Basic socket.io application not working-Collection of common programming errors

I created and ran a nodejs file server.js:

var io = require('socket.io').listen(8080); 
io.set('log level', 1);
io.sockets.on('connection', function (socket) {
  // pass  
});

and a client client.js:

window.onload = function(){
    var connected = function(){
    console.log("connect")
    }

    var start = function() {
        socket = new io.Socket();
        socket.connect('http://localhost:8080');
        socket.on('connect', connected);
    };
    start();
}

I included socket.io:

but in the debugger I look: Request URL:http: //undefined/socket.io/1/?t=1359905123022

I’m using django, and I ran django server in 8000 port…

WTF?

1. try to replace this lines in client.js:

   socket = new io.Socket();
   socket.connect('http://localhost:8080');
   

   to:

   var socket = io.connect('http://localhost:8080');
   

Originally posted 2013-11-09 19:42:53.