diff --git a/redirector/redirector.go b/redirector/redirector.go
index c5910f3..ae4068b 100644
--- a/redirector/redirector.go
+++ b/redirector/redirector.go
@@ -10,8 +10,6 @@ import (
 	"github.com/p4gefau1t/trojan-go/log"
 )
 
-const Name = "REDIRECTOR"
-
 type Dial func(net.Addr) (net.Conn, error)
 
 func defaultDial(addr net.Addr) (net.Conn, error) {
diff --git a/test/util/target.go b/test/util/target.go
index b574beb..a0fa45d 100644
--- a/test/util/target.go
+++ b/test/util/target.go
@@ -58,14 +58,15 @@ func runTCPEchoServer() {
 	common.Must(err)
 	wg.Done()
 	go func() {
+		defer listener.Close()
 		for {
 			conn, err := listener.Accept()
 			if err != nil {
 				return
 			}
 			go func(conn net.Conn) {
+				defer conn.Close()
 				for {
-					conn.SetDeadline(time.Now().Add(time.Second))
 					buf := make([]byte, 2048)
 					n, err := conn.Read(buf)
 					if err != nil {
@@ -112,6 +113,7 @@ func runTCPBlackHoleServer() {
 	common.Must(err)
 	wg.Done()
 	go func() {
+		defer listener.Close()
 		for {
 			conn, err := listener.Accept()
 			if err != nil {
@@ -130,6 +132,7 @@ func runUDPBlackHoleServer() {
 	common.Must(err)
 	wg.Done()
 	go func() {
+		defer conn.Close()
 		buf := make([]byte, 1024*8)
 		for {
 			_, _, err := conn.ReadFrom(buf[:])