重构，用多态模式写数据发送和接收的代码。速度快了，可能和减少了判断有关。

model/tunnel.go

@@ -3,13 +3,15 @@ package model
 import (
 
 	// "fmt"
+	"net"
+	"time"
+
 	"github.com/TransX/cache"
+	"github.com/TransX/communicator"
 	"github.com/TransX/constant"
 	"github.com/TransX/log"
 	"github.com/TransX/tscipher"
 	"github.com/spf13/viper"
-	"net"
-	"time"
 )
 
 type Tunnel struct {
@@ -95,14 +97,18 @@ func (this *Tunnel) receive(revCarrier *tscipher.Carrier) {
 	defer this.onError()
 	var n int
 	var err error
+	var receiver communicator.Receiver
+	if cipherDirection != constant.RECEIVE {
+		// revCarrier.Cipher = nil
+		// n, err = tscipher.RowReceiveData(revCarrier)
+		receiver = communicator.NewDirectReceiver(revCarrier)
+	} else {
+		receiver = communicator.NewNormalReceiver(revCarrier)
+	}
+
 	for {
 		rTimer := time.Now() //receive timer
-		if cipherDirection != constant.RECEIVE {
-			revCarrier.Cipher = nil
-			n, err = tscipher.RowReceiveData(revCarrier)
-		} else {
-			n, err = tscipher.ReceiveData(revCarrier)
-		}
+		n, err = receiver.Receive()
 		log.Info("id %s time to receive %d", id, time.Since(rTimer)/1000)
 		if err != nil {
 			log.Panic("Read panic. Tunnel id: %s. Remote Add: %s Local: %s. Err:%s", id, src.RemoteAddr().String(), src.LocalAddr().String(), err.Error())
@@ -115,13 +121,17 @@ func (this *Tunnel) send(sendCarrier *tscipher.Carrier) {
 	dest := this.dest
 	cipherDirection := this.cipherDirection
 	id := this.id
+	var sender communicator.Sender
 	defer this.onError()
 	if cipherDirection != constant.SEND {
-		sendCarrier.Cipher = nil
+		// sendCarrier.Cipher = nil
+		sender = communicator.NewDirectSender(sendCarrier)
+	} else {
+		sender = communicator.NewNormalSender(sendCarrier)
 	}
 	for {
 		sTimer := time.Now() //send timer
-		n, err := tscipher.SendData(sendCarrier)
+		n, err := sender.Send()
 		log.Info("id %s time to send %d", id, time.Since(sTimer)/1000)
 		if err != nil {
 			log.Panic("Write panic. ID: %s, Err: %s, Remote Add: %s", id, err, dest.RemoteAddr().String())