aboutsummaryrefslogtreecommitdiffstats
path: root/examples/echo_get/src/toppage_handler.erl
blob: 4c7f595020e8ad6e22476ee62022548c4f8a002e (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
%% Feel free to use, reuse and abuse the code in this file.

%% @doc GET echo handler.
-module(toppage_handler).

-export([init/2]).

init(Req, Opts) ->
	Method = cowboy_req:method(Req),
	#{echo := Echo} = cowboy_req:match_qs([echo], Req),
	echo(Method, Echo, Req),
	{ok, Req, Opts}.

echo(<<"GET">>, undefined, Req) ->
	cowboy_req:reply(400, [], <<"Missing echo parameter.">>, Req);
echo(<<"GET">>, Echo, Req) ->
	cowboy_req:reply(200, #{
		<<"content-type">> => <<"text/plain; charset=utf-8">>
	}, Echo, Req);
echo(_, _, Req) ->
	%% Method not allowed.
	cowboy_req:reply(405, Req).