations in which a single suffices. Consolidate and clean up IPC. [More](https://github.com/tendermint/tendermint/blob/master/docs/rfc/rfc-002-ipc-ecosystem.md)
+
+### Minor Works
+
+- Amnesia attack handling. [More](https://github.com/tendermint/tendermint/issues/5270)
+- Remove / Update Consensus WAL. [More](https://github.com/tendermint/tendermint/issues/6397)
+- Signature Aggregation. [More](https://github.com/tendermint/tendermint/issues/1319)
+- Remove gogoproto dependency. [More](https://github.com/tendermint/tendermint/issues/5446)
+
+## V1.0 (expected Q4 2022)
+
+Has the same feature set as V0.37 but with a focus towards testing, protocol correctness and minor tweaks to ensure a stable product. Such work might include extending the [consensus testing framework](https://github.com/tendermint/tendermint/issues/5920), the use of canary/long-lived testnets and greater integration tests.
+
+## Post 1.0 Work
+
+- Improved block propagation with erasure coding and/or compact blocks. [More](https://github.com/tendermint/spec/issues/347)
+- Consensus engine refactor
+- Bidirectional ABCI
+- Randomized Leader Election
+- ZK proofs / other cryptographic primitives
+- Multichain Tendermint
--- a/docs/tendermint-core/README.md
+++ b/docs/tendermint-core/README.md
@@ -1,7 +1,7 @@
 ---
 order: 1
 parent:
-  title: System
+  title: Understanding Tendermint
  order: 5
 ---

@@ -10,7 +10,6 @@ parent:
 This section dives into the internals of Go-Tendermint.

 - [Using Tendermint](./using-tendermint.md)
- [Running in Production](./running-in-production.md)
 - [Subscribing to events](./subscription.md)
 - [Block Structure](./block-structure.md)
 - [RPC](./rpc.md)
@@ -18,3 +17,5 @@ This section dives into the internals of Go-Tendermint.
 - [State Sync](./state-sync.md)
 - [Mempool](./mempool.md)
 - [Light Client](./light-client.md)
+
+For full specifications refer to the [spec repo](https://github.com/tendermint/spec).
--- a/docs/tools/README.md
+++ b/docs/tools/README.md
@@ -27,3 +27,11 @@ testing Tendermint networks.

 This repository contains various different configurations of test networks for,
 and relating to, Tendermint.
+
+Use [Docker Compose](./docker-compose.md) to spin up Tendermint testnets on your
+local machine.
+
+Use [Terraform and Ansible](./terraform-and-ansible.md) to deploy Tendermint
+testnets to the cloud.
+
+See the `tendermint testnet --help` command for more help initializing testnets.
--- a/docs/tools/debugging/pro.md
+++ b/docs/tools/debugging/pro.md
@@ -99,7 +99,7 @@ We’re hoping that these Tendermint tools will become de facto the first respon

 Let us know what your experience has been so far! Have you had a chance to try `tendermint debug` or `tendermint inspect` yet?

-Join our [discord chat](https://discord.gg/vcExX9T), where we discuss the current issues and future improvements.
+Join our [discord chat](https://discord.gg/cosmosnetwork), where we discuss the current issues and future improvements.

 —

--- a/docs/networks/docker-compose.md
+++ b/docs/networks/docker-compose.md
--- a/docs/networks/terraform-and-ansible.md
+++ b/docs/networks/terraform-and-ansible.md
--- a/docs/tutorials/go-built-in.md
+++ b/docs/tutorials/go-built-in.md
@@ -23,6 +23,8 @@ yourself with the syntax.
 By following along with this guide, you'll create a Tendermint Core project
 called kvstore, a (very) simple distributed BFT key-value store.

+> Note: please use a released version of Tendermint with this guide. The guides will work with the latest version. Please, do not use master. 
+
 ## Built-in app vs external app

 Running your application inside the same process as Tendermint Core will give
@@ -50,10 +52,13 @@ We'll start by creating a new Go project.
 ```bash
 mkdir kvstore
 cd kvstore
+go mod init github.com/<github_username>/<repo_name>
 ```

 Inside the example directory create a `main.go` file with the following content:

+> Note: there is no need to clone or fork Tendermint in this tutorial. 
+
 ```go
 package main

@@ -430,7 +435,7 @@ func newTendermint(app abci.Application, configFile string) (*nm.Node, error) {
  config,
  pv,
  nodeKey,
-  proxy.NewLocalClientCreator(app),
+  abcicli.NewLocalClientCreator(app),
  nm.DefaultGenesisDocProviderFunc(config),
  nm.DefaultDBProvider,
  nm.DefaultMetricsProvider(config.Instrumentation),
@@ -482,7 +487,7 @@ node, err := nm.NewNode(
 config,
 pv,
 nodeKey,
- proxy.NewLocalClientCreator(app),
+ abcicli.NewLocalClientCreator(app),
 nm.DefaultGenesisDocProviderFunc(config),
 nm.DefaultDBProvider,
 nm.DefaultMetricsProvider(config.Instrumentation),
@@ -495,7 +500,7 @@ if err != nil {
 `NewNode` requires a few things including a configuration file, a private
 validator, a node key and a few others in order to construct the full node.

-Note we use `proxy.NewLocalClientCreator` here to create a local client instead
+Note we use `abcicli.NewLocalClientCreator` here to create a local client instead
 of one communicating through a socket or gRPC.

 [viper](https://github.com/spf13/viper) is being used for reading the config,
--- a/docs/tutorials/readme.md
+++ b/docs/tutorials/readme.md
@@ -4,4 +4,4 @@ parent:
  order: 2
 ---

-# Guides
+# Tutorials
--- a/docs/versions
+++ b/docs/versions
@@ -1,4 +1,4 @@
+master                  master
 v0.32.x                 v0.32
 v0.33.x                 v0.33
 v0.34.x                 v0.34
-master                  master
--- a/go.mod
+++ b/go.mod
@@ -4,12 +4,11 @@ go 1.16

 require (
 	github.com/BurntSushi/toml v0.4.1
-	github.com/Workiva/go-datastructures v1.0.53
-	github.com/adlio/schema v1.1.13
+	github.com/adlio/schema v1.1.14
 	github.com/btcsuite/btcd v0.22.0-beta
 	github.com/btcsuite/btcutil v1.0.3-0.20201208143702-a53e38424cce
 	github.com/fortytw2/leaktest v1.3.0
-	github.com/go-kit/kit v0.11.0
+	github.com/go-kit/kit v0.12.0
 	github.com/gogo/protobuf v1.3.2
 	github.com/golang/protobuf v1.5.2
 	github.com/golangci/golangci-lint v1.42.1
@@ -20,7 +19,6 @@ require (
 	github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0
 	github.com/lib/pq v1.10.3
 	github.com/libp2p/go-buffer-pool v0.0.2
-	github.com/minio/highwayhash v1.0.2
 	github.com/mroth/weightedrand v0.4.1
 	github.com/oasisprotocol/curve25519-voi v0.0.0-20210609091139-0a56a4bca00b
 	github.com/ory/dockertest v3.3.5+incompatible
@@ -31,14 +29,14 @@ require (
 	github.com/sasha-s/go-deadlock v0.2.1-0.20190427202633-1595213edefa
 	github.com/snikch/goodman v0.0.0-20171125024755-10e37e294daa
 	github.com/spf13/cobra v1.2.1
-	github.com/spf13/viper v1.8.1
+	github.com/spf13/viper v1.9.0
 	github.com/stretchr/testify v1.7.0
 	github.com/tendermint/tm-db v0.6.4
-	github.com/vektra/mockery/v2 v2.9.3
-	golang.org/x/crypto v0.0.0-20210513164829-c07d793c2f9a
-	golang.org/x/net v0.0.0-20210428140749-89ef3d95e781
+	github.com/vektra/mockery/v2 v2.9.4
+	golang.org/x/crypto v0.0.0-20210915214749-c084706c2272
+	golang.org/x/net v0.0.0-20211005001312-d4b1ae081e3b
 	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
-	google.golang.org/grpc v1.40.0
+	google.golang.org/grpc v1.41.0
 	gopkg.in/check.v1 v1.0.0-20200902074654-038fdea0a05b // indirect
 	pgregory.net/rapid v0.4.7
 )
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,6 @@
 4d63.com/gochecknoglobals v0.0.0-20201008074935-acfc0b28355a h1:wFEQiK85fRsEVF0CRrPAos5LoAryUsIX1kPW/WrIqFw=
 4d63.com/gochecknoglobals v0.0.0-20201008074935-acfc0b28355a/go.mod h1:wfdC5ZjKSPr7CybKEcgJhUOgeAQW1+7WcyK8OvUilfo=
+bazil.org/fuse v0.0.0-20200407214033-5883e5a4b512/go.mod h1:FbcW6z/2VytnFDhZfumh8Ss8zxHE6qpMP5sHTRe0EaM=
 bitbucket.org/creachadair/shell v0.0.6/go.mod h1:8Qqi/cYk7vPnsOePHroKXDJYmb5x7ENhtiFtfZq8K+M=
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
@@ -22,6 +23,11 @@ cloud.google.com/go v0.74.0/go.mod h1:VV1xSbzvo+9QJOxLDaJfTjx5e+MePCpCWwvftOeQmW
 cloud.google.com/go v0.78.0/go.mod h1:QjdrLG0uq+YwhjoVOLsS1t7TW8fs36kLs4XO5R5ECHg=
 cloud.google.com/go v0.79.0/go.mod h1:3bzgcEeQlzbuEAYu4mrWhKqWjmpprinYgKJLgKHnbb8=
 cloud.google.com/go v0.81.0/go.mod h1:mk/AM35KwGk/Nm2YSeZbxXdrNK3KZOYHmLkOqC2V6E0=
+cloud.google.com/go v0.83.0/go.mod h1:Z7MJUsANfY0pYPdw0lbnivPx4/vhy/e2FEkSkF7vAVY=
+cloud.google.com/go v0.84.0/go.mod h1:RazrYuxIK6Kb7YrzzhPoLmCVzl7Sup4NrbKPg8KHSUM=
+cloud.google.com/go v0.87.0/go.mod h1:TpDYlFy7vuLzZMMZ+B6iRiELaY7z/gJPaqbMx6mlWcY=
+cloud.google.com/go v0.90.0/go.mod h1:kRX0mNRHe0e2rC6oNakvwQqzyDmg57xJ+SZU1eT2aDQ=
+cloud.google.com/go v0.93.3/go.mod h1:8utlLll2EF5XMAV15woO4lSbWQlk8rer9aLOfLh7+YI=
 cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
 cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
 cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
@@ -31,6 +37,7 @@ cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM7
 cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
 cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk=
 cloud.google.com/go/firestore v1.1.0/go.mod h1:ulACoGHTpvq5r8rxGJ4ddJZBZqakUQqClKRT5SZwBmk=
+cloud.google.com/go/firestore v1.6.0/go.mod h1:afJwI0vaXwAG54kI7A//lP/lSPDkQORQuMkv56TxEPU=
 cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
 cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw=
 cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIAii9o8iA=
@@ -46,16 +53,19 @@ contrib.go.opencensus.io/exporter/stackdriver v0.13.4/go.mod h1:aXENhDJ1Y4lIg4EU
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
 github.com/Antonboom/errname v0.1.4 h1:lGSlI42Gm4bI1e+IITtXJXvxFM8N7naWimVFKcb0McY=
 github.com/Antonboom/errname v0.1.4/go.mod h1:jRXo3m0E0EuCnK3wbsSVH3X55Z4iTDLl6ZfCxwFj4TM=
-github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 h1:w+iIsaOQNcT7OZ575w+acHgRric5iCyQh+xv+KJ4HB8=
-github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78/go.mod h1:LmzpDX56iTiv29bbRTIsUNlaFfuhWRQBWjQdVyAevI8=
+github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 h1:UQHMgLO+TxOElx5B5HZ4hJQsoJ/PvUvKRhJHDQXO8P8=
+github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1/go.mod h1:xomTg63KZ2rFqZQzSB4Vz2SUXa1BpHTVz9L5PTmPC4E=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/toml v0.4.1 h1:GaI7EiDXDRfa8VshkTj7Fym7ha+y8/XxIgD2okUIjLw=
 github.com/BurntSushi/toml v0.4.1/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
+github.com/DataDog/datadog-go v3.2.0+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ=
 github.com/DataDog/zstd v1.4.1 h1:3oxKN3wbHibqx897utPC2LTQU4J+IHWWJO+glkAkpFM=
 github.com/DataDog/zstd v1.4.1/go.mod h1:1jcaCB/ufaK+sKp1NBhlGmpz41jOoPQ35bpF36t7BBo=
 github.com/Djarvur/go-err113 v0.0.0-20210108212216-aea10b59be24 h1:sHglBQTwgx+rWPdisA5ynNEsoARbiCBOyGcJM4/OzsM=
 github.com/Djarvur/go-err113 v0.0.0-20210108212216-aea10b59be24/go.mod h1:4UJr5HIiMZrwgkSPdsjy2uOQExX/WEILpIrO9UPGuXs=
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@@ -251,12 +275,14 @@ github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72/go.mod h1:tQ2
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@@ -297,12 +323,15 @@ github.com/gogo/protobuf v1.3.0/go.mod h1:SlYgWuQ5SjCEi6WLHjHCa1yvBfUnHcTbrrZtXP
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@@ -311,6 +340,7 @@ github.com/golang/mock v1.4.1/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt
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@@ -331,8 +361,9 @@ github.com/golang/protobuf v1.5.1/go.mod h1:DopwsBzvsk0Fs44TXzsVbJyPhcCPeIwnvohx
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@@ -368,12 +399,14 @@ github.com/google/go-cmp v0.5.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
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@@ -388,6 +421,9 @@ github.com/google/pprof v0.0.0-20201023163331-3e6fc7fc9c4c/go.mod h1:kpwsk12EmLe
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@@ -399,8 +435,8 @@ github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
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@@ -441,19 +477,24 @@ github.com/grpc-ecosystem/grpc-gateway v1.9.5/go.mod h1:vNeuVxBJEsws4ogUvrchl83t
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@@ -476,7 +517,7 @@ github.com/hashicorp/serf v0.9.5/go.mod h1:UWDWwZeL5cuWDJdl0C6wrvrUwEqtQ4ZKBKKEN
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@@ -895,9 +954,11 @@ github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyC
 github.com/valyala/fasthttp v1.16.0/go.mod h1:YOKImeEosDdBPnxc0gy7INqi3m1zK6A+xl6TwOBhHCA=
 github.com/valyala/quicktemplate v1.6.3/go.mod h1:fwPzK2fHuYEODzJ9pkw0ipCPNHZ2tD5KW4lOuSdPKzY=
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 github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
@@ -935,14 +996,18 @@ go.uber.org/atomic v1.3.2/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
 go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
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+go.uber.org/atomic v1.9.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
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 go.uber.org/multierr v1.3.0/go.mod h1:VgVr7evmIr6uPjLBxg28wmKNXyqE9akIJ5XnfpiKl+4=
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@@ -960,9 +1025,15 @@ golang.org/x/crypto v0.0.0-20200510223506-06a226fb4e37/go.mod h1:LzIPMQfyMNhhGPh
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
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 golang.org/x/crypto v0.0.0-20210314154223-e6e6c4f2bb5b/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
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@@ -973,6 +1044,7 @@ golang.org/x/exp v0.0.0-20200119233911-0405dc783f0a/go.mod h1:2RIsYlXP63K8oxa1u0
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@@ -1044,12 +1116,18 @@ golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwY
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@@ -1062,6 +1140,10 @@ golang.org/x/oauth2 v0.0.0-20210218202405-ba52d332ba99/go.mod h1:KelEdhl1UZF7XfJ
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@@ -1092,6 +1174,7 @@ golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7w
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@@ -1105,8 +1188,10 @@ golang.org/x/sys v0.0.0-20191001151750-bb3f8db39f24/go.mod h1:h1NjWce9XRLGQEsW7w
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@@ -1131,6 +1216,7 @@ golang.org/x/sys v0.0.0-20200625212154-ddb9806d33ae/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20200803210538-64077c9b5642/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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@@ -1139,16 +1225,26 @@ golang.org/x/sys v0.0.0-20210112080510-489259a85091/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20210119212857-b64e53b001e4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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@@ -1159,19 +1255,22 @@ golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
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-golang.org/x/text v0.3.6 h1:aRYxNxv6iGQlyVaZmk6ZgYEDa+Jg18DxebPSrd6bg1M=
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@@ -1246,7 +1345,6 @@ golang.org/x/tools v0.0.0-20200831203904-5a2aa26beb65/go.mod h1:Cj7w3i3Rnn0Xh82u
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@@ -1261,6 +1359,7 @@ golang.org/x/tools v0.0.0-20210104081019-d8d6ddbec6ee/go.mod h1:emZCQorbCU4vsT4f
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@@ -1271,6 +1370,10 @@ golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8T
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@@ -1294,6 +1397,12 @@ google.golang.org/api v0.40.0/go.mod h1:fYKFpnQN0DsDSKRVRcQSDQNtqWPfM9i+zNPxepjR
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@@ -1348,8 +1457,20 @@ google.golang.org/genproto v0.0.0-20210303154014-9728d6b83eeb/go.mod h1:FWY/as6D
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@@ -1374,9 +1495,15 @@ google.golang.org/grpc v1.34.0/go.mod h1:WotjhfgOW/POjDeRt8vscBtXq+2VjORFy659qA5
 google.golang.org/grpc v1.35.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
 google.golang.org/grpc v1.36.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
 google.golang.org/grpc v1.36.1/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
+google.golang.org/grpc v1.37.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
+google.golang.org/grpc v1.37.1/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
 google.golang.org/grpc v1.38.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
-google.golang.org/grpc v1.40.0 h1:AGJ0Ih4mHjSeibYkFGh1dD9KJ/eOtZ93I6hoHhukQ5Q=
+google.golang.org/grpc v1.39.0/go.mod h1:PImNr+rS9TWYb2O4/emRugxiyHZ5JyHW5F+RPnDzfrE=
+google.golang.org/grpc v1.39.1/go.mod h1:PImNr+rS9TWYb2O4/emRugxiyHZ5JyHW5F+RPnDzfrE=
 google.golang.org/grpc v1.40.0/go.mod h1:ogyxbiOoUXAkP+4+xa6PZSE9DZgIHtSpzjDTB9KAK34=
+google.golang.org/grpc v1.41.0 h1:f+PlOh7QV4iIJkPrx5NQ7qaNGFQ3OTse67yaDHfju4E=
+google.golang.org/grpc v1.41.0/go.mod h1:U3l9uK9J0sini8mHphKoXyaqDA/8VyGnDee1zzIUK6k=
+google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.1.0/go.mod h1:6Kw0yEErY5E/yWrBtf03jp27GLLJujG4z/JK95pnjjw=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
@@ -1406,8 +1533,9 @@ gopkg.in/gcfg.v1 v1.2.3/go.mod h1:yesOnuUOFQAhST5vPY4nbZsb/huCgGGXlipJsBn0b3o=
 gopkg.in/go-playground/assert.v1 v1.2.1/go.mod h1:9RXL0bg/zibRAgZUYszZSwO/z8Y/a8bDuhia5mkpMnE=
 gopkg.in/go-playground/validator.v9 v9.29.1/go.mod h1:+c9/zcJMFNgbLvly1L1V+PpxWdVbfP1avr/N00E2vyQ=
 gopkg.in/ini.v1 v1.51.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
-gopkg.in/ini.v1 v1.62.0 h1:duBzk771uxoUuOlyRLkHsygud9+5lrlGjdFBb4mSKDU=
 gopkg.in/ini.v1 v1.62.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
+gopkg.in/ini.v1 v1.63.2 h1:tGK/CyBg7SMzb60vP1M03vNZ3VDu3wGQJwn7Sxi9r3c=
+gopkg.in/ini.v1 v1.63.2/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
@@ -1448,6 +1576,7 @@ mvdan.cc/unparam v0.0.0-20210104141923-aac4ce9116a7/go.mod h1:hBpJkZE8H/sb+VRFvw
 pgregory.net/rapid v0.4.7 h1:MTNRktPuv5FNqOO151TM9mDTa+XHcX6ypYeISDVD14g=
 pgregory.net/rapid v0.4.7/go.mod h1:UYpPVyjFHzYBGHIxLFoupi8vwk6rXNzRY9OMvVxFIOU=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
+rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=
 rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
 rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
 sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o=
--- a/internal/blocksync/doc.go
+++ b/internal/blocksync/doc.go
@@ -13,14 +13,9 @@ will no longer blocksync and thus no longer run the blocksync process.
 Note, the blocksync reactor Service gossips entire block and relevant data such
 that each receiving peer may construct the entire view of the blocksync state.

-There are currently two versions of the blocksync reactor Service:
-
- v0: The initial implementation that is battle-tested, but whose test coverage
-	is lacking and is not formally verifiable.
- v2: The latest implementation that has much higher test coverage and is formally
-	verified. However, the current implementation of v2 is not as battle-tested and
-	is known to have various bugs that could make it unreliable in production
-	environments.
+There is currently only one version of the blocksync reactor Service
+that is battle-tested, but whose test coverage is lacking and is not
+formally verified.

 The v0 blocksync reactor Service has one p2p channel, BlockchainChannel. This
 channel is responsible for handling messages that both request blocks and respond
--- a/internal/blocksync/v0/pool.go
+++ b/internal/blocksync/v0/pool.go
@@ -1,4 +1,4 @@
-package v0
+package blocksync

 import (
 	"errors"
--- a/internal/blocksync/v0/pool_test.go
+++ b/internal/blocksync/v0/pool_test.go
@@ -1,4 +1,4 @@
-package v0
+package blocksync

 import (
 	"fmt"
--- a/internal/blocksync/v0/reactor.go
+++ b/internal/blocksync/v0/reactor.go
@@ -1,4 +1,4 @@
-package v0
+package blocksync

 import (
 	"fmt"
@@ -6,42 +6,18 @@ import (
 	"sync"
 	"time"

-	bc "github.com/tendermint/tendermint/internal/blocksync"
-	cons "github.com/tendermint/tendermint/internal/consensus"
+	"github.com/tendermint/tendermint/internal/consensus"
 	"github.com/tendermint/tendermint/internal/p2p"
+	sm "github.com/tendermint/tendermint/internal/state"
+	"github.com/tendermint/tendermint/internal/store"
 	"github.com/tendermint/tendermint/libs/log"
 	"github.com/tendermint/tendermint/libs/service"
-	tmSync "github.com/tendermint/tendermint/libs/sync"
+	tmsync "github.com/tendermint/tendermint/libs/sync"
 	bcproto "github.com/tendermint/tendermint/proto/tendermint/blocksync"
-	sm "github.com/tendermint/tendermint/state"
-	"github.com/tendermint/tendermint/store"
 	"github.com/tendermint/tendermint/types"
 )

-var (
-	_ service.Service = (*Reactor)(nil)
-
-	// ChannelShims contains a map of ChannelDescriptorShim objects, where each
-	// object wraps a reference to a legacy p2p ChannelDescriptor and the corresponding
-	// p2p proto.Message the new p2p Channel is responsible for handling.
-	//
-	//
-	// TODO: Remove once p2p refactor is complete.
-	// ref: https://github.com/tendermint/tendermint/issues/5670
-	ChannelShims = map[p2p.ChannelID]*p2p.ChannelDescriptorShim{
-		BlockSyncChannel: {
-			MsgType: new(bcproto.Message),
-			Descriptor: &p2p.ChannelDescriptor{
-				ID:                  byte(BlockSyncChannel),
-				Priority:            5,
-				SendQueueCapacity:   1000,
-				RecvBufferCapacity:  1024,
-				RecvMessageCapacity: bc.MaxMsgSize,
-				MaxSendBytes:        100,
-			},
-		},
-	}
-)
+var _ service.Service = (*Reactor)(nil)

 const (
 	// BlockSyncChannel is a channel for blocks and status updates
@@ -59,6 +35,17 @@ const (
 	syncTimeout = 60 * time.Second
 )

+func GetChannelDescriptor() *p2p.ChannelDescriptor {
+	return &p2p.ChannelDescriptor{
+		ID:                  BlockSyncChannel,
+		MessageType:         new(bcproto.Message),
+		Priority:            5,
+		SendQueueCapacity:   1000,
+		RecvBufferCapacity:  1024,
+		RecvMessageCapacity: MaxMsgSize,
+	}
+}
+
 type consensusReactor interface {
 	// For when we switch from block sync reactor to the consensus
 	// machine.
@@ -85,7 +72,7 @@ type Reactor struct {
 	store       *store.BlockStore
 	pool        *BlockPool
 	consReactor consensusReactor
-	blockSync   *tmSync.AtomicBool
+	blockSync   *tmsync.AtomicBool

 	blockSyncCh *p2p.Channel
 	// blockSyncOutBridgeCh defines a channel that acts as a bridge between sending Envelope
@@ -107,7 +94,7 @@ type Reactor struct {
 	// stopping the p2p Channel(s).
 	poolWG sync.WaitGroup

-	metrics *cons.Metrics
+	metrics *consensus.Metrics

 	syncStartTime time.Time
 }
@@ -122,7 +109,7 @@ func NewReactor(
 	blockSyncCh *p2p.Channel,
 	peerUpdates *p2p.PeerUpdates,
 	blockSync bool,
-	metrics *cons.Metrics,
+	metrics *consensus.Metrics,
 ) (*Reactor, error) {
 	if state.LastBlockHeight != store.Height() {
 		return nil, fmt.Errorf("state (%v) and store (%v) height mismatch", state.LastBlockHeight, store.Height())
@@ -142,7 +129,7 @@ func NewReactor(
 		store:                store,
 		pool:                 NewBlockPool(startHeight, requestsCh, errorsCh),
 		consReactor:          consReactor,
-		blockSync:            tmSync.NewBool(blockSync),
+		blockSync:            tmsync.NewBool(blockSync),
 		requestsCh:           requestsCh,
 		errorsCh:             errorsCh,
 		blockSyncCh:          blockSyncCh,
@@ -169,6 +156,8 @@ func (r *Reactor) OnStart() error {
 		if err := r.pool.Start(); err != nil {
 			return err
 		}
+		r.poolWG.Add(1)
+		go r.requestRoutine()

 		r.poolWG.Add(1)
 		go r.poolRoutine(false)
@@ -384,6 +373,9 @@ func (r *Reactor) SwitchToBlockSync(state sm.State) error {

 	r.syncStartTime = time.Now()

+	r.poolWG.Add(1)
+	go r.requestRoutine()
+
 	r.poolWG.Add(1)
 	go r.poolRoutine(true)

@@ -394,7 +386,6 @@ func (r *Reactor) requestRoutine() {
 	statusUpdateTicker := time.NewTicker(statusUpdateIntervalSeconds * time.Second)
 	defer statusUpdateTicker.Stop()

-	r.poolWG.Add(1)
 	defer r.poolWG.Done()

 	for {
@@ -455,8 +446,6 @@ func (r *Reactor) poolRoutine(stateSynced bool) {
 	defer trySyncTicker.Stop()
 	defer switchToConsensusTicker.Stop()

-	go r.requestRoutine()
-
 	defer r.poolWG.Done()

 FOR_LOOP:
@@ -605,6 +594,8 @@ FOR_LOOP:

 		case <-r.closeCh:
 			break FOR_LOOP
+		case <-r.pool.Quit():
+			break FOR_LOOP
 		}
 	}
 }
--- a/internal/blocksync/v0/reactor_test.go
+++ b/internal/blocksync/v0/reactor_test.go
@@ -1,4 +1,4 @@
-package v0
+package blocksync

 import (
 	"os"
@@ -6,22 +6,23 @@ import (
 	"time"

 	"github.com/stretchr/testify/require"
+	dbm "github.com/tendermint/tm-db"

+	abciclient "github.com/tendermint/tendermint/abci/client"
 	abci "github.com/tendermint/tendermint/abci/types"
-	cfg "github.com/tendermint/tendermint/config"
-	cons "github.com/tendermint/tendermint/internal/consensus"
+	"github.com/tendermint/tendermint/config"
+	"github.com/tendermint/tendermint/internal/consensus"
 	"github.com/tendermint/tendermint/internal/mempool/mock"
 	"github.com/tendermint/tendermint/internal/p2p"
 	"github.com/tendermint/tendermint/internal/p2p/p2ptest"
+	"github.com/tendermint/tendermint/internal/proxy"
+	sm "github.com/tendermint/tendermint/internal/state"
+	sf "github.com/tendermint/tendermint/internal/state/test/factory"
+	"github.com/tendermint/tendermint/internal/store"
 	"github.com/tendermint/tendermint/internal/test/factory"
 	"github.com/tendermint/tendermint/libs/log"
 	bcproto "github.com/tendermint/tendermint/proto/tendermint/blocksync"
-	"github.com/tendermint/tendermint/proxy"
-	sm "github.com/tendermint/tendermint/state"
-	sf "github.com/tendermint/tendermint/state/test/factory"
-	"github.com/tendermint/tendermint/store"
 	"github.com/tendermint/tendermint/types"
-	dbm "github.com/tendermint/tm-db"
 )

 type reactorTestSuite struct {
@@ -64,8 +65,8 @@ func setup(
 		blockSync:         true,
 	}

-	chDesc := p2p.ChannelDescriptor{ID: byte(BlockSyncChannel)}
-	rts.blockSyncChannels = rts.network.MakeChannelsNoCleanup(t, chDesc, new(bcproto.Message), int(chBuf))
+	chDesc := &p2p.ChannelDescriptor{ID: BlockSyncChannel, MessageType: new(bcproto.Message)}
+	rts.blockSyncChannels = rts.network.MakeChannelsNoCleanup(t, chDesc)

 	i := 0
 	for nodeID := range rts.network.Nodes {
@@ -97,7 +98,7 @@ func (rts *reactorTestSuite) addNode(t *testing.T,
 	t.Helper()

 	rts.nodes = append(rts.nodes, nodeID)
-	rts.app[nodeID] = proxy.NewAppConns(proxy.NewLocalClientCreator(&abci.BaseApplication{}))
+	rts.app[nodeID] = proxy.NewAppConns(abciclient.NewLocalCreator(&abci.BaseApplication{}), proxy.NopMetrics())
 	require.NoError(t, rts.app[nodeID].Start())

 	blockDB := dbm.NewMemDB()
@@ -164,7 +165,7 @@ func (rts *reactorTestSuite) addNode(t *testing.T,
 		rts.blockSyncChannels[nodeID],
 		rts.peerUpdates[nodeID],
 		rts.blockSync,
-		cons.NopMetrics())
+		consensus.NopMetrics())
 	require.NoError(t, err)

 	require.NoError(t, rts.reactors[nodeID].Start())
@@ -181,10 +182,10 @@ func (rts *reactorTestSuite) start(t *testing.T) {
 }

 func TestReactor_AbruptDisconnect(t *testing.T) {
-	config := cfg.ResetTestRoot("block_sync_reactor_test")
-	defer os.RemoveAll(config.RootDir)
+	cfg := config.ResetTestRoot("block_sync_reactor_test")
+	defer os.RemoveAll(cfg.RootDir)

-	genDoc, privVals := factory.RandGenesisDoc(config, 1, false, 30)
+	genDoc, privVals := factory.RandGenesisDoc(cfg, 1, false, 30)
 	maxBlockHeight := int64(64)

 	rts := setup(t, genDoc, privVals[0], []int64{maxBlockHeight, 0}, 0)
@@ -216,10 +217,10 @@ func TestReactor_AbruptDisconnect(t *testing.T) {
 }

 func TestReactor_SyncTime(t *testing.T) {
-	config := cfg.ResetTestRoot("block_sync_reactor_test")
-	defer os.RemoveAll(config.RootDir)
+	cfg := config.ResetTestRoot("block_sync_reactor_test")
+	defer os.RemoveAll(cfg.RootDir)

-	genDoc, privVals := factory.RandGenesisDoc(config, 1, false, 30)
+	genDoc, privVals := factory.RandGenesisDoc(cfg, 1, false, 30)
 	maxBlockHeight := int64(101)

 	rts := setup(t, genDoc, privVals[0], []int64{maxBlockHeight, 0}, 0)
@@ -239,10 +240,10 @@ func TestReactor_SyncTime(t *testing.T) {
 }

 func TestReactor_NoBlockResponse(t *testing.T) {
-	config := cfg.ResetTestRoot("block_sync_reactor_test")
-	defer os.RemoveAll(config.RootDir)
+	cfg := config.ResetTestRoot("block_sync_reactor_test")
+	defer os.RemoveAll(cfg.RootDir)

-	genDoc, privVals := factory.RandGenesisDoc(config, 1, false, 30)
+	genDoc, privVals := factory.RandGenesisDoc(cfg, 1, false, 30)
 	maxBlockHeight := int64(65)

 	rts := setup(t, genDoc, privVals[0], []int64{maxBlockHeight, 0}, 0)
@@ -286,11 +287,11 @@ func TestReactor_BadBlockStopsPeer(t *testing.T) {
 	// See: https://github.com/tendermint/tendermint/issues/6005
 	t.SkipNow()

-	config := cfg.ResetTestRoot("block_sync_reactor_test")
-	defer os.RemoveAll(config.RootDir)
+	cfg := config.ResetTestRoot("block_sync_reactor_test")
+	defer os.RemoveAll(cfg.RootDir)

 	maxBlockHeight := int64(48)
-	genDoc, privVals := factory.RandGenesisDoc(config, 1, false, 30)
+	genDoc, privVals := factory.RandGenesisDoc(cfg, 1, false, 30)

 	rts := setup(t, genDoc, privVals[0], []int64{maxBlockHeight, 0, 0, 0, 0}, 1000)

@@ -324,7 +325,7 @@ func TestReactor_BadBlockStopsPeer(t *testing.T) {
 	//
 	// XXX: This causes a potential race condition.
 	// See: https://github.com/tendermint/tendermint/issues/6005
-	otherGenDoc, otherPrivVals := factory.RandGenesisDoc(config, 1, false, 30)
+	otherGenDoc, otherPrivVals := factory.RandGenesisDoc(cfg, 1, false, 30)
 	newNode := rts.network.MakeNode(t, p2ptest.NodeOptions{
 		MaxPeers:     uint16(len(rts.nodes) + 1),
 		MaxConnected: uint16(len(rts.nodes) + 1),
--- a/internal/blocksync/v2/internal/behavior/doc.go
+++ b/internal/blocksync/v2/internal/behavior/doc.go
@@ -1,42 +0,0 @@
-/*
-Package Behavior provides a mechanism for reactors to report behavior of peers.
-
-Instead of a reactor calling the switch directly it will call the behavior module which will
-handle the stoping and marking peer as good on behalf of the reactor.
-
-There are four different behaviors a reactor can report.
-
-1. bad message
-
-type badMessage struct {
-	explanation string
-}
-
-This message will request the peer be stopped for an error
-
-2. message out of order
-
-type messageOutOfOrder struct {
-	explanation string
-}
-
-This message will request the peer be stopped for an error
-
-3. consesnsus Vote
-
-type consensusVote struct {
-	explanation string
-}
-
-This message will request the peer be marked as good
-
-4. block part
-
-type blockPart struct {
-	explanation string
-}
-
-This message will request the peer be marked as good
-
-*/
-package behavior
--- a/internal/blocksync/v2/internal/behavior/peer_behaviour.go
+++ b/internal/blocksync/v2/internal/behavior/peer_behaviour.go
@@ -1,47 +0,0 @@
-package behavior
-
-import "github.com/tendermint/tendermint/types"
-
-// PeerBehavior is a struct describing a behavior a peer performed.
-// `peerID` identifies the peer and reason characterizes the specific
-// behavior performed by the peer.
-type PeerBehavior struct {
-	peerID types.NodeID
-	reason interface{}
-}
-
-type badMessage struct {
-	explanation string
-}
-
-// BadMessage returns a badMessage PeerBehavior.
-func BadMessage(peerID types.NodeID, explanation string) PeerBehavior {
-	return PeerBehavior{peerID: peerID, reason: badMessage{explanation}}
-}
-
-type messageOutOfOrder struct {
-	explanation string
-}
-
-// MessageOutOfOrder returns a messagOutOfOrder PeerBehavior.
-func MessageOutOfOrder(peerID types.NodeID, explanation string) PeerBehavior {
-	return PeerBehavior{peerID: peerID, reason: messageOutOfOrder{explanation}}
-}
-
-type consensusVote struct {
-	explanation string
-}
-
-// ConsensusVote returns a consensusVote PeerBehavior.
-func ConsensusVote(peerID types.NodeID, explanation string) PeerBehavior {
-	return PeerBehavior{peerID: peerID, reason: consensusVote{explanation}}
-}
-
-type blockPart struct {
-	explanation string
-}
-
-// BlockPart returns blockPart PeerBehavior.
-func BlockPart(peerID types.NodeID, explanation string) PeerBehavior {
-	return PeerBehavior{peerID: peerID, reason: blockPart{explanation}}
-}
--- a/internal/blocksync/v2/internal/behavior/reporter.go
+++ b/internal/blocksync/v2/internal/behavior/reporter.go
@@ -1,87 +0,0 @@
-package behavior
-
-import (
-	"errors"
-
-	tmsync "github.com/tendermint/tendermint/internal/libs/sync"
-	"github.com/tendermint/tendermint/internal/p2p"
-	"github.com/tendermint/tendermint/types"
-)
-
-// Reporter provides an interface for reactors to report the behavior
-// of peers synchronously to other components.
-type Reporter interface {
-	Report(behavior PeerBehavior) error
-}
-
-// SwitchReporter reports peer behavior to an internal Switch.
-type SwitchReporter struct {
-	sw *p2p.Switch
-}
-
-// NewSwitchReporter return a new SwitchReporter instance which wraps the Switch.
-func NewSwitchReporter(sw *p2p.Switch) *SwitchReporter {
-	return &SwitchReporter{
-		sw: sw,
-	}
-}
-
-// Report reports the behavior of a peer to the Switch.
-func (spbr *SwitchReporter) Report(behavior PeerBehavior) error {
-	peer := spbr.sw.Peers().Get(behavior.peerID)
-	if peer == nil {
-		return errors.New("peer not found")
-	}
-
-	switch reason := behavior.reason.(type) {
-	case consensusVote, blockPart:
-		spbr.sw.MarkPeerAsGood(peer)
-	case badMessage:
-		spbr.sw.StopPeerForError(peer, reason.explanation)
-	case messageOutOfOrder:
-		spbr.sw.StopPeerForError(peer, reason.explanation)
-	default:
-		return errors.New("unknown reason reported")
-	}
-
-	return nil
-}
-
-// MockReporter is a concrete implementation of the Reporter
-// interface used in reactor tests to ensure reactors report the correct
-// behavior in manufactured scenarios.
-type MockReporter struct {
-	mtx tmsync.RWMutex
-	pb  map[types.NodeID][]PeerBehavior
-}
-
-// NewMockReporter returns a Reporter which records all reported
-// behaviors in memory.
-func NewMockReporter() *MockReporter {
-	return &MockReporter{
-		pb: map[types.NodeID][]PeerBehavior{},
-	}
-}
-
-// Report stores the PeerBehavior produced by the peer identified by peerID.
-func (mpbr *MockReporter) Report(behavior PeerBehavior) error {
-	mpbr.mtx.Lock()
-	defer mpbr.mtx.Unlock()
-	mpbr.pb[behavior.peerID] = append(mpbr.pb[behavior.peerID], behavior)
-
-	return nil
-}
-
-// GetBehaviors returns all behaviors reported on the peer identified by peerID.
-func (mpbr *MockReporter) GetBehaviors(peerID types.NodeID) []PeerBehavior {
-	mpbr.mtx.RLock()
-	defer mpbr.mtx.RUnlock()
-	if items, ok := mpbr.pb[peerID]; ok {
-		result := make([]PeerBehavior, len(items))
-		copy(result, items)
-
-		return result
-	}
-
-	return []PeerBehavior{}
-}
--- a/internal/blocksync/v2/internal/behavior/reporter_test.go
+++ b/internal/blocksync/v2/internal/behavior/reporter_test.go
@@ -1,205 +0,0 @@
-package behavior_test
-
-import (
-	"sync"
-	"testing"
-
-	bh "github.com/tendermint/tendermint/internal/blocksync/v2/internal/behavior"
-	"github.com/tendermint/tendermint/types"
-)
-
-// TestMockReporter tests the MockReporter's ability to store reported
-// peer behavior in memory indexed by the peerID.
-func TestMockReporter(t *testing.T) {
-	var peerID types.NodeID = "MockPeer"
-	pr := bh.NewMockReporter()
-
-	behaviors := pr.GetBehaviors(peerID)
-	if len(behaviors) != 0 {
-		t.Error("Expected to have no behaviors reported")
-	}
-
-	badMessage := bh.BadMessage(peerID, "bad message")
-	if err := pr.Report(badMessage); err != nil {
-		t.Error(err)
-	}
-	behaviors = pr.GetBehaviors(peerID)
-	if len(behaviors) != 1 {
-		t.Error("Expected the peer have one reported behavior")
-	}
-
-	if behaviors[0] != badMessage {
-		t.Error("Expected Bad Message to have been reported")
-	}
-}
-
-type scriptItem struct {
-	peerID   types.NodeID
-	behavior bh.PeerBehavior
-}
-
-// equalBehaviors returns true if a and b contain the same PeerBehaviors with
-// the same freequencies and otherwise false.
-func equalBehaviors(a []bh.PeerBehavior, b []bh.PeerBehavior) bool {
-	aHistogram := map[bh.PeerBehavior]int{}
-	bHistogram := map[bh.PeerBehavior]int{}
-
-	for _, behavior := range a {
-		aHistogram[behavior]++
-	}
-
-	for _, behavior := range b {
-		bHistogram[behavior]++
-	}
-
-	if len(aHistogram) != len(bHistogram) {
-		return false
-	}
-
-	for _, behavior := range a {
-		if aHistogram[behavior] != bHistogram[behavior] {
-			return false
-		}
-	}
-
-	for _, behavior := range b {
-		if bHistogram[behavior] != aHistogram[behavior] {
-			return false
-		}
-	}
-
-	return true
-}
-
-// TestEqualPeerBehaviors tests that equalBehaviors can tell that two slices
-// of peer behaviors can be compared for the behaviors they contain and the
-// freequencies that those behaviors occur.
-func TestEqualPeerBehaviors(t *testing.T) {
-	var (
-		peerID        types.NodeID = "MockPeer"
-		consensusVote              = bh.ConsensusVote(peerID, "voted")
-		blockPart                  = bh.BlockPart(peerID, "blocked")
-		equals                     = []struct {
-			left  []bh.PeerBehavior
-			right []bh.PeerBehavior
-		}{
-			// Empty sets
-			{[]bh.PeerBehavior{}, []bh.PeerBehavior{}},
-			// Single behaviors
-			{[]bh.PeerBehavior{consensusVote}, []bh.PeerBehavior{consensusVote}},
-			// Equal Frequencies
-			{[]bh.PeerBehavior{consensusVote, consensusVote},
-				[]bh.PeerBehavior{consensusVote, consensusVote}},
-			// Equal frequencies different orders
-			{[]bh.PeerBehavior{consensusVote, blockPart},
-				[]bh.PeerBehavior{blockPart, consensusVote}},
-		}
-		unequals = []struct {
-			left  []bh.PeerBehavior
-			right []bh.PeerBehavior
-		}{
-			// Comparing empty sets to non empty sets
-			{[]bh.PeerBehavior{}, []bh.PeerBehavior{consensusVote}},
-			// Different behaviors
-			{[]bh.PeerBehavior{consensusVote}, []bh.PeerBehavior{blockPart}},
-			// Same behavior with different frequencies
-			{[]bh.PeerBehavior{consensusVote},
-				[]bh.PeerBehavior{consensusVote, consensusVote}},
-		}
-	)
-
-	for _, test := range equals {
-		if !equalBehaviors(test.left, test.right) {
-			t.Errorf("expected %#v and %#v to be equal", test.left, test.right)
-		}
-	}
-
-	for _, test := range unequals {
-		if equalBehaviors(test.left, test.right) {
-			t.Errorf("expected %#v and %#v to be unequal", test.left, test.right)
-		}
-	}
-}
-
-// TestPeerBehaviorConcurrency constructs a scenario in which
-// multiple goroutines are using the same MockReporter instance.
-// This test reproduces the conditions in which MockReporter will
-// be used within a Reactor `Receive` method tests to ensure thread safety.
-func TestMockPeerBehaviorReporterConcurrency(t *testing.T) {
-	var (
-		behaviorScript = []struct {
-			peerID    types.NodeID
-			behaviors []bh.PeerBehavior
-		}{
-			{"1", []bh.PeerBehavior{bh.ConsensusVote("1", "")}},
-			{"2", []bh.PeerBehavior{bh.ConsensusVote("2", ""), bh.ConsensusVote("2", ""), bh.ConsensusVote("2", "")}},
-			{
-				"3",
-				[]bh.PeerBehavior{bh.BlockPart("3", ""),
-					bh.ConsensusVote("3", ""),
-					bh.BlockPart("3", ""),
-					bh.ConsensusVote("3", "")}},
-			{
-				"4",
-				[]bh.PeerBehavior{bh.ConsensusVote("4", ""),
-					bh.ConsensusVote("4", ""),
-					bh.ConsensusVote("4", ""),
-					bh.ConsensusVote("4", "")}},
-			{
-				"5",
-				[]bh.PeerBehavior{bh.BlockPart("5", ""),
-					bh.ConsensusVote("5", ""),
-					bh.BlockPart("5", ""),
-					bh.ConsensusVote("5", "")}},
-		}
-	)
-
-	var receiveWg sync.WaitGroup
-	pr := bh.NewMockReporter()
-	scriptItems := make(chan scriptItem)
-	done := make(chan int)
-	numConsumers := 3
-	for i := 0; i < numConsumers; i++ {
-		receiveWg.Add(1)
-		go func() {
-			defer receiveWg.Done()
-			for {
-				select {
-				case pb := <-scriptItems:
-					if err := pr.Report(pb.behavior); err != nil {
-						t.Error(err)
-					}
-				case <-done:
-					return
-				}
-			}
-		}()
-	}
-
-	var sendingWg sync.WaitGroup
-	sendingWg.Add(1)
-	go func() {
-		defer sendingWg.Done()
-		for _, item := range behaviorScript {
-			for _, reason := range item.behaviors {
-				scriptItems <- scriptItem{item.peerID, reason}
-			}
-		}
-	}()
-
-	sendingWg.Wait()
-
-	for i := 0; i < numConsumers; i++ {
-		done <- 1
-	}
-
-	receiveWg.Wait()
-
-	for _, items := range behaviorScript {
-		reported := pr.GetBehaviors(items.peerID)
-		if !equalBehaviors(reported, items.behaviors) {
-			t.Errorf("expected peer %s to have behaved \nExpected: %#v \nGot %#v \n",
-				items.peerID, items.behaviors, reported)
-		}
-	}
-}
--- a/internal/blocksync/v2/io.go
+++ b/internal/blocksync/v2/io.go
@@ -1,187 +0,0 @@
-package v2
-
-import (
-	"errors"
-
-	"github.com/gogo/protobuf/proto"
-	"github.com/tendermint/tendermint/internal/p2p"
-	bcproto "github.com/tendermint/tendermint/proto/tendermint/blocksync"
-	"github.com/tendermint/tendermint/state"
-	"github.com/tendermint/tendermint/types"
-)
-
-var (
-	errPeerQueueFull = errors.New("peer queue full")
-)
-
-type iIO interface {
-	sendBlockRequest(peer p2p.Peer, height int64) error
-	sendBlockToPeer(block *types.Block, peer p2p.Peer) error
-	sendBlockNotFound(height int64, peer p2p.Peer) error
-	sendStatusResponse(base, height int64, peer p2p.Peer) error
-
-	sendStatusRequest(peer p2p.Peer) error
-	broadcastStatusRequest() error
-
-	trySwitchToConsensus(state state.State, skipWAL bool) bool
-}
-
-type switchIO struct {
-	sw *p2p.Switch
-}
-
-func newSwitchIo(sw *p2p.Switch) *switchIO {
-	return &switchIO{
-		sw: sw,
-	}
-}
-
-const (
-	// BlockchainChannel is a channel for blocks and status updates (`BlockStore` height)
-	BlockchainChannel = byte(0x40)
-)
-
-type consensusReactor interface {
-	// for when we switch from blockchain reactor and block sync to
-	// the consensus machine
-	SwitchToConsensus(state state.State, skipWAL bool)
-}
-
-func (sio *switchIO) sendBlockRequest(peer p2p.Peer, height int64) error {
-	msgProto := &bcproto.Message{
-		Sum: &bcproto.Message_BlockRequest{
-			BlockRequest: &bcproto.BlockRequest{
-				Height: height,
-			},
-		},
-	}
-
-	msgBytes, err := proto.Marshal(msgProto)
-	if err != nil {
-		return err
-	}
-
-	queued := peer.TrySend(BlockchainChannel, msgBytes)
-	if !queued {
-		return errPeerQueueFull
-	}
-	return nil
-}
-
-func (sio *switchIO) sendStatusResponse(base int64, height int64, peer p2p.Peer) error {
-	msgProto := &bcproto.Message{
-		Sum: &bcproto.Message_StatusResponse{
-			StatusResponse: &bcproto.StatusResponse{
-				Height: height,
-				Base:   base,
-			},
-		},
-	}
-
-	msgBytes, err := proto.Marshal(msgProto)
-	if err != nil {
-		return err
-	}
-
-	if queued := peer.TrySend(BlockchainChannel, msgBytes); !queued {
-		return errPeerQueueFull
-	}
-
-	return nil
-}
-
-func (sio *switchIO) sendBlockToPeer(block *types.Block, peer p2p.Peer) error {
-	if block == nil {
-		panic("trying to send nil block")
-	}
-
-	bpb, err := block.ToProto()
-	if err != nil {
-		return err
-	}
-
-	msgProto := &bcproto.Message{
-		Sum: &bcproto.Message_BlockResponse{
-			BlockResponse: &bcproto.BlockResponse{
-				Block: bpb,
-			},
-		},
-	}
-
-	msgBytes, err := proto.Marshal(msgProto)
-	if err != nil {
-		return err
-	}
-
-	if queued := peer.TrySend(BlockchainChannel, msgBytes); !queued {
-		return errPeerQueueFull
-	}
-
-	return nil
-}
-
-func (sio *switchIO) sendBlockNotFound(height int64, peer p2p.Peer) error {
-	msgProto := &bcproto.Message{
-		Sum: &bcproto.Message_NoBlockResponse{
-			NoBlockResponse: &bcproto.NoBlockResponse{
-				Height: height,
-			},
-		},
-	}
-
-	msgBytes, err := proto.Marshal(msgProto)
-	if err != nil {
-		return err
-	}
-
-	if queued := peer.TrySend(BlockchainChannel, msgBytes); !queued {
-		return errPeerQueueFull
-	}
-
-	return nil
-}
-
-func (sio *switchIO) trySwitchToConsensus(state state.State, skipWAL bool) bool {
-	conR, ok := sio.sw.Reactor("CONSENSUS").(consensusReactor)
-	if ok {
-		conR.SwitchToConsensus(state, skipWAL)
-	}
-	return ok
-}
-
-func (sio *switchIO) sendStatusRequest(peer p2p.Peer) error {
-	msgProto := &bcproto.Message{
-		Sum: &bcproto.Message_StatusRequest{
-			StatusRequest: &bcproto.StatusRequest{},
-		},
-	}
-
-	msgBytes, err := proto.Marshal(msgProto)
-	if err != nil {
-		return err
-	}
-
-	if queued := peer.TrySend(BlockchainChannel, msgBytes); !queued {
-		return errPeerQueueFull
-	}
-
-	return nil
-}
-
-func (sio *switchIO) broadcastStatusRequest() error {
-	msgProto := &bcproto.Message{
-		Sum: &bcproto.Message_StatusRequest{
-			StatusRequest: &bcproto.StatusRequest{},
-		},
-	}
-
-	msgBytes, err := proto.Marshal(msgProto)
-	if err != nil {
-		return err
-	}
-
-	// XXX: maybe we should use an io specific peer list here
-	sio.sw.Broadcast(BlockchainChannel, msgBytes)
-
-	return nil
-}
--- a/internal/blocksync/v2/metrics.go
+++ b/internal/blocksync/v2/metrics.go
@@ -1,125 +0,0 @@
-package v2
-
-import (
-	"github.com/go-kit/kit/metrics"
-	"github.com/go-kit/kit/metrics/discard"
-	"github.com/go-kit/kit/metrics/prometheus"
-	stdprometheus "github.com/prometheus/client_golang/prometheus"
-)
-
-const (
-	// MetricsSubsystem is a subsystem shared by all metrics exposed by this
-	// package.
-	MetricsSubsystem = "blockchain"
-)
-
-// Metrics contains metrics exposed by this package.
-type Metrics struct {
-	// events_in
-	EventsIn metrics.Counter
-	// events_in
-	EventsHandled metrics.Counter
-	// events_out
-	EventsOut metrics.Counter
-	// errors_in
-	ErrorsIn metrics.Counter
-	// errors_handled
-	ErrorsHandled metrics.Counter
-	// errors_out
-	ErrorsOut metrics.Counter
-	// events_shed
-	EventsShed metrics.Counter
-	// events_sent
-	EventsSent metrics.Counter
-	// errors_sent
-	ErrorsSent metrics.Counter
-	// errors_shed
-	ErrorsShed metrics.Counter
-}
-
-// PrometheusMetrics returns metrics for in and out events, errors, etc. handled by routines.
-// Can we burn in the routine name here?
-func PrometheusMetrics(namespace string, labelsAndValues ...string) *Metrics {
-	labels := []string{}
-	for i := 0; i < len(labelsAndValues); i += 2 {
-		labels = append(labels, labelsAndValues[i])
-	}
-	return &Metrics{
-		EventsIn: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
-			Namespace: namespace,
-			Subsystem: MetricsSubsystem,
-			Name:      "events_in",
-			Help:      "Events read from the channel.",
-		}, labels).With(labelsAndValues...),
-		EventsHandled: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
-			Namespace: namespace,
-			Subsystem: MetricsSubsystem,
-			Name:      "events_handled",
-			Help:      "Events handled",
-		}, labels).With(labelsAndValues...),
-		EventsOut: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
-			Namespace: namespace,
-			Subsystem: MetricsSubsystem,
-			Name:      "events_out",
-			Help:      "Events output from routine.",
-		}, labels).With(labelsAndValues...),
-		ErrorsIn: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
-			Namespace: namespace,
-			Subsystem: MetricsSubsystem,
-			Name:      "errors_in",
-			Help:      "Errors read from the channel.",
-		}, labels).With(labelsAndValues...),
-		ErrorsHandled: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
-			Namespace: namespace,
-			Subsystem: MetricsSubsystem,
-			Name:      "errors_handled",
-			Help:      "Errors handled.",
-		}, labels).With(labelsAndValues...),
-		ErrorsOut: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
-			Namespace: namespace,
-			Subsystem: MetricsSubsystem,
-			Name:      "errors_out",
-			Help:      "Errors output from routine.",
-		}, labels).With(labelsAndValues...),
-		ErrorsSent: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
-			Namespace: namespace,
-			Subsystem: MetricsSubsystem,
-			Name:      "errors_sent",
-			Help:      "Errors sent to routine.",
-		}, labels).With(labelsAndValues...),
-		ErrorsShed: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
-			Namespace: namespace,
-			Subsystem: MetricsSubsystem,
-			Name:      "errors_shed",
-			Help:      "Errors dropped from sending.",
-		}, labels).With(labelsAndValues...),
-		EventsSent: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
-			Namespace: namespace,
-			Subsystem: MetricsSubsystem,
-			Name:      "events_sent",
-			Help:      "Events sent to routine.",
-		}, labels).With(labelsAndValues...),
-		EventsShed: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
-			Namespace: namespace,
-			Subsystem: MetricsSubsystem,
-			Name:      "events_shed",
-			Help:      "Events dropped from sending.",
-		}, labels).With(labelsAndValues...),
-	}
-}
-
-// NopMetrics returns no-op Metrics.
-func NopMetrics() *Metrics {
-	return &Metrics{
-		EventsIn:      discard.NewCounter(),
-		EventsHandled: discard.NewCounter(),
-		EventsOut:     discard.NewCounter(),
-		ErrorsIn:      discard.NewCounter(),
-		ErrorsHandled: discard.NewCounter(),
-		ErrorsOut:     discard.NewCounter(),
-		EventsShed:    discard.NewCounter(),
-		EventsSent:    discard.NewCounter(),
-		ErrorsSent:    discard.NewCounter(),
-		ErrorsShed:    discard.NewCounter(),
-	}
-}
--- a/internal/blocksync/v2/processor.go
+++ b/internal/blocksync/v2/processor.go
@@ -1,193 +0,0 @@
-package v2
-
-import (
-	"fmt"
-
-	tmState "github.com/tendermint/tendermint/state"
-	"github.com/tendermint/tendermint/types"
-)
-
-// Events generated by the processor:
-// block execution failure, event will indicate the peer(s) that caused the error
-type pcBlockVerificationFailure struct {
-	priorityNormal
-	height       int64
-	firstPeerID  types.NodeID
-	secondPeerID types.NodeID
-}
-
-func (e pcBlockVerificationFailure) String() string {
-	return fmt.Sprintf("pcBlockVerificationFailure{%d 1st peer: %v, 2nd peer: %v}",
-		e.height, e.firstPeerID, e.secondPeerID)
-}
-
-// successful block execution
-type pcBlockProcessed struct {
-	priorityNormal
-	height int64
-	peerID types.NodeID
-}
-
-func (e pcBlockProcessed) String() string {
-	return fmt.Sprintf("pcBlockProcessed{%d peer: %v}", e.height, e.peerID)
-}
-
-// processor has finished
-type pcFinished struct {
-	priorityNormal
-	blocksSynced int
-	tmState      tmState.State
-}
-
-func (p pcFinished) Error() string {
-	return "finished"
-}
-
-type queueItem struct {
-	block  *types.Block
-	peerID types.NodeID
-}
-
-type blockQueue map[int64]queueItem
-
-type pcState struct {
-	// blocks waiting to be processed
-	queue blockQueue
-
-	// draining indicates that the next rProcessBlock event with a queue miss constitutes completion
-	draining bool
-
-	// the number of blocks successfully synced by the processor
-	blocksSynced int
-
-	// the processorContext which contains the processor dependencies
-	context processorContext
-}
-
-func (state *pcState) String() string {
-	return fmt.Sprintf("height: %d queue length: %d draining: %v blocks synced: %d",
-		state.height(), len(state.queue), state.draining, state.blocksSynced)
-}
-
-// newPcState returns a pcState initialized with the last verified block enqueued
-func newPcState(context processorContext) *pcState {
-	return &pcState{
-		queue:        blockQueue{},
-		draining:     false,
-		blocksSynced: 0,
-		context:      context,
-	}
-}
-
-// nextTwo returns the next two unverified blocks
-func (state *pcState) nextTwo() (queueItem, queueItem, error) {
-	if first, ok := state.queue[state.height()+1]; ok {
-		if second, ok := state.queue[state.height()+2]; ok {
-			return first, second, nil
-		}
-	}
-	return queueItem{}, queueItem{}, fmt.Errorf("not found")
-}
-
-// synced returns true when at most the last verified block remains in the queue
-func (state *pcState) synced() bool {
-	return len(state.queue) <= 1
-}
-
-func (state *pcState) enqueue(peerID types.NodeID, block *types.Block, height int64) {
-	if item, ok := state.queue[height]; ok {
-		panic(fmt.Sprintf(
-			"duplicate block %d (%X) enqueued by processor (sent by %v; existing block %X from %v)",
-			height, block.Hash(), peerID, item.block.Hash(), item.peerID))
-	}
-
-	state.queue[height] = queueItem{block: block, peerID: peerID}
-}
-
-func (state *pcState) height() int64 {
-	return state.context.tmState().LastBlockHeight
-}
-
-// purgePeer moves all unprocessed blocks from the queue
-func (state *pcState) purgePeer(peerID types.NodeID) {
-	// what if height is less than state.height?
-	for height, item := range state.queue {
-		if item.peerID == peerID {
-			delete(state.queue, height)
-		}
-	}
-}
-
-// handle processes FSM events
-func (state *pcState) handle(event Event) (Event, error) {
-	switch event := event.(type) {
-	case bcResetState:
-		state.context.setState(event.state)
-		return noOp, nil
-
-	case scFinishedEv:
-		if state.synced() {
-			return pcFinished{tmState: state.context.tmState(), blocksSynced: state.blocksSynced}, nil
-		}
-		state.draining = true
-		return noOp, nil
-
-	case scPeerError:
-		state.purgePeer(event.peerID)
-		return noOp, nil
-
-	case scBlockReceived:
-		if event.block == nil {
-			return noOp, nil
-		}
-
-		// enqueue block if height is higher than state height, else ignore it
-		if event.block.Height > state.height() {
-			state.enqueue(event.peerID, event.block, event.block.Height)
-		}
-		return noOp, nil
-
-	case rProcessBlock:
-		tmState := state.context.tmState()
-		firstItem, secondItem, err := state.nextTwo()
-		if err != nil {
-			if state.draining {
-				return pcFinished{tmState: tmState, blocksSynced: state.blocksSynced}, nil
-			}
-			return noOp, nil
-		}
-
-		var (
-			first, second = firstItem.block, secondItem.block
-			firstParts    = first.MakePartSet(types.BlockPartSizeBytes)
-			firstID       = types.BlockID{Hash: first.Hash(), PartSetHeader: firstParts.Header()}
-		)
-
-		// verify if +second+ last commit "confirms" +first+ block
-		err = state.context.verifyCommit(tmState.ChainID, firstID, first.Height, second.LastCommit)
-		if err != nil {
-			state.purgePeer(firstItem.peerID)
-			if firstItem.peerID != secondItem.peerID {
-				state.purgePeer(secondItem.peerID)
-			}
-			return pcBlockVerificationFailure{
-					height: first.Height, firstPeerID: firstItem.peerID, secondPeerID: secondItem.peerID},
-				nil
-		}
-
-		state.context.saveBlock(first, firstParts, second.LastCommit)
-
-		if err := state.context.applyBlock(firstID, first); err != nil {
-			panic(fmt.Sprintf("failed to process committed block (%d:%X): %v", first.Height, first.Hash(), err))
-		}
-
-		state.context.recordConsMetrics(first)
-
-		delete(state.queue, first.Height)
-		state.blocksSynced++
-
-		return pcBlockProcessed{height: first.Height, peerID: firstItem.peerID}, nil
-	}
-
-	return noOp, nil
-}
--- a/internal/blocksync/v2/processor_context.go
+++ b/internal/blocksync/v2/processor_context.go
@@ -1,112 +0,0 @@
-package v2
-
-import (
-	"fmt"
-
-	cons "github.com/tendermint/tendermint/internal/consensus"
-	"github.com/tendermint/tendermint/state"
-	"github.com/tendermint/tendermint/types"
-)
-
-type processorContext interface {
-	applyBlock(blockID types.BlockID, block *types.Block) error
-	verifyCommit(chainID string, blockID types.BlockID, height int64, commit *types.Commit) error
-	saveBlock(block *types.Block, blockParts *types.PartSet, seenCommit *types.Commit)
-	tmState() state.State
-	setState(state.State)
-	recordConsMetrics(block *types.Block)
-}
-
-type pContext struct {
-	store   blockStore
-	applier blockApplier
-	state   state.State
-	metrics *cons.Metrics
-}
-
-func newProcessorContext(st blockStore, ex blockApplier, s state.State, m *cons.Metrics) *pContext {
-	return &pContext{
-		store:   st,
-		applier: ex,
-		state:   s,
-		metrics: m,
-	}
-}
-
-func (pc *pContext) applyBlock(blockID types.BlockID, block *types.Block) error {
-	newState, err := pc.applier.ApplyBlock(pc.state, blockID, block)
-	pc.state = newState
-	return err
-}
-
-func (pc pContext) tmState() state.State {
-	return pc.state
-}
-
-func (pc *pContext) setState(state state.State) {
-	pc.state = state
-}
-
-func (pc pContext) verifyCommit(chainID string, blockID types.BlockID, height int64, commit *types.Commit) error {
-	return pc.state.Validators.VerifyCommitLight(chainID, blockID, height, commit)
-}
-
-func (pc *pContext) saveBlock(block *types.Block, blockParts *types.PartSet, seenCommit *types.Commit) {
-	pc.store.SaveBlock(block, blockParts, seenCommit)
-}
-
-func (pc *pContext) recordConsMetrics(block *types.Block) {
-	pc.metrics.RecordConsMetrics(block)
-}
-
-type mockPContext struct {
-	applicationBL  []int64
-	verificationBL []int64
-	state          state.State
-}
-
-func newMockProcessorContext(
-	state state.State,
-	verificationBlackList []int64,
-	applicationBlackList []int64) *mockPContext {
-	return &mockPContext{
-		applicationBL:  applicationBlackList,
-		verificationBL: verificationBlackList,
-		state:          state,
-	}
-}
-
-func (mpc *mockPContext) applyBlock(blockID types.BlockID, block *types.Block) error {
-	for _, h := range mpc.applicationBL {
-		if h == block.Height {
-			return fmt.Errorf("generic application error")
-		}
-	}
-	mpc.state.LastBlockHeight = block.Height
-	return nil
-}
-
-func (mpc *mockPContext) verifyCommit(chainID string, blockID types.BlockID, height int64, commit *types.Commit) error {
-	for _, h := range mpc.verificationBL {
-		if h == height {
-			return fmt.Errorf("generic verification error")
-		}
-	}
-	return nil
-}
-
-func (mpc *mockPContext) saveBlock(block *types.Block, blockParts *types.PartSet, seenCommit *types.Commit) {
-
-}
-
-func (mpc *mockPContext) setState(state state.State) {
-	mpc.state = state
-}
-
-func (mpc *mockPContext) tmState() state.State {
-	return mpc.state
-}
-
-func (mpc *mockPContext) recordConsMetrics(block *types.Block) {
-
-}
--- a/internal/blocksync/v2/processor_test.go
+++ b/internal/blocksync/v2/processor_test.go
@@ -1,305 +0,0 @@
-package v2
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-
-	tmState "github.com/tendermint/tendermint/state"
-	"github.com/tendermint/tendermint/types"
-)
-
-// pcBlock is a test helper structure with simple types. Its purpose is to help with test readability.
-type pcBlock struct {
-	pid    string
-	height int64
-}
-
-// params is a test structure used to create processor state.
-type params struct {
-	height       int64
-	items        []pcBlock
-	blocksSynced int
-	verBL        []int64
-	appBL        []int64
-	draining     bool
-}
-
-// makePcBlock makes an empty block.
-func makePcBlock(height int64) *types.Block {
-	return &types.Block{Header: types.Header{Height: height}}
-}
-
-// makeState takes test parameters and creates a specific processor state.
-func makeState(p *params) *pcState {
-	var (
-		tmState = tmState.State{LastBlockHeight: p.height}
-		context = newMockProcessorContext(tmState, p.verBL, p.appBL)
-	)
-	state := newPcState(context)
-
-	for _, item := range p.items {
-		state.enqueue(types.NodeID(item.pid), makePcBlock(item.height), item.height)
-	}
-
-	state.blocksSynced = p.blocksSynced
-	state.draining = p.draining
-	return state
-}
-
-func mBlockResponse(peerID types.NodeID, height int64) scBlockReceived {
-	return scBlockReceived{
-		peerID: peerID,
-		block:  makePcBlock(height),
-	}
-}
-
-type pcFsmMakeStateValues struct {
-	currentState  *params
-	event         Event
-	wantState     *params
-	wantNextEvent Event
-	wantErr       error
-	wantPanic     bool
-}
-
-type testFields struct {
-	name  string
-	steps []pcFsmMakeStateValues
-}
-
-func executeProcessorTests(t *testing.T, tests []testFields) {
-	for _, tt := range tests {
-		tt := tt
-		t.Run(tt.name, func(t *testing.T) {
-			var state *pcState
-			for _, step := range tt.steps {
-				defer func() {
-					r := recover()
-					if (r != nil) != step.wantPanic {
-						t.Errorf("recover = %v, wantPanic = %v", r, step.wantPanic)
-					}
-				}()
-
-				// First step must always initialize the currentState as state.
-				if step.currentState != nil {
-					state = makeState(step.currentState)
-				}
-				if state == nil {
-					panic("Bad (initial?) step")
-				}
-
-				nextEvent, err := state.handle(step.event)
-				t.Log(state)
-				assert.Equal(t, step.wantErr, err)
-				assert.Equal(t, makeState(step.wantState), state)
-				assert.Equal(t, step.wantNextEvent, nextEvent)
-				// Next step may use the wantedState as their currentState.
-				state = makeState(step.wantState)
-			}
-		})
-	}
-}
-
-func TestRProcessPeerError(t *testing.T) {
-	tests := []testFields{
-		{
-			name: "error for existing peer",
-			steps: []pcFsmMakeStateValues{
-				{
-					currentState:  &params{items: []pcBlock{{"P1", 1}, {"P2", 2}}},
-					event:         scPeerError{peerID: "P2"},
-					wantState:     &params{items: []pcBlock{{"P1", 1}}},
-					wantNextEvent: noOp,
-				},
-			},
-		},
-		{
-			name: "error for unknown peer",
-			steps: []pcFsmMakeStateValues{
-				{
-					currentState:  &params{items: []pcBlock{{"P1", 1}, {"P2", 2}}},
-					event:         scPeerError{peerID: "P3"},
-					wantState:     &params{items: []pcBlock{{"P1", 1}, {"P2", 2}}},
-					wantNextEvent: noOp,
-				},
-			},
-		},
-	}
-
-	executeProcessorTests(t, tests)
-}
-
-func TestPcBlockResponse(t *testing.T) {
-	tests := []testFields{
-		{
-			name: "add one block",
-			steps: []pcFsmMakeStateValues{
-				{
-					currentState: &params{}, event: mBlockResponse("P1", 1),
-					wantState: &params{items: []pcBlock{{"P1", 1}}}, wantNextEvent: noOp,
-				},
-			},
-		},
-
-		{
-			name: "add two blocks",
-			steps: []pcFsmMakeStateValues{
-				{
-					currentState: &params{}, event: mBlockResponse("P1", 3),
-					wantState: &params{items: []pcBlock{{"P1", 3}}}, wantNextEvent: noOp,
-				},
-				{ // use previous wantState as currentState,
-					event:     mBlockResponse("P1", 4),
-					wantState: &params{items: []pcBlock{{"P1", 3}, {"P1", 4}}}, wantNextEvent: noOp,
-				},
-			},
-		},
-	}
-
-	executeProcessorTests(t, tests)
-}
-
-func TestRProcessBlockSuccess(t *testing.T) {
-	tests := []testFields{
-		{
-			name: "noop - no blocks over current height",
-			steps: []pcFsmMakeStateValues{
-				{
-					currentState: &params{}, event: rProcessBlock{},
-					wantState: &params{}, wantNextEvent: noOp,
-				},
-			},
-		},
-		{
-			name: "noop - high new blocks",
-			steps: []pcFsmMakeStateValues{
-				{
-					currentState: &params{height: 5, items: []pcBlock{{"P1", 30}, {"P2", 31}}}, event: rProcessBlock{},
-					wantState: &params{height: 5, items: []pcBlock{{"P1", 30}, {"P2", 31}}}, wantNextEvent: noOp,
-				},
-			},
-		},
-		{
-			name: "blocks H+1 and H+2 present",
-			steps: []pcFsmMakeStateValues{
-				{
-					currentState: &params{items: []pcBlock{{"P1", 1}, {"P2", 2}}}, event: rProcessBlock{},
-					wantState:     &params{height: 1, items: []pcBlock{{"P2", 2}}, blocksSynced: 1},
-					wantNextEvent: pcBlockProcessed{height: 1, peerID: "P1"},
-				},
-			},
-		},
-		{
-			name: "blocks H+1 and H+2 present after draining",
-			steps: []pcFsmMakeStateValues{
-				{ // some contiguous blocks - on stop check draining is set
-					currentState:  &params{items: []pcBlock{{"P1", 1}, {"P2", 2}, {"P1", 4}}},
-					event:         scFinishedEv{},
-					wantState:     &params{items: []pcBlock{{"P1", 1}, {"P2", 2}, {"P1", 4}}, draining: true},
-					wantNextEvent: noOp,
-				},
-				{
-					event:         rProcessBlock{},
-					wantState:     &params{height: 1, items: []pcBlock{{"P2", 2}, {"P1", 4}}, blocksSynced: 1, draining: true},
-					wantNextEvent: pcBlockProcessed{height: 1, peerID: "P1"},
-				},
-				{ // finish when H+1 or/and H+2 are missing
-					event:         rProcessBlock{},
-					wantState:     &params{height: 1, items: []pcBlock{{"P2", 2}, {"P1", 4}}, blocksSynced: 1, draining: true},
-					wantNextEvent: pcFinished{tmState: tmState.State{LastBlockHeight: 1}, blocksSynced: 1},
-				},
-			},
-		},
-	}
-
-	executeProcessorTests(t, tests)
-}
-
-func TestRProcessBlockFailures(t *testing.T) {
-	tests := []testFields{
-		{
-			name: "blocks H+1 and H+2 present from different peers - H+1 verification fails ",
-			steps: []pcFsmMakeStateValues{
-				{
-					currentState: &params{items: []pcBlock{{"P1", 1}, {"P2", 2}}, verBL: []int64{1}}, event: rProcessBlock{},
-					wantState:     &params{items: []pcBlock{}, verBL: []int64{1}},
-					wantNextEvent: pcBlockVerificationFailure{height: 1, firstPeerID: "P1", secondPeerID: "P2"},
-				},
-			},
-		},
-		{
-			name: "blocks H+1 and H+2 present from same peer - H+1 applyBlock fails ",
-			steps: []pcFsmMakeStateValues{
-				{
-					currentState: &params{items: []pcBlock{{"P1", 1}, {"P2", 2}}, appBL: []int64{1}}, event: rProcessBlock{},
-					wantState: &params{items: []pcBlock{}, appBL: []int64{1}}, wantPanic: true,
-				},
-			},
-		},
-		{
-			name: "blocks H+1 and H+2 present from same peers - H+1 verification fails ",
-			steps: []pcFsmMakeStateValues{
-				{
-					currentState: &params{height: 0, items: []pcBlock{{"P1", 1}, {"P1", 2}, {"P2", 3}},
-						verBL: []int64{1}}, event: rProcessBlock{},
-					wantState:     &params{height: 0, items: []pcBlock{{"P2", 3}}, verBL: []int64{1}},
-					wantNextEvent: pcBlockVerificationFailure{height: 1, firstPeerID: "P1", secondPeerID: "P1"},
-				},
-			},
-		},
-		{
-			name: "blocks H+1 and H+2 present from different peers - H+1 applyBlock fails ",
-			steps: []pcFsmMakeStateValues{
-				{
-					currentState: &params{items: []pcBlock{{"P1", 1}, {"P2", 2}, {"P2", 3}}, appBL: []int64{1}},
-					event:        rProcessBlock{},
-					wantState:    &params{items: []pcBlock{{"P2", 3}}, appBL: []int64{1}}, wantPanic: true,
-				},
-			},
-		},
-	}
-
-	executeProcessorTests(t, tests)
-}
-
-func TestScFinishedEv(t *testing.T) {
-	tests := []testFields{
-		{
-			name: "no blocks",
-			steps: []pcFsmMakeStateValues{
-				{
-					currentState: &params{height: 100, items: []pcBlock{}, blocksSynced: 100}, event: scFinishedEv{},
-					wantState:     &params{height: 100, items: []pcBlock{}, blocksSynced: 100},
-					wantNextEvent: pcFinished{tmState: tmState.State{LastBlockHeight: 100}, blocksSynced: 100},
-				},
-			},
-		},
-		{
-			name: "maxHeight+1 block present",
-			steps: []pcFsmMakeStateValues{
-				{
-					currentState: &params{height: 100, items: []pcBlock{
-						{"P1", 101}}, blocksSynced: 100}, event: scFinishedEv{},
-					wantState:     &params{height: 100, items: []pcBlock{{"P1", 101}}, blocksSynced: 100},
-					wantNextEvent: pcFinished{tmState: tmState.State{LastBlockHeight: 100}, blocksSynced: 100},
-				},
-			},
-		},
-		{
-			name: "more blocks present",
-			steps: []pcFsmMakeStateValues{
-				{
-					currentState: &params{height: 100, items: []pcBlock{
-						{"P1", 101}, {"P1", 102}}, blocksSynced: 100}, event: scFinishedEv{},
-					wantState: &params{height: 100, items: []pcBlock{
-						{"P1", 101}, {"P1", 102}}, blocksSynced: 100, draining: true},
-					wantNextEvent: noOp,
-					wantErr:       nil,
-				},
-			},
-		},
-	}
-
-	executeProcessorTests(t, tests)
-}
--- a/internal/blocksync/v2/reactor.go
+++ b/internal/blocksync/v2/reactor.go
@@ -1,643 +0,0 @@
-package v2
-
-import (
-	"errors"
-	"fmt"
-	"time"
-
-	proto "github.com/gogo/protobuf/proto"
-
-	bc "github.com/tendermint/tendermint/internal/blocksync"
-	"github.com/tendermint/tendermint/internal/blocksync/v2/internal/behavior"
-	cons "github.com/tendermint/tendermint/internal/consensus"
-	tmsync "github.com/tendermint/tendermint/internal/libs/sync"
-	"github.com/tendermint/tendermint/internal/p2p"
-	"github.com/tendermint/tendermint/libs/log"
-	"github.com/tendermint/tendermint/libs/sync"
-	bcproto "github.com/tendermint/tendermint/proto/tendermint/blocksync"
-	"github.com/tendermint/tendermint/state"
-	"github.com/tendermint/tendermint/types"
-)
-
-const (
-	// chBufferSize is the buffer size of all event channels.
-	chBufferSize int = 1000
-)
-
-type blockStore interface {
-	LoadBlock(height int64) *types.Block
-	SaveBlock(*types.Block, *types.PartSet, *types.Commit)
-	Base() int64
-	Height() int64
-}
-
-// BlockchainReactor handles block sync protocol.
-type BlockchainReactor struct {
-	p2p.BaseReactor
-
-	blockSync   *sync.AtomicBool // enable block sync on start when it's been Set
-	stateSynced bool             // set to true when SwitchToBlockSync is called by state sync
-	scheduler   *Routine
-	processor   *Routine
-	logger      log.Logger
-
-	mtx           tmsync.RWMutex
-	maxPeerHeight int64
-	syncHeight    int64
-	events        chan Event // non-nil during a block sync
-
-	reporter behavior.Reporter
-	io       iIO
-	store    blockStore
-
-	syncStartTime   time.Time
-	syncStartHeight int64
-	lastSyncRate    float64 // # blocks sync per sec base on the last 100 blocks
-}
-
-type blockApplier interface {
-	ApplyBlock(state state.State, blockID types.BlockID, block *types.Block) (state.State, error)
-}
-
-// XXX: unify naming in this package around tmState
-func newReactor(state state.State, store blockStore, reporter behavior.Reporter,
-	blockApplier blockApplier, blockSync bool, metrics *cons.Metrics) *BlockchainReactor {
-	initHeight := state.LastBlockHeight + 1
-	if initHeight == 1 {
-		initHeight = state.InitialHeight
-	}
-	scheduler := newScheduler(initHeight, time.Now())
-	pContext := newProcessorContext(store, blockApplier, state, metrics)
-	// TODO: Fix naming to just newProcesssor
-	// newPcState requires a processorContext
-	processor := newPcState(pContext)
-
-	return &BlockchainReactor{
-		scheduler:       newRoutine("scheduler", scheduler.handle, chBufferSize),
-		processor:       newRoutine("processor", processor.handle, chBufferSize),
-		store:           store,
-		reporter:        reporter,
-		logger:          log.NewNopLogger(),
-		blockSync:       sync.NewBool(blockSync),
-		syncStartHeight: initHeight,
-		syncStartTime:   time.Time{},
-		lastSyncRate:    0,
-	}
-}
-
-// NewBlockchainReactor creates a new reactor instance.
-func NewBlockchainReactor(
-	state state.State,
-	blockApplier blockApplier,
-	store blockStore,
-	blockSync bool,
-	metrics *cons.Metrics) *BlockchainReactor {
-	reporter := behavior.NewMockReporter()
-	return newReactor(state, store, reporter, blockApplier, blockSync, metrics)
-}
-
-// SetSwitch implements Reactor interface.
-func (r *BlockchainReactor) SetSwitch(sw *p2p.Switch) {
-	r.Switch = sw
-	if sw != nil {
-		r.io = newSwitchIo(sw)
-	} else {
-		r.io = nil
-	}
-}
-
-func (r *BlockchainReactor) setMaxPeerHeight(height int64) {
-	r.mtx.Lock()
-	defer r.mtx.Unlock()
-	if height > r.maxPeerHeight {
-		r.maxPeerHeight = height
-	}
-}
-
-func (r *BlockchainReactor) setSyncHeight(height int64) {
-	r.mtx.Lock()
-	defer r.mtx.Unlock()
-	r.syncHeight = height
-}
-
-// SyncHeight returns the height to which the BlockchainReactor has synced.
-func (r *BlockchainReactor) SyncHeight() int64 {
-	r.mtx.RLock()
-	defer r.mtx.RUnlock()
-	return r.syncHeight
-}
-
-// SetLogger sets the logger of the reactor.
-func (r *BlockchainReactor) SetLogger(logger log.Logger) {
-	r.logger = logger
-	r.scheduler.setLogger(logger)
-	r.processor.setLogger(logger)
-}
-
-// Start implements cmn.Service interface
-func (r *BlockchainReactor) Start() error {
-	r.reporter = behavior.NewSwitchReporter(r.BaseReactor.Switch)
-	if r.blockSync.IsSet() {
-		err := r.startSync(nil)
-		if err != nil {
-			return fmt.Errorf("failed to start block sync: %w", err)
-		}
-	}
-	return nil
-}
-
-// startSync begins a block sync, signaled by r.events being non-nil. If state is non-nil,
-// the scheduler and processor is updated with this state on startup.
-func (r *BlockchainReactor) startSync(state *state.State) error {
-	r.mtx.Lock()
-	defer r.mtx.Unlock()
-	if r.events != nil {
-		return errors.New("block sync already in progress")
-	}
-	r.events = make(chan Event, chBufferSize)
-	go r.scheduler.start()
-	go r.processor.start()
-	if state != nil {
-		<-r.scheduler.ready()
-		<-r.processor.ready()
-		r.scheduler.send(bcResetState{state: *state})
-		r.processor.send(bcResetState{state: *state})
-	}
-	go r.demux(r.events)
-	return nil
-}
-
-// endSync ends a block sync
-func (r *BlockchainReactor) endSync() {
-	r.mtx.Lock()
-	defer r.mtx.Unlock()
-	if r.events != nil {
-		close(r.events)
-	}
-	r.events = nil
-	r.scheduler.stop()
-	r.processor.stop()
-}
-
-// SwitchToBlockSync is called by the state sync reactor when switching to block sync.
-func (r *BlockchainReactor) SwitchToBlockSync(state state.State) error {
-	r.stateSynced = true
-	state = state.Copy()
-
-	err := r.startSync(&state)
-	if err == nil {
-		r.syncStartTime = time.Now()
-	}
-
-	return err
-}
-
-// reactor generated ticker events:
-// ticker for cleaning peers
-type rTryPrunePeer struct {
-	priorityHigh
-	time time.Time
-}
-
-func (e rTryPrunePeer) String() string {
-	return fmt.Sprintf("rTryPrunePeer{%v}", e.time)
-}
-
-// ticker event for scheduling block requests
-type rTrySchedule struct {
-	priorityHigh
-	time time.Time
-}
-
-func (e rTrySchedule) String() string {
-	return fmt.Sprintf("rTrySchedule{%v}", e.time)
-}
-
-// ticker for block processing
-type rProcessBlock struct {
-	priorityNormal
-}
-
-func (e rProcessBlock) String() string {
-	return "rProcessBlock"
-}
-
-// reactor generated events based on blockchain related messages from peers:
-// blockResponse message received from a peer
-type bcBlockResponse struct {
-	priorityNormal
-	time   time.Time
-	peerID types.NodeID
-	size   int64
-	block  *types.Block
-}
-
-func (resp bcBlockResponse) String() string {
-	return fmt.Sprintf("bcBlockResponse{%d#%X (size: %d bytes) from %v at %v}",
-		resp.block.Height, resp.block.Hash(), resp.size, resp.peerID, resp.time)
-}
-
-// blockNoResponse message received from a peer
-type bcNoBlockResponse struct {
-	priorityNormal
-	time   time.Time
-	peerID types.NodeID
-	height int64
-}
-
-func (resp bcNoBlockResponse) String() string {
-	return fmt.Sprintf("bcNoBlockResponse{%v has no block at height %d at %v}",
-		resp.peerID, resp.height, resp.time)
-}
-
-// statusResponse message received from a peer
-type bcStatusResponse struct {
-	priorityNormal
-	time   time.Time
-	peerID types.NodeID
-	base   int64
-	height int64
-}
-
-func (resp bcStatusResponse) String() string {
-	return fmt.Sprintf("bcStatusResponse{%v is at height %d (base: %d) at %v}",
-		resp.peerID, resp.height, resp.base, resp.time)
-}
-
-// new peer is connected
-type bcAddNewPeer struct {
-	priorityNormal
-	peerID types.NodeID
-}
-
-func (resp bcAddNewPeer) String() string {
-	return fmt.Sprintf("bcAddNewPeer{%v}", resp.peerID)
-}
-
-// existing peer is removed
-type bcRemovePeer struct {
-	priorityHigh
-	peerID types.NodeID
-	reason interface{}
-}
-
-func (resp bcRemovePeer) String() string {
-	return fmt.Sprintf("bcRemovePeer{%v due to %v}", resp.peerID, resp.reason)
-}
-
-// resets the scheduler and processor state, e.g. following a switch from state syncing
-type bcResetState struct {
-	priorityHigh
-	state state.State
-}
-
-func (e bcResetState) String() string {
-	return fmt.Sprintf("bcResetState{%v}", e.state)
-}
-
-// Takes the channel as a parameter to avoid race conditions on r.events.
-func (r *BlockchainReactor) demux(events <-chan Event) {
-	var lastHundred = time.Now()
-
-	var (
-		processBlockFreq = 20 * time.Millisecond
-		doProcessBlockCh = make(chan struct{}, 1)
-		doProcessBlockTk = time.NewTicker(processBlockFreq)
-	)
-	defer doProcessBlockTk.Stop()
-
-	var (
-		prunePeerFreq = 1 * time.Second
-		doPrunePeerCh = make(chan struct{}, 1)
-		doPrunePeerTk = time.NewTicker(prunePeerFreq)
-	)
-	defer doPrunePeerTk.Stop()
-
-	var (
-		scheduleFreq = 20 * time.Millisecond
-		doScheduleCh = make(chan struct{}, 1)
-		doScheduleTk = time.NewTicker(scheduleFreq)
-	)
-	defer doScheduleTk.Stop()
-
-	var (
-		statusFreq = 10 * time.Second
-		doStatusCh = make(chan struct{}, 1)
-		doStatusTk = time.NewTicker(statusFreq)
-	)
-	defer doStatusTk.Stop()
-	doStatusCh <- struct{}{} // immediately broadcast to get status of existing peers
-
-	// Memoize the scSchedulerFail error to avoid printing it every scheduleFreq.
-	var scSchedulerFailErr error
-
-	// XXX: Extract timers to make testing atemporal
-	for {
-		select {
-		// Pacers: send at most per frequency but don't saturate
-		case <-doProcessBlockTk.C:
-			select {
-			case doProcessBlockCh <- struct{}{}:
-			default:
-			}
-		case <-doPrunePeerTk.C:
-			select {
-			case doPrunePeerCh <- struct{}{}:
-			default:
-			}
-		case <-doScheduleTk.C:
-			select {
-			case doScheduleCh <- struct{}{}:
-			default:
-			}
-		case <-doStatusTk.C:
-			select {
-			case doStatusCh <- struct{}{}:
-			default:
-			}
-
-		// Tickers: perform tasks periodically
-		case <-doScheduleCh:
-			r.scheduler.send(rTrySchedule{time: time.Now()})
-		case <-doPrunePeerCh:
-			r.scheduler.send(rTryPrunePeer{time: time.Now()})
-		case <-doProcessBlockCh:
-			r.processor.send(rProcessBlock{})
-		case <-doStatusCh:
-			if err := r.io.broadcastStatusRequest(); err != nil {
-				r.logger.Error("Error broadcasting status request", "err", err)
-			}
-
-		// Events from peers. Closing the channel signals event loop termination.
-		case event, ok := <-events:
-			if !ok {
-				r.logger.Info("Stopping event processing")
-				return
-			}
-			switch event := event.(type) {
-			case bcStatusResponse:
-				r.setMaxPeerHeight(event.height)
-				r.scheduler.send(event)
-			case bcAddNewPeer, bcRemovePeer, bcBlockResponse, bcNoBlockResponse:
-				r.scheduler.send(event)
-			default:
-				r.logger.Error("Received unexpected event", "event", fmt.Sprintf("%T", event))
-			}
-
-		// Incremental events from scheduler
-		case event := <-r.scheduler.next():
-			switch event := event.(type) {
-			case scBlockReceived:
-				r.processor.send(event)
-			case scPeerError:
-				r.processor.send(event)
-				if err := r.reporter.Report(behavior.BadMessage(event.peerID, "scPeerError")); err != nil {
-					r.logger.Error("Error reporting peer", "err", err)
-				}
-			case scBlockRequest:
-				peer := r.Switch.Peers().Get(event.peerID)
-				if peer == nil {
-					r.logger.Error("Wanted to send block request, but no such peer", "peerID", event.peerID)
-					continue
-				}
-				if err := r.io.sendBlockRequest(peer, event.height); err != nil {
-					r.logger.Error("Error sending block request", "err", err)
-				}
-			case scFinishedEv:
-				r.processor.send(event)
-				r.scheduler.stop()
-			case scSchedulerFail:
-				if scSchedulerFailErr != event.reason {
-					r.logger.Error("Scheduler failure", "err", event.reason.Error())
-					scSchedulerFailErr = event.reason
-				}
-			case scPeersPruned:
-				// Remove peers from the processor.
-				for _, peerID := range event.peers {
-					r.processor.send(scPeerError{peerID: peerID, reason: errors.New("peer was pruned")})
-				}
-				r.logger.Debug("Pruned peers", "count", len(event.peers))
-			case noOpEvent:
-			default:
-				r.logger.Error("Received unexpected scheduler event", "event", fmt.Sprintf("%T", event))
-			}
-
-		// Incremental events from processor
-		case event := <-r.processor.next():
-			switch event := event.(type) {
-			case pcBlockProcessed:
-				r.setSyncHeight(event.height)
-				if (r.syncHeight-r.syncStartHeight)%100 == 0 {
-					newSyncRate := 100 / time.Since(lastHundred).Seconds()
-					if r.lastSyncRate == 0 {
-						r.lastSyncRate = newSyncRate
-					} else {
-						r.lastSyncRate = 0.9*r.lastSyncRate + 0.1*newSyncRate
-					}
-					r.logger.Info("block sync Rate", "height", r.syncHeight,
-						"max_peer_height", r.maxPeerHeight, "blocks/s", r.lastSyncRate)
-					lastHundred = time.Now()
-				}
-				r.scheduler.send(event)
-			case pcBlockVerificationFailure:
-				r.scheduler.send(event)
-			case pcFinished:
-				r.logger.Info("block sync complete, switching to consensus")
-				if !r.io.trySwitchToConsensus(event.tmState, event.blocksSynced > 0 || r.stateSynced) {
-					r.logger.Error("Failed to switch to consensus reactor")
-				}
-				r.endSync()
-				r.blockSync.UnSet()
-				return
-			case noOpEvent:
-			default:
-				r.logger.Error("Received unexpected processor event", "event", fmt.Sprintf("%T", event))
-			}
-
-		// Terminal event from scheduler
-		case err := <-r.scheduler.final():
-			switch err {
-			case nil:
-				r.logger.Info("Scheduler stopped")
-			default:
-				r.logger.Error("Scheduler aborted with error", "err", err)
-			}
-
-		// Terminal event from processor
-		case err := <-r.processor.final():
-			switch err {
-			case nil:
-				r.logger.Info("Processor stopped")
-			default:
-				r.logger.Error("Processor aborted with error", "err", err)
-			}
-		}
-	}
-}
-
-// Stop implements cmn.Service interface.
-func (r *BlockchainReactor) Stop() error {
-	r.logger.Info("reactor stopping")
-	r.endSync()
-	r.logger.Info("reactor stopped")
-	return nil
-}
-
-// Receive implements Reactor by handling different message types.
-// XXX: do not call any methods that can block or incur heavy processing.
-// https://github.com/tendermint/tendermint/issues/2888
-func (r *BlockchainReactor) Receive(chID byte, src p2p.Peer, msgBytes []byte) {
-	logger := r.logger.With("src", src.ID(), "chID", chID)
-
-	msgProto := new(bcproto.Message)
-
-	if err := proto.Unmarshal(msgBytes, msgProto); err != nil {
-		logger.Error("error decoding message", "err", err)
-		_ = r.reporter.Report(behavior.BadMessage(src.ID(), err.Error()))
-		return
-	}
-
-	if err := msgProto.Validate(); err != nil {
-		logger.Error("peer sent us an invalid msg", "msg", msgProto, "err", err)
-		_ = r.reporter.Report(behavior.BadMessage(src.ID(), err.Error()))
-		return
-	}
-
-	r.logger.Debug("received", "msg", msgProto)
-
-	switch msg := msgProto.Sum.(type) {
-	case *bcproto.Message_StatusRequest:
-		if err := r.io.sendStatusResponse(r.store.Base(), r.store.Height(), src); err != nil {
-			logger.Error("Could not send status message to src peer")
-		}
-
-	case *bcproto.Message_BlockRequest:
-		block := r.store.LoadBlock(msg.BlockRequest.Height)
-		if block != nil {
-			if err := r.io.sendBlockToPeer(block, src); err != nil {
-				logger.Error("Could not send block message to src peer", "err", err)
-			}
-		} else {
-			logger.Info("peer asking for a block we don't have", "height", msg.BlockRequest.Height)
-			if err := r.io.sendBlockNotFound(msg.BlockRequest.Height, src); err != nil {
-				logger.Error("Couldn't send block not found msg", "err", err)
-			}
-		}
-
-	case *bcproto.Message_StatusResponse:
-		r.mtx.RLock()
-		if r.events != nil {
-			r.events <- bcStatusResponse{
-				peerID: src.ID(),
-				base:   msg.StatusResponse.Base,
-				height: msg.StatusResponse.Height,
-			}
-		}
-		r.mtx.RUnlock()
-
-	case *bcproto.Message_BlockResponse:
-		bi, err := types.BlockFromProto(msg.BlockResponse.Block)
-		if err != nil {
-			logger.Error("error transitioning block from protobuf", "err", err)
-			_ = r.reporter.Report(behavior.BadMessage(src.ID(), err.Error()))
-			return
-		}
-		r.mtx.RLock()
-		if r.events != nil {
-			r.events <- bcBlockResponse{
-				peerID: src.ID(),
-				block:  bi,
-				size:   int64(len(msgBytes)),
-				time:   time.Now(),
-			}
-		}
-		r.mtx.RUnlock()
-
-	case *bcproto.Message_NoBlockResponse:
-		r.mtx.RLock()
-		if r.events != nil {
-			r.events <- bcNoBlockResponse{
-				peerID: src.ID(),
-				height: msg.NoBlockResponse.Height,
-				time:   time.Now(),
-			}
-		}
-		r.mtx.RUnlock()
-	}
-}
-
-// AddPeer implements Reactor interface
-func (r *BlockchainReactor) AddPeer(peer p2p.Peer) {
-	err := r.io.sendStatusResponse(r.store.Base(), r.store.Height(), peer)
-	if err != nil {
-		r.logger.Error("could not send our status to the new peer", "peer", peer.ID, "err", err)
-	}
-
-	err = r.io.sendStatusRequest(peer)
-	if err != nil {
-		r.logger.Error("could not send status request to the new peer", "peer", peer.ID, "err", err)
-	}
-
-	r.mtx.RLock()
-	defer r.mtx.RUnlock()
-	if r.events != nil {
-		r.events <- bcAddNewPeer{peerID: peer.ID()}
-	}
-}
-
-// RemovePeer implements Reactor interface.
-func (r *BlockchainReactor) RemovePeer(peer p2p.Peer, reason interface{}) {
-	r.mtx.RLock()
-	defer r.mtx.RUnlock()
-	if r.events != nil {
-		r.events <- bcRemovePeer{
-			peerID: peer.ID(),
-			reason: reason,
-		}
-	}
-}
-
-// GetChannels implements Reactor
-func (r *BlockchainReactor) GetChannels() []*p2p.ChannelDescriptor {
-	return []*p2p.ChannelDescriptor{
-		{
-			ID:                  BlockchainChannel,
-			Priority:            5,
-			SendQueueCapacity:   2000,
-			RecvBufferCapacity:  1024,
-			RecvMessageCapacity: bc.MaxMsgSize,
-		},
-	}
-}
-
-func (r *BlockchainReactor) GetMaxPeerBlockHeight() int64 {
-	r.mtx.RLock()
-	defer r.mtx.RUnlock()
-	return r.maxPeerHeight
-}
-
-func (r *BlockchainReactor) GetTotalSyncedTime() time.Duration {
-	if !r.blockSync.IsSet() || r.syncStartTime.IsZero() {
-		return time.Duration(0)
-	}
-	return time.Since(r.syncStartTime)
-}
-
-func (r *BlockchainReactor) GetRemainingSyncTime() time.Duration {
-	if !r.blockSync.IsSet() {
-		return time.Duration(0)
-	}
-
-	r.mtx.RLock()
-	defer r.mtx.RUnlock()
-
-	targetSyncs := r.maxPeerHeight - r.syncStartHeight
-	currentSyncs := r.syncHeight - r.syncStartHeight + 1
-	if currentSyncs < 0 || r.lastSyncRate < 0.001 {
-		return time.Duration(0)
-	}
-
-	remain := float64(targetSyncs-currentSyncs) / r.lastSyncRate
-
-	return time.Duration(int64(remain * float64(time.Second)))
-}
--- a/internal/blocksync/v2/reactor_test.go
+++ b/internal/blocksync/v2/reactor_test.go
@@ -1,532 +0,0 @@
-package v2
-
-import (
-	"fmt"
-	"net"
-	"os"
-	"sync"
-	"testing"
-	"time"
-
-	"github.com/gogo/protobuf/proto"
-	"github.com/stretchr/testify/assert"
-	"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/internal/blocksync/v2/internal/behavior"
-	cons "github.com/tendermint/tendermint/internal/consensus"
-	"github.com/tendermint/tendermint/internal/mempool/mock"
-	"github.com/tendermint/tendermint/internal/p2p"
-	"github.com/tendermint/tendermint/internal/p2p/conn"
-	"github.com/tendermint/tendermint/internal/test/factory"
-	"github.com/tendermint/tendermint/libs/log"
-	"github.com/tendermint/tendermint/libs/service"
-	bcproto "github.com/tendermint/tendermint/proto/tendermint/blocksync"
-	"github.com/tendermint/tendermint/proxy"
-	sm "github.com/tendermint/tendermint/state"
-	sf "github.com/tendermint/tendermint/state/test/factory"
-	tmstore "github.com/tendermint/tendermint/store"
-	"github.com/tendermint/tendermint/types"
-)
-
-type mockPeer struct {
-	service.Service
-	id types.NodeID
-}
-
-func (mp mockPeer) FlushStop()           {}
-func (mp mockPeer) ID() types.NodeID     { return mp.id }
-func (mp mockPeer) RemoteIP() net.IP     { return net.IP{} }
-func (mp mockPeer) RemoteAddr() net.Addr { return &net.TCPAddr{IP: mp.RemoteIP(), Port: 8800} }
-
-func (mp mockPeer) IsOutbound() bool   { return true }
-func (mp mockPeer) IsPersistent() bool { return true }
-func (mp mockPeer) CloseConn() error   { return nil }
-
-func (mp mockPeer) NodeInfo() types.NodeInfo {
-	return types.NodeInfo{
-		NodeID:     "",
-		ListenAddr: "",
-	}
-}
-func (mp mockPeer) Status() conn.ConnectionStatus { return conn.ConnectionStatus{} }
-func (mp mockPeer) SocketAddr() *p2p.NetAddress   { return &p2p.NetAddress{} }
-
-func (mp mockPeer) Send(byte, []byte) bool    { return true }
-func (mp mockPeer) TrySend(byte, []byte) bool { return true }
-
-func (mp mockPeer) Set(string, interface{}) {}
-func (mp mockPeer) Get(string) interface{}  { return struct{}{} }
-
-//nolint:unused
-type mockBlockStore struct {
-	blocks map[int64]*types.Block
-}
-
-//nolint:unused
-func (ml *mockBlockStore) Height() int64 {
-	return int64(len(ml.blocks))
-}
-
-//nolint:unused
-func (ml *mockBlockStore) LoadBlock(height int64) *types.Block {
-	return ml.blocks[height]
-}
-
-//nolint:unused
-func (ml *mockBlockStore) SaveBlock(block *types.Block, part *types.PartSet, commit *types.Commit) {
-	ml.blocks[block.Height] = block
-}
-
-type mockBlockApplier struct {
-}
-
-// XXX: Add whitelist/blacklist?
-func (mba *mockBlockApplier) ApplyBlock(
-	state sm.State, blockID types.BlockID, block *types.Block,
-) (sm.State, error) {
-	state.LastBlockHeight++
-	return state, nil
-}
-
-type mockSwitchIo struct {
-	mtx                 sync.Mutex
-	switchedToConsensus bool
-	numStatusResponse   int
-	numBlockResponse    int
-	numNoBlockResponse  int
-	numStatusRequest    int
-}
-
-var _ iIO = (*mockSwitchIo)(nil)
-
-func (sio *mockSwitchIo) sendBlockRequest(_ p2p.Peer, _ int64) error {
-	return nil
-}
-
-func (sio *mockSwitchIo) sendStatusResponse(_, _ int64, _ p2p.Peer) error {
-	sio.mtx.Lock()
-	defer sio.mtx.Unlock()
-	sio.numStatusResponse++
-	return nil
-}
-
-func (sio *mockSwitchIo) sendBlockToPeer(_ *types.Block, _ p2p.Peer) error {
-	sio.mtx.Lock()
-	defer sio.mtx.Unlock()
-	sio.numBlockResponse++
-	return nil
-}
-
-func (sio *mockSwitchIo) sendBlockNotFound(_ int64, _ p2p.Peer) error {
-	sio.mtx.Lock()
-	defer sio.mtx.Unlock()
-	sio.numNoBlockResponse++
-	return nil
-}
-
-func (sio *mockSwitchIo) trySwitchToConsensus(_ sm.State, _ bool) bool {
-	sio.mtx.Lock()
-	defer sio.mtx.Unlock()
-	sio.switchedToConsensus = true
-	return true
-}
-
-func (sio *mockSwitchIo) broadcastStatusRequest() error {
-	return nil
-}
-
-func (sio *mockSwitchIo) sendStatusRequest(_ p2p.Peer) error {
-	sio.mtx.Lock()
-	defer sio.mtx.Unlock()
-	sio.numStatusRequest++
-	return nil
-}
-
-type testReactorParams struct {
-	logger      log.Logger
-	genDoc      *types.GenesisDoc
-	privVals    []types.PrivValidator
-	startHeight int64
-	mockA       bool
-}
-
-func newTestReactor(t *testing.T, p testReactorParams) *BlockchainReactor {
-	store, state, _ := newReactorStore(t, p.genDoc, p.privVals, p.startHeight)
-	reporter := behavior.NewMockReporter()
-
-	var appl blockApplier
-
-	if p.mockA {
-		appl = &mockBlockApplier{}
-	} else {
-		app := &testApp{}
-		cc := proxy.NewLocalClientCreator(app)
-		proxyApp := proxy.NewAppConns(cc)
-		err := proxyApp.Start()
-		require.NoError(t, err)
-		db := dbm.NewMemDB()
-		stateStore := sm.NewStore(db)
-		blockStore := tmstore.NewBlockStore(dbm.NewMemDB())
-		appl = sm.NewBlockExecutor(
-			stateStore, p.logger, proxyApp.Consensus(), mock.Mempool{}, sm.EmptyEvidencePool{}, blockStore)
-		err = stateStore.Save(state)
-		require.NoError(t, err)
-	}
-
-	r := newReactor(state, store, reporter, appl, true, cons.NopMetrics())
-	logger := log.TestingLogger()
-	r.SetLogger(logger.With("module", "blockchain"))
-
-	return r
-}
-
-// This test is left here and not deleted to retain the termination cases for
-// future improvement in [#4482](https://github.com/tendermint/tendermint/issues/4482).
-// func TestReactorTerminationScenarios(t *testing.T) {
-
-// 	config := cfg.ResetTestRoot("blockchain_reactor_v2_test")
-// 	defer os.RemoveAll(config.RootDir)
-// 	genDoc, privVals := randGenesisDoc(config.ChainID(), 1, false, 30)
-// 	refStore, _, _ := newReactorStore(genDoc, privVals, 20)
-
-// 	params := testReactorParams{
-// 		logger:      log.TestingLogger(),
-// 		genDoc:      genDoc,
-// 		privVals:    privVals,
-// 		startHeight: 10,
-// 		bufferSize:  100,
-// 		mockA:       true,
-// 	}
-
-// 	type testEvent struct {
-// 		evType string
-// 		peer   string
-// 		height int64
-// 	}
-
-// 	tests := []struct {
-// 		name   string
-// 		params testReactorParams
-// 		msgs   []testEvent
-// 	}{
-// 		{
-// 			name:   "simple termination on max peer height - one peer",
-// 			params: params,
-// 			msgs: []testEvent{
-// 				{evType: "AddPeer", peer: "P1"},
-// 				{evType: "ReceiveS", peer: "P1", height: 13},
-// 				{evType: "BlockReq"},
-// 				{evType: "ReceiveB", peer: "P1", height: 11},
-// 				{evType: "BlockReq"},
-// 				{evType: "BlockReq"},
-// 				{evType: "ReceiveB", peer: "P1", height: 12},
-// 				{evType: "Process"},
-// 				{evType: "ReceiveB", peer: "P1", height: 13},
-// 				{evType: "Process"},
-// 			},
-// 		},
-// 		{
-// 			name:   "simple termination on max peer height - two peers",
-// 			params: params,
-// 			msgs: []testEvent{
-// 				{evType: "AddPeer", peer: "P1"},
-// 				{evType: "AddPeer", peer: "P2"},
-// 				{evType: "ReceiveS", peer: "P1", height: 13},
-// 				{evType: "ReceiveS", peer: "P2", height: 15},
-// 				{evType: "BlockReq"},
-// 				{evType: "BlockReq"},
-// 				{evType: "ReceiveB", peer: "P1", height: 11},
-// 				{evType: "ReceiveB", peer: "P2", height: 12},
-// 				{evType: "Process"},
-// 				{evType: "BlockReq"},
-// 				{evType: "BlockReq"},
-// 				{evType: "ReceiveB", peer: "P1", height: 13},
-// 				{evType: "Process"},
-// 				{evType: "ReceiveB", peer: "P2", height: 14},
-// 				{evType: "Process"},
-// 				{evType: "BlockReq"},
-// 				{evType: "ReceiveB", peer: "P2", height: 15},
-// 				{evType: "Process"},
-// 			},
-// 		},
-// 		{
-// 			name:   "termination on max peer height - two peers, noBlock error",
-// 			params: params,
-// 			msgs: []testEvent{
-// 				{evType: "AddPeer", peer: "P1"},
-// 				{evType: "AddPeer", peer: "P2"},
-// 				{evType: "ReceiveS", peer: "P1", height: 13},
-// 				{evType: "ReceiveS", peer: "P2", height: 15},
-// 				{evType: "BlockReq"},
-// 				{evType: "BlockReq"},
-// 				{evType: "ReceiveNB", peer: "P1", height: 11},
-// 				{evType: "BlockReq"},
-// 				{evType: "ReceiveB", peer: "P2", height: 12},
-// 				{evType: "ReceiveB", peer: "P2", height: 11},
-// 				{evType: "Process"},
-// 				{evType: "BlockReq"},
-// 				{evType: "BlockReq"},
-// 				{evType: "ReceiveB", peer: "P2", height: 13},
-// 				{evType: "Process"},
-// 				{evType: "ReceiveB", peer: "P2", height: 14},
-// 				{evType: "Process"},
-// 				{evType: "BlockReq"},
-// 				{evType: "ReceiveB", peer: "P2", height: 15},
-// 				{evType: "Process"},
-// 			},
-// 		},
-// 		{
-// 			name:   "termination on max peer height - two peers, remove one peer",
-// 			params: params,
-// 			msgs: []testEvent{
-// 				{evType: "AddPeer", peer: "P1"},
-// 				{evType: "AddPeer", peer: "P2"},
-// 				{evType: "ReceiveS", peer: "P1", height: 13},
-// 				{evType: "ReceiveS", peer: "P2", height: 15},
-// 				{evType: "BlockReq"},
-// 				{evType: "BlockReq"},
-// 				{evType: "RemovePeer", peer: "P1"},
-// 				{evType: "BlockReq"},
-// 				{evType: "ReceiveB", peer: "P2", height: 12},
-// 				{evType: "ReceiveB", peer: "P2", height: 11},
-// 				{evType: "Process"},
-// 				{evType: "BlockReq"},
-// 				{evType: "BlockReq"},
-// 				{evType: "ReceiveB", peer: "P2", height: 13},
-// 				{evType: "Process"},
-// 				{evType: "ReceiveB", peer: "P2", height: 14},
-// 				{evType: "Process"},
-// 				{evType: "BlockReq"},
-// 				{evType: "ReceiveB", peer: "P2", height: 15},
-// 				{evType: "Process"},
-// 			},
-// 		},
-// 	}
-
-// 	for _, tt := range tests {
-// 		tt := tt
-// 		t.Run(tt.name, func(t *testing.T) {
-// 			reactor := newTestReactor(params)
-// 			reactor.Start()
-// 			reactor.reporter = behavior.NewMockReporter()
-// 			mockSwitch := &mockSwitchIo{switchedToConsensus: false}
-// 			reactor.io = mockSwitch
-// 			// time for go routines to start
-// 			time.Sleep(time.Millisecond)
-
-// 			for _, step := range tt.msgs {
-// 				switch step.evType {
-// 				case "AddPeer":
-// 					reactor.scheduler.send(bcAddNewPeer{peerID: p2p.ID(step.peer)})
-// 				case "RemovePeer":
-// 					reactor.scheduler.send(bcRemovePeer{peerID: p2p.ID(step.peer)})
-// 				case "ReceiveS":
-// 					reactor.scheduler.send(bcStatusResponse{
-// 						peerID: p2p.ID(step.peer),
-// 						height: step.height,
-// 						time:   time.Now(),
-// 					})
-// 				case "ReceiveB":
-// 					reactor.scheduler.send(bcBlockResponse{
-// 						peerID: p2p.ID(step.peer),
-// 						block:  refStore.LoadBlock(step.height),
-// 						size:   10,
-// 						time:   time.Now(),
-// 					})
-// 				case "ReceiveNB":
-// 					reactor.scheduler.send(bcNoBlockResponse{
-// 						peerID: p2p.ID(step.peer),
-// 						height: step.height,
-// 						time:   time.Now(),
-// 					})
-// 				case "BlockReq":
-// 					reactor.scheduler.send(rTrySchedule{time: time.Now()})
-// 				case "Process":
-// 					reactor.processor.send(rProcessBlock{})
-// 				}
-// 				// give time for messages to propagate between routines
-// 				time.Sleep(time.Millisecond)
-// 			}
-
-// 			// time for processor to finish and reactor to switch to consensus
-// 			time.Sleep(20 * time.Millisecond)
-// 			assert.True(t, mockSwitch.hasSwitchedToConsensus())
-// 			reactor.Stop()
-// 		})
-// 	}
-// }
-
-func TestReactorHelperMode(t *testing.T) {
-	var (
-		channelID = byte(0x40)
-	)
-
-	config := cfg.ResetTestRoot("blockchain_reactor_v2_test")
-	defer os.RemoveAll(config.RootDir)
-	genDoc, privVals := factory.RandGenesisDoc(config, 1, false, 30)
-
-	params := testReactorParams{
-		logger:      log.TestingLogger(),
-		genDoc:      genDoc,
-		privVals:    privVals,
-		startHeight: 20,
-		mockA:       true,
-	}
-
-	type testEvent struct {
-		peer  string
-		event interface{}
-	}
-
-	tests := []struct {
-		name   string
-		params testReactorParams
-		msgs   []testEvent
-	}{
-		{
-			name:   "status request",
-			params: params,
-			msgs: []testEvent{
-				{"P1", bcproto.StatusRequest{}},
-				{"P1", bcproto.BlockRequest{Height: 13}},
-				{"P1", bcproto.BlockRequest{Height: 20}},
-				{"P1", bcproto.BlockRequest{Height: 22}},
-			},
-		},
-	}
-
-	for _, tt := range tests {
-		tt := tt
-		t.Run(tt.name, func(t *testing.T) {
-			reactor := newTestReactor(t, params)
-			mockSwitch := &mockSwitchIo{switchedToConsensus: false}
-			reactor.io = mockSwitch
-			err := reactor.Start()
-			require.NoError(t, err)
-
-			for i := 0; i < len(tt.msgs); i++ {
-				step := tt.msgs[i]
-				switch ev := step.event.(type) {
-				case bcproto.StatusRequest:
-					old := mockSwitch.numStatusResponse
-
-					msgProto := new(bcproto.Message)
-					require.NoError(t, msgProto.Wrap(&ev))
-
-					msgBz, err := proto.Marshal(msgProto)
-					require.NoError(t, err)
-
-					reactor.Receive(channelID, mockPeer{id: types.NodeID(step.peer)}, msgBz)
-					assert.Equal(t, old+1, mockSwitch.numStatusResponse)
-				case bcproto.BlockRequest:
-					if ev.Height > params.startHeight {
-						old := mockSwitch.numNoBlockResponse
-
-						msgProto := new(bcproto.Message)
-						require.NoError(t, msgProto.Wrap(&ev))
-
-						msgBz, err := proto.Marshal(msgProto)
-						require.NoError(t, err)
-
-						reactor.Receive(channelID, mockPeer{id: types.NodeID(step.peer)}, msgBz)
-						assert.Equal(t, old+1, mockSwitch.numNoBlockResponse)
-					} else {
-						old := mockSwitch.numBlockResponse
-
-						msgProto := new(bcproto.Message)
-						require.NoError(t, msgProto.Wrap(&ev))
-
-						msgBz, err := proto.Marshal(msgProto)
-						require.NoError(t, err)
-
-						reactor.Receive(channelID, mockPeer{id: types.NodeID(step.peer)}, msgBz)
-						assert.Equal(t, old+1, mockSwitch.numBlockResponse)
-					}
-				}
-			}
-			err = reactor.Stop()
-			require.NoError(t, err)
-		})
-	}
-}
-
-func TestReactorSetSwitchNil(t *testing.T) {
-	config := cfg.ResetTestRoot("blockchain_reactor_v2_test")
-	defer os.RemoveAll(config.RootDir)
-	genDoc, privVals := factory.RandGenesisDoc(config, 1, false, 30)
-
-	reactor := newTestReactor(t, testReactorParams{
-		logger:   log.TestingLogger(),
-		genDoc:   genDoc,
-		privVals: privVals,
-	})
-	reactor.SetSwitch(nil)
-
-	assert.Nil(t, reactor.Switch)
-	assert.Nil(t, reactor.io)
-}
-
-type testApp struct {
-	abci.BaseApplication
-}
-
-func newReactorStore(
-	t *testing.T,
-	genDoc *types.GenesisDoc,
-	privVals []types.PrivValidator,
-	maxBlockHeight int64) (*tmstore.BlockStore, sm.State, *sm.BlockExecutor) {
-	t.Helper()
-
-	require.Len(t, privVals, 1)
-	app := &testApp{}
-	cc := proxy.NewLocalClientCreator(app)
-	proxyApp := proxy.NewAppConns(cc)
-	err := proxyApp.Start()
-	if err != nil {
-		panic(fmt.Errorf("error start app: %w", err))
-	}
-
-	stateDB := dbm.NewMemDB()
-	blockStore := tmstore.NewBlockStore(dbm.NewMemDB())
-	stateStore := sm.NewStore(stateDB)
-	state, err := sm.MakeGenesisState(genDoc)
-	require.NoError(t, err)
-
-	blockExec := sm.NewBlockExecutor(stateStore, log.TestingLogger(), proxyApp.Consensus(),
-		mock.Mempool{}, sm.EmptyEvidencePool{}, blockStore)
-	err = stateStore.Save(state)
-	require.NoError(t, err)
-
-	// add 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 := factory.MakeVote(
-				privVals[0],
-				lastBlock.Header.ChainID, 0,
-				lastBlock.Header.Height, 0, 2,
-				lastBlockMeta.BlockID,
-				time.Now(),
-			)
-			require.NoError(t, err)
-			lastCommit = types.NewCommit(vote.Height, vote.Round,
-				lastBlockMeta.BlockID, []types.CommitSig{vote.CommitSig()})
-		}
-
-		thisBlock := sf.MakeBlock(state, blockHeight, lastCommit)
-
-		thisParts := thisBlock.MakePartSet(types.BlockPartSizeBytes)
-		blockID := types.BlockID{Hash: thisBlock.Hash(), PartSetHeader: thisParts.Header()}
-
-		state, err = blockExec.ApplyBlock(state, blockID, thisBlock)
-		require.NoError(t, err)
-
-		blockStore.SaveBlock(thisBlock, thisParts, lastCommit)
-	}
-	return blockStore, state, blockExec
-}
--- a/internal/blocksync/v2/routine.go
+++ b/internal/blocksync/v2/routine.go
@@ -1,166 +0,0 @@
-package v2
-
-import (
-	"fmt"
-	"strings"
-	"sync/atomic"
-
-	"github.com/Workiva/go-datastructures/queue"
-
-	"github.com/tendermint/tendermint/libs/log"
-)
-
-type handleFunc = func(event Event) (Event, error)
-
-const historySize = 25
-
-// Routine is a structure that models a finite state machine as serialized
-// stream of events processed by a handle function. This Routine structure
-// handles the concurrency and messaging guarantees. Events are sent via
-// `send` are handled by the `handle` function to produce an iterator
-// `next()`. Calling `stop()` on a routine will conclude processing of all
-// sent events and produce `final()` event representing the terminal state.
-type Routine struct {
-	name    string
-	handle  handleFunc
-	queue   *queue.PriorityQueue
-	history []Event
-	out     chan Event
-	fin     chan error
-	rdy     chan struct{}
-	running *uint32
-	logger  log.Logger
-	metrics *Metrics
-}
-
-func newRoutine(name string, handleFunc handleFunc, bufferSize int) *Routine {
-	return &Routine{
-		name:    name,
-		handle:  handleFunc,
-		queue:   queue.NewPriorityQueue(bufferSize, true),
-		history: make([]Event, 0, historySize),
-		out:     make(chan Event, bufferSize),
-		rdy:     make(chan struct{}, 1),
-		fin:     make(chan error, 1),
-		running: new(uint32),
-		logger:  log.NewNopLogger(),
-		metrics: NopMetrics(),
-	}
-}
-
-func (rt *Routine) setLogger(logger log.Logger) {
-	rt.logger = logger
-}
-
-// nolint:unused
-func (rt *Routine) setMetrics(metrics *Metrics) {
-	rt.metrics = metrics
-}
-
-func (rt *Routine) start() {
-	rt.logger.Info(fmt.Sprintf("%s: run", rt.name))
-	running := atomic.CompareAndSwapUint32(rt.running, uint32(0), uint32(1))
-	if !running {
-		panic(fmt.Sprintf("%s is already running", rt.name))
-	}
-	close(rt.rdy)
-	defer func() {
-		if r := recover(); r != nil {
-			var (
-				b strings.Builder
-				j int
-			)
-			for i := len(rt.history) - 1; i >= 0; i-- {
-				fmt.Fprintf(&b, "%d: %+v\n", j, rt.history[i])
-				j++
-			}
-			panic(fmt.Sprintf("%v\nlast events:\n%v", r, b.String()))
-		}
-		stopped := atomic.CompareAndSwapUint32(rt.running, uint32(1), uint32(0))
-		if !stopped {
-			panic(fmt.Sprintf("%s is failed to stop", rt.name))
-		}
-	}()
-
-	for {
-		events, err := rt.queue.Get(1)
-		if err == queue.ErrDisposed {
-			rt.terminate(nil)
-			return
-		} else if err != nil {
-			rt.terminate(err)
-			return
-		}
-		oEvent, err := rt.handle(events[0].(Event))
-		rt.metrics.EventsHandled.With("routine", rt.name).Add(1)
-		if err != nil {
-			rt.terminate(err)
-			return
-		}
-		rt.metrics.EventsOut.With("routine", rt.name).Add(1)
-		rt.logger.Debug(fmt.Sprintf("%s: produced %T %+v", rt.name, oEvent, oEvent))
-
-		// Skip rTrySchedule and rProcessBlock events as they clutter the history
-		// due to their frequency.
-		switch events[0].(type) {
-		case rTrySchedule:
-		case rProcessBlock:
-		default:
-			rt.history = append(rt.history, events[0].(Event))
-			if len(rt.history) > historySize {
-				rt.history = rt.history[1:]
-			}
-		}
-
-		rt.out <- oEvent
-	}
-}
-
-// XXX: look into returning OpError in the net package
-func (rt *Routine) send(event Event) bool {
-	rt.logger.Debug(fmt.Sprintf("%s: received %T %+v", rt.name, event, event))
-	if !rt.isRunning() {
-		return false
-	}
-	err := rt.queue.Put(event)
-	if err != nil {
-		rt.metrics.EventsShed.With("routine", rt.name).Add(1)
-		rt.logger.Error(fmt.Sprintf("%s: send failed, queue was full/stopped", rt.name))
-		return false
-	}
-
-	rt.metrics.EventsSent.With("routine", rt.name).Add(1)
-	return true
-}
-
-func (rt *Routine) isRunning() bool {
-	return atomic.LoadUint32(rt.running) == 1
-}
-
-func (rt *Routine) next() chan Event {
-	return rt.out
-}
-
-func (rt *Routine) ready() chan struct{} {
-	return rt.rdy
-}
-
-func (rt *Routine) stop() {
-	if !rt.isRunning() { // XXX: this should check rt.queue.Disposed()
-		return
-	}
-
-	rt.logger.Info(fmt.Sprintf("%s: stop", rt.name))
-	rt.queue.Dispose() // this should block until all queue items are free?
-}
-
-func (rt *Routine) final() chan error {
-	return rt.fin
-}
-
-// XXX: Maybe get rid of this
-func (rt *Routine) terminate(reason error) {
-	// We don't close the rt.out channel here, to avoid spinning on the closed channel
-	// in the event loop.
-	rt.fin <- reason
-}
--- a/internal/blocksync/v2/routine_test.go
+++ b/internal/blocksync/v2/routine_test.go
@@ -1,163 +0,0 @@
-package v2
-
-import (
-	"fmt"
-	"testing"
-	"time"
-
-	"github.com/stretchr/testify/assert"
-)
-
-type eventA struct {
-	priorityNormal
-}
-
-var errDone = fmt.Errorf("done")
-
-func simpleHandler(event Event) (Event, error) {
-	if _, ok := event.(eventA); ok {
-		return noOp, errDone
-	}
-	return noOp, nil
-}
-
-func TestRoutineFinal(t *testing.T) {
-	var (
-		bufferSize = 10
-		routine    = newRoutine("simpleRoutine", simpleHandler, bufferSize)
-	)
-
-	assert.False(t, routine.isRunning(),
-		"expected an initialized routine to not be running")
-	go routine.start()
-	<-routine.ready()
-	assert.True(t, routine.isRunning(),
-		"expected an started routine")
-
-	assert.True(t, routine.send(eventA{}),
-		"expected sending to a ready routine to succeed")
-
-	assert.Equal(t, errDone, <-routine.final(),
-		"expected the final event to be done")
-
-	assert.False(t, routine.isRunning(),
-		"expected an completed routine to no longer be running")
-}
-
-func TestRoutineStop(t *testing.T) {
-	var (
-		bufferSize = 10
-		routine    = newRoutine("simpleRoutine", simpleHandler, bufferSize)
-	)
-
-	assert.False(t, routine.send(eventA{}),
-		"expected sending to an unstarted routine to fail")
-
-	go routine.start()
-	<-routine.ready()
-
-	assert.True(t, routine.send(eventA{}),
-		"expected sending to a running routine to succeed")
-
-	routine.stop()
-
-	assert.False(t, routine.send(eventA{}),
-		"expected sending to a stopped routine to fail")
-}
-
-type finalCount struct {
-	count int
-}
-
-func (f finalCount) Error() string {
-	return "end"
-}
-
-func genStatefulHandler(maxCount int) handleFunc {
-	counter := 0
-	return func(event Event) (Event, error) {
-		if _, ok := event.(eventA); ok {
-			counter++
-			if counter >= maxCount {
-				return noOp, finalCount{counter}
-			}
-
-			return eventA{}, nil
-		}
-		return noOp, nil
-	}
-}
-
-func feedback(r *Routine) {
-	for event := range r.next() {
-		r.send(event)
-	}
-}
-
-func TestStatefulRoutine(t *testing.T) {
-	var (
-		count      = 10
-		handler    = genStatefulHandler(count)
-		bufferSize = 20
-		routine    = newRoutine("statefulRoutine", handler, bufferSize)
-	)
-
-	go routine.start()
-	go feedback(routine)
-	<-routine.ready()
-
-	assert.True(t, routine.send(eventA{}),
-		"expected sending to a started routine to succeed")
-
-	final := <-routine.final()
-	if fnl, ok := final.(finalCount); ok {
-		assert.Equal(t, count, fnl.count,
-			"expected the routine to count to 10")
-	} else {
-		t.Fail()
-	}
-}
-
-type lowPriorityEvent struct {
-	priorityLow
-}
-
-type highPriorityEvent struct {
-	priorityHigh
-}
-
-func handleWithPriority(event Event) (Event, error) {
-	switch event.(type) {
-	case lowPriorityEvent:
-		return noOp, nil
-	case highPriorityEvent:
-		return noOp, errDone
-	}
-	return noOp, nil
-}
-
-func TestPriority(t *testing.T) {
-	var (
-		bufferSize = 20
-		routine    = newRoutine("priorityRoutine", handleWithPriority, bufferSize)
-	)
-
-	go routine.start()
-	<-routine.ready()
-	go func() {
-		for {
-			routine.send(lowPriorityEvent{})
-			time.Sleep(1 * time.Millisecond)
-		}
-	}()
-	time.Sleep(10 * time.Millisecond)
-
-	assert.True(t, routine.isRunning(),
-		"expected an started routine")
-	assert.True(t, routine.send(highPriorityEvent{}),
-		"expected send to succeed even when saturated")
-
-	assert.Equal(t, errDone, <-routine.final())
-	assert.False(t, routine.isRunning(),
-		"expected an started routine")
-}
--- a/internal/blocksync/v2/scheduler.go
+++ b/internal/blocksync/v2/scheduler.go
@@ -1,711 +0,0 @@
-package v2
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"math"
-	"sort"
-	"time"
-
-	"github.com/tendermint/tendermint/types"
-)
-
-// Events generated by the scheduler:
-// all blocks have been processed
-type scFinishedEv struct {
-	priorityNormal
-	reason string
-}
-
-func (e scFinishedEv) String() string {
-	return fmt.Sprintf("scFinishedEv{%v}", e.reason)
-}
-
-// send a blockRequest message
-type scBlockRequest struct {
-	priorityNormal
-	peerID types.NodeID
-	height int64
-}
-
-func (e scBlockRequest) String() string {
-	return fmt.Sprintf("scBlockRequest{%d from %v}", e.height, e.peerID)
-}
-
-// a block has been received and validated by the scheduler
-type scBlockReceived struct {
-	priorityNormal
-	peerID types.NodeID
-	block  *types.Block
-}
-
-func (e scBlockReceived) String() string {
-	return fmt.Sprintf("scBlockReceived{%d#%X from %v}", e.block.Height, e.block.Hash(), e.peerID)
-}
-
-// scheduler detected a peer error
-type scPeerError struct {
-	priorityHigh
-	peerID types.NodeID
-	reason error
-}
-
-func (e scPeerError) String() string {
-	return fmt.Sprintf("scPeerError{%v errored with %v}", e.peerID, e.reason)
-}
-
-// scheduler removed a set of peers (timed out or slow peer)
-type scPeersPruned struct {
-	priorityHigh
-	peers []types.NodeID
-}
-
-func (e scPeersPruned) String() string {
-	return fmt.Sprintf("scPeersPruned{%v}", e.peers)
-}
-
-// XXX: make this fatal?
-// scheduler encountered a fatal error
-type scSchedulerFail struct {
-	priorityHigh
-	reason error
-}
-
-func (e scSchedulerFail) String() string {
-	return fmt.Sprintf("scSchedulerFail{%v}", e.reason)
-}
-
-type blockState int
-
-const (
-	blockStateUnknown   blockState = iota + 1 // no known peer has this block
-	blockStateNew                             // indicates that a peer has reported having this block
-	blockStatePending                         // indicates that this block has been requested from a peer
-	blockStateReceived                        // indicates that this block has been received by a peer
-	blockStateProcessed                       // indicates that this block has been applied
-)
-
-func (e blockState) String() string {
-	switch e {
-	case blockStateUnknown:
-		return "Unknown"
-	case blockStateNew:
-		return "New"
-	case blockStatePending:
-		return "Pending"
-	case blockStateReceived:
-		return "Received"
-	case blockStateProcessed:
-		return "Processed"
-	default:
-		return fmt.Sprintf("invalid blockState: %d", e)
-	}
-}
-
-type peerState int
-
-const (
-	peerStateNew = iota + 1
-	peerStateReady
-	peerStateRemoved
-)
-
-func (e peerState) String() string {
-	switch e {
-	case peerStateNew:
-		return "New"
-	case peerStateReady:
-		return "Ready"
-	case peerStateRemoved:
-		return "Removed"
-	default:
-		panic(fmt.Sprintf("unknown peerState: %d", e))
-	}
-}
-
-type scPeer struct {
-	peerID types.NodeID
-
-	// initialized as New when peer is added, updated to Ready when statusUpdate is received,
-	// updated to Removed when peer is removed
-	state peerState
-
-	base        int64 // updated when statusResponse is received
-	height      int64 // updated when statusResponse is received
-	lastTouched time.Time
-	lastRate    int64 // last receive rate in bytes
-}
-
-func (p scPeer) String() string {
-	return fmt.Sprintf("{state %v, base %d, height %d, lastTouched %v, lastRate %d, id %v}",
-		p.state, p.base, p.height, p.lastTouched, p.lastRate, p.peerID)
-}
-
-func newScPeer(peerID types.NodeID) *scPeer {
-	return &scPeer{
-		peerID:      peerID,
-		state:       peerStateNew,
-		base:        -1,
-		height:      -1,
-		lastTouched: time.Time{},
-	}
-}
-
-// The scheduler keep track of the state of each block and each peer. The
-// scheduler will attempt to schedule new block requests with `trySchedule`
-// events and remove slow peers with `tryPrune` events.
-type scheduler struct {
-	initHeight int64
-
-	// next block that needs to be processed. All blocks with smaller height are
-	// in Processed state.
-	height int64
-
-	// lastAdvance tracks the last time a block execution happened.
-	// syncTimeout is the maximum time the scheduler waits to advance in the block sync process before finishing.
-	// This covers the cases where there are no peers or all peers have a lower height.
-	lastAdvance time.Time
-	syncTimeout time.Duration
-
-	// a map of peerID to scheduler specific peer struct `scPeer` used to keep
-	// track of peer specific state
-	peers       map[types.NodeID]*scPeer
-	peerTimeout time.Duration // maximum response time from a peer otherwise prune
-	minRecvRate int64         // minimum receive rate from peer otherwise prune
-
-	// the maximum number of blocks that should be New, Received or Pending at any point
-	// in time. This is used to enforce a limit on the blockStates map.
-	targetPending int
-	// a list of blocks to be scheduled (New), Pending or Received. Its length should be
-	// smaller than targetPending.
-	blockStates map[int64]blockState
-
-	// a map of heights to the peer we are waiting a response from
-	pendingBlocks map[int64]types.NodeID
-
-	// the time at which a block was put in blockStatePending
-	pendingTime map[int64]time.Time
-
-	// a map of heights to the peers that put the block in blockStateReceived
-	receivedBlocks map[int64]types.NodeID
-}
-
-func (sc scheduler) String() string {
-	return fmt.Sprintf("ih: %d, bst: %v, peers: %v, pblks: %v, ptm %v, rblks: %v",
-		sc.initHeight, sc.blockStates, sc.peers, sc.pendingBlocks, sc.pendingTime, sc.receivedBlocks)
-}
-
-func newScheduler(initHeight int64, startTime time.Time) *scheduler {
-	sc := scheduler{
-		initHeight:     initHeight,
-		lastAdvance:    startTime,
-		syncTimeout:    60 * time.Second,
-		height:         initHeight,
-		blockStates:    make(map[int64]blockState),
-		peers:          make(map[types.NodeID]*scPeer),
-		pendingBlocks:  make(map[int64]types.NodeID),
-		pendingTime:    make(map[int64]time.Time),
-		receivedBlocks: make(map[int64]types.NodeID),
-		targetPending:  10,               // TODO - pass as param
-		peerTimeout:    15 * time.Second, // TODO - pass as param
-		minRecvRate:    0,                // int64(7680), TODO - pass as param
-	}
-
-	return &sc
-}
-
-func (sc *scheduler) ensurePeer(peerID types.NodeID) *scPeer {
-	if _, ok := sc.peers[peerID]; !ok {
-		sc.peers[peerID] = newScPeer(peerID)
-	}
-	return sc.peers[peerID]
-}
-
-func (sc *scheduler) touchPeer(peerID types.NodeID, time time.Time) error {
-	peer, ok := sc.peers[peerID]
-	if !ok {
-		return fmt.Errorf("couldn't find peer %s", peerID)
-	}
-
-	if peer.state != peerStateReady {
-		return fmt.Errorf("tried to touch peer in state %s, must be Ready", peer.state)
-	}
-
-	peer.lastTouched = time
-
-	return nil
-}
-
-func (sc *scheduler) removePeer(peerID types.NodeID) {
-	peer, ok := sc.peers[peerID]
-	if !ok {
-		return
-	}
-	if peer.state == peerStateRemoved {
-		return
-	}
-
-	for height, pendingPeerID := range sc.pendingBlocks {
-		if pendingPeerID == peerID {
-			sc.setStateAtHeight(height, blockStateNew)
-			delete(sc.pendingTime, height)
-			delete(sc.pendingBlocks, height)
-		}
-	}
-
-	for height, rcvPeerID := range sc.receivedBlocks {
-		if rcvPeerID == peerID {
-			sc.setStateAtHeight(height, blockStateNew)
-			delete(sc.receivedBlocks, height)
-		}
-	}
-
-	// remove the blocks from blockStates if the peer removal causes the max peer height to be lower.
-	peer.state = peerStateRemoved
-	maxPeerHeight := int64(0)
-	for _, otherPeer := range sc.peers {
-		if otherPeer.state != peerStateReady {
-			continue
-		}
-		if otherPeer.peerID != peer.peerID && otherPeer.height > maxPeerHeight {
-			maxPeerHeight = otherPeer.height
-		}
-	}
-	for h := range sc.blockStates {
-		if h > maxPeerHeight {
-			delete(sc.blockStates, h)
-		}
-	}
-}
-
-// check if the blockPool is running low and add new blocks in New state to be requested.
-// This function is called when there is an increase in the maximum peer height or when
-// blocks are processed.
-func (sc *scheduler) addNewBlocks() {
-	if len(sc.blockStates) >= sc.targetPending {
-		return
-	}
-
-	for i := sc.height; i < int64(sc.targetPending)+sc.height; i++ {
-		if i > sc.maxHeight() {
-			break
-		}
-		if sc.getStateAtHeight(i) == blockStateUnknown {
-			sc.setStateAtHeight(i, blockStateNew)
-		}
-	}
-}
-
-func (sc *scheduler) setPeerRange(peerID types.NodeID, base int64, height int64) error {
-	peer := sc.ensurePeer(peerID)
-
-	if peer.state == peerStateRemoved {
-		return nil // noop
-	}
-
-	if height < peer.height {
-		sc.removePeer(peerID)
-		return fmt.Errorf("cannot move peer height lower. from %d to %d", peer.height, height)
-	}
-
-	if base > height {
-		sc.removePeer(peerID)
-		return fmt.Errorf("cannot set peer base higher than its height")
-	}
-
-	peer.base = base
-	peer.height = height
-	peer.state = peerStateReady
-
-	sc.addNewBlocks()
-	return nil
-}
-
-func (sc *scheduler) getStateAtHeight(height int64) blockState {
-	if height < sc.height {
-		return blockStateProcessed
-	} else if state, ok := sc.blockStates[height]; ok {
-		return state
-	} else {
-		return blockStateUnknown
-	}
-}
-
-func (sc *scheduler) getPeersWithHeight(height int64) []types.NodeID {
-	peers := make([]types.NodeID, 0)
-	for _, peer := range sc.peers {
-		if peer.state != peerStateReady {
-			continue
-		}
-		if peer.base <= height && peer.height >= height {
-			peers = append(peers, peer.peerID)
-		}
-	}
-	return peers
-}
-
-func (sc *scheduler) prunablePeers(peerTimout time.Duration, minRecvRate int64, now time.Time) []types.NodeID {
-	prunable := make([]types.NodeID, 0)
-	for peerID, peer := range sc.peers {
-		if peer.state != peerStateReady {
-			continue
-		}
-		if now.Sub(peer.lastTouched) > peerTimout || peer.lastRate < minRecvRate {
-			prunable = append(prunable, peerID)
-		}
-	}
-	// Tests for handleTryPrunePeer() may fail without sort due to range non-determinism
-	sort.Sort(PeerByID(prunable))
-	return prunable
-}
-
-func (sc *scheduler) setStateAtHeight(height int64, state blockState) {
-	sc.blockStates[height] = state
-}
-
-// CONTRACT: peer exists and in Ready state.
-func (sc *scheduler) markReceived(peerID types.NodeID, height int64, size int64, now time.Time) error {
-	peer := sc.peers[peerID]
-
-	if state := sc.getStateAtHeight(height); state != blockStatePending || sc.pendingBlocks[height] != peerID {
-		return fmt.Errorf("received block %d from peer %s without being requested", height, peerID)
-	}
-
-	pendingTime, ok := sc.pendingTime[height]
-	if !ok || now.Sub(pendingTime) <= 0 {
-		return fmt.Errorf("clock error: block %d received at %s but requested at %s",
-			height, pendingTime, now)
-	}
-
-	peer.lastRate = size / now.Sub(pendingTime).Nanoseconds()
-
-	sc.setStateAtHeight(height, blockStateReceived)
-	delete(sc.pendingBlocks, height)
-	delete(sc.pendingTime, height)
-
-	sc.receivedBlocks[height] = peerID
-
-	return nil
-}
-
-func (sc *scheduler) markPending(peerID types.NodeID, height int64, time time.Time) error {
-	state := sc.getStateAtHeight(height)
-	if state != blockStateNew {
-		return fmt.Errorf("block %d should be in blockStateNew but is %s", height, state)
-	}
-
-	peer, ok := sc.peers[peerID]
-	if !ok {
-		return fmt.Errorf("cannot find peer %s", peerID)
-	}
-
-	if peer.state != peerStateReady {
-		return fmt.Errorf("cannot schedule %d from %s in %s", height, peerID, peer.state)
-	}
-
-	if height > peer.height {
-		return fmt.Errorf("cannot request height %d from peer %s that is at height %d",
-			height, peerID, peer.height)
-	}
-
-	if height < peer.base {
-		return fmt.Errorf("cannot request height %d for peer %s with base %d",
-			height, peerID, peer.base)
-	}
-
-	sc.setStateAtHeight(height, blockStatePending)
-	sc.pendingBlocks[height] = peerID
-	sc.pendingTime[height] = time
-
-	return nil
-}
-
-func (sc *scheduler) markProcessed(height int64) error {
-	// It is possible that a peer error or timeout is handled after the processor
-	// has processed the block but before the scheduler received this event, so
-	// when pcBlockProcessed event is received, the block had been requested
-	// again => don't check the block state.
-	sc.lastAdvance = time.Now()
-	sc.height = height + 1
-	delete(sc.pendingBlocks, height)
-	delete(sc.pendingTime, height)
-	delete(sc.receivedBlocks, height)
-	delete(sc.blockStates, height)
-	sc.addNewBlocks()
-	return nil
-}
-
-func (sc *scheduler) allBlocksProcessed() bool {
-	if len(sc.peers) == 0 {
-		return false
-	}
-	return sc.height >= sc.maxHeight()
-}
-
-// returns max peer height or the last processed block, i.e. sc.height
-func (sc *scheduler) maxHeight() int64 {
-	max := sc.height - 1
-	for _, peer := range sc.peers {
-		if peer.state != peerStateReady {
-			continue
-		}
-		if max < peer.height {
-			max = peer.height
-		}
-	}
-	return max
-}
-
-// lowest block in sc.blockStates with state == blockStateNew or -1 if no new blocks
-func (sc *scheduler) nextHeightToSchedule() int64 {
-	var min int64 = math.MaxInt64
-	for height, state := range sc.blockStates {
-		if state == blockStateNew && height < min {
-			min = height
-		}
-	}
-	if min == math.MaxInt64 {
-		min = -1
-	}
-	return min
-}
-
-func (sc *scheduler) pendingFrom(peerID types.NodeID) []int64 {
-	var heights []int64
-	for height, pendingPeerID := range sc.pendingBlocks {
-		if pendingPeerID == peerID {
-			heights = append(heights, height)
-		}
-	}
-	return heights
-}
-
-func (sc *scheduler) selectPeer(height int64) (types.NodeID, error) {
-	peers := sc.getPeersWithHeight(height)
-	if len(peers) == 0 {
-		return "", fmt.Errorf("cannot find peer for height %d", height)
-	}
-
-	// create a map from number of pending requests to a list
-	// of peers having that number of pending requests.
-	pendingFrom := make(map[int][]types.NodeID)
-	for _, peerID := range peers {
-		numPending := len(sc.pendingFrom(peerID))
-		pendingFrom[numPending] = append(pendingFrom[numPending], peerID)
-	}
-
-	// find the set of peers with minimum number of pending requests.
-	var minPending int64 = math.MaxInt64
-	for mp := range pendingFrom {
-		if int64(mp) < minPending {
-			minPending = int64(mp)
-		}
-	}
-
-	sort.Sort(PeerByID(pendingFrom[int(minPending)]))
-	return pendingFrom[int(minPending)][0], nil
-}
-
-// PeerByID is a list of peers sorted by peerID.
-type PeerByID []types.NodeID
-
-func (peers PeerByID) Len() int {
-	return len(peers)
-}
-func (peers PeerByID) Less(i, j int) bool {
-	return bytes.Compare([]byte(peers[i]), []byte(peers[j])) == -1
-}
-
-func (peers PeerByID) Swap(i, j int) {
-	peers[i], peers[j] = peers[j], peers[i]
-}
-
-// Handlers
-
-// This handler gets the block, performs some validation and then passes it on to the processor.
-func (sc *scheduler) handleBlockResponse(event bcBlockResponse) (Event, error) {
-	err := sc.touchPeer(event.peerID, event.time)
-	if err != nil {
-		// peer does not exist OR not ready
-		return noOp, nil
-	}
-
-	err = sc.markReceived(event.peerID, event.block.Height, event.size, event.time)
-	if err != nil {
-		sc.removePeer(event.peerID)
-		return scPeerError{peerID: event.peerID, reason: err}, nil
-	}
-
-	return scBlockReceived{peerID: event.peerID, block: event.block}, nil
-}
-
-func (sc *scheduler) handleNoBlockResponse(event bcNoBlockResponse) (Event, error) {
-	// No such peer or peer was removed.
-	peer, ok := sc.peers[event.peerID]
-	if !ok || peer.state == peerStateRemoved {
-		return noOp, nil
-	}
-
-	// The peer may have been just removed due to errors, low speed or timeouts.
-	sc.removePeer(event.peerID)
-
-	return scPeerError{peerID: event.peerID,
-		reason: fmt.Errorf("peer %v with base %d height %d claims no block for %d",
-			event.peerID, peer.base, peer.height, event.height)}, nil
-}
-
-func (sc *scheduler) handleBlockProcessed(event pcBlockProcessed) (Event, error) {
-	if event.height != sc.height {
-		panic(fmt.Sprintf("processed height %d, but expected height %d", event.height, sc.height))
-	}
-
-	err := sc.markProcessed(event.height)
-	if err != nil {
-		return scSchedulerFail{reason: err}, nil
-	}
-
-	if sc.allBlocksProcessed() {
-		return scFinishedEv{reason: "processed all blocks"}, nil
-	}
-
-	return noOp, nil
-}
-
-// Handles an error from the processor. The processor had already cleaned the blocks from
-// the peers included in this event. Just attempt to remove the peers.
-func (sc *scheduler) handleBlockProcessError(event pcBlockVerificationFailure) (Event, error) {
-	// The peers may have been just removed due to errors, low speed or timeouts.
-	sc.removePeer(event.firstPeerID)
-	if event.firstPeerID != event.secondPeerID {
-		sc.removePeer(event.secondPeerID)
-	}
-
-	if sc.allBlocksProcessed() {
-		return scFinishedEv{reason: "error on last block"}, nil
-	}
-
-	return noOp, nil
-}
-
-func (sc *scheduler) handleAddNewPeer(event bcAddNewPeer) (Event, error) {
-	sc.ensurePeer(event.peerID)
-	return noOp, nil
-}
-
-func (sc *scheduler) handleRemovePeer(event bcRemovePeer) (Event, error) {
-	sc.removePeer(event.peerID)
-
-	if sc.allBlocksProcessed() {
-		return scFinishedEv{reason: "removed peer"}, nil
-	}
-
-	// Return scPeerError so the peer (and all associated blocks) is removed from
-	// the processor.
-	return scPeerError{peerID: event.peerID, reason: errors.New("peer was stopped")}, nil
-}
-
-func (sc *scheduler) handleTryPrunePeer(event rTryPrunePeer) (Event, error) {
-	// Check behavior of peer responsible to deliver block at sc.height.
-	timeHeightAsked, ok := sc.pendingTime[sc.height]
-	if ok && time.Since(timeHeightAsked) > sc.peerTimeout {
-		// A request was sent to a peer for block at sc.height but a response was not received
-		// from that peer within sc.peerTimeout. Remove the peer. This is to ensure that a peer
-		// will be timed out even if it sends blocks at higher heights but prevents progress by
-		// not sending the block at current height.
-		sc.removePeer(sc.pendingBlocks[sc.height])
-	}
-
-	prunablePeers := sc.prunablePeers(sc.peerTimeout, sc.minRecvRate, event.time)
-	if len(prunablePeers) == 0 {
-		return noOp, nil
-	}
-	for _, peerID := range prunablePeers {
-		sc.removePeer(peerID)
-	}
-
-	// If all blocks are processed we should finish.
-	if sc.allBlocksProcessed() {
-		return scFinishedEv{reason: "after try prune"}, nil
-	}
-
-	return scPeersPruned{peers: prunablePeers}, nil
-}
-
-func (sc *scheduler) handleResetState(event bcResetState) (Event, error) {
-	initHeight := event.state.LastBlockHeight + 1
-	if initHeight == 1 {
-		initHeight = event.state.InitialHeight
-	}
-	sc.initHeight = initHeight
-	sc.height = initHeight
-	sc.lastAdvance = time.Now()
-	sc.addNewBlocks()
-	return noOp, nil
-}
-
-func (sc *scheduler) handleTrySchedule(event rTrySchedule) (Event, error) {
-	if time.Since(sc.lastAdvance) > sc.syncTimeout {
-		return scFinishedEv{reason: "timeout, no advance"}, nil
-	}
-
-	nextHeight := sc.nextHeightToSchedule()
-	if nextHeight == -1 {
-		return noOp, nil
-	}
-
-	bestPeerID, err := sc.selectPeer(nextHeight)
-	if err != nil {
-		return scSchedulerFail{reason: err}, nil
-	}
-	if err := sc.markPending(bestPeerID, nextHeight, event.time); err != nil {
-		return scSchedulerFail{reason: err}, nil // XXX: peerError might be more appropriate
-	}
-	return scBlockRequest{peerID: bestPeerID, height: nextHeight}, nil
-
-}
-
-func (sc *scheduler) handleStatusResponse(event bcStatusResponse) (Event, error) {
-	err := sc.setPeerRange(event.peerID, event.base, event.height)
-	if err != nil {
-		return scPeerError{peerID: event.peerID, reason: err}, nil
-	}
-	return noOp, nil
-}
-
-func (sc *scheduler) handle(event Event) (Event, error) {
-	switch event := event.(type) {
-	case bcResetState:
-		nextEvent, err := sc.handleResetState(event)
-		return nextEvent, err
-	case bcStatusResponse:
-		nextEvent, err := sc.handleStatusResponse(event)
-		return nextEvent, err
-	case bcBlockResponse:
-		nextEvent, err := sc.handleBlockResponse(event)
-		return nextEvent, err
-	case bcNoBlockResponse:
-		nextEvent, err := sc.handleNoBlockResponse(event)
-		return nextEvent, err
-	case rTrySchedule:
-		nextEvent, err := sc.handleTrySchedule(event)
-		return nextEvent, err
-	case bcAddNewPeer:
-		nextEvent, err := sc.handleAddNewPeer(event)
-		return nextEvent, err
-	case bcRemovePeer:
-		nextEvent, err := sc.handleRemovePeer(event)
-		return nextEvent, err
-	case rTryPrunePeer:
-		nextEvent, err := sc.handleTryPrunePeer(event)
-		return nextEvent, err
-	case pcBlockProcessed:
-		nextEvent, err := sc.handleBlockProcessed(event)
-		return nextEvent, err
-	case pcBlockVerificationFailure:
-		nextEvent, err := sc.handleBlockProcessError(event)
-		return nextEvent, err
-	default:
-		return scSchedulerFail{reason: fmt.Errorf("unknown event %v", event)}, nil
-	}
-}
--- a/internal/blocksync/v2/scheduler_test.go
+++ b/internal/blocksync/v2/scheduler_test.go
--- a/internal/blocksync/v2/types.go
+++ b/internal/blocksync/v2/types.go
@@ -1,65 +0,0 @@
-package v2
-
-import (
-	"github.com/Workiva/go-datastructures/queue"
-)
-
-// Event is the type that can be added to the priority queue.
-type Event queue.Item
-
-type priority interface {
-	Compare(other queue.Item) int
-	Priority() int
-}
-
-type priorityLow struct{}
-type priorityNormal struct{}
-type priorityHigh struct{}
-
-func (p priorityLow) Priority() int {
-	return 1
-}
-
-func (p priorityNormal) Priority() int {
-	return 2
-}
-
-func (p priorityHigh) Priority() int {
-	return 3
-}
-
-func (p priorityLow) Compare(other queue.Item) int {
-	op := other.(priority)
-	if p.Priority() > op.Priority() {
-		return 1
-	} else if p.Priority() == op.Priority() {
-		return 0
-	}
-	return -1
-}
-
-func (p priorityNormal) Compare(other queue.Item) int {
-	op := other.(priority)
-	if p.Priority() > op.Priority() {
-		return 1
-	} else if p.Priority() == op.Priority() {
-		return 0
-	}
-	return -1
-}
-
-func (p priorityHigh) Compare(other queue.Item) int {
-	op := other.(priority)
-	if p.Priority() > op.Priority() {
-		return 1
-	} else if p.Priority() == op.Priority() {
-		return 0
-	}
-	return -1
-}
-
-type noOpEvent struct {
-	priorityLow
-}
-
-var noOp = noOpEvent{}
--- a/internal/consensus/byzantine_test.go
+++ b/internal/consensus/byzantine_test.go
@@ -10,20 +10,21 @@ import (

 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-	abcicli "github.com/tendermint/tendermint/abci/client"
+	dbm "github.com/tendermint/tm-db"
+
+	abciclient "github.com/tendermint/tendermint/abci/client"
 	abci "github.com/tendermint/tendermint/abci/types"
 	"github.com/tendermint/tendermint/internal/evidence"
 	tmsync "github.com/tendermint/tendermint/internal/libs/sync"
 	mempoolv0 "github.com/tendermint/tendermint/internal/mempool/v0"
 	"github.com/tendermint/tendermint/internal/p2p"
+	sm "github.com/tendermint/tendermint/internal/state"
+	"github.com/tendermint/tendermint/internal/store"
 	"github.com/tendermint/tendermint/internal/test/factory"
 	"github.com/tendermint/tendermint/libs/log"
 	tmcons "github.com/tendermint/tendermint/proto/tendermint/consensus"
 	tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
-	sm "github.com/tendermint/tendermint/state"
-	"github.com/tendermint/tendermint/store"
 	"github.com/tendermint/tendermint/types"
-	dbm "github.com/tendermint/tm-db"
 )

 // Byzantine node sends two different prevotes (nil and blockID) to the same
@@ -61,9 +62,9 @@ func TestByzantinePrevoteEquivocation(t *testing.T) {
 			blockStore := store.NewBlockStore(blockDB)

 			// one for mempool, one for consensus
-			mtx := new(tmsync.RWMutex)
-			proxyAppConnMem := abcicli.NewLocalClient(mtx, app)
-			proxyAppConnCon := abcicli.NewLocalClient(mtx, app)
+			mtx := new(tmsync.Mutex)
+			proxyAppConnMem := abciclient.NewLocalClient(mtx, app)
+			proxyAppConnCon := abciclient.NewLocalClient(mtx, app)

 			// Make Mempool
 			mempool := mempoolv0.NewCListMempool(thisConfig.Mempool, proxyAppConnMem, 0)
--- a/Show More
+++ b/Show More