Socket.IO: 400 Bad Request - socket.io

Question

I'm trying to make a connection to a node server from a page served by an APACHE server but I'm running into issues with the connection. I was getting cross domain errors until I set origin to allow all but now I'm getting a 400 bad request error.
server
var http = require('http');
var io = require('socket.io');
var server = http.createServer(function(request, response){
console.log('Connection');
response.writeHead(200, {'Content-Type': 'text/html'});
//response.write('hello world');
response.end();
});
server.listen(8001);
io.listen(server);
var socket = io.listen(server);
socket.set('origins', '*');
socket.on('connection', function() {
console.log('mooo');
});
client
<script src="https://cdn.socket.io/socket.io-1.3.5.js"></script>
<script src = "http://localhost:8001"> </script>
<script>
var socket = io.connect('http://localhost:8001');
</script>
error:
GET XHR http://localhost:8001/socket.io/ [HTTP/1.1 400 Bad Request 2ms]

Answer 1

Your code is running fine without the following code but Im not running on apache. I have got the output "hello world" in browser (http://localhost:8001/).
var socket = io.listen(server);
io.set('origins', '*');
io.on('connection', function() {
console.log('mooo');
});
How are your accessing the page because 404 is something that your page can not be located by the request.