%% This module behaves differently depending on a specific header.
-module(stream_handler_h).
-behavior(cowboy_stream).
-export([init/3]).
-export([data/4]).
-export([info/3]).
-export([terminate/3]).
-export([early_error/5]).
init(StreamID, Req, Opts) ->
%% @todo Vary behavior depending on x-test-case.
Pid = list_to_pid(binary_to_list(cowboy_req:header(<<"x-test-pid">>, Req))),
Pid ! {Pid, self(), init, StreamID, Req, Opts},
{[{headers, 200, #{}}], Pid}.
data(StreamID, IsFin, Data, State=Pid) ->
Pid ! {Pid, self(), data, StreamID, IsFin, Data, State},
{[], State}.
info(StreamID, Info, State=Pid) ->
Pid ! {Pid, self(), info, StreamID, Info, State},
{[], State}.
terminate(StreamID, Reason, State=Pid) ->
Pid ! {Pid, self(), terminate, StreamID, Reason, State},
ok.
%% This clause can only test for early errors that reached the required header.
early_error(StreamID, Reason, PartialReq, Resp, Opts) ->
Pid = list_to_pid(binary_to_list(cowboy_req:header(<<"x-test-pid">>, PartialReq))),
Pid ! {Pid, self(), early_error, StreamID, Reason, PartialReq, Resp, Opts},
Resp.
