add debug log

server.go

@@ -72,7 +72,7 @@ func forwardWS2TCP(conn1 *websocket.Conn, conn2 net.Conn) {
 
 		for {
 			n, err := conn2.Read(buf)
-			if err != nil {
+			if err != nil && err != io.EOF {
 				log.Errorln(err)
 				break
 			}

tcp_server.go

@@ -36,6 +36,8 @@ func (srv *tcpServer) serve(c net.Conn) {
 
 	u, _ := url.Parse(srv.remote)
 
+	log.Debugf("connected from %s, forward to %s", c.RemoteAddr(), srv.remote)
+
 	if u.Scheme == "ws" || u.Scheme == "wss" {
 		conn1, resp, err := dialer.Dial(srv.remote, nil)
 		if err != nil {

ws_server.go

@@ -46,6 +46,8 @@ func (wss *wsServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	log.Debugf("request %s, forward to %s", p, remote)
+
 	conn, err := upgrader.Upgrade(w, r, nil)
 	if err != nil {
 		log.Errorln(err)