diff --git a/proxy/freedom/freedom.go b/proxy/freedom/freedom.go
index ec891c60b..db2a7273c 100644
--- a/proxy/freedom/freedom.go
+++ b/proxy/freedom/freedom.go
@@ -2,6 +2,7 @@ package freedom
 
 import (
 	"net"
+	"sync"
 
 	"github.com/v2ray/v2ray-core"
 	"github.com/v2ray/v2ray-core/common/log"
@@ -41,31 +42,32 @@ func (vconn *FreedomConnection) Start(ray core.OutboundRay) error {
 
 	input := ray.OutboundInput()
 	output := ray.OutboundOutput()
-	readFinish := make(chan bool)
-	writeFinish := make(chan bool)
+	var readMutex, writeMutex sync.Mutex
+	readMutex.Lock()
+	writeMutex.Lock()
 
-	go dumpInput(conn, input, writeFinish)
-	go dumpOutput(conn, output, readFinish)
+	go dumpInput(conn, input, writeMutex)
+	go dumpOutput(conn, output, readMutex)
 
 	go func() {
-		<-writeFinish
+		writeMutex.Lock()
 		if tcpConn, ok := conn.(*net.TCPConn); ok {
 			tcpConn.CloseWrite()
 		}
-		<-readFinish
+		readMutex.Lock()
 		conn.Close()
 	}()
 
 	return nil
 }
 
-func dumpInput(conn net.Conn, input <-chan []byte, finish chan<- bool) {
+func dumpInput(conn net.Conn, input <-chan []byte, finish sync.Mutex) {
 	v2net.ChanToWriter(conn, input)
-	close(finish)
+	finish.Unlock()
 }
 
-func dumpOutput(conn net.Conn, output chan<- []byte, finish chan<- bool) {
+func dumpOutput(conn net.Conn, output chan<- []byte, finish sync.Mutex) {
 	v2net.ReaderToChan(output, conn)
+	finish.Unlock()
 	close(output)
-	close(finish)
 }
diff --git a/proxy/socks/socks.go b/proxy/socks/socks.go
index 4237a0311..f6b19ed1d 100644
--- a/proxy/socks/socks.go
+++ b/proxy/socks/socks.go
@@ -6,6 +6,7 @@ import (
 	"io"
 	"net"
 	"strconv"
+	"sync"
 
 	"github.com/v2ray/v2ray-core"
 	"github.com/v2ray/v2ray-core/common/log"
@@ -173,23 +174,24 @@ func (server *SocksServer) HandleConnection(connection net.Conn) error {
 	ray := server.vPoint.DispatchToOutbound(v2net.NewTCPPacket(dest))
 	input := ray.InboundInput()
 	output := ray.InboundOutput()
-	readFinish := make(chan bool)
-	writeFinish := make(chan bool)
+	var readFinish, writeFinish sync.Mutex
+	readFinish.Lock()
+	writeFinish.Lock()
 
 	go dumpInput(reader, input, readFinish)
 	go dumpOutput(connection, output, writeFinish)
-	<-writeFinish
+	writeFinish.Lock()
 
 	return nil
 }
 
-func dumpInput(reader io.Reader, input chan<- []byte, finish chan<- bool) {
+func dumpInput(reader io.Reader, input chan<- []byte, finish sync.Mutex) {
 	v2net.ReaderToChan(input, reader)
+	finish.Unlock()
 	close(input)
-	close(finish)
 }
 
-func dumpOutput(writer io.Writer, output <-chan []byte, finish chan<- bool) {
+func dumpOutput(writer io.Writer, output <-chan []byte, finish sync.Mutex) {
 	v2net.ChanToWriter(writer, output)
-	close(finish)
+	finish.Unlock()
 }
diff --git a/proxy/vmess/vmessin.go b/proxy/vmess/vmessin.go
index e0c86ff34..7ae7b7cfe 100644
--- a/proxy/vmess/vmessin.go
+++ b/proxy/vmess/vmessin.go
@@ -5,6 +5,7 @@ import (
 	"io"
 	"net"
 	"strconv"
+	"sync"
 	"time"
 
 	"github.com/v2ray/v2ray-core"
@@ -77,9 +78,9 @@ func (handler *VMessInboundHandler) HandleConnection(connection net.Conn) error
 	ray := handler.vPoint.DispatchToOutbound(v2net.NewTCPPacket(request.Destination()))
 	input := ray.InboundInput()
 	output := ray.InboundOutput()
-
-	readFinish := make(chan bool)
-	writeFinish := make(chan bool)
+	var readFinish, writeFinish sync.Mutex
+	readFinish.Lock()
+	writeFinish.Lock()
 
 	go handleInput(request, connection, input, readFinish)
 
@@ -100,20 +101,20 @@ func (handler *VMessInboundHandler) HandleConnection(connection net.Conn) error
 		buffer = append(buffer, data...)
 		responseWriter.Write(buffer)
 		go handleOutput(request, responseWriter, output, writeFinish)
-		<-writeFinish
+		writeFinish.Lock()
 	}
 
 	if tcpConn, ok := connection.(*net.TCPConn); ok {
 		tcpConn.CloseWrite()
 	}
-	<-readFinish
+	readFinish.Lock()
 
 	return nil
 }
 
-func handleInput(request *protocol.VMessRequest, reader io.Reader, input chan<- []byte, finish chan<- bool) {
+func handleInput(request *protocol.VMessRequest, reader io.Reader, input chan<- []byte, finish sync.Mutex) {
 	defer close(input)
-	defer close(finish)
+	defer finish.Unlock()
 
 	requestReader, err := v2io.NewAesDecryptReader(request.RequestKey[:], request.RequestIV[:], reader)
 	if err != nil {
@@ -124,9 +125,9 @@ func handleInput(request *protocol.VMessRequest, reader io.Reader, input chan<-
 	v2net.ReaderToChan(input, requestReader)
 }
 
-func handleOutput(request *protocol.VMessRequest, writer io.Writer, output <-chan []byte, finish chan<- bool) {
+func handleOutput(request *protocol.VMessRequest, writer io.Writer, output <-chan []byte, finish sync.Mutex) {
 	v2net.ChanToWriter(writer, output)
-	close(finish)
+	finish.Unlock()
 }
 
 type VMessInboundHandlerFactory struct {
diff --git a/proxy/vmess/vmessout.go b/proxy/vmess/vmessout.go
index 69b04b47d..86337663e 100644
--- a/proxy/vmess/vmessout.go
+++ b/proxy/vmess/vmessout.go
@@ -6,6 +6,7 @@ import (
 	"crypto/rand"
 	mrand "math/rand"
 	"net"
+	"sync"
 
 	"github.com/v2ray/v2ray-core"
 	v2io "github.com/v2ray/v2ray-core/common/io"
@@ -109,21 +110,21 @@ func startCommunicate(request *protocol.VMessRequest, dest v2net.Destination, ra
 
 	input := ray.OutboundInput()
 	output := ray.OutboundOutput()
-
-	requestFinish := make(chan bool)
-	responseFinish := make(chan bool)
+	var requestFinish, responseFinish sync.Mutex
+	requestFinish.Lock()
+	responseFinish.Lock()
 
 	go handleRequest(conn, request, input, requestFinish)
 	go handleResponse(conn, request, output, responseFinish)
 
-	<-requestFinish
+	requestFinish.Lock()
 	conn.CloseWrite()
-	<-responseFinish
+	responseFinish.Lock()
 	return nil
 }
 
-func handleRequest(conn *net.TCPConn, request *protocol.VMessRequest, input <-chan []byte, finish chan<- bool) {
-	defer close(finish)
+func handleRequest(conn *net.TCPConn, request *protocol.VMessRequest, input <-chan []byte, finish sync.Mutex) {
+	defer finish.Unlock()
 	encryptRequestWriter, err := v2io.NewAesEncryptWriter(request.RequestKey[:], request.RequestIV[:], conn)
 	if err != nil {
 		log.Error("VMessOut: Failed to create encrypt writer: %v", err)
@@ -154,8 +155,8 @@ func handleRequest(conn *net.TCPConn, request *protocol.VMessRequest, input <-ch
 	return
 }
 
-func handleResponse(conn *net.TCPConn, request *protocol.VMessRequest, output chan<- []byte, finish chan<- bool) {
-	defer close(finish)
+func handleResponse(conn *net.TCPConn, request *protocol.VMessRequest, output chan<- []byte, finish sync.Mutex) {
+	defer finish.Unlock()
 	defer close(output)
 	responseKey := md5.Sum(request.RequestKey[:])
 	responseIV := md5.Sum(request.RequestIV[:])