Websocket Not working about activej HOT 5 CLOSED

    @Provides 
    AsyncServlet servlet() {
      return RoutingServlet.create()
              .mapWebSocket("/", (webSocket) -> webSocket.readMessage()
               .whenResult((message) -> System.out.println("Received:" + message.getText()))
               .then(() -> webSocket.writeMessage(WebSocket.Message.text("Halo Bosss"))));

public final class WebSocketPongServerExample extends HttpServerLauncher {

    //[START EXAMPLE]
    @Provides
    AsyncServlet servlet() {
        return RoutingServlet.create()
                .mapWebSocket("/websocket", webSocket -> readMessage(webSocket))
                .mapWebSocket("/", webSocket -> readMessage(webSocket));
    }
    //[END EXAMPLE]

    void readMessage(WebSocket websocket) {
        websocket.readMessage()
                .whenResult(message -> System.out.println("Received:" + message.getText()))
                .whenComplete(() -> {
                    if (!websocket.isClosed()) {
                        readMessage(websocket);
                    } else {
                        websocket.close();
                    }
                });
    }

    public static void main(String[] args) throws Exception {
        WebSocketPongServerExample launcher = new WebSocketPongServerExample();
        launcher.launch(args);
    }
}

void readMessage(WebSocket websocket) {
     websocket.messageReadChannel()
//          .filter(message -> message.getType() == MessageType.TEXT)
            .map(Message::getText)
            .streamTo(ChannelConsumer.ofConsumer(text -> System.out.println("Received:" + text)));
  }