$(document).ready(function () {
    console.log('try connection');
    var socket = io();//.connect('http://' + document.domain + ':' + location.port);
    socket.on('connect', function() {
         console.log('connected');
         socket.emit('message', {data: 'I\'m connected!'});
    });
    socket.on('message', function(data) {

    });

});