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https://github.com/ninenines/cowboy.git
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293cf33702
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.
33 lines
895 B
Erlang
33 lines
895 B
Erlang
%% Feel free to use, reuse and abuse the code in this file.
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-module(websocket_handler).
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-behaviour(cowboy_http_handler).
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-behaviour(cowboy_http_websocket_handler).
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-export([init/3, handle/2, terminate/2]).
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-export([websocket_init/3, websocket_handle/3,
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websocket_info/3, websocket_terminate/3]).
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init(_Any, _Req, _Opts) ->
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{upgrade, protocol, cowboy_http_websocket}.
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handle(_Req, _State) ->
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exit(badarg).
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terminate(_Req, _State) ->
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exit(badarg).
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websocket_init(_TransportName, Req, _Opts) ->
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erlang:start_timer(1000, self(), <<"websocket_init">>),
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{ok, Req, undefined}.
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websocket_handle(Data, Req, State) ->
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{reply, Data, Req, State}.
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websocket_info({timeout, _Ref, Msg}, Req, State) ->
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erlang:start_timer(1000, self(), <<"websocket_handle">>),
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{reply, Msg, Req, State};
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websocket_info(_Info, Req, State) ->
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{ok, Req, State}.
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websocket_terminate(_Reason, _Req, _State) ->
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ok.
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