From 6edd104cccb4b75f11ad221f136668a245040c52 Mon Sep 17 00:00:00 2001
From: billfort <fxbao@hotmail.com>
Date: Wed, 17 Apr 2024 19:01:51 +0800
Subject: [PATCH] Support WebRTC communication

Signed-off-by: billfort <fxbao@hotmail.com>
---
 api/common/interfaces.go             |  65 ++++-
 api/httpjson/RPCserver.go            |   1 +
 api/httpjson/client/client.go        |  33 +++
 api/webrtc/webrtc.go                 | 395 +++++++++++++++++++++++++++
 api/websocket/server/relay.go        |  32 +--
 api/websocket/server/server.go       | 366 +++++++++++--------------
 api/websocket/server/wsserver.go     | 117 ++++++++
 api/websocket/session/session.go     |  15 +-
 api/websocket/session/sessionlist.go |   4 +-
 api/websocket/websocket.go           |   8 +-
 cmd/nknd/commands/root.go            |   1 +
 config.local.json                    |   5 +
 config.mainnet.json                  |   5 +
 config.testnet.json                  |   5 +
 config/config.go                     |  10 +
 go.mod                               |  30 +-
 go.sum                               | 115 +++++++-
 17 files changed, 945 insertions(+), 262 deletions(-)
 create mode 100644 api/webrtc/webrtc.go
 create mode 100644 api/websocket/server/wsserver.go

diff --git a/api/common/interfaces.go b/api/common/interfaces.go
index e878ce226..e4e0dd7e1 100644
--- a/api/common/interfaces.go
+++ b/api/common/interfaces.go
@@ -7,9 +7,13 @@ import (
 	"encoding/json"
 	"fmt"
 	"net"
+	"net/url"
 	"strings"
+	"time"
 
 	"github.com/nknorg/nkn/v2/api/common/errcode"
+	"github.com/nknorg/nkn/v2/api/httpjson/client"
+	"github.com/nknorg/nkn/v2/api/webrtc"
 	"github.com/nknorg/nkn/v2/block"
 	"github.com/nknorg/nkn/v2/chain"
 	"github.com/nknorg/nkn/v2/common"
@@ -412,12 +416,13 @@ func getVersion(s Serverer, params map[string]interface{}, ctx context.Context)
 	return respPacking(errcode.SUCCESS, config.Version)
 }
 
-func NodeInfo(wsAddr, rpcAddr string, pubkey, id []byte) map[string]string {
+func NodeInfo(wsAddr, rpcAddr string, pubkey, id []byte, sdp string) map[string]string {
 	nodeInfo := make(map[string]string)
 	nodeInfo["addr"] = wsAddr
 	nodeInfo["rpcAddr"] = rpcAddr
 	nodeInfo["pubkey"] = hex.EncodeToString(pubkey)
 	nodeInfo["id"] = hex.EncodeToString(id)
+	nodeInfo["sdp"] = sdp
 	return nodeInfo
 }
 
@@ -444,7 +449,7 @@ func getWsAddr(s Serverer, params map[string]interface{}, ctx context.Context) m
 		return respPacking(errcode.INTERNAL_ERROR, err.Error())
 	}
 
-	return respPacking(errcode.SUCCESS, NodeInfo(wsAddr, rpcAddr, pubkey, id))
+	return respPacking(errcode.SUCCESS, NodeInfo(wsAddr, rpcAddr, pubkey, id, ""))
 }
 
 func getWssAddr(s Serverer, params map[string]interface{}, ctx context.Context) map[string]interface{} {
@@ -467,7 +472,7 @@ func getWssAddr(s Serverer, params map[string]interface{}, ctx context.Context)
 		return respPacking(errcode.INTERNAL_ERROR, err.Error())
 	}
 
-	return respPacking(errcode.SUCCESS, NodeInfo(wsAddr, rpcAddr, pubkey, id))
+	return respPacking(errcode.SUCCESS, NodeInfo(wsAddr, rpcAddr, pubkey, id, ""))
 }
 
 // getBalanceByAddr gets balance by address
@@ -953,6 +958,59 @@ func findSuccessorAddr(s Serverer, params map[string]interface{}, ctx context.Co
 	return respPacking(errcode.SUCCESS, addrs[0])
 }
 
+// getPeerAddr get a node address
+// params: {"address":<address>}
+// return: {"resultOrData":<result>|<error data>, "error":<errcode>}
+func getPeerAddr(s Serverer, params map[string]interface{}, ctx context.Context) map[string]interface{} {
+	if len(params) < 1 {
+		return RespPacking("length of params is less than 1", errcode.INVALID_PARAMS)
+	}
+
+	str, ok := params["address"].(string)
+	if !ok {
+		return RespPacking("address should be a string", errcode.INTERNAL_ERROR)
+	}
+
+	clientID, _, _, err := address.ParseClientAddress(str)
+	if err != nil {
+		return RespPacking(err.Error(), errcode.INTERNAL_ERROR)
+	}
+
+	wsAddr, rpcAddr, pubkey, id, err := s.GetNetNode().FindWsAddr(clientID)
+	if err != nil {
+		return RespPacking(err.Error(), errcode.INTERNAL_ERROR)
+	}
+
+	n := s.GetNetNode()
+	if n == nil {
+		return nil
+	}
+
+	if n.GetWsAddr() == wsAddr {
+		offer := params["offer"].(string)
+		peer := webrtc.NewPeer(config.Parameters.StunList)
+
+		err = peer.Answer(offer)
+		if err != nil {
+			return RespPacking(err.Error(), errcode.INTERNAL_ERROR)
+		}
+		select {
+		case answer := <-peer.OnSdp:
+			return RespPacking(NodeInfo(wsAddr, rpcAddr, pubkey, id, answer), errcode.SUCCESS)
+		case <-time.After(10 * time.Second):
+			return RespPacking(fmt.Errorf("webrtc, wait for sdp time out"), errcode.INTERNAL_ERROR)
+		}
+	}
+
+	reqAddr := (&url.URL{Scheme: "http", Host: rpcAddr}).String()
+	wsAddr, rpcAddr, pubkey, id, sdp, err := client.GetPeerAddr(reqAddr, params)
+	if err != nil {
+		return RespPacking(err.Error(), errcode.INTERNAL_ERROR)
+	}
+
+	return RespPacking(NodeInfo(wsAddr, rpcAddr, pubkey, id, sdp), errcode.SUCCESS)
+}
+
 var InitialAPIHandlers = map[string]APIHandler{
 	"getlatestblockhash":   {Handler: getLatestBlockHash, AccessCtrl: BIT_JSONRPC},
 	"getblock":             {Handler: getBlock, AccessCtrl: BIT_JSONRPC},
@@ -983,4 +1041,5 @@ var InitialAPIHandlers = map[string]APIHandler{
 	"findsuccessoraddr":    {Handler: findSuccessorAddr, AccessCtrl: BIT_JSONRPC},
 	"findsuccessoraddrs":   {Handler: findSuccessorAddrs, AccessCtrl: BIT_JSONRPC},
 	"getregistrant":        {Handler: getRegistrant, AccessCtrl: BIT_JSONRPC},
+	"getpeeraddr":          {Handler: getPeerAddr, AccessCtrl: BIT_JSONRPC},
 }
diff --git a/api/httpjson/RPCserver.go b/api/httpjson/RPCserver.go
index 96fd9d555..217b4cbd6 100644
--- a/api/httpjson/RPCserver.go
+++ b/api/httpjson/RPCserver.go
@@ -130,6 +130,7 @@ func (s *RPCServer) Handle(w http.ResponseWriter, r *http.Request) {
 			}
 			method, ok = request["method"].(string)
 			if !ok {
+				log.Warning("RPC Server - No function to call for ", method)
 				code = errcode.INVALID_METHOD
 			}
 			if request["params"] != nil {
diff --git a/api/httpjson/client/client.go b/api/httpjson/client/client.go
index 650f61a36..562e9b954 100644
--- a/api/httpjson/client/client.go
+++ b/api/httpjson/client/client.go
@@ -222,3 +222,36 @@ func GetNonceByAddr(remote, addr string, txPool bool) (uint64, uint32, error) {
 
 	return nonce, ret.Result.CurrentHeight, nil
 }
+
+func GetPeerAddr(remote string, params map[string]interface{}) (string, string, []byte, []byte, string, error) {
+	fmt.Println("......GetPeerAddr, remote: ", remote)
+	resp, err := Call(remote, "getpeeraddr", 0, params)
+	if err != nil {
+		return "", "", nil, nil, "", err
+	}
+
+	// log.Infof("Node-to-Node GetPeerAddr got resp: %v from %s\n", string(resp), remote)
+
+	var ret struct {
+		Result struct {
+			Addr    string `json:"addr"`
+			RpcAddr string `json:"rpcAddr"`
+			Pubkey  []byte `json:"pubkey"`
+			Id      []byte `json:"id"`
+			Sdp     string `json:"sdp"`
+		} `json:"result"`
+		Err map[string]interface{} `json:"error"`
+	}
+
+	if err := json.Unmarshal(resp, &ret); err != nil {
+		log.Error("Node-to-Node GetPeerAddr json.Unmarshal error: ", err)
+		return "", "", nil, nil, "", err
+	}
+	if len(ret.Err) != 0 { // resp.error NOT empty
+		log.Error("Node-to-Node GetPeerAddr ret.Err: ", ret.Err)
+		return "", "", nil, nil, "", fmt.Errorf("GetPeerAddr(%s) resp error: %v", remote, string(resp))
+	}
+
+	fmt.Printf("......GetPeerAddr got result: %+v\n", ret.Result)
+	return ret.Result.Addr, ret.Result.RpcAddr, ret.Result.Pubkey, ret.Result.Id, ret.Result.Sdp, nil
+}
diff --git a/api/webrtc/webrtc.go b/api/webrtc/webrtc.go
new file mode 100644
index 000000000..ac76d3823
--- /dev/null
+++ b/api/webrtc/webrtc.go
@@ -0,0 +1,395 @@
+package webrtc
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"os"
+	"sync"
+	"time"
+
+	"github.com/nknorg/nkn/v2/api/ratelimiter"
+	"github.com/nknorg/nkn/v2/api/websocket/session"
+	"github.com/nknorg/nkn/v2/config"
+	"github.com/nknorg/nkn/v2/util/log"
+	"github.com/pion/webrtc/v4"
+)
+
+// compitable to websocket
+const (
+	UnknownMessage = 0
+	TextMessage    = 1
+	BinaryMessage  = 2
+	CloseMessage   = 8
+	PingMessage    = 9
+	PongMessage    = 10
+
+	PingData = "ping"
+	PongData = "pong"
+)
+
+var NewConnection func(conn session.Conn, r *http.Request)
+
+type DataChannelMessage struct {
+	messageType int
+	data        []byte
+}
+
+type Peer struct {
+	pc        *webrtc.PeerConnection
+	dc        *webrtc.DataChannel
+	offer     string
+	answer    string
+	OnSdp     chan string
+	OnMessage chan DataChannelMessage
+
+	mutex         sync.RWMutex
+	isConnected   bool
+	readDeadline  time.Time
+	writeDeadline time.Time
+	readLimit     int64
+	pongHandler   func(string) error
+}
+
+func NewPeer(urls []string) *Peer {
+	p := &Peer{
+		OnSdp:       make(chan string, 1),
+		isConnected: false,
+		OnMessage:   make(chan DataChannelMessage, 128),
+	}
+
+	config := webrtc.Configuration{
+		ICEServers: []webrtc.ICEServer{
+			{
+				URLs: urls,
+			},
+		},
+	}
+	var err error
+	pc, err := webrtc.NewPeerConnection(config)
+	if err != nil {
+		log.Error("NewPeerConnection error: ", err)
+		return nil
+	}
+
+	p.pc = pc
+	return p
+}
+
+func (c *Peer) Offer(label string) error {
+	if c.pc == nil {
+		return fmt.Errorf("PeerConnection not available")
+	}
+
+	c.pc.OnICECandidate(func(candidate *webrtc.ICECandidate) {
+		if candidate == nil {
+			localDesc := c.pc.LocalDescription()
+			encodedDescr, err := Encode(localDesc)
+			if err != nil {
+				log.Error("WebRTC OnICECandidate error: ", err)
+				return
+			}
+			c.offer = encodedDescr
+			c.OnSdp <- encodedDescr
+		}
+	})
+
+	dc, err := c.pc.CreateDataChannel(label, nil)
+	if err != nil {
+		return err
+	}
+	dc.OnOpen(func() {
+		log.Debugf("data channel %v has been opened\n", dc.Label())
+		c.mutex.Lock()
+		defer c.mutex.Unlock()
+		c.isConnected = true
+	})
+	dc.OnMessage(func(msg webrtc.DataChannelMessage) {
+		var dcmsg DataChannelMessage
+		if msg.IsString {
+			dcmsg.messageType = TextMessage
+			if string(msg.Data) == PongData {
+				if c.pongHandler != nil {
+					c.pongHandler(PongData)
+				} else {
+					log.Info("Pong handler not set")
+				}
+				return
+			} else if string(msg.Data) == PingData {
+				dc.SendText(PongData)
+				return
+			}
+		} else {
+			dcmsg.messageType = BinaryMessage
+		}
+		dcmsg.data = msg.Data
+		c.OnMessage <- dcmsg
+	})
+	dc.OnClose(func() {
+		c.mutex.Lock()
+		defer c.mutex.Unlock()
+		c.isConnected = false
+	})
+
+	dc.OnError(func(err error) {
+		log.Errorf("Data Channel %s error: %s\n", dc.Label(), err.Error())
+	})
+
+	offer, err := c.pc.CreateOffer(&webrtc.OfferOptions{ICERestart: false})
+	if err != nil {
+		return nil
+	}
+	if err = c.pc.SetLocalDescription(offer); err != nil {
+		return nil
+	}
+
+	c.dc = dc
+	return nil
+}
+
+func (c *Peer) Answer(offerSdp string) error {
+	offer := webrtc.SessionDescription{}
+	err := Decode(offerSdp, &offer)
+	if err != nil {
+		return err
+	}
+
+	sdp, err := offer.Unmarshal()
+	if err != nil {
+		return err
+	}
+	limiter := ratelimiter.GetLimiter("webrtc:"+sdp.Origin.UnicastAddress, config.Parameters.WsIPRateLimit, int(config.Parameters.WsIPRateBurst))
+	if !limiter.Allow() {
+		return fmt.Errorf("webrtc connection limit of %s reached", sdp.Origin.UnicastAddress)
+	}
+
+	if err := c.pc.SetRemoteDescription(offer); err != nil {
+		return err
+	}
+
+	answer, err := c.pc.CreateAnswer(nil)
+	if err != nil {
+		return err
+	}
+
+	if err := c.pc.SetLocalDescription(answer); err != nil {
+		return err
+	}
+
+	c.pc.OnICECandidate(func(candidate *webrtc.ICECandidate) {
+		if candidate == nil {
+			localDesc := c.pc.LocalDescription()
+			encodedDescr, err := Encode(localDesc)
+			if err != nil {
+				log.Error("WebRTC OnICECandidate error: ", err)
+				return
+			}
+			c.answer = encodedDescr
+			c.OnSdp <- encodedDescr
+		}
+	})
+
+	c.pc.OnDataChannel(func(dc *webrtc.DataChannel) {
+		dc.OnOpen(func() {
+			c.dc = dc
+
+			c.mutex.Lock()
+			c.isConnected = true
+			c.mutex.Unlock()
+
+			if NewConnection != nil {
+				go NewConnection(c, nil)
+			}
+		})
+
+		dc.OnMessage(func(msg webrtc.DataChannelMessage) {
+			var dcmsg DataChannelMessage
+			if msg.IsString {
+				dcmsg.messageType = TextMessage
+				if string(msg.Data) == PingData {
+					dc.SendText(PongData)
+					return
+				} else if string(msg.Data) == PongData {
+					if c.pongHandler != nil {
+						c.pongHandler(PongData)
+					} else {
+						log.Info("Pong handler not set")
+					}
+					return
+				}
+			} else {
+				dcmsg.messageType = BinaryMessage
+			}
+			dcmsg.data = msg.Data
+			c.OnMessage <- dcmsg
+		})
+
+		dc.OnClose(func() {
+			c.mutex.Lock()
+			c.isConnected = false
+			c.mutex.Unlock()
+		})
+
+		dc.OnError(func(err error) {
+			log.Errorf("Data Channel %v error: %s\n", dc.Label(), err.Error())
+		})
+	})
+
+	return nil
+}
+
+func (c *Peer) IsConnected() bool {
+	c.mutex.RLock()
+	defer c.mutex.RUnlock()
+	return c.isConnected
+}
+
+func (c *Peer) SetRemoteSdp(sdp string) error {
+	answer := webrtc.SessionDescription{}
+	err := Decode(sdp, &answer)
+	if err != nil {
+		return err
+	}
+	return c.pc.SetRemoteDescription(answer)
+}
+
+func (c *Peer) WriteMessage(messageType int, data []byte) (err error) {
+	if c.dc == nil {
+		return fmt.Errorf("DataChannel not available")
+	}
+
+	if messageType == PingMessage {
+		return c.dc.SendText(PingData)
+	}
+	if messageType == PongMessage {
+		return c.dc.SendText(PongData)
+	}
+	if data == nil {
+		return fmt.Errorf("data to send is nil")
+	}
+
+	if c.writeDeadline.IsZero() {
+		if messageType == TextMessage {
+			err = c.dc.SendText(string(data))
+		} else {
+			err = c.dc.Send(data)
+		}
+		return err
+	}
+
+	var dur time.Duration
+	now := time.Now()
+	switch {
+	case c.writeDeadline.Before(now), c.writeDeadline == now:
+		return os.ErrDeadlineExceeded
+
+	case c.writeDeadline.After(now):
+		writeResult := make(chan error)
+		go func() {
+			if messageType == TextMessage {
+				err = c.dc.SendText(string(data))
+			} else {
+				err = c.dc.Send(data)
+			}
+
+			writeResult <- err
+		}()
+
+		dur = time.Until(c.writeDeadline)
+		select {
+		case err = <-writeResult:
+			return err
+		case <-time.After(dur):
+			return os.ErrDeadlineExceeded
+		}
+	}
+
+	return fmt.Errorf("unknown error")
+}
+
+// WriteJSON writes the JSON encoding of v as a message.
+func (c *Peer) WriteJSON(v interface{}) error {
+	b, err := json.Marshal(v)
+	if err != nil {
+		return err
+	}
+	return c.WriteMessage(TextMessage, b)
+}
+
+func (c *Peer) ReadMessage() (messageType int, data []byte, err error) {
+	if c.readDeadline.IsZero() {
+		msg := <-c.OnMessage
+		return msg.messageType, msg.data, nil
+	}
+
+	now := time.Now()
+	switch {
+	case c.readDeadline.After(now):
+		for {
+			oldReadDeadline := c.readDeadline
+			dur := time.Until(c.readDeadline)
+			select {
+			case msg := <-c.OnMessage:
+				return msg.messageType, msg.data, nil
+			case <-time.After(dur):
+				if c.readDeadline.After(oldReadDeadline) {
+					continue
+				}
+				return UnknownMessage, nil, os.ErrDeadlineExceeded
+			}
+		}
+
+	case c.readDeadline.Before(now), c.readDeadline == now:
+		return UnknownMessage, nil, os.ErrDeadlineExceeded
+	}
+
+	return UnknownMessage, nil, fmt.Errorf("unknown error")
+}
+
+func (c *Peer) SetWriteDeadline(t time.Time) error {
+	c.writeDeadline = t
+	return nil
+}
+
+func (c *Peer) SetReadDeadline(t time.Time) error {
+	c.readDeadline = t
+	return nil
+}
+
+func (c *Peer) SetReadLimit(l int64) {
+	c.readLimit = l
+}
+
+func (c *Peer) Close() error {
+	if c.dc != nil {
+		if err := c.dc.Close(); err != nil {
+			return err
+		}
+	}
+	return c.pc.Close()
+}
+
+func (c *Peer) SetPongHandler(f func(string) error) {
+	c.pongHandler = f
+}
+
+// Encode the input in base64
+func Encode(obj interface{}) (string, error) {
+	b, err := json.Marshal(obj)
+	if err != nil {
+		return "", err
+	}
+
+	return base64.StdEncoding.EncodeToString(b), nil
+}
+
+// Decode the input from base64
+func Decode(in string, obj interface{}) error {
+	b, err := base64.StdEncoding.DecodeString(in)
+	if err != nil {
+		return err
+	}
+
+	return json.Unmarshal(b, obj)
+}
diff --git a/api/websocket/server/relay.go b/api/websocket/server/relay.go
index 1900de4ea..d3bb83b6c 100644
--- a/api/websocket/server/relay.go
+++ b/api/websocket/server/relay.go
@@ -18,7 +18,7 @@ type sigChainInfo struct {
 	sigChainLen int
 }
 
-func (ws *WsServer) sendOutboundRelayMessage(srcAddrStrPtr *string, msg *pb.OutboundMessage) {
+func (ms *MsgServer) sendOutboundRelayMessage(srcAddrStrPtr *string, msg *pb.OutboundMessage) {
 	if srcAddrStrPtr == nil {
 		log.Warningf("src addr is nil")
 		return
@@ -56,15 +56,15 @@ func (ws *WsServer) sendOutboundRelayMessage(srcAddrStrPtr *string, msg *pb.Outb
 		} else {
 			payload = payloads[0]
 		}
-		err := ws.localNode.SendRelayMessage(*srcAddrStrPtr, dest, payload, msg.Signatures[i], msg.BlockHash, msg.Nonce, msg.MaxHoldingSeconds)
+		err := ms.localNode.SendRelayMessage(*srcAddrStrPtr, dest, payload, msg.Signatures[i], msg.BlockHash, msg.Nonce, msg.MaxHoldingSeconds)
 		if err != nil {
 			log.Error("Send relay message error:", err)
 		}
 	}
 }
 
-func (ws *WsServer) sendInboundMessage(clientID string, inboundMsg *pb.InboundMessage) bool {
-	clients := ws.SessionList.GetSessionsById(clientID)
+func (ms *MsgServer) sendInboundMessage(clientID string, inboundMsg *pb.InboundMessage) bool {
+	clients := ms.SessionList.GetSessionsById(clientID)
 	if clients == nil {
 		log.Debugf("Client Not Online: %s", clientID)
 		return false
@@ -105,7 +105,7 @@ func (ws *WsServer) sendInboundMessage(clientID string, inboundMsg *pb.InboundMe
 	return success
 }
 
-func (ws *WsServer) sendInboundRelayMessage(relayMessage *pb.Relay, shouldSign bool) {
+func (ms *MsgServer) sendInboundRelayMessage(relayMessage *pb.Relay, shouldSign bool) {
 	clientID := relayMessage.DestId
 	msg := &pb.InboundMessage{
 		Src:     address.AssembleClientAddress(relayMessage.SrcIdentifier, relayMessage.SrcPubkey),
@@ -119,34 +119,34 @@ func (ws *WsServer) sendInboundRelayMessage(relayMessage *pb.Relay, shouldSign b
 		}
 	}
 
-	success := ws.sendInboundMessage(hex.EncodeToString(clientID), msg)
+	success := ms.sendInboundMessage(hex.EncodeToString(clientID), msg)
 	if success {
 		if shouldSign {
-			ws.sigChainCache.Add(relayMessage.LastHash, &sigChainInfo{
+			ms.sigChainCache.Add(relayMessage.LastHash, &sigChainInfo{
 				blockHash:   relayMessage.BlockHash,
 				sigChainLen: int(relayMessage.SigChainLen),
 			})
 		}
 		if time.Duration(relayMessage.MaxHoldingSeconds) > pongTimeout/time.Second {
-			ok := ws.messageDeliveredCache.Push(relayMessage)
+			ok := ms.messageDeliveredCache.Push(relayMessage)
 			if !ok {
 				log.Warningf("MessageDeliveredCache full, discarding messages.")
 			}
 		}
 	} else if relayMessage.MaxHoldingSeconds > 0 {
-		ws.messageBuffer.AddMessage(clientID, relayMessage)
+		ms.messageBuffer.AddMessage(clientID, relayMessage)
 	}
 }
 
-func (ws *WsServer) startCheckingLostMessages() {
+func (ms *MsgServer) startCheckingLostMessages() {
 	for {
-		v, ok := ws.messageDeliveredCache.Pop()
+		v, ok := ms.messageDeliveredCache.Pop()
 		if !ok {
 			break
 		}
 		if relayMessage, ok := v.(*pb.Relay); ok {
 			clientID := relayMessage.DestId
-			clients := ws.SessionList.GetSessionsById(hex.EncodeToString(clientID))
+			clients := ms.SessionList.GetSessionsById(hex.EncodeToString(clientID))
 			if len(clients) > 0 {
 				threshold := time.Now().Add(-pongTimeout)
 				success := false
@@ -157,17 +157,17 @@ func (ws *WsServer) startCheckingLostMessages() {
 					}
 				}
 				if !success {
-					ws.sendInboundRelayMessage(relayMessage, false)
+					ms.sendInboundRelayMessage(relayMessage, false)
 				}
 				continue
 			}
-			ws.messageBuffer.AddMessage(clientID, relayMessage)
+			ms.messageBuffer.AddMessage(clientID, relayMessage)
 		}
 	}
 }
 
-func (ws *WsServer) handleReceipt(receipt *pb.Receipt) error {
-	v, ok := ws.sigChainCache.Get(receipt.PrevHash)
+func (ms *MsgServer) handleReceipt(receipt *pb.Receipt) error {
+	v, ok := ms.sigChainCache.Get(receipt.PrevHash)
 	if !ok {
 		return fmt.Errorf("sigchain info with last hash %x not found in cache", receipt.PrevHash)
 	}
diff --git a/api/websocket/server/server.go b/api/websocket/server/server.go
index a0d79737f..2e56998af 100644
--- a/api/websocket/server/server.go
+++ b/api/websocket/server/server.go
@@ -20,7 +20,7 @@ import (
 	"github.com/golang/protobuf/proto"
 	api "github.com/nknorg/nkn/v2/api/common"
 	"github.com/nknorg/nkn/v2/api/common/errcode"
-	"github.com/nknorg/nkn/v2/api/ratelimiter"
+	"github.com/nknorg/nkn/v2/api/webrtc"
 	"github.com/nknorg/nkn/v2/api/websocket/messagebuffer"
 	"github.com/nknorg/nkn/v2/api/websocket/session"
 	"github.com/nknorg/nkn/v2/chain"
@@ -53,13 +53,8 @@ type Handler struct {
 	pushFlag bool
 }
 
-type WsServer struct {
+type MsgServer struct {
 	sync.RWMutex
-	Upgrader              websocket.Upgrader
-	listener              net.Listener
-	tlsListener           net.Listener
-	server                *http.Server
-	tlsServer             *http.Server
 	SessionList           *session.SessionList
 	ActionMap             map[string]Handler
 	TxHashMap             map[string]string //key: txHash   value:sessionid
@@ -68,11 +63,11 @@ type WsServer struct {
 	messageBuffer         *messagebuffer.MessageBuffer
 	messageDeliveredCache *DelayedChan
 	sigChainCache         common.Cache
+	ws                    *wsServer
 }
 
-func InitWsServer(localNode node.ILocalNode, wallet *vault.Wallet) *WsServer {
-	ws := &WsServer{
-		Upgrader:              websocket.Upgrader{},
+func InitMsgServer(localNode node.ILocalNode, wallet *vault.Wallet) *MsgServer {
+	ws := &MsgServer{
 		SessionList:           session.NewSessionList(),
 		TxHashMap:             make(map[string]string),
 		localNode:             localNode,
@@ -80,68 +75,31 @@ func InitWsServer(localNode node.ILocalNode, wallet *vault.Wallet) *WsServer {
 		messageBuffer:         messagebuffer.NewMessageBuffer(true),
 		messageDeliveredCache: NewDelayedChan(messageDeliveredCacheSize, pongTimeout),
 		sigChainCache:         common.NewGoCache(sigChainCacheExpiration, sigChainCacheCleanupInterval),
+		ws:                    &wsServer{},
 	}
 	return ws
 }
 
-func (ws *WsServer) Start(wssCertReady chan struct{}) error {
-	if config.Parameters.HttpWsPort == 0 {
-		log.Error("Not configure HttpWsPort port ")
-		return nil
-	}
-	ws.registryMethod()
-	ws.Upgrader.CheckOrigin = func(r *http.Request) bool {
-		return true
-	}
+func (ms *MsgServer) Start(wssCertReady chan struct{}) error {
 
-	var err error
+	ms.ws.Start(ms, wssCertReady)
+	ms.registryMethod()
 
-	ws.listener, err = net.Listen("tcp", ":"+strconv.Itoa(int(config.Parameters.HttpWsPort)))
-	if err != nil {
-		log.Error("net.Listen: ", err.Error())
-		return err
-	}
-
-	event.Queue.Subscribe(event.SendInboundMessageToClient, ws.sendInboundRelayMessageToClient)
+	go ms.startCheckingLostMessages()
+	go ms.startCheckingWrongClients()
 
-	ws.server = &http.Server{Handler: http.HandlerFunc(ws.websocketHandler)}
-	go ws.server.Serve(ws.listener)
+	event.Queue.Subscribe(event.SendInboundMessageToClient, ms.sendInboundRelayMessageToClient)
 
-	go func(wssCertReady chan struct{}) {
-		if wssCertReady == nil {
-			return
-		}
-		for {
-			select {
-			case <-wssCertReady:
-				log.Info("wss cert received")
-				ws.tlsListener, err = ws.initTlsListen()
-				if err != nil {
-					log.Error("Https Cert: ", err.Error())
-				}
-				err = ws.server.Serve(ws.tlsListener)
-				if err != nil {
-					log.Error(err)
-				}
-				return
-			case <-time.After(300 * time.Second):
-				log.Info("wss server is unavailable yet")
-			}
-		}
-	}(wssCertReady)
-
-	go ws.startCheckingLostMessages()
-
-	go ws.startCheckingWrongClients()
+	webrtc.NewConnection = ms.newConnection
 
 	return nil
 }
 
-func (ws *WsServer) registryMethod() {
+func (ms *MsgServer) registryMethod() {
 	gettxhashmap := func(s api.Serverer, cmd map[string]interface{}, ctx context.Context) map[string]interface{} {
-		ws.Lock()
-		defer ws.Unlock()
-		resp := api.RespPacking(len(ws.TxHashMap), errcode.SUCCESS)
+		ms.Lock()
+		defer ms.Unlock()
+		resp := api.RespPacking(len(ms.TxHashMap), errcode.SUCCESS)
 		return resp
 	}
 
@@ -151,7 +109,7 @@ func (ws *WsServer) registryMethod() {
 	}
 
 	getsessioncount := func(s api.Serverer, cmd map[string]interface{}, ctx context.Context) map[string]interface{} {
-		return api.RespPacking(ws.SessionList.GetSessionCount(), errcode.SUCCESS)
+		return api.RespPacking(ms.SessionList.GetSessionCount(), errcode.SUCCESS)
 	}
 
 	setClient := func(s api.Serverer, cmd map[string]interface{}, ctx context.Context) map[string]interface{} {
@@ -191,7 +149,7 @@ func (ws *WsServer) registryMethod() {
 		}
 
 		if wsAddr != localAddr {
-			return api.RespPacking(api.NodeInfo(wsAddr, rpcAddr, pubkey, id), errcode.WRONG_NODE)
+			return api.RespPacking(api.NodeInfo(wsAddr, rpcAddr, pubkey, id, ""), errcode.WRONG_NODE)
 		}
 
 		// client auth
@@ -227,7 +185,7 @@ func (ws *WsServer) registryMethod() {
 				go func() {
 					log.Warning("Client signature is not right, close its conneciton now")
 					time.Sleep(3 * time.Second)       // sleep several second, let response reach client
-					ws.SessionList.CloseSession(sess) // close this session
+					ms.SessionList.CloseSession(sess) // close this session
 				}()
 				return api.RespPacking(nil, errcode.INVALID_SIGNATURE)
 			}
@@ -236,7 +194,7 @@ func (ws *WsServer) registryMethod() {
 		}
 
 		newSessionID := hex.EncodeToString(clientID)
-		session, err := ws.SessionList.ChangeSessionToClient(cmd["Userid"].(string), newSessionID)
+		session, err := ms.SessionList.ChangeSessionToClient(cmd["Userid"].(string), newSessionID)
 		if err != nil {
 			log.Error("Change session id error: ", err)
 			return api.RespPacking(nil, errcode.INTERNAL_ERROR)
@@ -244,9 +202,9 @@ func (ws *WsServer) registryMethod() {
 		session.SetClient(clientID, pubKey, &addrStr, isTlsClient)
 
 		go func() {
-			messages := ws.messageBuffer.PopMessages(clientID)
+			messages := ms.messageBuffer.PopMessages(clientID)
 			for _, message := range messages {
-				ws.sendInboundRelayMessage(message, true)
+				ms.sendInboundRelayMessage(message, true)
 			}
 		}()
 
@@ -260,7 +218,7 @@ func (ws *WsServer) registryMethod() {
 		}
 
 		res := make(map[string]interface{})
-		res["node"] = api.NodeInfo(wsAddr, rpcAddr, pubkey, id)
+		res["node"] = api.NodeInfo(wsAddr, rpcAddr, pubkey, id, "")
 		res["sigChainBlockHash"] = hex.EncodeToString(sigChainBlockHash.ToArray())
 
 		return api.RespPacking(res, errcode.SUCCESS)
@@ -279,101 +237,10 @@ func (ws *WsServer) registryMethod() {
 		}
 	}
 
-	ws.ActionMap = actionMap
-}
-
-func (ws *WsServer) Stop() {
-	if ws.server != nil {
-		ws.server.Shutdown(context.Background())
-		log.Error("Close websocket ")
-	}
-}
-
-// websocketHandler
-func (ws *WsServer) websocketHandler(w http.ResponseWriter, r *http.Request) {
-	host, _, err := net.SplitHostPort(r.RemoteAddr)
-	if err == nil {
-		limiter := ratelimiter.GetLimiter("ws:"+host, config.Parameters.WsIPRateLimit, int(config.Parameters.WsIPRateBurst))
-		if !limiter.Allow() {
-			log.Infof("Ws connection limit of %s reached", host)
-			w.WriteHeader(http.StatusTooManyRequests)
-			return
-		}
-	}
-
-	wsConn, err := ws.Upgrader.Upgrade(w, r, nil)
-	if err != nil {
-		log.Error("websocket Upgrader: ", err)
-		return
-	}
-	defer wsConn.Close()
-
-	sess, err := ws.SessionList.NewSession(wsConn)
-	if err != nil {
-		log.Error("websocket NewSession:", err)
-		return
-	}
-
-	defer func() {
-		ws.deleteTxHashs(sess.GetSessionId())
-		ws.SessionList.CloseSession(sess)
-		if err := recover(); err != nil {
-			log.Error("websocket recover:", err)
-		}
-	}()
-
-	wsConn.SetReadLimit(maxMessageSize)
-	wsConn.SetReadDeadline(time.Now().Add(pongTimeout))
-	wsConn.SetPongHandler(func(string) error {
-		wsConn.SetReadDeadline(time.Now().Add(pongTimeout))
-		sess.UpdateLastReadTime()
-		return nil
-	})
-
-	// client auth
-	err = ws.sendClientAuthChallenge(sess)
-	if err != nil {
-		log.Error("send client auth challenge: ", err)
-		return
-	}
-
-	done := make(chan struct{})
-	defer close(done)
-	go func() {
-		ticker := time.NewTicker(pingInterval)
-		defer ticker.Stop()
-		var err error
-		for {
-			select {
-			case <-ticker.C:
-				err = sess.Ping()
-				if err != nil {
-					return
-				}
-			case <-done:
-				return
-			}
-		}
-	}()
-
-	for {
-		messageType, bysMsg, err := wsConn.ReadMessage()
-		if err != nil {
-			log.Debugf("websocket read message error: %v", err)
-			break
-		}
-
-		wsConn.SetReadDeadline(time.Now().Add(pongTimeout))
-		sess.UpdateLastReadTime()
-
-		err = ws.OnDataHandle(sess, messageType, bysMsg, r)
-		if err != nil {
-			log.Error(err)
-		}
-	}
+	ms.ActionMap = actionMap
 }
 
-func (ws *WsServer) IsValidMsg(reqMsg map[string]interface{}) bool {
+func (ms *MsgServer) IsValidMsg(reqMsg map[string]interface{}) bool {
 	if _, ok := reqMsg["Hash"].(string); !ok && reqMsg["Hash"] != nil {
 		return false
 	}
@@ -386,7 +253,7 @@ func (ws *WsServer) IsValidMsg(reqMsg map[string]interface{}) bool {
 	return true
 }
 
-func (ws *WsServer) OnDataHandle(curSession *session.Session, messageType int, bysMsg []byte, r *http.Request) error {
+func (ms *MsgServer) OnDataHandle(curSession *session.Session, messageType int, bysMsg []byte, httpr *http.Request) error {
 	if messageType == websocket.BinaryMessage {
 		msg := &pb.ClientMessage{}
 		err := proto.Unmarshal(bysMsg, msg)
@@ -422,14 +289,14 @@ func (ws *WsServer) OnDataHandle(curSession *session.Session, messageType int, b
 			if err != nil {
 				return fmt.Errorf("Unmarshal outbound message error: %v", err)
 			}
-			ws.sendOutboundRelayMessage(curSession.GetAddrStr(), outboundMsg)
+			ms.sendOutboundRelayMessage(curSession.GetAddrStr(), outboundMsg)
 		case pb.ClientMessageType_RECEIPT:
 			receipt := &pb.Receipt{}
 			err = proto.Unmarshal(b, receipt)
 			if err != nil {
 				return fmt.Errorf("Unmarshal receipt error: %v", err)
 			}
-			err = ws.handleReceipt(receipt)
+			err = ms.handleReceipt(receipt)
 			if err != nil {
 				return fmt.Errorf("Handle receipt error: %v", err)
 			}
@@ -444,24 +311,24 @@ func (ws *WsServer) OnDataHandle(curSession *session.Session, messageType int, b
 
 	if err := json.Unmarshal(bysMsg, &req); err != nil {
 		resp := api.ResponsePack(errcode.ILLEGAL_DATAFORMAT)
-		ws.respondToSession(curSession, resp)
+		ms.respondToSession(curSession, resp)
 		return fmt.Errorf("websocket OnDataHandle: %v", err)
 	}
 	actionName, ok := req["Action"].(string)
 	if !ok {
 		resp := api.ResponsePack(errcode.INVALID_METHOD)
-		ws.respondToSession(curSession, resp)
+		ms.respondToSession(curSession, resp)
 		return nil
 	}
-	action, ok := ws.ActionMap[actionName]
+	action, ok := ms.ActionMap[actionName]
 	if !ok {
 		resp := api.ResponsePack(errcode.INVALID_METHOD)
-		ws.respondToSession(curSession, resp)
+		ms.respondToSession(curSession, resp)
 		return nil
 	}
-	if !ws.IsValidMsg(req) {
+	if !ms.IsValidMsg(req) {
 		resp := api.ResponsePack(errcode.INVALID_PARAMS)
-		ws.respondToSession(curSession, resp)
+		ms.respondToSession(curSession, resp)
 		return nil
 	}
 	if height, ok := req["Height"].(float64); ok {
@@ -471,39 +338,45 @@ func (ws *WsServer) OnDataHandle(curSession *session.Session, messageType int, b
 		req["Raw"] = strconv.FormatInt(int64(raw), 10)
 	}
 	req["Userid"] = curSession.GetSessionId()
-	req["IsTls"] = r.TLS != nil
+	ctx := context.Background()
+	if httpr != nil {
+		req["IsTls"] = httpr.TLS != nil
+		ctx = httpr.Context()
+	} else {
+		req["IsTls"] = false
+	}
 	req["session"] = curSession
-	ret := action.handler(ws, req, r.Context())
+	ret := action.handler(ms, req, ctx)
 	resp := api.ResponsePack(ret["error"].(errcode.ErrCode))
 	resp["Action"] = actionName
 	resp["Result"] = ret["resultOrData"]
 	if txHash, ok := resp["Result"].(string); ok && action.pushFlag {
-		ws.Lock()
-		defer ws.Unlock()
-		ws.TxHashMap[txHash] = curSession.GetSessionId()
+		ms.Lock()
+		defer ms.Unlock()
+		ms.TxHashMap[txHash] = curSession.GetSessionId()
 	}
-	ws.respondToSession(curSession, resp)
+	ms.respondToSession(curSession, resp)
 
 	return nil
 }
 
-func (ws *WsServer) SetTxHashMap(txhash string, sessionid string) {
-	ws.Lock()
-	defer ws.Unlock()
-	ws.TxHashMap[txhash] = sessionid
+func (ms *MsgServer) SetTxHashMap(txhash string, sessionid string) {
+	ms.Lock()
+	defer ms.Unlock()
+	ms.TxHashMap[txhash] = sessionid
 }
 
-func (ws *WsServer) deleteTxHashs(sSessionId string) {
-	ws.Lock()
-	defer ws.Unlock()
-	for k, v := range ws.TxHashMap {
+func (ms *MsgServer) deleteTxHashs(sSessionId string) {
+	ms.Lock()
+	defer ms.Unlock()
+	for k, v := range ms.TxHashMap {
 		if v == sSessionId {
-			delete(ws.TxHashMap, k)
+			delete(ms.TxHashMap, k)
 		}
 	}
 }
 
-func (ws *WsServer) respondToSession(session *session.Session, resp map[string]interface{}) error {
+func (ms *MsgServer) respondToSession(session *session.Session, resp map[string]interface{}) error {
 	resp["Desc"] = errcode.ErrMessage[resp["Error"].(errcode.ErrCode)]
 	data, err := json.Marshal(resp)
 	if err != nil {
@@ -514,46 +387,46 @@ func (ws *WsServer) respondToSession(session *session.Session, resp map[string]i
 	return err
 }
 
-func (ws *WsServer) respondToId(sSessionId string, resp map[string]interface{}) {
-	sessions := ws.SessionList.GetSessionsById(sSessionId)
+func (ms *MsgServer) respondToId(sSessionId string, resp map[string]interface{}) {
+	sessions := ms.SessionList.GetSessionsById(sSessionId)
 	if sessions == nil {
 		log.Error("websocket sessionId Not Exist: " + sSessionId)
 		return
 	}
 	for _, session := range sessions {
-		ws.respondToSession(session, resp)
+		ms.respondToSession(session, resp)
 	}
 }
 
-func (ws *WsServer) PushTxResult(txHashStr string, resp map[string]interface{}) {
-	ws.Lock()
-	defer ws.Unlock()
-	sSessionId := ws.TxHashMap[txHashStr]
-	delete(ws.TxHashMap, txHashStr)
+func (ms *MsgServer) PushTxResult(txHashStr string, resp map[string]interface{}) {
+	ms.Lock()
+	defer ms.Unlock()
+	sSessionId := ms.TxHashMap[txHashStr]
+	delete(ms.TxHashMap, txHashStr)
 	if len(sSessionId) > 0 {
-		ws.respondToId(sSessionId, resp)
+		ms.respondToId(sSessionId, resp)
 	}
-	ws.PushResult(resp)
+	ms.PushResult(resp)
 }
 
-func (ws *WsServer) PushResult(resp map[string]interface{}) {
+func (ms *MsgServer) PushResult(resp map[string]interface{}) {
 	resp["Desc"] = errcode.ErrMessage[resp["Error"].(errcode.ErrCode)]
 	data, err := json.Marshal(resp)
 	if err != nil {
 		log.Error("Websocket PushResult:", err)
 		return
 	}
-	ws.Broadcast(data)
+	ms.Broadcast(data)
 }
 
-func (ws *WsServer) Broadcast(data []byte) error {
-	ws.SessionList.ForEachSession(func(s *session.Session) {
+func (ms *MsgServer) Broadcast(data []byte) error {
+	ms.SessionList.ForEachSession(func(s *session.Session) {
 		s.SendText(data)
 	})
 	return nil
 }
 
-func (ws *WsServer) initTlsListen() (net.Listener, error) {
+func (ms *MsgServer) initTlsListen() (net.Listener, error) {
 	tlsConfig := &tls.Config{
 		GetCertificate: api.GetWssCertificate,
 	}
@@ -566,23 +439,23 @@ func (ws *WsServer) initTlsListen() (net.Listener, error) {
 	return listener, nil
 }
 
-func (ws *WsServer) GetClientsById(cliendID []byte) []*session.Session {
-	sessions := ws.SessionList.GetSessionsById(hex.EncodeToString(cliendID))
+func (ms *MsgServer) GetClientsById(cliendID []byte) []*session.Session {
+	sessions := ms.SessionList.GetSessionsById(hex.EncodeToString(cliendID))
 	return sessions
 }
 
-func (ws *WsServer) GetNetNode() node.ILocalNode {
-	return ws.localNode
+func (ms *MsgServer) GetNetNode() node.ILocalNode {
+	return ms.localNode
 }
 
-func (ws *WsServer) NotifyWrongClients() {
-	ws.SessionList.ForEachClient(func(client *session.Session) {
+func (ms *MsgServer) NotifyWrongClients() {
+	ms.SessionList.ForEachClient(func(client *session.Session) {
 		clientID := client.GetID()
 		if clientID == nil {
 			return
 		}
 
-		localNode := ws.GetNetNode()
+		localNode := ms.GetNetNode()
 
 		var wsAddr, rpcAddr, localAddr string
 		var pubkey, id []byte
@@ -602,29 +475,29 @@ func (ws *WsServer) NotifyWrongClients() {
 
 		if wsAddr != localAddr {
 			resp := api.ResponsePack(errcode.WRONG_NODE)
-			resp["Result"] = api.NodeInfo(wsAddr, rpcAddr, pubkey, id)
-			ws.respondToSession(client, resp)
+			resp["Result"] = api.NodeInfo(wsAddr, rpcAddr, pubkey, id, "")
+			ms.respondToSession(client, resp)
 		}
 	})
 }
 
-func (ws *WsServer) startCheckingWrongClients() {
+func (ms *MsgServer) startCheckingWrongClients() {
 	for {
 		time.Sleep(checkWrongClientsInterval)
-		ws.NotifyWrongClients()
+		ms.NotifyWrongClients()
 	}
 }
 
-func (ws *WsServer) sendInboundRelayMessageToClient(v interface{}) {
+func (ms *MsgServer) sendInboundRelayMessageToClient(v interface{}) {
 	if msg, ok := v.(*pb.Relay); ok {
-		ws.sendInboundRelayMessage(msg, true)
+		ms.sendInboundRelayMessage(msg, true)
 	} else {
 		log.Error("Decode relay message failed")
 	}
 }
 
 // client auth, generate challenge
-func (ws *WsServer) sendClientAuthChallenge(sess *session.Session) error {
+func (ms *MsgServer) sendClientAuthChallenge(sess *session.Session) error {
 	resp := api.ResponsePack(errcode.SUCCESS)
 	resp["Action"] = "authChallenge"
 
@@ -633,6 +506,71 @@ func (ws *WsServer) sendClientAuthChallenge(sess *session.Session) error {
 	resp["Challenge"] = hex.EncodeToString(challenge)
 	sess.Challenge = challenge // save this challenge for verifying later.
 
-	err := ws.respondToSession(sess, resp)
+	err := ms.respondToSession(sess, resp)
 	return err
 }
+
+func (ms *MsgServer) newConnection(conn session.Conn, r *http.Request) {
+	sess, err := ms.SessionList.NewSession(conn)
+	if err != nil {
+		log.Error("websocket NewSession:", err)
+		return
+	}
+
+	defer func() {
+		ms.deleteTxHashs(sess.GetSessionId())
+		ms.SessionList.CloseSession(sess)
+		if err := recover(); err != nil {
+			log.Error("websocket recover:", err)
+		}
+	}()
+
+	conn.SetReadLimit(maxMessageSize)
+	conn.SetReadDeadline(time.Now().Add(pongTimeout))
+	conn.SetPongHandler(func(string) error {
+		conn.SetReadDeadline(time.Now().Add(pongTimeout))
+		sess.UpdateLastReadTime()
+		return nil
+	})
+
+	// client auth
+	err = ms.sendClientAuthChallenge(sess)
+	if err != nil {
+		log.Error("send client auth challenge: ", err)
+		return
+	}
+
+	done := make(chan struct{})
+	defer close(done)
+	go func() {
+		ticker := time.NewTicker(pingInterval)
+		defer ticker.Stop()
+		var err error
+		for {
+			select {
+			case <-ticker.C:
+				err = sess.Ping()
+				if err != nil {
+					return
+				}
+			case <-done:
+				return
+			}
+		}
+	}()
+
+	for {
+		messageType, bysMsg, err := conn.ReadMessage()
+		if err != nil {
+			log.Errorf("websocket read message error: %v", err)
+			break
+		}
+		conn.SetReadDeadline(time.Now().Add(pongTimeout))
+		sess.UpdateLastReadTime()
+
+		err = ms.OnDataHandle(sess, messageType, bysMsg, r)
+		if err != nil {
+			log.Error(err)
+		}
+	}
+}
diff --git a/api/websocket/server/wsserver.go b/api/websocket/server/wsserver.go
new file mode 100644
index 000000000..f91762165
--- /dev/null
+++ b/api/websocket/server/wsserver.go
@@ -0,0 +1,117 @@
+package server
+
+import (
+	"context"
+	"crypto/tls"
+	"net"
+	"net/http"
+	"strconv"
+	"time"
+
+	"github.com/gorilla/websocket"
+	api "github.com/nknorg/nkn/v2/api/common"
+	"github.com/nknorg/nkn/v2/api/ratelimiter"
+	"github.com/nknorg/nkn/v2/config"
+	"github.com/nknorg/nkn/v2/util/log"
+)
+
+// type conn interface {
+// 	Start(s *MsgServer, wssCertReady chan struct{}) error
+// }
+
+type wsServer struct {
+	s           *MsgServer
+	Upgrader    websocket.Upgrader
+	listener    net.Listener
+	tlsListener net.Listener
+	server      *http.Server
+	tlsServer   *http.Server
+}
+
+func (ws *wsServer) Start(s *MsgServer, wssCertReady chan struct{}) error {
+	ws.s = s
+	if config.Parameters.HttpWsPort == 0 {
+		log.Error("Not configure HttpWsPort port ")
+		return nil
+	}
+	ws.Upgrader.CheckOrigin = func(r *http.Request) bool {
+		return true
+	}
+
+	var err error
+
+	ws.listener, err = net.Listen("tcp", ":"+strconv.Itoa(int(config.Parameters.HttpWsPort)))
+	if err != nil {
+		log.Error("net.Listen: ", err.Error())
+		return err
+	}
+
+	ws.server = &http.Server{Handler: http.HandlerFunc(ws.websocketHandler)}
+	go ws.server.Serve(ws.listener)
+
+	go func(wssCertReady chan struct{}) {
+		if wssCertReady == nil {
+			return
+		}
+		for {
+			select {
+			case <-wssCertReady:
+				log.Info("wss cert received")
+				ws.tlsListener, err = ws.initTlsListen()
+				if err != nil {
+					log.Error("Https Cert: ", err.Error())
+				}
+				err = ws.server.Serve(ws.tlsListener)
+				if err != nil {
+					log.Error(err)
+				}
+				return
+			case <-time.After(300 * time.Second):
+				log.Info("wss server is unavailable yet")
+			}
+		}
+	}(wssCertReady)
+
+	return nil
+}
+
+func (ws *wsServer) websocketHandler(w http.ResponseWriter, r *http.Request) {
+	host, _, err := net.SplitHostPort(r.RemoteAddr)
+	if err == nil {
+		limiter := ratelimiter.GetLimiter("ws:"+host, config.Parameters.WsIPRateLimit, int(config.Parameters.WsIPRateBurst))
+		if !limiter.Allow() {
+			log.Infof("Ws connection limit of %s reached", host)
+			w.WriteHeader(http.StatusTooManyRequests)
+			return
+		}
+	}
+
+	wsServer, err := ws.Upgrader.Upgrade(w, r, nil)
+	if err != nil {
+		log.Error("websocket Upgrader: ", err)
+		return
+	}
+	defer wsServer.Close()
+
+	ws.s.newConnection(wsServer, r)
+}
+
+func (ws *wsServer) initTlsListen() (net.Listener, error) {
+	tlsConfig := &tls.Config{
+		GetCertificate: api.GetWssCertificate,
+	}
+
+	listener, err := tls.Listen("tcp", ":"+strconv.Itoa(int(config.Parameters.HttpWssPort)), tlsConfig)
+	if err != nil {
+		log.Error(err)
+		return nil, err
+	}
+	return listener, nil
+}
+
+func (ws *wsServer) Stop() {
+	if ws.server != nil {
+		ws.server.Shutdown(context.Background())
+		log.Error("Close websocket ")
+	}
+}
diff --git a/api/websocket/session/session.go b/api/websocket/session/session.go
index 5435ccfe5..a9d152219 100644
--- a/api/websocket/session/session.go
+++ b/api/websocket/session/session.go
@@ -13,6 +13,17 @@ const (
 	writeTimeout = 10 * time.Second
 )
 
+type Conn interface {
+	SetReadLimit(int64)
+	SetReadDeadline(t time.Time) error
+	SetWriteDeadline(t time.Time) error
+	WriteMessage(messageType int, data []byte) (err error)
+	WriteJSON(v interface{}) error
+	ReadMessage() (messageType int, data []byte, err error)
+	SetPongHandler(func(string) error)
+	Close() error
+}
+
 type Session struct {
 	sync.RWMutex
 	sessionID     string
@@ -23,7 +34,7 @@ type Session struct {
 	lastReadTime  time.Time
 
 	wsLock sync.Mutex
-	ws     *websocket.Conn
+	ws     Conn
 
 	Challenge   []byte    // client auth, authorization challenge
 	connectTime time.Time // The time which the session is established.
@@ -33,7 +44,7 @@ func (s *Session) GetSessionId() string {
 	return s.sessionID
 }
 
-func newSession(wsConn *websocket.Conn) (session *Session, err error) {
+func newSession(wsConn Conn) (session *Session, err error) {
 	sessionID := uuid.NewUUID().String()
 	session = &Session{
 		ws:           wsConn,
diff --git a/api/websocket/session/sessionlist.go b/api/websocket/session/sessionlist.go
index a664671d4..51ac6f81b 100644
--- a/api/websocket/session/sessionlist.go
+++ b/api/websocket/session/sessionlist.go
@@ -3,8 +3,6 @@ package session
 import (
 	"errors"
 	"sync"
-
-	"github.com/gorilla/websocket"
 )
 
 type SessionList struct {
@@ -18,7 +16,7 @@ func NewSessionList() *SessionList {
 	}
 }
 
-func (sl *SessionList) NewSession(wsConn *websocket.Conn) (*Session, error) {
+func (sl *SessionList) NewSession(wsConn Conn) (*Session, error) {
 	session, err := newSession(wsConn)
 	if err != nil {
 		return nil, err
diff --git a/api/websocket/websocket.go b/api/websocket/websocket.go
index 891605410..f28745eb2 100644
--- a/api/websocket/websocket.go
+++ b/api/websocket/websocket.go
@@ -16,7 +16,7 @@ import (
 	"github.com/nknorg/nkn/v2/vault"
 )
 
-var ws *server.WsServer
+var ws *server.MsgServer
 
 var (
 	pushBlockFlag    bool = false
@@ -24,10 +24,10 @@ var (
 	pushBlockTxsFlag bool = false
 )
 
-func NewServer(localNode node.ILocalNode, w *vault.Wallet) *server.WsServer {
+func NewServer(localNode node.ILocalNode, w *vault.Wallet) *server.MsgServer {
 	//	common.SetNode(n)
 	event.Queue.Subscribe(event.NewBlockProduced, SendBlock2WSclient)
-	ws = server.InitWsServer(localNode, w)
+	ws = server.InitMsgServer(localNode, w)
 	return ws
 }
 
@@ -124,6 +124,6 @@ func PushSigChainBlockHash(v interface{}) {
 	}
 }
 
-func GetServer() *server.WsServer {
+func GetServer() *server.MsgServer {
 	return ws
 }
diff --git a/cmd/nknd/commands/root.go b/cmd/nknd/commands/root.go
index 36ed5f1fc..1c6f945be 100644
--- a/cmd/nknd/commands/root.go
+++ b/cmd/nknd/commands/root.go
@@ -100,6 +100,7 @@ func init() {
 	rootCmd.Flags().StringVar(&config.WebGuiListenAddress, "web-gui-listen-address", "", "web gui will listen this address (default: 127.0.0.1)")
 	rootCmd.Flags().BoolVar(&config.WebGuiCreateWallet, "web-gui-create-wallet", false, "web gui create/open wallet")
 	rootCmd.Flags().StringVar(&config.PasswordFile, "password-file", "", "read password from file, save password to file when --web-gui-create-wallet arguments be true and password file does not exist")
+	rootCmd.Flags().StringVar(&config.StunList, "stun", "", "Webrtc stun servers, multiple servers should be split by comma")
 
 	rootCmd.Flags().MarkHidden("passwd")
 }
diff --git a/config.local.json b/config.local.json
index 562b3a41a..3500ac222 100644
--- a/config.local.json
+++ b/config.local.json
@@ -6,5 +6,10 @@
   "SeedList": [
     "http://127.0.0.1:30003"
   ],
+  "StunList": [
+    "stun:stun.l.google.com:19302",
+    "stun:stun.cloudflare.com:3478",
+    "stun:stunserver.stunprotocol.org:3478"
+  ],
   "GenesisBlockProposer": ""
 }
diff --git a/config.mainnet.json b/config.mainnet.json
index 2f3e2bdf5..8468c5ca6 100644
--- a/config.mainnet.json
+++ b/config.mainnet.json
@@ -46,5 +46,10 @@
     "http://mainnet-seed-0043.nkn.org:30003",
     "http://mainnet-seed-0044.nkn.org:30003"
   ],
+  "StunList": [
+    "stun:stun.l.google.com:19302",
+    "stun:stun.cloudflare.com:3478",
+    "stun:stunserver.stunprotocol.org:3478"
+  ],
   "GenesisBlockProposer": "a0309f8280ca86687a30ca86556113a253762e40eb884fc6063cad2b1ebd7de5"
 }
diff --git a/config.testnet.json b/config.testnet.json
index 92302ba9e..c1d6fa9be 100644
--- a/config.testnet.json
+++ b/config.testnet.json
@@ -7,6 +7,11 @@
     "http://devnet-seed-0003.nkn.org:30003",
     "http://devnet-seed-0004.nkn.org:30003"
   ],
+  "StunList": [
+    "stun:stun.l.google.com:19302",
+    "stun:stun.cloudflare.com:3478",
+    "stun:stunserver.stunprotocol.org:3478"
+  ],
   "GenesisBlockProposer": "0149c42944eea91f094c16538eff0449d4d1e236f31c8c706b2e40e98402984c",
   "BeneficiaryAddr": ""
 }
diff --git a/config/config.go b/config/config.go
index 405398587..e184f21e2 100644
--- a/config/config.go
+++ b/config/config.go
@@ -249,6 +249,7 @@ var (
 	WalletFile                   string
 	BeneficiaryAddr              string
 	SeedList                     string
+	StunList                     string
 	GenesisBlockProposer         string
 	AllowEmptyBeneficiaryAddress bool
 	WebGuiListenAddress          string
@@ -332,6 +333,7 @@ var (
 type Configuration struct {
 	Version                      int           `json:"Version"`
 	SeedList                     []string      `json:"SeedList"`
+	StunList                     []string      `json:"StunList"`
 	HttpWssDomain                string        `json:"HttpWssDomain"`
 	HttpWssCert                  string        `json:"HttpWssCert"`
 	HttpWssKey                   string        `json:"HttpWssKey"`
@@ -449,6 +451,10 @@ func Init() error {
 		Parameters.SeedList = strings.Split(SeedList, ",")
 	}
 
+	if len(StunList) > 0 {
+		Parameters.StunList = strings.Split(StunList, ",")
+	}
+
 	if len(GenesisBlockProposer) > 0 {
 		Parameters.GenesisBlockProposer = GenesisBlockProposer
 	}
@@ -558,6 +564,10 @@ func (config *Configuration) verify() error {
 		return errors.New("seed list in config file should not be blank")
 	}
 
+	if len(config.StunList) == 0 {
+		return errors.New("stun list in config file should not be blank")
+	}
+
 	if config.NumTxnPerBlock > MaxNumTxnPerBlock {
 		return fmt.Errorf("NumTxnPerBlock cannot be greater than %d", MaxNumTxnPerBlock)
 	}
diff --git a/go.mod b/go.mod
index 168390e10..d46ffb89a 100644
--- a/go.mod
+++ b/go.mod
@@ -21,15 +21,17 @@ require (
 	github.com/rdegges/go-ipify v0.0.0-20150526035502-2d94a6a86c40
 	github.com/spf13/cobra v1.4.0
 	github.com/spf13/pflag v1.0.5
-	github.com/stretchr/testify v1.8.3
+	github.com/stretchr/testify v1.9.0
 	github.com/syndtr/goleveldb v1.0.1-0.20210305035536-64b5b1c73954
 	github.com/wk8/go-ordered-map v1.0.0
-	golang.org/x/crypto v0.17.0
-	golang.org/x/sys v0.15.0 // indirect
+	golang.org/x/crypto v0.21.0
+	golang.org/x/sys v0.18.0 // indirect
 	golang.org/x/time v0.0.0-20201208040808-7e3f01d25324
 	google.golang.org/protobuf v1.30.0
 )
 
+require github.com/pion/webrtc/v4 v4.0.0-beta.17
+
 require (
 	github.com/bytedance/sonic v1.9.1 // indirect
 	github.com/cenkalti/backoff/v4 v4.0.0 // indirect
@@ -43,7 +45,7 @@ require (
 	github.com/goccy/go-json v0.10.2 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/snappy v0.0.1 // indirect
-	github.com/google/uuid v1.1.1 // indirect
+	github.com/google/uuid v1.6.0 // indirect
 	github.com/gorilla/context v1.1.1 // indirect
 	github.com/gorilla/sessions v1.1.3 // indirect
 	github.com/hashicorp/yamux v0.0.0-20181012175058-2f1d1f20f75d // indirect
@@ -65,6 +67,22 @@ require (
 	github.com/nknorg/go-nat v1.0.1 // indirect
 	github.com/op/go-logging v0.0.0-20160315200505-970db520ece7 // indirect
 	github.com/pelletier/go-toml/v2 v2.0.8 // indirect
+	github.com/pion/datachannel v1.5.6 // indirect
+	github.com/pion/dtls/v2 v2.2.10 // indirect
+	github.com/pion/ice/v3 v3.0.6 // indirect
+	github.com/pion/interceptor v0.1.29 // indirect
+	github.com/pion/logging v0.2.2 // indirect
+	github.com/pion/mdns/v2 v2.0.7 // indirect
+	github.com/pion/randutil v0.1.0 // indirect
+	github.com/pion/rtcp v1.2.14 // indirect
+	github.com/pion/rtp v1.8.5 // indirect
+	github.com/pion/sctp v1.8.16 // indirect
+	github.com/pion/sdp/v3 v3.0.9 // indirect
+	github.com/pion/srtp/v3 v3.0.1 // indirect
+	github.com/pion/stun/v2 v2.0.0 // indirect
+	github.com/pion/transport/v2 v2.2.4 // indirect
+	github.com/pion/transport/v3 v3.0.2 // indirect
+	github.com/pion/turn/v3 v3.0.2 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/templexxx/cpufeat v0.0.0-20180724012125-cef66df7f161 // indirect
@@ -77,8 +95,8 @@ require (
 	gitlab.com/NebulousLabs/fastrand v0.0.0-20181126182046-603482d69e40 // indirect
 	gitlab.com/NebulousLabs/go-upnp v0.0.0-20181011194642-3a71999ed0d3 // indirect
 	golang.org/x/arch v0.3.0 // indirect
-	golang.org/x/net v0.17.0 // indirect
-	golang.org/x/term v0.15.0 // indirect
+	golang.org/x/net v0.22.0 // indirect
+	golang.org/x/term v0.18.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
 	gopkg.in/square/go-jose.v2 v2.3.1 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
diff --git a/go.sum b/go.sum
index 9a97083b5..94208060a 100644
--- a/go.sum
+++ b/go.sum
@@ -173,8 +173,9 @@ github.com/google/pprof v0.0.0-20200212024743-f11f1df84d12/go.mod h1:ZgVRPoUq/hf
 github.com/google/pprof v0.0.0-20200229191704-1ebb73c60ed3/go.mod h1:ZgVRPoUq/hfqzAqh7sHMqb3I9Rq5C59dIz2SbBwJ4eM=
 github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
 github.com/google/uuid v1.0.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
-github.com/google/uuid v1.1.1 h1:Gkbcsh/GbpXz7lPftLA3P6TYMwjCLYm83jiFQZF/3gY=
 github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
+github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+vpHVxEJEs9eg=
 github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5mhpdKc/us6bOk=
 github.com/gophercloud/gophercloud v0.3.0/go.mod h1:vxM41WHh5uqHVBMZHzuwNOHh8XEoIEcSTewFxm1c5g8=
@@ -300,12 +301,12 @@ github.com/olekukonko/tablewriter v0.0.1/go.mod h1:vsDQFd/mU46D+Z4whnwzcISnGGzXW
 github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/ginkgo v1.7.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/ginkgo v1.12.1/go.mod h1:zj2OWP4+oCPe1qIXoGWkgMRwljMUYCdkwsT2108oapk=
-github.com/onsi/ginkgo v1.14.0 h1:2mOpI4JVVPBN+WQRa0WKH2eXR+Ey+uK4n7Zj0aYpIQA=
 github.com/onsi/ginkgo v1.14.0/go.mod h1:iSB4RoI2tjJc9BBv4NKIKWKya62Rps+oPG/Lv9klQyY=
+github.com/onsi/ginkgo v1.16.5 h1:8xi0RTUf59SOSfEtZMvwTvXYMzG4gV23XVHOZiXNtnE=
 github.com/onsi/gomega v1.4.3/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
 github.com/onsi/gomega v1.7.1/go.mod h1:XdKZgCCFLUoM/7CFJVPcG8C1xQ1AJ0vpAezJrB7JYyY=
-github.com/onsi/gomega v1.10.1 h1:o0+MgICZLuZ7xjH7Vx6zS/zcu93/BEp1VwkIW1mEXCE=
 github.com/onsi/gomega v1.10.1/go.mod h1:iN09h71vgCQne3DLsj+A5owkum+a2tYe+TOCB1ybHNo=
+github.com/onsi/gomega v1.17.0 h1:9Luw4uT5HTjHTN8+aNcSThgH1vdXnmdJ8xIfZ4wyTRE=
 github.com/op/go-logging v0.0.0-20160315200505-970db520ece7 h1:lDH9UUVJtmYCjyT0CI4q8xvlXPxeZ0gYCVvWbmPlp88=
 github.com/op/go-logging v0.0.0-20160315200505-970db520ece7/go.mod h1:HzydrMdWErDVzsI23lYNej1Htcns9BCg93Dk0bBINWk=
 github.com/openzipkin/zipkin-go v0.1.6/go.mod h1:QgAqvLzwWbR/WpD4A3cGpPtJrZXNIiJc5AZX7/PBEpw=
@@ -320,6 +321,46 @@ github.com/pborman/uuid v1.2.0/go.mod h1:X/NO0urCmaxf9VXbdlT7C2Yzkj2IKimNn4k+gtP
 github.com/pelletier/go-toml/v2 v2.0.8 h1:0ctb6s9mE31h0/lhu+J6OPmVeDxJn+kYnJc2jZR9tGQ=
 github.com/pelletier/go-toml/v2 v2.0.8/go.mod h1:vuYfssBdrU2XDZ9bYydBu6t+6a6PYNcZljzZR9VXg+4=
 github.com/pierrec/lz4 v2.0.5+incompatible/go.mod h1:pdkljMzZIN41W+lC3N2tnIh5sFi+IEE17M5jbnwPHcY=
+github.com/pion/datachannel v1.5.6 h1:1IxKJntfSlYkpUj8LlYRSWpYiTTC02nUrOE8T3DqGeg=
+github.com/pion/datachannel v1.5.6/go.mod h1:1eKT6Q85pRnr2mHiWHxJwO50SfZRtWHTsNIVb/NfGW4=
+github.com/pion/dtls/v2 v2.2.7/go.mod h1:8WiMkebSHFD0T+dIU+UeBaoV7kDhOW5oDCzZ7WZ/F9s=
+github.com/pion/dtls/v2 v2.2.10 h1:u2Axk+FyIR1VFTPurktB+1zoEPGIW3bmyj3LEFrXjAA=
+github.com/pion/dtls/v2 v2.2.10/go.mod h1:d9SYc9fch0CqK90mRk1dC7AkzzpwJj6u2GU3u+9pqFE=
+github.com/pion/ice/v3 v3.0.6 h1:UC5vZCMhmve7yv+Y6E5eTnRTl+t9LLtmeBYQ9038Zm8=
+github.com/pion/ice/v3 v3.0.6/go.mod h1:4eMTUKQEjC1fGQGB6qUzy2ux9Pc1v9EsO3hNaii+kXI=
+github.com/pion/interceptor v0.1.29 h1:39fsnlP1U8gw2JzOFWdfCU82vHvhW9o0rZnZF56wF+M=
+github.com/pion/interceptor v0.1.29/go.mod h1:ri+LGNjRUc5xUNtDEPzfdkmSqISixVTBF/z/Zms/6T4=
+github.com/pion/logging v0.2.2 h1:M9+AIj/+pxNsDfAT64+MAVgJO0rsyLnoJKCqf//DoeY=
+github.com/pion/logging v0.2.2/go.mod h1:k0/tDVsRCX2Mb2ZEmTqNa7CWsQPc+YYCB7Q+5pahoms=
+github.com/pion/mdns/v2 v2.0.7 h1:c9kM8ewCgjslaAmicYMFQIde2H9/lrZpjBkN8VwoVtM=
+github.com/pion/mdns/v2 v2.0.7/go.mod h1:vAdSYNAT0Jy3Ru0zl2YiW3Rm/fJCwIeM0nToenfOJKA=
+github.com/pion/randutil v0.1.0 h1:CFG1UdESneORglEsnimhUjf33Rwjubwj6xfiOXBa3mA=
+github.com/pion/randutil v0.1.0/go.mod h1:XcJrSMMbbMRhASFVOlj/5hQial/Y8oH/HVo7TBZq+j8=
+github.com/pion/rtcp v1.2.12/go.mod h1:sn6qjxvnwyAkkPzPULIbVqSKI5Dv54Rv7VG0kNxh9L4=
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@@ -368,6 +409,7 @@ github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
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@@ -378,8 +420,10 @@ github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
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@@ -409,6 +453,7 @@ github.com/xtaci/smux v1.2.11 h1:QI4M2HgkkpsVU3Bfcmyx10qURBEeHfKi7xDhGEORfu0=
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@@ -435,8 +480,13 @@ golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8U
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@@ -467,6 +517,8 @@ golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzB
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@@ -497,8 +549,16 @@ golang.org/x/net v0.0.0-20200301022130-244492dfa37a/go.mod h1:z5CRVTTTmAJ677TzLL
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@@ -510,8 +570,10 @@ golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJ
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@@ -549,17 +611,39 @@ golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7w
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 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
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 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
@@ -603,6 +687,8 @@ golang.org/x/tools v0.0.0-20200224181240-023911ca70b2/go.mod h1:TB2adYChydJhpapK
 golang.org/x/tools v0.0.0-20200304193943-95d2e580d8eb/go.mod h1:o4KQGtdN14AW+yjsvvwRTJJuXz8XRtIHtEnmAXLyFUw=
 golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
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 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=
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@@ -662,8 +748,9 @@ google.golang.org/protobuf v1.30.0 h1:kPPoIgf3TsEvrm0PFe15JQ+570QVxYzEvvHqChK+cn
 google.golang.org/protobuf v1.30.0/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 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
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