There are other types of frames than application
data.
Also a message can be composed of multiple frames.
Change-Id: Ia97349553b61ae05fa78854222808eaa43386c0e
Since a socket client can push data into
the socket in a different thread than the one
polling (indeed that's the only possible scenario),
the write buffer must be protected by a lock.
On the other hand, the read buffer is always
invoked from a single thread, the polling. So
it is perfectly safe without locks.
Change-Id: Id0b6a01f8e96124a299810f0aacab9cecd1ff979
Because the socket can be freed while a separate
thread is sending data via the handler, we must
have a locked reference to the socket instance
in the handler.
Change-Id: Iefad3fc2b147f96b8d538d9edd7cac3fce25b5bf
We need to flush writes to socket as soon as
ready to either send or, if buffers are full,
to poll for write.
With WebSocket we do this after writing a frame.
Change-Id: I1bc276e678375a84079e69624414a16271f25351
