Add -quiet and -q flags

cmd/sclient/main.go

@@ -47,8 +47,10 @@ func main() {
 
 	flag.Usage = usage
 	insecure := flag.Bool("k", false, "ignore bad TLS/SSL/HTTPS certificates")
+	quiet := flag.Bool("q", false, "don't output connection established messages")
 	servername := flag.String("servername", "", "specify a servername different from <remote> (to disable SNI use an IP as <remote> and do use this option)")
 	flag.BoolVar(insecure, "insecure", false, "ignore bad TLS/SSL/HTTPS certificates")
+	flag.BoolVar(quiet, "quiet", false, "don't output connection established messages")
 	flag.Parse()
 	remotestr := flag.Arg(0)
 	localstr := flag.Arg(1)
@@ -69,6 +71,7 @@ func main() {
 		LocalAddress:       "localhost",
 		InsecureSkipVerify: *insecure,
 		ServerName:         *servername,
+		Quiet:              *quiet,
 	}
 
 	remote := strings.Split(remotestr, ":")

sclient.go

@@ -18,6 +18,7 @@ type Tunnel struct {
 	LocalPort          int
 	InsecureSkipVerify bool
 	ServerName         string
+	Quiet              bool
 }
 
 // DialAndListen will create a test TLS connection to the remote address and then
@@ -150,8 +151,10 @@ func (t *Tunnel) handleConnection(remote string, conn netReadWriteCloser) {
 	}
 
 	if "stdio" == conn.RemoteAddr().Network() {
-		fmt.Fprintf(os.Stdout, "(connected to %s:%d and reading from %s)\n",
-			t.RemoteAddress, t.RemotePort, conn.RemoteAddr().String())
+		if t.Quiet == false {
+			fmt.Fprintf(os.Stdout, "(connected to %s:%d and reading from %s)\n",
+				t.RemoteAddress, t.RemotePort, conn.RemoteAddr().String())
+		}
 	} else {
 		fmt.Fprintf(os.Stdout, "[connect] %s => %s:%d\n",
 			strings.Replace(conn.RemoteAddr().String(), "[::1]:", "localhost:", 1), t.RemoteAddress, t.RemotePort)