diff options
Diffstat (limited to 'doc/src/guide')
| -rw-r--r-- | doc/src/guide/ws_handlers.asciidoc | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/doc/src/guide/ws_handlers.asciidoc b/doc/src/guide/ws_handlers.asciidoc index b280fd8..1411ab6 100644 --- a/doc/src/guide/ws_handlers.asciidoc +++ b/doc/src/guide/ws_handlers.asciidoc @@ -69,14 +69,14 @@ init(Req, State) -> %% Register process here... {cowboy_websocket, Req, State}. -websocket_info(post_init, Req, State) -> +websocket_info(post_init, State) -> %% Perform post_init initialization here... - {ok, Req, State}. + {ok, State}. ---- === Handling frames from the client -Cowboy will call `websocket_handle/3` whenever a text, binary, +Cowboy will call `websocket_handle/2` whenever a text, binary, ping or pong frame arrives from the client. Note that in the case of ping and pong frames, no action is expected as Cowboy automatically replies to ping frames. @@ -89,15 +89,15 @@ ignores all others. [source,erlang] ---- -websocket_handle(Frame = {text, _}, Req, State) -> - {reply, Frame, Req, State}; -websocket_handle(_Frame, Req, State) -> - {ok, Req, State}. +websocket_handle(Frame = {text, _}, State) -> + {reply, Frame, State}; +websocket_handle(_Frame, State) -> + {ok, State}. ---- === Handling Erlang messages -Cowboy will call `websocket_info/3` whenever an Erlang message +Cowboy will call `websocket_info/2` whenever an Erlang message arrives. The handler can decide to send frames to the socket, stop @@ -108,10 +108,10 @@ and ignores all others. [source,erlang] ---- -websocket_info({log, Text}, Req, State) -> - {reply, {text, Text}, Req, State}; -websocket_info(_Info, Req, State) -> - {ok, Req, State}. +websocket_info({log, Text}, State) -> + {reply, {text, Text}, State}; +websocket_info(_Info, State) -> + {ok, State}. ---- === Sending frames to the socket @@ -126,13 +126,13 @@ tuple. [source,erlang] ---- -websocket_info(hello_world, Req, State) -> +websocket_info(hello_world, State) -> {reply, [ {text, "Hello"}, {text, <<"world!">>}, {binary, <<0:8000>>} - ], Req, State}; -%% More websocket_info/3 clauses here... + ], State}; +%% More websocket_info/2 clauses here... ---- Note that the payload for text and binary frames is of type |