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-rw-r--r--examples/echo_post/src/toppage_h.erl29
1 files changed, 29 insertions, 0 deletions
diff --git a/examples/echo_post/src/toppage_h.erl b/examples/echo_post/src/toppage_h.erl
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+++ b/examples/echo_post/src/toppage_h.erl
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+%% Feel free to use, reuse and abuse the code in this file.
+
+%% @doc POST echo handler.
+-module(toppage_h).
+
+-export([init/2]).
+
+init(Req0, Opts) ->
+ Method = cowboy_req:method(Req0),
+ HasBody = cowboy_req:has_body(Req0),
+ Req = maybe_echo(Method, HasBody, Req0),
+ {ok, Req, Opts}.
+
+maybe_echo(<<"POST">>, true, Req0) ->
+ {ok, PostVals, Req} = cowboy_req:read_urlencoded_body(Req0),
+ Echo = proplists:get_value(<<"echo">>, PostVals),
+ echo(Echo, Req);
+maybe_echo(<<"POST">>, false, Req) ->
+ cowboy_req:reply(400, [], <<"Missing body.">>, Req);
+maybe_echo(_, _, Req) ->
+ %% Method not allowed.
+ cowboy_req:reply(405, Req).
+
+echo(undefined, Req) ->
+ cowboy_req:reply(400, [], <<"Missing echo parameter.">>, Req);
+echo(Echo, Req) ->
+ cowboy_req:reply(200, #{
+ <<"content-type">> => <<"text/plain; charset=utf-8">>
+ }, Echo, Req).