From: Scott Ferguson <ferg_at_caucho.com>
Date: Mon, 14 Jan 2013 08:36:56 -0800

I can't see how the endpoint can be notified that its connection has
timed out (or disconnected w/o a close.)

Should there be a CloseCodes.TIMEOUT (or READ/WRITE_TIMEOUT), and
CloseCodes.CONNECTION_DISCONNECT?

Or should there be some exceptions for @WebSocketError like
WebSocketTimeoutException (or WebSocketRead/WriteTimeout) and
WebSocketDisconnectException.

-- Scott