跨房间沟通之谜

Question

我试着在房间里传递一些信息。我有：

server.js

var io = require('socket.io').listen(8081);

var chat = io
  .of('/chat')
  .on('connection', function (socket) {
    socket.on('chatTestEmit1', function(d) {
        console.log('>> chatTestEmit1 >> '+JSON.stringify(d));
        console.log(io.sockets.manager.rooms);
        socket.to('/news').emit('newsTestEmit1', d);
    });
  });

var news = io
  .of('/news')
  .on('connection', function (socket) {
    socket.on('checkAlive', function(d) {
        console.log('>> checkAlive >> '+JSON.stringify(d));
    });
    socket.on('newsTestEmit1', function(d){
        console.log('>> newsTestEmit1 >> '+JSON.stringify(d));
    });
  });

client.html

<script src="http://localhost:8081/socket.io/socket.io.js"></script>
<script>
  var chat = io.connect('http://localhost:8081/chat')
    , news = io.connect('http://localhost:8081/news');

  chat.on('connect', function () {
    chat.emit('chatTestEmit1',{msg:'This is the message from client.'});
  });

  news.on('connect', function(){
    news.emit('checkAlive',{msg:'News is alive'});
  });
</script>

日志如下所示：

   info  - socket.io started
   debug - client authorized
   info  - handshake authorized 74858017692628057
   debug - setting request GET /socket.io/1/websocket/74858017692628057
   debug - set heartbeat interval for client 74858017692628057
   debug - client authorized for
   debug - websocket writing 1::
   debug - client authorized for /chat
   debug - websocket writing 1::/chat
   debug - client authorized for /news
   debug - websocket writing 1::/news
>> chatTestEmit1 >> {"msg":"This is the message from client."}
{ '': [ '74858017692628057' ],
  '/chat': [ '74858017692628057' ],
  '/news': [ '74858017692628057' ] }
   debug - websocket writing 5::/chat:{"name":"newsTestEmit1","args":[{"msg":"This is the message from client."}]}
>> checkAlive >> {"msg":"News is alive"}
   debug - emitting heartbeat for client 74858017692628057
   debug - websocket writing 2::
   debug - set heartbeat timeout for client 74858017692628057
   debug - got heartbeat packet
   debug - cleared heartbeat timeout for client 74858017692628057
   debug - set heartbeat interval for client 74858017692628057
   debug - emitting heartbeat for client 74858017692628057

如果此代码工作正常，它应该记录如下：

>> newsTestEmit1 >> {"msg":"This is the message from client."}

出现在日志里。请注意，我还尝试了：

io.sockets.in('/news').emit('newsTestEmit1', d);
io.sockets.in('news').emit('newsTestEmit1', d);
io.of('/news').emit('newsTestEmit1', d);

它们都不起作用。我错过了什么吗？

谢谢。

Answer 1

我没有看过你所有的代码，但是一般的想法是，你想在发送消息时发出一个事件+来自客户端的数据，然后在服务器端设置一个事件，在发生事件时进行广播。下面是一些psuedo服务器端代码：

io.sockets.on('connection', function (socket) {
    console.log('Socket connection established.');
    socket.on('message event', function(data){
      socket.broadcast.emit('global chat update', data);}
      );
});

在客户端，您需要2位代码：

1)当聊天事件发生时，类似于：

socket.emit('message event', data)

2)当有全局聊天更新时显示最新聊天的内容。

socket.on('global chat update', function(data) { // your script to update chat data here };