scaling socket.io cookie problem

[mkuklis]

Hi guys I have a very similar scenario to #202 but based on cookies. For some reason the cookie in on('upgrade', function (req, socket, head) is always undefined. I was wondering if somebody here could point me into the right direction. Here is my current setup:

Balancer:

var http = require('http');
var httpProxy = require('http-proxy');
var uuid = require('node-uuid');
var Cookies = require('cookies');

var addresses = [
  { host: '127.0.0.1', port: 8090 },
  { host: '127.0.0.1', port: 8091 }];

var proxies = addresses.map(function(address) {
  return new httpProxy.HttpProxy({ xforward: true, target: address });
});

var proxiesHash = {};

var balancer = http.createServer(function (req, res) {
  var cookies = new Cookies( req, res);
  var cookie = cookies.get('ws');

  if (!cookie) {
    cookie = uuid.v1();
    cookies.set('ws', cookie);
  }

  if (!proxiesHash[cookie]) {
    var proxy = proxies.shift();
    proxiesHash[cookie] = proxy;
    proxies.push(proxy);
  }
  proxiesHash[cookie].proxyRequest(req, res);
});

balancer.on('upgrade', function (req, socket, head) {
  var cookies = new Cookies(req);
  var cookie = cookies.get('ws'); // always undefined
  if (!proxiesHash[cookie]) return;
  proxiesHash[cookie].proxyWebSocketRequest(req, socket, head);
});

balancer.listen(8000);

Server:

var redis = require('redis');
var sio = require('socket.io');
var RedisStore = sio.RedisStore;
var port = parseInt(process.argv[2]) || 8090;
var io = sio.listen(port);

io.set('store', new RedisStore({
  redisPub: redis.createClient(),
  redisSub: redis.createClient(),
  redisClient: redis.createClient()
}));

io.sockets.on('connection', function (socket) {
  socket.on('ping', function (data) {
    socket.broadcast.emit('pong', data);
  });
});

Client:

var port = 8000;
var io = require('socket.io-client');
var socket = io.connect('http://127.0.0.1:' + port);

socket.on('connect', function () {
  socket.emit('ping', 'hi from client: ' + port);
});

socket.on('pong', function( data) {
  console.log(data);
});

[indexzero]

Check the headers. if the cookie header isn't set then this is a core issue.