Simple socket.io example not work

This is server file

var io = require('socket.io').listen(7000);

io.sockets.on('connection', function(socket) {
    console.log("### new connection ###");
});

This is for client

$j(document).ready(function() {
    var socket = io.connect('http://address.net:7000');
    console.log(socket);
});

Server starts correct without any errors. I copied from node_modules and attach to my site < head > section file "socket.io.min.js" file for client from dist folder.

And in output of server isn't any ### new connection ### when I run my site. Why?