netty-socketio之ack消息

1、客户端给服务端发送带有ack请求的消息，服务端收到消息后发送ack响应消息给客户端

 var userName = 'user' + Math.floor((Math.random()*1000)+1);  
function sendMessage() {
               var message = $('#msg').val();
               $('#msg').val('');
               var jsonObject = {userName: userName,message: message};
                        //发送需要ack响应的消息
               socket.emit('ackevent1', jsonObject, function(arg1, arg2) {
                           alert("从服务器发来的确认消息1:" + arg1 + ", 确认消息2:" + arg2);
                        });
		}

2、服务端接收消息，发送ack响应消息给客户端

       server.addEventListener("ackevent1", ChatObject.class, new DataListener<ChatObject>() {
            @Override
            public void onData(final SocketIOClient client, ChatObject data, final AckRequest ackRequest) {