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-rw-r--r--examples/echo_post/src/toppage_handler.erl36
1 files changed, 36 insertions, 0 deletions
diff --git a/examples/echo_post/src/toppage_handler.erl b/examples/echo_post/src/toppage_handler.erl
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+++ 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.