如何獲得（Express）會話ID以用於WebSocket連接

Question

我正在使用WebSocket npm install ws與Express運行在同一端口上。

我想從剛建立並升級到WebSocket的HTTP連接中獲取關聯的'sessionID'。

// start express listening 
server.listen(conf.server.port, conf.server.host); 

var WebSocketServer = require('ws').Server 
    , wss = new WebSocketServer({server: server}); 

wss.on('connection', function(ws) { 
    var sessionID = // how do I get this? 
    ws.on('message', function(message) { 
     console.log('received: %s', message); 
    }); 
    ws.send('something'); 
}); 

這怎麼辦？

（我目前解決該問題通過在頁面發送會話ID，但是這是醜陋的。）

Answer 1

1. 解析餅乾
2. 獲取會話ID

3. 獲取會話數據

   var express = require('express'); 
   var parseCookie = express.cookieParser(); 
   var MemoryStore = express.session.MemoryStore; 
   
   var store = new MemoryStore(); 
   
   app.configure(function() { 
       app.use(express.session({ store: store, secret: '123456', key: 'sid' })); 
   }); 
   
   wss.on('connection', function(ws) { 
       parseCookie(ws.upgradeReq, null, function(err) { 
        var sessionID = ws.upgradeReq.cookies['sid']; 
        store.get(sessionID, function(err, session) { 
         // session 
        }); 
       }); 
   
       ws.on('message', function(message) { 
        console.log('received: %s', message); 
       }); 
       ws.send('something'); 
   }); 
   

Answer 2

這是一場噩夢，終於讓它爲我自己使用簽名的餅乾工作！

設置你的商店（例如內存存儲）：

var MemoryStore = express.session.MemoryStore; 
store = new MemoryStore(); 

暴露parseCookie全球（如果你需要它在其他模塊）這樣的應用程序/服務器js文件：

app.use(parseCookie = express.cookieParser('secret')); 

現在設置套接字：

//this method gets called later 
var ensureAuthenticatedSocket = function(handshake, callback) { 
    cookie = cookieParser(handshake, null, function(err) { 
     var sessionID = handshake.signedCookies['sid']; 
     store.get(sessionID, function(err, session) { 
      callback(err, session); 
     }); 
    }); 
}; 
//listen time 
io = io.listen(server); 
//configure authentication 
io.configure(function() { 
    io.set('authorization', function(handshake, callback) { 
     //call the method with handshake as parameter, wait for callback 
     ensureAuthenticatedSocket(handshake, function(err, session) { 
      if (!err && session) { 
       //no error + found session = wicked! 
       callback(null, true); 
      } else { 
       callback(null, false); 
      } 
     }); 
    }); 
}); 
... 
//more socket code