From 73c07376bb1371afd3a10c4dc135912cfe16a247 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lo=C3=AFc=20Hoguin?= <essen@ninenines.eu>
Date: Sat, 21 Jul 2012 22:19:13 +0200
Subject: Add a POST echo example

---
 examples/echo_post/src/toppage_handler.erl | 36 ++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 examples/echo_post/src/toppage_handler.erl

(limited to 'examples/echo_post/src/toppage_handler.erl')

diff --git a/examples/echo_post/src/toppage_handler.erl b/examples/echo_post/src/toppage_handler.erl
new file mode 100644
index 0000000..aed26e6
--- /dev/null
+++ b/examples/echo_post/src/toppage_handler.erl
@@ -0,0 +1,36 @@
+%% Feel free to use, reuse and abuse the code in this file.
+
+%% @doc POST echo handler.
+-module(toppage_handler).
+
+-export([init/3]).
+-export([handle/2]).
+-export([terminate/2]).
+
+init(_Transport, Req, []) ->
+	{ok, Req, undefined}.
+
+handle(Req, State) ->
+	{Method, Req2} = cowboy_http_req:method(Req),
+	{HasBody, Req3} = cowboy_http_req:has_body(Req2),
+	{ok, Req4} = maybe_echo(Method, HasBody, Req3),
+	{ok, Req4, State}.
+
+maybe_echo('POST', true, Req) ->
+	{PostVals, Req2} = cowboy_http_req:body_qs(Req),
+	Echo = proplists:get_value(<<"echo">>, PostVals),
+	echo(Echo, Req2);
+maybe_echo('POST', false, Req) ->
+	cowboy_http_req:reply(400, [], <<"Missing body.">>, Req);
+maybe_echo(_, _, Req) ->
+	%% Method not allowed.
+	cowboy_http_req:reply(405, Req).
+
+echo(undefined, Req) ->
+	cowboy_http_req:reply(400, [], <<"Missing echo parameter.">>, Req);
+echo(Echo, Req) ->
+	cowboy_http_req:reply(200,
+		[{<<"Content-Encoding">>, <<"utf-8">>}], Echo, Req).
+
+terminate(_Req, _State) ->
+	ok.
-- 
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