chat

I'm not sure how to properly listen for MultiUserChats, since there are apparently two different ways to listen for them. The first way is to add a MessageListener for each room, like this: MultiUserChat muc = new MultiUserChat(connection,"MyGroup"); muc.addMessageListener(new PacketListener() { @Override public void processPacket(Packet packet) throws NotConnectedException { // TODO Auto-generated method stub } }); The second way is to listen as you would for normal single-chat messages: PacketFilter filter = new MessageTypeFilter(Message.Type.groupchat); connection.addPacketListener(new

看完让你彻底搞懂Websocket原理 偶然在知乎上看到一篇回帖，瞬间觉得之前看的那么多资料都不及这一篇回帖让我对 websocket 的认识深刻有木有。所以转到我博客里，分享一下。比较喜欢看这种博客，读起来很轻松，不枯燥，没有布道师的阵仗，纯粹为分享。废话这么多了，最后再赞一个~ 一、websocket与http WebSocket是HTML5出的东西（协议），也就是说HTTP协议没有变化，或者说没关系，但HTTP是不支持持久连接的（长连接，循环连接的不算） 首先HTTP有 1.1 和 1.0 之说，也就是所谓的 keep-alive ，把多个HTTP请求合并为一个，但是 Websocket 其实是一个新协议，跟HTTP协议基本没有关系，只是为了兼容现有浏览器的握手规范而已，也就是说它是HTTP协议上的一种补充可以通过这样一张图理解 有交集，但是并不是全部。 另外Html5是指的一系列新的API，或者说新规范，新技术。Http协议本身只有1.0和1.1，而且跟Html本身没有直接关系。。通俗来说，你可以用HTTP协议传输非Html数据，就是这样=。= 再简单来说，层级不一样。 二、Websocket是什么样的协议，具体有什么优点 首先，Websocket是一个持久化的协议，相对于HTTP这种非持久的协议来说。简单的举个例子吧，用目前应用比较广泛的PHP生命周期来解释。

I am trying to integrate facebook chat using smack API.But i get an error telling authentication failed using digest md5... Here s the code for authentication: SASLAuthentication.registerSASLMechanism("DIGEST-MD5", SASLDigestMD5Mechanism.class); SASLAuthentication.supportSASLMechanism("DIGEST-MD5", 0); ConnectionConfiguration config = new ConnectionConfiguration("chat.facebook.com",5222); connection = new XMPPConnection(config); config.setSASLAuthenticationEnabled(true); connection.connect(); connection.login(userName, password); below is the error i get wen i run it: Exception in thread "main

成就大师你就看vn 1 <?php 2 namespace app\index\controller; 3 4 use think\Controller; 5 use think\Db; 6 use think\Picture; 7 8 class Chat extends Controller 9 { 10 public function privateChat() 11 { 12 $id = $this->request->param('id'); 13 14 if(!$id){ 15 $this->error('请求错误，请重新登录'); 16 } 17 $res = Db::name('accounts')->where(['id'=>$id,'status'=>1])->field('type,info_id,id')->find(); 18 $head = new Circle(); 19 $re = $head->adopt_id_get_userInfo($id); 20 $res['name'] = $re['cname']; 21 $res['photo']= $re['photo']; 22 23 24 $user = session('da'); 25 Db::name('chat_record')->where(['form'=>$user['id'],

I have a chat application backend built using Web Api where I am exposing several database entities directly to clients. I was wondering whether there is any positive points to map the entities to DTOs or should I continue exposing the entities as I am currently. Just to clarify I am not asking a DTO vs non-DTO general question but just advantages of using it in this scenario since most of the fields in the entities would probably be used by the client. Yes, you can expose your entities if this is a small application developed by one person and you only have few days to finish it. If you