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Add more frame types available in websocket replies

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We can now reply empty close, ping and pong frames, or close
frames with a payload.

This means that we can send a frame and then close the connection
in a single operation.

If a close packet is sent, the connection is closed immediately,
even if there was frames that remained to be sent. Cowboy will
silently drop any extra frames in the list given as a reply.
This commit is contained in:
Loïc Hoguin 2012-12-02 21:37:24 +01:00
parent 3e0e507311
commit 067958abd2
4 changed files with 140 additions and 27 deletions
Download patch file Download diff file Expand all files Collapse all files

9
src/cowboy_websocket_handler.erl
View file

@ -50,7 +50,6 @@
-type opts() :: any().
-type state() :: any().
-type payload() :: {text | binary | ping | pong, binary()}.
-type terminate_reason() :: {normal, closed}
| {normal, timeout}
| {error, closed}
@ -67,15 +66,15 @@
-callback websocket_handle({text | binary | ping | pong, binary()}, Req, State)
-> {ok, Req, State}
| {ok, Req, State, hibernate}
| {reply, payload() | [payload()], Req, State}
| {reply, payload() | [payload()], Req, State, hibernate}
| {reply, cowboy_websocket:frame() | [cowboy_websocket:frame()], Req, State}
| {reply, cowboy_websocket:frame() | [cowboy_websocket:frame()], Req, State, hibernate}
| {shutdown, Req, State}
when Req::cowboy_req:req(), State::state().
-callback websocket_info(any(), Req, State)
-> {ok, Req, State}
| {ok, Req, State, hibernate}
| {reply, payload() | [payload()], Req, State}
| {reply, payload() | [payload()], Req, State, hibernate}
| {reply, cowboy_websocket:frame() | [cowboy_websocket:frame()], Req, State}
| {reply, cowboy_websocket:frame() | [cowboy_websocket:frame()], Req, State, hibernate}
| {shutdown, Req, State}
when Req::cowboy_req:req(), State::state().
-callback websocket_terminate(terminate_reason(), cowboy_req:req(), state())