diff --git a/bridge/bridge.go b/bridge/bridge.go
index abaa737..53a2e76 100755
--- a/bridge/bridge.go
+++ b/bridge/bridge.go
@@ -4,6 +4,15 @@ import (
 	"encoding/binary"
 	"errors"
 	"fmt"
+	"net"
+	"os"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/astaxie/beego"
+	"github.com/astaxie/beego/logs"
 	"github.com/cnlh/nps/lib/common"
 	"github.com/cnlh/nps/lib/conn"
 	"github.com/cnlh/nps/lib/crypt"
@@ -12,14 +21,6 @@ import (
 	"github.com/cnlh/nps/lib/version"
 	"github.com/cnlh/nps/server/connection"
 	"github.com/cnlh/nps/server/tool"
-	"github.com/astaxie/beego"
-	"github.com/astaxie/beego/logs"
-	"net"
-	"os"
-	"strconv"
-	"strings"
-	"sync"
-	"time"
 )
 
 type Client struct {
@@ -146,7 +147,7 @@ func (s *Bridge) GetHealthFromClient(id int, c *conn.Conn) {
 			})
 		}
 	}
-	s.DelClient(id, )
+	s.DelClient(id)
 }
 
 //验证失败，返回错误验证flag，并且关闭连接
diff --git a/client/client.go b/client/client.go
index c338293..52da907 100755
--- a/client/client.go
+++ b/client/client.go
@@ -2,17 +2,18 @@ package client
 
 import (
 	"bufio"
+	"net"
+	"net/http"
+	"strconv"
+	"time"
+
+	"github.com/astaxie/beego/logs"
 	"github.com/cnlh/nps/lib/common"
 	"github.com/cnlh/nps/lib/config"
 	"github.com/cnlh/nps/lib/conn"
 	"github.com/cnlh/nps/lib/crypt"
 	"github.com/cnlh/nps/lib/mux"
-	"github.com/astaxie/beego/logs"
 	"github.com/xtaci/kcp-go"
-	"net"
-	"net/http"
-	"strconv"
-	"time"
 )
 
 type TRPClient struct {
diff --git a/client/client_test.go b/client/client_test.go
index 3ab27db..84ff3b0 100644
--- a/client/client_test.go
+++ b/client/client_test.go
@@ -1,12 +1,13 @@
 package client
 
 import (
-	"github.com/cnlh/nps/lib/common"
-	conn2 "github.com/cnlh/nps/lib/conn"
-	"github.com/cnlh/nps/lib/file"
 	"net"
 	"sync"
 	"testing"
+
+	"github.com/cnlh/nps/lib/common"
+	conn2 "github.com/cnlh/nps/lib/conn"
+	"github.com/cnlh/nps/lib/file"
 )
 
 func TestConfig(t *testing.T) {
diff --git a/client/control.go b/client/control.go
index 7b0e39b..5673f14 100644
--- a/client/control.go
+++ b/client/control.go
@@ -5,14 +5,6 @@ import (
 	"encoding/binary"
 	"errors"
 	"fmt"
-	"github.com/cnlh/nps/lib/common"
-	"github.com/cnlh/nps/lib/config"
-	"github.com/cnlh/nps/lib/conn"
-	"github.com/cnlh/nps/lib/crypt"
-	"github.com/cnlh/nps/lib/version"
-	"github.com/astaxie/beego/logs"
-	"github.com/xtaci/kcp-go"
-	"golang.org/x/net/proxy"
 	"io/ioutil"
 	"log"
 	"math"
@@ -26,6 +18,15 @@ import (
 	"strconv"
 	"strings"
 	"time"
+
+	"github.com/astaxie/beego/logs"
+	"github.com/cnlh/nps/lib/common"
+	"github.com/cnlh/nps/lib/config"
+	"github.com/cnlh/nps/lib/conn"
+	"github.com/cnlh/nps/lib/crypt"
+	"github.com/cnlh/nps/lib/version"
+	"github.com/xtaci/kcp-go"
+	"golang.org/x/net/proxy"
 )
 
 func GetTaskStatus(path string) {
@@ -379,7 +380,7 @@ func sendP2PTestMsg(localConn *net.UDPConn, remoteAddr1, remoteAddr2, remoteAddr
 		ip := common.GetIpByAddr(remoteAddr2)
 		go func() {
 			ports := getRandomPortArr(common.GetPortByAddr(remoteAddr3), common.GetPortByAddr(remoteAddr3)+interval*50)
-			for i := 0; i <= 50; i ++ {
+			for i := 0; i <= 50; i++ {
 				go func(port int) {
 					trueAddress := ip + ":" + strconv.Itoa(port)
 					logs.Trace("try send test packet to target %s", trueAddress)
diff --git a/client/health.go b/client/health.go
index b57e7c0..9e0760f 100644
--- a/client/health.go
+++ b/client/health.go
@@ -2,15 +2,16 @@ package client
 
 import (
 	"container/heap"
-	"github.com/cnlh/nps/lib/conn"
-	"github.com/cnlh/nps/lib/file"
-	"github.com/cnlh/nps/lib/sheap"
-	"github.com/astaxie/beego/logs"
-	"github.com/pkg/errors"
 	"net"
 	"net/http"
 	"strings"
 	"time"
+
+	"github.com/astaxie/beego/logs"
+	"github.com/cnlh/nps/lib/conn"
+	"github.com/cnlh/nps/lib/file"
+	"github.com/cnlh/nps/lib/sheap"
+	"github.com/pkg/errors"
 )
 
 var isStart bool
@@ -70,7 +71,7 @@ func check(t *file.Health) {
 	var rs *http.Response
 	for _, v := range arr {
 		if t.HealthCheckType == "tcp" {
-			_, err = net.DialTimeout("tcp", v, time.Duration(t.HealthCheckTimeout)*time.Second);
+			_, err = net.DialTimeout("tcp", v, time.Duration(t.HealthCheckTimeout)*time.Second)
 		} else {
 			client := &http.Client{}
 			client.Timeout = time.Duration(t.HealthCheckTimeout) * time.Second
diff --git a/client/local.go b/client/local.go
index 212fd70..55b9df9 100644
--- a/client/local.go
+++ b/client/local.go
@@ -1,6 +1,12 @@
 package client
 
 import (
+	"net"
+	"net/http"
+	"sync"
+	"time"
+
+	"github.com/astaxie/beego/logs"
 	"github.com/cnlh/nps/lib/common"
 	"github.com/cnlh/nps/lib/config"
 	"github.com/cnlh/nps/lib/conn"
@@ -8,12 +14,7 @@ import (
 	"github.com/cnlh/nps/lib/file"
 	"github.com/cnlh/nps/lib/mux"
 	"github.com/cnlh/nps/server/proxy"
-	"github.com/astaxie/beego/logs"
 	"github.com/xtaci/kcp-go"
-	"net"
-	"net/http"
-	"sync"
-	"time"
 )
 
 var (
@@ -116,7 +117,7 @@ func StartLocalServer(l *config.LocalServer, config *config.CommonConfig) error
 
 func handleUdpMonitor(config *config.CommonConfig, l *config.LocalServer) {
 	ticker := time.NewTicker(time.Second * 1)
-	for{
+	for {
 		select {
 		case <-ticker.C:
 			if !udpConnStatus {
diff --git a/client/register.go b/client/register.go
index 2d994aa..c03fb3c 100644
--- a/client/register.go
+++ b/client/register.go
@@ -2,9 +2,10 @@ package client
 
 import (
 	"encoding/binary"
-	"github.com/cnlh/nps/lib/common"
 	"log"
 	"os"
+
+	"github.com/cnlh/nps/lib/common"
 )
 
 func RegisterLocalIp(server string, vKey string, tp string, proxyUrl string, hour int) {
diff --git a/cmd/npc/npc.go b/cmd/npc/npc.go
index 501718b..fe5b3f5 100644
--- a/cmd/npc/npc.go
+++ b/cmd/npc/npc.go
@@ -3,17 +3,18 @@ package main
 import (
 	"flag"
 	"fmt"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/astaxie/beego/logs"
+	"github.com/ccding/go-stun/stun"
 	"github.com/cnlh/nps/client"
 	"github.com/cnlh/nps/lib/common"
 	"github.com/cnlh/nps/lib/config"
 	"github.com/cnlh/nps/lib/daemon"
 	"github.com/cnlh/nps/lib/file"
 	"github.com/cnlh/nps/lib/version"
-	"github.com/astaxie/beego/logs"
-	"github.com/ccding/go-stun/stun"
-	"os"
-	"strings"
-	"time"
 )
 
 var (
diff --git a/cmd/nps/nps.go b/cmd/nps/nps.go
index ff54052..f66fe66 100644
--- a/cmd/nps/nps.go
+++ b/cmd/nps/nps.go
@@ -2,6 +2,12 @@ package main
 
 import (
 	"flag"
+	"log"
+	"os"
+	"path/filepath"
+
+	"github.com/astaxie/beego"
+	"github.com/astaxie/beego/logs"
 	"github.com/cnlh/nps/lib/common"
 	"github.com/cnlh/nps/lib/crypt"
 	"github.com/cnlh/nps/lib/daemon"
@@ -12,12 +18,7 @@ import (
 	"github.com/cnlh/nps/server/connection"
 	"github.com/cnlh/nps/server/test"
 	"github.com/cnlh/nps/server/tool"
-	"github.com/astaxie/beego"
-	"github.com/astaxie/beego/logs"
 	_ "github.com/cnlh/nps/web/routers"
-	"log"
-	"os"
-	"path/filepath"
 )
 
 var (
diff --git a/lib/common/util.go b/lib/common/util.go
index ce4381d..41f8b3c 100755
--- a/lib/common/util.go
+++ b/lib/common/util.go
@@ -4,8 +4,6 @@ import (
 	"bytes"
 	"encoding/base64"
 	"encoding/binary"
-	"github.com/cnlh/nps/lib/crypt"
-	"github.com/cnlh/nps/lib/pool"
 	"html/template"
 	"io"
 	"io/ioutil"
@@ -16,6 +14,9 @@ import (
 	"strconv"
 	"strings"
 	"sync"
+
+	"github.com/cnlh/nps/lib/crypt"
+	"github.com/cnlh/nps/lib/pool"
 )
 
 //Get the corresponding IP address through domain name
diff --git a/lib/config/config.go b/lib/config/config.go
index 7b4ce5c..c4d144e 100644
--- a/lib/config/config.go
+++ b/lib/config/config.go
@@ -3,10 +3,11 @@ package config
 import (
 	"errors"
 	"fmt"
-	"github.com/cnlh/nps/lib/common"
-	"github.com/cnlh/nps/lib/file"
 	"regexp"
 	"strings"
+
+	"github.com/cnlh/nps/lib/common"
+	"github.com/cnlh/nps/lib/file"
 )
 
 type CommonConfig struct {
diff --git a/lib/conn/conn.go b/lib/conn/conn.go
index 91d1779..c60941e 100755
--- a/lib/conn/conn.go
+++ b/lib/conn/conn.go
@@ -6,13 +6,6 @@ import (
 	"encoding/binary"
 	"encoding/json"
 	"errors"
-	"github.com/cnlh/nps/lib/common"
-	"github.com/cnlh/nps/lib/crypt"
-	"github.com/cnlh/nps/lib/file"
-	"github.com/cnlh/nps/lib/mux"
-	"github.com/cnlh/nps/lib/pool"
-	"github.com/cnlh/nps/lib/rate"
-	"github.com/xtaci/kcp-go"
 	"io"
 	"net"
 	"net/http"
@@ -21,6 +14,14 @@ import (
 	"strings"
 	"sync"
 	"time"
+
+	"github.com/cnlh/nps/lib/common"
+	"github.com/cnlh/nps/lib/crypt"
+	"github.com/cnlh/nps/lib/file"
+	"github.com/cnlh/nps/lib/mux"
+	"github.com/cnlh/nps/lib/pool"
+	"github.com/cnlh/nps/lib/rate"
+	"github.com/xtaci/kcp-go"
 )
 
 type Conn struct {
@@ -373,7 +374,7 @@ func CopyWaitGroup(conn1, conn2 net.Conn, crypt bool, snappy bool, rate *rate.Ra
 }
 
 //get crypt or snappy conn
-func GetConn(conn net.Conn, cpt, snappy bool, rt *rate.Rate, isServer bool) (io.ReadWriteCloser) {
+func GetConn(conn net.Conn, cpt, snappy bool, rt *rate.Rate, isServer bool) io.ReadWriteCloser {
 	if cpt {
 		if isServer {
 			return rate.NewRateConn(crypt.NewTlsServerConn(conn), rt)
diff --git a/lib/conn/listener.go b/lib/conn/listener.go
index 1d23644..f80e01d 100644
--- a/lib/conn/listener.go
+++ b/lib/conn/listener.go
@@ -1,10 +1,11 @@
 package conn
 
 import (
-	"github.com/astaxie/beego/logs"
-	"github.com/xtaci/kcp-go"
 	"net"
 	"strings"
+
+	"github.com/astaxie/beego/logs"
+	"github.com/xtaci/kcp-go"
 )
 
 func NewTcpListenerAndProcess(addr string, f func(c net.Conn), listener *net.Listener) error {
diff --git a/lib/conn/snappy.go b/lib/conn/snappy.go
index 729acb3..a655627 100644
--- a/lib/conn/snappy.go
+++ b/lib/conn/snappy.go
@@ -1,9 +1,10 @@
 package conn
 
 import (
+	"io"
+
 	"github.com/cnlh/nps/lib/pool"
 	"github.com/golang/snappy"
-	"io"
 )
 
 type SnappyConn struct {
diff --git a/lib/crypt/tls.go b/lib/crypt/tls.go
index 75f291a..35a0a74 100644
--- a/lib/crypt/tls.go
+++ b/lib/crypt/tls.go
@@ -2,9 +2,10 @@ package crypt
 
 import (
 	"crypto/tls"
-	"github.com/astaxie/beego/logs"
 	"net"
 	"os"
+
+	"github.com/astaxie/beego/logs"
 )
 
 var pemPath, keyPath string
diff --git a/lib/daemon/daemon.go b/lib/daemon/daemon.go
index 54454b2..3c41086 100644
--- a/lib/daemon/daemon.go
+++ b/lib/daemon/daemon.go
@@ -1,7 +1,6 @@
 package daemon
 
 import (
-	"github.com/cnlh/nps/lib/common"
 	"io/ioutil"
 	"log"
 	"os"
@@ -9,6 +8,8 @@ import (
 	"path/filepath"
 	"strconv"
 	"strings"
+
+	"github.com/cnlh/nps/lib/common"
 )
 
 func InitDaemon(f string, runPath string, pidPath string) {
diff --git a/lib/daemon/reload.go b/lib/daemon/reload.go
index 6b075b6..2db00ac 100644
--- a/lib/daemon/reload.go
+++ b/lib/daemon/reload.go
@@ -3,12 +3,13 @@
 package daemon
 
 import (
-	"github.com/cnlh/nps/lib/common"
-	"github.com/astaxie/beego"
 	"os"
 	"os/signal"
 	"path/filepath"
 	"syscall"
+
+	"github.com/astaxie/beego"
+	"github.com/cnlh/nps/lib/common"
 )
 
 func init() {
diff --git a/lib/file/db.go b/lib/file/db.go
index 69e33d6..c48df2e 100644
--- a/lib/file/db.go
+++ b/lib/file/db.go
@@ -3,14 +3,15 @@ package file
 import (
 	"errors"
 	"fmt"
-	"github.com/cnlh/nps/lib/common"
-	"github.com/cnlh/nps/lib/crypt"
-	"github.com/cnlh/nps/lib/rate"
 	"net/http"
 	"regexp"
 	"sort"
 	"strings"
 	"sync"
+
+	"github.com/cnlh/nps/lib/common"
+	"github.com/cnlh/nps/lib/crypt"
+	"github.com/cnlh/nps/lib/rate"
 )
 
 type DbUtils struct {
diff --git a/lib/file/file.go b/lib/file/file.go
index 541e617..63f3cb7 100644
--- a/lib/file/file.go
+++ b/lib/file/file.go
@@ -3,13 +3,14 @@ package file
 import (
 	"encoding/json"
 	"errors"
-	"github.com/cnlh/nps/lib/common"
-	"github.com/cnlh/nps/lib/rate"
 	"os"
 	"path/filepath"
 	"strings"
 	"sync"
 	"sync/atomic"
+
+	"github.com/cnlh/nps/lib/common"
+	"github.com/cnlh/nps/lib/rate"
 )
 
 func NewJsonDb(runPath string) *JsonDb {
diff --git a/lib/file/obj.go b/lib/file/obj.go
index 3e7acf0..d3a1fbe 100644
--- a/lib/file/obj.go
+++ b/lib/file/obj.go
@@ -1,12 +1,13 @@
 package file
 
 import (
-	"github.com/cnlh/nps/lib/rate"
-	"github.com/pkg/errors"
 	"strings"
 	"sync"
 	"sync/atomic"
 	"time"
+
+	"github.com/cnlh/nps/lib/rate"
+	"github.com/pkg/errors"
 )
 
 type Flow struct {
diff --git a/lib/install/install.go b/lib/install/install.go
index 5b2a515..411a2e2 100644
--- a/lib/install/install.go
+++ b/lib/install/install.go
@@ -3,12 +3,13 @@ package install
 import (
 	"errors"
 	"fmt"
-	"github.com/cnlh/nps/lib/common"
 	"io"
 	"log"
 	"os"
 	"path/filepath"
 	"strings"
+
+	"github.com/cnlh/nps/lib/common"
 )
 
 func InstallNps() {
diff --git a/lib/mux/conn.go b/lib/mux/conn.go
index 9e66577..5016771 100644
--- a/lib/mux/conn.go
+++ b/lib/mux/conn.go
@@ -2,11 +2,12 @@ package mux
 
 import (
 	"errors"
-	"github.com/cnlh/nps/lib/pool"
 	"io"
 	"net"
 	"sync"
 	"time"
+
+	"github.com/cnlh/nps/lib/pool"
 )
 
 type conn struct {
diff --git a/lib/mux/mux.go b/lib/mux/mux.go
index 315bc68..0365a8b 100644
--- a/lib/mux/mux.go
+++ b/lib/mux/mux.go
@@ -4,12 +4,13 @@ import (
 	"bytes"
 	"encoding/binary"
 	"errors"
-	"github.com/cnlh/nps/lib/pool"
 	"math"
 	"net"
 	"sync"
 	"sync/atomic"
 	"time"
+
+	"github.com/cnlh/nps/lib/pool"
 )
 
 const (
@@ -174,7 +175,7 @@ func (s *Mux) readSession() {
 						case conn.getStatusCh <- struct{}{}:
 						default:
 						}
-						conn.hasWrite --
+						conn.hasWrite--
 					case MUX_NEW_CONN_OK: //conn ok
 						conn.connStatusOkCh <- struct{}{}
 					case MUX_NEW_CONN_Fail:
diff --git a/lib/mux/mux_test.go b/lib/mux/mux_test.go
index 463291a..b89e4e9 100644
--- a/lib/mux/mux_test.go
+++ b/lib/mux/mux_test.go
@@ -1,15 +1,16 @@
 package mux
 
 import (
-	"github.com/cnlh/nps/lib/common"
-	"github.com/cnlh/nps/lib/pool"
-	"github.com/astaxie/beego/logs"
 	"log"
 	"net"
 	"net/http"
 	_ "net/http/pprof"
 	"testing"
 	"time"
+
+	"github.com/astaxie/beego/logs"
+	"github.com/cnlh/nps/lib/common"
+	"github.com/cnlh/nps/lib/pool"
 )
 
 var conn1 net.Conn
diff --git a/lib/mux/pmux.go b/lib/mux/pmux.go
index b750838..e593bb0 100644
--- a/lib/mux/pmux.go
+++ b/lib/mux/pmux.go
@@ -5,15 +5,16 @@ package mux
 import (
 	"bufio"
 	"bytes"
-	"github.com/cnlh/nps/lib/common"
-	"github.com/astaxie/beego/logs"
-	"github.com/pkg/errors"
 	"io"
 	"net"
 	"os"
 	"strconv"
 	"strings"
 	"time"
+
+	"github.com/astaxie/beego/logs"
+	"github.com/cnlh/nps/lib/common"
+	"github.com/pkg/errors"
 )
 
 const (
diff --git a/lib/mux/pmux_test.go b/lib/mux/pmux_test.go
index c3c0705..4c8e44e 100644
--- a/lib/mux/pmux_test.go
+++ b/lib/mux/pmux_test.go
@@ -1,9 +1,10 @@
 package mux
 
 import (
-	"github.com/astaxie/beego/logs"
 	"testing"
 	"time"
+
+	"github.com/astaxie/beego/logs"
 )
 
 func TestPortMux_Close(t *testing.T) {
@@ -11,7 +12,7 @@ func TestPortMux_Close(t *testing.T) {
 	logs.EnableFuncCallDepth(true)
 	logs.SetLogFuncCallDepth(3)
 
-	pMux := NewPortMux(8888,"Ds")
+	pMux := NewPortMux(8888, "Ds")
 	go func() {
 		if pMux.Start() != nil {
 			logs.Warn("Error")
diff --git a/lib/mux/queue.go b/lib/mux/queue.go
index f03bafd..9487845 100644
--- a/lib/mux/queue.go
+++ b/lib/mux/queue.go
@@ -2,8 +2,9 @@ package mux
 
 import (
 	"errors"
-	"github.com/cnlh/nps/lib/pool"
 	"sync"
+
+	"github.com/cnlh/nps/lib/pool"
 )
 
 type Element *bufNode
diff --git a/lib/pool/pool.go b/lib/pool/pool.go
index 70e0477..ace8b07 100644
--- a/lib/pool/pool.go
+++ b/lib/pool/pool.go
@@ -36,6 +36,7 @@ var BufPoolCopy = sync.Pool{
 		return &buf
 	},
 }
+
 func PutBufPoolUdp(buf []byte) {
 	if cap(buf) == PoolSizeUdp {
 		BufPoolUdp.Put(buf[:PoolSizeUdp])
@@ -48,7 +49,7 @@ func PutBufPoolCopy(buf []byte) {
 	}
 }
 
-func GetBufPoolCopy() ([]byte) {
+func GetBufPoolCopy() []byte {
 	return (*BufPoolCopy.Get().(*[]byte))[:PoolSizeCopy]
 }
 
diff --git a/server/connection/connection.go b/server/connection/connection.go
index 73eac1d..dbd74ca 100644
--- a/server/connection/connection.go
+++ b/server/connection/connection.go
@@ -1,12 +1,13 @@
 package connection
 
 import (
-	"github.com/cnlh/nps/lib/mux"
-	"github.com/astaxie/beego"
-	"github.com/astaxie/beego/logs"
 	"net"
 	"os"
 	"strconv"
+
+	"github.com/astaxie/beego"
+	"github.com/astaxie/beego/logs"
+	"github.com/cnlh/nps/lib/mux"
 )
 
 var pMux *mux.PortMux
diff --git a/server/proxy/base.go b/server/proxy/base.go
index 68cce5b..93774f3 100644
--- a/server/proxy/base.go
+++ b/server/proxy/base.go
@@ -2,14 +2,15 @@ package proxy
 
 import (
 	"errors"
+	"net"
+	"net/http"
+	"sync"
+
+	"github.com/astaxie/beego/logs"
 	"github.com/cnlh/nps/bridge"
 	"github.com/cnlh/nps/lib/common"
 	"github.com/cnlh/nps/lib/conn"
 	"github.com/cnlh/nps/lib/file"
-	"github.com/astaxie/beego/logs"
-	"net"
-	"net/http"
-	"sync"
 )
 
 type Service interface {
diff --git a/server/proxy/http.go b/server/proxy/http.go
index bf12060..31ec81c 100644
--- a/server/proxy/http.go
+++ b/server/proxy/http.go
@@ -3,13 +3,6 @@ package proxy
 import (
 	"bufio"
 	"crypto/tls"
-	"github.com/cnlh/nps/bridge"
-	"github.com/cnlh/nps/lib/cache"
-	"github.com/cnlh/nps/lib/common"
-	"github.com/cnlh/nps/lib/conn"
-	"github.com/cnlh/nps/lib/file"
-	"github.com/cnlh/nps/server/connection"
-	"github.com/astaxie/beego/logs"
 	"io"
 	"net"
 	"net/http"
@@ -19,6 +12,14 @@ import (
 	"strconv"
 	"strings"
 	"sync"
+
+	"github.com/astaxie/beego/logs"
+	"github.com/cnlh/nps/bridge"
+	"github.com/cnlh/nps/lib/cache"
+	"github.com/cnlh/nps/lib/common"
+	"github.com/cnlh/nps/lib/conn"
+	"github.com/cnlh/nps/lib/file"
+	"github.com/cnlh/nps/server/connection"
 )
 
 type httpServer struct {
diff --git a/server/proxy/https.go b/server/proxy/https.go
index 997a851..303b92d 100644
--- a/server/proxy/https.go
+++ b/server/proxy/https.go
@@ -1,18 +1,19 @@
 package proxy
 
 import (
+	"net"
+	"net/http"
+	"net/url"
+	"sync"
+
+	"github.com/astaxie/beego"
+	"github.com/astaxie/beego/logs"
 	"github.com/cnlh/nps/lib/cache"
 	"github.com/cnlh/nps/lib/common"
 	"github.com/cnlh/nps/lib/conn"
 	"github.com/cnlh/nps/lib/crypt"
 	"github.com/cnlh/nps/lib/file"
-	"github.com/astaxie/beego"
-	"github.com/astaxie/beego/logs"
 	"github.com/pkg/errors"
-	"net"
-	"net/http"
-	"net/url"
-	"sync"
 )
 
 type HttpsServer struct {
diff --git a/server/proxy/p2p.go b/server/proxy/p2p.go
index 470963f..dc6eb07 100644
--- a/server/proxy/p2p.go
+++ b/server/proxy/p2p.go
@@ -1,12 +1,13 @@
 package proxy
 
 import (
-	"github.com/cnlh/nps/lib/common"
-	"github.com/cnlh/nps/lib/pool"
-	"github.com/astaxie/beego/logs"
 	"net"
 	"strings"
 	"time"
+
+	"github.com/astaxie/beego/logs"
+	"github.com/cnlh/nps/lib/common"
+	"github.com/cnlh/nps/lib/pool"
 )
 
 type P2PServer struct {
diff --git a/server/proxy/socks5.go b/server/proxy/socks5.go
index 2215734..2fe72c1 100755
--- a/server/proxy/socks5.go
+++ b/server/proxy/socks5.go
@@ -3,13 +3,14 @@ package proxy
 import (
 	"encoding/binary"
 	"errors"
-	"github.com/cnlh/nps/lib/common"
-	"github.com/cnlh/nps/lib/conn"
-	"github.com/cnlh/nps/lib/file"
-	"github.com/astaxie/beego/logs"
 	"io"
 	"net"
 	"strconv"
+
+	"github.com/astaxie/beego/logs"
+	"github.com/cnlh/nps/lib/common"
+	"github.com/cnlh/nps/lib/conn"
+	"github.com/cnlh/nps/lib/file"
 )
 
 const (
@@ -273,4 +274,4 @@ func NewSock5ModeServer(bridge NetBridge, task *file.Tunnel) *Sock5ModeServer {
 //close
 func (s *Sock5ModeServer) Close() error {
 	return s.listener.Close()
-}
\ No newline at end of file
+}
diff --git a/server/proxy/transport.go b/server/proxy/transport.go
index 364a7b8..d622683 100644
--- a/server/proxy/transport.go
+++ b/server/proxy/transport.go
@@ -3,11 +3,12 @@
 package proxy
 
 import (
-	"github.com/cnlh/nps/lib/common"
-	"github.com/cnlh/nps/lib/conn"
 	"net"
 	"strconv"
 	"syscall"
+
+	"github.com/cnlh/nps/lib/common"
+	"github.com/cnlh/nps/lib/conn"
 )
 
 func HandleTrans(c *conn.Conn, s *TunnelModeServer) error {
diff --git a/server/proxy/udp.go b/server/proxy/udp.go
index 82f2cf2..d2bc130 100755
--- a/server/proxy/udp.go
+++ b/server/proxy/udp.go
@@ -1,14 +1,15 @@
 package proxy
 
 import (
+	"net"
+	"strings"
+
+	"github.com/astaxie/beego/logs"
 	"github.com/cnlh/nps/bridge"
 	"github.com/cnlh/nps/lib/common"
 	"github.com/cnlh/nps/lib/conn"
 	"github.com/cnlh/nps/lib/file"
 	"github.com/cnlh/nps/lib/pool"
-	"github.com/astaxie/beego/logs"
-	"net"
-	"strings"
 )
 
 type UdpModeServer struct {
diff --git a/server/server.go b/server/server.go
index 2534f6e..5e72617 100644
--- a/server/server.go
+++ b/server/server.go
@@ -8,13 +8,13 @@ import (
 	"strings"
 	"time"
 
+	"github.com/astaxie/beego"
+	"github.com/astaxie/beego/logs"
 	"github.com/cnlh/nps/bridge"
 	"github.com/cnlh/nps/lib/common"
 	"github.com/cnlh/nps/lib/file"
 	"github.com/cnlh/nps/server/proxy"
 	"github.com/cnlh/nps/server/tool"
-	"github.com/astaxie/beego"
-	"github.com/astaxie/beego/logs"
 	"github.com/shirou/gopsutil/cpu"
 	"github.com/shirou/gopsutil/load"
 	"github.com/shirou/gopsutil/mem"
diff --git a/server/test/test.go b/server/test/test.go
index fbd8eb7..0a8fbfd 100644
--- a/server/test/test.go
+++ b/server/test/test.go
@@ -1,12 +1,13 @@
 package test
 
 import (
-	"github.com/cnlh/nps/lib/common"
-	"github.com/cnlh/nps/lib/file"
-	"github.com/astaxie/beego"
 	"log"
 	"path/filepath"
 	"strconv"
+
+	"github.com/astaxie/beego"
+	"github.com/cnlh/nps/lib/common"
+	"github.com/cnlh/nps/lib/file"
 )
 
 func TestServerConfig() {
diff --git a/server/tool/utils.go b/server/tool/utils.go
index 9d801a6..6a58bab 100644
--- a/server/tool/utils.go
+++ b/server/tool/utils.go
@@ -1,15 +1,16 @@
 package tool
 
 import (
-	"github.com/cnlh/nps/lib/common"
+	"math"
+	"strconv"
+	"time"
+
 	"github.com/astaxie/beego"
+	"github.com/cnlh/nps/lib/common"
 	"github.com/shirou/gopsutil/cpu"
 	"github.com/shirou/gopsutil/load"
 	"github.com/shirou/gopsutil/mem"
 	"github.com/shirou/gopsutil/net"
-	"math"
-	"strconv"
-	"time"
 )
 
 var (
diff --git a/web/controllers/auth.go b/web/controllers/auth.go
index 5d8cac6..3b6b4c5 100644
--- a/web/controllers/auth.go
+++ b/web/controllers/auth.go
@@ -2,9 +2,10 @@ package controllers
 
 import (
 	"encoding/hex"
-	"github.com/cnlh/nps/lib/crypt"
-	"github.com/astaxie/beego"
 	"time"
+
+	"github.com/astaxie/beego"
+	"github.com/cnlh/nps/lib/crypt"
 )
 
 type AuthController struct {
diff --git a/web/controllers/base.go b/web/controllers/base.go
index 089cee4..b608478 100755
--- a/web/controllers/base.go
+++ b/web/controllers/base.go
@@ -1,16 +1,17 @@
 package controllers
 
 import (
-	"github.com/cnlh/nps/lib/common"
-	"github.com/cnlh/nps/lib/crypt"
-	"github.com/cnlh/nps/lib/file"
-	"github.com/cnlh/nps/server"
-	"github.com/astaxie/beego"
 	"html"
 	"math"
 	"strconv"
 	"strings"
 	"time"
+
+	"github.com/astaxie/beego"
+	"github.com/cnlh/nps/lib/common"
+	"github.com/cnlh/nps/lib/crypt"
+	"github.com/cnlh/nps/lib/file"
+	"github.com/cnlh/nps/server"
 )
 
 type BaseController struct {
diff --git a/web/controllers/client.go b/web/controllers/client.go
index ffe5f59..8a3ae31 100644
--- a/web/controllers/client.go
+++ b/web/controllers/client.go
@@ -1,11 +1,11 @@
 package controllers
 
 import (
+	"github.com/astaxie/beego"
 	"github.com/cnlh/nps/lib/common"
 	"github.com/cnlh/nps/lib/file"
 	"github.com/cnlh/nps/lib/rate"
 	"github.com/cnlh/nps/server"
-	"github.com/astaxie/beego"
 )
 
 type ClientController struct {
diff --git a/web/controllers/login.go b/web/controllers/login.go
index da40e64..c31e9a1 100755
--- a/web/controllers/login.go
+++ b/web/controllers/login.go
@@ -1,11 +1,12 @@
 package controllers
 
 import (
+	"time"
+
+	"github.com/astaxie/beego"
 	"github.com/cnlh/nps/lib/common"
 	"github.com/cnlh/nps/lib/file"
 	"github.com/cnlh/nps/server"
-	"github.com/astaxie/beego"
-	"time"
 )
 
 type LoginController struct {