Also sends a message 'shoot' that can be received by the protocol
to make sure Cowboy has had enough time to fully initialize the
socket. This message should be received before any socket-related
operations are performed.
WebSocket request connections are now moved from the pool 'default'
to the pool 'websocket', meaning we can have a lot of running
WebSockets despite having a low 'max_connections' setting.
Improves the readability of websocket handler code by having
two functions: websocket_handle/3 handles the packets received
from the socket, removing the tuple construct that was otherwise
needed, so only websocket_handle(Data, Req, State) is needed now;
websocket_info/3 handles the messages that the websocket handler
process received, as websocket_info(Info, Req, State).
Both functions return values are handled identically by Cowboy
so nothing changes on that end.
This ensures that an error thrown in handler_terminate/4 will be
shown after the error from handler_call/6, in the expected order.
As we already call WebSocketHandler:terminate/3, this should
fix issue #23.
Browsers get mad that the returned location address is not the same
as what they sent, since the :(80|443) is stripped.
Add a simple eunit test due to existing ct websockets tests not
covering this case.
Return {ok, Req, State, hibernate}
or {reply, Data, Req, State, hibernate} to hibernate the websocket
process and save up memory and CPU. You should hibernate processes
that will receive few messages. So probably most of them.
The server now does a single recv (or more, but only if needed)
which is then sent to erlang:decode_packet/3 multiple times. Since
most requests are smaller than the default MTU on many platforms,
we benefit from this greatly.
In the case of requests with a body, the server usually read at
least part of the body on the first recv. This is bufferized
properly and used when later retrieving the body.
In the case of pipelined requests, we can end up reading many
requests in a single recv, which are then handled properly using
only the buffer containing the received data.
