node.js - 如何获取 websocket 连接的(Express 的)sessionID

Question

我在 Express 运行的同一端口上使用 WebSockets npm install ws。

我想从刚刚建立并升级到 WebSocket 的 HTTP 连接中获取关联的“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');
});

如何做到这一点？

(我目前通过在页面中发送 sessionID 来解决这个问题，但这很难看。)

Answer 1

1. 解析 cookie
2. 获取 session ID

3. 获取 session 数据

   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');
   });