Use binary websockets

[ebidel]

https://github.com/einaros/ws is a nodejs websocket implementation that supports
the binary transport feature of websockets. SocketIO does not (socketio/socket.io#511), which basically means you need to send a dataURL() :( which makes for quite a perf. hit.

[nulltask]

Nice idea! But I want use Socket.IO's convenience functions. (e.g. namespace). I'll support for Binary transfer when Socket.IO supports it. Next Socket.IO release may be support binary transfer using entaros' implementation!

Thanks :)