用wamp连接到本地websocket

I am trying to do a tutorial on websockets, however it seems I can't even connect to the websocket.

I am using wamp 2.5 and I have php_sockets extension enabled.

In the video, the guy's url for the homepage is: youtube:app:8000, and mine is l/chat (I turned localhost into l a while ago), and it opens up normally.

Then, he sets up the server like so:

var socket = new WebSocket("ws://127.0.0.1:2000");

And since it's just the first step with no more code, when he goes to the homepage (youtube:app:8000) he gets this message in chrome:

Error during websocket handshake

Whereas I get:

Error in connection establishment

When setting my new websocket, I tried all 3 following options, but the error is always the same (I never get to the handshake).

var socket = new WebSocket("ws://l:2000");
var socket = new WebSocket("ws://localhost:2000");
var socket = new WebSocket("ws://127.0.0.1:2000");

What can be the problem?