How can I get (Express's) sessionID for a websocket connection

1. Parse cookie
2. Get session id

3. Get session data

   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');});

This was a nightmare, finally got it working for myself using signed cookies!

Set up your store (example memory store):

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

Expose parseCookie as global (if you need it in other modules) like this in app / server js files:

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

Now set up sockets:

//this method gets called latervar 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 timeio = io.listen(server);//configure authenticationio.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