diff --git a/api/control/control.go b/api/control/control.go
index 9eefb61..077a548 100644
--- a/api/control/control.go
+++ b/api/control/control.go
@@ -7,11 +7,12 @@ import (
 	"fmt"
 	"io"
 
+	"google.golang.org/grpc"
+
 	"github.com/p4gefau1t/trojan-go/api/service"
 	"github.com/p4gefau1t/trojan-go/common"
 	"github.com/p4gefau1t/trojan-go/log"
 	"github.com/p4gefau1t/trojan-go/option"
-	"google.golang.org/grpc"
 )
 
 type apiController struct {
diff --git a/api/service/client_test.go b/api/service/client_test.go
index 4d95746..d2276ac 100644
--- a/api/service/client_test.go
+++ b/api/service/client_test.go
@@ -6,10 +6,11 @@ import (
 	"testing"
 	"time"
 
+	"google.golang.org/grpc"
+
 	"github.com/p4gefau1t/trojan-go/common"
 	"github.com/p4gefau1t/trojan-go/config"
 	"github.com/p4gefau1t/trojan-go/statistic/memory"
-	"google.golang.org/grpc"
 )
 
 func TestClientAPI(t *testing.T) {
diff --git a/api/service/server.go b/api/service/server.go
index 8758982..cb550e5 100644
--- a/api/service/server.go
+++ b/api/service/server.go
@@ -8,14 +8,15 @@ import (
 	"io/ioutil"
 	"net"
 
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials"
+
 	"github.com/p4gefau1t/trojan-go/api"
 	"github.com/p4gefau1t/trojan-go/common"
 	"github.com/p4gefau1t/trojan-go/config"
 	"github.com/p4gefau1t/trojan-go/log"
 	"github.com/p4gefau1t/trojan-go/statistic"
 	"github.com/p4gefau1t/trojan-go/tunnel/trojan"
-	"google.golang.org/grpc"
-	"google.golang.org/grpc/credentials"
 )
 
 type ServerAPI struct {
diff --git a/api/service/server_test.go b/api/service/server_test.go
index 521b96f..25bab93 100644
--- a/api/service/server_test.go
+++ b/api/service/server_test.go
@@ -9,11 +9,12 @@ import (
 	"testing"
 	"time"
 
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials"
+
 	"github.com/p4gefau1t/trojan-go/common"
 	"github.com/p4gefau1t/trojan-go/config"
 	"github.com/p4gefau1t/trojan-go/statistic/memory"
-	"google.golang.org/grpc"
-	"google.golang.org/grpc/credentials"
 )
 
 func TestServerAPI(t *testing.T) {
diff --git a/easy/easy.go b/easy/easy.go
index 8ff9d1c..ed3d5e5 100644
--- a/easy/easy.go
+++ b/easy/easy.go
@@ -6,10 +6,9 @@ import (
 	"net"
 	"strconv"
 
-	"github.com/p4gefau1t/trojan-go/option"
-
 	"github.com/p4gefau1t/trojan-go/common"
 	"github.com/p4gefau1t/trojan-go/log"
+	"github.com/p4gefau1t/trojan-go/option"
 	"github.com/p4gefau1t/trojan-go/proxy"
 )
 
diff --git a/log/golog/colorful/colorful_test.go b/log/golog/colorful/colorful_test.go
index 26dc6a9..78b72a9 100644
--- a/log/golog/colorful/colorful_test.go
+++ b/log/golog/colorful/colorful_test.go
@@ -8,8 +8,9 @@ package colorful
 import (
 	"testing"
 
-	"github.com/p4gefau1t/trojan-go/log/golog/buffer"
 	. "github.com/smartystreets/goconvey/convey"
+
+	"github.com/p4gefau1t/trojan-go/log/golog/buffer"
 )
 
 func TestColorBuffer(t *testing.T) {
diff --git a/log/golog/golog.go b/log/golog/golog.go
index d781d6c..4a879c9 100644
--- a/log/golog/golog.go
+++ b/log/golog/golog.go
@@ -12,9 +12,10 @@ import (
 	"sync"
 	"time"
 
+	"golang.org/x/crypto/ssh/terminal"
+
 	"github.com/p4gefau1t/trojan-go/log"
 	"github.com/p4gefau1t/trojan-go/log/golog/colorful"
-	"golang.org/x/crypto/ssh/terminal"
 )
 
 func init() {
diff --git a/main.go b/main.go
index 7c3fdfb..870b4cc 100644
--- a/main.go
+++ b/main.go
@@ -3,10 +3,9 @@ package main
 import (
 	"flag"
 
-	"github.com/p4gefau1t/trojan-go/option"
-
 	_ "github.com/p4gefau1t/trojan-go/component"
 	"github.com/p4gefau1t/trojan-go/log"
+	"github.com/p4gefau1t/trojan-go/option"
 )
 
 func main() {
diff --git a/proxy/custom/custom.go b/proxy/custom/custom.go
index 52ae983..fc6ed49 100644
--- a/proxy/custom/custom.go
+++ b/proxy/custom/custom.go
@@ -4,11 +4,12 @@ import (
 	"context"
 	"strings"
 
+	"gopkg.in/yaml.v3"
+
 	"github.com/p4gefau1t/trojan-go/common"
 	"github.com/p4gefau1t/trojan-go/config"
 	"github.com/p4gefau1t/trojan-go/proxy"
 	"github.com/p4gefau1t/trojan-go/tunnel"
-	"gopkg.in/yaml.v3"
 )
 
 func convert(i interface{}) interface{} {
diff --git a/statistic/memory/memory.go b/statistic/memory/memory.go
index f1dae21..e4c1f52 100644
--- a/statistic/memory/memory.go
+++ b/statistic/memory/memory.go
@@ -6,13 +6,12 @@ import (
 	"sync/atomic"
 	"time"
 
-	"github.com/p4gefau1t/trojan-go/log"
-
-	"github.com/p4gefau1t/trojan-go/config"
+	"golang.org/x/time/rate"
 
 	"github.com/p4gefau1t/trojan-go/common"
+	"github.com/p4gefau1t/trojan-go/config"
+	"github.com/p4gefau1t/trojan-go/log"
 	"github.com/p4gefau1t/trojan-go/statistic"
-	"golang.org/x/time/rate"
 )
 
 const Name = "MEMORY"
diff --git a/test/scenario/proxy_test.go b/test/scenario/proxy_test.go
index 857a3c6..dd4d28f 100644
--- a/test/scenario/proxy_test.go
+++ b/test/scenario/proxy_test.go
@@ -6,13 +6,12 @@ import (
 	"io/ioutil"
 	"net"
 	"net/http"
+	_ "net/http/pprof"
 	"sync"
 	"testing"
 	"time"
 
-	"github.com/p4gefau1t/trojan-go/test/util"
-
-	_ "net/http/pprof"
+	netproxy "golang.org/x/net/proxy"
 
 	_ "github.com/p4gefau1t/trojan-go/api"
 	_ "github.com/p4gefau1t/trojan-go/api/service"
@@ -24,7 +23,7 @@ import (
 	_ "github.com/p4gefau1t/trojan-go/proxy/nat"
 	_ "github.com/p4gefau1t/trojan-go/proxy/server"
 	_ "github.com/p4gefau1t/trojan-go/statistic/memory"
-	netproxy "golang.org/x/net/proxy"
+	"github.com/p4gefau1t/trojan-go/test/util"
 )
 
 // test key and cert
diff --git a/test/util/target.go b/test/util/target.go
index c7eb08b..a6da498 100644
--- a/test/util/target.go
+++ b/test/util/target.go
@@ -10,9 +10,10 @@ import (
 	"sync"
 	"time"
 
+	"golang.org/x/net/websocket"
+
 	"github.com/p4gefau1t/trojan-go/common"
 	"github.com/p4gefau1t/trojan-go/log"
-	"golang.org/x/net/websocket"
 )
 
 var HTTPAddr string
diff --git a/tunnel/dokodemo/conn.go b/tunnel/dokodemo/conn.go
index 75c6bc0..bc08b2b 100644
--- a/tunnel/dokodemo/conn.go
+++ b/tunnel/dokodemo/conn.go
@@ -5,7 +5,6 @@ import (
 	"net"
 
 	"github.com/p4gefau1t/trojan-go/common"
-
 	"github.com/p4gefau1t/trojan-go/tunnel"
 )
 
diff --git a/tunnel/freedom/client.go b/tunnel/freedom/client.go
index 51cafab..f8d2cf7 100644
--- a/tunnel/freedom/client.go
+++ b/tunnel/freedom/client.go
@@ -4,11 +4,12 @@ import (
 	"context"
 	"net"
 
+	"github.com/txthinking/socks5"
+	"golang.org/x/net/proxy"
+
 	"github.com/p4gefau1t/trojan-go/common"
 	"github.com/p4gefau1t/trojan-go/config"
 	"github.com/p4gefau1t/trojan-go/tunnel"
-	"github.com/txthinking/socks5"
-	"golang.org/x/net/proxy"
 )
 
 type Client struct {
diff --git a/tunnel/freedom/conn.go b/tunnel/freedom/conn.go
index ac0bd1a..8ef5456 100644
--- a/tunnel/freedom/conn.go
+++ b/tunnel/freedom/conn.go
@@ -4,10 +4,11 @@ import (
 	"bytes"
 	"net"
 
+	"github.com/txthinking/socks5"
+
 	"github.com/p4gefau1t/trojan-go/common"
 	"github.com/p4gefau1t/trojan-go/log"
 	"github.com/p4gefau1t/trojan-go/tunnel"
-	"github.com/txthinking/socks5"
 )
 
 const MaxPacketSize = 1024 * 8
diff --git a/tunnel/freedom/freedom_test.go b/tunnel/freedom/freedom_test.go
index c5df9d1..7167fbe 100644
--- a/tunnel/freedom/freedom_test.go
+++ b/tunnel/freedom/freedom_test.go
@@ -7,10 +7,11 @@ import (
 	"testing"
 	"time"
 
+	"github.com/txthinking/socks5"
+
 	"github.com/p4gefau1t/trojan-go/common"
 	"github.com/p4gefau1t/trojan-go/test/util"
 	"github.com/p4gefau1t/trojan-go/tunnel"
-	"github.com/txthinking/socks5"
 )
 
 func TestConn(t *testing.T) {
diff --git a/tunnel/mux/client.go b/tunnel/mux/client.go
index 5418e3d..d863f26 100644
--- a/tunnel/mux/client.go
+++ b/tunnel/mux/client.go
@@ -7,11 +7,12 @@ import (
 	"sync"
 	"time"
 
+	"github.com/xtaci/smux"
+
 	"github.com/p4gefau1t/trojan-go/common"
 	"github.com/p4gefau1t/trojan-go/config"
 	"github.com/p4gefau1t/trojan-go/log"
 	"github.com/p4gefau1t/trojan-go/tunnel"
-	"github.com/xtaci/smux"
 )
 
 type muxID uint32
diff --git a/tunnel/mux/mux_test.go b/tunnel/mux/mux_test.go
index f989c1c..5a5e323 100644
--- a/tunnel/mux/mux_test.go
+++ b/tunnel/mux/mux_test.go
@@ -4,12 +4,11 @@ import (
 	"context"
 	"testing"
 
-	"github.com/p4gefau1t/trojan-go/tunnel/freedom"
-	"github.com/p4gefau1t/trojan-go/tunnel/transport"
-
 	"github.com/p4gefau1t/trojan-go/common"
 	"github.com/p4gefau1t/trojan-go/config"
 	"github.com/p4gefau1t/trojan-go/test/util"
+	"github.com/p4gefau1t/trojan-go/tunnel/freedom"
+	"github.com/p4gefau1t/trojan-go/tunnel/transport"
 )
 
 func TestMux(t *testing.T) {
diff --git a/tunnel/mux/server.go b/tunnel/mux/server.go
index 964dafe..40d22a0 100644
--- a/tunnel/mux/server.go
+++ b/tunnel/mux/server.go
@@ -3,10 +3,11 @@ package mux
 import (
 	"context"
 
+	"github.com/xtaci/smux"
+
 	"github.com/p4gefau1t/trojan-go/common"
 	"github.com/p4gefau1t/trojan-go/log"
 	"github.com/p4gefau1t/trojan-go/tunnel"
-	"github.com/xtaci/smux"
 )
 
 // Server is a smux server
diff --git a/tunnel/router/client.go b/tunnel/router/client.go
index f880ef8..6c72d20 100644
--- a/tunnel/router/client.go
+++ b/tunnel/router/client.go
@@ -9,13 +9,14 @@ import (
 	"strings"
 
 	"github.com/golang/protobuf/proto"
+	v2router "github.com/v2fly/v2ray-core/v4/app/router"
+
 	"github.com/p4gefau1t/trojan-go/common"
 	"github.com/p4gefau1t/trojan-go/config"
 	"github.com/p4gefau1t/trojan-go/log"
 	"github.com/p4gefau1t/trojan-go/tunnel"
 	"github.com/p4gefau1t/trojan-go/tunnel/freedom"
 	"github.com/p4gefau1t/trojan-go/tunnel/transport"
-	v2router "github.com/v2fly/v2ray-core/v4/app/router"
 )
 
 const (
diff --git a/tunnel/shadowsocks/client.go b/tunnel/shadowsocks/client.go
index 0ff49ce..62a8764 100644
--- a/tunnel/shadowsocks/client.go
+++ b/tunnel/shadowsocks/client.go
@@ -3,11 +3,12 @@ package shadowsocks
 import (
 	"context"
 
+	"github.com/shadowsocks/go-shadowsocks2/core"
+
 	"github.com/p4gefau1t/trojan-go/common"
 	"github.com/p4gefau1t/trojan-go/config"
 	"github.com/p4gefau1t/trojan-go/log"
 	"github.com/p4gefau1t/trojan-go/tunnel"
-	"github.com/shadowsocks/go-shadowsocks2/core"
 )
 
 type Client struct {
diff --git a/tunnel/shadowsocks/server.go b/tunnel/shadowsocks/server.go
index f34fd34..2f950b6 100644
--- a/tunnel/shadowsocks/server.go
+++ b/tunnel/shadowsocks/server.go
@@ -4,12 +4,13 @@ import (
 	"context"
 	"net"
 
+	"github.com/shadowsocks/go-shadowsocks2/core"
+
 	"github.com/p4gefau1t/trojan-go/common"
 	"github.com/p4gefau1t/trojan-go/config"
 	"github.com/p4gefau1t/trojan-go/log"
 	"github.com/p4gefau1t/trojan-go/redirector"
 	"github.com/p4gefau1t/trojan-go/tunnel"
-	"github.com/shadowsocks/go-shadowsocks2/core"
 )
 
 type Server struct {
diff --git a/tunnel/socks/socks_test.go b/tunnel/socks/socks_test.go
index 15ce385..fd5a763 100644
--- a/tunnel/socks/socks_test.go
+++ b/tunnel/socks/socks_test.go
@@ -10,14 +10,15 @@ import (
 	"testing"
 	"time"
 
+	"github.com/txthinking/socks5"
+	"golang.org/x/net/proxy"
+
 	"github.com/p4gefau1t/trojan-go/common"
 	"github.com/p4gefau1t/trojan-go/config"
 	"github.com/p4gefau1t/trojan-go/test/util"
 	"github.com/p4gefau1t/trojan-go/tunnel"
 	"github.com/p4gefau1t/trojan-go/tunnel/adapter"
 	"github.com/p4gefau1t/trojan-go/tunnel/socks"
-	"github.com/txthinking/socks5"
-	"golang.org/x/net/proxy"
 )
 
 func TestSocks(t *testing.T) {
diff --git a/tunnel/tls/client.go b/tunnel/tls/client.go
index db970f2..f6ffc26 100644
--- a/tunnel/tls/client.go
+++ b/tunnel/tls/client.go
@@ -9,13 +9,14 @@ import (
 	"io/ioutil"
 	"strings"
 
+	utls "github.com/refraction-networking/utls"
+
 	"github.com/p4gefau1t/trojan-go/common"
 	"github.com/p4gefau1t/trojan-go/config"
 	"github.com/p4gefau1t/trojan-go/log"
 	"github.com/p4gefau1t/trojan-go/tunnel"
 	"github.com/p4gefau1t/trojan-go/tunnel/tls/fingerprint"
 	"github.com/p4gefau1t/trojan-go/tunnel/transport"
-	utls "github.com/refraction-networking/utls"
 )
 
 // Client is a tls client
diff --git a/tunnel/transport/transport_test.go b/tunnel/transport/transport_test.go
index 65bed86..a25e818 100644
--- a/tunnel/transport/transport_test.go
+++ b/tunnel/transport/transport_test.go
@@ -6,11 +6,10 @@ import (
 	"sync"
 	"testing"
 
-	"github.com/p4gefau1t/trojan-go/config"
-	"github.com/p4gefau1t/trojan-go/tunnel/freedom"
-
 	"github.com/p4gefau1t/trojan-go/common"
+	"github.com/p4gefau1t/trojan-go/config"
 	"github.com/p4gefau1t/trojan-go/test/util"
+	"github.com/p4gefau1t/trojan-go/tunnel/freedom"
 )
 
 func TestTransport(t *testing.T) {
diff --git a/tunnel/trojan/client.go b/tunnel/trojan/client.go
index 79f5411..db17109 100644
--- a/tunnel/trojan/client.go
+++ b/tunnel/trojan/client.go
@@ -7,14 +7,13 @@ import (
 	"time"
 
 	"github.com/p4gefau1t/trojan-go/api"
-	"github.com/p4gefau1t/trojan-go/config"
-	"github.com/p4gefau1t/trojan-go/statistic/memory"
-	"github.com/p4gefau1t/trojan-go/tunnel/mux"
-
 	"github.com/p4gefau1t/trojan-go/common"
+	"github.com/p4gefau1t/trojan-go/config"
 	"github.com/p4gefau1t/trojan-go/log"
 	"github.com/p4gefau1t/trojan-go/statistic"
+	"github.com/p4gefau1t/trojan-go/statistic/memory"
 	"github.com/p4gefau1t/trojan-go/tunnel"
+	"github.com/p4gefau1t/trojan-go/tunnel/mux"
 )
 
 const (
diff --git a/tunnel/trojan/packet.go b/tunnel/trojan/packet.go
index 7a737bb..4946057 100644
--- a/tunnel/trojan/packet.go
+++ b/tunnel/trojan/packet.go
@@ -7,9 +7,8 @@ import (
 	"io/ioutil"
 	"net"
 
-	"github.com/p4gefau1t/trojan-go/log"
-
 	"github.com/p4gefau1t/trojan-go/common"
+	"github.com/p4gefau1t/trojan-go/log"
 	"github.com/p4gefau1t/trojan-go/tunnel"
 )
 
diff --git a/tunnel/trojan/server.go b/tunnel/trojan/server.go
index 0018bfd..c6c3c85 100644
--- a/tunnel/trojan/server.go
+++ b/tunnel/trojan/server.go
@@ -7,14 +7,13 @@ import (
 	"net"
 
 	"github.com/p4gefau1t/trojan-go/api"
-	"github.com/p4gefau1t/trojan-go/statistic/memory"
-	"github.com/p4gefau1t/trojan-go/statistic/mysql"
-
 	"github.com/p4gefau1t/trojan-go/common"
 	"github.com/p4gefau1t/trojan-go/config"
 	"github.com/p4gefau1t/trojan-go/log"
 	"github.com/p4gefau1t/trojan-go/redirector"
 	"github.com/p4gefau1t/trojan-go/statistic"
+	"github.com/p4gefau1t/trojan-go/statistic/memory"
+	"github.com/p4gefau1t/trojan-go/statistic/mysql"
 	"github.com/p4gefau1t/trojan-go/tunnel"
 	"github.com/p4gefau1t/trojan-go/tunnel/mux"
 )
diff --git a/tunnel/trojan/trojan_test.go b/tunnel/trojan/trojan_test.go
index e9e126d..2295337 100644
--- a/tunnel/trojan/trojan_test.go
+++ b/tunnel/trojan/trojan_test.go
@@ -11,7 +11,6 @@ import (
 	"github.com/p4gefau1t/trojan-go/common"
 	"github.com/p4gefau1t/trojan-go/config"
 	"github.com/p4gefau1t/trojan-go/statistic/memory"
-	_ "github.com/p4gefau1t/trojan-go/statistic/memory"
 	"github.com/p4gefau1t/trojan-go/test/util"
 	"github.com/p4gefau1t/trojan-go/tunnel"
 	"github.com/p4gefau1t/trojan-go/tunnel/freedom"
diff --git a/tunnel/websocket/client.go b/tunnel/websocket/client.go
index 186b9bc..04522d9 100644
--- a/tunnel/websocket/client.go
+++ b/tunnel/websocket/client.go
@@ -4,11 +4,12 @@ import (
 	"context"
 	"strings"
 
+	"golang.org/x/net/websocket"
+
 	"github.com/p4gefau1t/trojan-go/common"
 	"github.com/p4gefau1t/trojan-go/config"
 	"github.com/p4gefau1t/trojan-go/log"
 	"github.com/p4gefau1t/trojan-go/tunnel"
-	"golang.org/x/net/websocket"
 )
 
 type Client struct {
diff --git a/tunnel/websocket/conn.go b/tunnel/websocket/conn.go
index 1af90bd..ed5468f 100644
--- a/tunnel/websocket/conn.go
+++ b/tunnel/websocket/conn.go
@@ -4,8 +4,9 @@ import (
 	"context"
 	"net"
 
-	"github.com/p4gefau1t/trojan-go/tunnel"
 	"golang.org/x/net/websocket"
+
+	"github.com/p4gefau1t/trojan-go/tunnel"
 )
 
 type OutboundConn struct {
diff --git a/tunnel/websocket/server.go b/tunnel/websocket/server.go
index 5113a62..3d1925e 100644
--- a/tunnel/websocket/server.go
+++ b/tunnel/websocket/server.go
@@ -9,12 +9,13 @@ import (
 	"strings"
 	"time"
 
+	"golang.org/x/net/websocket"
+
 	"github.com/p4gefau1t/trojan-go/common"
 	"github.com/p4gefau1t/trojan-go/config"
 	"github.com/p4gefau1t/trojan-go/log"
 	"github.com/p4gefau1t/trojan-go/redirector"
 	"github.com/p4gefau1t/trojan-go/tunnel"
-	"golang.org/x/net/websocket"
 )
 
 // Fake response writer
diff --git a/tunnel/websocket/websocket_test.go b/tunnel/websocket/websocket_test.go
index ce38494..6c4ffd2 100644
--- a/tunnel/websocket/websocket_test.go
+++ b/tunnel/websocket/websocket_test.go
@@ -9,13 +9,14 @@ import (
 	"testing"
 	"time"
 
+	"golang.org/x/net/websocket"
+
 	"github.com/p4gefau1t/trojan-go/common"
 	"github.com/p4gefau1t/trojan-go/config"
 	"github.com/p4gefau1t/trojan-go/test/util"
 	"github.com/p4gefau1t/trojan-go/tunnel"
 	"github.com/p4gefau1t/trojan-go/tunnel/freedom"
 	"github.com/p4gefau1t/trojan-go/tunnel/transport"
-	"golang.org/x/net/websocket"
 )
 
 func TestWebsocket(t *testing.T) {
diff --git a/version/version.go b/version/version.go
index 50b1daa..8bf58d2 100644
--- a/version/version.go
+++ b/version/version.go
@@ -5,10 +5,9 @@ import (
 	"fmt"
 	"runtime"
 
+	"github.com/p4gefau1t/trojan-go/common"
 	"github.com/p4gefau1t/trojan-go/constant"
 	"github.com/p4gefau1t/trojan-go/option"
-
-	"github.com/p4gefau1t/trojan-go/common"
 )
 
 type versionOption struct {