diff --git a/goping/ping_test.go b/goping/ping_test.go
index 691771e..c38a01c 100644
--- a/goping/ping_test.go
+++ b/goping/ping_test.go
@@ -5,14 +5,22 @@ import (
 	"os"
 	"os/signal"
 	"testing"
+	"time"
 )
 
 func TestSign(tt *testing.T) {
 	c := make(chan os.Signal, 1)
-	signal.Notify(c, os.Interrupt, os.Kill)
-
-	s := <-c
-	fmt.Println("Got signal:", s)
+	for {
+		select {
+		case s := <-c:
+			signal.Notify(c, os.Interrupt, os.Kill)
+			fmt.Println("Got signal:", s)
+			os.Exit(0)
+		default:
+			fmt.Println("okok")
+			time.Sleep(time.Second * 1)
+		}
+	}
 }
 func TestPing(tt *testing.T) {
 	//if len(os.Args) < 3 {
diff --git a/pong.go b/pong.go
index d454d57..5f0d89b 100644
--- a/pong.go
+++ b/pong.go
@@ -22,11 +22,12 @@ pong www.baidu.com 443 -t 1 -k udp
 pong -a www.baidu.com -p 443 -k tcp -t 3
 `
 
-func main2() {
+func main() {
 	c := make(chan os.Signal, 1)
 	for {
 		select {
 		case s := <-c:
+			fmt.Println("ctc")
 			signal.Notify(c, os.Interrupt, os.Kill)
 			fmt.Println("Got signal:", s)
 			os.Exit(0)
@@ -37,7 +38,7 @@ func main2() {
 	}
 }
 
-func main() {
+func main3() {
 	address := flag.String("a", "", "domain or ip address")
 	port := flag.Int("p", 0, "port")
 	protocol := flag.String("k", "tcp", "protocol kind")