use WG opts and add func gracefulStop

subscriber.go

@@ -184,11 +184,11 @@ func validateSubscriber(sub server.Subscriber) error {
 	return nil
 }
 
-func (s *tcpServer) createSubHandler(sb *tcpSubscriber, opts server.Options) broker.Handler {
+func (h *tcpServer) createSubHandler(sb *tcpSubscriber, opts server.Options) broker.Handler {
 	return func(p broker.Event) error {
 		msg := p.Message()
 		ct := msg.Header["Content-Type"]
-		cf, err := s.newCodec(ct)
+		cf, err := h.newCodec(ct)
 		if err != nil {
 			return err
 		}

tcp.go

@@ -404,6 +404,7 @@ func (h *tcpServer) Start() error {
 			}
 		}
 
+		h.gracefulStop()
 		ch <- ts.Close()
 
 		// deregister
@@ -420,19 +421,21 @@ func (h *tcpServer) Start() error {
 }
 
 func (h *tcpServer) Stop() error {
+	ch := make(chan error)
+	h.exit <- ch
+	return <-ch
+}
+
+func (h *tcpServer) gracefulStop() {
 	ctx, cancel := context.WithTimeout(context.Background(), h.opts.GracefulTimeout)
 
 	go func() {
-		defer cancel()
-		h.wg.Wait()
+		h.opts.Wait.Wait()
+		cancel()
 	}()
 
 	// wait timeout or finish all connects
 	<-ctx.Done()
-
-	ch := make(chan error)
-	h.exit <- ch
-	return <-ch
 }
 
 func (h *tcpServer) String() string {
@@ -483,9 +486,9 @@ func (h *tcpServer) serve(ln net.Listener, hd Handler) {
 			return
 		}
 
-		h.wg.Add(1)
+		h.opts.Wait.Add(1)
 		go func() {
-			defer h.wg.Done()
+			defer h.opts.Wait.Done()
 			hd.Serve(c)
 		}()
 	}