diff --git a/cmd/frpc/control.go b/cmd/frpc/control.go
index 2b0c59bb..971c5957 100644
--- a/cmd/frpc/control.go
+++ b/cmd/frpc/control.go
@@ -33,7 +33,7 @@ func ControlProcess(cli *client.ProxyClient, wait *sync.WaitGroup) {
 			log.Debug("ProxyName [%s], server close this control conn", cli.Name)
 			var sleepTime time.Duration = 1
 			for {
-				log.Debug("ProxyName [%s], try to reconnect to server[%s:%d]...", cli.Name, ServerAddr, ServerPort)
+				log.Debug("ProxyName [%s], try to reconnect to server[%s:%d]...", cli.Name, client.ServerAddr, client.ServerPort)
 				tmpConn := loginToServer(cli)
 				if tmpConn != nil {
 					c.Close()
@@ -52,7 +52,7 @@ func ControlProcess(cli *client.ProxyClient, wait *sync.WaitGroup) {
 			continue
 		}
 
-		cli.StartTunnel(ServerAddr, ServerPort)
+		cli.StartTunnel(client.ServerAddr, client.ServerPort)
 	}
 }
 
@@ -61,9 +61,9 @@ func loginToServer(cli *client.ProxyClient) (connection *conn.Conn) {
 
 	connection = nil
 	for i := 0; i < 1; i++ {
-		err := c.ConnectServer(ServerAddr, ServerPort)
+		err := c.ConnectServer(client.ServerAddr, client.ServerPort)
 		if err != nil {
-			log.Error("ProxyName [%s], connect to server [%s:%d] error, %v", cli.Name, ServerAddr, ServerPort, err)
+			log.Error("ProxyName [%s], connect to server [%s:%d] error, %v", cli.Name, client.ServerAddr, client.ServerPort, err)
 			break
 		}
 
@@ -99,7 +99,7 @@ func loginToServer(cli *client.ProxyClient) (connection *conn.Conn) {
 
 		connection = c
 		go startHeartBeat(connection)
-		log.Debug("ProxyName [%s], connect to server[%s:%d] success!", cli.Name, ServerAddr, ServerPort)
+		log.Debug("ProxyName [%s], connect to server[%s:%d] success!", cli.Name, client.ServerAddr, client.ServerPort)
 	}
 
 	if connection == nil {
@@ -113,7 +113,7 @@ func startHeartBeat(con *conn.Conn) {
 	isHeartBeatContinue = true
 	log.Debug("Start to send heartbeat")
 	for {
-		time.Sleep(time.Duration(HeartBeatInterval) * time.Second)
+		time.Sleep(time.Duration(client.HeartBeatInterval) * time.Second)
 		if isHeartBeatContinue {
 			err := con.Write("\n")
 			if err != nil {
diff --git a/cmd/frpc/main.go b/cmd/frpc/main.go
index 7e7fe4ae..c17f3e76 100644
--- a/cmd/frpc/main.go
+++ b/cmd/frpc/main.go
@@ -4,22 +4,23 @@ import (
 	"os"
 	"sync"
 
+	"github.com/fatedier/frp/models/client"
 	"github.com/fatedier/frp/utils/log"
 )
 
 func main() {
-	err := LoadConf("./frpc.ini")
+	err := client.LoadConf("./frpc.ini")
 	if err != nil {
 		os.Exit(-1)
 	}
 
-	log.InitLog(LogWay, LogFile, LogLevel)
+	log.InitLog(client.LogWay, client.LogFile, client.LogLevel)
 
 	// wait until all control goroutine exit
 	var wait sync.WaitGroup
-	wait.Add(len(ProxyClients))
+	wait.Add(len(client.ProxyClients))
 
-	for _, client := range ProxyClients {
+	for _, client := range client.ProxyClients {
 		go ControlProcess(client, &wait)
 	}
 
diff --git a/cmd/frps/control.go b/cmd/frps/control.go
index 17973850..5f2eab99 100644
--- a/cmd/frps/control.go
+++ b/cmd/frps/control.go
@@ -63,34 +63,34 @@ func controlWorker(c *conn.Conn) {
 	}
 
 	// others is from server to client
-	server, ok := ProxyServers[clientCtlReq.ProxyName]
+	s, ok := server.ProxyServers[clientCtlReq.ProxyName]
 	if !ok {
 		log.Warn("ProxyName [%s] is not exist", clientCtlReq.ProxyName)
 		return
 	}
 
 	// read control msg from client
-	go readControlMsgFromClient(server, c)
+	go readControlMsgFromClient(s, c)
 
 	serverCtlReq := &msg.ClientCtlReq{}
 	serverCtlReq.Type = consts.WorkConn
 	for {
-		_, isStop := server.WaitUserConn()
+		_, isStop := s.WaitUserConn()
 		if isStop {
 			break
 		}
 		buf, _ := json.Marshal(serverCtlReq)
 		err = c.Write(string(buf) + "\n")
 		if err != nil {
-			log.Warn("ProxyName [%s], write to client error, proxy exit", server.Name)
-			server.Close()
+			log.Warn("ProxyName [%s], write to client error, proxy exit", s.Name)
+			s.Close()
 			return
 		}
 
-		log.Debug("ProxyName [%s], write to client to add work conn success", server.Name)
+		log.Debug("ProxyName [%s], write to client to add work conn success", s.Name)
 	}
 
-	log.Error("ProxyName [%s], I'm dead!", server.Name)
+	log.Error("ProxyName [%s], I'm dead!", s.Name)
 	return
 }
 
@@ -98,7 +98,7 @@ func checkProxy(req *msg.ClientCtlReq, c *conn.Conn) (succ bool, info string, ne
 	succ = false
 	needRes = true
 	// check if proxy name exist
-	server, ok := ProxyServers[req.ProxyName]
+	s, ok := server.ProxyServers[req.ProxyName]
 	if !ok {
 		info = fmt.Sprintf("ProxyName [%s] is not exist", req.ProxyName)
 		log.Warn(info)
@@ -106,7 +106,7 @@ func checkProxy(req *msg.ClientCtlReq, c *conn.Conn) (succ bool, info string, ne
 	}
 
 	// check password
-	if req.Passwd != server.Passwd {
+	if req.Passwd != s.Passwd {
 		info = fmt.Sprintf("ProxyName [%s], password is not correct", req.ProxyName)
 		log.Warn(info)
 		return
@@ -114,14 +114,14 @@ func checkProxy(req *msg.ClientCtlReq, c *conn.Conn) (succ bool, info string, ne
 
 	// control conn
 	if req.Type == consts.CtlConn {
-		if server.Status != consts.Idle {
+		if s.Status != consts.Idle {
 			info = fmt.Sprintf("ProxyName [%s], already in use", req.ProxyName)
 			log.Warn(info)
 			return
 		}
 
 		// start proxy and listen for user conn, no block
-		err := server.Start()
+		err := s.Start()
 		if err != nil {
 			info = fmt.Sprintf("ProxyName [%s], start proxy error: %v", req.ProxyName, err.Error())
 			log.Warn(info)
@@ -132,12 +132,12 @@ func checkProxy(req *msg.ClientCtlReq, c *conn.Conn) (succ bool, info string, ne
 	} else if req.Type == consts.WorkConn {
 		// work conn
 		needRes = false
-		if server.Status != consts.Working {
+		if s.Status != consts.Working {
 			log.Warn("ProxyName [%s], is not working when it gets one new work conn", req.ProxyName)
 			return
 		}
 
-		server.CliConnChan <- c
+		s.CliConnChan <- c
 	} else {
 		info = fmt.Sprintf("ProxyName [%s], type [%d] unsupport", req.ProxyName, req.Type)
 		log.Warn(info)
@@ -148,13 +148,13 @@ func checkProxy(req *msg.ClientCtlReq, c *conn.Conn) (succ bool, info string, ne
 	return
 }
 
-func readControlMsgFromClient(server *server.ProxyServer, c *conn.Conn) {
+func readControlMsgFromClient(s *server.ProxyServer, c *conn.Conn) {
 	isContinueRead := true
 	f := func() {
 		isContinueRead = false
-		server.StopWaitUserConn()
+		s.StopWaitUserConn()
 	}
-	timer := time.AfterFunc(time.Duration(HeartBeatTimeout)*time.Second, f)
+	timer := time.AfterFunc(time.Duration(server.HeartBeatTimeout)*time.Second, f)
 	defer timer.Stop()
 
 	for isContinueRead {
@@ -162,16 +162,16 @@ func readControlMsgFromClient(server *server.ProxyServer, c *conn.Conn) {
 		//log.Debug("Receive msg from client! content:%s", content)
 		if err != nil {
 			if err == io.EOF {
-				log.Warn("Server detect client[%s] is dead!", server.Name)
-				server.StopWaitUserConn()
+				log.Warn("Server detect client[%s] is dead!", s.Name)
+				s.StopWaitUserConn()
 				break
 			}
-			log.Error("ProxyName [%s], read error:%s", server.Name, err.Error())
+			log.Error("ProxyName [%s], read error:%s", s.Name, err.Error())
 			continue
 		}
 
 		if content == "\n" {
-			timer.Reset(time.Duration(HeartBeatTimeout) * time.Second)
+			timer.Reset(time.Duration(server.HeartBeatTimeout) * time.Second)
 		}
 	}
 }
diff --git a/cmd/frps/main.go b/cmd/frps/main.go
index 4aef2789..e21f927e 100644
--- a/cmd/frps/main.go
+++ b/cmd/frps/main.go
@@ -3,19 +3,20 @@ package main
 import (
 	"os"
 
+	"github.com/fatedier/frp/models/server"
 	"github.com/fatedier/frp/utils/conn"
 	"github.com/fatedier/frp/utils/log"
 )
 
 func main() {
-	err := LoadConf("./frps.ini")
+	err := server.LoadConf("./frps.ini")
 	if err != nil {
 		os.Exit(-1)
 	}
 
-	log.InitLog(LogWay, LogFile, LogLevel)
+	log.InitLog(server.LogWay, server.LogFile, server.LogLevel)
 
-	l, err := conn.Listen(BindAddr, BindPort)
+	l, err := conn.Listen(server.BindAddr, server.BindPort)
 	if err != nil {
 		log.Error("Create listener error, %v", err)
 		os.Exit(-1)
diff --git a/cmd/frpc/config.go b/models/client/config.go
similarity index 90%
rename from cmd/frpc/config.go
rename to models/client/config.go
index b500e474..063b216d 100644
--- a/cmd/frpc/config.go
+++ b/models/client/config.go
@@ -1,10 +1,9 @@
-package main
+package client
 
 import (
 	"fmt"
 	"strconv"
 
-	"github.com/fatedier/frp/models/client"
 	ini "github.com/vaughan0/go-ini"
 )
 
@@ -18,7 +17,7 @@ var (
 	HeartBeatInterval int64  = 5
 )
 
-var ProxyClients map[string]*client.ProxyClient = make(map[string]*client.ProxyClient)
+var ProxyClients map[string]*ProxyClient = make(map[string]*ProxyClient)
 
 func LoadConf(confFile string) (err error) {
 	var tmpStr string
@@ -58,7 +57,7 @@ func LoadConf(confFile string) (err error) {
 	// servers
 	for name, section := range conf {
 		if name != "common" {
-			proxyClient := &client.ProxyClient{}
+			proxyClient := &ProxyClient{}
 			proxyClient.Name = name
 
 			proxyClient.Passwd, ok = section["passwd"]
diff --git a/cmd/frps/config.go b/models/server/config.go
similarity index 90%
rename from cmd/frps/config.go
rename to models/server/config.go
index d3b829fb..f9e974ed 100644
--- a/cmd/frps/config.go
+++ b/models/server/config.go
@@ -1,11 +1,9 @@
-package main
+package server
 
 import (
 	"fmt"
 	"strconv"
 
-	"github.com/fatedier/frp/models/server"
-
 	ini "github.com/vaughan0/go-ini"
 )
 
@@ -19,7 +17,7 @@ var (
 	HeartBeatTimeout int64  = 30
 )
 
-var ProxyServers map[string]*server.ProxyServer = make(map[string]*server.ProxyServer)
+var ProxyServers map[string]*ProxyServer = make(map[string]*ProxyServer)
 
 func LoadConf(confFile string) (err error) {
 	var tmpStr string
@@ -59,7 +57,7 @@ func LoadConf(confFile string) (err error) {
 	// servers
 	for name, section := range conf {
 		if name != "common" {
-			proxyServer := &server.ProxyServer{}
+			proxyServer := &ProxyServer{}
 			proxyServer.Name = name
 
 			proxyServer.Passwd, ok = section["passwd"]
diff --git a/utils/conn/conn.go b/utils/conn/conn.go
index 1fa0cb34..7607ff48 100644
--- a/utils/conn/conn.go
+++ b/utils/conn/conn.go
@@ -80,7 +80,6 @@ func Listen(bindAddr string, bindPort int64) (l *Listener, err error) {
 		for {
 			conn, err := listener.AcceptTCP()
 			if err != nil {
-				log.Error("Accept new tcp connection error, %v", err)
 				continue
 			}