add traffic reset for stats

observer/stats/wrapper/conn.go

@@ -19,12 +19,12 @@ var (
 
 type conn struct {
 	net.Conn
-	stats  *stats.Stats
+	stats  stats.Stats
 	closed chan struct{}
 	mu     sync.Mutex
 }
 
-func WrapConn(c net.Conn, pStats *stats.Stats) net.Conn {
+func WrapConn(c net.Conn, pStats stats.Stats) net.Conn {
 	if pStats == nil {
 		return c
 	}
@@ -84,10 +84,10 @@ func (c *conn) Metadata() metadata.Metadata {
 
 type packetConn struct {
 	net.PacketConn
-	stats *stats.Stats
+	stats stats.Stats
 }
 
-func WrapPacketConn(pc net.PacketConn, stats *stats.Stats) net.PacketConn {
+func WrapPacketConn(pc net.PacketConn, stats stats.Stats) net.PacketConn {
 	if stats == nil {
 		return pc
 	}
@@ -118,10 +118,10 @@ func (c *packetConn) Metadata() metadata.Metadata {
 
 type udpConn struct {
 	net.PacketConn
-	stats *stats.Stats
+	stats stats.Stats
 }
 
-func WrapUDPConn(pc net.PacketConn, stats *stats.Stats) udp.Conn {
+func WrapUDPConn(pc net.PacketConn, stats stats.Stats) udp.Conn {
 	return &udpConn{
 		PacketConn: pc,
 		stats:      stats,

observer/stats/wrapper/io.go

@@ -9,10 +9,10 @@ import (
 // readWriter is an io.ReadWriter with Stats.
 type readWriter struct {
 	io.ReadWriter
-	stats *stats.Stats
+	stats stats.Stats
 }
 
-func WrapReadWriter(rw io.ReadWriter, stats *stats.Stats) io.ReadWriter {
+func WrapReadWriter(rw io.ReadWriter, stats stats.Stats) io.ReadWriter {
 	if stats == nil {
 		return rw
 	}

observer/stats/wrapper/listener.go

@@ -7,11 +7,11 @@ import (
 )
 
 type listener struct {
-	stats *stats.Stats
+	stats stats.Stats
 	net.Listener
 }
 
-func WrapListener(ln net.Listener, stats *stats.Stats) net.Listener {
+func WrapListener(ln net.Listener, stats stats.Stats) net.Listener {
 	if stats == nil {
 		return ln
 	}