cowboy/examples/echo_get/src/toppage_h.erl

%% Feel free to use, reuse and abuse the code in this file.

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

-export([init/2]).

init(Req0, Opts) ->
	Method = cowboy_req:method(Req0),
	#{echo := Echo} = cowboy_req:match_qs([{echo, [], undefined}], Req0),
	Req = echo(Method, Echo, Req0),
	{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).
Add a GET echo example 2012-07-21 21:46:21 +02:00			`%% Feel free to use, reuse and abuse the code in this file.`

			`%% @doc GET echo handler.`
Rename handler modules to _h 2018-09-07 13:48:43 -04:00			`-module(toppage_h).`
Add a GET echo example 2012-07-21 21:46:21 +02:00
Unify the init and terminate callbacks This set of changes is the first step to simplify the writing of handlers, by removing some extraneous callbacks and making others optional. init/3 is now init/2, its first argument being removed. rest_init/2 and rest_terminate/2 have been removed. websocket_init/3 and websocket_terminate/3 have been removed. terminate/3 is now optional. It is called regardless of the type of handler, including rest and websocket. The return value of init/2 changed. It now returns {Mod, Req, Opts} with Mod being either one of the four handler type or a custom module. It can also return extra timeout and hibernate options. The signature for sub protocols has changed, they now receive these extra timeout and hibernate options. Loop handlers are now implemented in cowboy_long_polling, and will be renamed throughout the project in a future commit. 2014-09-26 15:58:44 +03:00			`-export([init/2]).`
Add a GET echo example 2012-07-21 21:46:21 +02:00
Make reply functions return Req 2016-08-10 17:15:02 +02:00			`init(Req0, Opts) ->`
			`Method = cowboy_req:method(Req0),`
Merge branch 'master' of https://github.com/sergey-ivlev/cowboy 2016-08-11 11:38:58 +02:00			`#{echo := Echo} = cowboy_req:match_qs([{echo, [], undefined}], Req0),`
Make reply functions return Req 2016-08-10 17:15:02 +02:00			`Req = echo(Method, Echo, Req0),`
Fix small issue in echo_get example 2016-06-09 16:25:00 +02:00			`{ok, Req, Opts}.`
Add a GET echo example 2012-07-21 21:46:21 +02:00
Don't use decode_packet/3 for parsing the request-line First step in making all methods and header names binaries to get rid of many inconsistencies caused by decode_packet/3. Methods are all binary now. Note that since they are case sensitive, the usual methods become <<"GET">>, <<"POST">> and so on. 2012-09-20 06:22:51 +02:00			`echo(<<"GET">>, undefined, Req) ->`
fix echo_get example 2016-07-26 12:26:58 +03:00			`cowboy_req:reply(400, #{}, <<"Missing echo parameter.">>, Req);`
Don't use decode_packet/3 for parsing the request-line First step in making all methods and header names binaries to get rid of many inconsistencies caused by decode_packet/3. Methods are all binary now. Note that since they are case sensitive, the usual methods become <<"GET">>, <<"POST">> and so on. 2012-09-20 06:22:51 +02:00			`echo(<<"GET">>, Echo, Req) ->`
Fix echo_get example 2016-06-08 20:18:09 +02:00			`cowboy_req:reply(200, #{`
			`<<"content-type">> => <<"text/plain; charset=utf-8">>`
			`}, Echo, Req);`
Add a GET echo example 2012-07-21 21:46:21 +02:00			`echo(_, _, Req) ->`
			`%% Method not allowed.`
Rename cowboy_http_req to cowboy_req 2012-08-27 13:28:57 +02:00			`cowboy_req:reply(405, Req).`