1.加了TunnelPair

2.只注销一次

model/tunnel.go

@@ -18,6 +18,7 @@ type Tunnel struct {
 	cipherDirection constant.Direction
 	regChan         chan interface{}
 	unregChan       chan interface{}
+	unregistered    bool
 }
 
 func NewTunnel(id string, src, dest net.Conn, cipherDirection constant.Direction) *Tunnel {
@@ -26,6 +27,7 @@ func NewTunnel(id string, src, dest net.Conn, cipherDirection constant.Direction
 		src:             src,
 		dest:            dest,
 		cipherDirection: cipherDirection,
+		unregistered:    false,
 	}
 }
 
@@ -73,9 +75,11 @@ func (this *Tunnel) receive(revCarrier *tscipher.Carrier) {
 	cipherDirection := this.cipherDirection
 	id := this.id
 	defer func() {
-		// log.Debug("tunnel id %s ends", id)
 		//注销
-		// this.unregChan <- this
+		if !this.unregistered { // 应该不存在异步问题
+			this.unregChan <- this
+			this.unregistered = true
+		}
 		if r := recover(); r != nil {
 			if src != nil {
 				src.Close()
@@ -110,7 +114,10 @@ func (this *Tunnel) send(sendCarrier *tscipher.Carrier) {
 	id := this.id
 	defer func() {
 		//注销
-		this.unregChan <- this
+		if !this.unregistered {
+			this.unregChan <- this
+			this.unregistered = true
+		}
 		if r := recover(); r != nil {
 			if src != nil {
 				src.Close()

model/tunnelpair.go

@@ -0,0 +1,35 @@
+package model
+
+type TunnelPair struct {
+	pair []*Tunnel
+}
+
+func NewTunnelPair(a *Tunnel, b *Tunnel) *TunnelPair {
+	r := new(TunnelPair)
+	r.pair = make([]*Tunnel, 2)
+	p := r.pair
+	p[0] = a
+	p[1] = b
+	return r
+}
+
+func (this *TunnelPair) Run() {
+	p := this.pair
+	for _, v := range p {
+		go v.Run()
+	}
+}
+
+func (this *TunnelPair) SetRegChan(reg chan interface{}) {
+	p := this.pair
+	for _, v := range p {
+		v.SetRegChan(reg)
+	}
+}
+
+func (this *TunnelPair) SetUnRegChan(unreg chan interface{}) {
+	p := this.pair
+	for _, v := range p {
+		v.SetUnRegChan(unreg)
+	}
+}