What to do if the websockets module?

Let's see how they are made to nodejs, read the specs. But don't forget that the latest version of the Protocol contains a vulnerability, and has been withdrawn from Firefox & Opera.

You have 2 ways. From scratch www.whatwg.org/specs/web-socket-protocol/
Or you can watch how it is done in the server-side socket.io/ file That is responsible for logic ws github.com/LearnBoost/Socket.IO-node/blob/master/lib/socket.io/transports/websocket.js

how to make from scratch — it is more less clear
I wanted to integrate in an existing WEB server
this question

Now nginx can't proxy Websocket about Apache not sure. And no modules for native support of ws I is not found.
You can do this: to raise the WebSocket backend (node.js + socket.io) to put HAProxy in front of nginx, which will forward the requests to the ws-the backend directly.
Well, here's another option in php phpDaemon instead of stack node.js + socket.io: habrahabr.ru/blogs/webdev/82140/