XHR Polling Fail - Server

/// NODEJS -------------------------------------------------------------------------------

var fs = require('fs'),
    url = require('url'),
    http = require('http'),
    querystring = require('querystring');

var httpServer = http.createServer(function(req, response){
    fs.readFile('index.html', function(err, data){
        response.writeHead(200, {'Content-Type':'text/html'});
        response.write(data);
        response.end();
    });
}); httpServer.listen(8091);


/// NOWJS --------------------------------------------------------------------------------

var nowjs = require('now');
var everyone = nowjs.initialize(httpServer, {   socketio: { transports: ['xhr-polling', 'jsonp-polling'] }, closureTimeout: 6000 });


/// CONNECTION ---------------------------------------------------------------------------

nowjs.on('connect', function(){
    console.log('USER CONNECTION> userID='+this.user.clientId);
});