Perl library that implements WebSocket protocol

 Client/server WebSocket message and frame parser/constructor.
 Protocol::WebSocket does not provide a WebSocket server or client, but is
 made for using in http servers or clients to provide WebSocket support.
 .
 Protocol::WebSocket supports the following WebSocket protocol versions:
  * draft-ietf-hybi-17 (latest)
  * draft-ietf-hybi-10
  * draft-ietf-hybi-00 (with HAProxy support)
  * draft-hixie-75
 .
 By default the latest version is used. The WebSocket version is detected
 automatically on the server side. On the client side you have set a version
 attribute to an appropriate value.