Issue in connecting Rails client to Node server

I have a chat application on Nodejs+Socket.io which is running on http://localhost:5001 and the other hand there is a rails application which is running on http://localhost:3000

What i want to achieve ?

1. Connect rails client to node server to talk to each other.

What i did ?

Node server working properly

Added in rails chat page.

<ul id="messages"></ul>

<form action="">
    <input id="m" autocomplete="off"/>
    <button>Send</button>
</form>
<script src="http://localhost:5001/socket.io/socket.io.js"></script>
<script>
    var socket = io.connect('http://localhost:5001');
    socket.on('connect', function (data) {
        console.log('connected!');
    });
</script>
<script>
    var socket = io();
    $('form').submit(function () {
        socket.emit('chat message', $('#m').val());
        $('#m').val('');
        return false;
    });

    socket.on('chat message', function (msg) {
        $('#messages').append($('<li>').text(msg));
    });
</script>

What is the issue ?

The moment i am loading the page it is showing connected (connected to Node server side also) but just after the first page load port becomes 5001 to 3000 and obviously 404 for socket.io.