use id to send

Signed-off-by: Chen Kai <281165273grape@gmail.com>

p2p/discover/portal_protocol.go

@@ -160,7 +160,9 @@ func DefaultPortalProtocolConfig() *PortalProtocolConfig {
 }
 
 type PortalProtocol struct {
-	table *Table
+	table         *Table
+	cachedIdsLock sync.Mutex
+	cachedIds     map[string]enode.ID
 
 	protocolId   string
 	protocolName string
@@ -200,6 +202,7 @@ func NewPortalProtocol(config *PortalProtocolConfig, protocolId string, privateK
 
 	protocolName := portalwire.NetworkNameMap[protocolId]
 	protocol := &PortalProtocol{
+		cachedIds:      make(map[string]enode.ID),
 		protocolId:     protocolId,
 		protocolName:   protocolName,
 		ListenAddr:     config.ListenAddr,
@@ -294,39 +297,25 @@ func (p *PortalProtocol) setupUDPListening() error {
 	var err error
 	p.packetRouter = utp.NewPacketRouter(
 		func(buf []byte, addr *net.UDPAddr) (int, error) {
-			nodes := p.table.Nodes()
+			p.Log.Info("will send to target data", "ip", addr.IP.To4().String(), "port", addr.Port, "bufLength", len(buf))
-			var target *enode.Node
-			for _, n := range nodes {
-				if addr.Port != n.UDP() {
-					continue
-				}
-				if addr.IP != nil && addr.IP.To4().String() == n.IP().To4().String() {
-					target = n
 
-					break
+			p.cachedIdsLock.Lock()
-				}
+			defer p.cachedIdsLock.Unlock()
-				if addr.IP == nil {
+			if id, ok := p.cachedIds[addr.String()]; ok {
-					nodeIp := n.IP().To4().String()
+				//_, err := p.DiscV5.TalkRequestToID(id, addr, string(portalwire.UTPNetwork), buf)
-					if nodeIp == "127.0.0.1" || nodeIp == "0.0.0.0" {
+				req := &v5wire.TalkRequest{Protocol: string(portalwire.UTPNetwork), Message: buf}
-						target = n
+				p.DiscV5.sendFromAnotherThread(id, addr, req)
-						break
+
-					}
+				return len(buf), err
-				}
+			} else {
+				p.Log.Warn("not found target node info", "ip", addr.IP.To4().String(), "port", addr.Port, "bufLength", len(buf))
+				return 0, fmt.Errorf("not found target node id")
 			}
-
-			if target == nil {
-				p.Log.Warn("not fount target node info", "ip", addr.IP.To4().String(), "port", addr.Port, "bufLength", len(buf))
-				return 0, fmt.Errorf("not found target node info")
-			}
-			p.Log.Trace("send to target data", "ip", addr.IP.To4().String(), "port", addr.Port, "bufLength", len(buf))
-			req := &v5wire.TalkRequest{Protocol: string(portalwire.UTPNetwork), Message: buf}
-			p.DiscV5.sendFromAnotherThread(target.ID(), addr, req)
-
-			return len(buf), err
 		})
 
 	ctx := context.Background()
 	var logger *zap.Logger
+
 	if p.Log.Enabled(ctx, log.LevelDebug) || p.Log.Enabled(ctx, log.LevelTrace) {
 		logger, err = zap.NewDevelopmentConfig().Build()
 	} else {
@@ -370,6 +359,23 @@ func (p *PortalProtocol) setupDiscV5AndTable() error {
 	return nil
 }
 
+func (p *PortalProtocol) putCacheNodeId(node *enode.Node) {
+	p.cachedIdsLock.Lock()
+	defer p.cachedIdsLock.Unlock()
+	addr := &net.UDPAddr{IP: node.IP(), Port: node.UDP()}
+	if _, ok := p.cachedIds[addr.String()]; !ok {
+		p.cachedIds[addr.String()] = node.ID()
+	}
+}
+
+func (p *PortalProtocol) putCacheId(id enode.ID, addr *net.UDPAddr) {
+	p.cachedIdsLock.Lock()
+	defer p.cachedIdsLock.Unlock()
+	if _, ok := p.cachedIds[addr.String()]; !ok {
+		p.cachedIds[addr.String()] = id
+	}
+}
+
 func (p *PortalProtocol) ping(node *enode.Node) (uint64, error) {
 	pong, err := p.pingInner(node)
 	if err != nil {
@@ -513,6 +519,9 @@ func (p *PortalProtocol) processOffer(target *enode.Node, resp []byte, request *
 		return nil, fmt.Errorf("invalid accept response")
 	}
 
+	p.Log.Info("will process Offer", "id", target.ID(), "ip", target.IP().To4().String(), "port", target.UDP())
+	p.putCacheNodeId(target)
+
 	accept := &portalwire.Accept{}
 	err = accept.UnmarshalSSZ(resp[1:])
 	if err != nil {
@@ -581,8 +590,8 @@ func (p *PortalProtocol) processOffer(target *enode.Node, resp []byte, request *
 				connctx, conncancel := context.WithTimeout(ctx, defaultUTPConnectTimeout)
 				laddr := p.utp.Addr().(*utp.Addr)
 				raddr := &utp.Addr{IP: target.IP(), Port: target.UDP()}
-				conn, err = utp.DialUTPOptions("utp", laddr, raddr, utp.WithContext(connctx), utp.WithSocketManager(p.utpSm), utp.WithConnId(uint32(connId)))
 				p.Log.Info("will connect to: ", "addr", raddr.String(), "connId", connId)
+				conn, err = utp.DialUTPOptions("utp", laddr, raddr, utp.WithContext(connctx), utp.WithSocketManager(p.utpSm), utp.WithConnId(uint32(connId)))
 				if err != nil {
 					conncancel()
 					p.Log.Error("failed to dial utp connection", "err", err)
@@ -636,6 +645,9 @@ func (p *PortalProtocol) processContent(target *enode.Node, resp []byte) (byte,
 		return 0xff, nil, fmt.Errorf("invalid content response")
 	}
 
+	p.Log.Info("will process content", "id", target.ID(), "ip", target.IP().To4().String(), "port", target.UDP())
+	p.putCacheNodeId(target)
+
 	switch resp[1] {
 	case portalwire.ContentRawSelector:
 		content := &portalwire.Content{}
@@ -660,8 +672,8 @@ func (p *PortalProtocol) processContent(target *enode.Node, resp []byte) (byte,
 		laddr := p.utp.Addr().(*utp.Addr)
 		raddr := &utp.Addr{IP: target.IP(), Port: target.UDP()}
 		connId := binary.BigEndian.Uint16(connIdMsg.Id[:])
-		conn, err := utp.DialUTPOptions("utp", laddr, raddr, utp.WithContext(connctx), utp.WithSocketManager(p.utpSm), utp.WithConnId(uint32(connId)))
 		p.Log.Info("will connect to: ", "addr", raddr.String(), "connId", connId)
+		conn, err := utp.DialUTPOptions("utp", laddr, raddr, utp.WithContext(connctx), utp.WithSocketManager(p.utpSm), utp.WithConnId(uint32(connId)))
 		if err != nil {
 			conncancel()
 			return 0xff, nil, err
@@ -787,16 +799,18 @@ func (p *PortalProtocol) handleUtpTalkRequest(id enode.ID, addr *net.UDPAddr, ms
 	if n := p.DiscV5.getNode(id); n != nil {
 		p.table.addSeenNode(wrapNode(n))
 	}
+
+	p.putCacheId(id, addr)
 	p.Log.Trace("receive utp data", "addr", addr, "msg-length", len(msg))
 	p.packetRouter.ReceiveMessage(msg, addr)
 	return []byte("")
 }
 
 func (p *PortalProtocol) handleTalkRequest(id enode.ID, addr *net.UDPAddr, msg []byte) []byte {
-	p.Log.Trace("handleTalkRequest", "id", id, "addr", addr)
 	if n := p.DiscV5.getNode(id); n != nil {
 		p.table.addSeenNode(wrapNode(n))
 	}
+	p.putCacheId(id, addr)
 
 	msgCode := msg[0]
 
@@ -961,6 +975,8 @@ func (p *PortalProtocol) handleFindContent(id enode.ID, addr *net.UDPAddr, reque
 		return nil, err
 	}
 
+	p.putCacheId(id, addr)
+
 	if errors.Is(err, ContentNotFound) {
 		closestNodes := p.findNodesCloseToContent(contentId, portalFindnodesResultLimit)
 		for i, n := range closestNodes {
@@ -1030,14 +1046,13 @@ func (p *PortalProtocol) handleFindContent(id enode.ID, addr *net.UDPAddr, reque
 				default:
 					ctx, cancel := context.WithTimeout(bctx, defaultUTPConnectTimeout)
 					var conn *utp.Conn
+					p.Log.Debug("will accept find content conn from: ", "source", addr, "connId", connId)
 					conn, err = p.utp.AcceptUTPContext(ctx, connIdSend)
-					p.Log.Info("will accept from: ", "source", addr, "connId", connId)
 					if err != nil {
-						p.Log.Error("failed to accept utp connection", "connId", connIdSend, "err", err)
+						p.Log.Error("failed to accept utp connection for handle find content", "connId", connIdSend, "err", err)
 						cancel()
 						return
 					}
-					p.Log.Info("")
 					cancel()
 
 					err = conn.SetWriteDeadline(time.Now().Add(defaultUTPWriteTimeout))
@@ -1138,6 +1153,8 @@ func (p *PortalProtocol) handleOffer(id enode.ID, addr *net.UDPAddr, request *po
 		}
 	}
 
+	p.putCacheId(id, addr)
+
 	idBuffer := make([]byte, 2)
 	if contentKeyBitlist.Count() != 0 {
 		connId := p.connIdGen.GenCid(id, false)
@@ -1151,10 +1168,10 @@ func (p *PortalProtocol) handleOffer(id enode.ID, addr *net.UDPAddr, request *po
 				default:
 					ctx, cancel := context.WithTimeout(bctx, defaultUTPConnectTimeout)
 					var conn *utp.Conn
+					p.Log.Debug("will accept offer conn from: ", "source", addr, "connId", connId)
 					conn, err = p.utp.AcceptUTPContext(ctx, connIdSend)
-					p.Log.Info("will accept from: ", "source", addr, "connId", connId)
 					if err != nil {
-						p.Log.Error("failed to accept utp connection", "connId", connIdSend, "err", err)
+						p.Log.Error("failed to accept utp connection for handle offer", "connId", connIdSend, "err", err)
 						cancel()
 						return
 					}