socket.io和session？

问题描述

我正在使用express框架。我想从socket.io访问会话数据。我尝试用client.listener.server.dynamicViewHelpers数据表达dynamicHelpers，但是我无法获取会话数据。有没有一个简单的方法来做到这一点？请看代码

  app.listen（3000）; 
 
 var io = require（'socket.io'）; 
 var io = io.listen（app）; 
 
 io.on（'connection'，function（client）{
 //我想在这里使用会话数据
 client.on（'message'，function（message） {
 //或这里
}）; 
 client.on（'disconnect'，function（）{
 //或这里
}）; 
}）; 
  

解决方案

这不适用于跨越flashsocket的套接字运输（它不发送服务器所需的cookie），但它可靠地为其他所有工作。为了使其工作，在express / connect端，我明确定义会话存储，所以我可以在socket中使用它。 ：

  MemoryStore = require（'connect / middleware / session / memory'），
 var session_store = new MemoryStore ）; 
 app.configure（function（）{
 app.use（express.session（{store：session_store}））; 
}）; 
  

然后在我的套接字代码中，我包含了连接框架，所以我可以使用它的cookie解析来检索connect.sid从cookie。然后，我在会话存储中查找具有该connect.sid的会话，如下所示：

  var connect = require（'connect ）; 
 io.on（'connection'，function（socket_client）{
 var cookie_string = socket_client.request.headers.cookie; 
 var parsed_cookies = connect.utils.parseCookie（cookie_string）; 
 var connect_sid = parsed_cookies ['connect.sid']; 
 if（connect_sid）{
 session_store.get（connect_sid，function（error，session）{
 // HOORAY NOW YOU VE GOT THE SESSION OBJECT !!!! 
}）; 
} 
}）; 
  

然后，您可以根据需要使用会话。

I'm using express framework. I want to reach session data from socket.io. I tried express dynamicHelpers with client.listener.server.dynamicViewHelpers data, but i can't get session data. Is there a simple way to do this? Please see the code

app.listen(3000);

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

io.on('connection', function(client){
    // I want to use session data here
    client.on('message', function(message){
        // or here
    });
    client.on('disconnect', function(){
        // or here
    });
});

解决方案

This won't work for sockets going over the flashsocket transport (it doesn't send the server the needed cookies) but it reliably works for everything else. I just disable the flashsocket transport in my code.

To make it work, in the express/connect side, I explicitly define the session store so I can use it inside socket:

MemoryStore = require('connect/middleware/session/memory'),
var session_store = new MemoryStore();
app.configure(function () {
  app.use(express.session({ store: session_store }));
});

Then inside my socket code, I include the connect framework so I can use its cookie parsing to retrieve the connect.sid from the cookies. I then look up the session in the session store that has that connect.sid like so:

var connect = require('connect');
io.on('connection', function(socket_client) {
  var cookie_string = socket_client.request.headers.cookie;
  var parsed_cookies = connect.utils.parseCookie(cookie_string);
  var connect_sid = parsed_cookies['connect.sid'];
  if (connect_sid) {
    session_store.get(connect_sid, function (error, session) {
      //HOORAY NOW YOU'VE GOT THE SESSION OBJECT!!!!
    });
  }
});

You can then use the session as needed.

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