Hi, I'm trying to run the websockets example with undertow-core-1.0.0.Beta18 but it doesn't seem to work. I simplified the code: public class WebSocketServer { public static void main(final String[] args) { Undertow.builder().addListener(8080, "localhost").setHandler(path().addPath("/myapp", websocket(new WebSocketConnectionCallback() { @Override public void onConnect(WebSocketHttpExchange exchange, WebSocketChannel channel) { System.out.println("**** onConnect ********"); channel.getReceiveSetter().set(new AbstractReceiveListener() { @Override protected void onFullTextMessage(WebSocketChannel channel, BufferedTextMessage message) { System.out.println("**** onFullTextMessage ********"); WebSockets.sendText(message.getData(), channel, null); } }); } }))).build().start(); } } Although the "OnConnect" handler is called, the "onFullTextMessage" is never called. Do someone know why ? Thanks Eitan