fix up a few things

lint
fix lints
2026-01-15 01:02:50 +00:00 · 2022-11-09 15:17:43 +01:00 · 2022-11-09 13:51:33 +01:00 · 2022-11-01 14:18:13 +01:00 · 2022-11-01 11:58:53 +01:00 · 2022-11-01 11:26:46 +01:00
98 changed files with 3193 additions and 3522 deletions
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -53,10 +53,10 @@ updates:
  - package-ecosystem: gomod
    directory: "/"
    schedule:
-      interval: weekly
+      interval: daily
    target-branch: "v0.37.x"
-    # Only allow automated security-related dependency updates until we cut the
-    # final v0.37.0 release.
+    # Only allow automated security-related dependency updates on release
+    # branches.
    open-pull-requests-limit: 0
    labels:
      - T:dependencies
@@ -65,9 +65,11 @@ updates:
  - package-ecosystem: gomod
    directory: "/"
    schedule:
-      interval: weekly
+      interval: daily
    target-branch: "v0.34.x"
-    open-pull-requests-limit: 10
+    # Only allow automated security-related dependency updates on release
+    # branches.
+    open-pull-requests-limit: 0
    labels:
      - T:dependencies
      - S:automerge
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -41,7 +41,7 @@ jobs:
          platforms: all

      - name: Set up Docker Build
-        uses: docker/setup-buildx-action@v2.1.0
+        uses: docker/setup-buildx-action@v2.2.1

      - name: Login to DockerHub
        if: ${{ github.event_name != 'pull_request' }}
--- a/.github/workflows/gosec.yml
+++ b/.github/workflows/gosec.yml
@@ -1,41 +0,0 @@
-name: Run Gosec
-on:
-  pull_request:
-    paths:
-      - '**/*.go'
-      - 'go.mod'
-      - 'go.sum'
-  push:
-    branches:
-      - main
-      - 'feature/*'
-      - 'v0.37.x'
-      - 'v0.34.x'
-    paths:
-      - '**/*.go'
-      - 'go.mod'
-      - 'go.sum'
-
-jobs:
-  Gosec:
-    permissions:
-      security-events: write
-
-    runs-on: ubuntu-latest
-    env:
-      GO111MODULE: on
-    steps:
-      - name: Checkout Source
-        uses: actions/checkout@v3
-
-      - name: Run Gosec Security Scanner
-        uses: cosmos/gosec@master
-        with:
-          # Let the report trigger a failure with the Github Security scanner features.
-          args: "-no-fail -fmt sarif -out results.sarif ./..."
-
-      - name: Upload SARIF file
-        uses: github/codeql-action/upload-sarif@v2
-        with:
-          # Path to SARIF file relative to the root of the repository
-          sarif_file: results.sarif
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -31,10 +31,7 @@ jobs:
            go.sum
      - uses: golangci/golangci-lint-action@v3
        with:
-          # Required: the version of golangci-lint is required and
-          # must be specified without patch version: we always use the
-          # latest patch version.
-          version: v1.47.3
+          version: v1.50.1
          args: --timeout 10m
          github-token: ${{ secrets.github_token }}
        if: env.GIT_DIFF
--- a/.github/workflows/markdown-links.yml
+++ b/.github/workflows/markdown-links.yml
@@ -1,23 +1,20 @@
 name: Check Markdown links

 on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches: [main]
+  schedule:
+    # 2am UTC daily
+    - cron: '0 2 * * *'

 jobs:
  markdown-link-check:
+    strategy:
+      matrix:
+        branch: ['main', 'v0.37.x', 'v0.34.x']
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
-      - uses: technote-space/get-diff-action@v6
        with:
-          PATTERNS: |
-            **/**.md
-      - uses: creachadair/github-action-markdown-link-check@master
+          ref: ${{ matrix.branch }}
+      - uses: informalsystems/github-action-markdown-link-check@main
        with:
-          check-modified-files-only: 'yes'
          config-file: '.md-link-check.json'
-        if: env.GIT_DIFF
--- a/.github/workflows/pre-release.yml
+++ b/.github/workflows/pre-release.yml
@@ -8,7 +8,7 @@ on:
      - "v[0-9]+.[0-9]+.[0-9]+-rc[0-9]+"      # e.g. v0.37.0-rc1, v0.38.0-rc10

 jobs:
-  goreleaser:
+  prerelease:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
@@ -38,3 +38,28 @@ jobs:
          args: release --rm-dist --release-notes=../release_notes.md
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  prerelease-success:
+    needs: prerelease
+    if: ${{ success() }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Notify Slack upon pre-release
+        uses: slackapi/slack-github-action@v1.22.0
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
+          SLACK_WEBHOOK_TYPE: INCOMING_WEBHOOK
+          RELEASE_URL: "${{ github.server_url }}/${{ github.repository }}/releases/tag/${{ github.ref_name }}"
+        with:
+          payload: |
+            {
+              "blocks": [
+                {
+                  "type": "section",
+                  "text": {
+                    "type": "mrkdwn",
+                    "text": ":sparkles: New Tendermint pre-release: <${{ env.RELEASE_URL }}|${{ github.ref_name }}>"
+                  }
+                }
+              ]
+            }
--- a/.github/workflows/proto-lint.yml
+++ b/.github/workflows/proto-lint.yml
@@ -15,7 +15,7 @@ jobs:
    timeout-minutes: 5
    steps:
      - uses: actions/checkout@v3
-      - uses: bufbuild/buf-setup-action@v1.8.0
+      - uses: bufbuild/buf-setup-action@v1.9.0
      - uses: bufbuild/buf-lint-action@v1
        with:
          input: 'proto'
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -6,7 +6,7 @@ on:
      - "v[0-9]+.[0-9]+.[0-9]+"  # Push events to matching v*, i.e. v1.0, v20.15.10

 jobs:
-  goreleaser:
+  release:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
@@ -35,3 +35,28 @@ jobs:
          args: release --rm-dist --release-notes=../release_notes.md
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  release-success:
+    needs: release
+    if: ${{ success() }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Notify Slack upon release
+        uses: slackapi/slack-github-action@v1.22.0
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
+          SLACK_WEBHOOK_TYPE: INCOMING_WEBHOOK
+          RELEASE_URL: "${{ github.server_url }}/${{ github.repository }}/releases/tag/${{ github.ref_name }}"
+        with:
+          payload: |
+            {
+              "blocks": [
+                {
+                  "type": "section",
+                  "text": {
+                    "type": "mrkdwn",
+                    "text": ":rocket: New Tendermint release: <${{ env.RELEASE_URL }}|${{ github.ref_name }}>"
+                  }
+                }
+              ]
+            }
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -2,7 +2,6 @@ linters:
  enable:
    - asciicheck
    - bodyclose
-    - deadcode
    - depguard
    - dogsled
    - dupl
@@ -26,7 +25,6 @@ linters:
    - typecheck
    - unconvert
    - unused
-    - varcheck

 issues:
  exclude-rules:
--- a/.md-link-check.json
+++ b/.md-link-check.json
@@ -2,5 +2,16 @@
    "retryOn429": true,
    "retryCount": 5,
    "fallbackRetryDelay": "30s",
-    "aliveStatusCodes": [200, 206, 503]
+    "aliveStatusCodes": [200, 206, 503],
+    "httpHeaders": [
+        {
+            "urls": [
+                "https://docs.github.com/",
+                "https://help.github.com/"
+            ],
+            "headers": {
+                "Accept-Encoding": "zstd, br, gzip, deflate"
+            }
+        }
+    ]
 }
--- a/CHANGELOG_PENDING.md
+++ b/CHANGELOG_PENDING.md
@@ -11,6 +11,7 @@
 - P2P Protocol

 - Go API
+  - [p2p] \#9625 Remove unused p2p/trust package (@cmwaters)

 - Blockchain Protocol

--- a/2
+++ b/2
@@ -271,7 +271,7 @@ format:

 lint:
 	@echo "--> Running linter"
-	@golangci-lint run
+	@go run github.com/golangci/golangci-lint/cmd/golangci-lint run
 .PHONY: lint

 DESTINATION = ./index.html.md
--- a/blocksync/metrics.gen.go
+++ b/blocksync/metrics.gen.go
@@ -0,0 +1,30 @@
+// Code generated by metricsgen. DO NOT EDIT.
+
+package blocksync
+
+import (
+	"github.com/go-kit/kit/metrics/discard"
+	prometheus "github.com/go-kit/kit/metrics/prometheus"
+	stdprometheus "github.com/prometheus/client_golang/prometheus"
+)
+
+func PrometheusMetrics(namespace string, labelsAndValues ...string) *Metrics {
+	labels := []string{}
+	for i := 0; i < len(labelsAndValues); i += 2 {
+		labels = append(labels, labelsAndValues[i])
+	}
+	return &Metrics{
+		Syncing: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
+			Namespace: namespace,
+			Subsystem: MetricsSubsystem,
+			Name:      "syncing",
+			Help:      "Whether or not a node is block syncing. 1 if yes, 0 if no.",
+		}, labels).With(labelsAndValues...),
+	}
+}
+
+func NopMetrics() *Metrics {
+	return &Metrics{
+		Syncing: discard.NewGauge(),
+	}
+}
--- a/blocksync/metrics.go
+++ b/blocksync/metrics.go
@@ -0,0 +1,19 @@
+package blocksync
+
+import (
+	"github.com/go-kit/kit/metrics"
+)
+
+const (
+	// MetricsSubsystem is a subsystem shared by all metrics exposed by this
+	// package.
+	MetricsSubsystem = "blocksync"
+)
+
+//go:generate go run ../scripts/metricsgen -struct=Metrics
+
+// Metrics contains metrics exposed by this package.
+type Metrics struct {
+	// Whether or not a node is block syncing. 1 if yes, 0 if no.
+	Syncing metrics.Gauge
+}
--- a/blocksync/msgs.go
+++ b/blocksync/msgs.go
@@ -19,58 +19,6 @@ const (
 		BlockResponseMessageFieldKeySize
 )

-// EncodeMsg encodes a Protobuf message
-func EncodeMsg(pb proto.Message) ([]byte, error) {
-	msg := bcproto.Message{}
-
-	switch pb := pb.(type) {
-	case *bcproto.BlockRequest:
-		msg.Sum = &bcproto.Message_BlockRequest{BlockRequest: pb}
-	case *bcproto.BlockResponse:
-		msg.Sum = &bcproto.Message_BlockResponse{BlockResponse: pb}
-	case *bcproto.NoBlockResponse:
-		msg.Sum = &bcproto.Message_NoBlockResponse{NoBlockResponse: pb}
-	case *bcproto.StatusRequest:
-		msg.Sum = &bcproto.Message_StatusRequest{StatusRequest: pb}
-	case *bcproto.StatusResponse:
-		msg.Sum = &bcproto.Message_StatusResponse{StatusResponse: pb}
-	default:
-		return nil, fmt.Errorf("unknown message type %T", pb)
-	}
-
-	bz, err := proto.Marshal(&msg)
-	if err != nil {
-		return nil, fmt.Errorf("unable to marshal %T: %w", pb, err)
-	}
-
-	return bz, nil
-}
-
-// DecodeMsg decodes a Protobuf message.
-func DecodeMsg(bz []byte) (proto.Message, error) {
-	pb := &bcproto.Message{}
-
-	err := proto.Unmarshal(bz, pb)
-	if err != nil {
-		return nil, err
-	}
-
-	switch msg := pb.Sum.(type) {
-	case *bcproto.Message_BlockRequest:
-		return msg.BlockRequest, nil
-	case *bcproto.Message_BlockResponse:
-		return msg.BlockResponse, nil
-	case *bcproto.Message_NoBlockResponse:
-		return msg.NoBlockResponse, nil
-	case *bcproto.Message_StatusRequest:
-		return msg.StatusRequest, nil
-	case *bcproto.Message_StatusResponse:
-		return msg.StatusResponse, nil
-	default:
-		return nil, fmt.Errorf("unknown message type %T", msg)
-	}
-}
-
 // ValidateMsg validates a message.
 func ValidateMsg(pb proto.Message) error {
 	if pb == nil {
--- a/blocksync/pool.go
+++ b/blocksync/pool.go
@@ -99,6 +99,9 @@ func NewBlockPool(start int64, requestsCh chan<- BlockRequest, errorsCh chan<- p
 // OnStart implements service.Service by spawning requesters routine and recording
 // pool's start time.
 func (pool *BlockPool) OnStart() error {
+	if pool.height == 0 {
+		return errors.New("height not set")
+	}
 	go pool.makeRequestersRoutine()
 	pool.startTime = time.Now()
 	return nil
@@ -111,22 +114,19 @@ func (pool *BlockPool) makeRequestersRoutine() {
 			break
 		}

-		_, numPending, lenRequesters := pool.GetStatus()
-		switch {
-		case numPending >= maxPendingRequests:
+		height, maxPeerHeight, numPending, lenRequesters := pool.GetStatus()
+		if height >= maxPeerHeight ||
+			numPending >= maxPendingRequests ||
+			lenRequesters >= maxTotalRequesters {
 			// sleep for a bit.
 			time.Sleep(requestIntervalMS * time.Millisecond)
 			// check for timed out peers
 			pool.removeTimedoutPeers()
-		case lenRequesters >= maxTotalRequesters:
-			// sleep for a bit.
-			time.Sleep(requestIntervalMS * time.Millisecond)
-			// check for timed out peers
-			pool.removeTimedoutPeers()
-		default:
-			// request for more blocks.
-			pool.makeNextRequester()
+			continue
 		}
+
+		// request for more blocks.
+		pool.makeNextRequester()
 	}
 }

@@ -156,11 +156,11 @@ func (pool *BlockPool) removeTimedoutPeers() {

 // GetStatus returns pool's height, numPending requests and the number of
 // requesters.
-func (pool *BlockPool) GetStatus() (height int64, numPending int32, lenRequesters int) {
+func (pool *BlockPool) GetStatus() (height, maxPeerHeight int64, numPending int32, lenRequesters int) {
 	pool.mtx.Lock()
 	defer pool.mtx.Unlock()

-	return pool.height, atomic.LoadInt32(&pool.numPending), len(pool.requesters)
+	return pool.height, pool.maxPeerHeight, atomic.LoadInt32(&pool.numPending), len(pool.requesters)
 }

 // IsCaughtUp returns true if this node is caught up, false - otherwise.
@@ -302,6 +302,7 @@ func (pool *BlockPool) SetPeerRange(peerID p2p.ID, base int64, height int64) {
 	}

 	if height > pool.maxPeerHeight {
+		pool.Logger.Info("new max peer height", "height", height)
 		pool.maxPeerHeight = height
 	}
 }
@@ -388,7 +389,7 @@ func (pool *BlockPool) makeNextRequester() {

 	err := request.Start()
 	if err != nil {
-		request.Logger.Error("Error starting request", "err", err)
+		pool.Logger.Error("Error starting request", "err", err)
 	}
 }

--- a/blocksync/reactor.go
+++ b/blocksync/reactor.go
@@ -32,7 +32,7 @@ const (
 type consensusReactor interface {
 	// for when we switch from blocksync reactor and block sync to
 	// the consensus machine
-	SwitchToConsensus(state sm.State, skipWAL bool)
+	SwitchToConsensus(state sm.State, skipWAL bool) error
 }

 type peerError struct {
@@ -54,16 +54,15 @@ type Reactor struct {
 	blockExec *sm.BlockExecutor
 	store     *store.BlockStore
 	pool      *BlockPool
-	blockSync bool

 	requestsCh <-chan BlockRequest
 	errorsCh   <-chan peerError
+
+	metrics *Metrics
 }

 // NewReactor returns new reactor instance.
-func NewReactor(state sm.State, blockExec *sm.BlockExecutor, store *store.BlockStore,
-	blockSync bool) *Reactor {
-
+func NewReactor(state sm.State, blockExec *sm.BlockExecutor, store *store.BlockStore, metrics *Metrics) *Reactor {
 	if state.LastBlockHeight != store.Height() {
 		panic(fmt.Sprintf("state (%v) and store (%v) height mismatch", state.LastBlockHeight,
 			store.Height()))
@@ -85,9 +84,9 @@ func NewReactor(state sm.State, blockExec *sm.BlockExecutor, store *store.BlockS
 		blockExec:    blockExec,
 		store:        store,
 		pool:         pool,
-		blockSync:    blockSync,
 		requestsCh:   requestsCh,
 		errorsCh:     errorsCh,
+		metrics:      metrics,
 	}
 	bcR.BaseReactor = *p2p.NewBaseReactor("Reactor", bcR)
 	return bcR
@@ -101,22 +100,22 @@ func (bcR *Reactor) SetLogger(l log.Logger) {

 // OnStart implements service.Service.
 func (bcR *Reactor) OnStart() error {
-	if bcR.blockSync {
-		err := bcR.pool.Start()
-		if err != nil {
-			return err
-		}
-		go bcR.poolRoutine(false)
-	}
 	return nil
 }

+// IsSyncing returns whether the node is using blocksync to advance heights
+func (bcR *Reactor) IsSyncing() bool {
+	return bcR.pool.IsRunning()
+}
+
 // SwitchToBlockSync is called by the state sync reactor when switching to block sync.
 func (bcR *Reactor) SwitchToBlockSync(state sm.State) error {
-	bcR.blockSync = true
 	bcR.initialState = state
-
-	bcR.pool.height = state.LastBlockHeight + 1
+	if state.LastBlockHeight == 0 {
+		bcR.pool.height = state.InitialHeight
+	} else {
+		bcR.pool.height = state.LastBlockHeight + 1
+	}
 	err := bcR.pool.Start()
 	if err != nil {
 		return err
@@ -127,7 +126,7 @@ func (bcR *Reactor) SwitchToBlockSync(state sm.State) error {

 // OnStop implements service.Service.
 func (bcR *Reactor) OnStop() {
-	if bcR.blockSync {
+	if bcR.pool.IsRunning() {
 		if err := bcR.pool.Stop(); err != nil {
 			bcR.Logger.Error("Error stopping pool", "err", err)
 		}
@@ -143,21 +142,20 @@ func (bcR *Reactor) GetChannels() []*p2p.ChannelDescriptor {
 			SendQueueCapacity:   1000,
 			RecvBufferCapacity:  50 * 4096,
 			RecvMessageCapacity: MaxMsgSize,
+			MessageType:         &bcproto.Message{},
 		},
 	}
 }

 // AddPeer implements Reactor by sending our state to peer.
 func (bcR *Reactor) AddPeer(peer p2p.Peer) {
-	msgBytes, err := EncodeMsg(&bcproto.StatusResponse{
-		Base:   bcR.store.Base(),
-		Height: bcR.store.Height()})
-	if err != nil {
-		bcR.Logger.Error("could not convert msg to protobuf", "err", err)
-		return
-	}
-
-	peer.Send(BlocksyncChannel, msgBytes)
+	peer.Send(p2p.Envelope{
+		ChannelID: BlocksyncChannel,
+		Message: &bcproto.StatusResponse{
+			Base:   bcR.store.Base(),
+			Height: bcR.store.Height(),
+		},
+	})
 	// it's OK if send fails. will try later in poolRoutine

 	// peer is added to the pool once we receive the first
@@ -182,69 +180,53 @@ func (bcR *Reactor) respondToPeer(msg *bcproto.BlockRequest,
 			return false
 		}

-		msgBytes, err := EncodeMsg(&bcproto.BlockResponse{Block: bl})
-		if err != nil {
-			bcR.Logger.Error("could not marshal msg", "err", err)
-			return false
-		}
-
-		return src.TrySend(BlocksyncChannel, msgBytes)
+		return src.TrySend(p2p.Envelope{
+			ChannelID: BlocksyncChannel,
+			Message:   &bcproto.BlockResponse{Block: bl},
+		})
 	}

 	bcR.Logger.Info("Peer asking for a block we don't have", "src", src, "height", msg.Height)
-
-	msgBytes, err := EncodeMsg(&bcproto.NoBlockResponse{Height: msg.Height})
-	if err != nil {
-		bcR.Logger.Error("could not convert msg to protobuf", "err", err)
-		return false
-	}
-
-	return src.TrySend(BlocksyncChannel, msgBytes)
+	return src.TrySend(p2p.Envelope{
+		ChannelID: BlocksyncChannel,
+		Message:   &bcproto.NoBlockResponse{Height: msg.Height},
+	})
 }

 // Receive implements Reactor by handling 4 types of messages (look below).
-func (bcR *Reactor) Receive(chID byte, src p2p.Peer, msgBytes []byte) {
-	msg, err := DecodeMsg(msgBytes)
-	if err != nil {
-		bcR.Logger.Error("Error decoding message", "src", src, "chId", chID, "err", err)
-		bcR.Switch.StopPeerForError(src, err)
+func (bcR *Reactor) Receive(e p2p.Envelope) {
+	if err := ValidateMsg(e.Message); err != nil {
+		bcR.Logger.Error("Peer sent us invalid msg", "peer", e.Src, "msg", e.Message, "err", err)
+		bcR.Switch.StopPeerForError(e.Src, err)
 		return
 	}

-	if err = ValidateMsg(msg); err != nil {
-		bcR.Logger.Error("Peer sent us invalid msg", "peer", src, "msg", msg, "err", err)
-		bcR.Switch.StopPeerForError(src, err)
-		return
-	}
+	bcR.Logger.Debug("Receive", "e.Src", e.Src, "chID", e.ChannelID, "msg", e.Message)

-	bcR.Logger.Debug("Receive", "src", src, "chID", chID, "msg", msg)
-
-	switch msg := msg.(type) {
+	switch msg := e.Message.(type) {
 	case *bcproto.BlockRequest:
-		bcR.respondToPeer(msg, src)
+		bcR.respondToPeer(msg, e.Src)
 	case *bcproto.BlockResponse:
 		bi, err := types.BlockFromProto(msg.Block)
 		if err != nil {
 			bcR.Logger.Error("Block content is invalid", "err", err)
 			return
 		}
-		bcR.pool.AddBlock(src.ID(), bi, len(msgBytes))
+		bcR.pool.AddBlock(e.Src.ID(), bi, msg.Block.Size())
 	case *bcproto.StatusRequest:
 		// Send peer our state.
-		msgBytes, err := EncodeMsg(&bcproto.StatusResponse{
-			Height: bcR.store.Height(),
-			Base:   bcR.store.Base(),
+		e.Src.TrySend(p2p.Envelope{
+			ChannelID: BlocksyncChannel,
+			Message: &bcproto.StatusResponse{
+				Height: bcR.store.Height(),
+				Base:   bcR.store.Base(),
+			},
 		})
-		if err != nil {
-			bcR.Logger.Error("could not convert msg to protobut", "err", err)
-			return
-		}
-		src.TrySend(BlocksyncChannel, msgBytes)
 	case *bcproto.StatusResponse:
 		// Got a peer status. Unverified.
-		bcR.pool.SetPeerRange(src.ID(), msg.Base, msg.Height)
+		bcR.pool.SetPeerRange(e.Src.ID(), msg.Base, msg.Height)
 	case *bcproto.NoBlockResponse:
-		bcR.Logger.Debug("Peer does not have requested block", "peer", src, "height", msg.Height)
+		bcR.Logger.Debug("Peer does not have requested block", "peer", e.Src, "height", msg.Height)
 	default:
 		bcR.Logger.Error(fmt.Sprintf("Unknown message type %v", reflect.TypeOf(msg)))
 	}
@@ -253,6 +235,8 @@ func (bcR *Reactor) Receive(chID byte, src p2p.Peer, msgBytes []byte) {
 // Handle messages from the poolReactor telling the reactor what to do.
 // NOTE: Don't sleep in the FOR_LOOP or otherwise slow it down!
 func (bcR *Reactor) poolRoutine(stateSynced bool) {
+	bcR.metrics.Syncing.Set(1)
+	defer bcR.metrics.Syncing.Set(0)

 	trySyncTicker := time.NewTicker(trySyncIntervalMS * time.Millisecond)
 	defer trySyncTicker.Stop()
@@ -285,13 +269,10 @@ func (bcR *Reactor) poolRoutine(stateSynced bool) {
 				if peer == nil {
 					continue
 				}
-				msgBytes, err := EncodeMsg(&bcproto.BlockRequest{Height: request.Height})
-				if err != nil {
-					bcR.Logger.Error("could not convert msg to proto", "err", err)
-					continue
-				}
-
-				queued := peer.TrySend(BlocksyncChannel, msgBytes)
+				queued := peer.TrySend(p2p.Envelope{
+					ChannelID: BlocksyncChannel,
+					Message:   &bcproto.BlockRequest{Height: request.Height},
+				})
 				if !queued {
 					bcR.Logger.Debug("Send queue is full, drop block request", "peer", peer.ID(), "height", request.Height)
 				}
@@ -303,7 +284,7 @@ func (bcR *Reactor) poolRoutine(stateSynced bool) {

 			case <-statusUpdateTicker.C:
 				// ask for status updates
-				go bcR.BroadcastStatusRequest() //nolint: errcheck
+				go bcR.BroadcastStatusRequest()

 			}
 		}
@@ -313,24 +294,28 @@ FOR_LOOP:
 	for {
 		select {
 		case <-switchToConsensusTicker.C:
-			height, numPending, lenRequesters := bcR.pool.GetStatus()
+			height, peerHeight, numPending, lenRequesters := bcR.pool.GetStatus()
 			outbound, inbound, _ := bcR.Switch.NumPeers()
 			bcR.Logger.Debug("Consensus ticker", "numPending", numPending, "total", lenRequesters,
-				"outbound", outbound, "inbound", inbound)
+				"outbound", outbound, "inbound", inbound, "peerHeight", peerHeight)
 			if bcR.pool.IsCaughtUp() {
 				bcR.Logger.Info("Time to switch to consensus reactor!", "height", height)
 				if err := bcR.pool.Stop(); err != nil {
 					bcR.Logger.Error("Error stopping pool", "err", err)
 				}
+
+				// TODO: node struct should be responsible for switching from block sync to
+				// consensus. It's messy to have to grab the consensus reactor from the switch
 				conR, ok := bcR.Switch.Reactor("CONSENSUS").(consensusReactor)
 				if ok {
-					conR.SwitchToConsensus(state, blocksSynced > 0 || stateSynced)
+					err := conR.SwitchToConsensus(state, blocksSynced > 0 || stateSynced)
+					bcR.Logger.Error("failed to switch to consensus", "err", err)
 				}
 				// else {
 				// should only happen during testing
 				// }

-				break FOR_LOOP
+				return
 			}

 		case <-trySyncTicker.C: // chan time
@@ -429,14 +414,9 @@ FOR_LOOP:
 }

 // BroadcastStatusRequest broadcasts `BlockStore` base and height.
-func (bcR *Reactor) BroadcastStatusRequest() error {
-	bm, err := EncodeMsg(&bcproto.StatusRequest{})
-	if err != nil {
-		bcR.Logger.Error("could not convert msg to proto", "err", err)
-		return fmt.Errorf("could not convert msg to proto: %w", err)
-	}
-
-	bcR.Switch.Broadcast(BlocksyncChannel, bm)
-
-	return nil
+func (bcR *Reactor) BroadcastStatusRequest() {
+	bcR.Switch.Broadcast(p2p.Envelope{
+		ChannelID: BlocksyncChannel,
+		Message:   &bcproto.StatusRequest{},
+	})
 }
--- a/blocksync/reactor_test.go
+++ b/blocksync/reactor_test.go
@@ -95,14 +95,6 @@ func newReactor(
 		mock.Anything,
 		mock.Anything).Return(nil)

-	// Make the Reactor itself.
-	// NOTE we have to create and commit the blocks first because
-	// pool.height is determined from the store.
-	fastSync := true
-	db := dbm.NewMemDB()
-	stateStore = sm.NewStore(db, sm.StoreOptions{
-		DiscardABCIResponses: false,
-	})
 	blockExec := sm.NewBlockExecutor(stateStore, log.TestingLogger(), proxyApp.Consensus(),
 		mp, sm.EmptyEvidencePool{}, blockStore)
 	if err = stateStore.Save(state); err != nil {
@@ -145,7 +137,7 @@ func newReactor(
 		blockStore.SaveBlock(thisBlock, thisParts, lastCommit)
 	}

-	bcReactor := NewReactor(state.Copy(), blockExec, blockStore, fastSync)
+	bcReactor := NewReactor(state.Copy(), blockExec, blockStore, NopMetrics())
 	bcReactor.SetLogger(logger.With("module", "blocksync"))

 	return ReactorPair{bcReactor, proxyApp}
@@ -156,6 +148,9 @@ func TestNoBlockResponse(t *testing.T) {
 	defer os.RemoveAll(config.RootDir)
 	genDoc, privVals := randGenesisDoc(1, false, 30)

+	state, err := sm.MakeGenesisState(genDoc)
+	require.NoError(t, err)
+
 	maxBlockHeight := int64(65)

 	reactorPairs := make([]ReactorPair, 2)
@@ -169,6 +164,12 @@ func TestNoBlockResponse(t *testing.T) {

 	}, p2p.Connect2Switches)

+	for _, reactor := range reactorPairs {
+		// turn on the syncing algorithm
+		err := reactor.reactor.SwitchToBlockSync(state)
+		require.NoError(t, err)
+	}
+
 	defer func() {
 		for _, r := range reactorPairs {
 			err := r.reactor.Stop()
@@ -218,6 +219,9 @@ func TestBadBlockStopsPeer(t *testing.T) {
 	defer os.RemoveAll(config.RootDir)
 	genDoc, privVals := randGenesisDoc(1, false, 30)

+	state, err := sm.MakeGenesisState(genDoc)
+	require.NoError(t, err)
+
 	maxBlockHeight := int64(148)

 	// Other chain needs a different validator set
@@ -244,6 +248,12 @@ func TestBadBlockStopsPeer(t *testing.T) {

 	}, p2p.Connect2Switches)

+	for _, reactor := range reactorPairs {
+		// turn on the syncing algorithm
+		err := reactor.reactor.SwitchToBlockSync(state)
+		require.NoError(t, err)
+	}
+
 	defer func() {
 		for _, r := range reactorPairs {
 			err := r.reactor.Stop()
@@ -287,6 +297,11 @@ func TestBadBlockStopsPeer(t *testing.T) {
 		p2p.Connect2Switches(switches, i, len(reactorPairs)-1)
 	}

+	otherState, err := sm.MakeGenesisState(otherGenDoc)
+	require.NoError(t, err)
+	err = lastReactorPair.reactor.SwitchToBlockSync(otherState)
+	require.NoError(t, err)
+
 	for {
 		if lastReactorPair.reactor.pool.IsCaughtUp() || lastReactorPair.reactor.Switch.Peers().Size() == 0 {
 			break
--- a/cmd/tendermint/commands/debug/util.go
+++ b/cmd/tendermint/commands/debug/util.go
@@ -67,7 +67,8 @@ func copyConfig(home, dir string) error {
 func dumpProfile(dir, addr, profile string, debug int) error {
 	endpoint := fmt.Sprintf("%s/debug/pprof/%s?debug=%d", addr, profile, debug)

-	resp, err := http.Get(endpoint) //nolint: gosec
+	//nolint:all
+	resp, err := http.Get(endpoint)
 	if err != nil {
 		return fmt.Errorf("failed to query for %s profile: %w", profile, err)
 	}
--- a/cmd/tendermint/commands/rollback.go
+++ b/cmd/tendermint/commands/rollback.go
@@ -14,7 +14,7 @@ import (
 	"github.com/tendermint/tendermint/store"
 )

-var removeBlock bool = false
+var removeBlock = false

 func init() {
 	RollbackStateCmd.Flags().BoolVar(&removeBlock, "hard", false, "remove last block as well as state")
--- a/config/config.go
+++ b/config/config.go
@@ -423,6 +423,7 @@ type RPCConfig struct {
 	TLSKeyFile string `mapstructure:"tls_key_file"`

 	// pprof listen address (https://golang.org/pkg/net/http/pprof)
+	// FIXME: This should be moved under the instrumentation section
 	PprofListenAddress string `mapstructure:"pprof_laddr"`
 }

@@ -506,6 +507,10 @@ func (cfg *RPCConfig) IsCorsEnabled() bool {
 	return len(cfg.CORSAllowedOrigins) != 0
 }

+func (cfg *RPCConfig) IsPprofEnabled() bool {
+	return len(cfg.PprofListenAddress) != 0
+}
+
 func (cfg RPCConfig) KeyFile() string {
 	path := cfg.TLSKeyFile
 	if filepath.IsAbs(path) {
@@ -1201,6 +1206,10 @@ func (cfg *InstrumentationConfig) ValidateBasic() error {
 	return nil
 }

+func (cfg *InstrumentationConfig) IsPrometheusEnabled() bool {
+	return cfg.Prometheus && cfg.PrometheusListenAddr != ""
+}
+
 //-----------------------------------------------------------------------------
 // Utils

--- a/consensus/byzantine_test.go
+++ b/consensus/byzantine_test.go
@@ -26,6 +26,7 @@ import (
 	mempoolv0 "github.com/tendermint/tendermint/mempool/v0"
 	mempoolv1 "github.com/tendermint/tendermint/mempool/v1"
 	"github.com/tendermint/tendermint/p2p"
+	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"
@@ -45,6 +46,8 @@ func TestByzantinePrevoteEquivocation(t *testing.T) {
 	appFunc := newKVStore

 	genDoc, privVals := randGenesisDoc(nValidators, false, 30)
+	state, err := sm.MakeGenesisState(genDoc)
+	require.NoError(t, err)
 	css := make([]*State, nValidators)

 	for i := 0; i < nValidators; i++ {
@@ -53,7 +56,6 @@ func TestByzantinePrevoteEquivocation(t *testing.T) {
 		stateStore := sm.NewStore(stateDB, sm.StoreOptions{
 			DiscardABCIResponses: false,
 		})
-		state, _ := stateStore.LoadFromDBOrGenesisDoc(genDoc)
 		thisConfig := ResetConfig(fmt.Sprintf("%s_%d", testName, i))
 		defer os.RemoveAll(thisConfig.RootDir)
 		ensureDir(path.Dir(thisConfig.Consensus.WalFile()), 0700) // dir for wal
@@ -101,7 +103,7 @@ func TestByzantinePrevoteEquivocation(t *testing.T) {

 		// Make State
 		blockExec := sm.NewBlockExecutor(stateStore, log.TestingLogger(), proxyAppConnCon, mempool, evpool, blockStore)
-		cs := NewState(thisConfig.Consensus, state, blockExec, blockStore, mempool, evpool)
+		cs := NewState(thisConfig.Consensus, blockExec, blockStore, mempool, evpool, WithState(state.Copy()))
 		cs.SetLogger(cs.Logger)
 		// set private validator
 		pv := privVals[i]
@@ -124,7 +126,8 @@ func TestByzantinePrevoteEquivocation(t *testing.T) {
 	blocksSubs := make([]types.Subscription, 0)
 	eventBuses := make([]*types.EventBus, nValidators)
 	for i := 0; i < nValidators; i++ {
-		reactors[i] = NewReactor(css[i], true) // so we dont start the consensus states
+		// Note, we dont start the consensus states
+		reactors[i] = NewReactor(css[i])
 		reactors[i].SetLogger(css[i].Logger)

 		// eventBus is already started with the cs
@@ -165,10 +168,16 @@ func TestByzantinePrevoteEquivocation(t *testing.T) {
 			for i, peer := range peerList {
 				if i < len(peerList)/2 {
 					bcs.Logger.Info("Signed and pushed vote", "vote", prevote1, "peer", peer)
-					peer.Send(VoteChannel, MustEncode(&VoteMessage{prevote1}))
+					peer.Send(p2p.Envelope{
+						Message:   &tmcons.Vote{Vote: prevote1.ToProto()},
+						ChannelID: VoteChannel,
+					})
 				} else {
 					bcs.Logger.Info("Signed and pushed vote", "vote", prevote2, "peer", peer)
-					peer.Send(VoteChannel, MustEncode(&VoteMessage{prevote2}))
+					peer.Send(p2p.Envelope{
+						Message:   &tmcons.Vote{Vote: prevote2.ToProto()},
+						ChannelID: VoteChannel,
+					})
 				}
 			}
 		} else {
@@ -247,8 +256,7 @@ func TestByzantinePrevoteEquivocation(t *testing.T) {

 	// start the consensus reactors
 	for i := 0; i < nValidators; i++ {
-		s := reactors[i].conS.GetState()
-		reactors[i].SwitchToConsensus(s, false)
+		require.NoError(t, reactors[i].SwitchToConsensus(state.Copy(), false))
 	}
 	defer stopConsensusNet(log.TestingLogger(), reactors, eventBuses)

@@ -307,7 +315,7 @@ func TestByzantineConflictingProposalsWithPartition(t *testing.T) {
 	N := 4
 	logger := consensusLogger().With("test", "byzantine")
 	app := newKVStore
-	css, cleanup := randConsensusNet(N, "consensus_byzantine_test", newMockTickerFunc(false), app)
+	css, cleanup := randConsensusNet(t, N, "consensus_byzantine_test", newMockTickerFunc(false), app)
 	defer cleanup()

 	// give the byzantine validator a normal ticker
@@ -356,7 +364,8 @@ func TestByzantineConflictingProposalsWithPartition(t *testing.T) {
 		blocksSubs[i], err = eventBus.Subscribe(context.Background(), testSubscriber, types.EventQueryNewBlock)
 		require.NoError(t, err)

-		conR := NewReactor(css[i], true) // so we don't start the consensus states
+		// Note, we don't start the consensus states
+		conR := NewReactor(css[i])
 		conR.SetLogger(logger.With("validator", i))
 		conR.SetEventBus(eventBus)

@@ -400,13 +409,13 @@ func TestByzantineConflictingProposalsWithPartition(t *testing.T) {
 	// note these must be started before the byz
 	for i := 1; i < N; i++ {
 		cr := reactors[i].(*Reactor)
-		cr.SwitchToConsensus(cr.conS.GetState(), false)
+		require.NoError(t, cr.SwitchToConsensus(cr.conS.GetState(), false))
 	}

 	// start the byzantine state machine
 	byzR := reactors[0].(*ByzantineReactor)
 	s := byzR.reactor.conS.GetState()
-	byzR.reactor.SwitchToConsensus(s, false)
+	require.NoError(t, byzR.reactor.SwitchToConsensus(s, false))

 	// byz proposer sends one block to peers[0]
 	// and the other block to peers[1] and peers[2].
@@ -520,18 +529,26 @@ func sendProposalAndParts(
 	parts *types.PartSet,
 ) {
 	// proposal
-	msg := &ProposalMessage{Proposal: proposal}
-	peer.Send(DataChannel, MustEncode(msg))
+	peer.Send(p2p.Envelope{
+		ChannelID: DataChannel,
+		Message:   &tmcons.Proposal{Proposal: *proposal.ToProto()},
+	})

 	// parts
 	for i := 0; i < int(parts.Total()); i++ {
 		part := parts.GetPart(i)
-		msg := &BlockPartMessage{
-			Height: height, // This tells peer that this part applies to us.
-			Round:  round,  // This tells peer that this part applies to us.
-			Part:   part,
+		pp, err := part.ToProto()
+		if err != nil {
+			panic(err) // TODO: wbanfield better error handling
 		}
-		peer.Send(DataChannel, MustEncode(msg))
+		peer.Send(p2p.Envelope{
+			ChannelID: DataChannel,
+			Message: &tmcons.BlockPart{
+				Height: height, // This tells peer that this part applies to us.
+				Round:  round,  // This tells peer that this part applies to us.
+				Part:   *pp,
+			},
+		})
 	}

 	// votes
@@ -539,9 +556,14 @@ func sendProposalAndParts(
 	prevote, _ := cs.signVote(tmproto.PrevoteType, blockHash, parts.Header())
 	precommit, _ := cs.signVote(tmproto.PrecommitType, blockHash, parts.Header())
 	cs.mtx.Unlock()
-
-	peer.Send(VoteChannel, MustEncode(&VoteMessage{prevote}))
-	peer.Send(VoteChannel, MustEncode(&VoteMessage{precommit}))
+	peer.Send(p2p.Envelope{
+		ChannelID: VoteChannel,
+		Message:   &tmcons.Vote{Vote: prevote.ToProto()},
+	})
+	peer.Send(p2p.Envelope{
+		ChannelID: VoteChannel,
+		Message:   &tmcons.Vote{Vote: precommit.ToProto()},
+	})
 }

 //----------------------------------------
@@ -572,14 +594,14 @@ func (br *ByzantineReactor) AddPeer(peer p2p.Peer) {

 	// Send our state to peer.
 	// If we're syncing, broadcast a RoundStepMessage later upon SwitchToConsensus().
-	if !br.reactor.waitSync {
+	if br.reactor.conS.IsRunning() {
 		br.reactor.sendNewRoundStepMessage(peer)
 	}
 }
 func (br *ByzantineReactor) RemovePeer(peer p2p.Peer, reason interface{}) {
 	br.reactor.RemovePeer(peer, reason)
 }
-func (br *ByzantineReactor) Receive(chID byte, peer p2p.Peer, msgBytes []byte) {
-	br.reactor.Receive(chID, peer, msgBytes)
+func (br *ByzantineReactor) Receive(e p2p.Envelope) {
+	br.reactor.Receive(e)
 }
 func (br *ByzantineReactor) InitPeer(peer p2p.Peer) p2p.Peer { return peer }
--- a/consensus/common_test.go
+++ b/consensus/common_test.go
@@ -440,7 +440,7 @@ func newStateWithConfigAndBlockStore(
 	}

 	blockExec := sm.NewBlockExecutor(stateStore, log.TestingLogger(), proxyAppConnCon, mempool, evpool, blockStore)
-	cs := NewState(thisConfig.Consensus, state, blockExec, blockStore, mempool, evpool)
+	cs := NewState(thisConfig.Consensus, blockExec, blockStore, mempool, evpool, WithState(state.Copy()))
 	cs.SetLogger(log.TestingLogger().With("module", "consensus"))
 	cs.SetPrivValidator(pv)

@@ -747,18 +747,17 @@ func consensusLogger() log.Logger {
 	}).With("module", "consensus")
 }

-func randConsensusNet(nValidators int, testName string, tickerFunc func() TimeoutTicker,
+func randConsensusNet(t *testing.T, nValidators int, testName string, tickerFunc func() TimeoutTicker,
 	appFunc func() abci.Application, configOpts ...func(*cfg.Config)) ([]*State, cleanupFunc) {
+	t.Helper()
 	genDoc, privVals := randGenesisDoc(nValidators, false, 30)
+	state, err := sm.MakeGenesisState(genDoc)
+	require.NoError(t, err)
 	css := make([]*State, nValidators)
 	logger := consensusLogger()
 	configRootDirs := make([]string, 0, nValidators)
 	for i := 0; i < nValidators; i++ {
 		stateDB := dbm.NewMemDB() // each state needs its own db
-		stateStore := sm.NewStore(stateDB, sm.StoreOptions{
-			DiscardABCIResponses: false,
-		})
-		state, _ := stateStore.LoadFromDBOrGenesisDoc(genDoc)
 		thisConfig := ResetConfig(fmt.Sprintf("%s_%d", testName, i))
 		configRootDirs = append(configRootDirs, thisConfig.RootDir)
 		for _, opt := range configOpts {
@@ -772,6 +771,7 @@ func randConsensusNet(nValidators int, testName string, tickerFunc func() Timeou
 		css[i] = newStateWithConfigAndBlockStore(thisConfig, state, privVals[i], app, stateDB)
 		css[i].SetTimeoutTicker(tickerFunc())
 		css[i].SetLogger(logger.With("validator", i, "module", "consensus"))
+		css[i].updateToState(state.Copy())
 	}
 	return css, func() {
 		for _, dir := range configRootDirs {
--- a/consensus/invalid_test.go
+++ b/consensus/invalid_test.go
@@ -7,6 +7,7 @@ import (
 	"github.com/tendermint/tendermint/libs/log"
 	tmrand "github.com/tendermint/tendermint/libs/rand"
 	"github.com/tendermint/tendermint/p2p"
+	tmcons "github.com/tendermint/tendermint/proto/tendermint/consensus"
 	tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
 	"github.com/tendermint/tendermint/types"
 )
@@ -18,7 +19,7 @@ import (
 // Ensure a testnet makes blocks
 func TestReactorInvalidPrecommit(t *testing.T) {
 	N := 4
-	css, cleanup := randConsensusNet(N, "consensus_reactor_test", newMockTickerFunc(true), newKVStore)
+	css, cleanup := randConsensusNet(t, N, "consensus_reactor_test", newMockTickerFunc(true), newKVStore)
 	defer cleanup()

 	for i := 0; i < 4; i++ {
@@ -94,7 +95,10 @@ func invalidDoPrevoteFunc(t *testing.T, height int64, round int32, cs *State, sw
 		peers := sw.Peers().List()
 		for _, peer := range peers {
 			cs.Logger.Info("Sending bad vote", "block", blockHash, "peer", peer)
-			peer.Send(VoteChannel, MustEncode(&VoteMessage{precommit}))
+			peer.Send(p2p.Envelope{
+				Message:   &tmcons.Vote{Vote: precommit.ToProto()},
+				ChannelID: VoteChannel,
+			})
 		}
 	}()
 }
--- a/consensus/metrics.gen.go
+++ b/consensus/metrics.gen.go
@@ -118,18 +118,6 @@ func PrometheusMetrics(namespace string, labelsAndValues ...string) *Metrics {
 			Name:      "latest_block_height",
 			Help:      "The latest block height.",
 		}, labels).With(labelsAndValues...),
-		BlockSyncing: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
-			Namespace: namespace,
-			Subsystem: MetricsSubsystem,
-			Name:      "block_syncing",
-			Help:      "Whether or not a node is block syncing. 1 if yes, 0 if no.",
-		}, labels).With(labelsAndValues...),
-		StateSyncing: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
-			Namespace: namespace,
-			Subsystem: MetricsSubsystem,
-			Name:      "state_syncing",
-			Help:      "Whether or not a node is state syncing. 1 if yes, 0 if no.",
-		}, labels).With(labelsAndValues...),
 		BlockParts: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
 			Namespace: namespace,
 			Subsystem: MetricsSubsystem,
@@ -208,8 +196,6 @@ func NopMetrics() *Metrics {
 		BlockSizeBytes:            discard.NewGauge(),
 		TotalTxs:                  discard.NewGauge(),
 		CommittedHeight:           discard.NewGauge(),
-		BlockSyncing:              discard.NewGauge(),
-		StateSyncing:              discard.NewGauge(),
 		BlockParts:                discard.NewCounter(),
 		StepDurationSeconds:       discard.NewHistogram(),
 		BlockGossipPartsReceived:  discard.NewCounter(),
--- a/consensus/metrics.go
+++ b/consensus/metrics.go
@@ -61,10 +61,6 @@ type Metrics struct {
 	TotalTxs metrics.Gauge
 	// The latest block height.
 	CommittedHeight metrics.Gauge `metrics_name:"latest_block_height"`
-	// Whether or not a node is block syncing. 1 if yes, 0 if no.
-	BlockSyncing metrics.Gauge
-	// Whether or not a node is state syncing. 1 if yes, 0 if no.
-	StateSyncing metrics.Gauge

 	// Number of block parts transmitted by each peer.
 	BlockParts metrics.Counter `metrics_labels:"peer_id"`
--- a/consensus/msgs.go
+++ b/consensus/msgs.go
@@ -5,7 +5,6 @@ import (
 	"fmt"

 	"github.com/cosmos/gogoproto/proto"
-
 	cstypes "github.com/tendermint/tendermint/consensus/types"
 	"github.com/tendermint/tendermint/libs/bits"
 	tmmath "github.com/tendermint/tendermint/libs/math"
@@ -15,173 +14,147 @@ import (
 	"github.com/tendermint/tendermint/types"
 )

-// MsgToProto takes a consensus message type and returns the proto defined consensus message
-func MsgToProto(msg Message) (*tmcons.Message, error) {
+// MsgToProto takes a consensus message type and returns the proto defined consensus message.
+//
+// TODO: This needs to be removed, but WALToProto depends on this.
+func MsgToProto(msg Message) (proto.Message, error) {
 	if msg == nil {
 		return nil, errors.New("consensus: message is nil")
 	}
-	var pb tmcons.Message
+	var pb proto.Message

 	switch msg := msg.(type) {
 	case *NewRoundStepMessage:
-		pb = tmcons.Message{
-			Sum: &tmcons.Message_NewRoundStep{
-				NewRoundStep: &tmcons.NewRoundStep{
-					Height:                msg.Height,
-					Round:                 msg.Round,
-					Step:                  uint32(msg.Step),
-					SecondsSinceStartTime: msg.SecondsSinceStartTime,
-					LastCommitRound:       msg.LastCommitRound,
-				},
-			},
+		pb = &tmcons.NewRoundStep{
+			Height:                msg.Height,
+			Round:                 msg.Round,
+			Step:                  uint32(msg.Step),
+			SecondsSinceStartTime: msg.SecondsSinceStartTime,
+			LastCommitRound:       msg.LastCommitRound,
 		}
+
 	case *NewValidBlockMessage:
 		pbPartSetHeader := msg.BlockPartSetHeader.ToProto()
 		pbBits := msg.BlockParts.ToProto()
-		pb = tmcons.Message{
-			Sum: &tmcons.Message_NewValidBlock{
-				NewValidBlock: &tmcons.NewValidBlock{
-					Height:             msg.Height,
-					Round:              msg.Round,
-					BlockPartSetHeader: pbPartSetHeader,
-					BlockParts:         pbBits,
-					IsCommit:           msg.IsCommit,
-				},
-			},
+		pb = &tmcons.NewValidBlock{
+			Height:             msg.Height,
+			Round:              msg.Round,
+			BlockPartSetHeader: pbPartSetHeader,
+			BlockParts:         pbBits,
+			IsCommit:           msg.IsCommit,
 		}
+
 	case *ProposalMessage:
 		pbP := msg.Proposal.ToProto()
-		pb = tmcons.Message{
-			Sum: &tmcons.Message_Proposal{
-				Proposal: &tmcons.Proposal{
-					Proposal: *pbP,
-				},
-			},
+		pb = &tmcons.Proposal{
+			Proposal: *pbP,
 		}
+
 	case *ProposalPOLMessage:
 		pbBits := msg.ProposalPOL.ToProto()
-		pb = tmcons.Message{
-			Sum: &tmcons.Message_ProposalPol{
-				ProposalPol: &tmcons.ProposalPOL{
-					Height:           msg.Height,
-					ProposalPolRound: msg.ProposalPOLRound,
-					ProposalPol:      *pbBits,
-				},
-			},
+		pb = &tmcons.ProposalPOL{
+			Height:           msg.Height,
+			ProposalPolRound: msg.ProposalPOLRound,
+			ProposalPol:      *pbBits,
 		}
+
 	case *BlockPartMessage:
 		parts, err := msg.Part.ToProto()
 		if err != nil {
 			return nil, fmt.Errorf("msg to proto error: %w", err)
 		}
-		pb = tmcons.Message{
-			Sum: &tmcons.Message_BlockPart{
-				BlockPart: &tmcons.BlockPart{
-					Height: msg.Height,
-					Round:  msg.Round,
-					Part:   *parts,
-				},
-			},
+		pb = &tmcons.BlockPart{
+			Height: msg.Height,
+			Round:  msg.Round,
+			Part:   *parts,
 		}
+
 	case *VoteMessage:
 		vote := msg.Vote.ToProto()
-		pb = tmcons.Message{
-			Sum: &tmcons.Message_Vote{
-				Vote: &tmcons.Vote{
-					Vote: vote,
-				},
-			},
+		pb = &tmcons.Vote{
+			Vote: vote,
 		}
+
 	case *HasVoteMessage:
-		pb = tmcons.Message{
-			Sum: &tmcons.Message_HasVote{
-				HasVote: &tmcons.HasVote{
-					Height: msg.Height,
-					Round:  msg.Round,
-					Type:   msg.Type,
-					Index:  msg.Index,
-				},
-			},
+		pb = &tmcons.HasVote{
+			Height: msg.Height,
+			Round:  msg.Round,
+			Type:   msg.Type,
+			Index:  msg.Index,
 		}
+
 	case *VoteSetMaj23Message:
 		bi := msg.BlockID.ToProto()
-		pb = tmcons.Message{
-			Sum: &tmcons.Message_VoteSetMaj23{
-				VoteSetMaj23: &tmcons.VoteSetMaj23{
-					Height:  msg.Height,
-					Round:   msg.Round,
-					Type:    msg.Type,
-					BlockID: bi,
-				},
-			},
+		pb = &tmcons.VoteSetMaj23{
+			Height:  msg.Height,
+			Round:   msg.Round,
+			Type:    msg.Type,
+			BlockID: bi,
 		}
+
 	case *VoteSetBitsMessage:
 		bi := msg.BlockID.ToProto()
 		bits := msg.Votes.ToProto()

-		vsb := &tmcons.Message_VoteSetBits{
-			VoteSetBits: &tmcons.VoteSetBits{
-				Height:  msg.Height,
-				Round:   msg.Round,
-				Type:    msg.Type,
-				BlockID: bi,
-			},
+		vsb := &tmcons.VoteSetBits{
+			Height:  msg.Height,
+			Round:   msg.Round,
+			Type:    msg.Type,
+			BlockID: bi,
 		}

 		if bits != nil {
-			vsb.VoteSetBits.Votes = *bits
+			vsb.Votes = *bits
 		}

-		pb = tmcons.Message{
-			Sum: vsb,
-		}
+		pb = vsb

 	default:
 		return nil, fmt.Errorf("consensus: message not recognized: %T", msg)
 	}

-	return &pb, nil
+	return pb, nil
 }

 // MsgFromProto takes a consensus proto message and returns the native go type
-func MsgFromProto(msg *tmcons.Message) (Message, error) {
-	if msg == nil {
+func MsgFromProto(p proto.Message) (Message, error) {
+	if p == nil {
 		return nil, errors.New("consensus: nil message")
 	}
 	var pb Message

-	switch msg := msg.Sum.(type) {
-	case *tmcons.Message_NewRoundStep:
-		rs, err := tmmath.SafeConvertUint8(int64(msg.NewRoundStep.Step))
+	switch msg := p.(type) {
+	case *tmcons.NewRoundStep:
+		rs, err := tmmath.SafeConvertUint8(int64(msg.Step))
 		// deny message based on possible overflow
 		if err != nil {
 			return nil, fmt.Errorf("denying message due to possible overflow: %w", err)
 		}
 		pb = &NewRoundStepMessage{
-			Height:                msg.NewRoundStep.Height,
-			Round:                 msg.NewRoundStep.Round,
+			Height:                msg.Height,
+			Round:                 msg.Round,
 			Step:                  cstypes.RoundStepType(rs),
-			SecondsSinceStartTime: msg.NewRoundStep.SecondsSinceStartTime,
-			LastCommitRound:       msg.NewRoundStep.LastCommitRound,
+			SecondsSinceStartTime: msg.SecondsSinceStartTime,
+			LastCommitRound:       msg.LastCommitRound,
 		}
-	case *tmcons.Message_NewValidBlock:
-		pbPartSetHeader, err := types.PartSetHeaderFromProto(&msg.NewValidBlock.BlockPartSetHeader)
+	case *tmcons.NewValidBlock:
+		pbPartSetHeader, err := types.PartSetHeaderFromProto(&msg.BlockPartSetHeader)
 		if err != nil {
 			return nil, fmt.Errorf("parts to proto error: %w", err)
 		}

 		pbBits := new(bits.BitArray)
-		pbBits.FromProto(msg.NewValidBlock.BlockParts)
+		pbBits.FromProto(msg.BlockParts)

 		pb = &NewValidBlockMessage{
-			Height:             msg.NewValidBlock.Height,
-			Round:              msg.NewValidBlock.Round,
+			Height:             msg.Height,
+			Round:              msg.Round,
 			BlockPartSetHeader: *pbPartSetHeader,
 			BlockParts:         pbBits,
-			IsCommit:           msg.NewValidBlock.IsCommit,
+			IsCommit:           msg.IsCommit,
 		}
-	case *tmcons.Message_Proposal:
-		pbP, err := types.ProposalFromProto(&msg.Proposal.Proposal)
+	case *tmcons.Proposal:
+		pbP, err := types.ProposalFromProto(&msg.Proposal)
 		if err != nil {
 			return nil, fmt.Errorf("proposal msg to proto error: %w", err)
 		}
@@ -189,26 +162,26 @@ func MsgFromProto(msg *tmcons.Message) (Message, error) {
 		pb = &ProposalMessage{
 			Proposal: pbP,
 		}
-	case *tmcons.Message_ProposalPol:
+	case *tmcons.ProposalPOL:
 		pbBits := new(bits.BitArray)
-		pbBits.FromProto(&msg.ProposalPol.ProposalPol)
+		pbBits.FromProto(&msg.ProposalPol)
 		pb = &ProposalPOLMessage{
-			Height:           msg.ProposalPol.Height,
-			ProposalPOLRound: msg.ProposalPol.ProposalPolRound,
+			Height:           msg.Height,
+			ProposalPOLRound: msg.ProposalPolRound,
 			ProposalPOL:      pbBits,
 		}
-	case *tmcons.Message_BlockPart:
-		parts, err := types.PartFromProto(&msg.BlockPart.Part)
+	case *tmcons.BlockPart:
+		parts, err := types.PartFromProto(&msg.Part)
 		if err != nil {
 			return nil, fmt.Errorf("blockpart msg to proto error: %w", err)
 		}
 		pb = &BlockPartMessage{
-			Height: msg.BlockPart.Height,
-			Round:  msg.BlockPart.Round,
+			Height: msg.Height,
+			Round:  msg.Round,
 			Part:   parts,
 		}
-	case *tmcons.Message_Vote:
-		vote, err := types.VoteFromProto(msg.Vote.Vote)
+	case *tmcons.Vote:
+		vote, err := types.VoteFromProto(msg.Vote)
 		if err != nil {
 			return nil, fmt.Errorf("vote msg to proto error: %w", err)
 		}
@@ -216,36 +189,36 @@ func MsgFromProto(msg *tmcons.Message) (Message, error) {
 		pb = &VoteMessage{
 			Vote: vote,
 		}
-	case *tmcons.Message_HasVote:
+	case *tmcons.HasVote:
 		pb = &HasVoteMessage{
-			Height: msg.HasVote.Height,
-			Round:  msg.HasVote.Round,
-			Type:   msg.HasVote.Type,
-			Index:  msg.HasVote.Index,
+			Height: msg.Height,
+			Round:  msg.Round,
+			Type:   msg.Type,
+			Index:  msg.Index,
 		}
-	case *tmcons.Message_VoteSetMaj23:
-		bi, err := types.BlockIDFromProto(&msg.VoteSetMaj23.BlockID)
+	case *tmcons.VoteSetMaj23:
+		bi, err := types.BlockIDFromProto(&msg.BlockID)
 		if err != nil {
 			return nil, fmt.Errorf("voteSetMaj23 msg to proto error: %w", err)
 		}
 		pb = &VoteSetMaj23Message{
-			Height:  msg.VoteSetMaj23.Height,
-			Round:   msg.VoteSetMaj23.Round,
-			Type:    msg.VoteSetMaj23.Type,
+			Height:  msg.Height,
+			Round:   msg.Round,
+			Type:    msg.Type,
 			BlockID: *bi,
 		}
-	case *tmcons.Message_VoteSetBits:
-		bi, err := types.BlockIDFromProto(&msg.VoteSetBits.BlockID)
+	case *tmcons.VoteSetBits:
+		bi, err := types.BlockIDFromProto(&msg.BlockID)
 		if err != nil {
 			return nil, fmt.Errorf("voteSetBits msg to proto error: %w", err)
 		}
 		bits := new(bits.BitArray)
-		bits.FromProto(&msg.VoteSetBits.Votes)
+		bits.FromProto(&msg.Votes)

 		pb = &VoteSetBitsMessage{
-			Height:  msg.VoteSetBits.Height,
-			Round:   msg.VoteSetBits.Round,
-			Type:    msg.VoteSetBits.Type,
+			Height:  msg.Height,
+			Round:   msg.Round,
+			Type:    msg.Type,
 			BlockID: *bi,
 			Votes:   bits,
 		}
@@ -260,20 +233,6 @@ func MsgFromProto(msg *tmcons.Message) (Message, error) {
 	return pb, nil
 }

-// MustEncode takes the reactors msg, makes it proto and marshals it
-// this mimics `MustMarshalBinaryBare` in that is panics on error
-func MustEncode(msg Message) []byte {
-	pb, err := MsgToProto(msg)
-	if err != nil {
-		panic(err)
-	}
-	enc, err := proto.Marshal(pb)
-	if err != nil {
-		panic(err)
-	}
-	return enc
-}
-
 // WALToProto takes a WAL message and return a proto walMessage and error
 func WALToProto(msg WALMessage) (*tmcons.WALMessage, error) {
 	var pb tmcons.WALMessage
@@ -294,10 +253,14 @@ func WALToProto(msg WALMessage) (*tmcons.WALMessage, error) {
 		if err != nil {
 			return nil, err
 		}
+		if w, ok := consMsg.(p2p.Wrapper); ok {
+			consMsg = w.Wrap()
+		}
+		cm := consMsg.(*tmcons.Message)
 		pb = tmcons.WALMessage{
 			Sum: &tmcons.WALMessage_MsgInfo{
 				MsgInfo: &tmcons.MsgInfo{
-					Msg:    *consMsg,
+					Msg:    *cm,
 					PeerID: string(msg.PeerID),
 				},
 			},
@@ -343,7 +306,11 @@ func WALFromProto(msg *tmcons.WALMessage) (WALMessage, error) {
 			Step:   msg.EventDataRoundState.Step,
 		}
 	case *tmcons.WALMessage_MsgInfo:
-		walMsg, err := MsgFromProto(&msg.MsgInfo.Msg)
+		um, err := msg.MsgInfo.Msg.Unwrap()
+		if err != nil {
+			return nil, fmt.Errorf("unwrap message: %w", err)
+		}
+		walMsg, err := MsgFromProto(um)
 		if err != nil {
 			return nil, fmt.Errorf("msgInfo from proto error: %w", err)
 		}
--- a/consensus/msgs_test.go
+++ b/consensus/msgs_test.go
@@ -71,7 +71,7 @@ func TestMsgToProto(t *testing.T) {
 	testsCases := []struct {
 		testName string
 		msg      Message
-		want     *tmcons.Message
+		want     proto.Message
 		wantErr  bool
 	}{
 		{"successful NewRoundStepMessage", &NewRoundStepMessage{
@@ -80,17 +80,15 @@ func TestMsgToProto(t *testing.T) {
 			Step:                  1,
 			SecondsSinceStartTime: 1,
 			LastCommitRound:       2,
-		}, &tmcons.Message{
-			Sum: &tmcons.Message_NewRoundStep{
-				NewRoundStep: &tmcons.NewRoundStep{
-					Height:                2,
-					Round:                 1,
-					Step:                  1,
-					SecondsSinceStartTime: 1,
-					LastCommitRound:       2,
-				},
-			},
-		}, false},
+		}, &tmcons.NewRoundStep{
+			Height:                2,
+			Round:                 1,
+			Step:                  1,
+			SecondsSinceStartTime: 1,
+			LastCommitRound:       2,
+		},
+
+			false},

 		{"successful NewValidBlockMessage", &NewValidBlockMessage{
 			Height:             1,
@@ -98,92 +96,78 @@ func TestMsgToProto(t *testing.T) {
 			BlockPartSetHeader: psh,
 			BlockParts:         bits,
 			IsCommit:           false,
-		}, &tmcons.Message{
-			Sum: &tmcons.Message_NewValidBlock{
-				NewValidBlock: &tmcons.NewValidBlock{
-					Height:             1,
-					Round:              1,
-					BlockPartSetHeader: pbPsh,
-					BlockParts:         pbBits,
-					IsCommit:           false,
-				},
-			},
-		}, false},
+		}, &tmcons.NewValidBlock{
+			Height:             1,
+			Round:              1,
+			BlockPartSetHeader: pbPsh,
+			BlockParts:         pbBits,
+			IsCommit:           false,
+		},
+
+			false},
 		{"successful BlockPartMessage", &BlockPartMessage{
 			Height: 100,
 			Round:  1,
 			Part:   &parts,
-		}, &tmcons.Message{
-			Sum: &tmcons.Message_BlockPart{
-				BlockPart: &tmcons.BlockPart{
-					Height: 100,
-					Round:  1,
-					Part:   *pbParts,
-				},
-			},
-		}, false},
+		}, &tmcons.BlockPart{
+			Height: 100,
+			Round:  1,
+			Part:   *pbParts,
+		},
+
+			false},
 		{"successful ProposalPOLMessage", &ProposalPOLMessage{
 			Height:           1,
 			ProposalPOLRound: 1,
 			ProposalPOL:      bits,
-		}, &tmcons.Message{
-			Sum: &tmcons.Message_ProposalPol{
-				ProposalPol: &tmcons.ProposalPOL{
-					Height:           1,
-					ProposalPolRound: 1,
-					ProposalPol:      *pbBits,
-				},
-			}}, false},
+		}, &tmcons.ProposalPOL{
+			Height:           1,
+			ProposalPolRound: 1,
+			ProposalPol:      *pbBits,
+		},
+			false},
 		{"successful ProposalMessage", &ProposalMessage{
 			Proposal: &proposal,
-		}, &tmcons.Message{
-			Sum: &tmcons.Message_Proposal{
-				Proposal: &tmcons.Proposal{
-					Proposal: *pbProposal,
-				},
-			},
-		}, false},
+		}, &tmcons.Proposal{
+			Proposal: *pbProposal,
+		},
+
+			false},
 		{"successful VoteMessage", &VoteMessage{
 			Vote: vote,
-		}, &tmcons.Message{
-			Sum: &tmcons.Message_Vote{
-				Vote: &tmcons.Vote{
-					Vote: pbVote,
-				},
-			},
-		}, false},
+		}, &tmcons.Vote{
+			Vote: pbVote,
+		},
+
+			false},
 		{"successful VoteSetMaj23", &VoteSetMaj23Message{
 			Height:  1,
 			Round:   1,
 			Type:    1,
 			BlockID: bi,
-		}, &tmcons.Message{
-			Sum: &tmcons.Message_VoteSetMaj23{
-				VoteSetMaj23: &tmcons.VoteSetMaj23{
-					Height:  1,
-					Round:   1,
-					Type:    1,
-					BlockID: pbBi,
-				},
-			},
-		}, false},
+		}, &tmcons.VoteSetMaj23{
+			Height:  1,
+			Round:   1,
+			Type:    1,
+			BlockID: pbBi,
+		},
+
+			false},
 		{"successful VoteSetBits", &VoteSetBitsMessage{
 			Height:  1,
 			Round:   1,
 			Type:    1,
 			BlockID: bi,
 			Votes:   bits,
-		}, &tmcons.Message{
-			Sum: &tmcons.Message_VoteSetBits{
-				VoteSetBits: &tmcons.VoteSetBits{
-					Height:  1,
-					Round:   1,
-					Type:    1,
-					BlockID: pbBi,
-					Votes:   *pbBits,
-				},
-			},
-		}, false},
+		}, &tmcons.VoteSetBits{
+			Height:  1,
+			Round:   1,
+			Type:    1,
+			BlockID: pbBi,
+			Votes:   *pbBits,
+		},
+
+			false},
 		{"failure", nil, &tmcons.Message{}, true},
 	}
 	for _, tt := range testsCases {
--- a/consensus/reactor.go
+++ b/consensus/reactor.go
@@ -7,8 +7,6 @@ import (
 	"sync"
 	"time"

-	"github.com/cosmos/gogoproto/proto"
-
 	cstypes "github.com/tendermint/tendermint/consensus/types"
 	"github.com/tendermint/tendermint/libs/bits"
 	tmevents "github.com/tendermint/tendermint/libs/events"
@@ -44,7 +42,6 @@ type Reactor struct {
 	conS *State

 	mtx      tmsync.RWMutex
-	waitSync bool
 	eventBus *types.EventBus
 	rs       *cstypes.RoundState

@@ -55,12 +52,11 @@ type ReactorOption func(*Reactor)

 // NewReactor returns a new Reactor with the given
 // consensusState.
-func NewReactor(consensusState *State, waitSync bool, options ...ReactorOption) *Reactor {
+func NewReactor(consensusState *State, options ...ReactorOption) *Reactor {
 	conR := &Reactor{
-		conS:     consensusState,
-		waitSync: waitSync,
-		rs:       consensusState.GetRoundState(),
-		Metrics:  NopMetrics(),
+		conS:    consensusState,
+		rs:      consensusState.GetRoundState(),
+		Metrics: NopMetrics(),
 	}
 	conR.BaseReactor = *p2p.NewBaseReactor("Consensus", conR)

@@ -74,21 +70,12 @@ func NewReactor(consensusState *State, waitSync bool, options ...ReactorOption)
 // OnStart implements BaseService by subscribing to events, which later will be
 // broadcasted to other peers and starting state if we're not in block sync.
 func (conR *Reactor) OnStart() error {
-	conR.Logger.Info("Reactor ", "waitSync", conR.WaitSync())
-
 	// start routine that computes peer statistics for evaluating peer quality
 	go conR.peerStatsRoutine()

 	conR.subscribeToBroadcastEvents()
 	go conR.updateRoundStateRoutine()

-	if !conR.WaitSync() {
-		err := conR.conS.Start()
-		if err != nil {
-			return err
-		}
-	}
-
 	return nil
 }

@@ -96,47 +83,34 @@ func (conR *Reactor) OnStart() error {
 // state.
 func (conR *Reactor) OnStop() {
 	conR.unsubscribeFromBroadcastEvents()
-	if err := conR.conS.Stop(); err != nil {
-		conR.Logger.Error("Error stopping consensus state", "err", err)
-	}
-	if !conR.WaitSync() {
+	if conR.conS.IsRunning() {
+		if err := conR.conS.Stop(); err != nil {
+			conR.Logger.Error("Error stopping consensus state", "err", err)
+		}
 		conR.conS.Wait()
 	}
 }

+func (conR *Reactor) IsConsensusRunning() bool {
+	return conR.conS.IsRunning()
+}
+
 // SwitchToConsensus switches from block_sync mode to consensus mode.
 // It resets the state, turns off block_sync, and starts the consensus state-machine
-func (conR *Reactor) SwitchToConsensus(state sm.State, skipWAL bool) {
+func (conR *Reactor) SwitchToConsensus(state sm.State, skipWAL bool) error {
 	conR.Logger.Info("SwitchToConsensus")

 	// We have no votes, so reconstruct LastCommit from SeenCommit.
-	if state.LastBlockHeight > 0 {
+	if state.LastBlockHeight > state.InitialHeight {
 		conR.conS.reconstructLastCommit(state)
 	}

-	// NOTE: The line below causes broadcastNewRoundStepRoutine() to broadcast a
-	// NewRoundStepMessage.
 	conR.conS.updateToState(state)

-	conR.mtx.Lock()
-	conR.waitSync = false
-	conR.mtx.Unlock()
-	conR.Metrics.BlockSyncing.Set(0)
-	conR.Metrics.StateSyncing.Set(0)
-
 	if skipWAL {
 		conR.conS.doWALCatchup = false
 	}
-	err := conR.conS.Start()
-	if err != nil {
-		panic(fmt.Sprintf(`Failed to start consensus state: %v
-
-conS:
-%+v
-
-conR:
-%+v`, err, conR.conS, conR))
-	}
+	return conR.conS.Start()
 }

 // GetChannels implements Reactor
@@ -148,6 +122,7 @@ func (conR *Reactor) GetChannels() []*p2p.ChannelDescriptor {
 			Priority:            6,
 			SendQueueCapacity:   100,
 			RecvMessageCapacity: maxMsgSize,
+			MessageType:         &tmcons.Message{},
 		},
 		{
 			ID: DataChannel, // maybe split between gossiping current block and catchup stuff
@@ -156,6 +131,7 @@ func (conR *Reactor) GetChannels() []*p2p.ChannelDescriptor {
 			SendQueueCapacity:   100,
 			RecvBufferCapacity:  50 * 4096,
 			RecvMessageCapacity: maxMsgSize,
+			MessageType:         &tmcons.Message{},
 		},
 		{
 			ID:                  VoteChannel,
@@ -163,6 +139,7 @@ func (conR *Reactor) GetChannels() []*p2p.ChannelDescriptor {
 			SendQueueCapacity:   100,
 			RecvBufferCapacity:  100 * 100,
 			RecvMessageCapacity: maxMsgSize,
+			MessageType:         &tmcons.Message{},
 		},
 		{
 			ID:                  VoteSetBitsChannel,
@@ -170,6 +147,7 @@ func (conR *Reactor) GetChannels() []*p2p.ChannelDescriptor {
 			SendQueueCapacity:   2,
 			RecvBufferCapacity:  1024,
 			RecvMessageCapacity: maxMsgSize,
+			MessageType:         &tmcons.Message{},
 		},
 	}
 }
@@ -199,7 +177,7 @@ func (conR *Reactor) AddPeer(peer p2p.Peer) {

 	// Send our state to peer.
 	// If we're block_syncing, broadcast a RoundStepMessage later upon SwitchToConsensus().
-	if !conR.WaitSync() {
+	if conR.conS.IsRunning() {
 		conR.sendNewRoundStepMessage(peer)
 	}
 }
@@ -223,34 +201,33 @@ func (conR *Reactor) RemovePeer(peer p2p.Peer, reason interface{}) {
 // Peer state updates can happen in parallel, but processing of
 // proposals, block parts, and votes are ordered by the receiveRoutine
 // NOTE: blocks on consensus state for proposals, block parts, and votes
-func (conR *Reactor) Receive(chID byte, src p2p.Peer, msgBytes []byte) {
+func (conR *Reactor) Receive(e p2p.Envelope) {
 	if !conR.IsRunning() {
-		conR.Logger.Debug("Receive", "src", src, "chId", chID, "bytes", msgBytes)
+		conR.Logger.Debug("Receive", "src", e.Src, "chId", e.ChannelID)
 		return
 	}
-
-	msg, err := decodeMsg(msgBytes)
+	msg, err := MsgFromProto(e.Message)
 	if err != nil {
-		conR.Logger.Error("Error decoding message", "src", src, "chId", chID, "err", err)
-		conR.Switch.StopPeerForError(src, err)
+		conR.Logger.Error("Error decoding message", "src", e.Src, "chId", e.ChannelID, "err", err)
+		conR.Switch.StopPeerForError(e.Src, err)
 		return
 	}

 	if err = msg.ValidateBasic(); err != nil {
-		conR.Logger.Error("Peer sent us invalid msg", "peer", src, "msg", msg, "err", err)
-		conR.Switch.StopPeerForError(src, err)
+		conR.Logger.Error("Peer sent us invalid msg", "peer", e.Src, "msg", e.Message, "err", err)
+		conR.Switch.StopPeerForError(e.Src, err)
 		return
 	}

-	conR.Logger.Debug("Receive", "src", src, "chId", chID, "msg", msg)
+	conR.Logger.Debug("Receive", "src", e.Src, "chId", e.ChannelID, "msg", msg)

 	// Get peer states
-	ps, ok := src.Get(types.PeerStateKey).(*PeerState)
+	ps, ok := e.Src.Get(types.PeerStateKey).(*PeerState)
 	if !ok {
-		panic(fmt.Sprintf("Peer %v has no state", src))
+		panic(fmt.Sprintf("Peer %v has no state", e.Src))
 	}

-	switch chID {
+	switch e.ChannelID {
 	case StateChannel:
 		switch msg := msg.(type) {
 		case *NewRoundStepMessage:
@@ -258,8 +235,8 @@ func (conR *Reactor) Receive(chID byte, src p2p.Peer, msgBytes []byte) {
 			initialHeight := conR.conS.state.InitialHeight
 			conR.conS.mtx.Unlock()
 			if err = msg.ValidateHeight(initialHeight); err != nil {
-				conR.Logger.Error("Peer sent us invalid msg", "peer", src, "msg", msg, "err", err)
-				conR.Switch.StopPeerForError(src, err)
+				conR.Logger.Error("Peer sent us invalid msg", "peer", e.Src, "msg", msg, "err", err)
+				conR.Switch.StopPeerForError(e.Src, err)
 				return
 			}
 			ps.ApplyNewRoundStepMessage(msg)
@@ -278,7 +255,7 @@ func (conR *Reactor) Receive(chID byte, src p2p.Peer, msgBytes []byte) {
 			// Peer claims to have a maj23 for some BlockID at H,R,S,
 			err := votes.SetPeerMaj23(msg.Round, msg.Type, ps.peer.ID(), msg.BlockID)
 			if err != nil {
-				conR.Switch.StopPeerForError(src, err)
+				conR.Switch.StopPeerForError(e.Src, err)
 				return
 			}
 			// Respond with a VoteSetBitsMessage showing which votes we have.
@@ -292,38 +269,44 @@ func (conR *Reactor) Receive(chID byte, src p2p.Peer, msgBytes []byte) {
 			default:
 				panic("Bad VoteSetBitsMessage field Type. Forgot to add a check in ValidateBasic?")
 			}
-			src.TrySend(VoteSetBitsChannel, MustEncode(&VoteSetBitsMessage{
+			eMsg := &tmcons.VoteSetBits{
 				Height:  msg.Height,
 				Round:   msg.Round,
 				Type:    msg.Type,
-				BlockID: msg.BlockID,
-				Votes:   ourVotes,
-			}))
+				BlockID: msg.BlockID.ToProto(),
+			}
+			if votes := ourVotes.ToProto(); votes != nil {
+				eMsg.Votes = *votes
+			}
+			e.Src.TrySend(p2p.Envelope{
+				ChannelID: VoteSetBitsChannel,
+				Message:   eMsg,
+			})
 		default:
 			conR.Logger.Error(fmt.Sprintf("Unknown message type %v", reflect.TypeOf(msg)))
 		}

 	case DataChannel:
-		if conR.WaitSync() {
+		if !conR.conS.IsRunning() {
 			conR.Logger.Info("Ignoring message received during sync", "msg", msg)
 			return
 		}
 		switch msg := msg.(type) {
 		case *ProposalMessage:
 			ps.SetHasProposal(msg.Proposal)
-			conR.conS.peerMsgQueue <- msgInfo{msg, src.ID()}
+			conR.conS.peerMsgQueue <- msgInfo{msg, e.Src.ID()}
 		case *ProposalPOLMessage:
 			ps.ApplyProposalPOLMessage(msg)
 		case *BlockPartMessage:
 			ps.SetHasProposalBlockPart(msg.Height, msg.Round, int(msg.Part.Index))
-			conR.Metrics.BlockParts.With("peer_id", string(src.ID())).Add(1)
-			conR.conS.peerMsgQueue <- msgInfo{msg, src.ID()}
+			conR.Metrics.BlockParts.With("peer_id", string(e.Src.ID())).Add(1)
+			conR.conS.peerMsgQueue <- msgInfo{msg, e.Src.ID()}
 		default:
 			conR.Logger.Error(fmt.Sprintf("Unknown message type %v", reflect.TypeOf(msg)))
 		}

 	case VoteChannel:
-		if conR.WaitSync() {
+		if !conR.conS.IsRunning() {
 			conR.Logger.Info("Ignoring message received during sync", "msg", msg)
 			return
 		}
@@ -337,7 +320,7 @@ func (conR *Reactor) Receive(chID byte, src p2p.Peer, msgBytes []byte) {
 			ps.EnsureVoteBitArrays(height-1, lastCommitSize)
 			ps.SetHasVote(msg.Vote)

-			cs.peerMsgQueue <- msgInfo{msg, src.ID()}
+			cs.peerMsgQueue <- msgInfo{msg, e.Src.ID()}

 		default:
 			// don't punish (leave room for soft upgrades)
@@ -345,7 +328,7 @@ func (conR *Reactor) Receive(chID byte, src p2p.Peer, msgBytes []byte) {
 		}

 	case VoteSetBitsChannel:
-		if conR.WaitSync() {
+		if !conR.conS.IsRunning() {
 			conR.Logger.Info("Ignoring message received during sync", "msg", msg)
 			return
 		}
@@ -376,7 +359,7 @@ func (conR *Reactor) Receive(chID byte, src p2p.Peer, msgBytes []byte) {
 		}

 	default:
-		conR.Logger.Error(fmt.Sprintf("Unknown chId %X", chID))
+		conR.Logger.Error(fmt.Sprintf("Unknown chId %X", e.ChannelID))
 	}
 }

@@ -386,13 +369,6 @@ func (conR *Reactor) SetEventBus(b *types.EventBus) {
 	conR.conS.SetEventBus(b)
 }

-// WaitSync returns whether the consensus reactor is waiting for state/block sync.
-func (conR *Reactor) WaitSync() bool {
-	conR.mtx.RLock()
-	defer conR.mtx.RUnlock()
-	return conR.waitSync
-}
-
 //--------------------------------------

 // subscribeToBroadcastEvents subscribes for new round steps and votes
@@ -430,29 +406,39 @@ func (conR *Reactor) unsubscribeFromBroadcastEvents() {

 func (conR *Reactor) broadcastNewRoundStepMessage(rs *cstypes.RoundState) {
 	nrsMsg := makeRoundStepMessage(rs)
-	conR.Switch.Broadcast(StateChannel, MustEncode(nrsMsg))
+	conR.Switch.Broadcast(p2p.Envelope{
+		ChannelID: StateChannel,
+		Message:   nrsMsg,
+	})
 }

 func (conR *Reactor) broadcastNewValidBlockMessage(rs *cstypes.RoundState) {
-	csMsg := &NewValidBlockMessage{
+	psh := rs.ProposalBlockParts.Header()
+	csMsg := &tmcons.NewValidBlock{
 		Height:             rs.Height,
 		Round:              rs.Round,
-		BlockPartSetHeader: rs.ProposalBlockParts.Header(),
-		BlockParts:         rs.ProposalBlockParts.BitArray(),
+		BlockPartSetHeader: psh.ToProto(),
+		BlockParts:         rs.ProposalBlockParts.BitArray().ToProto(),
 		IsCommit:           rs.Step == cstypes.RoundStepCommit,
 	}
-	conR.Switch.Broadcast(StateChannel, MustEncode(csMsg))
+	conR.Switch.Broadcast(p2p.Envelope{
+		ChannelID: StateChannel,
+		Message:   csMsg,
+	})
 }

 // Broadcasts HasVoteMessage to peers that care.
 func (conR *Reactor) broadcastHasVoteMessage(vote *types.Vote) {
-	msg := &HasVoteMessage{
+	msg := &tmcons.HasVote{
 		Height: vote.Height,
 		Round:  vote.Round,
 		Type:   vote.Type,
 		Index:  vote.ValidatorIndex,
 	}
-	conR.Switch.Broadcast(StateChannel, MustEncode(msg))
+	conR.Switch.Broadcast(p2p.Envelope{
+		ChannelID: StateChannel,
+		Message:   msg,
+	})
 	/*
 		// TODO: Make this broadcast more selective.
 		for _, peer := range conR.Switch.Peers().List() {
@@ -463,7 +449,11 @@ func (conR *Reactor) broadcastHasVoteMessage(vote *types.Vote) {
 			prs := ps.GetRoundState()
 			if prs.Height == vote.Height {
 				// TODO: Also filter on round?
-				peer.TrySend(StateChannel, struct{ ConsensusMessage }{msg})
+				e := p2p.Envelope{
+					ChannelID: StateChannel, struct{ ConsensusMessage }{msg},
+					Message: p,
+				}
+				peer.TrySend(e)
 			} else {
 				// Height doesn't match
 				// TODO: check a field, maybe CatchupCommitRound?
@@ -473,11 +463,11 @@ func (conR *Reactor) broadcastHasVoteMessage(vote *types.Vote) {
 	*/
 }

-func makeRoundStepMessage(rs *cstypes.RoundState) (nrsMsg *NewRoundStepMessage) {
-	nrsMsg = &NewRoundStepMessage{
+func makeRoundStepMessage(rs *cstypes.RoundState) (nrsMsg *tmcons.NewRoundStep) {
+	nrsMsg = &tmcons.NewRoundStep{
 		Height:                rs.Height,
 		Round:                 rs.Round,
-		Step:                  rs.Step,
+		Step:                  uint32(rs.Step),
 		SecondsSinceStartTime: int64(time.Since(rs.StartTime).Seconds()),
 		LastCommitRound:       rs.LastCommit.GetRound(),
 	}
@@ -487,7 +477,10 @@ func makeRoundStepMessage(rs *cstypes.RoundState) (nrsMsg *NewRoundStepMessage)
 func (conR *Reactor) sendNewRoundStepMessage(peer p2p.Peer) {
 	rs := conR.getRoundState()
 	nrsMsg := makeRoundStepMessage(rs)
-	peer.Send(StateChannel, MustEncode(nrsMsg))
+	peer.Send(p2p.Envelope{
+		ChannelID: StateChannel,
+		Message:   nrsMsg,
+	})
 }

 func (conR *Reactor) updateRoundStateRoutine() {
@@ -519,6 +512,11 @@ OUTER_LOOP:
 		if !peer.IsRunning() || !conR.IsRunning() {
 			return
 		}
+		if !conR.IsConsensusRunning() {
+			time.Sleep(conR.conS.config.PeerGossipSleepDuration)
+			continue OUTER_LOOP
+		}
+
 		rs := conR.getRoundState()
 		prs := ps.GetRoundState()

@@ -526,13 +524,19 @@ OUTER_LOOP:
 		if rs.ProposalBlockParts.HasHeader(prs.ProposalBlockPartSetHeader) {
 			if index, ok := rs.ProposalBlockParts.BitArray().Sub(prs.ProposalBlockParts.Copy()).PickRandom(); ok {
 				part := rs.ProposalBlockParts.GetPart(index)
-				msg := &BlockPartMessage{
-					Height: rs.Height, // This tells peer that this part applies to us.
-					Round:  rs.Round,  // This tells peer that this part applies to us.
-					Part:   part,
+				parts, err := part.ToProto()
+				if err != nil {
+					panic(err)
 				}
 				logger.Debug("Sending block part", "height", prs.Height, "round", prs.Round)
-				if peer.Send(DataChannel, MustEncode(msg)) {
+				if peer.Send(p2p.Envelope{
+					ChannelID: DataChannel,
+					Message: &tmcons.BlockPart{
+						Height: rs.Height, // This tells peer that this part applies to us.
+						Round:  rs.Round,  // This tells peer that this part applies to us.
+						Part:   *parts,
+					},
+				}) {
 					ps.SetHasProposalBlockPart(prs.Height, prs.Round, index)
 				}
 				continue OUTER_LOOP
@@ -578,9 +582,11 @@ OUTER_LOOP:
 		if rs.Proposal != nil && !prs.Proposal {
 			// Proposal: share the proposal metadata with peer.
 			{
-				msg := &ProposalMessage{Proposal: rs.Proposal}
 				logger.Debug("Sending proposal", "height", prs.Height, "round", prs.Round)
-				if peer.Send(DataChannel, MustEncode(msg)) {
+				if peer.Send(p2p.Envelope{
+					ChannelID: DataChannel,
+					Message:   &tmcons.Proposal{Proposal: *rs.Proposal.ToProto()},
+				}) {
 					// NOTE[ZM]: A peer might have received different proposal msg so this Proposal msg will be rejected!
 					ps.SetHasProposal(rs.Proposal)
 				}
@@ -590,13 +596,15 @@ OUTER_LOOP:
 			// rs.Proposal was validated, so rs.Proposal.POLRound <= rs.Round,
 			// so we definitely have rs.Votes.Prevotes(rs.Proposal.POLRound).
 			if 0 <= rs.Proposal.POLRound {
-				msg := &ProposalPOLMessage{
-					Height:           rs.Height,
-					ProposalPOLRound: rs.Proposal.POLRound,
-					ProposalPOL:      rs.Votes.Prevotes(rs.Proposal.POLRound).BitArray(),
-				}
 				logger.Debug("Sending POL", "height", prs.Height, "round", prs.Round)
-				peer.Send(DataChannel, MustEncode(msg))
+				peer.Send(p2p.Envelope{
+					ChannelID: DataChannel,
+					Message: &tmcons.ProposalPOL{
+						Height:           rs.Height,
+						ProposalPolRound: rs.Proposal.POLRound,
+						ProposalPol:      *rs.Votes.Prevotes(rs.Proposal.POLRound).BitArray().ToProto(),
+					},
+				})
 			}
 			continue OUTER_LOOP
 		}
@@ -633,20 +641,27 @@ func (conR *Reactor) gossipDataForCatchup(logger log.Logger, rs *cstypes.RoundSt
 			return
 		}
 		// Send the part
-		msg := &BlockPartMessage{
-			Height: prs.Height, // Not our height, so it doesn't matter.
-			Round:  prs.Round,  // Not our height, so it doesn't matter.
-			Part:   part,
-		}
 		logger.Debug("Sending block part for catchup", "round", prs.Round, "index", index)
-		if peer.Send(DataChannel, MustEncode(msg)) {
+		pp, err := part.ToProto()
+		if err != nil {
+			logger.Error("Could not convert part to proto", "index", index, "error", err)
+			return
+		}
+		if peer.Send(p2p.Envelope{
+			ChannelID: DataChannel,
+			Message: &tmcons.BlockPart{
+				Height: prs.Height, // Not our height, so it doesn't matter.
+				Round:  prs.Round,  // Not our height, so it doesn't matter.
+				Part:   *pp,
+			},
+		}) {
 			ps.SetHasProposalBlockPart(prs.Height, prs.Round, index)
 		} else {
 			logger.Debug("Sending block part for catchup failed")
 		}
 		return
 	}
-	//  logger.Info("No parts to send in catch-up, sleeping")
+
 	time.Sleep(conR.conS.config.PeerGossipSleepDuration)
 }

@@ -656,12 +671,16 @@ func (conR *Reactor) gossipVotesRoutine(peer p2p.Peer, ps *PeerState) {
 	// Simple hack to throttle logs upon sleep.
 	var sleeping = 0

-OUTER_LOOP:
 	for {
 		// Manage disconnects from self or peer.
 		if !peer.IsRunning() || !conR.IsRunning() {
 			return
 		}
+		if !conR.IsConsensusRunning() {
+			time.Sleep(conR.conS.config.PeerGossipSleepDuration)
+			continue
+		}
+
 		rs := conR.getRoundState()
 		prs := ps.GetRoundState()

@@ -672,14 +691,11 @@ OUTER_LOOP:
 			sleeping = 0
 		}

-		// logger.Debug("gossipVotesRoutine", "rsHeight", rs.Height, "rsRound", rs.Round,
-		// "prsHeight", prs.Height, "prsRound", prs.Round, "prsStep", prs.Step)
-
 		// If height matches, then send LastCommit, Prevotes, Precommits.
 		if rs.Height == prs.Height {
 			heightLogger := logger.With("height", prs.Height)
 			if conR.gossipVotesForHeight(heightLogger, rs, prs, ps) {
-				continue OUTER_LOOP
+				continue
 			}
 		}

@@ -688,7 +704,7 @@ OUTER_LOOP:
 		if prs.Height != 0 && rs.Height == prs.Height+1 {
 			if ps.PickSendVote(rs.LastCommit) {
 				logger.Debug("Picked rs.LastCommit to send", "height", prs.Height)
-				continue OUTER_LOOP
+				continue
 			}
 		}

@@ -701,7 +717,7 @@ OUTER_LOOP:
 			if commit := conR.conS.blockStore.LoadBlockCommit(prs.Height); commit != nil {
 				if ps.PickSendVote(commit) {
 					logger.Debug("Picked Catchup commit to send", "height", prs.Height)
-					continue OUTER_LOOP
+					continue
 				}
 			}
 		}
@@ -718,7 +734,7 @@ OUTER_LOOP:
 		}

 		time.Sleep(conR.conS.config.PeerGossipSleepDuration)
-		continue OUTER_LOOP
+		continue
 	}
 }

@@ -792,18 +808,27 @@ OUTER_LOOP:
 			return
 		}

+		if !conR.IsConsensusRunning() {
+			time.Sleep(conR.conS.config.PeerQueryMaj23SleepDuration)
+			continue OUTER_LOOP
+		}
+
 		// Maybe send Height/Round/Prevotes
 		{
 			rs := conR.getRoundState()
 			prs := ps.GetRoundState()
 			if rs.Height == prs.Height {
 				if maj23, ok := rs.Votes.Prevotes(prs.Round).TwoThirdsMajority(); ok {
-					peer.TrySend(StateChannel, MustEncode(&VoteSetMaj23Message{
-						Height:  prs.Height,
-						Round:   prs.Round,
-						Type:    tmproto.PrevoteType,
-						BlockID: maj23,
-					}))
+
+					peer.TrySend(p2p.Envelope{
+						ChannelID: StateChannel,
+						Message: &tmcons.VoteSetMaj23{
+							Height:  prs.Height,
+							Round:   prs.Round,
+							Type:    tmproto.PrevoteType,
+							BlockID: maj23.ToProto(),
+						},
+					})
 					time.Sleep(conR.conS.config.PeerQueryMaj23SleepDuration)
 				}
 			}
@@ -815,12 +840,15 @@ OUTER_LOOP:
 			prs := ps.GetRoundState()
 			if rs.Height == prs.Height {
 				if maj23, ok := rs.Votes.Precommits(prs.Round).TwoThirdsMajority(); ok {
-					peer.TrySend(StateChannel, MustEncode(&VoteSetMaj23Message{
-						Height:  prs.Height,
-						Round:   prs.Round,
-						Type:    tmproto.PrecommitType,
-						BlockID: maj23,
-					}))
+					peer.TrySend(p2p.Envelope{
+						ChannelID: StateChannel,
+						Message: &tmcons.VoteSetMaj23{
+							Height:  prs.Height,
+							Round:   prs.Round,
+							Type:    tmproto.PrecommitType,
+							BlockID: maj23.ToProto(),
+						},
+					})
 					time.Sleep(conR.conS.config.PeerQueryMaj23SleepDuration)
 				}
 			}
@@ -832,12 +860,16 @@ OUTER_LOOP:
 			prs := ps.GetRoundState()
 			if rs.Height == prs.Height && prs.ProposalPOLRound >= 0 {
 				if maj23, ok := rs.Votes.Prevotes(prs.ProposalPOLRound).TwoThirdsMajority(); ok {
-					peer.TrySend(StateChannel, MustEncode(&VoteSetMaj23Message{
-						Height:  prs.Height,
-						Round:   prs.ProposalPOLRound,
-						Type:    tmproto.PrevoteType,
-						BlockID: maj23,
-					}))
+
+					peer.TrySend(p2p.Envelope{
+						ChannelID: StateChannel,
+						Message: &tmcons.VoteSetMaj23{
+							Height:  prs.Height,
+							Round:   prs.ProposalPOLRound,
+							Type:    tmproto.PrevoteType,
+							BlockID: maj23.ToProto(),
+						},
+					})
 					time.Sleep(conR.conS.config.PeerQueryMaj23SleepDuration)
 				}
 			}
@@ -852,19 +884,20 @@ OUTER_LOOP:
 			if prs.CatchupCommitRound != -1 && prs.Height > 0 && prs.Height <= conR.conS.blockStore.Height() &&
 				prs.Height >= conR.conS.blockStore.Base() {
 				if commit := conR.conS.LoadCommit(prs.Height); commit != nil {
-					peer.TrySend(StateChannel, MustEncode(&VoteSetMaj23Message{
-						Height:  prs.Height,
-						Round:   commit.Round,
-						Type:    tmproto.PrecommitType,
-						BlockID: commit.BlockID,
-					}))
+					peer.TrySend(p2p.Envelope{
+						ChannelID: StateChannel,
+						Message: &tmcons.VoteSetMaj23{
+							Height:  prs.Height,
+							Round:   commit.Round,
+							Type:    tmproto.PrecommitType,
+							BlockID: commit.BlockID.ToProto(),
+						},
+					})
 					time.Sleep(conR.conS.config.PeerQueryMaj23SleepDuration)
 				}
 			}
 		}

-		time.Sleep(conR.conS.config.PeerQueryMaj23SleepDuration)
-
 		continue OUTER_LOOP
 	}
 }
@@ -1071,9 +1104,13 @@ func (ps *PeerState) SetHasProposalBlockPart(height int64, round int32, index in
 // Returns true if vote was sent.
 func (ps *PeerState) PickSendVote(votes types.VoteSetReader) bool {
 	if vote, ok := ps.PickVoteToSend(votes); ok {
-		msg := &VoteMessage{vote}
 		ps.logger.Debug("Sending vote message", "ps", ps, "vote", vote)
-		if ps.peer.Send(VoteChannel, MustEncode(msg)) {
+		if ps.peer.Send(p2p.Envelope{
+			ChannelID: VoteChannel,
+			Message: &tmcons.Vote{
+				Vote: vote.ToProto(),
+			},
+		}) {
 			ps.SetHasVote(vote)
 			return true
 		}
@@ -1439,15 +1476,6 @@ func init() {
 	tmjson.RegisterType(&VoteSetBitsMessage{}, "tendermint/VoteSetBits")
 }

-func decodeMsg(bz []byte) (msg Message, err error) {
-	pb := &tmcons.Message{}
-	if err = proto.Unmarshal(bz, pb); err != nil {
-		return msg, err
-	}
-
-	return MsgFromProto(pb)
-}
-
 //-------------------------------------

 // NewRoundStepMessage is sent for every step taken in the ConsensusState.
--- a/consensus/reactor_test.go
+++ b/consensus/reactor_test.go
@@ -33,6 +33,7 @@ import (
 	mempoolv1 "github.com/tendermint/tendermint/mempool/v1"
 	"github.com/tendermint/tendermint/p2p"
 	p2pmock "github.com/tendermint/tendermint/p2p/mock"
+	tmcons "github.com/tendermint/tendermint/proto/tendermint/consensus"
 	tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
 	sm "github.com/tendermint/tendermint/state"
 	statemocks "github.com/tendermint/tendermint/state/mocks"
@@ -54,9 +55,8 @@ func startConsensusNet(t *testing.T, css []*State, n int) (
 	blocksSubs := make([]types.Subscription, 0)
 	eventBuses := make([]*types.EventBus, n)
 	for i := 0; i < n; i++ {
-		/*logger, err := tmflags.ParseLogLevel("consensus:info,*:error", logger, "info")
-		if err != nil {	t.Fatal(err)}*/
-		reactors[i] = NewReactor(css[i], true) // so we dont start the consensus states
+		// Note, we dont start the consensus states
+		reactors[i] = NewReactor(css[i])
 		reactors[i].SetLogger(css[i].Logger)

 		// eventBus is already started with the cs
@@ -87,7 +87,8 @@ func startConsensusNet(t *testing.T, css []*State, n int) (
 	// TODO: is this still true with new pubsub?
 	for i := 0; i < n; i++ {
 		s := reactors[i].conS.GetState()
-		reactors[i].SwitchToConsensus(s, false)
+		err := reactors[i].SwitchToConsensus(s, false)
+		require.NoError(t, err)
 	}
 	return reactors, blocksSubs, eventBuses
 }
@@ -112,7 +113,7 @@ func stopConsensusNet(logger log.Logger, reactors []*Reactor, eventBuses []*type
 // Ensure a testnet makes blocks
 func TestReactorBasic(t *testing.T) {
 	N := 4
-	css, cleanup := randConsensusNet(N, "consensus_reactor_test", newMockTickerFunc(true), newKVStore)
+	css, cleanup := randConsensusNet(t, N, "consensus_reactor_test", newMockTickerFunc(true), newKVStore)
 	defer cleanup()
 	reactors, blocksSubs, eventBuses := startConsensusNet(t, css, N)
 	defer stopConsensusNet(log.TestingLogger(), reactors, eventBuses)
@@ -134,6 +135,8 @@ func TestReactorWithEvidence(t *testing.T) {
 	// css := randConsensusNet(N, "consensus_reactor_test", newMockTickerFunc(true), newKVStore)

 	genDoc, privVals := randGenesisDoc(nValidators, false, 30)
+	state, err := sm.MakeGenesisState(genDoc)
+	require.NoError(t, err)
 	css := make([]*State, nValidators)
 	logger := consensusLogger()
 	for i := 0; i < nValidators; i++ {
@@ -141,7 +144,6 @@ func TestReactorWithEvidence(t *testing.T) {
 		stateStore := sm.NewStore(stateDB, sm.StoreOptions{
 			DiscardABCIResponses: false,
 		})
-		state, _ := stateStore.LoadFromDBOrGenesisDoc(genDoc)
 		thisConfig := ResetConfig(fmt.Sprintf("%s_%d", testName, i))
 		defer os.RemoveAll(thisConfig.RootDir)
 		ensureDir(path.Dir(thisConfig.Consensus.WalFile()), 0700) // dir for wal
@@ -202,7 +204,7 @@ func TestReactorWithEvidence(t *testing.T) {

 		// Make State
 		blockExec := sm.NewBlockExecutor(stateStore, log.TestingLogger(), proxyAppConnCon, mempool, evpool, blockStore)
-		cs := NewState(thisConfig.Consensus, state, blockExec, blockStore, mempool, evpool2)
+		cs := NewState(thisConfig.Consensus, blockExec, blockStore, mempool, evpool2, WithState(state.Copy()))
 		cs.SetLogger(log.TestingLogger().With("module", "consensus"))
 		cs.SetPrivValidator(pv)

@@ -236,7 +238,7 @@ func TestReactorWithEvidence(t *testing.T) {
 // Ensure a testnet makes blocks when there are txs
 func TestReactorCreatesBlockWhenEmptyBlocksFalse(t *testing.T) {
 	N := 4
-	css, cleanup := randConsensusNet(N, "consensus_reactor_test", newMockTickerFunc(true), newKVStore,
+	css, cleanup := randConsensusNet(t, N, "consensus_reactor_test", newMockTickerFunc(true), newKVStore,
 		func(c *cfg.Config) {
 			c.Consensus.CreateEmptyBlocks = false
 		})
@@ -257,7 +259,7 @@ func TestReactorCreatesBlockWhenEmptyBlocksFalse(t *testing.T) {

 func TestReactorReceiveDoesNotPanicIfAddPeerHasntBeenCalledYet(t *testing.T) {
 	N := 1
-	css, cleanup := randConsensusNet(N, "consensus_reactor_test", newMockTickerFunc(true), newKVStore)
+	css, cleanup := randConsensusNet(t, N, "consensus_reactor_test", newMockTickerFunc(true), newKVStore)
 	defer cleanup()
 	reactors, _, eventBuses := startConsensusNet(t, css, N)
 	defer stopConsensusNet(log.TestingLogger(), reactors, eventBuses)
@@ -265,22 +267,25 @@ func TestReactorReceiveDoesNotPanicIfAddPeerHasntBeenCalledYet(t *testing.T) {
 	var (
 		reactor = reactors[0]
 		peer    = p2pmock.NewPeer(nil)
-		msg     = MustEncode(&HasVoteMessage{Height: 1,
-			Round: 1, Index: 1, Type: tmproto.PrevoteType})
 	)

 	reactor.InitPeer(peer)

 	// simulate switch calling Receive before AddPeer
 	assert.NotPanics(t, func() {
-		reactor.Receive(StateChannel, peer, msg)
+		reactor.Receive(p2p.Envelope{
+			ChannelID: StateChannel,
+			Src:       peer,
+			Message: &tmcons.HasVote{Height: 1,
+				Round: 1, Index: 1, Type: tmproto.PrevoteType},
+		})
 		reactor.AddPeer(peer)
 	})
 }

 func TestReactorReceivePanicsIfInitPeerHasntBeenCalledYet(t *testing.T) {
 	N := 1
-	css, cleanup := randConsensusNet(N, "consensus_reactor_test", newMockTickerFunc(true), newKVStore)
+	css, cleanup := randConsensusNet(t, N, "consensus_reactor_test", newMockTickerFunc(true), newKVStore)
 	defer cleanup()
 	reactors, _, eventBuses := startConsensusNet(t, css, N)
 	defer stopConsensusNet(log.TestingLogger(), reactors, eventBuses)
@@ -288,22 +293,25 @@ func TestReactorReceivePanicsIfInitPeerHasntBeenCalledYet(t *testing.T) {
 	var (
 		reactor = reactors[0]
 		peer    = p2pmock.NewPeer(nil)
-		msg     = MustEncode(&HasVoteMessage{Height: 1,
-			Round: 1, Index: 1, Type: tmproto.PrevoteType})
 	)

 	// we should call InitPeer here

 	// simulate switch calling Receive before AddPeer
 	assert.Panics(t, func() {
-		reactor.Receive(StateChannel, peer, msg)
+		reactor.Receive(p2p.Envelope{
+			ChannelID: StateChannel,
+			Src:       peer,
+			Message: &tmcons.HasVote{Height: 1,
+				Round: 1, Index: 1, Type: tmproto.PrevoteType},
+		})
 	})
 }

 // Test we record stats about votes and block parts from other peers.
 func TestReactorRecordsVotesAndBlockParts(t *testing.T) {
 	N := 4
-	css, cleanup := randConsensusNet(N, "consensus_reactor_test", newMockTickerFunc(true), newKVStore)
+	css, cleanup := randConsensusNet(t, N, "consensus_reactor_test", newMockTickerFunc(true), newKVStore)
 	defer cleanup()
 	reactors, blocksSubs, eventBuses := startConsensusNet(t, css, N)
 	defer stopConsensusNet(log.TestingLogger(), reactors, eventBuses)
@@ -329,6 +337,7 @@ func TestReactorVotingPowerChange(t *testing.T) {
 	nVals := 4
 	logger := log.TestingLogger()
 	css, cleanup := randConsensusNet(
+		t,
 		nVals,
 		"consensus_voting_power_changes_test",
 		newMockTickerFunc(true),
@@ -524,7 +533,7 @@ func TestReactorValidatorSetChanges(t *testing.T) {
 // Check we can make blocks with skip_timeout_commit=false
 func TestReactorWithTimeoutCommit(t *testing.T) {
 	N := 4
-	css, cleanup := randConsensusNet(N, "consensus_reactor_with_timeout_commit_test", newMockTickerFunc(false), newKVStore)
+	css, cleanup := randConsensusNet(t, N, "consensus_reactor_with_timeout_commit_test", newMockTickerFunc(false), newKVStore)
 	defer cleanup()
 	// override default SkipTimeoutCommit == true for tests
 	for i := 0; i < N; i++ {
--- a/consensus/replay_file.go
+++ b/consensus/replay_file.go
@@ -129,8 +129,8 @@ func (pb *playback) replayReset(count int, newStepSub types.Subscription) error
 	}
 	pb.cs.Wait()

-	newCS := NewState(pb.cs.config, pb.genesisState.Copy(), pb.cs.blockExec,
-		pb.cs.blockStore, pb.cs.txNotifier, pb.cs.evpool)
+	newCS := NewState(pb.cs.config, pb.cs.blockExec,
+		pb.cs.blockStore, pb.cs.txNotifier, pb.cs.evpool, WithState(pb.genesisState.Copy()))
 	newCS.SetEventBus(pb.cs.eventBus)
 	newCS.startForReplay()

@@ -332,8 +332,8 @@ func newConsensusStateForReplay(config cfg.BaseConfig, csConfig *cfg.ConsensusCo
 	mempool, evpool := emptyMempool{}, sm.EmptyEvidencePool{}
 	blockExec := sm.NewBlockExecutor(stateStore, log.TestingLogger(), proxyApp.Consensus(), mempool, evpool, blockStore)

-	consensusState := NewState(csConfig, state.Copy(), blockExec,
-		blockStore, mempool, evpool)
+	consensusState := NewState(csConfig, blockExec,
+		blockStore, mempool, evpool, WithState(state.Copy()))

 	consensusState.SetEventBus(eventBus)
 	return consensusState
--- a/consensus/replay_test.go
+++ b/consensus/replay_test.go
@@ -67,7 +67,8 @@ func TestMain(m *testing.M) {
 func startNewStateAndWaitForBlock(t *testing.T, consensusReplayConfig *cfg.Config,
 	lastBlockHeight int64, blockDB dbm.DB, stateStore sm.Store) {
 	logger := log.TestingLogger()
-	state, _ := stateStore.LoadFromDBOrGenesisFile(consensusReplayConfig.GenesisFile())
+	state, err := stateStore.LoadFromDBOrGenesisFile(consensusReplayConfig.GenesisFile())
+	require.NoError(t, err)
 	privValidator := loadPrivValidator(consensusReplayConfig)
 	cs := newStateWithConfigAndBlockStore(
 		consensusReplayConfig,
@@ -81,7 +82,7 @@ func startNewStateAndWaitForBlock(t *testing.T, consensusReplayConfig *cfg.Confi
 	bytes, _ := os.ReadFile(cs.config.WalFile())
 	t.Logf("====== WAL: \n\r%X\n", bytes)

-	err := cs.Start()
+	err = cs.Start()
 	require.NoError(t, err)
 	defer func() {
 		if err := cs.Stop(); err != nil {
@@ -555,40 +556,40 @@ func TestSimulateValidatorsChange(t *testing.T) {
 // Sync from scratch
 func TestHandshakeReplayAll(t *testing.T) {
 	for _, m := range modes {
-		testHandshakeReplay(t, config, 0, m, false)
+		testHandshakeReplay(t, 0, m, false)
 	}
 	for _, m := range modes {
-		testHandshakeReplay(t, config, 0, m, true)
+		testHandshakeReplay(t, 0, m, true)
 	}
 }

 // Sync many, not from scratch
 func TestHandshakeReplaySome(t *testing.T) {
 	for _, m := range modes {
-		testHandshakeReplay(t, config, 2, m, false)
+		testHandshakeReplay(t, 2, m, false)
 	}
 	for _, m := range modes {
-		testHandshakeReplay(t, config, 2, m, true)
+		testHandshakeReplay(t, 2, m, true)
 	}
 }

 // Sync from lagging by one
 func TestHandshakeReplayOne(t *testing.T) {
 	for _, m := range modes {
-		testHandshakeReplay(t, config, numBlocks-1, m, false)
+		testHandshakeReplay(t, numBlocks-1, m, false)
 	}
 	for _, m := range modes {
-		testHandshakeReplay(t, config, numBlocks-1, m, true)
+		testHandshakeReplay(t, numBlocks-1, m, true)
 	}
 }

 // Sync from caught up
 func TestHandshakeReplayNone(t *testing.T) {
 	for _, m := range modes {
-		testHandshakeReplay(t, config, numBlocks, m, false)
+		testHandshakeReplay(t, numBlocks, m, false)
 	}
 	for _, m := range modes {
-		testHandshakeReplay(t, config, numBlocks, m, true)
+		testHandshakeReplay(t, numBlocks, m, true)
 	}
 }

@@ -660,25 +661,27 @@ func tempWALWithData(data []byte) string {

 // Make some blocks. Start a fresh app and apply nBlocks blocks.
 // Then restart the app and sync it up with the remaining blocks
-func testHandshakeReplay(t *testing.T, config *cfg.Config, nBlocks int, mode uint, testValidatorsChange bool) {
-	var chain []*types.Block
-	var commits []*types.Commit
-	var store *mockBlockStore
-	var stateDB dbm.DB
-	var genesisState sm.State
+func testHandshakeReplay(t *testing.T, nBlocks int, mode uint, testValidatorsChange bool) {
+	var (
+		chain        []*types.Block
+		commits      []*types.Commit
+		store        *mockBlockStore
+		stateDB      dbm.DB
+		genesisState sm.State
+		config       *cfg.Config
+	)
 	if testValidatorsChange {
-		testConfig := ResetConfig(fmt.Sprintf("%s_%v_m", t.Name(), mode))
-		defer os.RemoveAll(testConfig.RootDir)
+		config = ResetConfig(fmt.Sprintf("%s_%v_m", t.Name(), mode))
+		defer os.RemoveAll(config.RootDir)
 		stateDB = dbm.NewMemDB()

 		genesisState = sim.GenesisState
-		config = sim.Config
 		chain = append([]*types.Block{}, sim.Chain...) // copy chain
 		commits = sim.Commits
 		store = newMockBlockStore(t, config, genesisState.ConsensusParams)
 	} else { // test single node
-		testConfig := ResetConfig(fmt.Sprintf("%s_%v_s", t.Name(), mode))
-		defer os.RemoveAll(testConfig.RootDir)
+		config = ResetConfig(fmt.Sprintf("%s_%v_s", t.Name(), mode))
+		defer os.RemoveAll(config.RootDir)
 		walBody, err := WALWithNBlocks(t, numBlocks)
 		require.NoError(t, err)
 		walFile := tempWALWithData(walBody)
@@ -811,14 +814,11 @@ func buildAppStateFromChain(t *testing.T, proxyApp proxy.AppConns, stateStore sm

 	state.Version.Consensus.App = kvstore.ProtocolVersion // simulate handshake, receive app version
 	validators := types.TM2PB.ValidatorUpdates(state.Validators)
-	if _, err := proxyApp.Consensus().InitChainSync(abci.RequestInitChain{
+	_, err := proxyApp.Consensus().InitChainSync(abci.RequestInitChain{
 		Validators: validators,
-	}); err != nil {
-		panic(err)
-	}
-	if err := stateStore.Save(state); err != nil { // save height 1's validatorsInfo
-		panic(err)
-	}
+	})
+	require.NoError(t, err)
+	require.NoError(t, stateStore.Save(state))
 	switch mode {
 	case 0:
 		for i := 0; i < nBlocks; i++ {
--- a/consensus/state.go
+++ b/consensus/state.go
@@ -148,7 +148,6 @@ type StateOption func(*State)
 // NewState returns a new State.
 func NewState(
 	config *cfg.ConsensusConfig,
-	state sm.State,
 	blockExec *sm.BlockExecutor,
 	blockStore sm.BlockStore,
 	txNotifier txNotifier,
@@ -177,13 +176,6 @@ func NewState(
 	cs.doPrevote = cs.defaultDoPrevote
 	cs.setProposal = cs.defaultSetProposal

-	// We have no votes, so reconstruct LastCommit from SeenCommit.
-	if state.LastBlockHeight > 0 {
-		cs.reconstructLastCommit(state)
-	}
-
-	cs.updateToState(state)
-
 	// NOTE: we do not call scheduleRound0 yet, we do that upon Start()

 	cs.BaseService = *service.NewBaseService(nil, "State", cs)
@@ -207,10 +199,19 @@ func (cs *State) SetEventBus(b *types.EventBus) {
 }

 // StateMetrics sets the metrics.
-func StateMetrics(metrics *Metrics) StateOption {
+func WithMetrics(metrics *Metrics) StateOption {
 	return func(cs *State) { cs.metrics = metrics }
 }

+func WithState(state sm.State) StateOption {
+	return func(cs *State) {
+		if state.LastBlockHeight > 0 {
+			cs.reconstructLastCommit(state)
+		}
+		cs.updateToState(state)
+	}
+}
+
 // String returns a string.
 func (cs *State) String() string {
 	// better not to access shared variables
@@ -297,6 +298,10 @@ func (cs *State) LoadCommit(height int64) *types.Commit {
 // OnStart loads the latest state via the WAL, and starts the timeout and
 // receive routines.
 func (cs *State) OnStart() error {
+	if cs.state.IsEmpty() {
+		return errors.New("no state to commence consensus on")
+	}
+
 	// We may set the WAL in testing before calling Start, so only OpenWAL if its
 	// still the nilWAL.
 	if _, ok := cs.wal.(nilWAL); ok {
@@ -612,7 +617,7 @@ func (cs *State) updateToState(state sm.State) {
 		// signal the new round step, because other services (eg. txNotifier)
 		// depend on having an up-to-date peer state!
 		if state.LastBlockHeight <= cs.state.LastBlockHeight {
-			cs.Logger.Debug(
+			cs.Logger.Info(
 				"ignoring updateToState()",
 				"new_height", state.LastBlockHeight+1,
 				"old_height", cs.state.LastBlockHeight+1,
@@ -2275,11 +2280,10 @@ func (cs *State) signAddVote(msgType tmproto.SignedMsgType, hash []byte, header
 		return nil
 	}

-	// TODO: pass pubKey to signVote
 	vote, err := cs.signVote(msgType, hash, header)
 	if err == nil {
 		cs.sendInternalMessage(msgInfo{&VoteMessage{vote}, ""})
-		cs.Logger.Debug("signed and pushed vote", "height", cs.Height, "round", cs.Round, "vote", vote)
+		cs.Logger.Info("signed and pushed vote", "height", cs.Height, "round", cs.Round, "vote", vote)
 		return vote
 	}

--- a/consensus/types/height_vote_set.go
+++ b/consensus/types/height_vote_set.go
@@ -121,7 +121,7 @@ func (hvs *HeightVoteSet) AddVote(vote *types.Vote, peerID p2p.ID) (added bool,
 		return
 	}
 	voteSet := hvs.getVoteSet(vote.Round, vote.Type)
-	if voteSet == nil {
+	if voteSet.IsEmpty() {
 		if rndz := hvs.peerCatchupRounds[peerID]; len(rndz) < 2 {
 			hvs.addRound(vote.Round)
 			voteSet = hvs.getVoteSet(vote.Round, vote.Type)
@@ -166,7 +166,7 @@ func (hvs *HeightVoteSet) POLInfo() (polRound int32, polBlockID types.BlockID) {
 func (hvs *HeightVoteSet) getVoteSet(round int32, voteType tmproto.SignedMsgType) *types.VoteSet {
 	rvs, ok := hvs.roundVoteSets[round]
 	if !ok {
-		return nil
+		return &types.VoteSet{}
 	}
 	switch voteType {
 	case tmproto.PrevoteType:
--- a/consensus/types/height_vote_set_test.go
+++ b/consensus/types/height_vote_set_test.go
@@ -5,6 +5,7 @@ import (
 	"os"
 	"testing"

+	"github.com/stretchr/testify/require"
 	cfg "github.com/tendermint/tendermint/config"
 	"github.com/tendermint/tendermint/crypto/tmhash"
 	"github.com/tendermint/tendermint/internal/test"
@@ -30,30 +31,23 @@ func TestPeerCatchupRounds(t *testing.T) {

 	vote999_0 := makeVoteHR(t, 1, 0, 999, privVals)
 	added, err := hvs.AddVote(vote999_0, "peer1")
-	if !added || err != nil {
-		t.Error("Expected to successfully add vote from peer", added, err)
-	}
+	require.NoError(t, err)
+	require.True(t, added)

 	vote1000_0 := makeVoteHR(t, 1, 0, 1000, privVals)
 	added, err = hvs.AddVote(vote1000_0, "peer1")
-	if !added || err != nil {
-		t.Error("Expected to successfully add vote from peer", added, err)
-	}
+	require.NoError(t, err)
+	require.True(t, added)

 	vote1001_0 := makeVoteHR(t, 1, 0, 1001, privVals)
 	added, err = hvs.AddVote(vote1001_0, "peer1")
-	if err != ErrGotVoteFromUnwantedRound {
-		t.Errorf("expected GotVoteFromUnwantedRoundError, but got %v", err)
-	}
-	if added {
-		t.Error("Expected to *not* add vote from peer, too many catchup rounds.")
-	}
+	require.Error(t, err)
+	require.Equal(t, ErrGotVoteFromUnwantedRound, err)
+	require.False(t, added)

 	added, err = hvs.AddVote(vote1001_0, "peer2")
-	if !added || err != nil {
-		t.Error("Expected to successfully add vote from another peer")
-	}
-
+	require.NoError(t, err)
+	require.True(t, added)
 }

 func makeVoteHR(t *testing.T, height int64, valIndex, round int32, privVals []types.PrivValidator) *types.Vote {
--- a/consensus/wal_generator.go
+++ b/consensus/wal_generator.go
@@ -86,7 +86,7 @@ func WALGenerateNBlocks(t *testing.T, wr io.Writer, numBlocks int) (err error) {
 	mempool := emptyMempool{}
 	evpool := sm.EmptyEvidencePool{}
 	blockExec := sm.NewBlockExecutor(stateStore, log.TestingLogger(), proxyApp.Consensus(), mempool, evpool, blockStore)
-	consensusState := NewState(config.Consensus, state.Copy(), blockExec, blockStore, mempool, evpool)
+	consensusState := NewState(config.Consensus, blockExec, blockStore, mempool, evpool, WithState(state.Copy()))
 	consensusState.SetLogger(logger)
 	consensusState.SetEventBus(eventBus)
 	if privValidator != nil {
--- a/evidence/reactor.go
+++ b/evidence/reactor.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"time"

+	"github.com/cosmos/gogoproto/proto"
 	clist "github.com/tendermint/tendermint/libs/clist"
 	"github.com/tendermint/tendermint/libs/log"
 	"github.com/tendermint/tendermint/p2p"
@@ -55,6 +56,7 @@ func (evR *Reactor) GetChannels() []*p2p.ChannelDescriptor {
 			ID:                  EvidenceChannel,
 			Priority:            6,
 			RecvMessageCapacity: maxMsgSize,
+			MessageType:         &tmproto.EvidenceList{},
 		},
 	}
 }
@@ -66,11 +68,11 @@ func (evR *Reactor) AddPeer(peer p2p.Peer) {

 // Receive implements Reactor.
 // It adds any received evidence to the evpool.
-func (evR *Reactor) Receive(chID byte, src p2p.Peer, msgBytes []byte) {
-	evis, err := decodeMsg(msgBytes)
+func (evR *Reactor) Receive(e p2p.Envelope) {
+	evis, err := evidenceListFromProto(e.Message)
 	if err != nil {
-		evR.Logger.Error("Error decoding message", "src", src, "chId", chID, "err", err)
-		evR.Switch.StopPeerForError(src, err)
+		evR.Logger.Error("Error decoding message", "src", e.Src, "chId", e.ChannelID, "err", err)
+		evR.Switch.StopPeerForError(e.Src, err)
 		return
 	}

@@ -80,7 +82,7 @@ func (evR *Reactor) Receive(chID byte, src p2p.Peer, msgBytes []byte) {
 		case *types.ErrInvalidEvidence:
 			evR.Logger.Error(err.Error())
 			// punish peer
-			evR.Switch.StopPeerForError(src, err)
+			evR.Switch.StopPeerForError(e.Src, err)
 			return
 		case nil:
 		default:
@@ -126,11 +128,15 @@ func (evR *Reactor) broadcastEvidenceRoutine(peer p2p.Peer) {
 		evis := evR.prepareEvidenceMessage(peer, ev)
 		if len(evis) > 0 {
 			evR.Logger.Debug("Gossiping evidence to peer", "ev", ev, "peer", peer)
-			msgBytes, err := encodeMsg(evis)
+			evp, err := evidenceListToProto(evis)
 			if err != nil {
 				panic(err)
 			}
-			success := peer.Send(EvidenceChannel, msgBytes)
+
+			success := peer.Send(p2p.Envelope{
+				ChannelID: EvidenceChannel,
+				Message:   evp,
+			})
 			if !success {
 				time.Sleep(peerRetryMessageIntervalMS * time.Millisecond)
 				continue
@@ -210,7 +216,7 @@ type PeerState interface {

 // encodemsg takes a array of evidence
 // returns the byte encoding of the List Message
-func encodeMsg(evis []types.Evidence) ([]byte, error) {
+func evidenceListToProto(evis []types.Evidence) (*tmproto.EvidenceList, error) {
 	evi := make([]tmproto.Evidence, len(evis))
 	for i := 0; i < len(evis); i++ {
 		ev, err := types.EvidenceToProto(evis[i])
@@ -222,19 +228,13 @@ func encodeMsg(evis []types.Evidence) ([]byte, error) {
 	epl := tmproto.EvidenceList{
 		Evidence: evi,
 	}
-
-	return epl.Marshal()
+	return &epl, nil
 }

-// decodemsg takes an array of bytes
-// returns an array of evidence
-func decodeMsg(bz []byte) (evis []types.Evidence, err error) {
-	lm := tmproto.EvidenceList{}
-	if err := lm.Unmarshal(bz); err != nil {
-		return nil, err
-	}
+func evidenceListFromProto(m proto.Message) ([]types.Evidence, error) {
+	lm := m.(*tmproto.EvidenceList)

-	evis = make([]types.Evidence, len(lm.Evidence))
+	evis := make([]types.Evidence, len(lm.Evidence))
 	for i := 0; i < len(lm.Evidence); i++ {
 		ev, err := types.EvidenceFromProto(&lm.Evidence[i])
 		if err != nil {
--- a/evidence/reactor_test.go
+++ b/evidence/reactor_test.go
@@ -208,7 +208,10 @@ func TestReactorBroadcastEvidenceMemoryLeak(t *testing.T) {
 	// i.e. broadcastEvidenceRoutine finishes when peer is stopped
 	defer leaktest.CheckTimeout(t, 10*time.Second)()

-	p.On("Send", evidence.EvidenceChannel, mock.AnythingOfType("[]uint8")).Return(false)
+	p.On("Send", mock.MatchedBy(func(i interface{}) bool {
+		e, ok := i.(p2p.Envelope)
+		return ok && e.ChannelID == evidence.EvidenceChannel
+	})).Return(false)
 	quitChan := make(<-chan struct{})
 	p.On("Quit").Return(quitChan)
 	ps := peerState{2}
--- a/go.mod
+++ b/go.mod
@@ -11,7 +11,7 @@ require (
 	github.com/go-kit/log v0.2.1
 	github.com/go-logfmt/logfmt v0.5.1
 	github.com/golang/protobuf v1.5.2
-	github.com/golangci/golangci-lint v1.49.0
+	github.com/golangci/golangci-lint v1.50.1
 	github.com/google/orderedcode v0.0.1
 	github.com/gorilla/websocket v1.5.0
 	github.com/informalsystems/tm-load-test v1.0.0
@@ -22,41 +22,42 @@ require (
 	github.com/pkg/errors v0.9.1
 	github.com/pointlander/peg v1.0.1
 	github.com/prometheus/client_golang v1.13.0
-	github.com/prometheus/client_model v0.2.0
+	github.com/prometheus/client_model v0.3.0
 	github.com/prometheus/common v0.37.0
 	github.com/rcrowley/go-metrics v0.0.0-20201227073835-cf1acfcdf475
 	github.com/rs/cors v1.8.2
 	github.com/sasha-s/go-deadlock v0.3.1
 	github.com/snikch/goodman v0.0.0-20171125024755-10e37e294daa
-	github.com/spf13/cobra v1.6.0
+	github.com/spf13/cobra v1.6.1
 	github.com/spf13/viper v1.13.0
-	github.com/stretchr/testify v1.8.0
+	github.com/stretchr/testify v1.8.1
 	github.com/tendermint/tm-db v0.6.6
-	golang.org/x/crypto v0.0.0-20220722155217-630584e8d5aa
-	golang.org/x/net v0.0.0-20220812174116-3211cb980234
+	golang.org/x/crypto v0.1.0
+	golang.org/x/net v0.1.0
 	google.golang.org/grpc v1.50.1
 )

 require (
-	github.com/bufbuild/buf v1.8.0
+	github.com/bufbuild/buf v1.9.0
 	github.com/creachadair/taskgroup v0.3.2
 	github.com/syndtr/goleveldb v1.0.1-0.20210819022825-2ae1ddf74ef7
 )

 require (
-	github.com/btcsuite/btcd/btcec/v2 v2.2.1
+	github.com/btcsuite/btcd/btcec/v2 v2.3.0
 	github.com/btcsuite/btcd/btcutil v1.1.2
 	github.com/cosmos/gogoproto v1.4.2
 	github.com/gofrs/uuid v4.3.0+incompatible
 	github.com/google/uuid v1.3.0
 	github.com/oasisprotocol/curve25519-voi v0.0.0-20220708102147-0a8a51822cae
-	github.com/vektra/mockery/v2 v2.14.0
+	github.com/vektra/mockery/v2 v2.14.1
 	gonum.org/v1/gonum v0.12.0
-	google.golang.org/protobuf v1.28.1
+	google.golang.org/protobuf v1.28.2-0.20220831092852-f930b1dc76e8
 )

 require (
 	4d63.com/gochecknoglobals v0.1.0 // indirect
+	github.com/Abirdcfly/dupword v0.0.7 // indirect
 	github.com/Antonboom/errname v0.1.7 // indirect
 	github.com/Antonboom/nilnil v0.1.1 // indirect
 	github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 // indirect
@@ -64,9 +65,9 @@ require (
 	github.com/Djarvur/go-err113 v0.0.0-20210108212216-aea10b59be24 // indirect
 	github.com/GaijinEntertainment/go-exhaustruct/v2 v2.3.0 // indirect
 	github.com/Masterminds/semver v1.5.0 // indirect
-	github.com/Microsoft/go-winio v0.5.2 // indirect
+	github.com/Microsoft/go-winio v0.6.0 // indirect
 	github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5 // indirect
-	github.com/OpenPeeDeeP/depguard v1.1.0 // indirect
+	github.com/OpenPeeDeeP/depguard v1.1.1 // indirect
 	github.com/alexkohler/prealloc v1.0.0 // indirect
 	github.com/alingse/asasalint v0.0.11 // indirect
 	github.com/ashanbrown/forbidigo v1.3.0 // indirect
@@ -77,7 +78,8 @@ require (
 	github.com/bombsimon/wsl/v3 v3.3.0 // indirect
 	github.com/breml/bidichk v0.2.3 // indirect
 	github.com/breml/errchkjson v0.3.0 // indirect
-	github.com/bufbuild/connect-go v0.4.0 // indirect
+	github.com/bufbuild/connect-go v1.0.0 // indirect
+	github.com/bufbuild/protocompile v0.1.0 // indirect
 	github.com/butuzov/ireturn v0.1.1 // indirect
 	github.com/cespare/xxhash v1.1.0 // indirect
 	github.com/cespare/xxhash/v2 v2.1.2 // indirect
@@ -87,8 +89,8 @@ require (
 	github.com/containerd/continuity v0.3.0 // indirect
 	github.com/containerd/typeurl v1.0.2 // indirect
 	github.com/cpuguy83/go-md2man/v2 v2.0.2 // indirect
-	github.com/curioswitch/go-reassign v0.1.2 // indirect
-	github.com/daixiang0/gci v0.6.3 // indirect
+	github.com/curioswitch/go-reassign v0.2.0 // indirect
+	github.com/daixiang0/gci v0.8.1 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 // indirect
 	github.com/denis-tingaikin/go-header v0.4.3 // indirect
@@ -96,9 +98,9 @@ require (
 	github.com/dgraph-io/ristretto v0.0.3-0.20200630154024-f66de99634de // indirect
 	github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2 // indirect
 	github.com/docker/distribution v2.8.1+incompatible // indirect
-	github.com/docker/docker v20.10.17+incompatible // indirect
+	github.com/docker/docker v20.10.19+incompatible // indirect
 	github.com/docker/go-connections v0.4.0 // indirect
-	github.com/docker/go-units v0.4.0 // indirect
+	github.com/docker/go-units v0.5.0 // indirect
 	github.com/dustin/go-humanize v1.0.0 // indirect
 	github.com/esimonov/ifshort v1.0.4 // indirect
 	github.com/ettle/strcase v0.1.1 // indirect
@@ -108,12 +110,12 @@ require (
 	github.com/fsnotify/fsnotify v1.5.4 // indirect
 	github.com/fzipp/gocyclo v0.6.0 // indirect
 	github.com/go-chi/chi/v5 v5.0.7 // indirect
-	github.com/go-critic/go-critic v0.6.4 // indirect
+	github.com/go-critic/go-critic v0.6.5 // indirect
 	github.com/go-logr/logr v1.2.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-toolsmith/astcast v1.0.0 // indirect
-	github.com/go-toolsmith/astcopy v1.0.1 // indirect
-	github.com/go-toolsmith/astequal v1.0.2 // indirect
+	github.com/go-toolsmith/astcopy v1.0.2 // indirect
+	github.com/go-toolsmith/astequal v1.0.3 // indirect
 	github.com/go-toolsmith/astfmt v1.0.0 // indirect
 	github.com/go-toolsmith/astp v1.0.0 // indirect
 	github.com/go-toolsmith/strparse v1.0.0 // indirect
@@ -127,14 +129,14 @@ require (
 	github.com/golangci/check v0.0.0-20180506172741-cfe4005ccda2 // indirect
 	github.com/golangci/dupl v0.0.0-20180902072040-3e9179ac440a // indirect
 	github.com/golangci/go-misc v0.0.0-20220329215616-d24fe342adfe // indirect
-	github.com/golangci/gofmt v0.0.0-20190930125516-244bba706f1a // indirect
+	github.com/golangci/gofmt v0.0.0-20220901101216-f2edd75033f2 // indirect
 	github.com/golangci/lint-1 v0.0.0-20191013205115-297bf364a8e0 // indirect
 	github.com/golangci/maligned v0.0.0-20180506175553-b1d89398deca // indirect
 	github.com/golangci/misspell v0.3.5 // indirect
 	github.com/golangci/revgrep v0.0.0-20220804021717-745bb2f7c2e6 // indirect
 	github.com/golangci/unconvert v0.0.0-20180507085042-28b1c447d1f4 // indirect
 	github.com/google/btree v1.0.0 // indirect
-	github.com/google/go-cmp v0.5.8 // indirect
+	github.com/google/go-cmp v0.5.9 // indirect
 	github.com/gordonklaus/ineffassign v0.0.0-20210914165742-4cc7213b9bc8 // indirect
 	github.com/gostaticanalysis/analysisutil v0.7.1 // indirect
 	github.com/gostaticanalysis/comment v1.4.2 // indirect
@@ -149,15 +151,14 @@ require (
 	github.com/inconshreveable/mousetrap v1.0.1 // indirect
 	github.com/jdxcode/netrc v0.0.0-20210204082910-926c7f70242a // indirect
 	github.com/jgautheron/goconst v1.5.1 // indirect
-	github.com/jhump/protocompile v0.0.0-20220812162104-d108583e055d // indirect
-	github.com/jhump/protoreflect v1.12.1-0.20220721211354-060cc04fc18b // indirect
 	github.com/jingyugao/rowserrcheck v1.1.1 // indirect
 	github.com/jirfag/go-printf-func-name v0.0.0-20200119135958-7558a9eaa5af // indirect
 	github.com/jmhodges/levigo v1.0.0 // indirect
 	github.com/julz/importas v0.1.0 // indirect
 	github.com/kisielk/errcheck v1.6.2 // indirect
 	github.com/kisielk/gotool v1.0.0 // indirect
-	github.com/klauspost/compress v1.15.9 // indirect
+	github.com/kkHAIKE/contextcheck v1.1.3 // indirect
+	github.com/klauspost/compress v1.15.11 // indirect
 	github.com/klauspost/pgzip v1.2.5 // indirect
 	github.com/kulti/thelper v0.6.3 // indirect
 	github.com/kunwardeep/paralleltest v1.0.6 // indirect
@@ -167,6 +168,7 @@ require (
 	github.com/leonklingele/grouper v1.1.0 // indirect
 	github.com/lufeee/execinquery v1.2.1 // indirect
 	github.com/magiconair/properties v1.8.6 // indirect
+	github.com/maratori/testableexamples v1.0.0 // indirect
 	github.com/maratori/testpackage v1.1.0 // indirect
 	github.com/matoous/godox v0.0.0-20210227103229-6504466cf951 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
@@ -174,20 +176,20 @@ require (
 	github.com/mattn/go-runewidth v0.0.9 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182affec369 // indirect
 	github.com/mbilski/exhaustivestruct v1.2.0 // indirect
-	github.com/mgechev/revive v1.2.3 // indirect
+	github.com/mgechev/revive v1.2.4 // indirect
 	github.com/mitchellh/go-homedir v1.1.0 // indirect
 	github.com/mitchellh/mapstructure v1.5.0 // indirect
-	github.com/moby/buildkit v0.10.3 // indirect
+	github.com/moby/buildkit v0.10.4 // indirect
 	github.com/moby/term v0.0.0-20220808134915-39b0c02b01ae // indirect
 	github.com/moricho/tparallel v0.2.1 // indirect
 	github.com/morikuni/aec v1.0.0 // indirect
 	github.com/nakabonne/nestif v0.3.1 // indirect
 	github.com/nbutton23/zxcvbn-go v0.0.0-20210217022336-fa2cb2858354 // indirect
-	github.com/nishanths/exhaustive v0.8.1 // indirect
+	github.com/nishanths/exhaustive v0.8.3 // indirect
 	github.com/nishanths/predeclared v0.2.2 // indirect
 	github.com/olekukonko/tablewriter v0.0.5 // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
-	github.com/opencontainers/image-spec v1.0.3-0.20211202183452-c5a74bcca799 // indirect
+	github.com/opencontainers/image-spec v1.1.0-rc2 // indirect
 	github.com/opencontainers/runc v1.1.3 // indirect
 	github.com/pelletier/go-toml v1.9.5 // indirect
 	github.com/pelletier/go-toml/v2 v2.0.5 // indirect
@@ -198,10 +200,10 @@ require (
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/pointlander/compress v1.1.1-0.20190518213731-ff44bd196cc3 // indirect
 	github.com/pointlander/jetset v1.0.1-0.20190518214125-eee7eff80bd4 // indirect
-	github.com/polyfloyd/go-errorlint v1.0.2 // indirect
+	github.com/polyfloyd/go-errorlint v1.0.5 // indirect
 	github.com/prometheus/procfs v0.8.0 // indirect
-	github.com/quasilyte/go-ruleguard v0.3.17 // indirect
-	github.com/quasilyte/gogrep v0.0.0-20220120141003-628d8b3623b5 // indirect
+	github.com/quasilyte/go-ruleguard v0.3.18 // indirect
+	github.com/quasilyte/gogrep v0.0.0-20220828223005-86e4605de09f // indirect
 	github.com/quasilyte/regex/syntax v0.0.0-20200407221936-30656e2c4a95 // indirect
 	github.com/quasilyte/stdinfo v0.0.0-20220114132959-f7386bf02567 // indirect
 	github.com/rs/zerolog v1.27.0 // indirect
@@ -210,7 +212,7 @@ require (
 	github.com/ryanrolds/sqlclosecheck v0.3.0 // indirect
 	github.com/sanposhiho/wastedassign/v2 v2.0.6 // indirect
 	github.com/sashamelentyev/interfacebloat v1.1.0 // indirect
-	github.com/sashamelentyev/usestdlibvars v1.13.0 // indirect
+	github.com/sashamelentyev/usestdlibvars v1.20.0 // indirect
 	github.com/satori/go.uuid v1.2.0 // indirect
 	github.com/securego/gosec/v2 v2.13.1 // indirect
 	github.com/shazow/go-diff v0.0.0-20160112020656-b6b7b6733b8c // indirect
@@ -226,16 +228,15 @@ require (
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/ssgreg/nlreturn/v2 v2.2.1 // indirect
 	github.com/stbenjam/no-sprintf-host-port v0.1.1 // indirect
-	github.com/stretchr/objx v0.4.0 // indirect
+	github.com/stretchr/objx v0.5.0 // indirect
 	github.com/subosito/gotenv v1.4.1 // indirect
-	github.com/sylvia7788/contextcheck v1.0.6 // indirect
 	github.com/tdakkota/asciicheck v0.1.1 // indirect
 	github.com/tecbot/gorocksdb v0.0.0-20191217155057-f0fad39f321c // indirect
 	github.com/tetafro/godot v1.4.11 // indirect
 	github.com/timakin/bodyclose v0.0.0-20210704033933-f49887972144 // indirect
-	github.com/timonwong/logrlint v0.1.0 // indirect
-	github.com/tomarrell/wrapcheck/v2 v2.6.2 // indirect
-	github.com/tommy-muehle/go-mnd/v2 v2.5.0 // indirect
+	github.com/timonwong/loggercheck v0.9.3 // indirect
+	github.com/tomarrell/wrapcheck/v2 v2.7.0 // indirect
+	github.com/tommy-muehle/go-mnd/v2 v2.5.1 // indirect
 	github.com/ultraware/funlen v0.0.3 // indirect
 	github.com/ultraware/whitespace v0.0.5 // indirect
 	github.com/uudashr/gocognit v1.0.6 // indirect
@@ -244,26 +245,27 @@ require (
 	gitlab.com/bosi/decorder v0.2.3 // indirect
 	go.etcd.io/bbolt v1.3.6 // indirect
 	go.opencensus.io v0.23.0 // indirect
-	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.34.0 // indirect
-	go.opentelemetry.io/otel v1.9.0 // indirect
-	go.opentelemetry.io/otel/trace v1.9.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.36.3 // indirect
+	go.opentelemetry.io/otel v1.11.0 // indirect
+	go.opentelemetry.io/otel/metric v0.32.3 // indirect
+	go.opentelemetry.io/otel/trace v1.11.0 // indirect
 	go.uber.org/atomic v1.10.0 // indirect
 	go.uber.org/multierr v1.8.0 // indirect
-	go.uber.org/zap v1.22.0 // indirect
+	go.uber.org/zap v1.23.0 // indirect
 	golang.org/x/exp v0.0.0-20220722155223-a9213eeb770e // indirect
-	golang.org/x/exp/typeparams v0.0.0-20220613132600-b0d781184e0d // indirect
-	golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 // indirect
-	golang.org/x/sync v0.0.0-20220819030929-7fc1605a5dde // indirect
-	golang.org/x/sys v0.0.0-20220818161305-2296e01440c6 // indirect
-	golang.org/x/term v0.0.0-20220722155259-a9ba230a4035 // indirect
-	golang.org/x/text v0.3.7 // indirect
-	golang.org/x/tools v0.1.12 // indirect
-	google.golang.org/genproto v0.0.0-20220725144611-272f38e5d71b // indirect
+	golang.org/x/exp/typeparams v0.0.0-20220827204233-334a2380cb91 // indirect
+	golang.org/x/mod v0.6.0 // indirect
+	golang.org/x/sync v0.0.0-20220929204114-8fcdb60fdcc0 // indirect
+	golang.org/x/sys v0.1.0 // indirect
+	golang.org/x/term v0.1.0 // indirect
+	golang.org/x/text v0.4.0 // indirect
+	golang.org/x/tools v0.2.0 // indirect
+	google.golang.org/genproto v0.0.0-20221014213838-99cd37c6964a // indirect
 	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	honnef.co/go/tools v0.3.3 // indirect
-	mvdan.cc/gofumpt v0.3.1 // indirect
+	mvdan.cc/gofumpt v0.4.0 // indirect
 	mvdan.cc/interfacer v0.0.0-20180901003855-c20040233aed // indirect
 	mvdan.cc/lint v0.0.0-20170908181259-adc824a0674b // indirect
 	mvdan.cc/unparam v0.0.0-20220706161116-678bad134442 // indirect
--- a/go.sum
+++ b/go.sum
@@ -45,6 +45,8 @@ cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RX
 cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
 cloud.google.com/go/storage v1.14.0/go.mod h1:GrKmX003DSIwi9o29oFT7YDnHYwZoctc3fOKtUw0Xmo=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
+github.com/Abirdcfly/dupword v0.0.7 h1:z14n0yytA3wNO2gpCD/jVtp/acEXPGmYu0esewpBt6Q=
+github.com/Abirdcfly/dupword v0.0.7/go.mod h1:K/4M1kj+Zh39d2aotRwypvasonOyAMH1c/IZJzE0dmk=
 github.com/Antonboom/errname v0.1.7 h1:mBBDKvEYwPl4WFFNwec1CZO096G6vzK9vvDQzAwkako=
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@@ -72,14 +74,14 @@ github.com/Masterminds/semver v1.5.0 h1:H65muMkzWKEuNDnfl9d70GUjFniHKHRbFPGBuZ3Q
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@@ -149,8 +151,8 @@ github.com/btcsuite/btcd v0.23.0 h1:V2/ZgjfDFIygAX3ZapeigkVBoVUtOJKSwrhZdlpSvaA=
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@@ -169,10 +171,12 @@ github.com/btcsuite/snappy-go v0.0.0-20151229074030-0bdef8d06723/go.mod h1:8woku
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@@ -249,13 +253,13 @@ github.com/creack/pty v1.1.7/go.mod h1:lj5s0c3V2DBrqTV7llrYr5NG6My20zk30Fl46Y7Do
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@@ -279,12 +283,13 @@ github.com/dgryski/go-sip13 v0.0.0-20181026042036-e10d5fee7954/go.mod h1:vAd38F8
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@@ -338,8 +343,8 @@ github.com/fzipp/gocyclo v0.6.0/go.mod h1:rXPyn8fnlpa0R2csP/31uerbiVBugk5whMdlya
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@@ -368,13 +373,12 @@ github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/me
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@@ -451,10 +455,10 @@ github.com/golangci/dupl v0.0.0-20180902072040-3e9179ac440a h1:w8hkcTqaFpzKqonE9
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@@ -480,8 +484,9 @@ github.com/google/go-cmp v0.5.3/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
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@@ -704,6 +704,8 @@ github.com/magiconair/properties v1.8.1/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czP
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@@ -737,8 +739,8 @@ github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182aff
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@@ -761,8 +763,8 @@ github.com/mitchellh/mapstructure v1.4.1/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RR
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@@ -798,8 +800,8 @@ github.com/nbutton23/zxcvbn-go v0.0.0-20210217022336-fa2cb2858354 h1:4kuARK6Y6Fx
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@@ -964,7 +967,7 @@ github.com/rcrowley/go-metrics v0.0.0-20201227073835-cf1acfcdf475/go.mod h1:bCqn
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@@ -988,8 +991,8 @@ github.com/sasha-s/go-deadlock v0.3.1 h1:sqv7fDNShgjcaxkO0JNcOAlr8B9+cV5Ey/OB71e
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@@ -1042,8 +1045,8 @@ github.com/spf13/cobra v0.0.5/go.mod h1:3K3wKZymM7VvHMDS9+Akkh4K60UwM26emMESw8tL
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@@ -1069,8 +1072,9 @@ github.com/streadway/handy v0.0.0-20190108123426-d5acb3125c2a/go.mod h1:qNTQ5P5J
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@@ -1079,13 +1083,12 @@ github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5
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@@ -1106,14 +1109,14 @@ github.com/tetafro/godot v1.4.11 h1:BVoBIqAf/2QdbFmSwAWnaIqDivZdOV0ZRwEm6jivLKw=
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@@ -1125,8 +1128,8 @@ github.com/urfave/cli v1.20.0/go.mod h1:70zkFmudgCuE/ngEzBv17Jvp/497gISqfk5gWijb
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@@ -1167,12 +1170,14 @@ go.opencensus.io v0.22.4/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
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@@ -1194,8 +1199,8 @@ go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
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@@ -1219,8 +1224,8 @@ golang.org/x/crypto v0.0.0-20210616213533-5ff15b29337e/go.mod h1:GvvjBRRGRdwPK5y
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 golang.org/x/crypto v0.0.0-20211108221036-ceb1ce70b4fa/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
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 golang.org/x/exp v0.0.0-20180321215751-8460e604b9de/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20180807140117-3d87b88a115f/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
@@ -1237,8 +1242,8 @@ golang.org/x/exp v0.0.0-20200224162631-6cc2880d07d6/go.mod h1:3jZMyOhIsHpP37uCMk
 golang.org/x/exp v0.0.0-20220722155223-a9213eeb770e h1:+WEEuIdZHnUeJJmEUjyYC2gfUMj69yZXw17EnHg/otA=
 golang.org/x/exp v0.0.0-20220722155223-a9213eeb770e/go.mod h1:Kr81I6Kryrl9sr8s2FK3vxD90NdsKWRuOIl2O4CvYbA=
 golang.org/x/exp/typeparams v0.0.0-20220428152302-39d4317da171/go.mod h1:AbB0pIl9nAr9wVwH+Z2ZpaocVmF5I4GyWCDIsVjR0bk=
-golang.org/x/exp/typeparams v0.0.0-20220613132600-b0d781184e0d h1:+W8Qf4iJtMGKkyAygcKohjxTk4JPsL9DpzApJ22m5Ic=
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+golang.org/x/exp/typeparams v0.0.0-20220827204233-334a2380cb91 h1:Ic/qN6TEifvObMGQy72k0n1LlJr7DjWWEi+MOsDOiSk=
+golang.org/x/exp/typeparams v0.0.0-20220827204233-334a2380cb91/go.mod h1:AbB0pIl9nAr9wVwH+Z2ZpaocVmF5I4GyWCDIsVjR0bk=
 golang.org/x/image v0.0.0-20180708004352-c73c2afc3b81/go.mod h1:ux5Hcp/YLpHSI86hEcLt0YII63i6oz57MZXIpbrjZUs=
 golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
 golang.org/x/image v0.0.0-20190802002840-cff245a6509b/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
@@ -1267,8 +1272,9 @@ golang.org/x/mod v0.4.1/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.5.1/go.mod h1:5OXOZSfqPIIbmVBIIKWRFfZjPR0E5r58TLhUjH0a2Ro=
 golang.org/x/mod v0.6.0-dev.0.20220106191415-9b9b3d81d5e3/go.mod h1:3p9vT2HGsQu2K1YbXdKPJLVgG5VJdoTa1poYQBtP1AY=
-golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 h1:6zppjxzCulZykYSLyVDYbneBfbaBIQPYMevg0bEwv2s=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/mod v0.6.0 h1:b9gGHsz9/HhJ3HF5DHQytPpuwocVTChQJK3AvoLRD5I=
+golang.org/x/mod v0.6.0/go.mod h1:4mET923SAdbXp2ki8ey+zGs1SLqsuM2Y0uvdZR/fUNI=
 golang.org/x/net v0.0.0-20180719180050-a680a1efc54d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -1327,8 +1333,8 @@ golang.org/x/net v0.0.0-20211029224645-99673261e6eb/go.mod h1:9nx3DQGgdP8bBQD5qx
 golang.org/x/net v0.0.0-20220127200216-cd36cc0744dd/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
 golang.org/x/net v0.0.0-20220225172249-27dd8689420f/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
 golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
-golang.org/x/net v0.0.0-20220812174116-3211cb980234 h1:RDqmgfe7SvlMWoqC3xwQ2blLO3fcWcxMa3eBLRdRW7E=
-golang.org/x/net v0.0.0-20220812174116-3211cb980234/go.mod h1:YDH+HFinaLZZlnHAfSS6ZXJJ9M9t4Dl22yv3iI2vPwk=
+golang.org/x/net v0.1.0 h1:hZ/3BUoy5aId7sCpA/Tc5lt8DkFgdVS2onTpJsZ/fl0=
+golang.org/x/net v0.1.0/go.mod h1:Cx3nUiGt4eDBEyega/BKRp+/AlGL8hYe7U9odMt2Cco=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
@@ -1356,8 +1362,8 @@ golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20220819030929-7fc1605a5dde h1:ejfdSekXMDxDLbRrJMwUk6KnSLZ2McaUCVcIKM+N6jc=
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 golang.org/x/sys v0.0.0-20180823144017-11551d06cbcc/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -1458,13 +1464,13 @@ golang.org/x/sys v0.0.0-20220702020025-31831981b65f/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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 golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220818161305-2296e01440c6 h1:Sx/u41w+OwrInGdEckYmEuU5gHoGSL4QbDz3S9s6j4U=
-golang.org/x/sys v0.0.0-20220818161305-2296e01440c6/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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 golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
-golang.org/x/term v0.0.0-20220722155259-a9ba230a4035 h1:Q5284mrmYTpACcm+eAKjKJH48BBwSyfJqmmGDTtT8Vc=
-golang.org/x/term v0.0.0-20220722155259-a9ba230a4035/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
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 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
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@@ -1473,8 +1479,9 @@ golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
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 golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.4.0 h1:BrVqGRd7+k1DiOgtnFvAkoQEWQvBc25ouMJM6429SFg=
+golang.org/x/text v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
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@@ -1574,8 +1581,9 @@ golang.org/x/tools v0.1.9-0.20211228192929-ee1ca4ffc4da/go.mod h1:nABZi5QlRsZVlz
 golang.org/x/tools v0.1.9/go.mod h1:nABZi5QlRsZVlzPpHl034qft6wpY4eDcsTt5AaioBiU=
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-golang.org/x/tools v0.1.12 h1:VveCTK38A2rkS8ZqFY25HIDFscX5X9OoEhJd3quQmXU=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/tools v0.2.0 h1:G6AHpWxTMGY1KyEYoAQ5WTtIekUUvDNjan3ugu60JvE=
+golang.org/x/tools v0.2.0/go.mod h1:y4OqIKeOV/fWJetJ8bXPU1sEVniLMIyDAZWeHdV+NTA=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -1665,8 +1673,8 @@ google.golang.org/genproto v0.0.0-20210402141018-6c239bbf2bb1/go.mod h1:9lPAdzaE
 google.golang.org/genproto v0.0.0-20210602131652-f16073e35f0c/go.mod h1:UODoCrxHCcBojKKwX1terBiRUaqAsFqJiF615XL43r0=
 google.golang.org/genproto v0.0.0-20210917145530-b395a37504d4/go.mod h1:eFjDcFEctNawg4eG61bRv87N7iHBWyVhJu7u1kqDUXY=
 google.golang.org/genproto v0.0.0-20211101144312-62acf1d99145/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
-google.golang.org/genproto v0.0.0-20220725144611-272f38e5d71b h1:SfSkJugek6xm7lWywqth4r2iTrYLpD8lOj1nMIIhMNM=
-google.golang.org/genproto v0.0.0-20220725144611-272f38e5d71b/go.mod h1:iHe1svFLAZg9VWz891+QbRMwUv9O/1Ww+/mngYeThbc=
+google.golang.org/genproto v0.0.0-20221014213838-99cd37c6964a h1:GH6UPn3ixhWcKDhpnEC55S75cerLPdpp3hrhfKYjZgw=
+google.golang.org/genproto v0.0.0-20221014213838-99cd37c6964a/go.mod h1:1vXfmgAz9N9Jx0QA82PqRVauvCz1SGSz739p0f183jM=
 google.golang.org/grpc v1.17.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs=
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 google.golang.org/grpc v1.20.0/go.mod h1:chYK+tFQF0nDUGJgXMSgLCQk3phJEuONr2DCgLDdAQM=
@@ -1710,10 +1718,9 @@ google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGj
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-google.golang.org/protobuf v1.27.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-google.golang.org/protobuf v1.28.1 h1:d0NfwRgPtno5B1Wa6L2DAG+KivqkdutMf1UhdNx175w=
-google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
+google.golang.org/protobuf v1.28.2-0.20220831092852-f930b1dc76e8 h1:KR8+MyP7/qOlV+8Af01LtjL04bu7on42eVsxT4EyBQk=
+google.golang.org/protobuf v1.28.2-0.20220831092852-f930b1dc76e8/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
@@ -1761,8 +1768,8 @@ honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9
 honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
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-mvdan.cc/gofumpt v0.3.1 h1:avhhrOmv0IuvQVK7fvwV91oFSGAk5/6Po8GXTzICeu8=
-mvdan.cc/gofumpt v0.3.1/go.mod h1:w3ymliuxvzVx8DAutBnVyDqYb1Niy/yCJt/lk821YCE=
+mvdan.cc/gofumpt v0.4.0 h1:JVf4NN1mIpHogBj7ABpgOyZc65/UUOkKQFkoURsz4MM=
+mvdan.cc/gofumpt v0.4.0/go.mod h1:PljLOHDeZqgS8opHRKLzp2It2VBuSdteAgqUfzMTxlQ=
 mvdan.cc/interfacer v0.0.0-20180901003855-c20040233aed h1:WX1yoOaKQfddO/mLzdV4wptyWgoH/6hwLs7QHTixo0I=
 mvdan.cc/interfacer v0.0.0-20180901003855-c20040233aed/go.mod h1:Xkxe497xwlCKkIaQYRfC7CSLworTXY9RMqwhhCm+8Nc=
 mvdan.cc/lint v0.0.0-20170908181259-adc824a0674b h1:DxJ5nJdkhDlLok9K6qO+5290kphDJbHOQO1DFFFTeBo=
--- a/libs/rand/random.go
+++ b/libs/rand/random.go
@@ -48,7 +48,7 @@ func (r *Rand) init() {
 }

 func (r *Rand) reset(seed int64) {
-	r.rand = mrand.New(mrand.NewSource(seed)) //nolint:gosec
+	r.rand = mrand.New(mrand.NewSource(seed))
 }

 //----------------------------------------
--- a/mempool/v0/reactor.go
+++ b/mempool/v0/reactor.go
@@ -134,6 +134,7 @@ func (memR *Reactor) GetChannels() []*p2p.ChannelDescriptor {
 			ID:                  mempool.MempoolChannel,
 			Priority:            5,
 			RecvMessageCapacity: batchMsg.Size(),
+			MessageType:         &protomem.Message{},
 		},
 	}
 }
@@ -154,27 +155,34 @@ func (memR *Reactor) RemovePeer(peer p2p.Peer, reason interface{}) {

 // Receive implements Reactor.
 // It adds any received transactions to the mempool.
-func (memR *Reactor) Receive(chID byte, src p2p.Peer, msgBytes []byte) {
-	msg, err := memR.decodeMsg(msgBytes)
-	if err != nil {
-		memR.Logger.Error("Error decoding message", "src", src, "chId", chID, "err", err)
-		memR.Switch.StopPeerForError(src, err)
-		return
-	}
-	memR.Logger.Debug("Receive", "src", src, "chId", chID, "msg", msg)
-
-	txInfo := mempool.TxInfo{SenderID: memR.ids.GetForPeer(src)}
-	if src != nil {
-		txInfo.SenderP2PID = src.ID()
-	}
-
-	for _, tx := range msg.Txs {
-		err = memR.mempool.CheckTx(tx, nil, txInfo)
-		if errors.Is(err, mempool.ErrTxInCache) {
-			memR.Logger.Debug("Tx already exists in cache", "tx", tx.String())
-		} else if err != nil {
-			memR.Logger.Info("Could not check tx", "tx", tx.String(), "err", err)
+func (memR *Reactor) Receive(e p2p.Envelope) {
+	memR.Logger.Debug("Receive", "src", e.Src, "chId", e.ChannelID, "msg", e.Message)
+	switch msg := e.Message.(type) {
+	case *protomem.Txs:
+		protoTxs := msg.GetTxs()
+		if len(protoTxs) == 0 {
+			memR.Logger.Error("received empty txs from peer", "src", e.Src)
+			return
 		}
+		txInfo := mempool.TxInfo{SenderID: memR.ids.GetForPeer(e.Src)}
+		if e.Src != nil {
+			txInfo.SenderP2PID = e.Src.ID()
+		}
+
+		var err error
+		for _, tx := range protoTxs {
+			ntx := types.Tx(tx)
+			err = memR.mempool.CheckTx(ntx, nil, txInfo)
+			if errors.Is(err, mempool.ErrTxInCache) {
+				memR.Logger.Debug("Tx already exists in cache", "tx", ntx.String())
+			} else if err != nil {
+				memR.Logger.Info("Could not check tx", "tx", ntx.String(), "err", err)
+			}
+		}
+	default:
+		memR.Logger.Error("unknown message type", "src", e.Src, "chId", e.ChannelID, "msg", e.Message)
+		memR.Switch.StopPeerForError(e.Src, fmt.Errorf("mempool cannot handle message of type: %T", e.Message))
+		return
 	}

 	// broadcasting happens from go routines per peer
@@ -234,18 +242,10 @@ func (memR *Reactor) broadcastTxRoutine(peer p2p.Peer) {
 		// https://github.com/tendermint/tendermint/issues/5796

 		if _, ok := memTx.senders.Load(peerID); !ok {
-			msg := protomem.Message{
-				Sum: &protomem.Message_Txs{
-					Txs: &protomem.Txs{Txs: [][]byte{memTx.tx}},
-				},
-			}
-
-			bz, err := msg.Marshal()
-			if err != nil {
-				panic(err)
-			}
-
-			success := peer.Send(mempool.MempoolChannel, bz)
+			success := peer.Send(p2p.Envelope{
+				ChannelID: mempool.MempoolChannel,
+				Message:   &protomem.Txs{Txs: [][]byte{memTx.tx}},
+			})
 			if !success {
 				time.Sleep(mempool.PeerCatchupSleepIntervalMS * time.Millisecond)
 				continue
@@ -264,35 +264,6 @@ func (memR *Reactor) broadcastTxRoutine(peer p2p.Peer) {
 	}
 }

-func (memR *Reactor) decodeMsg(bz []byte) (TxsMessage, error) {
-	msg := protomem.Message{}
-	err := msg.Unmarshal(bz)
-	if err != nil {
-		return TxsMessage{}, err
-	}
-
-	var message TxsMessage
-
-	if i, ok := msg.Sum.(*protomem.Message_Txs); ok {
-		txs := i.Txs.GetTxs()
-
-		if len(txs) == 0 {
-			return message, errors.New("empty TxsMessage")
-		}
-
-		decoded := make([]types.Tx, len(txs))
-		for j, tx := range txs {
-			decoded[j] = types.Tx(tx)
-		}
-
-		message = TxsMessage{
-			Txs: decoded,
-		}
-		return message, nil
-	}
-	return message, fmt.Errorf("msg type: %T is not supported", msg)
-}
-
 // TxsMessage is a Message containing transactions.
 type TxsMessage struct {
 	Txs []types.Tx
--- a/mempool/v0/reactor_test.go
+++ b/mempool/v0/reactor_test.go
@@ -264,6 +264,10 @@ func TestMempoolIDsPanicsIfNodeRequestsOvermaxActiveIDs(t *testing.T) {
 	})
 }

+// TODO: This test tests that we don't panic and are able to generate new
+// PeerIDs for each peer we add. It seems as though we should be able to test
+// this in a much more direct way.
+// https://github.com/tendermint/tendermint/issues/9639
 func TestDontExhaustMaxActiveIDs(t *testing.T) {
 	config := cfg.TestConfig()
 	const N = 1
@@ -279,7 +283,12 @@ func TestDontExhaustMaxActiveIDs(t *testing.T) {

 	for i := 0; i < mempool.MaxActiveIDs+1; i++ {
 		peer := mock.NewPeer(nil)
-		reactor.Receive(mempool.MempoolChannel, peer, []byte{0x1, 0x2, 0x3})
+		reactor.Receive(p2p.Envelope{
+			ChannelID: mempool.MempoolChannel,
+			Src:       peer,
+			Message:   &memproto.Message{}, // This uses the wrong message type on purpose to stop the peer as in an error state in the reactor.
+		},
+		)
 		reactor.AddPeer(peer)
 	}
 }
--- a/mempool/v1/reactor.go
+++ b/mempool/v1/reactor.go
@@ -133,6 +133,7 @@ func (memR *Reactor) GetChannels() []*p2p.ChannelDescriptor {
 			ID:                  mempool.MempoolChannel,
 			Priority:            5,
 			RecvMessageCapacity: batchMsg.Size(),
+			MessageType:         &protomem.Message{},
 		},
 	}
 }
@@ -153,27 +154,36 @@ func (memR *Reactor) RemovePeer(peer p2p.Peer, reason interface{}) {

 // Receive implements Reactor.
 // It adds any received transactions to the mempool.
-func (memR *Reactor) Receive(chID byte, src p2p.Peer, msgBytes []byte) {
-	msg, err := memR.decodeMsg(msgBytes)
-	if err != nil {
-		memR.Logger.Error("Error decoding message", "src", src, "chId", chID, "err", err)
-		memR.Switch.StopPeerForError(src, err)
+func (memR *Reactor) Receive(e p2p.Envelope) {
+	memR.Logger.Debug("Receive", "src", e.Src, "chId", e.ChannelID, "msg", e.Message)
+	switch msg := e.Message.(type) {
+	case *protomem.Txs:
+		protoTxs := msg.GetTxs()
+		if len(protoTxs) == 0 {
+			memR.Logger.Error("received tmpty txs from peer", "src", e.Src)
+			return
+		}
+		txInfo := mempool.TxInfo{SenderID: memR.ids.GetForPeer(e.Src)}
+		if e.Src != nil {
+			txInfo.SenderP2PID = e.Src.ID()
+		}
+
+		var err error
+		for _, tx := range protoTxs {
+			ntx := types.Tx(tx)
+			err = memR.mempool.CheckTx(ntx, nil, txInfo)
+			if errors.Is(err, mempool.ErrTxInCache) {
+				memR.Logger.Debug("Tx already exists in cache", "tx", ntx.String())
+			} else if err != nil {
+				memR.Logger.Info("Could not check tx", "tx", ntx.String(), "err", err)
+			}
+		}
+	default:
+		memR.Logger.Error("unknown message type", "src", e.Src, "chId", e.ChannelID, "msg", e.Message)
+		memR.Switch.StopPeerForError(e.Src, fmt.Errorf("mempool cannot handle message of type: %T", e.Message))
 		return
 	}
-	memR.Logger.Debug("Receive", "src", src, "chId", chID, "msg", msg)

-	txInfo := mempool.TxInfo{SenderID: memR.ids.GetForPeer(src)}
-	if src != nil {
-		txInfo.SenderP2PID = src.ID()
-	}
-	for _, tx := range msg.Txs {
-		err = memR.mempool.CheckTx(tx, nil, txInfo)
-		if err == mempool.ErrTxInCache {
-			memR.Logger.Debug("Tx already exists in cache", "tx", tx.String())
-		} else if err != nil {
-			memR.Logger.Info("Could not check tx", "tx", tx.String(), "err", err)
-		}
-	}
 	// broadcasting happens from go routines per peer
 }

@@ -233,18 +243,10 @@ func (memR *Reactor) broadcastTxRoutine(peer p2p.Peer) {
 		// NOTE: Transaction batching was disabled due to
 		// https://github.com/tendermint/tendermint/issues/5796
 		if !memTx.HasPeer(peerID) {
-			msg := protomem.Message{
-				Sum: &protomem.Message_Txs{
-					Txs: &protomem.Txs{Txs: [][]byte{memTx.tx}},
-				},
-			}
-
-			bz, err := msg.Marshal()
-			if err != nil {
-				panic(err)
-			}
-
-			success := peer.Send(mempool.MempoolChannel, bz)
+			success := peer.Send(p2p.Envelope{
+				ChannelID: mempool.MempoolChannel,
+				Message:   &protomem.Txs{Txs: [][]byte{memTx.tx}},
+			})
 			if !success {
 				time.Sleep(mempool.PeerCatchupSleepIntervalMS * time.Millisecond)
 				continue
@@ -268,37 +270,6 @@ func (memR *Reactor) broadcastTxRoutine(peer p2p.Peer) {
 //-----------------------------------------------------------------------------
 // Messages

-func (memR *Reactor) decodeMsg(bz []byte) (TxsMessage, error) {
-	msg := protomem.Message{}
-	err := msg.Unmarshal(bz)
-	if err != nil {
-		return TxsMessage{}, err
-	}
-
-	var message TxsMessage
-
-	if i, ok := msg.Sum.(*protomem.Message_Txs); ok {
-		txs := i.Txs.GetTxs()
-
-		if len(txs) == 0 {
-			return message, errors.New("empty TxsMessage")
-		}
-
-		decoded := make([]types.Tx, len(txs))
-		for j, tx := range txs {
-			decoded[j] = types.Tx(tx)
-		}
-
-		message = TxsMessage{
-			Txs: decoded,
-		}
-		return message, nil
-	}
-	return message, fmt.Errorf("msg type: %T is not supported", msg)
-}
-
-//-------------------------------------
-
 // TxsMessage is a Message containing transactions.
 type TxsMessage struct {
 	Txs []types.Tx
--- a/node/id.go
+++ b/node/id.go
@@ -1,35 +0,0 @@
-package node
-
-import (
-	"time"
-
-	"github.com/tendermint/tendermint/crypto"
-)
-
-type ID struct {
-	Name   string
-	PubKey crypto.PubKey
-}
-
-type PrivNodeID struct {
-	ID
-	PrivKey crypto.PrivKey
-}
-
-type Greeting struct {
-	ID
-	Version string
-	ChainID string
-	Message string
-	Time    time.Time
-}
-
-type SignedNodeGreeting struct {
-	Greeting
-	Signature []byte
-}
-
-func (pnid *PrivNodeID) SignGreeting() *SignedNodeGreeting {
-	// greeting := NodeGreeting{}
-	return nil
-}
--- a/node/node.go
+++ b/node/node.go
--- a/node/node_test.go
+++ b/node/node_test.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"net"
+	"net/http"
 	"os"
 	"syscall"
 	"testing"
@@ -122,6 +123,8 @@ func TestNodeSetAppVersion(t *testing.T) {
 	// create & start node
 	n, err := DefaultNewNode(config, log.TestingLogger())
 	require.NoError(t, err)
+	require.NoError(t, n.Start())
+	defer n.Stop() //nolint:errcheck

 	// default config uses the kvstore app
 	var appVersion = kvstore.ProtocolVersion
@@ -135,6 +138,29 @@ func TestNodeSetAppVersion(t *testing.T) {
 	assert.Equal(t, n.nodeInfo.(p2p.DefaultNodeInfo).ProtocolVersion.App, appVersion)
 }

+func TestPprofServer(t *testing.T) {
+	config := test.ResetTestRoot("node_pprof_test")
+	defer os.RemoveAll(config.RootDir)
+	config.RPC.PprofListenAddress = testFreeAddr(t)
+
+	// should not work yet
+	_, err := http.Get("http://" + config.RPC.PprofListenAddress) //nolint: bodyclose
+	assert.Error(t, err)
+
+	n, err := DefaultNewNode(config, log.TestingLogger())
+	assert.NoError(t, err)
+	assert.NoError(t, n.Start())
+	defer func() {
+		require.NoError(t, n.Stop())
+	}()
+	assert.NotNil(t, n.pprofSrv)
+
+	resp, err := http.Get("http://" + config.RPC.PprofListenAddress + "/debug/pprof")
+	assert.NoError(t, err)
+	defer resp.Body.Close()
+	assert.Equal(t, 200, resp.StatusCode)
+}
+
 func TestNodeSetPrivValTCP(t *testing.T) {
 	addr := "tcp://" + testFreeAddr(t)

@@ -165,6 +191,8 @@ func TestNodeSetPrivValTCP(t *testing.T) {

 	n, err := DefaultNewNode(config, log.TestingLogger())
 	require.NoError(t, err)
+	require.NoError(t, n.Start())
+	defer n.Stop() //nolint:errcheck
 	assert.IsType(t, &privval.RetrySignerClient{}, n.PrivValidator())
 }

@@ -177,7 +205,7 @@ func TestPrivValidatorListenAddrNoProtocol(t *testing.T) {
 	config.BaseConfig.PrivValidatorListenAddr = addrNoPrefix

 	_, err := DefaultNewNode(config, log.TestingLogger())
-	assert.Error(t, err)
+	require.NoError(t, err)
 }

 func TestNodeSetPrivValIPC(t *testing.T) {
@@ -427,7 +455,6 @@ func TestNodeNewNodeCustomReactors(t *testing.T) {
 			RecvMessageCapacity: 100,
 		},
 	}
-	customBlocksyncReactor := p2pmock.NewReactor()

 	nodeKey, err := p2p.LoadOrGenNodeKey(config.NodeKeyFile())
 	require.NoError(t, err)
@@ -440,7 +467,7 @@ func TestNodeNewNodeCustomReactors(t *testing.T) {
 		DefaultDBProvider,
 		DefaultMetricsProvider(config.Instrumentation),
 		log.TestingLogger(),
-		CustomReactors(map[string]p2p.Reactor{"FOO": cr, "BLOCKSYNC": customBlocksyncReactor}),
+		CustomReactors(map[string]p2p.Reactor{"FOO": cr}),
 	)
 	require.NoError(t, err)

@@ -451,9 +478,6 @@ func TestNodeNewNodeCustomReactors(t *testing.T) {
 	assert.True(t, cr.IsRunning())
 	assert.Equal(t, cr, n.Switch().Reactor("FOO"))

-	assert.True(t, customBlocksyncReactor.IsRunning())
-	assert.Equal(t, customBlocksyncReactor, n.Switch().Reactor("BLOCKSYNC"))
-
 	channels := n.NodeInfo().(p2p.DefaultNodeInfo).Channels
 	assert.Contains(t, channels, mempl.MempoolChannel)
 	assert.Contains(t, channels, cr.Channels[0].ID)
--- a/node/setup.go
+++ b/node/setup.go
@@ -0,0 +1,682 @@
+package node
+
+import (
+	"bytes"
+	"context"
+	"errors"
+	"fmt"
+	"net"
+	"strings"
+	"time"
+
+	dbm "github.com/tendermint/tm-db"
+
+	abci "github.com/tendermint/tendermint/abci/types"
+	"github.com/tendermint/tendermint/blocksync"
+	cfg "github.com/tendermint/tendermint/config"
+	cs "github.com/tendermint/tendermint/consensus"
+	"github.com/tendermint/tendermint/crypto"
+	"github.com/tendermint/tendermint/evidence"
+
+	tmjson "github.com/tendermint/tendermint/libs/json"
+	"github.com/tendermint/tendermint/libs/log"
+	"github.com/tendermint/tendermint/light"
+	mempl "github.com/tendermint/tendermint/mempool"
+	mempoolv0 "github.com/tendermint/tendermint/mempool/v0"
+	mempoolv1 "github.com/tendermint/tendermint/mempool/v1"
+	"github.com/tendermint/tendermint/p2p"
+	"github.com/tendermint/tendermint/p2p/pex"
+	"github.com/tendermint/tendermint/privval"
+	"github.com/tendermint/tendermint/proxy"
+	sm "github.com/tendermint/tendermint/state"
+	"github.com/tendermint/tendermint/state/indexer"
+	blockidxkv "github.com/tendermint/tendermint/state/indexer/block/kv"
+	blockidxnull "github.com/tendermint/tendermint/state/indexer/block/null"
+	"github.com/tendermint/tendermint/state/indexer/sink/psql"
+	"github.com/tendermint/tendermint/state/txindex"
+	"github.com/tendermint/tendermint/state/txindex/kv"
+	"github.com/tendermint/tendermint/state/txindex/null"
+	"github.com/tendermint/tendermint/statesync"
+	"github.com/tendermint/tendermint/store"
+	"github.com/tendermint/tendermint/types"
+	"github.com/tendermint/tendermint/version"
+
+	_ "github.com/lib/pq" // provide the psql db driver
+)
+
+// DBContext specifies config information for loading a new DB.
+type DBContext struct {
+	ID     string
+	Config *cfg.Config
+}
+
+// DBProvider takes a DBContext and returns an instantiated DB.
+type DBProvider func(*DBContext) (dbm.DB, error)
+
+const readHeaderTimeout = 10 * time.Second
+
+// DefaultDBProvider returns a database using the DBBackend and DBDir
+// specified in the ctx.Config.
+func DefaultDBProvider(ctx *DBContext) (dbm.DB, error) {
+	dbType := dbm.BackendType(ctx.Config.DBBackend)
+	return dbm.NewDB(ctx.ID, dbType, ctx.Config.DBDir())
+}
+
+// GenesisDocProvider returns a GenesisDoc.
+// It allows the GenesisDoc to be pulled from sources other than the
+// filesystem, for instance from a distributed key-value store cluster.
+type GenesisDocProvider func() (*types.GenesisDoc, error)
+
+// DefaultGenesisDocProviderFunc returns a GenesisDocProvider that loads
+// the GenesisDoc from the config.GenesisFile() on the filesystem.
+func DefaultGenesisDocProviderFunc(config *cfg.Config) GenesisDocProvider {
+	return func() (*types.GenesisDoc, error) {
+		return types.GenesisDocFromFile(config.GenesisFile())
+	}
+}
+
+// Provider takes a config and a logger and returns a ready to go Node.
+type Provider func(*cfg.Config, log.Logger) (*Node, error)
+
+// DefaultNewNode returns a Tendermint node with default settings for the
+// PrivValidator, ClientCreator, GenesisDoc, and DBProvider.
+// It implements NodeProvider.
+func DefaultNewNode(config *cfg.Config, logger log.Logger) (*Node, error) {
+	nodeKey, err := p2p.LoadOrGenNodeKey(config.NodeKeyFile())
+	if err != nil {
+		return nil, fmt.Errorf("failed to load or gen node key %s: %w", config.NodeKeyFile(), err)
+	}
+
+	return NewNode(config,
+		privval.LoadOrGenFilePV(config.PrivValidatorKeyFile(), config.PrivValidatorStateFile()),
+		nodeKey,
+		proxy.DefaultClientCreator(config.ProxyApp, config.ABCI, config.DBDir()),
+		DefaultGenesisDocProviderFunc(config),
+		DefaultDBProvider,
+		DefaultMetricsProvider(config.Instrumentation),
+		logger,
+	)
+}
+
+// MetricsProvider returns a consensus, p2p and mempool Metrics.
+type MetricsProvider func(chainID string) (*cs.Metrics, *p2p.Metrics, *mempl.Metrics, *sm.Metrics, *proxy.Metrics, *blocksync.Metrics, *statesync.Metrics)
+
+// DefaultMetricsProvider returns Metrics build using Prometheus client library
+// if Prometheus is enabled. Otherwise, it returns no-op Metrics.
+func DefaultMetricsProvider(config *cfg.InstrumentationConfig) MetricsProvider {
+	return func(chainID string) (*cs.Metrics, *p2p.Metrics, *mempl.Metrics, *sm.Metrics, *proxy.Metrics, *blocksync.Metrics, *statesync.Metrics) {
+		if config.Prometheus {
+			return cs.PrometheusMetrics(config.Namespace, "chain_id", chainID),
+				p2p.PrometheusMetrics(config.Namespace, "chain_id", chainID),
+				mempl.PrometheusMetrics(config.Namespace, "chain_id", chainID),
+				sm.PrometheusMetrics(config.Namespace, "chain_id", chainID),
+				proxy.PrometheusMetrics(config.Namespace, "chain_id", chainID),
+				blocksync.PrometheusMetrics(config.Namespace, "chain_id", chainID),
+				statesync.PrometheusMetrics(config.Namespace, "chain_id", chainID)
+		}
+		return cs.NopMetrics(), p2p.NopMetrics(), mempl.NopMetrics(), sm.NopMetrics(), proxy.NopMetrics(), blocksync.NopMetrics(), statesync.NopMetrics()
+	}
+}
+
+type blockSyncReactor interface {
+	SwitchToBlockSync(sm.State) error
+}
+
+//------------------------------------------------------------------------------
+
+func initDBs(config *cfg.Config, dbProvider DBProvider) (blockStore *store.BlockStore, stateDB dbm.DB, err error) {
+	var blockStoreDB dbm.DB
+	blockStoreDB, err = dbProvider(&DBContext{"blockstore", config})
+	if err != nil {
+		return
+	}
+	blockStore = store.NewBlockStore(blockStoreDB)
+
+	stateDB, err = dbProvider(&DBContext{"state", config})
+	if err != nil {
+		return
+	}
+
+	return
+}
+
+func createProxyAppConns(clientCreator proxy.ClientCreator, logger log.Logger, metrics *proxy.Metrics) (proxy.AppConns, error) {
+	proxyApp := proxy.NewAppConns(clientCreator, metrics)
+	proxyApp.SetLogger(logger.With("module", "proxy"))
+	if err := proxyApp.Start(); err != nil {
+		return nil, fmt.Errorf("error starting proxy app connections: %v", err)
+	}
+	return proxyApp, nil
+}
+
+func createEventBus(logger log.Logger) *types.EventBus {
+	eventBus := types.NewEventBus()
+	eventBus.SetLogger(logger.With("module", "events"))
+	return eventBus
+}
+
+func createIndexerService(
+	config *cfg.Config,
+	chainID string,
+	dbProvider DBProvider,
+	eventBus *types.EventBus,
+	logger log.Logger,
+) (*txindex.IndexerService, txindex.TxIndexer, indexer.BlockIndexer, error) {
+	var (
+		txIndexer    txindex.TxIndexer
+		blockIndexer indexer.BlockIndexer
+	)
+
+	switch config.TxIndex.Indexer {
+	case "kv":
+		store, err := dbProvider(&DBContext{"tx_index", config})
+		if err != nil {
+			return nil, nil, nil, err
+		}
+
+		txIndexer = kv.NewTxIndex(store)
+		blockIndexer = blockidxkv.New(dbm.NewPrefixDB(store, []byte("block_events")))
+
+	case "psql":
+		if config.TxIndex.PsqlConn == "" {
+			return nil, nil, nil, errors.New(`no psql-conn is set for the "psql" indexer`)
+		}
+		es, err := psql.NewEventSink(config.TxIndex.PsqlConn, chainID)
+		if err != nil {
+			return nil, nil, nil, fmt.Errorf("creating psql indexer: %w", err)
+		}
+		txIndexer = es.TxIndexer()
+		blockIndexer = es.BlockIndexer()
+
+	default:
+		txIndexer = &null.TxIndex{}
+		blockIndexer = &blockidxnull.BlockerIndexer{}
+	}
+
+	indexerService := txindex.NewIndexerService(txIndexer, blockIndexer, eventBus, false)
+	indexerService.SetLogger(logger.With("module", "txindex"))
+
+	return indexerService, txIndexer, blockIndexer, nil
+}
+
+func doHandshake(
+	stateStore sm.Store,
+	state sm.State,
+	blockStore sm.BlockStore,
+	genDoc *types.GenesisDoc,
+	eventBus types.BlockEventPublisher,
+	proxyApp proxy.AppConns,
+	consensusLogger log.Logger,
+) error {
+	handshaker := cs.NewHandshaker(stateStore, state, blockStore, genDoc)
+	handshaker.SetLogger(consensusLogger)
+	handshaker.SetEventBus(eventBus)
+	if err := handshaker.Handshake(proxyApp); err != nil {
+		return fmt.Errorf("error during handshake: %v", err)
+	}
+	return nil
+}
+
+func logNodeStartupInfo(state sm.State, pubKey crypto.PubKey, logger log.Logger) {
+	// Log the version info.
+	logger.Info("Version info",
+		"tendermint_version", version.TMCoreSemVer,
+		"abci", version.ABCISemVer,
+		"block", version.BlockProtocol,
+		"p2p", version.P2PProtocol,
+		"commit_hash", version.TMGitCommitHash,
+	)
+
+	// If the state and software differ in block version, at least log it.
+	if state.Version.Consensus.Block != version.BlockProtocol {
+		logger.Info("Software and state have different block protocols",
+			"software", version.BlockProtocol,
+			"state", state.Version.Consensus.Block,
+		)
+	}
+
+	addr := pubKey.Address()
+	// Log whether this node is a validator or an observer
+	if state.Validators.HasAddress(addr) {
+		logger.Info("This node is a validator", "addr", addr, "pubKey", pubKey)
+	} else {
+		logger.Info("This node is not a validator", "addr", addr, "pubKey", pubKey)
+	}
+}
+
+func onlyValidatorIsUs(state sm.State, pubKey crypto.PubKey) bool {
+	if state.Validators.Size() > 1 {
+		return false
+	}
+	addr, _ := state.Validators.GetByIndex(0)
+	return bytes.Equal(pubKey.Address(), addr)
+}
+
+func createMempoolAndMempoolReactor(
+	config *cfg.Config,
+	proxyApp proxy.AppConns,
+	state sm.State,
+	memplMetrics *mempl.Metrics,
+	logger log.Logger,
+) (mempl.Mempool, p2p.Reactor) {
+	switch config.Mempool.Version {
+	case cfg.MempoolV1:
+		mp := mempoolv1.NewTxMempool(
+			logger,
+			config.Mempool,
+			proxyApp.Mempool(),
+			state.LastBlockHeight,
+			mempoolv1.WithMetrics(memplMetrics),
+			mempoolv1.WithPreCheck(sm.TxPreCheck(state)),
+			mempoolv1.WithPostCheck(sm.TxPostCheck(state)),
+		)
+
+		reactor := mempoolv1.NewReactor(
+			config.Mempool,
+			mp,
+		)
+		if config.Consensus.WaitForTxs() {
+			mp.EnableTxsAvailable()
+		}
+
+		return mp, reactor
+
+	case cfg.MempoolV0:
+		mp := mempoolv0.NewCListMempool(
+			config.Mempool,
+			proxyApp.Mempool(),
+			state.LastBlockHeight,
+			mempoolv0.WithMetrics(memplMetrics),
+			mempoolv0.WithPreCheck(sm.TxPreCheck(state)),
+			mempoolv0.WithPostCheck(sm.TxPostCheck(state)),
+		)
+
+		mp.SetLogger(logger)
+
+		reactor := mempoolv0.NewReactor(
+			config.Mempool,
+			mp,
+		)
+		if config.Consensus.WaitForTxs() {
+			mp.EnableTxsAvailable()
+		}
+
+		return mp, reactor
+
+	default:
+		return nil, nil
+	}
+}
+
+func createEvidenceReactor(config *cfg.Config, dbProvider DBProvider,
+	stateStore sm.Store, blockStore *store.BlockStore, logger log.Logger,
+) (*evidence.Reactor, *evidence.Pool, error) {
+	evidenceDB, err := dbProvider(&DBContext{"evidence", config})
+	if err != nil {
+		return nil, nil, err
+	}
+	evidenceLogger := logger.With("module", "evidence")
+	evidencePool, err := evidence.NewPool(evidenceDB, stateStore, blockStore)
+	if err != nil {
+		return nil, nil, err
+	}
+	evidenceReactor := evidence.NewReactor(evidencePool)
+	evidenceReactor.SetLogger(evidenceLogger)
+	return evidenceReactor, evidencePool, nil
+}
+
+func createBlocksyncReactor(config *cfg.Config,
+	state sm.State,
+	blockExec *sm.BlockExecutor,
+	blockStore *store.BlockStore,
+	metrics *blocksync.Metrics,
+	logger log.Logger,
+) (bcReactor *blocksync.Reactor, err error) {
+	switch config.BlockSync.Version {
+	case "v0":
+		bcReactor = blocksync.NewReactor(state.Copy(), blockExec, blockStore, metrics)
+	case "v1", "v2":
+		return nil, fmt.Errorf("block sync version %s has been deprecated. Please use v0", config.BlockSync.Version)
+	default:
+		return nil, fmt.Errorf("unknown fastsync version %s", config.BlockSync.Version)
+	}
+
+	bcReactor.SetLogger(logger.With("module", "blocksync"))
+	return bcReactor, nil
+}
+
+func createConsensusReactor(config *cfg.Config,
+	blockExec *sm.BlockExecutor,
+	blockStore sm.BlockStore,
+	mempool mempl.Mempool,
+	evidencePool *evidence.Pool,
+	privValidator types.PrivValidator,
+	csMetrics *cs.Metrics,
+	eventBus *types.EventBus,
+	consensusLogger log.Logger,
+) (*cs.Reactor, *cs.State) {
+	consensusState := cs.NewState(
+		config.Consensus,
+		blockExec,
+		blockStore,
+		mempool,
+		evidencePool,
+		cs.WithMetrics(csMetrics),
+	)
+	consensusState.SetLogger(consensusLogger)
+	if privValidator != nil {
+		consensusState.SetPrivValidator(privValidator)
+	}
+	consensusReactor := cs.NewReactor(consensusState, cs.ReactorMetrics(csMetrics))
+	consensusReactor.SetLogger(consensusLogger)
+	// services which will be publishing and/or subscribing for messages (events)
+	// consensusReactor will set it on consensusState and blockExecutor
+	consensusReactor.SetEventBus(eventBus)
+	return consensusReactor, consensusState
+}
+
+func createTransport(
+	config *cfg.Config,
+	nodeInfo p2p.NodeInfo,
+	nodeKey *p2p.NodeKey,
+	netAddr *p2p.NetAddress,
+	proxyApp proxy.AppConns,
+) (
+	*p2p.MultiplexTransport,
+	[]p2p.PeerFilterFunc,
+) {
+	var (
+		mConnConfig = p2p.MConnConfig(config.P2P)
+		transport   = p2p.NewMultiplexTransport(nodeInfo, *nodeKey, *netAddr, mConnConfig)
+		connFilters = []p2p.ConnFilterFunc{}
+		peerFilters = []p2p.PeerFilterFunc{}
+	)
+
+	if !config.P2P.AllowDuplicateIP {
+		connFilters = append(connFilters, p2p.ConnDuplicateIPFilter())
+	}
+
+	// Filter peers by addr or pubkey with an ABCI query.
+	// If the query return code is OK, add peer.
+	if config.FilterPeers {
+		connFilters = append(
+			connFilters,
+			// ABCI query for address filtering.
+			func(_ p2p.ConnSet, c net.Conn, _ []net.IP) error {
+				res, err := proxyApp.Query().QuerySync(abci.RequestQuery{
+					Path: fmt.Sprintf("/p2p/filter/addr/%s", c.RemoteAddr().String()),
+				})
+				if err != nil {
+					return err
+				}
+				if res.IsErr() {
+					return fmt.Errorf("error querying abci app: %v", res)
+				}
+
+				return nil
+			},
+		)
+
+		peerFilters = append(
+			peerFilters,
+			// ABCI query for ID filtering.
+			func(_ p2p.IPeerSet, p p2p.Peer) error {
+				res, err := proxyApp.Query().QuerySync(abci.RequestQuery{
+					Path: fmt.Sprintf("/p2p/filter/id/%s", p.ID()),
+				})
+				if err != nil {
+					return err
+				}
+				if res.IsErr() {
+					return fmt.Errorf("error querying abci app: %v", res)
+				}
+
+				return nil
+			},
+		)
+	}
+
+	p2p.MultiplexTransportConnFilters(connFilters...)(transport)
+
+	// Limit the number of incoming connections.
+	max := config.P2P.MaxNumInboundPeers + len(splitAndTrimEmpty(config.P2P.UnconditionalPeerIDs, ",", " "))
+	p2p.MultiplexTransportMaxIncomingConnections(max)(transport)
+
+	return transport, peerFilters
+}
+
+func createSwitch(config *cfg.Config,
+	p2pMetrics *p2p.Metrics,
+	mempoolReactor p2p.Reactor,
+	bcReactor p2p.Reactor,
+	stateSyncReactor *statesync.Reactor,
+	consensusReactor *cs.Reactor,
+	evidenceReactor *evidence.Reactor,
+	p2pLogger log.Logger,
+) *p2p.Switch {
+	sw := p2p.NewSwitch(
+		config.P2P,
+		p2p.WithMetrics(p2pMetrics),
+	)
+	sw.SetLogger(p2pLogger)
+	sw.AddReactor("MEMPOOL", mempoolReactor)
+	sw.AddReactor("BLOCKSYNC", bcReactor)
+	sw.AddReactor("CONSENSUS", consensusReactor)
+	sw.AddReactor("EVIDENCE", evidenceReactor)
+	sw.AddReactor("STATESYNC", stateSyncReactor)
+	return sw
+}
+
+func createAddrBook(config *cfg.Config,
+	p2pLogger log.Logger, nodeKey *p2p.NodeKey,
+) (pex.AddrBook, error) {
+	addrBook := pex.NewAddrBook(config.P2P.AddrBookFile(), config.P2P.AddrBookStrict)
+	addrBook.SetLogger(p2pLogger.With("book", config.P2P.AddrBookFile()))
+
+	// Add ourselves to addrbook to prevent dialing ourselves
+	if config.P2P.ExternalAddress != "" {
+		addr, err := p2p.NewNetAddressString(p2p.IDAddressString(nodeKey.ID(), config.P2P.ExternalAddress))
+		if err != nil {
+			return nil, fmt.Errorf("p2p.external_address is incorrect: %w", err)
+		}
+		addrBook.AddOurAddress(addr)
+	}
+	if config.P2P.ListenAddress != "" {
+		addr, err := p2p.NewNetAddressString(p2p.IDAddressString(nodeKey.ID(), config.P2P.ListenAddress))
+		if err != nil {
+			return nil, fmt.Errorf("p2p.laddr is incorrect: %w", err)
+		}
+		addrBook.AddOurAddress(addr)
+	}
+	return addrBook, nil
+}
+
+func createPEXReactor(addrBook pex.AddrBook, config *cfg.Config, logger log.Logger) *pex.Reactor {
+	// TODO persistent peers ? so we can have their DNS addrs saved
+	pexReactor := pex.NewReactor(addrBook,
+		&pex.ReactorConfig{
+			Seeds:    splitAndTrimEmpty(config.P2P.Seeds, ",", " "),
+			SeedMode: config.P2P.SeedMode,
+			// See consensus/reactor.go: blocksToContributeToBecomeGoodPeer 10000
+			// blocks assuming 10s blocks ~ 28 hours.
+			// TODO (melekes): make it dynamic based on the actual block latencies
+			// from the live network.
+			// https://github.com/tendermint/tendermint/issues/3523
+			SeedDisconnectWaitPeriod:     28 * time.Hour,
+			PersistentPeersMaxDialPeriod: config.P2P.PersistentPeersMaxDialPeriod,
+		})
+	pexReactor.SetLogger(logger.With("module", "pex"))
+	return pexReactor
+}
+
+// startStateSync starts an asynchronous state sync process, then switches to block sync mode.
+func startStateSync(ssR *statesync.Reactor, bcR blockSyncReactor, conR *cs.Reactor,
+	stateProvider statesync.StateProvider, config *cfg.StateSyncConfig, blockSync bool,
+	stateStore sm.Store, blockStore *store.BlockStore, state sm.State,
+) error {
+	ssR.Logger.Info("Starting state sync")
+
+	if stateProvider == nil {
+		var err error
+		ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+		defer cancel()
+		stateProvider, err = statesync.NewLightClientStateProvider(
+			ctx,
+			state.ChainID, state.Version, state.InitialHeight,
+			config.RPCServers, light.TrustOptions{
+				Period: config.TrustPeriod,
+				Height: config.TrustHeight,
+				Hash:   config.TrustHashBytes(),
+			}, ssR.Logger.With("module", "light"))
+		if err != nil {
+			return fmt.Errorf("failed to set up light client state provider: %w", err)
+		}
+	}
+
+	go func() {
+		state, commit, err := ssR.Sync(stateProvider, config.DiscoveryTime)
+		if err != nil {
+			ssR.Logger.Error("State sync failed", "err", err)
+			return
+		}
+		err = stateStore.Bootstrap(state)
+		if err != nil {
+			ssR.Logger.Error("Failed to bootstrap node with new state", "err", err)
+			return
+		}
+		err = blockStore.SaveSeenCommit(state.LastBlockHeight, commit)
+		if err != nil {
+			ssR.Logger.Error("Failed to store last seen commit", "err", err)
+			return
+		}
+
+		if blockSync {
+			err = bcR.SwitchToBlockSync(state)
+			if err != nil {
+				ssR.Logger.Error("Failed to switch to block sync", "err", err)
+				return
+			}
+		} else {
+			err := conR.SwitchToConsensus(state, true)
+			if err != nil {
+				ssR.Logger.Error("Failed to switch to consensus", "err", err)
+				return
+			}
+		}
+	}()
+	return nil
+}
+
+//------------------------------------------------------------------------------
+
+var genesisDocKey = []byte("genesisDoc")
+
+// LoadStateFromDBOrGenesisDocProvider attempts to load the state from the
+// database, or creates one using the given genesisDocProvider. On success this also
+// returns the genesis doc loaded through the given provider.
+func LoadStateFromDBOrGenesisDocProvider(
+	stateDB dbm.DB,
+	genesisDocProvider GenesisDocProvider,
+) (sm.State, *types.GenesisDoc, error) {
+	// Get genesis doc
+	genDoc, err := loadGenesisDoc(stateDB)
+	if err != nil {
+		genDoc, err = genesisDocProvider()
+		if err != nil {
+			return sm.State{}, nil, err
+		}
+
+		err = genDoc.ValidateAndComplete()
+		if err != nil {
+			return sm.State{}, nil, fmt.Errorf("error in genesis doc: %w", err)
+		}
+		// save genesis doc to prevent a certain class of user errors (e.g. when it
+		// was changed, accidentally or not). Also good for audit trail.
+		if err := saveGenesisDoc(stateDB, genDoc); err != nil {
+			return sm.State{}, nil, err
+		}
+	}
+	stateStore := sm.NewStore(stateDB, sm.StoreOptions{
+		DiscardABCIResponses: false,
+	})
+	state, err := stateStore.LoadFromDBOrGenesisDoc(genDoc)
+	if err != nil {
+		return sm.State{}, nil, err
+	}
+	return state, genDoc, nil
+}
+
+// panics if failed to unmarshal bytes
+func loadGenesisDoc(db dbm.DB) (*types.GenesisDoc, error) {
+	b, err := db.Get(genesisDocKey)
+	if err != nil {
+		panic(err)
+	}
+	if len(b) == 0 {
+		return nil, errors.New("genesis doc not found")
+	}
+	var genDoc *types.GenesisDoc
+	err = tmjson.Unmarshal(b, &genDoc)
+	if err != nil {
+		panic(fmt.Sprintf("Failed to load genesis doc due to unmarshaling error: %v (bytes: %X)", err, b))
+	}
+	return genDoc, nil
+}
+
+// panics if failed to marshal the given genesis document
+func saveGenesisDoc(db dbm.DB, genDoc *types.GenesisDoc) error {
+	b, err := tmjson.Marshal(genDoc)
+	if err != nil {
+		return fmt.Errorf("failed to save genesis doc due to marshaling error: %w", err)
+	}
+	if err := db.SetSync(genesisDocKey, b); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func createPrivValidatorSocketClient(
+	listenAddr,
+	chainID string,
+	logger log.Logger,
+) (types.PrivValidator, error) {
+	pve, err := privval.NewSignerListener(listenAddr, logger)
+	if err != nil {
+		return nil, fmt.Errorf("failed to start private validator: %w", err)
+	}
+
+	pvsc, err := privval.NewSignerClient(pve, chainID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to start private validator: %w", err)
+	}
+
+	const (
+		retries = 50 // 50 * 100ms = 5s total
+		timeout = 100 * time.Millisecond
+	)
+	pvscWithRetries := privval.NewRetrySignerClient(pvsc, retries, timeout)
+
+	return pvscWithRetries, nil
+}
+
+// splitAndTrimEmpty slices s into all subslices separated by sep and returns a
+// slice of the string s with all leading and trailing Unicode code points
+// contained in cutset removed. If sep is empty, SplitAndTrim splits after each
+// UTF-8 sequence. First part is equivalent to strings.SplitN with a count of
+// -1.  also filter out empty strings, only return non-empty strings.
+func splitAndTrimEmpty(s, sep, cutset string) []string {
+	if s == "" {
+		return []string{}
+	}
+
+	spl := strings.Split(s, sep)
+	nonEmptyStrings := make([]string, 0, len(spl))
+	for i := 0; i < len(spl); i++ {
+		element := strings.Trim(spl[i], cutset)
+		if element != "" {
+			nonEmptyStrings = append(nonEmptyStrings, element)
+		}
+	}
+	return nonEmptyStrings
+}
--- a/p2p/base_reactor.go
+++ b/p2p/base_reactor.go
@@ -38,13 +38,9 @@ type Reactor interface {
 	// or other reason).
 	RemovePeer(peer Peer, reason interface{})

-	// Receive is called by the switch when msgBytes is received from the peer.
-	//
-	// NOTE reactor can not keep msgBytes around after Receive completes without
-	// copying.
-	//
-	// CONTRACT: msgBytes are not nil.
-	Receive(chID byte, peer Peer, msgBytes []byte)
+	// Receive is called by the switch when an envelope is received from any connected
+	// peer on any of the channels registered by the reactor
+	Receive(Envelope)
 }

 //--------------------------------------
@@ -64,8 +60,8 @@ func NewBaseReactor(name string, impl Reactor) *BaseReactor {
 func (br *BaseReactor) SetSwitch(sw *Switch) {
 	br.Switch = sw
 }
-func (*BaseReactor) GetChannels() []*conn.ChannelDescriptor        { return nil }
-func (*BaseReactor) AddPeer(peer Peer)                             {}
-func (*BaseReactor) RemovePeer(peer Peer, reason interface{})      {}
-func (*BaseReactor) Receive(chID byte, peer Peer, msgBytes []byte) {}
-func (*BaseReactor) InitPeer(peer Peer) Peer                       { return peer }
+func (*BaseReactor) GetChannels() []*conn.ChannelDescriptor   { return nil }
+func (*BaseReactor) AddPeer(peer Peer)                        {}
+func (*BaseReactor) RemovePeer(peer Peer, reason interface{}) {}
+func (*BaseReactor) Receive(e Envelope)                       {}
+func (*BaseReactor) InitPeer(peer Peer) Peer                  { return peer }
--- a/p2p/conn/connection.go
+++ b/p2p/conn/connection.go
@@ -724,6 +724,7 @@ type ChannelDescriptor struct {
 	SendQueueCapacity   int
 	RecvBufferCapacity  int
 	RecvMessageCapacity int
+	MessageType         proto.Message
 }

 func (chDesc ChannelDescriptor) FillDefaults() (filled ChannelDescriptor) {
--- a/p2p/metrics.gen.go
+++ b/p2p/metrics.gen.go
@@ -44,15 +44,29 @@ func PrometheusMetrics(namespace string, labelsAndValues ...string) *Metrics {
 			Name:      "num_txs",
 			Help:      "Number of transactions submitted by each peer.",
 		}, append(labels, "peer_id")).With(labelsAndValues...),
+		MessageReceiveBytesTotal: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
+			Namespace: namespace,
+			Subsystem: MetricsSubsystem,
+			Name:      "message_receive_bytes_total",
+			Help:      "Number of bytes of each message type received.",
+		}, append(labels, "message_type")).With(labelsAndValues...),
+		MessageSendBytesTotal: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
+			Namespace: namespace,
+			Subsystem: MetricsSubsystem,
+			Name:      "message_send_bytes_total",
+			Help:      "Number of bytes of each message type sent.",
+		}, append(labels, "message_type")).With(labelsAndValues...),
 	}
 }

 func NopMetrics() *Metrics {
 	return &Metrics{
-		Peers:                 discard.NewGauge(),
-		PeerReceiveBytesTotal: discard.NewCounter(),
-		PeerSendBytesTotal:    discard.NewCounter(),
-		PeerPendingSendBytes:  discard.NewGauge(),
-		NumTxs:                discard.NewGauge(),
+		Peers:                    discard.NewGauge(),
+		PeerReceiveBytesTotal:    discard.NewCounter(),
+		PeerSendBytesTotal:       discard.NewCounter(),
+		PeerPendingSendBytes:     discard.NewGauge(),
+		NumTxs:                   discard.NewGauge(),
+		MessageReceiveBytesTotal: discard.NewCounter(),
+		MessageSendBytesTotal:    discard.NewCounter(),
 	}
 }
--- a/p2p/metrics.go
+++ b/p2p/metrics.go
@@ -1,6 +1,11 @@
 package p2p

 import (
+	"fmt"
+	"reflect"
+	"regexp"
+	"sync"
+
 	"github.com/go-kit/kit/metrics"
 )

@@ -10,6 +15,13 @@ const (
 	MetricsSubsystem = "p2p"
 )

+var (
+	// valueToLabelRegexp is used to find the golang package name and type name
+	// so that the name can be turned into a prometheus label where the characters
+	// in the label do not include prometheus special characters such as '*' and '.'.
+	valueToLabelRegexp = regexp.MustCompile(`\*?(\w+)\.(.*)`)
+)
+
 //go:generate go run ../scripts/metricsgen -struct=Metrics

 // Metrics contains metrics exposed by this package.
@@ -24,4 +36,43 @@ type Metrics struct {
 	PeerPendingSendBytes metrics.Gauge `metrics_labels:"peer_id"`
 	// Number of transactions submitted by each peer.
 	NumTxs metrics.Gauge `metrics_labels:"peer_id"`
+	// Number of bytes of each message type received.
+	MessageReceiveBytesTotal metrics.Counter `metrics_labels:"message_type"`
+	// Number of bytes of each message type sent.
+	MessageSendBytesTotal metrics.Counter `metrics_labels:"message_type"`
+}
+
+type metricsLabelCache struct {
+	mtx               *sync.RWMutex
+	messageLabelNames map[reflect.Type]string
+}
+
+// ValueToMetricLabel is a method that is used to produce a prometheus label value of the golang
+// type that is passed in.
+// This method uses a map on the Metrics struct so that each label name only needs
+// to be produced once to prevent expensive string operations.
+func (m *metricsLabelCache) ValueToMetricLabel(i interface{}) string {
+	t := reflect.TypeOf(i)
+	m.mtx.RLock()
+
+	if s, ok := m.messageLabelNames[t]; ok {
+		m.mtx.RUnlock()
+		return s
+	}
+	m.mtx.RUnlock()
+
+	s := t.String()
+	ss := valueToLabelRegexp.FindStringSubmatch(s)
+	l := fmt.Sprintf("%s_%s", ss[1], ss[2])
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+	m.messageLabelNames[t] = l
+	return l
+}
+
+func newMetricsLabelCache() *metricsLabelCache {
+	return &metricsLabelCache{
+		mtx:               &sync.RWMutex{},
+		messageLabelNames: map[reflect.Type]string{},
+	}
 }
--- a/p2p/mock/peer.go
+++ b/p2p/mock/peer.go
@@ -42,9 +42,9 @@ func NewPeer(ip net.IP) *Peer {
 	return mp
 }

-func (mp *Peer) FlushStop()                              { mp.Stop() } //nolint:errcheck //ignore error
-func (mp *Peer) TrySend(chID byte, msgBytes []byte) bool { return true }
-func (mp *Peer) Send(chID byte, msgBytes []byte) bool    { return true }
+func (mp *Peer) FlushStop()                  { mp.Stop() } //nolint:errcheck //ignore error
+func (mp *Peer) TrySend(e p2p.Envelope) bool { return true }
+func (mp *Peer) Send(e p2p.Envelope) bool    { return true }
 func (mp *Peer) NodeInfo() p2p.NodeInfo {
 	return p2p.DefaultNodeInfo{
 		DefaultNodeID: mp.addr.ID,
--- a/p2p/mock/reactor.go
+++ b/p2p/mock/reactor.go
@@ -19,7 +19,7 @@ func NewReactor() *Reactor {
 	return r
 }

-func (r *Reactor) GetChannels() []*conn.ChannelDescriptor            { return r.Channels }
-func (r *Reactor) AddPeer(peer p2p.Peer)                             {}
-func (r *Reactor) RemovePeer(peer p2p.Peer, reason interface{})      {}
-func (r *Reactor) Receive(chID byte, peer p2p.Peer, msgBytes []byte) {}
+func (r *Reactor) GetChannels() []*conn.ChannelDescriptor       { return r.Channels }
+func (r *Reactor) AddPeer(peer p2p.Peer)                        {}
+func (r *Reactor) RemovePeer(peer p2p.Peer, reason interface{}) {}
+func (r *Reactor) Receive(e p2p.Envelope)                       {}
--- a/p2p/mocks/peer.go
+++ b/p2p/mocks/peer.go
@@ -234,13 +234,13 @@ func (_m *Peer) Reset() error {
 	return r0
 }

-// Send provides a mock function with given fields: _a0, _a1
-func (_m *Peer) Send(_a0 byte, _a1 []byte) bool {
-	ret := _m.Called(_a0, _a1)
+// Send provides a mock function with given fields: _a0
+func (_m *Peer) Send(_a0 p2p.Envelope) bool {
+	ret := _m.Called(_a0)

 	var r0 bool
-	if rf, ok := ret.Get(0).(func(byte, []byte) bool); ok {
-		r0 = rf(_a0, _a1)
+	if rf, ok := ret.Get(0).(func(p2p.Envelope) bool); ok {
+		r0 = rf(_a0)
 	} else {
 		r0 = ret.Get(0).(bool)
 	}
@@ -335,13 +335,13 @@ func (_m *Peer) String() string {
 	return r0
 }

-// TrySend provides a mock function with given fields: _a0, _a1
-func (_m *Peer) TrySend(_a0 byte, _a1 []byte) bool {
-	ret := _m.Called(_a0, _a1)
+// TrySend provides a mock function with given fields: _a0
+func (_m *Peer) TrySend(_a0 p2p.Envelope) bool {
+	ret := _m.Called(_a0)

 	var r0 bool
-	if rf, ok := ret.Get(0).(func(byte, []byte) bool); ok {
-		r0 = rf(_a0, _a1)
+	if rf, ok := ret.Get(0).(func(p2p.Envelope) bool); ok {
+		r0 = rf(_a0)
 	} else {
 		r0 = ret.Get(0).(bool)
 	}
--- a/p2p/peer.go
+++ b/p2p/peer.go
@@ -3,8 +3,11 @@ package p2p
 import (
 	"fmt"
 	"net"
+	"reflect"
 	"time"

+	"github.com/cosmos/gogoproto/proto"
+
 	"github.com/tendermint/tendermint/libs/cmap"
 	"github.com/tendermint/tendermint/libs/log"
 	"github.com/tendermint/tendermint/libs/service"
@@ -34,8 +37,8 @@ type Peer interface {
 	Status() tmconn.ConnectionStatus
 	SocketAddr() *NetAddress // actual address of the socket

-	Send(byte, []byte) bool
-	TrySend(byte, []byte) bool
+	Send(Envelope) bool
+	TrySend(Envelope) bool

 	Set(string, interface{})
 	Get(string) interface{}
@@ -120,6 +123,7 @@ type peer struct {

 	metrics       *Metrics
 	metricsTicker *time.Ticker
+	mlc           *metricsLabelCache

 	// When removal of a peer fails, we set this flag
 	removalAttemptFailed bool
@@ -132,8 +136,10 @@ func newPeer(
 	mConfig tmconn.MConnConfig,
 	nodeInfo NodeInfo,
 	reactorsByCh map[byte]Reactor,
+	msgTypeByChID map[byte]proto.Message,
 	chDescs []*tmconn.ChannelDescriptor,
 	onPeerError func(Peer, interface{}),
+	mlc *metricsLabelCache,
 	options ...PeerOption,
 ) *peer {
 	p := &peer{
@@ -143,12 +149,14 @@ func newPeer(
 		Data:          cmap.NewCMap(),
 		metricsTicker: time.NewTicker(metricsTickerDuration),
 		metrics:       NopMetrics(),
+		mlc:           mlc,
 	}

 	p.mconn = createMConnection(
 		pc.conn,
 		p,
 		reactorsByCh,
+		msgTypeByChID,
 		chDescs,
 		onPeerError,
 		mConfig,
@@ -249,40 +257,39 @@ func (p *peer) Status() tmconn.ConnectionStatus {

 // Send msg bytes to the channel identified by chID byte. Returns false if the
 // send queue is full after timeout, specified by MConnection.
-func (p *peer) Send(chID byte, msgBytes []byte) bool {
-	if !p.IsRunning() {
-		// see Switch#Broadcast, where we fetch the list of peers and loop over
-		// them - while we're looping, one peer may be removed and stopped.
-		return false
-	} else if !p.hasChannel(chID) {
-		return false
-	}
-	res := p.mconn.Send(chID, msgBytes)
-	if res {
-		labels := []string{
-			"peer_id", string(p.ID()),
-			"chID", fmt.Sprintf("%#x", chID),
-		}
-		p.metrics.PeerSendBytesTotal.With(labels...).Add(float64(len(msgBytes)))
-	}
-	return res
+func (p *peer) Send(e Envelope) bool {
+	return p.send(e.ChannelID, e.Message, p.mconn.Send)
 }

 // TrySend msg bytes to the channel identified by chID byte. Immediately returns
 // false if the send queue is full.
-func (p *peer) TrySend(chID byte, msgBytes []byte) bool {
+func (p *peer) TrySend(e Envelope) bool {
+	return p.send(e.ChannelID, e.Message, p.mconn.TrySend)
+}
+
+func (p *peer) send(chID byte, msg proto.Message, sendFunc func(byte, []byte) bool) bool {
 	if !p.IsRunning() {
 		return false
 	} else if !p.hasChannel(chID) {
 		return false
 	}
-	res := p.mconn.TrySend(chID, msgBytes)
+	metricLabelValue := p.mlc.ValueToMetricLabel(msg)
+	if w, ok := msg.(Wrapper); ok {
+		msg = w.Wrap()
+	}
+	msgBytes, err := proto.Marshal(msg)
+	if err != nil {
+		p.Logger.Error("marshaling message to send", "error", err)
+		return false
+	}
+	res := sendFunc(chID, msgBytes)
 	if res {
 		labels := []string{
 			"peer_id", string(p.ID()),
 			"chID", fmt.Sprintf("%#x", chID),
 		}
 		p.metrics.PeerSendBytesTotal.With(labels...).Add(float64(len(msgBytes)))
+		p.metrics.MessageSendBytesTotal.With("message_type", metricLabelValue).Add(float64(len(msgBytes)))
 	}
 	return res
 }
@@ -384,6 +391,7 @@ func createMConnection(
 	conn net.Conn,
 	p *peer,
 	reactorsByCh map[byte]Reactor,
+	msgTypeByChID map[byte]proto.Message,
 	chDescs []*tmconn.ChannelDescriptor,
 	onPeerError func(Peer, interface{}),
 	config tmconn.MConnConfig,
@@ -396,12 +404,29 @@ func createMConnection(
 			// which does onPeerError.
 			panic(fmt.Sprintf("Unknown channel %X", chID))
 		}
+		mt := msgTypeByChID[chID]
+		msg := proto.Clone(mt)
+		err := proto.Unmarshal(msgBytes, msg)
+		if err != nil {
+			panic(fmt.Errorf("unmarshaling message: %s into type: %s", err, reflect.TypeOf(mt)))
+		}
 		labels := []string{
 			"peer_id", string(p.ID()),
 			"chID", fmt.Sprintf("%#x", chID),
 		}
+		if w, ok := msg.(Unwrapper); ok {
+			msg, err = w.Unwrap()
+			if err != nil {
+				panic(fmt.Errorf("unwrapping message: %s", err))
+			}
+		}
 		p.metrics.PeerReceiveBytesTotal.With(labels...).Add(float64(len(msgBytes)))
-		reactor.Receive(chID, p, msgBytes)
+		p.metrics.MessageReceiveBytesTotal.With("message_type", p.mlc.ValueToMetricLabel(msg)).Add(float64(len(msgBytes)))
+		reactor.Receive(Envelope{
+			ChannelID: chID,
+			Src:       p,
+			Message:   msg,
+		})
 	}

 	onError := func(r interface{}) {
--- a/p2p/peer_set_test.go
+++ b/p2p/peer_set_test.go
@@ -18,22 +18,22 @@ type mockPeer struct {
 	id ID
 }

-func (mp *mockPeer) FlushStop()                              { mp.Stop() } //nolint:errcheck // ignore error
-func (mp *mockPeer) TrySend(chID byte, msgBytes []byte) bool { return true }
-func (mp *mockPeer) Send(chID byte, msgBytes []byte) bool    { return true }
-func (mp *mockPeer) NodeInfo() NodeInfo                      { return DefaultNodeInfo{} }
-func (mp *mockPeer) Status() ConnectionStatus                { return ConnectionStatus{} }
-func (mp *mockPeer) ID() ID                                  { return mp.id }
-func (mp *mockPeer) IsOutbound() bool                        { return false }
-func (mp *mockPeer) IsPersistent() bool                      { return true }
-func (mp *mockPeer) Get(s string) interface{}                { return s }
-func (mp *mockPeer) Set(string, interface{})                 {}
-func (mp *mockPeer) RemoteIP() net.IP                        { return mp.ip }
-func (mp *mockPeer) SocketAddr() *NetAddress                 { return nil }
-func (mp *mockPeer) RemoteAddr() net.Addr                    { return &net.TCPAddr{IP: mp.ip, Port: 8800} }
-func (mp *mockPeer) CloseConn() error                        { return nil }
-func (mp *mockPeer) SetRemovalFailed()                       {}
-func (mp *mockPeer) GetRemovalFailed() bool                  { return false }
+func (mp *mockPeer) FlushStop()               { mp.Stop() } //nolint:errcheck // ignore error
+func (mp *mockPeer) TrySend(e Envelope) bool  { return true }
+func (mp *mockPeer) Send(e Envelope) bool     { return true }
+func (mp *mockPeer) NodeInfo() NodeInfo       { return DefaultNodeInfo{} }
+func (mp *mockPeer) Status() ConnectionStatus { return ConnectionStatus{} }
+func (mp *mockPeer) ID() ID                   { return mp.id }
+func (mp *mockPeer) IsOutbound() bool         { return false }
+func (mp *mockPeer) IsPersistent() bool       { return true }
+func (mp *mockPeer) Get(s string) interface{} { return s }
+func (mp *mockPeer) Set(string, interface{})  {}
+func (mp *mockPeer) RemoteIP() net.IP         { return mp.ip }
+func (mp *mockPeer) SocketAddr() *NetAddress  { return nil }
+func (mp *mockPeer) RemoteAddr() net.Addr     { return &net.TCPAddr{IP: mp.ip, Port: 8800} }
+func (mp *mockPeer) CloseConn() error         { return nil }
+func (mp *mockPeer) SetRemovalFailed()        {}
+func (mp *mockPeer) GetRemovalFailed() bool   { return false }

 // Returns a mock peer
 func newMockPeer(ip net.IP) *mockPeer {
--- a/p2p/peer_test.go
+++ b/p2p/peer_test.go
@@ -7,6 +7,7 @@ import (
 	"testing"
 	"time"

+	"github.com/cosmos/gogoproto/proto"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"

@@ -14,6 +15,7 @@ import (
 	"github.com/tendermint/tendermint/crypto/ed25519"
 	"github.com/tendermint/tendermint/libs/bytes"
 	"github.com/tendermint/tendermint/libs/log"
+	"github.com/tendermint/tendermint/proto/tendermint/p2p"

 	"github.com/tendermint/tendermint/config"
 	tmconn "github.com/tendermint/tendermint/p2p/conn"
@@ -70,7 +72,7 @@ func TestPeerSend(t *testing.T) {
 	})

 	assert.True(p.CanSend(testCh))
-	assert.True(p.Send(testCh, []byte("Asylum")))
+	assert.True(p.Send(Envelope{ChannelID: testCh, Message: &p2p.Message{}}))
 }

 func createOutboundPeerAndPerformHandshake(
@@ -82,6 +84,9 @@ func createOutboundPeerAndPerformHandshake(
 		{ID: testCh, Priority: 1},
 	}
 	reactorsByCh := map[byte]Reactor{testCh: NewTestReactor(chDescs, true)}
+	msgTypeByChID := map[byte]proto.Message{
+		testCh: &p2p.Message{},
+	}
 	pk := ed25519.GenPrivKey()
 	pc, err := testOutboundPeerConn(addr, config, false, pk)
 	if err != nil {
@@ -94,7 +99,7 @@ func createOutboundPeerAndPerformHandshake(
 		return nil, err
 	}

-	p := newPeer(pc, mConfig, peerNodeInfo, reactorsByCh, chDescs, func(p Peer, r interface{}) {})
+	p := newPeer(pc, mConfig, peerNodeInfo, reactorsByCh, msgTypeByChID, chDescs, func(p Peer, r interface{}) {}, newMetricsLabelCache())
 	p.SetLogger(log.TestingLogger().With("peer", addr))
 	return p, nil
 }
--- a/p2p/pex/pex_reactor.go
+++ b/p2p/pex/pex_reactor.go
@@ -6,8 +6,6 @@ import (
 	"sync"
 	"time"

-	"github.com/cosmos/gogoproto/proto"
-
 	"github.com/tendermint/tendermint/libs/cmap"
 	tmmath "github.com/tendermint/tendermint/libs/math"
 	tmrand "github.com/tendermint/tendermint/libs/rand"
@@ -184,6 +182,7 @@ func (r *Reactor) GetChannels() []*conn.ChannelDescriptor {
 			Priority:            1,
 			SendQueueCapacity:   10,
 			RecvMessageCapacity: maxMsgSize,
+			MessageType:         &tmp2p.Message{},
 		},
 	}
 }
@@ -236,16 +235,10 @@ func (r *Reactor) logErrAddrBook(err error) {
 }

 // Receive implements Reactor by handling incoming PEX messages.
-func (r *Reactor) Receive(chID byte, src Peer, msgBytes []byte) {
-	msg, err := decodeMsg(msgBytes)
-	if err != nil {
-		r.Logger.Error("Error decoding message", "src", src, "chId", chID, "err", err)
-		r.Switch.StopPeerForError(src, err)
-		return
-	}
-	r.Logger.Debug("Received message", "src", src, "chId", chID, "msg", msg)
+func (r *Reactor) Receive(e p2p.Envelope) {
+	r.Logger.Debug("Received message", "src", e.Src, "chId", e.ChannelID, "msg", e.Message)

-	switch msg := msg.(type) {
+	switch msg := e.Message.(type) {
 	case *tmp2p.PexRequest:

 		// NOTE: this is a prime candidate for amplification attacks,
@@ -255,8 +248,8 @@ func (r *Reactor) Receive(chID byte, src Peer, msgBytes []byte) {

 		// If we're a seed and this is an inbound peer,
 		// respond once and disconnect.
-		if r.config.SeedMode && !src.IsOutbound() {
-			id := string(src.ID())
+		if r.config.SeedMode && !e.Src.IsOutbound() {
+			id := string(e.Src.ID())
 			v := r.lastReceivedRequests.Get(id)
 			if v != nil {
 				// FlushStop/StopPeer are already
@@ -266,36 +259,36 @@ func (r *Reactor) Receive(chID byte, src Peer, msgBytes []byte) {
 			r.lastReceivedRequests.Set(id, time.Now())

 			// Send addrs and disconnect
-			r.SendAddrs(src, r.book.GetSelectionWithBias(biasToSelectNewPeers))
+			r.SendAddrs(e.Src, r.book.GetSelectionWithBias(biasToSelectNewPeers))
 			go func() {
 				// In a go-routine so it doesn't block .Receive.
-				src.FlushStop()
-				r.Switch.StopPeerGracefully(src)
+				e.Src.FlushStop()
+				r.Switch.StopPeerGracefully(e.Src)
 			}()

 		} else {
 			// Check we're not receiving requests too frequently.
-			if err := r.receiveRequest(src); err != nil {
-				r.Switch.StopPeerForError(src, err)
-				r.book.MarkBad(src.SocketAddr(), defaultBanTime)
+			if err := r.receiveRequest(e.Src); err != nil {
+				r.Switch.StopPeerForError(e.Src, err)
+				r.book.MarkBad(e.Src.SocketAddr(), defaultBanTime)
 				return
 			}
-			r.SendAddrs(src, r.book.GetSelection())
+			r.SendAddrs(e.Src, r.book.GetSelection())
 		}

 	case *tmp2p.PexAddrs:
 		// If we asked for addresses, add them to the book
 		addrs, err := p2p.NetAddressesFromProto(msg.Addrs)
 		if err != nil {
-			r.Switch.StopPeerForError(src, err)
-			r.book.MarkBad(src.SocketAddr(), defaultBanTime)
+			r.Switch.StopPeerForError(e.Src, err)
+			r.book.MarkBad(e.Src.SocketAddr(), defaultBanTime)
 			return
 		}
-		err = r.ReceiveAddrs(addrs, src)
+		err = r.ReceiveAddrs(addrs, e.Src)
 		if err != nil {
-			r.Switch.StopPeerForError(src, err)
+			r.Switch.StopPeerForError(e.Src, err)
 			if err == ErrUnsolicitedList {
-				r.book.MarkBad(src.SocketAddr(), defaultBanTime)
+				r.book.MarkBad(e.Src.SocketAddr(), defaultBanTime)
 			}
 			return
 		}
@@ -348,7 +341,10 @@ func (r *Reactor) RequestAddrs(p Peer) {
 	}
 	r.Logger.Debug("Request addrs", "from", p)
 	r.requestsSent.Set(id, struct{}{})
-	p.Send(PexChannel, mustEncode(&tmp2p.PexRequest{}))
+	p.Send(p2p.Envelope{
+		ChannelID: PexChannel,
+		Message:   &tmp2p.PexRequest{},
+	})
 }

 // ReceiveAddrs adds the given addrs to the addrbook if theres an open
@@ -406,7 +402,11 @@ func (r *Reactor) ReceiveAddrs(addrs []*p2p.NetAddress, src Peer) error {

 // SendAddrs sends addrs to the peer.
 func (r *Reactor) SendAddrs(p Peer, netAddrs []*p2p.NetAddress) {
-	p.Send(PexChannel, mustEncode(&tmp2p.PexAddrs{Addrs: p2p.NetAddressesToProto(netAddrs)}))
+	e := p2p.Envelope{
+		ChannelID: PexChannel,
+		Message:   &tmp2p.PexAddrs{Addrs: p2p.NetAddressesToProto(netAddrs)},
+	}
+	p.Send(e)
 }

 // SetEnsurePeersPeriod sets period to ensure peers connected.
@@ -763,43 +763,3 @@ func markAddrInBookBasedOnErr(addr *p2p.NetAddress, book AddrBook, err error) {
 		book.MarkAttempt(addr)
 	}
 }
-
-//-----------------------------------------------------------------------------
-// Messages
-
-// mustEncode proto encodes a tmp2p.Message
-func mustEncode(pb proto.Message) []byte {
-	msg := tmp2p.Message{}
-	switch pb := pb.(type) {
-	case *tmp2p.PexRequest:
-		msg.Sum = &tmp2p.Message_PexRequest{PexRequest: pb}
-	case *tmp2p.PexAddrs:
-		msg.Sum = &tmp2p.Message_PexAddrs{PexAddrs: pb}
-	default:
-		panic(fmt.Sprintf("Unknown message type %T", pb))
-	}
-
-	bz, err := msg.Marshal()
-	if err != nil {
-		panic(fmt.Errorf("unable to marshal %T: %w", pb, err))
-	}
-	return bz
-}
-
-func decodeMsg(bz []byte) (proto.Message, error) {
-	pb := &tmp2p.Message{}
-
-	err := pb.Unmarshal(bz)
-	if err != nil {
-		return nil, err
-	}
-
-	switch msg := pb.Sum.(type) {
-	case *tmp2p.Message_PexRequest:
-		return msg.PexRequest, nil
-	case *tmp2p.Message_PexAddrs:
-		return msg.PexAddrs, nil
-	default:
-		return nil, fmt.Errorf("unknown message: %T", msg)
-	}
-}
--- a/p2p/pex/pex_reactor_test.go
+++ b/p2p/pex/pex_reactor_test.go
@@ -131,12 +131,11 @@ func TestPEXReactorReceive(t *testing.T) {
 	r.RequestAddrs(peer)

 	size := book.Size()
-	msg := mustEncode(&tmp2p.PexAddrs{Addrs: []tmp2p.NetAddress{peer.SocketAddr().ToProto()}})
-	r.Receive(PexChannel, peer, msg)
+	msg := &tmp2p.PexAddrs{Addrs: []tmp2p.NetAddress{peer.SocketAddr().ToProto()}}
+	r.Receive(p2p.Envelope{ChannelID: PexChannel, Src: peer, Message: msg})
 	assert.Equal(t, size+1, book.Size())

-	msg = mustEncode(&tmp2p.PexRequest{})
-	r.Receive(PexChannel, peer, msg) // should not panic.
+	r.Receive(p2p.Envelope{ChannelID: PexChannel, Src: peer, Message: &tmp2p.PexRequest{}})
 }

 func TestPEXReactorRequestMessageAbuse(t *testing.T) {
@@ -155,20 +154,19 @@ func TestPEXReactorRequestMessageAbuse(t *testing.T) {
 	require.True(t, book.HasAddress(peerAddr))

 	id := string(peer.ID())
-	msg := mustEncode(&tmp2p.PexRequest{})

 	// first time creates the entry
-	r.Receive(PexChannel, peer, msg)
+	r.Receive(p2p.Envelope{ChannelID: PexChannel, Src: peer, Message: &tmp2p.PexRequest{}})
 	assert.True(t, r.lastReceivedRequests.Has(id))
 	assert.True(t, sw.Peers().Has(peer.ID()))

 	// next time sets the last time value
-	r.Receive(PexChannel, peer, msg)
+	r.Receive(p2p.Envelope{ChannelID: PexChannel, Src: peer, Message: &tmp2p.PexRequest{}})
 	assert.True(t, r.lastReceivedRequests.Has(id))
 	assert.True(t, sw.Peers().Has(peer.ID()))

 	// third time is too many too soon - peer is removed
-	r.Receive(PexChannel, peer, msg)
+	r.Receive(p2p.Envelope{ChannelID: PexChannel, Src: peer, Message: &tmp2p.PexRequest{}})
 	assert.False(t, r.lastReceivedRequests.Has(id))
 	assert.False(t, sw.Peers().Has(peer.ID()))
 	assert.True(t, book.IsBanned(peerAddr))
@@ -192,15 +190,15 @@ func TestPEXReactorAddrsMessageAbuse(t *testing.T) {
 	assert.True(t, r.requestsSent.Has(id))
 	assert.True(t, sw.Peers().Has(peer.ID()))

-	msg := mustEncode(&tmp2p.PexAddrs{Addrs: []tmp2p.NetAddress{peer.SocketAddr().ToProto()}})
+	msg := &tmp2p.PexAddrs{Addrs: []tmp2p.NetAddress{peer.SocketAddr().ToProto()}}

 	// receive some addrs. should clear the request
-	r.Receive(PexChannel, peer, msg)
+	r.Receive(p2p.Envelope{ChannelID: PexChannel, Src: peer, Message: msg})
 	assert.False(t, r.requestsSent.Has(id))
 	assert.True(t, sw.Peers().Has(peer.ID()))

 	// receiving more unsolicited addrs causes a disconnect and ban
-	r.Receive(PexChannel, peer, msg)
+	r.Receive(p2p.Envelope{ChannelID: PexChannel, Src: peer, Message: msg})
 	assert.False(t, sw.Peers().Has(peer.ID()))
 	assert.True(t, book.IsBanned(peer.SocketAddr()))
 }
@@ -486,8 +484,12 @@ func TestPEXReactorDoesNotAddPrivatePeersToAddrBook(t *testing.T) {
 	pexR.RequestAddrs(peer)

 	size := book.Size()
-	msg := mustEncode(&tmp2p.PexAddrs{Addrs: []tmp2p.NetAddress{peer.SocketAddr().ToProto()}})
-	pexR.Receive(PexChannel, peer, msg)
+	msg := &tmp2p.PexAddrs{Addrs: []tmp2p.NetAddress{peer.SocketAddr().ToProto()}}
+	pexR.Receive(p2p.Envelope{
+		ChannelID: PexChannel,
+		Src:       peer,
+		Message:   msg,
+	})
 	assert.Equal(t, size, book.Size())

 	pexR.AddPeer(peer)
@@ -695,7 +697,9 @@ func TestPexVectors(t *testing.T) {
 	for _, tc := range testCases {
 		tc := tc

-		bz := mustEncode(tc.msg)
+		w := tc.msg.(p2p.Wrapper).Wrap()
+		bz, err := proto.Marshal(w)
+		require.NoError(t, err)

 		require.Equal(t, tc.expBytes, hex.EncodeToString(bz), tc.testName)
 	}
--- a/p2p/switch.go
+++ b/p2p/switch.go
@@ -1,14 +1,15 @@
 package p2p

 import (
+	"errors"
 	"fmt"
 	"math"
 	"sync"
 	"time"

+	"github.com/cosmos/gogoproto/proto"
 	"github.com/tendermint/tendermint/config"
 	"github.com/tendermint/tendermint/libs/cmap"
-	"github.com/tendermint/tendermint/libs/log"
 	"github.com/tendermint/tendermint/libs/rand"
 	"github.com/tendermint/tendermint/libs/service"
 	"github.com/tendermint/tendermint/p2p/conn"
@@ -69,16 +70,17 @@ type PeerFilterFunc func(IPeerSet, Peer) error
 type Switch struct {
 	service.BaseService

-	config       *config.P2PConfig
-	reactors     map[string]Reactor
-	chDescs      []*conn.ChannelDescriptor
-	reactorsByCh map[byte]Reactor
-	peers        *PeerSet
-	dialing      *cmap.CMap
-	reconnecting *cmap.CMap
-	nodeInfo     NodeInfo // our node info
-	nodeKey      *NodeKey // our node privkey
-	addrBook     AddrBook
+	config        *config.P2PConfig
+	reactors      map[string]Reactor
+	chDescs       []*conn.ChannelDescriptor
+	reactorsByCh  map[byte]Reactor
+	msgTypeByChID map[byte]proto.Message
+	peers         *PeerSet
+	dialing       *cmap.CMap
+	reconnecting  *cmap.CMap
+	nodeInfo      NodeInfo // our node info
+	nodeKey       *NodeKey // our node privkey
+	addrBook      AddrBook
 	// peers addresses with whom we'll maintain constant connection
 	persistentPeersAddrs []*NetAddress
 	unconditionalPeerIDs map[ID]struct{}
@@ -91,6 +93,7 @@ type Switch struct {
 	rng *rand.Rand // seed for randomizing dial times and orders

 	metrics *Metrics
+	mlc     *metricsLabelCache
 }

 // NetAddress returns the address the switch is listening on.
@@ -105,22 +108,23 @@ type SwitchOption func(*Switch)
 // NewSwitch creates a new Switch with the given config.
 func NewSwitch(
 	cfg *config.P2PConfig,
-	transport Transport,
 	options ...SwitchOption,
 ) *Switch {
+
 	sw := &Switch{
 		config:               cfg,
 		reactors:             make(map[string]Reactor),
 		chDescs:              make([]*conn.ChannelDescriptor, 0),
 		reactorsByCh:         make(map[byte]Reactor),
+		msgTypeByChID:        make(map[byte]proto.Message),
 		peers:                NewPeerSet(),
 		dialing:              cmap.NewCMap(),
 		reconnecting:         cmap.NewCMap(),
 		metrics:              NopMetrics(),
-		transport:            transport,
 		filterTimeout:        defaultFilterTimeout,
 		persistentPeersAddrs: make([]*NetAddress, 0),
 		unconditionalPeerIDs: make(map[ID]struct{}),
+		mlc:                  newMetricsLabelCache(),
 	}

 	// Ensure we have a completely undeterministic PRNG.
@@ -164,6 +168,7 @@ func (sw *Switch) AddReactor(name string, reactor Reactor) Reactor {
 		}
 		sw.chDescs = append(sw.chDescs, chDesc)
 		sw.reactorsByCh[chID] = reactor
+		sw.msgTypeByChID[chID] = chDesc.MessageType
 	}
 	sw.reactors[name] = reactor
 	reactor.SetSwitch(sw)
@@ -182,6 +187,7 @@ func (sw *Switch) RemoveReactor(name string, reactor Reactor) {
 			}
 		}
 		delete(sw.reactorsByCh, chDesc.ID)
+		delete(sw.msgTypeByChID, chDesc.ID)
 	}
 	delete(sw.reactors, name)
 	reactor.SetSwitch(nil)
@@ -217,11 +223,30 @@ func (sw *Switch) SetNodeKey(nodeKey *NodeKey) {
 	sw.nodeKey = nodeKey
 }

+func (sw *Switch) SetPeerFilters(filters ...PeerFilterFunc) {
+	sw.peerFilters = filters
+}
+
+func (sw *Switch) SetTransport(transport Transport) {
+	if sw.IsRunning() {
+		panic("cannot set transport while switch is running")
+	}
+	sw.transport = transport
+}
+
 //---------------------------------------------------------------------
 // Service start/stop

 // OnStart implements BaseService. It starts all the reactors and peers.
 func (sw *Switch) OnStart() error {
+	if sw.transport == nil {
+		return errors.New("transport not set")
+	}
+
+	if err := sw.transport.Start(); err != nil {
+		return err
+	}
+
 	// Start reactors
 	for _, reactor := range sw.reactors {
 		err := reactor.Start()
@@ -250,6 +275,10 @@ func (sw *Switch) OnStop() {
 			sw.Logger.Error("error while stopped reactor", "reactor", reactor, "error", err)
 		}
 	}
+
+	if err := sw.transport.Stop(); err != nil {
+		sw.Logger.Error("closing transport", "err", err)
+	}
 }

 //---------------------------------------------------------------------
@@ -261,8 +290,8 @@ func (sw *Switch) OnStop() {
 // closed once msg bytes are sent to all peers (or time out).
 //
 // NOTE: Broadcast uses goroutines, so order of broadcast may not be preserved.
-func (sw *Switch) Broadcast(chID byte, msgBytes []byte) chan bool {
-	sw.Logger.Debug("Broadcast", "channel", chID, "msgBytes", log.NewLazySprintf("%X", msgBytes))
+func (sw *Switch) Broadcast(e Envelope) chan bool {
+	sw.Logger.Debug("Broadcast", "channel", e.ChannelID)

 	peers := sw.peers.List()
 	var wg sync.WaitGroup
@@ -272,7 +301,7 @@ func (sw *Switch) Broadcast(chID byte, msgBytes []byte) chan bool {
 	for _, peer := range peers {
 		go func(p Peer) {
 			defer wg.Done()
-			success := p.Send(chID, msgBytes)
+			success := p.Send(e)
 			successChan <- success
 		}(peer)
 	}
@@ -623,11 +652,13 @@ func (sw *Switch) IsPeerPersistent(na *NetAddress) bool {
 func (sw *Switch) acceptRoutine() {
 	for {
 		p, err := sw.transport.Accept(peerConfig{
-			chDescs:      sw.chDescs,
-			onPeerError:  sw.StopPeerForError,
-			reactorsByCh: sw.reactorsByCh,
-			metrics:      sw.metrics,
-			isPersistent: sw.IsPeerPersistent,
+			chDescs:       sw.chDescs,
+			onPeerError:   sw.StopPeerForError,
+			reactorsByCh:  sw.reactorsByCh,
+			msgTypeByChID: sw.msgTypeByChID,
+			metrics:       sw.metrics,
+			mlc:           sw.mlc,
+			isPersistent:  sw.IsPeerPersistent,
 		})
 		if err != nil {
 			switch err := err.(type) {
@@ -726,11 +757,13 @@ func (sw *Switch) addOutboundPeerWithConfig(
 	}

 	p, err := sw.transport.Dial(*addr, peerConfig{
-		chDescs:      sw.chDescs,
-		onPeerError:  sw.StopPeerForError,
-		isPersistent: sw.IsPeerPersistent,
-		reactorsByCh: sw.reactorsByCh,
-		metrics:      sw.metrics,
+		chDescs:       sw.chDescs,
+		onPeerError:   sw.StopPeerForError,
+		isPersistent:  sw.IsPeerPersistent,
+		reactorsByCh:  sw.reactorsByCh,
+		msgTypeByChID: sw.msgTypeByChID,
+		metrics:       sw.metrics,
+		mlc:           sw.mlc,
 	})
 	if err != nil {
 		if e, ok := err.(ErrRejected); ok {
--- a/p2p/switch_test.go
+++ b/p2p/switch_test.go
@@ -14,6 +14,7 @@ import (
 	"testing"
 	"time"

+	"github.com/cosmos/gogoproto/proto"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
@@ -21,8 +22,10 @@ import (
 	"github.com/tendermint/tendermint/config"
 	"github.com/tendermint/tendermint/crypto/ed25519"
 	"github.com/tendermint/tendermint/libs/log"
+	"github.com/tendermint/tendermint/libs/service"
 	tmsync "github.com/tendermint/tendermint/libs/sync"
 	"github.com/tendermint/tendermint/p2p/conn"
+	p2pproto "github.com/tendermint/tendermint/proto/tendermint/p2p"
 )

 var (
@@ -36,9 +39,8 @@ func init() {
 }

 type PeerMessage struct {
-	PeerID  ID
-	Bytes   []byte
-	Counter int
+	Contents proto.Message
+	Counter  int
 }

 type TestReactor struct {
@@ -70,12 +72,12 @@ func (tr *TestReactor) AddPeer(peer Peer) {}

 func (tr *TestReactor) RemovePeer(peer Peer, reason interface{}) {}

-func (tr *TestReactor) Receive(chID byte, peer Peer, msgBytes []byte) {
+func (tr *TestReactor) Receive(e Envelope) {
 	if tr.logMessages {
 		tr.mtx.Lock()
 		defer tr.mtx.Unlock()
-		// fmt.Printf("Received: %X, %X\n", chID, msgBytes)
-		tr.msgsReceived[chID] = append(tr.msgsReceived[chID], PeerMessage{peer.ID(), msgBytes, tr.msgsCounter})
+		fmt.Printf("Received: %X, %X\n", e.ChannelID, e.Message)
+		tr.msgsReceived[e.ChannelID] = append(tr.msgsReceived[e.ChannelID], PeerMessage{Contents: e.Message, Counter: tr.msgsCounter})
 		tr.msgsCounter++
 	}
 }
@@ -103,12 +105,12 @@ func initSwitchFunc(i int, sw *Switch) *Switch {

 	// Make two reactors of two channels each
 	sw.AddReactor("foo", NewTestReactor([]*conn.ChannelDescriptor{
-		{ID: byte(0x00), Priority: 10},
-		{ID: byte(0x01), Priority: 10},
+		{ID: byte(0x00), Priority: 10, MessageType: &p2pproto.Message{}},
+		{ID: byte(0x01), Priority: 10, MessageType: &p2pproto.Message{}},
 	}, true))
 	sw.AddReactor("bar", NewTestReactor([]*conn.ChannelDescriptor{
-		{ID: byte(0x02), Priority: 10},
-		{ID: byte(0x03), Priority: 10},
+		{ID: byte(0x02), Priority: 10, MessageType: &p2pproto.Message{}},
+		{ID: byte(0x03), Priority: 10, MessageType: &p2pproto.Message{}},
 	}, true))

 	return sw
@@ -135,31 +137,47 @@ func TestSwitches(t *testing.T) {
 	}

 	// Lets send some messages
-	ch0Msg := []byte("channel zero")
-	ch1Msg := []byte("channel foo")
-	ch2Msg := []byte("channel bar")
-
-	s1.Broadcast(byte(0x00), ch0Msg)
-	s1.Broadcast(byte(0x01), ch1Msg)
-	s1.Broadcast(byte(0x02), ch2Msg)
-
+	ch0Msg := &p2pproto.PexAddrs{
+		Addrs: []p2pproto.NetAddress{
+			{
+				ID: "1",
+			},
+		},
+	}
+	ch1Msg := &p2pproto.PexAddrs{
+		Addrs: []p2pproto.NetAddress{
+			{
+				ID: "1",
+			},
+		},
+	}
+	ch2Msg := &p2pproto.PexAddrs{
+		Addrs: []p2pproto.NetAddress{
+			{
+				ID: "2",
+			},
+		},
+	}
+	s1.Broadcast(Envelope{ChannelID: byte(0x00), Message: ch0Msg})
+	s1.Broadcast(Envelope{ChannelID: byte(0x01), Message: ch1Msg})
+	s1.Broadcast(Envelope{ChannelID: byte(0x02), Message: ch2Msg})
 	assertMsgReceivedWithTimeout(t,
 		ch0Msg,
 		byte(0x00),
-		s2.Reactor("foo").(*TestReactor), 10*time.Millisecond, 5*time.Second)
+		s2.Reactor("foo").(*TestReactor), 200*time.Millisecond, 5*time.Second)
 	assertMsgReceivedWithTimeout(t,
 		ch1Msg,
 		byte(0x01),
-		s2.Reactor("foo").(*TestReactor), 10*time.Millisecond, 5*time.Second)
+		s2.Reactor("foo").(*TestReactor), 200*time.Millisecond, 5*time.Second)
 	assertMsgReceivedWithTimeout(t,
 		ch2Msg,
 		byte(0x02),
-		s2.Reactor("bar").(*TestReactor), 10*time.Millisecond, 5*time.Second)
+		s2.Reactor("bar").(*TestReactor), 200*time.Millisecond, 5*time.Second)
 }

 func assertMsgReceivedWithTimeout(
 	t *testing.T,
-	msgBytes []byte,
+	msg proto.Message,
 	channel byte,
 	reactor *TestReactor,
 	checkPeriod,
@@ -170,9 +188,13 @@ func assertMsgReceivedWithTimeout(
 		select {
 		case <-ticker.C:
 			msgs := reactor.getMsgs(channel)
+			expectedBytes, err := proto.Marshal(msgs[0].Contents)
+			require.NoError(t, err)
+			gotBytes, err := proto.Marshal(msg)
+			require.NoError(t, err)
 			if len(msgs) > 0 {
-				if !bytes.Equal(msgs[0].Bytes, msgBytes) {
-					t.Fatalf("Unexpected message bytes. Wanted: %X, Got: %X", msgBytes, msgs[0].Bytes)
+				if !bytes.Equal(expectedBytes, gotBytes) {
+					t.Fatalf("Unexpected message bytes. Wanted: %X, Got: %X", msg, msgs[0].Counter)
 				}
 				return
 			}
@@ -429,7 +451,10 @@ func TestSwitchStopPeerForError(t *testing.T) {

 	// send messages to the peer from sw1
 	p := sw1.Peers().List()[0]
-	p.Send(0x1, []byte("here's a message to send"))
+	p.Send(Envelope{
+		ChannelID: 0x1,
+		Message:   &p2pproto.Message{},
+	})

 	// stop sw2. this should cause the p to fail,
 	// which results in calling StopPeerForError internally
@@ -671,9 +696,16 @@ func TestSwitchAcceptRoutine(t *testing.T) {
 }

 type errorTransport struct {
+	service.BaseService
 	acceptErr error
 }

+func newErrTransport(acceptErr error) *errorTransport {
+	t := &errorTransport{acceptErr: acceptErr}
+	t.BaseService = *service.NewBaseService(nil, "Error Transport", t)
+	return t
+}
+
 func (et errorTransport) NetAddress() NetAddress {
 	panic("not implemented")
 }
@@ -689,7 +721,9 @@ func (errorTransport) Cleanup(Peer) {
 }

 func TestSwitchAcceptRoutineErrorCases(t *testing.T) {
-	sw := NewSwitch(cfg, errorTransport{ErrFilterTimeout{}})
+	sw := NewSwitch(cfg)
+	sw.SetTransport(newErrTransport(ErrFilterTimeout{}))
+
 	assert.NotPanics(t, func() {
 		err := sw.Start()
 		require.NoError(t, err)
@@ -697,7 +731,8 @@ func TestSwitchAcceptRoutineErrorCases(t *testing.T) {
 		require.NoError(t, err)
 	})

-	sw = NewSwitch(cfg, errorTransport{ErrRejected{conn: nil, err: errors.New("filtered"), isFiltered: true}})
+	sw = NewSwitch(cfg)
+	sw.SetTransport(newErrTransport(ErrRejected{conn: nil, err: errors.New("filtered"), isFiltered: true}))
 	assert.NotPanics(t, func() {
 		err := sw.Start()
 		require.NoError(t, err)
@@ -706,7 +741,8 @@ func TestSwitchAcceptRoutineErrorCases(t *testing.T) {
 	})
 	// TODO(melekes) check we remove our address from addrBook

-	sw = NewSwitch(cfg, errorTransport{ErrTransportClosed{}})
+	sw = NewSwitch(cfg)
+	sw.SetTransport(newErrTransport(ErrTransportClosed{}))
 	assert.NotPanics(t, func() {
 		err := sw.Start()
 		require.NoError(t, err)
@@ -824,7 +860,7 @@ func BenchmarkSwitchBroadcast(b *testing.B) {
 	// Send random message from foo channel to another
 	for i := 0; i < b.N; i++ {
 		chID := byte(i % 4)
-		successChan := s1.Broadcast(chID, []byte("test data"))
+		successChan := s1.Broadcast(Envelope{ChannelID: chID})
 		for s := range successChan {
 			if s {
 				numSuccess++
--- a/p2p/test_util.go
+++ b/p2p/test_util.go
@@ -149,8 +149,10 @@ func (sw *Switch) addPeerWithConnection(conn net.Conn) error {
 		MConnConfig(sw.config),
 		ni,
 		sw.reactorsByCh,
+		sw.msgTypeByChID,
 		sw.chDescs,
 		sw.StopPeerForError,
+		sw.mlc,
 	)

 	if err = sw.addPeer(p); err != nil {
@@ -192,14 +194,11 @@ func MakeSwitch(
 		panic(err)
 	}

-	t := NewMultiplexTransport(nodeInfo, nodeKey, MConnConfig(cfg))
-
-	if err := t.Listen(*addr); err != nil {
-		panic(err)
-	}
+	t := NewMultiplexTransport(nodeInfo, nodeKey, *addr, MConnConfig(cfg))

 	// TODO: let the config be passed in?
-	sw := initSwitch(i, NewSwitch(cfg, t, opts...))
+	sw := initSwitch(i, NewSwitch(cfg, opts...))
+	sw.SetTransport(t)
 	sw.SetLogger(log.TestingLogger().With("switch", i))
 	sw.SetNodeKey(&nodeKey)

--- a/p2p/transport.go
+++ b/p2p/transport.go
@@ -8,8 +8,10 @@ import (

 	"golang.org/x/net/netutil"

+	"github.com/cosmos/gogoproto/proto"
 	"github.com/tendermint/tendermint/crypto"
 	"github.com/tendermint/tendermint/libs/protoio"
+	"github.com/tendermint/tendermint/libs/service"
 	"github.com/tendermint/tendermint/p2p/conn"
 	tmp2p "github.com/tendermint/tendermint/proto/tendermint/p2p"
 )
@@ -47,15 +49,19 @@ type peerConfig struct {
 	// isPersistent allows you to set a function, which, given socket address
 	// (for outbound peers) OR self-reported address (for inbound peers), tells
 	// if the peer is persistent or not.
-	isPersistent func(*NetAddress) bool
-	reactorsByCh map[byte]Reactor
-	metrics      *Metrics
+	isPersistent  func(*NetAddress) bool
+	reactorsByCh  map[byte]Reactor
+	msgTypeByChID map[byte]proto.Message
+	metrics       *Metrics
+	mlc           *metricsLabelCache
 }

 // Transport emits and connects to Peers. The implementation of Peer is left to
 // the transport. Each transport is also responsible to filter establishing
 // peers specific to its domain.
 type Transport interface {
+	service.Service
+
 	// Listening address.
 	NetAddress() NetAddress

@@ -69,13 +75,6 @@ type Transport interface {
 	Cleanup(Peer)
 }

-// transportLifecycle bundles the methods for callers to control start and stop
-// behavior.
-type transportLifecycle interface {
-	Close() error
-	Listen(NetAddress) error
-}
-
 // ConnFilterFunc to be implemented by filter hooks after a new connection has
 // been established. The set of exisiting connections is passed along together
 // with all resolved IPs for the new connection.
@@ -133,6 +132,8 @@ func MultiplexTransportMaxIncomingConnections(n int) MultiplexTransportOption {
 // MultiplexTransport accepts and dials tcp connections and upgrades them to
 // multiplexed peers.
 type MultiplexTransport struct {
+	service.BaseService
+
 	netAddr                NetAddress
 	listener               net.Listener
 	maxIncomingConnections int // see MaxIncomingConnections
@@ -159,15 +160,15 @@ type MultiplexTransport struct {

 // Test multiplexTransport for interface completeness.
 var _ Transport = (*MultiplexTransport)(nil)
-var _ transportLifecycle = (*MultiplexTransport)(nil)

 // NewMultiplexTransport returns a tcp connected multiplexed peer.
 func NewMultiplexTransport(
 	nodeInfo NodeInfo,
 	nodeKey NodeKey,
+	netAddr NetAddress,
 	mConfig conn.MConnConfig,
 ) *MultiplexTransport {
-	return &MultiplexTransport{
+	t := &MultiplexTransport{
 		acceptc:          make(chan accept),
 		closec:           make(chan struct{}),
 		dialTimeout:      defaultDialTimeout,
@@ -176,9 +177,12 @@ func NewMultiplexTransport(
 		mConfig:          mConfig,
 		nodeInfo:         nodeInfo,
 		nodeKey:          nodeKey,
+		netAddr:          netAddr,
 		conns:            NewConnSet(),
 		resolver:         net.DefaultResolver,
 	}
+	t.BaseService = *service.NewBaseService(nil, "P2P Transport", t)
+	return t
 }

 // NetAddress implements Transport.
@@ -231,20 +235,20 @@ func (mt *MultiplexTransport) Dial(
 	return p, nil
 }

-// Close implements transportLifecycle.
-func (mt *MultiplexTransport) Close() error {
+// OnStop implements Service.
+func (mt *MultiplexTransport) OnStop() {
 	close(mt.closec)

 	if mt.listener != nil {
-		return mt.listener.Close()
+		if err := mt.listener.Close(); err != nil {
+			mt.Logger.Error("closing listener", "err", err)
+		}
 	}
-
-	return nil
 }

-// Listen implements transportLifecycle.
-func (mt *MultiplexTransport) Listen(addr NetAddress) error {
-	ln, err := net.Listen("tcp", addr.DialString())
+// OnStart implements Service.
+func (mt *MultiplexTransport) OnStart() error {
+	ln, err := net.Listen("tcp", mt.netAddr.DialString())
 	if err != nil {
 		return err
 	}
@@ -253,7 +257,6 @@ func (mt *MultiplexTransport) Listen(addr NetAddress) error {
 		ln = netutil.LimitListener(ln, mt.maxIncomingConnections)
 	}

-	mt.netAddr = addr
 	mt.listener = ln

 	go mt.acceptPeers()
@@ -519,8 +522,10 @@ func (mt *MultiplexTransport) wrapPeer(
 		mt.mConfig,
 		ni,
 		cfg.reactorsByCh,
+		cfg.msgTypeByChID,
 		cfg.chDescs,
 		cfg.onPeerError,
+		cfg.mlc,
 		PeerMetrics(cfg.metrics),
 	)

--- a/p2p/transport_test.go
+++ b/p2p/transport_test.go
@@ -10,6 +10,7 @@ import (
 	"testing"
 	"time"

+	"github.com/stretchr/testify/require"
 	"github.com/tendermint/tendermint/crypto/ed25519"
 	"github.com/tendermint/tendermint/libs/protoio"
 	"github.com/tendermint/tendermint/p2p/conn"
@@ -28,20 +29,26 @@ func emptyNodeInfo() NodeInfo {
 func newMultiplexTransport(
 	nodeInfo NodeInfo,
 	nodeKey NodeKey,
+	netAddr NetAddress,
 ) *MultiplexTransport {
 	return NewMultiplexTransport(
-		nodeInfo, nodeKey, conn.DefaultMConnConfig(),
+		nodeInfo, nodeKey, netAddr, conn.DefaultMConnConfig(),
 	)
 }

 func TestTransportMultiplexConnFilter(t *testing.T) {
+	nodeKey := NodeKey{
+		PrivKey: ed25519.GenPrivKey(),
+	}
+	id := nodeKey.ID()
+	addr, err := NewNetAddressString(IDAddressString(id, "127.0.0.1:0"))
+	require.NoError(t, err)
+
 	mt := newMultiplexTransport(
 		emptyNodeInfo(),
-		NodeKey{
-			PrivKey: ed25519.GenPrivKey(),
-		},
+		nodeKey,
+		*addr,
 	)
-	id := mt.nodeKey.ID()

 	MultiplexTransportConnFilters(
 		func(_ ConnSet, _ net.Conn, _ []net.IP) error { return nil },
@@ -51,14 +58,8 @@ func TestTransportMultiplexConnFilter(t *testing.T) {
 		},
 	)(mt)

-	addr, err := NewNetAddressString(IDAddressString(id, "127.0.0.1:0"))
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	if err := mt.Listen(*addr); err != nil {
-		t.Fatal(err)
-	}
+	err = mt.Start()
+	require.NoError(t, err)

 	errc := make(chan error)

@@ -89,13 +90,18 @@ func TestTransportMultiplexConnFilter(t *testing.T) {
 }

 func TestTransportMultiplexConnFilterTimeout(t *testing.T) {
+	nodeKey := NodeKey{
+		PrivKey: ed25519.GenPrivKey(),
+	}
+	id := nodeKey.ID()
+	addr, err := NewNetAddressString(IDAddressString(id, "127.0.0.1:0"))
+	require.NoError(t, err)
+
 	mt := newMultiplexTransport(
 		emptyNodeInfo(),
-		NodeKey{
-			PrivKey: ed25519.GenPrivKey(),
-		},
+		nodeKey,
+		*addr,
 	)
-	id := mt.nodeKey.ID()

 	MultiplexTransportFilterTimeout(5 * time.Millisecond)(mt)
 	MultiplexTransportConnFilters(
@@ -105,14 +111,9 @@ func TestTransportMultiplexConnFilterTimeout(t *testing.T) {
 		},
 	)(mt)

-	addr, err := NewNetAddressString(IDAddressString(id, "127.0.0.1:0"))
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	if err := mt.Listen(*addr); err != nil {
-		t.Fatal(err)
-	}
+	err = mt.Start()
+	require.NoError(t, err)
+	defer mt.Stop() //nolint:errcheck

 	errc := make(chan error)
 	go func() {
@@ -140,6 +141,10 @@ func TestTransportMultiplexConnFilterTimeout(t *testing.T) {
 func TestTransportMultiplexMaxIncomingConnections(t *testing.T) {
 	pv := ed25519.GenPrivKey()
 	id := PubKeyToID(pv.PubKey())
+	addr, err := NewNetAddressString(IDAddressString(id, "127.0.0.1:0"))
+	if err != nil {
+		t.Fatal(err)
+	}
 	mt := newMultiplexTransport(
 		testNodeInfo(
 			id, "transport",
@@ -147,26 +152,22 @@ func TestTransportMultiplexMaxIncomingConnections(t *testing.T) {
 		NodeKey{
 			PrivKey: pv,
 		},
+		*addr,
 	)

 	MultiplexTransportMaxIncomingConnections(0)(mt)

-	addr, err := NewNetAddressString(IDAddressString(id, "127.0.0.1:0"))
-	if err != nil {
-		t.Fatal(err)
-	}
 	const maxIncomingConns = 2
 	MultiplexTransportMaxIncomingConnections(maxIncomingConns)(mt)
-	if err := mt.Listen(*addr); err != nil {
-		t.Fatal(err)
-	}
+	err = mt.Start()
+	require.NoError(t, err)

 	laddr := NewNetAddress(mt.nodeKey.ID(), mt.listener.Addr())

 	// Connect more peers than max
 	for i := 0; i <= maxIncomingConns; i++ {
 		errc := make(chan error)
-		go testDialer(*laddr, errc)
+		go testDialer(t, *laddr, errc)

 		err = <-errc
 		if i < maxIncomingConns {
@@ -198,7 +199,7 @@ func TestTransportMultiplexAcceptMultiple(t *testing.T) {

 	// Setup dialers.
 	for i := 0; i < nDialers; i++ {
-		go testDialer(*laddr, errc)
+		go testDialer(t, *laddr, errc)
 	}

 	// Catch connection errors.
@@ -235,23 +236,26 @@ func TestTransportMultiplexAcceptMultiple(t *testing.T) {
 		}
 	}

-	if err := mt.Close(); err != nil {
+	if err := mt.Stop(); err != nil {
 		t.Errorf("close errored: %v", err)
 	}
 }

-func testDialer(dialAddr NetAddress, errc chan error) {
-	var (
-		pv     = ed25519.GenPrivKey()
-		dialer = newMultiplexTransport(
-			testNodeInfo(PubKeyToID(pv.PubKey()), defaultNodeName),
-			NodeKey{
-				PrivKey: pv,
-			},
-		)
+func testDialer(t *testing.T, dialAddr NetAddress, errc chan error) {
+	pv := ed25519.GenPrivKey()
+	id := PubKeyToID(pv.PubKey())
+	addr, err := NewNetAddressString(IDAddressString(id, "127.0.0.1:0"))
+	require.NoError(t, err)
+
+	dialer := newMultiplexTransport(
+		testNodeInfo(PubKeyToID(pv.PubKey()), defaultNodeName),
+		NodeKey{
+			PrivKey: pv,
+		},
+		*addr,
 	)

-	_, err := dialer.Dial(dialAddr, peerConfig{})
+	_, err = dialer.Dial(dialAddr, peerConfig{})
 	if err != nil {
 		errc <- err
 		return
@@ -319,15 +323,14 @@ func TestTransportMultiplexAcceptNonBlocking(t *testing.T) {
 	go func() {
 		<-slowc

-		var (
-			dialer = newMultiplexTransport(
-				fastNodeInfo,
-				NodeKey{
-					PrivKey: fastNodePV,
-				},
-			)
-		)
 		addr := NewNetAddress(mt.nodeKey.ID(), mt.listener.Addr())
+		dialer := newMultiplexTransport(
+			fastNodeInfo,
+			NodeKey{
+				PrivKey: fastNodePV,
+			},
+			*addr,
+		)

 		_, err := dialer.Dial(*addr, peerConfig{})
 		if err != nil {
@@ -360,17 +363,16 @@ func TestTransportMultiplexValidateNodeInfo(t *testing.T) {
 	errc := make(chan error)

 	go func() {
-		var (
-			pv     = ed25519.GenPrivKey()
-			dialer = newMultiplexTransport(
-				testNodeInfo(PubKeyToID(pv.PubKey()), ""), // Should not be empty
-				NodeKey{
-					PrivKey: pv,
-				},
-			)
-		)

+		pv := ed25519.GenPrivKey()
 		addr := NewNetAddress(mt.nodeKey.ID(), mt.listener.Addr())
+		dialer := newMultiplexTransport(
+			testNodeInfo(PubKeyToID(pv.PubKey()), ""), // Should not be empty
+			NodeKey{
+				PrivKey: pv,
+			},
+			*addr,
+		)

 		_, err := dialer.Dial(*addr, peerConfig{})
 		if err != nil {
@@ -401,6 +403,7 @@ func TestTransportMultiplexRejectMissmatchID(t *testing.T) {
 	errc := make(chan error)

 	go func() {
+		addr := NewNetAddress(mt.nodeKey.ID(), mt.listener.Addr())
 		dialer := newMultiplexTransport(
 			testNodeInfo(
 				PubKeyToID(ed25519.GenPrivKey().PubKey()), "dialer",
@@ -408,8 +411,8 @@ func TestTransportMultiplexRejectMissmatchID(t *testing.T) {
 			NodeKey{
 				PrivKey: ed25519.GenPrivKey(),
 			},
+			*addr,
 		)
-		addr := NewNetAddress(mt.nodeKey.ID(), mt.listener.Addr())

 		_, err := dialer.Dial(*addr, peerConfig{})
 		if err != nil {
@@ -437,18 +440,16 @@ func TestTransportMultiplexRejectMissmatchID(t *testing.T) {
 func TestTransportMultiplexDialRejectWrongID(t *testing.T) {
 	mt := testSetupMultiplexTransport(t)

-	var (
-		pv     = ed25519.GenPrivKey()
-		dialer = newMultiplexTransport(
-			testNodeInfo(PubKeyToID(pv.PubKey()), ""), // Should not be empty
-			NodeKey{
-				PrivKey: pv,
-			},
-		)
-	)
-
+	pv := ed25519.GenPrivKey()
 	wrongID := PubKeyToID(ed25519.GenPrivKey().PubKey())
 	addr := NewNetAddress(wrongID, mt.listener.Addr())
+	dialer := newMultiplexTransport(
+		testNodeInfo(PubKeyToID(pv.PubKey()), ""), // Should not be empty
+		NodeKey{
+			PrivKey: pv,
+		},
+		*addr,
+	)

 	_, err := dialer.Dial(*addr, peerConfig{})
 	if err != nil {
@@ -471,14 +472,15 @@ func TestTransportMultiplexRejectIncompatible(t *testing.T) {
 	go func() {
 		var (
 			pv     = ed25519.GenPrivKey()
+			addr   = NewNetAddress(mt.nodeKey.ID(), mt.listener.Addr())
 			dialer = newMultiplexTransport(
 				testNodeInfoWithNetwork(PubKeyToID(pv.PubKey()), "dialer", "incompatible-network"),
 				NodeKey{
 					PrivKey: pv,
 				},
+				*addr,
 			)
 		)
-		addr := NewNetAddress(mt.nodeKey.ID(), mt.listener.Addr())

 		_, err := dialer.Dial(*addr, peerConfig{})
 		if err != nil {
@@ -622,11 +624,16 @@ func TestTransportHandshake(t *testing.T) {
 }

 func TestTransportAddChannel(t *testing.T) {
+	pv := ed25519.GenPrivKey()
+	id := PubKeyToID(pv.PubKey())
+	addr, err := NewNetAddressString(IDAddressString(id, "127.0.0.1:0"))
+	require.NoError(t, err)
 	mt := newMultiplexTransport(
 		emptyNodeInfo(),
 		NodeKey{
-			PrivKey: ed25519.GenPrivKey(),
+			PrivKey: pv,
 		},
+		*addr,
 	)
 	testChannel := byte(0x01)

@@ -638,27 +645,27 @@ func TestTransportAddChannel(t *testing.T) {

 // create listener
 func testSetupMultiplexTransport(t *testing.T) *MultiplexTransport {
-	var (
-		pv = ed25519.GenPrivKey()
-		id = PubKeyToID(pv.PubKey())
-		mt = newMultiplexTransport(
-			testNodeInfo(
-				id, "transport",
-			),
-			NodeKey{
-				PrivKey: pv,
-			},
-		)
-	)
-
+	pv := ed25519.GenPrivKey()
+	id := PubKeyToID(pv.PubKey())
 	addr, err := NewNetAddressString(IDAddressString(id, "127.0.0.1:0"))
 	if err != nil {
 		t.Fatal(err)
 	}
+	mt := newMultiplexTransport(
+		testNodeInfo(
+			id, "transport",
+		),
+		NodeKey{
+			PrivKey: pv,
+		},
+		*addr,
+	)

-	if err := mt.Listen(*addr); err != nil {
-		t.Fatal(err)
-	}
+	err = mt.Start()
+	require.NoError(t, err)
+	t.Cleanup(func() {
+		mt.Stop() //nolint:errcheck
+	})

 	// give the listener some time to get ready
 	time.Sleep(20 * time.Millisecond)
--- a/p2p/trust/config.go
+++ b/p2p/trust/config.go
@@ -1,55 +0,0 @@
-package trust
-
-import "time"
-
-// MetricConfig - Configures the weight functions and time intervals for the metric
-type MetricConfig struct {
-	// Determines the percentage given to current behavior
-	ProportionalWeight float64
-
-	// Determines the percentage given to prior behavior
-	IntegralWeight float64
-
-	// The window of time that the trust metric will track events across.
-	// This can be set to cover many days without issue
-	TrackingWindow time.Duration
-
-	// Each interval should be short for adapability.
-	// Less than 30 seconds is too sensitive,
-	// and greater than 5 minutes will make the metric numb
-	IntervalLength time.Duration
-}
-
-// DefaultConfig returns a config with values that have been tested and produce desirable results
-func DefaultConfig() MetricConfig {
-	return MetricConfig{
-		ProportionalWeight: 0.4,
-		IntegralWeight:     0.6,
-		TrackingWindow:     (time.Minute * 60 * 24) * 14, // 14 days.
-		IntervalLength:     1 * time.Minute,
-	}
-}
-
-// Ensures that all configuration elements have valid values
-func customConfig(tmc MetricConfig) MetricConfig {
-	config := DefaultConfig()
-
-	// Check the config for set values, and setup appropriately
-	if tmc.ProportionalWeight > 0 {
-		config.ProportionalWeight = tmc.ProportionalWeight
-	}
-
-	if tmc.IntegralWeight > 0 {
-		config.IntegralWeight = tmc.IntegralWeight
-	}
-
-	if tmc.IntervalLength > time.Duration(0) {
-		config.IntervalLength = tmc.IntervalLength
-	}
-
-	if tmc.TrackingWindow > time.Duration(0) &&
-		tmc.TrackingWindow >= config.IntervalLength {
-		config.TrackingWindow = tmc.TrackingWindow
-	}
-	return config
-}
--- a/p2p/trust/metric.go
+++ b/p2p/trust/metric.go
@@ -1,412 +0,0 @@
-// Copyright 2017 Tendermint. All rights reserved.
-// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
-
-package trust
-
-import (
-	"math"
-	"time"
-
-	"github.com/tendermint/tendermint/libs/service"
-	tmsync "github.com/tendermint/tendermint/libs/sync"
-)
-
-//---------------------------------------------------------------------------------------
-
-const (
-	// The weight applied to the derivative when current behavior is >= previous behavior
-	defaultDerivativeGamma1 = 0
-
-	// The weight applied to the derivative when current behavior is less than previous behavior
-	defaultDerivativeGamma2 = 1.0
-
-	// The weight applied to history data values when calculating the history value
-	defaultHistoryDataWeight = 0.8
-)
-
-// MetricHistoryJSON - history data necessary to save the trust metric
-type MetricHistoryJSON struct {
-	NumIntervals int       `json:"intervals"`
-	History      []float64 `json:"history"`
-}
-
-// Metric - keeps track of peer reliability
-// See tendermint/docs/architecture/adr-006-trust-metric.md for details
-type Metric struct {
-	service.BaseService
-
-	// Mutex that protects the metric from concurrent access
-	mtx tmsync.Mutex
-
-	// Determines the percentage given to current behavior
-	proportionalWeight float64
-
-	// Determines the percentage given to prior behavior
-	integralWeight float64
-
-	// Count of how many time intervals this metric has been tracking
-	numIntervals int
-
-	// Size of the time interval window for this trust metric
-	maxIntervals int
-
-	// The time duration for a single time interval
-	intervalLen time.Duration
-
-	// Stores the trust history data for this metric
-	history []float64
-
-	// Weights applied to the history data when calculating the history value
-	historyWeights []float64
-
-	// The sum of the history weights used when calculating the history value
-	historyWeightSum float64
-
-	// The current number of history data elements
-	historySize int
-
-	// The maximum number of history data elements
-	historyMaxSize int
-
-	// The calculated history value for the current time interval
-	historyValue float64
-
-	// The number of recorded good and bad events for the current time interval
-	bad, good float64
-
-	// While true, history data is not modified
-	paused bool
-
-	// Used during testing in order to control the passing of time intervals
-	testTicker MetricTicker
-}
-
-// NewMetric returns a trust metric with the default configuration.
-// Use Start to begin tracking the quality of peer behavior over time
-func NewMetric() *Metric {
-	return NewMetricWithConfig(DefaultConfig())
-}
-
-// NewMetricWithConfig returns a trust metric with a custom configuration.
-// Use Start to begin tracking the quality of peer behavior over time
-func NewMetricWithConfig(tmc MetricConfig) *Metric {
-	tm := new(Metric)
-	config := customConfig(tmc)
-
-	// Setup using the configuration values
-	tm.proportionalWeight = config.ProportionalWeight
-	tm.integralWeight = config.IntegralWeight
-	tm.intervalLen = config.IntervalLength
-	// The maximum number of time intervals is the tracking window / interval length
-	tm.maxIntervals = int(config.TrackingWindow / tm.intervalLen)
-	// The history size will be determined by the maximum number of time intervals
-	tm.historyMaxSize = intervalToHistoryOffset(tm.maxIntervals) + 1
-	// This metric has a perfect history so far
-	tm.historyValue = 1.0
-
-	tm.BaseService = *service.NewBaseService(nil, "Metric", tm)
-	return tm
-}
-
-// OnStart implements Service
-func (tm *Metric) OnStart() error {
-	if err := tm.BaseService.OnStart(); err != nil {
-		return err
-	}
-	go tm.processRequests()
-	return nil
-}
-
-// OnStop implements Service
-// Nothing to do since the goroutine shuts down by itself via BaseService.Quit()
-func (tm *Metric) OnStop() {}
-
-// Returns a snapshot of the trust metric history data
-func (tm *Metric) HistoryJSON() MetricHistoryJSON {
-	tm.mtx.Lock()
-	defer tm.mtx.Unlock()
-
-	return MetricHistoryJSON{
-		NumIntervals: tm.numIntervals,
-		History:      tm.history,
-	}
-}
-
-// Instantiates a trust metric by loading the history data for a single peer.
-// This is called only once and only right after creation, which is why the
-// lock is not held while accessing the trust metric struct members
-func (tm *Metric) Init(hist MetricHistoryJSON) {
-	// Restore the number of time intervals we have previously tracked
-	if hist.NumIntervals > tm.maxIntervals {
-		hist.NumIntervals = tm.maxIntervals
-	}
-	tm.numIntervals = hist.NumIntervals
-	// Restore the history and its current size
-	if len(hist.History) > tm.historyMaxSize {
-		// Keep the history no larger than historyMaxSize
-		last := len(hist.History) - tm.historyMaxSize
-		hist.History = hist.History[last:]
-	}
-	tm.history = hist.History
-	tm.historySize = len(tm.history)
-	// Create the history weight values and weight sum
-	for i := 1; i <= tm.numIntervals; i++ {
-		x := math.Pow(defaultHistoryDataWeight, float64(i)) // Optimistic weight
-		tm.historyWeights = append(tm.historyWeights, x)
-	}
-
-	for _, v := range tm.historyWeights {
-		tm.historyWeightSum += v
-	}
-	// Calculate the history value based on the loaded history data
-	tm.historyValue = tm.calcHistoryValue()
-}
-
-// Pause tells the metric to pause recording data over time intervals.
-// All method calls that indicate events will unpause the metric
-func (tm *Metric) Pause() {
-	tm.mtx.Lock()
-	defer tm.mtx.Unlock()
-
-	// Pause the metric for now
-	tm.paused = true
-}
-
-// BadEvents indicates that an undesirable event(s) took place
-func (tm *Metric) BadEvents(num int) {
-	tm.mtx.Lock()
-	defer tm.mtx.Unlock()
-
-	tm.unpause()
-	tm.bad += float64(num)
-}
-
-// GoodEvents indicates that a desirable event(s) took place
-func (tm *Metric) GoodEvents(num int) {
-	tm.mtx.Lock()
-	defer tm.mtx.Unlock()
-
-	tm.unpause()
-	tm.good += float64(num)
-}
-
-// TrustValue gets the dependable trust value; always between 0 and 1
-func (tm *Metric) TrustValue() float64 {
-	tm.mtx.Lock()
-	defer tm.mtx.Unlock()
-
-	return tm.calcTrustValue()
-}
-
-// TrustScore gets a score based on the trust value always between 0 and 100
-func (tm *Metric) TrustScore() int {
-	score := tm.TrustValue() * 100
-
-	return int(math.Floor(score))
-}
-
-// NextTimeInterval saves current time interval data and prepares for the following interval
-func (tm *Metric) NextTimeInterval() {
-	tm.mtx.Lock()
-	defer tm.mtx.Unlock()
-
-	if tm.paused {
-		// Do not prepare for the next time interval while paused
-		return
-	}
-
-	// Add the current trust value to the history data
-	newHist := tm.calcTrustValue()
-	tm.history = append(tm.history, newHist)
-
-	// Update history and interval counters
-	if tm.historySize < tm.historyMaxSize {
-		tm.historySize++
-	} else {
-		// Keep the history no larger than historyMaxSize
-		last := len(tm.history) - tm.historyMaxSize
-		tm.history = tm.history[last:]
-	}
-
-	if tm.numIntervals < tm.maxIntervals {
-		tm.numIntervals++
-		// Add the optimistic weight for the new time interval
-		wk := math.Pow(defaultHistoryDataWeight, float64(tm.numIntervals))
-		tm.historyWeights = append(tm.historyWeights, wk)
-		tm.historyWeightSum += wk
-	}
-
-	// Update the history data using Faded Memories
-	tm.updateFadedMemory()
-	// Calculate the history value for the upcoming time interval
-	tm.historyValue = tm.calcHistoryValue()
-	tm.good = 0
-	tm.bad = 0
-}
-
-// SetTicker allows a TestTicker to be provided that will manually control
-// the passing of time from the perspective of the Metric.
-// The ticker must be set before Start is called on the metric
-func (tm *Metric) SetTicker(ticker MetricTicker) {
-	tm.mtx.Lock()
-	defer tm.mtx.Unlock()
-
-	tm.testTicker = ticker
-}
-
-// Copy returns a new trust metric with members containing the same values
-func (tm *Metric) Copy() *Metric {
-	if tm == nil {
-		return nil
-	}
-
-	tm.mtx.Lock()
-	defer tm.mtx.Unlock()
-
-	return &Metric{
-		proportionalWeight: tm.proportionalWeight,
-		integralWeight:     tm.integralWeight,
-		numIntervals:       tm.numIntervals,
-		maxIntervals:       tm.maxIntervals,
-		intervalLen:        tm.intervalLen,
-		history:            tm.history,
-		historyWeights:     tm.historyWeights,
-		historyWeightSum:   tm.historyWeightSum,
-		historySize:        tm.historySize,
-		historyMaxSize:     tm.historyMaxSize,
-		historyValue:       tm.historyValue,
-		good:               tm.good,
-		bad:                tm.bad,
-		paused:             tm.paused,
-	}
-
-}
-
-/* Private methods */
-
-// This method is for a goroutine that handles all requests on the metric
-func (tm *Metric) processRequests() {
-	t := tm.testTicker
-	if t == nil {
-		// No test ticker was provided, so we create a normal ticker
-		t = NewTicker(tm.intervalLen)
-	}
-	defer t.Stop()
-	// Obtain the raw channel
-	tick := t.GetChannel()
-loop:
-	for {
-		select {
-		case <-tick:
-			tm.NextTimeInterval()
-		case <-tm.Quit():
-			// Stop all further tracking for this metric
-			break loop
-		}
-	}
-}
-
-// Wakes the trust metric up if it is currently paused
-// This method needs to be called with the mutex locked
-func (tm *Metric) unpause() {
-	// Check if this is the first experience with
-	// what we are tracking since being paused
-	if tm.paused {
-		tm.good = 0
-		tm.bad = 0
-		// New events cause us to unpause the metric
-		tm.paused = false
-	}
-}
-
-// Calculates the trust value for the request processing
-func (tm *Metric) calcTrustValue() float64 {
-	weightedP := tm.proportionalWeight * tm.proportionalValue()
-	weightedI := tm.integralWeight * tm.historyValue
-	weightedD := tm.weightedDerivative()
-
-	tv := weightedP + weightedI + weightedD
-	// Do not return a negative value.
-	if tv < 0 {
-		tv = 0
-	}
-	return tv
-}
-
-// Calculates the current score for good/bad experiences
-func (tm *Metric) proportionalValue() float64 {
-	value := 1.0
-
-	total := tm.good + tm.bad
-	if total > 0 {
-		value = tm.good / total
-	}
-	return value
-}
-
-// Strengthens the derivative component when the change is negative
-func (tm *Metric) weightedDerivative() float64 {
-	var weight float64 = defaultDerivativeGamma1
-
-	d := tm.derivativeValue()
-	if d < 0 {
-		weight = defaultDerivativeGamma2
-	}
-	return weight * d
-}
-
-// Calculates the derivative component
-func (tm *Metric) derivativeValue() float64 {
-	return tm.proportionalValue() - tm.historyValue
-}
-
-// Calculates the integral (history) component of the trust value
-func (tm *Metric) calcHistoryValue() float64 {
-	var hv float64
-
-	for i := 0; i < tm.numIntervals; i++ {
-		hv += tm.fadedMemoryValue(i) * tm.historyWeights[i]
-	}
-
-	return hv / tm.historyWeightSum
-}
-
-// Retrieves the actual history data value that represents the requested time interval
-func (tm *Metric) fadedMemoryValue(interval int) float64 {
-	first := tm.historySize - 1
-
-	if interval == 0 {
-		// Base case
-		return tm.history[first]
-	}
-
-	offset := intervalToHistoryOffset(interval)
-	return tm.history[first-offset]
-}
-
-// Performs the update for our Faded Memories process, which allows the
-// trust metric tracking window to be large while maintaining a small
-// number of history data values
-func (tm *Metric) updateFadedMemory() {
-	if tm.historySize < 2 {
-		return
-	}
-
-	end := tm.historySize - 1
-	// Keep the most recent history element
-	for count := 1; count < tm.historySize; count++ {
-		i := end - count
-		// The older the data is, the more we spread it out
-		x := math.Pow(2, float64(count))
-		// Two history data values are merged into a single value
-		tm.history[i] = ((tm.history[i] * (x - 1)) + tm.history[i+1]) / x
-	}
-}
-
-// Map the interval value down to an offset from the beginning of history
-func intervalToHistoryOffset(interval int) int {
-	// The system maintains 2^m interval values in the form of m history
-	// data values. Therefore, we access the ith interval by obtaining
-	// the history data index = the floor of log2(i)
-	return int(math.Floor(math.Log2(float64(interval))))
-}
--- a/p2p/trust/metric_test.go
+++ b/p2p/trust/metric_test.go
@@ -1,119 +0,0 @@
-package trust
-
-import (
-	"testing"
-	"time"
-
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-)
-
-func TestTrustMetricScores(t *testing.T) {
-	tm := NewMetric()
-	err := tm.Start()
-	require.NoError(t, err)
-
-	// Perfect score
-	tm.GoodEvents(1)
-	score := tm.TrustScore()
-	assert.Equal(t, 100, score)
-
-	// Less than perfect score
-	tm.BadEvents(10)
-	score = tm.TrustScore()
-	assert.NotEqual(t, 100, score)
-	err = tm.Stop()
-	require.NoError(t, err)
-}
-
-func TestTrustMetricConfig(t *testing.T) {
-	// 7 days
-	window := time.Minute * 60 * 24 * 7
-	config := MetricConfig{
-		TrackingWindow: window,
-		IntervalLength: 2 * time.Minute,
-	}
-
-	tm := NewMetricWithConfig(config)
-	err := tm.Start()
-	require.NoError(t, err)
-
-	// The max time intervals should be the TrackingWindow / IntervalLen
-	assert.Equal(t, int(config.TrackingWindow/config.IntervalLength), tm.maxIntervals)
-
-	dc := DefaultConfig()
-	// These weights should still be the default values
-	assert.Equal(t, dc.ProportionalWeight, tm.proportionalWeight)
-	assert.Equal(t, dc.IntegralWeight, tm.integralWeight)
-	err = tm.Stop()
-	require.NoError(t, err)
-	tm.Wait()
-
-	config.ProportionalWeight = 0.3
-	config.IntegralWeight = 0.7
-	tm = NewMetricWithConfig(config)
-	err = tm.Start()
-	require.NoError(t, err)
-
-	// These weights should be equal to our custom values
-	assert.Equal(t, config.ProportionalWeight, tm.proportionalWeight)
-	assert.Equal(t, config.IntegralWeight, tm.integralWeight)
-	err = tm.Stop()
-	require.NoError(t, err)
-	tm.Wait()
-}
-
-func TestTrustMetricCopyNilPointer(t *testing.T) {
-	var tm *Metric
-
-	ctm := tm.Copy()
-
-	assert.Nil(t, ctm)
-}
-
-// XXX: This test fails non-deterministically
-//
-//nolint:unused,deadcode
-func _TestTrustMetricStopPause(t *testing.T) {
-	// The TestTicker will provide manual control over
-	// the passing of time within the metric
-	tt := NewTestTicker()
-	tm := NewMetric()
-	tm.SetTicker(tt)
-	err := tm.Start()
-	require.NoError(t, err)
-	// Allow some time intervals to pass and pause
-	tt.NextTick()
-	tt.NextTick()
-	tm.Pause()
-
-	// could be 1 or 2 because Pause and NextTick race
-	first := tm.Copy().numIntervals
-
-	// Allow more time to pass and check the intervals are unchanged
-	tt.NextTick()
-	tt.NextTick()
-	assert.Equal(t, first, tm.Copy().numIntervals)
-
-	// Get the trust metric activated again
-	tm.GoodEvents(5)
-	// Allow some time intervals to pass and stop
-	tt.NextTick()
-	tt.NextTick()
-	err = tm.Stop()
-	require.NoError(t, err)
-	tm.Wait()
-
-	second := tm.Copy().numIntervals
-	// Allow more intervals to pass while the metric is stopped
-	// and check that the number of intervals match
-	tm.NextTimeInterval()
-	tm.NextTimeInterval()
-	// XXX: fails non-deterministically:
-	// expected 5, got 6
-	assert.Equal(t, second+2, tm.Copy().numIntervals)
-
-	if first > second {
-		t.Fatalf("numIntervals should always increase or stay the same over time")
-	}
-}
--- a/p2p/trust/store.go
+++ b/p2p/trust/store.go
@@ -1,220 +0,0 @@
-// Copyright 2017 Tendermint. All rights reserved.
-// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
-
-package trust
-
-import (
-	"encoding/json"
-	"fmt"
-	"time"
-
-	dbm "github.com/tendermint/tm-db"
-
-	"github.com/tendermint/tendermint/libs/service"
-	tmsync "github.com/tendermint/tendermint/libs/sync"
-)
-
-const defaultStorePeriodicSaveInterval = 1 * time.Minute
-
-var trustMetricKey = []byte("trustMetricStore")
-
-// MetricStore - Manages all trust metrics for peers
-type MetricStore struct {
-	service.BaseService
-
-	// Maps a Peer.Key to that peer's TrustMetric
-	peerMetrics map[string]*Metric
-
-	// Mutex that protects the map and history data file
-	mtx tmsync.Mutex
-
-	// The db where peer trust metric history data will be stored
-	db dbm.DB
-
-	// This configuration will be used when creating new TrustMetrics
-	config MetricConfig
-}
-
-// NewTrustMetricStore returns a store that saves data to the DB
-// and uses the config when creating new trust metrics.
-// Use Start to to initialize the trust metric store
-func NewTrustMetricStore(db dbm.DB, tmc MetricConfig) *MetricStore {
-	tms := &MetricStore{
-		peerMetrics: make(map[string]*Metric),
-		db:          db,
-		config:      tmc,
-	}
-
-	tms.BaseService = *service.NewBaseService(nil, "MetricStore", tms)
-	return tms
-}
-
-// OnStart implements Service
-func (tms *MetricStore) OnStart() error {
-	if err := tms.BaseService.OnStart(); err != nil {
-		return err
-	}
-
-	tms.mtx.Lock()
-	defer tms.mtx.Unlock()
-
-	tms.loadFromDB()
-	go tms.saveRoutine()
-	return nil
-}
-
-// OnStop implements Service
-func (tms *MetricStore) OnStop() {
-	tms.BaseService.OnStop()
-
-	tms.mtx.Lock()
-	defer tms.mtx.Unlock()
-
-	// Stop all trust metric go-routines
-	for _, tm := range tms.peerMetrics {
-		if err := tm.Stop(); err != nil {
-			tms.Logger.Error("unable to stop metric store", "error", err)
-		}
-	}
-
-	// Make the final trust history data save
-	tms.saveToDB()
-}
-
-// Size returns the number of entries in the trust metric store
-func (tms *MetricStore) Size() int {
-	tms.mtx.Lock()
-	defer tms.mtx.Unlock()
-
-	return tms.size()
-}
-
-// AddPeerTrustMetric takes an existing trust metric and associates it with a peer key.
-// The caller is expected to call Start on the TrustMetric being added
-func (tms *MetricStore) AddPeerTrustMetric(key string, tm *Metric) {
-	tms.mtx.Lock()
-	defer tms.mtx.Unlock()
-
-	if key == "" || tm == nil {
-		return
-	}
-	tms.peerMetrics[key] = tm
-}
-
-// GetPeerTrustMetric returns a trust metric by peer key
-func (tms *MetricStore) GetPeerTrustMetric(key string) *Metric {
-	tms.mtx.Lock()
-	defer tms.mtx.Unlock()
-
-	tm, ok := tms.peerMetrics[key]
-	if !ok {
-		// If the metric is not available, we will create it
-		tm = NewMetricWithConfig(tms.config)
-		if err := tm.Start(); err != nil {
-			tms.Logger.Error("unable to start metric store", "error", err)
-		}
-		// The metric needs to be in the map
-		tms.peerMetrics[key] = tm
-	}
-	return tm
-}
-
-// PeerDisconnected pauses the trust metric associated with the peer identified by the key
-func (tms *MetricStore) PeerDisconnected(key string) {
-	tms.mtx.Lock()
-	defer tms.mtx.Unlock()
-
-	// If the Peer that disconnected has a metric, pause it
-	if tm, ok := tms.peerMetrics[key]; ok {
-		tm.Pause()
-	}
-}
-
-// Saves the history data for all peers to the store DB.
-// This public method acquires the trust metric store lock
-func (tms *MetricStore) SaveToDB() {
-	tms.mtx.Lock()
-	defer tms.mtx.Unlock()
-
-	tms.saveToDB()
-}
-
-/* Private methods */
-
-// size returns the number of entries in the store without acquiring the mutex
-func (tms *MetricStore) size() int {
-	return len(tms.peerMetrics)
-}
-
-/* Loading & Saving */
-/* Both loadFromDB and savetoDB assume the mutex has been acquired */
-
-// Loads the history data for all peers from the store DB
-// cmn.Panics if file is corrupt
-func (tms *MetricStore) loadFromDB() bool {
-	// Obtain the history data we have so far
-	bytes, err := tms.db.Get(trustMetricKey)
-	if err != nil {
-		panic(err)
-	}
-	if bytes == nil {
-		return false
-	}
-
-	peers := make(map[string]MetricHistoryJSON)
-	err = json.Unmarshal(bytes, &peers)
-	if err != nil {
-		panic(fmt.Sprintf("Could not unmarshal Trust Metric Store DB data: %v", err))
-	}
-
-	// If history data exists in the file,
-	// load it into trust metric
-	for key, p := range peers {
-		tm := NewMetricWithConfig(tms.config)
-
-		if err := tm.Start(); err != nil {
-			tms.Logger.Error("unable to start metric", "error", err)
-		}
-		tm.Init(p)
-		// Load the peer trust metric into the store
-		tms.peerMetrics[key] = tm
-	}
-	return true
-}
-
-// Saves the history data for all peers to the store DB
-func (tms *MetricStore) saveToDB() {
-	tms.Logger.Debug("Saving TrustHistory to DB", "size", tms.size())
-
-	peers := make(map[string]MetricHistoryJSON)
-
-	for key, tm := range tms.peerMetrics {
-		// Add an entry for the peer identified by key
-		peers[key] = tm.HistoryJSON()
-	}
-
-	// Write all the data back to the DB
-	bytes, err := json.Marshal(peers)
-	if err != nil {
-		tms.Logger.Error("Failed to encode the TrustHistory", "err", err)
-		return
-	}
-	if err := tms.db.SetSync(trustMetricKey, bytes); err != nil {
-		tms.Logger.Error("failed to flush data to disk", "error", err)
-	}
-}
-
-// Periodically saves the trust history data to the DB
-func (tms *MetricStore) saveRoutine() {
-	t := time.NewTicker(defaultStorePeriodicSaveInterval)
-	defer t.Stop()
-loop:
-	for {
-		select {
-		case <-t.C:
-			tms.SaveToDB()
-		case <-tms.Quit():
-			break loop
-		}
-	}
-}
--- a/p2p/trust/store_test.go
+++ b/p2p/trust/store_test.go
@@ -1,166 +0,0 @@
-// Copyright 2017 Tendermint. All rights reserved.
-// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
-
-package trust
-
-import (
-	"fmt"
-	"os"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-	dbm "github.com/tendermint/tm-db"
-
-	"github.com/tendermint/tendermint/libs/log"
-)
-
-func TestTrustMetricStoreSaveLoad(t *testing.T) {
-	dir, err := os.MkdirTemp("", "trust_test")
-	require.NoError(t, err)
-	defer os.Remove(dir)
-
-	historyDB, err := dbm.NewDB("trusthistory", "goleveldb", dir)
-	require.NoError(t, err)
-
-	// 0 peers saved
-	store := NewTrustMetricStore(historyDB, DefaultConfig())
-	store.SetLogger(log.TestingLogger())
-	store.saveToDB()
-	// Load the data from the file
-	store = NewTrustMetricStore(historyDB, DefaultConfig())
-	store.SetLogger(log.TestingLogger())
-	err = store.Start()
-	require.NoError(t, err)
-	// Make sure we still have 0 entries
-	assert.Zero(t, store.Size())
-
-	// 100 TestTickers
-	var tt []*TestTicker
-	for i := 0; i < 100; i++ {
-		// The TestTicker will provide manual control over
-		// the passing of time within the metric
-		tt = append(tt, NewTestTicker())
-	}
-	// 100 peers
-	for i := 0; i < 100; i++ {
-		key := fmt.Sprintf("peer_%d", i)
-		tm := NewMetric()
-
-		tm.SetTicker(tt[i])
-		err = tm.Start()
-		require.NoError(t, err)
-		store.AddPeerTrustMetric(key, tm)
-
-		tm.BadEvents(10)
-		tm.GoodEvents(1)
-	}
-	// Check that we have 100 entries and save
-	assert.Equal(t, 100, store.Size())
-	// Give the 100 metrics time to process the history data
-	for i := 0; i < 100; i++ {
-		tt[i].NextTick()
-		tt[i].NextTick()
-	}
-	// Stop all the trust metrics and save
-	err = store.Stop()
-	require.NoError(t, err)
-
-	// Load the data from the DB
-	store = NewTrustMetricStore(historyDB, DefaultConfig())
-	store.SetLogger(log.TestingLogger())
-	err = store.Start()
-	require.NoError(t, err)
-
-	// Check that we still have 100 peers with imperfect trust values
-	assert.Equal(t, 100, store.Size())
-	for _, tm := range store.peerMetrics {
-		assert.NotEqual(t, 1.0, tm.TrustValue())
-	}
-
-	err = store.Stop()
-	require.NoError(t, err)
-}
-
-func TestTrustMetricStoreConfig(t *testing.T) {
-	historyDB, err := dbm.NewDB("", "memdb", "")
-	require.NoError(t, err)
-
-	config := MetricConfig{
-		ProportionalWeight: 0.5,
-		IntegralWeight:     0.5,
-	}
-
-	// Create a store with custom config
-	store := NewTrustMetricStore(historyDB, config)
-	store.SetLogger(log.TestingLogger())
-	err = store.Start()
-	require.NoError(t, err)
-
-	// Have the store make us a metric with the config
-	tm := store.GetPeerTrustMetric("TestKey")
-
-	// Check that the options made it to the metric
-	assert.Equal(t, 0.5, tm.proportionalWeight)
-	assert.Equal(t, 0.5, tm.integralWeight)
-	err = store.Stop()
-	require.NoError(t, err)
-}
-
-func TestTrustMetricStoreLookup(t *testing.T) {
-	historyDB, err := dbm.NewDB("", "memdb", "")
-	require.NoError(t, err)
-
-	store := NewTrustMetricStore(historyDB, DefaultConfig())
-	store.SetLogger(log.TestingLogger())
-	err = store.Start()
-	require.NoError(t, err)
-
-	// Create 100 peers in the trust metric store
-	for i := 0; i < 100; i++ {
-		key := fmt.Sprintf("peer_%d", i)
-		store.GetPeerTrustMetric(key)
-
-		// Check that the trust metric was successfully entered
-		ktm := store.peerMetrics[key]
-		assert.NotNil(t, ktm, "Expected to find TrustMetric %s but wasn't there.", key)
-	}
-
-	err = store.Stop()
-	require.NoError(t, err)
-}
-
-func TestTrustMetricStorePeerScore(t *testing.T) {
-	historyDB, err := dbm.NewDB("", "memdb", "")
-	require.NoError(t, err)
-
-	store := NewTrustMetricStore(historyDB, DefaultConfig())
-	store.SetLogger(log.TestingLogger())
-	err = store.Start()
-	require.NoError(t, err)
-
-	key := "TestKey"
-	tm := store.GetPeerTrustMetric(key)
-
-	// This peer is innocent so far
-	first := tm.TrustScore()
-	assert.Equal(t, 100, first)
-
-	// Add some undesirable events and disconnect
-	tm.BadEvents(1)
-	first = tm.TrustScore()
-	assert.NotEqual(t, 100, first)
-	tm.BadEvents(10)
-	second := tm.TrustScore()
-
-	if second > first {
-		t.Errorf("a greater number of bad events should lower the trust score")
-	}
-	store.PeerDisconnected(key)
-
-	// We will remember our experiences with this peer
-	tm = store.GetPeerTrustMetric(key)
-	assert.NotEqual(t, 100, tm.TrustScore())
-	err = store.Stop()
-	require.NoError(t, err)
-}
--- a/p2p/trust/ticker.go
+++ b/p2p/trust/ticker.go
@@ -1,62 +0,0 @@
-// Copyright 2017 Tendermint. All rights reserved.
-// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
-
-package trust
-
-import (
-	"time"
-)
-
-// MetricTicker provides a single ticker interface for the trust metric
-type MetricTicker interface {
-	// GetChannel returns the receive only channel that fires at each time interval
-	GetChannel() <-chan time.Time
-
-	// Stop will halt further activity on the ticker channel
-	Stop()
-}
-
-// The ticker used during testing that provides manual control over time intervals
-type TestTicker struct {
-	C       chan time.Time
-	stopped bool
-}
-
-// NewTestTicker returns our ticker used within test routines
-func NewTestTicker() *TestTicker {
-	c := make(chan time.Time)
-	return &TestTicker{
-		C: c,
-	}
-}
-
-func (t *TestTicker) GetChannel() <-chan time.Time {
-	return t.C
-}
-
-func (t *TestTicker) Stop() {
-	t.stopped = true
-}
-
-// NextInterval manually sends Time on the ticker channel
-func (t *TestTicker) NextTick() {
-	if t.stopped {
-		return
-	}
-	t.C <- time.Now()
-}
-
-// Ticker is just a wrap around time.Ticker that allows it
-// to meet the requirements of our interface
-type Ticker struct {
-	*time.Ticker
-}
-
-// NewTicker returns a normal time.Ticker wrapped to meet our interface
-func NewTicker(d time.Duration) *Ticker {
-	return &Ticker{time.NewTicker(d)}
-}
-
-func (t *Ticker) GetChannel() <-chan time.Time {
-	return t.C
-}
--- a/p2p/types.go
+++ b/p2p/types.go
@@ -1,8 +1,40 @@
 package p2p

 import (
+	"github.com/cosmos/gogoproto/proto"
 	"github.com/tendermint/tendermint/p2p/conn"
+	tmp2p "github.com/tendermint/tendermint/proto/tendermint/p2p"
 )

 type ChannelDescriptor = conn.ChannelDescriptor
 type ConnectionStatus = conn.ConnectionStatus
+
+// Envelope contains a message with sender routing info.
+type Envelope struct {
+	Src       Peer          // sender (empty if outbound)
+	Message   proto.Message // message payload
+	ChannelID byte
+}
+
+// Unwrapper is a Protobuf message that can contain a variety of inner messages
+// (e.g. via oneof fields). If a Channel's message type implements Unwrapper, the
+// p2p layer will automatically unwrap inbound messages so that reactors do not have to do this themselves.
+type Unwrapper interface {
+	proto.Message
+
+	// Unwrap will unwrap the inner message contained in this message.
+	Unwrap() (proto.Message, error)
+}
+
+// Wrapper is a companion type to Unwrapper. It is a Protobuf message that can contain a variety of inner messages. The p2p layer will automatically wrap outbound messages so that the reactors do not have to do it themselves.
+type Wrapper interface {
+	proto.Message
+
+	// Wrap will take the underlying message and wrap it in its wrapper type.
+	Wrap() proto.Message
+}
+
+var (
+	_ Wrapper = &tmp2p.PexRequest{}
+	_ Wrapper = &tmp2p.PexAddrs{}
+)
--- a/proto/tendermint/blocksync/message.go
+++ b/proto/tendermint/blocksync/message.go
@@ -0,0 +1,73 @@
+package blocksync
+
+import (
+	"fmt"
+
+	"github.com/cosmos/gogoproto/proto"
+	"github.com/tendermint/tendermint/p2p"
+)
+
+var _ p2p.Wrapper = &StatusRequest{}
+var _ p2p.Wrapper = &StatusResponse{}
+var _ p2p.Wrapper = &NoBlockResponse{}
+var _ p2p.Wrapper = &BlockResponse{}
+var _ p2p.Wrapper = &BlockRequest{}
+
+const (
+	BlockResponseMessagePrefixSize   = 4
+	BlockResponseMessageFieldKeySize = 1
+)
+
+func (m *BlockRequest) Wrap() proto.Message {
+	bm := &Message{}
+	bm.Sum = &Message_BlockRequest{BlockRequest: m}
+	return bm
+}
+
+func (m *BlockResponse) Wrap() proto.Message {
+	bm := &Message{}
+	bm.Sum = &Message_BlockResponse{BlockResponse: m}
+	return bm
+}
+
+func (m *NoBlockResponse) Wrap() proto.Message {
+	bm := &Message{}
+	bm.Sum = &Message_NoBlockResponse{NoBlockResponse: m}
+	return bm
+}
+
+func (m *StatusRequest) Wrap() proto.Message {
+	bm := &Message{}
+	bm.Sum = &Message_StatusRequest{StatusRequest: m}
+	return bm
+}
+
+func (m *StatusResponse) Wrap() proto.Message {
+	bm := &Message{}
+	bm.Sum = &Message_StatusResponse{StatusResponse: m}
+	return bm
+}
+
+// Unwrap implements the p2p Wrapper interface and unwraps a wrapped blockchain
+// message.
+func (m *Message) Unwrap() (proto.Message, error) {
+	switch msg := m.Sum.(type) {
+	case *Message_BlockRequest:
+		return m.GetBlockRequest(), nil
+
+	case *Message_BlockResponse:
+		return m.GetBlockResponse(), nil
+
+	case *Message_NoBlockResponse:
+		return m.GetNoBlockResponse(), nil
+
+	case *Message_StatusRequest:
+		return m.GetStatusRequest(), nil
+
+	case *Message_StatusResponse:
+		return m.GetStatusResponse(), nil
+
+	default:
+		return nil, fmt.Errorf("unknown message: %T", msg)
+	}
+}
--- a/proto/tendermint/consensus/message.go
+++ b/proto/tendermint/consensus/message.go
@@ -0,0 +1,109 @@
+package consensus
+
+import (
+	"fmt"
+
+	"github.com/cosmos/gogoproto/proto"
+	"github.com/tendermint/tendermint/p2p"
+)
+
+var _ p2p.Wrapper = &VoteSetBits{}
+var _ p2p.Wrapper = &VoteSetMaj23{}
+var _ p2p.Wrapper = &Vote{}
+var _ p2p.Wrapper = &ProposalPOL{}
+var _ p2p.Wrapper = &Proposal{}
+var _ p2p.Wrapper = &NewValidBlock{}
+var _ p2p.Wrapper = &NewRoundStep{}
+var _ p2p.Wrapper = &HasVote{}
+var _ p2p.Wrapper = &BlockPart{}
+
+func (m *VoteSetBits) Wrap() proto.Message {
+	cm := &Message{}
+	cm.Sum = &Message_VoteSetBits{VoteSetBits: m}
+	return cm
+
+}
+
+func (m *VoteSetMaj23) Wrap() proto.Message {
+	cm := &Message{}
+	cm.Sum = &Message_VoteSetMaj23{VoteSetMaj23: m}
+	return cm
+}
+
+func (m *HasVote) Wrap() proto.Message {
+	cm := &Message{}
+	cm.Sum = &Message_HasVote{HasVote: m}
+	return cm
+}
+
+func (m *Vote) Wrap() proto.Message {
+	cm := &Message{}
+	cm.Sum = &Message_Vote{Vote: m}
+	return cm
+}
+
+func (m *BlockPart) Wrap() proto.Message {
+	cm := &Message{}
+	cm.Sum = &Message_BlockPart{BlockPart: m}
+	return cm
+}
+
+func (m *ProposalPOL) Wrap() proto.Message {
+	cm := &Message{}
+	cm.Sum = &Message_ProposalPol{ProposalPol: m}
+	return cm
+}
+
+func (m *Proposal) Wrap() proto.Message {
+	cm := &Message{}
+	cm.Sum = &Message_Proposal{Proposal: m}
+	return cm
+}
+
+func (m *NewValidBlock) Wrap() proto.Message {
+	cm := &Message{}
+	cm.Sum = &Message_NewValidBlock{NewValidBlock: m}
+	return cm
+}
+
+func (m *NewRoundStep) Wrap() proto.Message {
+	cm := &Message{}
+	cm.Sum = &Message_NewRoundStep{NewRoundStep: m}
+	return cm
+}
+
+// Unwrap implements the p2p Wrapper interface and unwraps a wrapped consensus
+// proto message.
+func (m *Message) Unwrap() (proto.Message, error) {
+	switch msg := m.Sum.(type) {
+	case *Message_NewRoundStep:
+		return m.GetNewRoundStep(), nil
+
+	case *Message_NewValidBlock:
+		return m.GetNewValidBlock(), nil
+
+	case *Message_Proposal:
+		return m.GetProposal(), nil
+
+	case *Message_ProposalPol:
+		return m.GetProposalPol(), nil
+
+	case *Message_BlockPart:
+		return m.GetBlockPart(), nil
+
+	case *Message_Vote:
+		return m.GetVote(), nil
+
+	case *Message_HasVote:
+		return m.GetHasVote(), nil
+
+	case *Message_VoteSetMaj23:
+		return m.GetVoteSetMaj23(), nil
+
+	case *Message_VoteSetBits:
+		return m.GetVoteSetBits(), nil
+
+	default:
+		return nil, fmt.Errorf("unknown message: %T", msg)
+	}
+}
--- a/proto/tendermint/mempool/message.go
+++ b/proto/tendermint/mempool/message.go
@@ -0,0 +1,30 @@
+package mempool
+
+import (
+	"fmt"
+
+	"github.com/cosmos/gogoproto/proto"
+	"github.com/tendermint/tendermint/p2p"
+)
+
+var _ p2p.Wrapper = &Txs{}
+var _ p2p.Unwrapper = &Message{}
+
+// Wrap implements the p2p Wrapper interface and wraps a mempool message.
+func (m *Txs) Wrap() proto.Message {
+	mm := &Message{}
+	mm.Sum = &Message_Txs{Txs: m}
+	return mm
+}
+
+// Unwrap implements the p2p Wrapper interface and unwraps a wrapped mempool
+// message.
+func (m *Message) Unwrap() (proto.Message, error) {
+	switch msg := m.Sum.(type) {
+	case *Message_Txs:
+		return m.GetTxs(), nil
+
+	default:
+		return nil, fmt.Errorf("unknown message: %T", msg)
+	}
+}
--- a/proto/tendermint/p2p/pex.go
+++ b/proto/tendermint/p2p/pex.go
@@ -0,0 +1,32 @@
+package p2p
+
+import (
+	"fmt"
+
+	"github.com/cosmos/gogoproto/proto"
+)
+
+func (m *PexAddrs) Wrap() proto.Message {
+	pm := &Message{}
+	pm.Sum = &Message_PexAddrs{PexAddrs: m}
+	return pm
+}
+
+func (m *PexRequest) Wrap() proto.Message {
+	pm := &Message{}
+	pm.Sum = &Message_PexRequest{PexRequest: m}
+	return pm
+}
+
+// Unwrap implements the p2p Wrapper interface and unwraps a wrapped PEX
+// message.
+func (m *Message) Unwrap() (proto.Message, error) {
+	switch msg := m.Sum.(type) {
+	case *Message_PexRequest:
+		return msg.PexRequest, nil
+	case *Message_PexAddrs:
+		return msg.PexAddrs, nil
+	default:
+		return nil, fmt.Errorf("unknown pex message: %T", msg)
+	}
+}
--- a/proto/tendermint/statesync/message.go
+++ b/proto/tendermint/statesync/message.go
@@ -0,0 +1,58 @@
+package statesync
+
+import (
+	"fmt"
+
+	"github.com/cosmos/gogoproto/proto"
+	"github.com/tendermint/tendermint/p2p"
+)
+
+var _ p2p.Wrapper = &ChunkRequest{}
+var _ p2p.Wrapper = &ChunkResponse{}
+var _ p2p.Wrapper = &SnapshotsRequest{}
+var _ p2p.Wrapper = &SnapshotsResponse{}
+
+func (m *SnapshotsResponse) Wrap() proto.Message {
+	sm := &Message{}
+	sm.Sum = &Message_SnapshotsResponse{SnapshotsResponse: m}
+	return sm
+}
+
+func (m *SnapshotsRequest) Wrap() proto.Message {
+	sm := &Message{}
+	sm.Sum = &Message_SnapshotsRequest{SnapshotsRequest: m}
+	return sm
+}
+
+func (m *ChunkResponse) Wrap() proto.Message {
+	sm := &Message{}
+	sm.Sum = &Message_ChunkResponse{ChunkResponse: m}
+	return sm
+}
+
+func (m *ChunkRequest) Wrap() proto.Message {
+	sm := &Message{}
+	sm.Sum = &Message_ChunkRequest{ChunkRequest: m}
+	return sm
+}
+
+// Unwrap implements the p2p Wrapper interface and unwraps a wrapped state sync
+// proto message.
+func (m *Message) Unwrap() (proto.Message, error) {
+	switch msg := m.Sum.(type) {
+	case *Message_ChunkRequest:
+		return m.GetChunkRequest(), nil
+
+	case *Message_ChunkResponse:
+		return m.GetChunkResponse(), nil
+
+	case *Message_SnapshotsRequest:
+		return m.GetSnapshotsRequest(), nil
+
+	case *Message_SnapshotsResponse:
+		return m.GetSnapshotsResponse(), nil
+
+	default:
+		return nil, fmt.Errorf("unknown message: %T", msg)
+	}
+}
--- a/rpc/core/env.go
+++ b/rpc/core/env.go
@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"time"

+	"github.com/tendermint/tendermint/blocksync"
 	cfg "github.com/tendermint/tendermint/config"
 	"github.com/tendermint/tendermint/consensus"
 	"github.com/tendermint/tendermint/crypto"
@@ -16,6 +17,7 @@ import (
 	sm "github.com/tendermint/tendermint/state"
 	"github.com/tendermint/tendermint/state/indexer"
 	"github.com/tendermint/tendermint/state/txindex"
+	"github.com/tendermint/tendermint/statesync"
 	"github.com/tendermint/tendermint/types"
 )

@@ -91,6 +93,8 @@ type Environment struct {
 	TxIndexer        txindex.TxIndexer
 	BlockIndexer     indexer.BlockIndexer
 	ConsensusReactor *consensus.Reactor
+	BlocksyncReactor *blocksync.Reactor
+	StatesyncReactor *statesync.Reactor
 	EventBus         *types.EventBus // thread safe
 	Mempool          mempl.Mempool

@@ -199,9 +203,5 @@ func getHeight(latestHeight int64, heightPtr *int64) (int64, error) {
 }

 func latestUncommittedHeight() int64 {
-	nodeIsSyncing := env.ConsensusReactor.WaitSync()
-	if nodeIsSyncing {
-		return env.BlockStore.Height()
-	}
 	return env.BlockStore.Height() + 1
 }
--- a/rpc/core/status.go
+++ b/rpc/core/status.go
@@ -51,6 +51,16 @@ func Status(ctx *rpctypes.Context) (*ctypes.ResultStatus, error) {
 		votingPower = val.VotingPower
 	}

+	phase := "initializing"
+	switch {
+	case env.StatesyncReactor.IsSyncing():
+		phase = "statesync"
+	case env.BlocksyncReactor.IsSyncing():
+		phase = "blocksync"
+	case env.ConsensusReactor.IsConsensusRunning():
+		phase = "consensus"
+	}
+
 	result := &ctypes.ResultStatus{
 		NodeInfo: env.P2PTransport.NodeInfo().(p2p.DefaultNodeInfo),
 		SyncInfo: ctypes.SyncInfo{
@@ -62,7 +72,7 @@ func Status(ctx *rpctypes.Context) (*ctypes.ResultStatus, error) {
 			EarliestAppHash:     earliestAppHash,
 			EarliestBlockHeight: earliestBlockHeight,
 			EarliestBlockTime:   time.Unix(0, earliestBlockTimeNano),
-			CatchingUp:          env.ConsensusReactor.WaitSync(),
+			Phase:               phase,
 		},
 		ValidatorInfo: ctypes.ValidatorInfo{
 			Address:     env.PubKey.Address(),
--- a/rpc/core/types/responses.go
+++ b/rpc/core/types/responses.go
@@ -86,7 +86,9 @@ type SyncInfo struct {
 	EarliestBlockHeight int64          `json:"earliest_block_height"`
 	EarliestBlockTime   time.Time      `json:"earliest_block_time"`

-	CatchingUp bool `json:"catching_up"`
+	// Phase inidicates which processes are advancing state:
+	// Either statesync, blocksync or consensus
+	Phase string `json:"phase"`
 }

 // Info about the node's validator
--- a/state/state.go
+++ b/state/state.go
@@ -81,6 +81,9 @@ type State struct {

 // Copy makes a copy of the State for mutating.
 func (state State) Copy() State {
+	if state.IsEmpty() {
+		return State{}
+	}

 	return State{
 		Version:       state.Version,
--- a/statesync/messages.go
+++ b/statesync/messages.go
@@ -16,49 +16,6 @@ const (
 	chunkMsgSize = int(16e6)
 )

-// mustEncodeMsg encodes a Protobuf message, panicing on error.
-func mustEncodeMsg(pb proto.Message) []byte {
-	msg := ssproto.Message{}
-	switch pb := pb.(type) {
-	case *ssproto.ChunkRequest:
-		msg.Sum = &ssproto.Message_ChunkRequest{ChunkRequest: pb}
-	case *ssproto.ChunkResponse:
-		msg.Sum = &ssproto.Message_ChunkResponse{ChunkResponse: pb}
-	case *ssproto.SnapshotsRequest:
-		msg.Sum = &ssproto.Message_SnapshotsRequest{SnapshotsRequest: pb}
-	case *ssproto.SnapshotsResponse:
-		msg.Sum = &ssproto.Message_SnapshotsResponse{SnapshotsResponse: pb}
-	default:
-		panic(fmt.Errorf("unknown message type %T", pb))
-	}
-	bz, err := msg.Marshal()
-	if err != nil {
-		panic(fmt.Errorf("unable to marshal %T: %w", pb, err))
-	}
-	return bz
-}
-
-// decodeMsg decodes a Protobuf message.
-func decodeMsg(bz []byte) (proto.Message, error) {
-	pb := &ssproto.Message{}
-	err := proto.Unmarshal(bz, pb)
-	if err != nil {
-		return nil, err
-	}
-	switch msg := pb.Sum.(type) {
-	case *ssproto.Message_ChunkRequest:
-		return msg.ChunkRequest, nil
-	case *ssproto.Message_ChunkResponse:
-		return msg.ChunkResponse, nil
-	case *ssproto.Message_SnapshotsRequest:
-		return msg.SnapshotsRequest, nil
-	case *ssproto.Message_SnapshotsResponse:
-		return msg.SnapshotsResponse, nil
-	default:
-		return nil, fmt.Errorf("unknown message type %T", msg)
-	}
-}
-
 // validateMsg validates a message.
 func validateMsg(pb proto.Message) error {
 	if pb == nil {
--- a/statesync/messages_test.go
+++ b/statesync/messages_test.go
@@ -7,6 +7,7 @@ import (
 	"github.com/cosmos/gogoproto/proto"
 	"github.com/stretchr/testify/require"

+	"github.com/tendermint/tendermint/p2p"
 	ssproto "github.com/tendermint/tendermint/proto/tendermint/statesync"
 	tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
 )
@@ -99,8 +100,9 @@ func TestStateSyncVectors(t *testing.T) {

 	for _, tc := range testCases {
 		tc := tc
-
-		bz := mustEncodeMsg(tc.msg)
+		w := tc.msg.(p2p.Wrapper).Wrap()
+		bz, err := proto.Marshal(w)
+		require.NoError(t, err)

 		require.Equal(t, tc.expBytes, hex.EncodeToString(bz), tc.testName)
 	}
--- a/statesync/metrics.gen.go
+++ b/statesync/metrics.gen.go
@@ -0,0 +1,30 @@
+// Code generated by metricsgen. DO NOT EDIT.
+
+package statesync
+
+import (
+	"github.com/go-kit/kit/metrics/discard"
+	prometheus "github.com/go-kit/kit/metrics/prometheus"
+	stdprometheus "github.com/prometheus/client_golang/prometheus"
+)
+
+func PrometheusMetrics(namespace string, labelsAndValues ...string) *Metrics {
+	labels := []string{}
+	for i := 0; i < len(labelsAndValues); i += 2 {
+		labels = append(labels, labelsAndValues[i])
+	}
+	return &Metrics{
+		Syncing: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
+			Namespace: namespace,
+			Subsystem: MetricsSubsystem,
+			Name:      "syncing",
+			Help:      "Whether or not a node is state syncing. 1 if yes, 0 if no.",
+		}, labels).With(labelsAndValues...),
+	}
+}
+
+func NopMetrics() *Metrics {
+	return &Metrics{
+		Syncing: discard.NewGauge(),
+	}
+}
--- a/statesync/metrics.go
+++ b/statesync/metrics.go
@@ -0,0 +1,19 @@
+package statesync
+
+import (
+	"github.com/go-kit/kit/metrics"
+)
+
+const (
+	// MetricsSubsystem is a subsystem shared by all metrics exposed by this
+	// package.
+	MetricsSubsystem = "statesync"
+)
+
+//go:generate go run ../scripts/metricsgen -struct=Metrics
+
+// Metrics contains metrics exposed by this package.
+type Metrics struct {
+	// Whether or not a node is state syncing. 1 if yes, 0 if no.
+	Syncing metrics.Gauge
+}
--- a/statesync/reactor.go
+++ b/statesync/reactor.go
@@ -33,6 +33,7 @@ type Reactor struct {
 	conn      proxy.AppConnSnapshot
 	connQuery proxy.AppConnQuery
 	tempDir   string
+	metrics   *Metrics

 	// This will only be set when a state sync is in progress. It is used to feed received
 	// snapshots and chunks into the sync.
@@ -46,12 +47,14 @@ func NewReactor(
 	conn proxy.AppConnSnapshot,
 	connQuery proxy.AppConnQuery,
 	tempDir string,
+	metrics *Metrics,
 ) *Reactor {

 	r := &Reactor{
 		cfg:       cfg,
 		conn:      conn,
 		connQuery: connQuery,
+		metrics:   metrics,
 	}
 	r.BaseReactor = *p2p.NewBaseReactor("StateSync", r)

@@ -66,12 +69,14 @@ func (r *Reactor) GetChannels() []*p2p.ChannelDescriptor {
 			Priority:            5,
 			SendQueueCapacity:   10,
 			RecvMessageCapacity: snapshotMsgSize,
+			MessageType:         &ssproto.Message{},
 		},
 		{
 			ID:                  ChunkChannel,
 			Priority:            3,
 			SendQueueCapacity:   10,
 			RecvMessageCapacity: chunkMsgSize,
+			MessageType:         &ssproto.Message{},
 		},
 	}
 }
@@ -90,6 +95,13 @@ func (r *Reactor) AddPeer(peer p2p.Peer) {
 	}
 }

+// IsSyncing returns true if state sync is actively being used to restore a state
+func (r *Reactor) IsSyncing() bool {
+	r.mtx.Lock()
+	defer r.mtx.Unlock()
+	return r.syncer != nil
+}
+
 // RemovePeer implements p2p.Reactor.
 func (r *Reactor) RemovePeer(peer p2p.Peer, reason interface{}) {
 	r.mtx.RLock()
@@ -100,27 +112,21 @@ func (r *Reactor) RemovePeer(peer p2p.Peer, reason interface{}) {
 }

 // Receive implements p2p.Reactor.
-func (r *Reactor) Receive(chID byte, src p2p.Peer, msgBytes []byte) {
+func (r *Reactor) Receive(e p2p.Envelope) {
 	if !r.IsRunning() {
 		return
 	}

-	msg, err := decodeMsg(msgBytes)
+	err := validateMsg(e.Message)
 	if err != nil {
-		r.Logger.Error("Error decoding message", "src", src, "chId", chID, "err", err)
-		r.Switch.StopPeerForError(src, err)
-		return
-	}
-	err = validateMsg(msg)
-	if err != nil {
-		r.Logger.Error("Invalid message", "peer", src, "msg", msg, "err", err)
-		r.Switch.StopPeerForError(src, err)
+		r.Logger.Error("Invalid message", "peer", e.Src, "msg", e.Message, "err", err)
+		r.Switch.StopPeerForError(e.Src, err)
 		return
 	}

-	switch chID {
+	switch e.ChannelID {
 	case SnapshotChannel:
-		switch msg := msg.(type) {
+		switch msg := e.Message.(type) {
 		case *ssproto.SnapshotsRequest:
 			snapshots, err := r.recentSnapshots(recentSnapshots)
 			if err != nil {
@@ -129,14 +135,17 @@ func (r *Reactor) Receive(chID byte, src p2p.Peer, msgBytes []byte) {
 			}
 			for _, snapshot := range snapshots {
 				r.Logger.Debug("Advertising snapshot", "height", snapshot.Height,
-					"format", snapshot.Format, "peer", src.ID())
-				src.Send(chID, mustEncodeMsg(&ssproto.SnapshotsResponse{
-					Height:   snapshot.Height,
-					Format:   snapshot.Format,
-					Chunks:   snapshot.Chunks,
-					Hash:     snapshot.Hash,
-					Metadata: snapshot.Metadata,
-				}))
+					"format", snapshot.Format, "peer", e.Src.ID())
+				e.Src.Send(p2p.Envelope{
+					ChannelID: e.ChannelID,
+					Message: &ssproto.SnapshotsResponse{
+						Height:   snapshot.Height,
+						Format:   snapshot.Format,
+						Chunks:   snapshot.Chunks,
+						Hash:     snapshot.Hash,
+						Metadata: snapshot.Metadata,
+					},
+				})
 			}

 		case *ssproto.SnapshotsResponse:
@@ -146,8 +155,8 @@ func (r *Reactor) Receive(chID byte, src p2p.Peer, msgBytes []byte) {
 				r.Logger.Debug("Received unexpected snapshot, no state sync in progress")
 				return
 			}
-			r.Logger.Debug("Received snapshot", "height", msg.Height, "format", msg.Format, "peer", src.ID())
-			_, err := r.syncer.AddSnapshot(src, &snapshot{
+			r.Logger.Debug("Received snapshot", "height", msg.Height, "format", msg.Format, "peer", e.Src.ID())
+			_, err := r.syncer.AddSnapshot(e.Src, &snapshot{
 				Height:   msg.Height,
 				Format:   msg.Format,
 				Chunks:   msg.Chunks,
@@ -157,7 +166,7 @@ func (r *Reactor) Receive(chID byte, src p2p.Peer, msgBytes []byte) {
 			// TODO: We may want to consider punishing the peer for certain errors
 			if err != nil {
 				r.Logger.Error("Failed to add snapshot", "height", msg.Height, "format", msg.Format,
-					"peer", src.ID(), "err", err)
+					"peer", e.Src.ID(), "err", err)
 				return
 			}

@@ -166,10 +175,10 @@ func (r *Reactor) Receive(chID byte, src p2p.Peer, msgBytes []byte) {
 		}

 	case ChunkChannel:
-		switch msg := msg.(type) {
+		switch msg := e.Message.(type) {
 		case *ssproto.ChunkRequest:
 			r.Logger.Debug("Received chunk request", "height", msg.Height, "format", msg.Format,
-				"chunk", msg.Index, "peer", src.ID())
+				"chunk", msg.Index, "peer", e.Src.ID())
 			resp, err := r.conn.LoadSnapshotChunkSync(abci.RequestLoadSnapshotChunk{
 				Height: msg.Height,
 				Format: msg.Format,
@@ -181,30 +190,33 @@ func (r *Reactor) Receive(chID byte, src p2p.Peer, msgBytes []byte) {
 				return
 			}
 			r.Logger.Debug("Sending chunk", "height", msg.Height, "format", msg.Format,
-				"chunk", msg.Index, "peer", src.ID())
-			src.Send(ChunkChannel, mustEncodeMsg(&ssproto.ChunkResponse{
-				Height:  msg.Height,
-				Format:  msg.Format,
-				Index:   msg.Index,
-				Chunk:   resp.Chunk,
-				Missing: resp.Chunk == nil,
-			}))
+				"chunk", msg.Index, "peer", e.Src.ID())
+			e.Src.Send(p2p.Envelope{
+				ChannelID: ChunkChannel,
+				Message: &ssproto.ChunkResponse{
+					Height:  msg.Height,
+					Format:  msg.Format,
+					Index:   msg.Index,
+					Chunk:   resp.Chunk,
+					Missing: resp.Chunk == nil,
+				},
+			})

 		case *ssproto.ChunkResponse:
 			r.mtx.RLock()
 			defer r.mtx.RUnlock()
 			if r.syncer == nil {
-				r.Logger.Debug("Received unexpected chunk, no state sync in progress", "peer", src.ID())
+				r.Logger.Debug("Received unexpected chunk, no state sync in progress", "peer", e.Src.ID())
 				return
 			}
 			r.Logger.Debug("Received chunk, adding to sync", "height", msg.Height, "format", msg.Format,
-				"chunk", msg.Index, "peer", src.ID())
+				"chunk", msg.Index, "peer", e.Src.ID())
 			_, err := r.syncer.AddChunk(&chunk{
 				Height: msg.Height,
 				Format: msg.Format,
 				Index:  msg.Index,
 				Chunk:  msg.Chunk,
-				Sender: src.ID(),
+				Sender: e.Src.ID(),
 			})
 			if err != nil {
 				r.Logger.Error("Failed to add chunk", "height", msg.Height, "format", msg.Format,
@@ -217,7 +229,7 @@ func (r *Reactor) Receive(chID byte, src p2p.Peer, msgBytes []byte) {
 		}

 	default:
-		r.Logger.Error("Received message on invalid channel %x", chID)
+		r.Logger.Error("Received message on invalid channel %x", e.ChannelID)
 	}
 }

@@ -263,13 +275,18 @@ func (r *Reactor) Sync(stateProvider StateProvider, discoveryTime time.Duration)
 		r.mtx.Unlock()
 		return sm.State{}, nil, errors.New("a state sync is already in progress")
 	}
+	r.metrics.Syncing.Add(1)
 	r.syncer = newSyncer(r.cfg, r.Logger, r.conn, r.connQuery, stateProvider, r.tempDir)
 	r.mtx.Unlock()

 	hook := func() {
 		r.Logger.Debug("Requesting snapshots from known peers")
 		// Request snapshots from all currently connected peers
-		r.Switch.Broadcast(SnapshotChannel, mustEncodeMsg(&ssproto.SnapshotsRequest{}))
+
+		r.Switch.Broadcast(p2p.Envelope{
+			ChannelID: SnapshotChannel,
+			Message:   &ssproto.SnapshotsRequest{},
+		})
 	}

 	hook()
@@ -278,6 +295,7 @@ func (r *Reactor) Sync(stateProvider StateProvider, discoveryTime time.Duration)

 	r.mtx.Lock()
 	r.syncer = nil
+	r.metrics.Syncing.Add(0)
 	r.mtx.Unlock()
 	return state, commit, err
 }
--- a/statesync/reactor_test.go
+++ b/statesync/reactor_test.go
@@ -4,6 +4,7 @@ import (
 	"testing"
 	"time"

+	"github.com/cosmos/gogoproto/proto"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/mock"
 	"github.com/stretchr/testify/require"
@@ -53,16 +54,24 @@ func TestReactor_Receive_ChunkRequest(t *testing.T) {
 			peer.On("ID").Return(p2p.ID("id"))
 			var response *ssproto.ChunkResponse
 			if tc.expectResponse != nil {
-				peer.On("Send", ChunkChannel, mock.Anything).Run(func(args mock.Arguments) {
-					msg, err := decodeMsg(args[1].([]byte))
+				peer.On("Send", mock.MatchedBy(func(i interface{}) bool {
+					e, ok := i.(p2p.Envelope)
+					return ok && e.ChannelID == ChunkChannel
+				})).Run(func(args mock.Arguments) {
+					e := args[0].(p2p.Envelope)
+
+					// Marshal to simulate a wire roundtrip.
+					bz, err := proto.Marshal(e.Message)
 					require.NoError(t, err)
-					response = msg.(*ssproto.ChunkResponse)
+					err = proto.Unmarshal(bz, e.Message)
+					require.NoError(t, err)
+					response = e.Message.(*ssproto.ChunkResponse)
 				}).Return(true)
 			}

 			// Start a reactor and send a ssproto.ChunkRequest, then wait for and check response
 			cfg := config.DefaultStateSyncConfig()
-			r := NewReactor(*cfg, conn, nil, "")
+			r := NewReactor(*cfg, conn, nil, "", NopMetrics())
 			err := r.Start()
 			require.NoError(t, err)
 			t.Cleanup(func() {
@@ -71,7 +80,11 @@ func TestReactor_Receive_ChunkRequest(t *testing.T) {
 				}
 			})

-			r.Receive(ChunkChannel, peer, mustEncodeMsg(tc.request))
+			r.Receive(p2p.Envelope{
+				ChannelID: ChunkChannel,
+				Src:       peer,
+				Message:   tc.request,
+			})
 			time.Sleep(100 * time.Millisecond)
 			assert.Equal(t, tc.expectResponse, response)

@@ -131,16 +144,24 @@ func TestReactor_Receive_SnapshotsRequest(t *testing.T) {
 			peer := &p2pmocks.Peer{}
 			if len(tc.expectResponses) > 0 {
 				peer.On("ID").Return(p2p.ID("id"))
-				peer.On("Send", SnapshotChannel, mock.Anything).Run(func(args mock.Arguments) {
-					msg, err := decodeMsg(args[1].([]byte))
+				peer.On("Send", mock.MatchedBy(func(i interface{}) bool {
+					e, ok := i.(p2p.Envelope)
+					return ok && e.ChannelID == SnapshotChannel
+				})).Run(func(args mock.Arguments) {
+					e := args[0].(p2p.Envelope)
+
+					// Marshal to simulate a wire roundtrip.
+					bz, err := proto.Marshal(e.Message)
 					require.NoError(t, err)
-					responses = append(responses, msg.(*ssproto.SnapshotsResponse))
+					err = proto.Unmarshal(bz, e.Message)
+					require.NoError(t, err)
+					responses = append(responses, e.Message.(*ssproto.SnapshotsResponse))
 				}).Return(true)
 			}

 			// Start a reactor and send a SnapshotsRequestMessage, then wait for and check responses
 			cfg := config.DefaultStateSyncConfig()
-			r := NewReactor(*cfg, conn, nil, "")
+			r := NewReactor(*cfg, conn, nil, "", NopMetrics())
 			err := r.Start()
 			require.NoError(t, err)
 			t.Cleanup(func() {
@@ -149,7 +170,11 @@ func TestReactor_Receive_SnapshotsRequest(t *testing.T) {
 				}
 			})

-			r.Receive(SnapshotChannel, peer, mustEncodeMsg(&ssproto.SnapshotsRequest{}))
+			r.Receive(p2p.Envelope{
+				ChannelID: SnapshotChannel,
+				Src:       peer,
+				Message:   &ssproto.SnapshotsRequest{},
+			})
 			time.Sleep(100 * time.Millisecond)
 			assert.Equal(t, tc.expectResponses, responses)

--- a/statesync/syncer.go
+++ b/statesync/syncer.go
@@ -126,7 +126,11 @@ func (s *syncer) AddSnapshot(peer p2p.Peer, snapshot *snapshot) (bool, error) {
 // to discover snapshots, later we may want to do retries and stuff.
 func (s *syncer) AddPeer(peer p2p.Peer) {
 	s.logger.Debug("Requesting snapshots from peer", "peer", peer.ID())
-	peer.Send(SnapshotChannel, mustEncodeMsg(&ssproto.SnapshotsRequest{}))
+	e := p2p.Envelope{
+		ChannelID: SnapshotChannel,
+		Message:   &ssproto.SnapshotsRequest{},
+	}
+	peer.Send(e)
 }

 // RemovePeer removes a peer from the pool.
@@ -467,11 +471,14 @@ func (s *syncer) requestChunk(snapshot *snapshot, chunk uint32) {
 	}
 	s.logger.Debug("Requesting snapshot chunk", "height", snapshot.Height,
 		"format", snapshot.Format, "chunk", chunk, "peer", peer.ID())
-	peer.Send(ChunkChannel, mustEncodeMsg(&ssproto.ChunkRequest{
-		Height: snapshot.Height,
-		Format: snapshot.Format,
-		Index:  chunk,
-	}))
+	peer.Send(p2p.Envelope{
+		ChannelID: ChunkChannel,
+		Message: &ssproto.ChunkRequest{
+			Height: snapshot.Height,
+			Format: snapshot.Format,
+			Index:  chunk,
+		},
+	})
 }

 // verifyApp verifies the sync, checking the app hash, last block height and app version
--- a/statesync/syncer_test.go
+++ b/statesync/syncer_test.go
@@ -98,13 +98,27 @@ func TestSyncer_SyncAny(t *testing.T) {
 	// Adding a couple of peers should trigger snapshot discovery messages
 	peerA := &p2pmocks.Peer{}
 	peerA.On("ID").Return(p2p.ID("a"))
-	peerA.On("Send", SnapshotChannel, mustEncodeMsg(&ssproto.SnapshotsRequest{})).Return(true)
+	peerA.On("Send", mock.MatchedBy(func(i interface{}) bool {
+		e, ok := i.(p2p.Envelope)
+		if !ok {
+			return false
+		}
+		req, ok := e.Message.(*ssproto.SnapshotsRequest)
+		return ok && e.ChannelID == SnapshotChannel && req != nil
+	})).Return(true)
 	syncer.AddPeer(peerA)
 	peerA.AssertExpectations(t)

 	peerB := &p2pmocks.Peer{}
 	peerB.On("ID").Return(p2p.ID("b"))
-	peerB.On("Send", SnapshotChannel, mustEncodeMsg(&ssproto.SnapshotsRequest{})).Return(true)
+	peerB.On("Send", mock.MatchedBy(func(i interface{}) bool {
+		e, ok := i.(p2p.Envelope)
+		if !ok {
+			return false
+		}
+		req, ok := e.Message.(*ssproto.SnapshotsRequest)
+		return ok && e.ChannelID == SnapshotChannel && req != nil
+	})).Return(true)
 	syncer.AddPeer(peerB)
 	peerB.AssertExpectations(t)

@@ -147,9 +161,9 @@ func TestSyncer_SyncAny(t *testing.T) {
 	chunkRequests := make(map[uint32]int)
 	chunkRequestsMtx := tmsync.Mutex{}
 	onChunkRequest := func(args mock.Arguments) {
-		pb, err := decodeMsg(args[1].([]byte))
-		require.NoError(t, err)
-		msg := pb.(*ssproto.ChunkRequest)
+		e, ok := args[0].(p2p.Envelope)
+		require.True(t, ok)
+		msg := e.Message.(*ssproto.ChunkRequest)
 		require.EqualValues(t, 1, msg.Height)
 		require.EqualValues(t, 1, msg.Format)
 		require.LessOrEqual(t, msg.Index, uint32(len(chunks)))
@@ -162,8 +176,14 @@ func TestSyncer_SyncAny(t *testing.T) {
 		chunkRequests[msg.Index]++
 		chunkRequestsMtx.Unlock()
 	}
-	peerA.On("Send", ChunkChannel, mock.Anything).Maybe().Run(onChunkRequest).Return(true)
-	peerB.On("Send", ChunkChannel, mock.Anything).Maybe().Run(onChunkRequest).Return(true)
+	peerA.On("Send", mock.MatchedBy(func(i interface{}) bool {
+		e, ok := i.(p2p.Envelope)
+		return ok && e.ChannelID == ChunkChannel
+	})).Maybe().Run(onChunkRequest).Return(true)
+	peerB.On("Send", mock.MatchedBy(func(i interface{}) bool {
+		e, ok := i.(p2p.Envelope)
+		return ok && e.ChannelID == ChunkChannel
+	})).Maybe().Run(onChunkRequest).Return(true)

 	// The first time we're applying chunk 2 we tell it to retry the snapshot and discard chunk 1,
 	// which should cause it to keep the existing chunk 0 and 2, and restart restoration from
--- a/test/e2e/node/config.go
+++ b/test/e2e/node/config.go
@@ -23,7 +23,6 @@ type Config struct {
 	PrivValServer    string                      `toml:"privval_server"`
 	PrivValKey       string                      `toml:"privval_key"`
 	PrivValState     string                      `toml:"privval_state"`
-	Misbehaviors     map[string]string           `toml:"misbehaviors"`
 	KeyType          string                      `toml:"key_type"`
 }

--- a/test/e2e/pkg/infra/docker/docker.go
+++ b/test/e2e/pkg/infra/docker/docker.go
@@ -0,0 +1,85 @@
+package docker
+
+import (
+	"bytes"
+	"os"
+	"path/filepath"
+	"text/template"
+
+	e2e "github.com/tendermint/tendermint/test/e2e/pkg"
+	"github.com/tendermint/tendermint/test/e2e/pkg/infra"
+)
+
+var _ infra.Provider = &Provider{}
+
+// Provider implements a docker-compose backed infrastructure provider.
+type Provider struct {
+	Testnet *e2e.Testnet
+}
+
+// Setup generates the docker-compose file and write it to disk, erroring if
+// any of these operations fail.
+func (p *Provider) Setup() error {
+	compose, err := dockerComposeBytes(p.Testnet)
+	if err != nil {
+		return err
+	}
+	//nolint: gosec
+	// G306: Expect WriteFile permissions to be 0600 or less
+	err = os.WriteFile(filepath.Join(p.Testnet.Dir, "docker-compose.yml"), compose, 0644)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+// dockerComposeBytes generates a Docker Compose config file for a testnet and returns the
+// file as bytes to be written out to disk.
+func dockerComposeBytes(testnet *e2e.Testnet) ([]byte, error) {
+	// Must use version 2 Docker Compose format, to support IPv6.
+	tmpl, err := template.New("docker-compose").Parse(`version: '2.4'
+networks:
+  {{ .Name }}:
+    labels:
+      e2e: true
+    driver: bridge
+{{- if .IPv6 }}
+    enable_ipv6: true
+{{- end }}
+    ipam:
+      driver: default
+      config:
+      - subnet: {{ .IP }}
+
+services:
+{{- range .Nodes }}
+  {{ .Name }}:
+    labels:
+      e2e: true
+    container_name: {{ .Name }}
+    image: tendermint/e2e-node
+{{- if eq .ABCIProtocol "builtin" }}
+    entrypoint: /usr/bin/entrypoint-builtin
+{{- end }}
+    init: true
+    ports:
+    - 26656
+    - {{ if .ProxyPort }}{{ .ProxyPort }}:{{ end }}26657
+    - 6060
+    volumes:
+    - ./{{ .Name }}:/tendermint
+    networks:
+      {{ $.Name }}:
+        ipv{{ if $.IPv6 }}6{{ else }}4{{ end}}_address: {{ .IP }}
+
+{{end}}`)
+	if err != nil {
+		return nil, err
+	}
+	var buf bytes.Buffer
+	err = tmpl.Execute(&buf, testnet)
+	if err != nil {
+		return nil, err
+	}
+	return buf.Bytes(), nil
+}
--- a/test/e2e/pkg/infra/provider.go
+++ b/test/e2e/pkg/infra/provider.go
@@ -0,0 +1,20 @@
+package infra
+
+// Provider defines an API for manipulating the infrastructure of a
+// specific set of testnet infrastructure.
+type Provider interface {
+
+	// Setup generates any necessary configuration for the infrastructure
+	// provider during testnet setup.
+	Setup() error
+}
+
+// NoopProvider implements the provider interface by performing noops for every
+// interface method. This may be useful if the infrastructure is managed by a
+// separate process.
+type NoopProvider struct {
+}
+
+func (NoopProvider) Setup() error { return nil }
+
+var _ Provider = NoopProvider{}
--- a/test/e2e/pkg/infrastructure.go
+++ b/test/e2e/pkg/infrastructure.go
@@ -0,0 +1,80 @@
+package e2e
+
+import (
+	"encoding/json"
+	"fmt"
+	"net"
+	"os"
+)
+
+const (
+	dockerIPv4CIDR = "10.186.73.0/24"
+	dockerIPv6CIDR = "fd80:b10c::/48"
+
+	globalIPv4CIDR = "0.0.0.0/0"
+)
+
+// InfrastructureData contains the relevant information for a set of existing
+// infrastructure that is to be used for running a testnet.
+type InfrastructureData struct {
+
+	// Provider is the name of infrastructure provider backing the testnet.
+	// For example, 'docker' if it is running locally in a docker network or
+	// 'digital-ocean', 'aws', 'google', etc. if it is from a cloud provider.
+	Provider string `json:"provider"`
+
+	// Instances is a map of all of the machine instances on which to run
+	// processes for a testnet.
+	// The key of the map is the name of the instance, which each must correspond
+	// to the names of one of the testnet nodes defined in the testnet manifest.
+	Instances map[string]InstanceData `json:"instances"`
+
+	// Network is the CIDR notation range of IP addresses that all of the instances'
+	// IP addresses are expected to be within.
+	Network string `json:"network"`
+}
+
+// InstanceData contains the relevant information for a machine instance backing
+// one of the nodes in the testnet.
+type InstanceData struct {
+	IPAddress net.IP `json:"ip_address"`
+}
+
+func NewDockerInfrastructureData(m Manifest) (InfrastructureData, error) {
+	netAddress := dockerIPv4CIDR
+	if m.IPv6 {
+		netAddress = dockerIPv6CIDR
+	}
+	_, ipNet, err := net.ParseCIDR(netAddress)
+	if err != nil {
+		return InfrastructureData{}, fmt.Errorf("invalid IP network address %q: %w", netAddress, err)
+	}
+	ipGen := newIPGenerator(ipNet)
+	ifd := InfrastructureData{
+		Provider:  "docker",
+		Instances: make(map[string]InstanceData),
+		Network:   netAddress,
+	}
+	for name := range m.Nodes {
+		ifd.Instances[name] = InstanceData{
+			IPAddress: ipGen.Next(),
+		}
+	}
+	return ifd, nil
+}
+
+func InfrastructureDataFromFile(p string) (InfrastructureData, error) {
+	ifd := InfrastructureData{}
+	b, err := os.ReadFile(p)
+	if err != nil {
+		return InfrastructureData{}, err
+	}
+	err = json.Unmarshal(b, &ifd)
+	if err != nil {
+		return InfrastructureData{}, err
+	}
+	if ifd.Network == "" {
+		ifd.Network = globalIPv4CIDR
+	}
+	return ifd, nil
+}
--- a/test/e2e/pkg/testnet.go
+++ b/test/e2e/pkg/testnet.go
@@ -21,8 +21,6 @@ import (
 const (
 	randomSeed     int64  = 2308084734268
 	proxyPortFirst uint32 = 5701
-	networkIPv4           = "10.186.73.0/24"
-	networkIPv6           = "fd80:b10c::/48"
 )

 type (
@@ -100,32 +98,20 @@ type Node struct {
 // The testnet generation must be deterministic, since it is generated
 // separately by the runner and the test cases. For this reason, testnets use a
 // random seed to generate e.g. keys.
-func LoadTestnet(file string) (*Testnet, error) {
-	manifest, err := LoadManifest(file)
-	if err != nil {
-		return nil, err
-	}
-	dir := strings.TrimSuffix(file, filepath.Ext(file))
-
-	// Set up resource generators. These must be deterministic.
-	netAddress := networkIPv4
-	if manifest.IPv6 {
-		netAddress = networkIPv6
-	}
-	_, ipNet, err := net.ParseCIDR(netAddress)
-	if err != nil {
-		return nil, fmt.Errorf("invalid IP network address %q: %w", netAddress, err)
-	}
-
-	ipGen := newIPGenerator(ipNet)
+func LoadTestnet(manifest Manifest, fname string, ifd InfrastructureData) (*Testnet, error) {
+	dir := strings.TrimSuffix(fname, filepath.Ext(fname))
 	keyGen := newKeyGenerator(randomSeed)
 	proxyPortGen := newPortGenerator(proxyPortFirst)
+	_, ipNet, err := net.ParseCIDR(ifd.Network)
+	if err != nil {
+		return nil, fmt.Errorf("invalid IP network address %q: %w", ifd.Network, err)
+	}

 	testnet := &Testnet{
 		Name:                 filepath.Base(dir),
-		File:                 file,
+		File:                 fname,
 		Dir:                  dir,
-		IP:                   ipGen.Network(),
+		IP:                   ipNet,
 		InitialHeight:        1,
 		InitialState:         manifest.InitialState,
 		Validators:           map[*Node]int64{},
@@ -156,12 +142,16 @@ func LoadTestnet(file string) (*Testnet, error) {

 	for _, name := range nodeNames {
 		nodeManifest := manifest.Nodes[name]
+		ind, ok := ifd.Instances[name]
+		if !ok {
+			return nil, fmt.Errorf("information for node '%s' missing from infrastucture data", name)
+		}
 		node := &Node{
 			Name:             name,
 			Testnet:          testnet,
 			PrivvalKey:       keyGen.Generate(manifest.KeyType),
 			NodeKey:          keyGen.Generate("ed25519"),
-			IP:               ipGen.Next(),
+			IP:               ind.IPAddress,
 			ProxyPort:        proxyPortGen.Next(),
 			Mode:             ModeValidator,
 			Database:         "goleveldb",
--- a/test/e2e/runner/main.go
+++ b/test/e2e/runner/main.go
@@ -2,6 +2,7 @@ package main

 import (
 	"context"
+	"errors"
 	"fmt"
 	"math/rand"
 	"os"
@@ -11,6 +12,8 @@ import (

 	"github.com/tendermint/tendermint/libs/log"
 	e2e "github.com/tendermint/tendermint/test/e2e/pkg"
+	"github.com/tendermint/tendermint/test/e2e/pkg/infra"
+	"github.com/tendermint/tendermint/test/e2e/pkg/infra/docker"
 )

 const randomSeed = 2308084734268
@@ -26,6 +29,7 @@ type CLI struct {
 	root     *cobra.Command
 	testnet  *e2e.Testnet
 	preserve bool
+	infp     infra.Provider
 }

 // NewCLI sets up the CLI.
@@ -41,19 +45,57 @@ func NewCLI() *CLI {
 			if err != nil {
 				return err
 			}
-			testnet, err := e2e.LoadTestnet(file)
+			m, err := e2e.LoadManifest(file)
 			if err != nil {
 				return err
 			}

+			inft, err := cmd.Flags().GetString("infrastructure-type")
+			if err != nil {
+				return err
+			}
+
+			var ifd e2e.InfrastructureData
+			switch inft {
+			case "docker":
+				var err error
+				ifd, err = e2e.NewDockerInfrastructureData(m)
+				if err != nil {
+					return err
+				}
+			case "digital-ocean":
+				p, err := cmd.Flags().GetString("infrastructure-data")
+				if err != nil {
+					return err
+				}
+				if p == "" {
+					return errors.New("'--infrastructure-data' must be set when using the 'digital-ocean' infrastructure-type")
+				}
+				ifd, err = e2e.InfrastructureDataFromFile(p)
+				if err != nil {
+					return fmt.Errorf("parsing infrastructure data: %s", err)
+				}
+			default:
+				return fmt.Errorf("unknown infrastructure type '%s'", inft)
+			}
+
+			testnet, err := e2e.LoadTestnet(m, file, ifd)
+			if err != nil {
+				return fmt.Errorf("loading testnet: %s", err)
+			}
+
 			cli.testnet = testnet
+			cli.infp = &infra.NoopProvider{}
+			if inft == "docker" {
+				cli.infp = &docker.Provider{Testnet: testnet}
+			}
 			return nil
 		},
 		RunE: func(cmd *cobra.Command, args []string) error {
 			if err := Cleanup(cli.testnet); err != nil {
 				return err
 			}
-			if err := Setup(cli.testnet); err != nil {
+			if err := Setup(cli.testnet, cli.infp); err != nil {
 				return err
 			}

@@ -118,6 +160,10 @@ func NewCLI() *CLI {
 	cli.root.PersistentFlags().StringP("file", "f", "", "Testnet TOML manifest")
 	_ = cli.root.MarkPersistentFlagRequired("file")

+	cli.root.PersistentFlags().StringP("infrastructure-type", "", "docker", "Backing infrastructure used to run the testnet. Either 'digital-ocean' or 'docker'")
+
+	cli.root.PersistentFlags().StringP("infrastructure-data", "", "", "path to the json file containing the infrastructure data. Only used if the 'infrastructure-type' is set to a value other than 'docker'")
+
 	cli.root.Flags().BoolVarP(&cli.preserve, "preserve", "p", false,
 		"Preserves the running of the test net after tests are completed")

@@ -125,7 +171,7 @@ func NewCLI() *CLI {
 		Use:   "setup",
 		Short: "Generates the testnet directory and configuration",
 		RunE: func(cmd *cobra.Command, args []string) error {
-			return Setup(cli.testnet)
+			return Setup(cli.testnet, cli.infp)
 		},
 	})

@@ -135,7 +181,7 @@ func NewCLI() *CLI {
 		RunE: func(cmd *cobra.Command, args []string) error {
 			_, err := os.Stat(cli.testnet.Dir)
 			if os.IsNotExist(err) {
-				err = Setup(cli.testnet)
+				err = Setup(cli.testnet, cli.infp)
 			}
 			if err != nil {
 				return err
@@ -258,7 +304,7 @@ Does not run any perbutations.
 			if err := Cleanup(cli.testnet); err != nil {
 				return err
 			}
-			if err := Setup(cli.testnet); err != nil {
+			if err := Setup(cli.testnet, cli.infp); err != nil {
 				return err
 			}

--- a/test/e2e/runner/setup.go
+++ b/test/e2e/runner/setup.go
@@ -10,9 +10,7 @@ import (
 	"path/filepath"
 	"regexp"
 	"sort"
-	"strconv"
 	"strings"
-	"text/template"
 	"time"

 	"github.com/BurntSushi/toml"
@@ -23,6 +21,7 @@ import (
 	"github.com/tendermint/tendermint/p2p"
 	"github.com/tendermint/tendermint/privval"
 	e2e "github.com/tendermint/tendermint/test/e2e/pkg"
+	"github.com/tendermint/tendermint/test/e2e/pkg/infra"
 	"github.com/tendermint/tendermint/types"
 )

@@ -39,7 +38,7 @@ const (
 )

 // Setup sets up the testnet configuration.
-func Setup(testnet *e2e.Testnet) error {
+func Setup(testnet *e2e.Testnet, infp infra.Provider) error {
 	logger.Info("setup", "msg", log.NewLazySprintf("Generating testnet files in %q", testnet.Dir))

 	err := os.MkdirAll(testnet.Dir, os.ModePerm)
@@ -47,11 +46,7 @@ func Setup(testnet *e2e.Testnet) error {
 		return err
 	}

-	compose, err := MakeDockerCompose(testnet)
-	if err != nil {
-		return err
-	}
-	err = os.WriteFile(filepath.Join(testnet.Dir, "docker-compose.yml"), compose, 0o644) //nolint:gosec
+	err = infp.Setup()
 	if err != nil {
 		return err
 	}
@@ -126,70 +121,6 @@ func Setup(testnet *e2e.Testnet) error {
 	return nil
 }

-// MakeDockerCompose generates a Docker Compose config for a testnet.
-func MakeDockerCompose(testnet *e2e.Testnet) ([]byte, error) {
-	// Must use version 2 Docker Compose format, to support IPv6.
-	tmpl, err := template.New("docker-compose").Funcs(template.FuncMap{
-		"misbehaviorsToString": func(misbehaviors map[int64]string) string {
-			str := ""
-			for height, misbehavior := range misbehaviors {
-				// after the first behavior set, a comma must be prepended
-				if str != "" {
-					str += ","
-				}
-				heightString := strconv.Itoa(int(height))
-				str += misbehavior + "," + heightString
-			}
-			return str
-		},
-	}).Parse(`version: '2.4'
-
-networks:
-  {{ .Name }}:
-    labels:
-      e2e: true
-    driver: bridge
-{{- if .IPv6 }}
-    enable_ipv6: true
-{{- end }}
-    ipam:
-      driver: default
-      config:
-      - subnet: {{ .IP }}
-
-services:
-{{- range .Nodes }}
-  {{ .Name }}:
-    labels:
-      e2e: true
-    container_name: {{ .Name }}
-    image: tendermint/e2e-node
-{{- if eq .ABCIProtocol "builtin" }}
-    entrypoint: /usr/bin/entrypoint-builtin
-{{- end }}
-    init: true
-    ports:
-    - 26656
-    - {{ if .ProxyPort }}{{ .ProxyPort }}:{{ end }}26657
-    - 6060
-    volumes:
-    - ./{{ .Name }}:/tendermint
-    networks:
-      {{ $.Name }}:
-        ipv{{ if $.IPv6 }}6{{ else }}4{{ end}}_address: {{ .IP }}
-
-{{end}}`)
-	if err != nil {
-		return nil, err
-	}
-	var buf bytes.Buffer
-	err = tmpl.Execute(&buf, testnet)
-	if err != nil {
-		return nil, err
-	}
-	return buf.Bytes(), nil
-}
-
 // MakeGenesis generates a genesis document.
 func MakeGenesis(testnet *e2e.Testnet) (types.GenesisDoc, error) {
 	genesis := types.GenesisDoc{
--- a/test/e2e/tests/e2e_test.go
+++ b/test/e2e/tests/e2e_test.go
@@ -66,23 +66,27 @@ func testNode(t *testing.T, testFunc func(*testing.T, e2e.Node)) {
 func loadTestnet(t *testing.T) e2e.Testnet {
 	t.Helper()

-	manifest := os.Getenv("E2E_MANIFEST")
-	if manifest == "" {
+	manifestFile := os.Getenv("E2E_MANIFEST")
+	if manifestFile == "" {
 		t.Skip("E2E_MANIFEST not set, not an end-to-end test run")
 	}
-	if !filepath.IsAbs(manifest) {
-		manifest = filepath.Join("..", manifest)
+	if !filepath.IsAbs(manifestFile) {
+		manifestFile = filepath.Join("..", manifestFile)
 	}

 	testnetCacheMtx.Lock()
 	defer testnetCacheMtx.Unlock()
-	if testnet, ok := testnetCache[manifest]; ok {
+	if testnet, ok := testnetCache[manifestFile]; ok {
 		return testnet
 	}
-
-	testnet, err := e2e.LoadTestnet(manifest)
+	m, err := e2e.LoadManifest(manifestFile)
 	require.NoError(t, err)
-	testnetCache[manifest] = *testnet
+	ifd, err := e2e.NewDockerInfrastructureData(m)
+	require.NoError(t, err)
+
+	testnet, err := e2e.LoadTestnet(m, manifestFile, ifd)
+	require.NoError(t, err)
+	testnetCache[manifestFile] = *testnet
 	return *testnet
 }

--- a/types/vote_set.go
+++ b/types/vote_set.go
@@ -101,7 +101,7 @@ func (voteSet *VoteSet) ChainID() string {

 // Implements VoteSetReader.
 func (voteSet *VoteSet) GetHeight() int64 {
-	if voteSet == nil {
+	if voteSet.IsEmpty() {
 		return 0
 	}
 	return voteSet.height
@@ -109,7 +109,7 @@ func (voteSet *VoteSet) GetHeight() int64 {

 // Implements VoteSetReader.
 func (voteSet *VoteSet) GetRound() int32 {
-	if voteSet == nil {
+	if voteSet.IsEmpty() {
 		return -1
 	}
 	return voteSet.round
@@ -117,7 +117,7 @@ func (voteSet *VoteSet) GetRound() int32 {

 // Implements VoteSetReader.
 func (voteSet *VoteSet) Type() byte {
-	if voteSet == nil {
+	if voteSet.IsEmpty() {
 		return 0x00
 	}
 	return byte(voteSet.signedMsgType)
@@ -125,12 +125,16 @@ func (voteSet *VoteSet) Type() byte {

 // Implements VoteSetReader.
 func (voteSet *VoteSet) Size() int {
-	if voteSet == nil {
+	if voteSet.IsEmpty() {
 		return 0
 	}
 	return voteSet.valSet.Size()
 }

+func (voteSet *VoteSet) IsEmpty() bool {
+	return voteSet == nil || voteSet.height == 0
+}
+
 // Returns added=true if vote is valid and new.
 // Otherwise returns err=ErrVote[
 //