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https://github.com/ninenines/cowboy.git
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647e95aed1
This should have been done a *long* time ago, back when I initially
added Websocket support. This is the first part of two in improving
loop handler support with regards to socket closure.
Reason may include: {normal, shutdown} for the most normal shutdown,
{normal, timeout} for a loop handler timeout shutdown, or {error, _}
if an error occured.
36 lines
959 B
Erlang
36 lines
959 B
Erlang
%% Feel free to use, reuse and abuse the code in this file.
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%% @doc POST echo handler.
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-module(toppage_handler).
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-export([init/3]).
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-export([handle/2]).
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-export([terminate/3]).
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init(_Transport, Req, []) ->
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{ok, Req, undefined}.
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handle(Req, State) ->
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{Method, Req2} = cowboy_req:method(Req),
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HasBody = cowboy_req:has_body(Req2),
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{ok, Req3} = maybe_echo(Method, HasBody, Req2),
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{ok, Req3, State}.
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maybe_echo(<<"POST">>, true, Req) ->
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{ok, PostVals, Req2} = cowboy_req:body_qs(Req),
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Echo = proplists:get_value(<<"echo">>, PostVals),
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echo(Echo, Req2);
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maybe_echo(<<"POST">>, false, Req) ->
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cowboy_req:reply(400, [], <<"Missing body.">>, Req);
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maybe_echo(_, _, Req) ->
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%% Method not allowed.
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cowboy_req:reply(405, Req).
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echo(undefined, Req) ->
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cowboy_req:reply(400, [], <<"Missing echo parameter.">>, Req);
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echo(Echo, Req) ->
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cowboy_req:reply(200,
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[{<<"content-encoding">>, <<"utf-8">>}], Echo, Req).
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terminate(_Reason, _Req, _State) ->
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ok.
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