function Flashsocket () {
    io.Transport.websocket.apply(this, arguments);
  }
The FlashSocket transport. This is a API wrapper for the HTML5 WebSocket
specification. It uses a .swf file to communicate with the server. If you want
to serve the .swf file from a other server than where the Socket.IO script is
coming from you need to use the insecure version of the .swf. More information
about this can be found on the github page.

@constructor
@extends {io.Transport.websocket}
@api public