diff --git a/rafthttp/functional_test.go b/rafthttp/functional_test.go
index 50ae4c061..e07c0ba73 100644
--- a/rafthttp/functional_test.go
+++ b/rafthttp/functional_test.go
@@ -148,7 +148,7 @@ func newServerStats() *stats.ServerStats {
 func waitStreamWorking(p *peer) bool {
 	for i := 0; i < 1000; i++ {
 		time.Sleep(time.Millisecond)
-		if _, ok := p.msgAppWriter.writec(); !ok {
+		if _, ok := p.msgAppV2Writer.writec(); !ok {
 			continue
 		}
 		if _, ok := p.writer.writec(); !ok {
diff --git a/rafthttp/peer.go b/rafthttp/peer.go
index 5b70228df..8a95d5031 100644
--- a/rafthttp/peer.go
+++ b/rafthttp/peer.go
@@ -91,11 +91,11 @@ type peer struct {
 
 	status *peerStatus
 
-	msgAppWriter *streamWriter
-	writer       *streamWriter
-	pipeline     *pipeline
-	snapSender   *snapshotSender // snapshot sender to send v3 snapshot messages
-	msgAppReader *streamReader
+	msgAppV2Writer *streamWriter
+	writer         *streamWriter
+	pipeline       *pipeline
+	snapSender     *snapshotSender // snapshot sender to send v3 snapshot messages
+	msgAppV2Reader *streamReader
 
 	sendc    chan raftpb.Message
 	recvc    chan raftpb.Message
@@ -114,22 +114,22 @@ func startPeer(streamRt, pipelineRt http.RoundTripper, urls types.URLs, local, t
 	picker := newURLPicker(urls)
 	status := newPeerStatus(to)
 	p := &peer{
-		id:           to,
-		r:            r,
-		v3demo:       v3demo,
-		status:       status,
-		msgAppWriter: startStreamWriter(to, status, fs, r),
-		writer:       startStreamWriter(to, status, fs, r),
-		pipeline:     newPipeline(pipelineRt, picker, local, to, cid, status, fs, r, errorc),
-		snapSender:   newSnapshotSender(pipelineRt, picker, local, to, cid, status, snapst, r, errorc),
-		sendc:        make(chan raftpb.Message),
-		recvc:        make(chan raftpb.Message, recvBufSize),
-		propc:        make(chan raftpb.Message, maxPendingProposals),
-		newURLsC:     make(chan types.URLs),
-		pausec:       make(chan struct{}),
-		resumec:      make(chan struct{}),
-		stopc:        make(chan struct{}),
-		done:         make(chan struct{}),
+		id:             to,
+		r:              r,
+		v3demo:         v3demo,
+		status:         status,
+		msgAppV2Writer: startStreamWriter(to, status, fs, r),
+		writer:         startStreamWriter(to, status, fs, r),
+		pipeline:       newPipeline(pipelineRt, picker, local, to, cid, status, fs, r, errorc),
+		snapSender:     newSnapshotSender(pipelineRt, picker, local, to, cid, status, snapst, r, errorc),
+		sendc:          make(chan raftpb.Message),
+		recvc:          make(chan raftpb.Message, recvBufSize),
+		propc:          make(chan raftpb.Message, maxPendingProposals),
+		newURLsC:       make(chan types.URLs),
+		pausec:         make(chan struct{}),
+		resumec:        make(chan struct{}),
+		stopc:          make(chan struct{}),
+		done:           make(chan struct{}),
 	}
 
 	// Use go-routine for process of MsgProp because it is
@@ -148,7 +148,7 @@ func startPeer(streamRt, pipelineRt http.RoundTripper, urls types.URLs, local, t
 		}
 	}()
 
-	p.msgAppReader = startStreamReader(streamRt, picker, streamTypeMsgAppV2, local, to, cid, status, p.recvc, p.propc, errorc)
+	p.msgAppV2Reader = startStreamReader(streamRt, picker, streamTypeMsgAppV2, local, to, cid, status, p.recvc, p.propc, errorc)
 	reader := startStreamReader(streamRt, picker, streamTypeMessage, local, to, cid, status, p.recvc, p.propc, errorc)
 	go func() {
 		var paused bool
@@ -188,11 +188,11 @@ func startPeer(streamRt, pipelineRt http.RoundTripper, urls types.URLs, local, t
 				paused = false
 			case <-p.stopc:
 				cancel()
-				p.msgAppWriter.stop()
+				p.msgAppV2Writer.stop()
 				p.writer.stop()
 				p.pipeline.stop()
 				p.snapSender.stop()
-				p.msgAppReader.stop()
+				p.msgAppV2Reader.stop()
 				reader.stop()
 				close(p.done)
 				return
@@ -221,7 +221,7 @@ func (p *peer) attachOutgoingConn(conn *outgoingConn) {
 	var ok bool
 	switch conn.t {
 	case streamTypeMsgAppV2:
-		ok = p.msgAppWriter.attach(conn)
+		ok = p.msgAppV2Writer.attach(conn)
 	case streamTypeMessage:
 		ok = p.writer.attach(conn)
 	default:
@@ -264,7 +264,7 @@ func (p *peer) pick(m raftpb.Message) (writec chan<- raftpb.Message, picked stri
 	// stream for a long time, only use one of the N pipelines to send MsgSnap.
 	if isMsgSnap(m) {
 		return p.pipeline.msgc, pipelineMsg
-	} else if writec, ok = p.msgAppWriter.writec(); ok && isMsgApp(m) {
+	} else if writec, ok = p.msgAppV2Writer.writec(); ok && isMsgApp(m) {
 		return writec, streamAppV2
 	} else if writec, ok = p.writer.writec(); ok {
 		return writec, streamMsg
diff --git a/rafthttp/peer_test.go b/rafthttp/peer_test.go
index 0ad2f82b3..1b5dd66df 100644
--- a/rafthttp/peer_test.go
+++ b/rafthttp/peer_test.go
@@ -75,9 +75,9 @@ func TestPeerPick(t *testing.T) {
 	}
 	for i, tt := range tests {
 		peer := &peer{
-			msgAppWriter: &streamWriter{working: tt.msgappWorking},
-			writer:       &streamWriter{working: tt.messageWorking},
-			pipeline:     &pipeline{},
+			msgAppV2Writer: &streamWriter{working: tt.msgappWorking},
+			writer:         &streamWriter{working: tt.messageWorking},
+			pipeline:       &pipeline{},
 		}
 		_, picked := peer.pick(tt.m)
 		if picked != tt.wpicked {