GET / HTTP/1.1
  Host: bfcp-ws.example.com
  Upgrade: websocket
  Connection: Upgrade
  Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==
  Origin: http://www.example.com
  Sec-WebSocket-Protocol: bfcp 
  Sec-WebSocket-Version: 13