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%% Copyright (c) 2016-2017, Loïc Hoguin <[email protected]>
%%
%% Permission to use, copy, modify, and/or distribute this software for any
%% purpose with or without fee is hereby granted, provided that the above
%% copyright notice and this permission notice appear in all copies.
%%
%% THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
%% WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
%% MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
%% ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
%% WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
%% ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
%% OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-module(cowboy_clear).
-behavior(ranch_protocol).
-export([start_link/4]).
-export([proc_lib_hack/5]).
-spec start_link(ranch:ref(), inet:socket(), module(), cowboy:opts()) -> {ok, pid()}.
start_link(Ref, Socket, Transport, Opts) ->
Pid = proc_lib:spawn_link(?MODULE, proc_lib_hack, [self(), Ref, Socket, Transport, Opts]),
{ok, Pid}.
-spec proc_lib_hack(pid(), ranch:ref(), inet:socket(), module(), cowboy:opts()) -> ok.
proc_lib_hack(Parent, Ref, Socket, Transport, Opts) ->
try
init(Parent, Ref, Socket, Transport, Opts)
catch
_:normal -> exit(normal);
_:shutdown -> exit(shutdown);
_:Reason = {shutdown, _} -> exit(Reason);
_:Reason -> exit({Reason, erlang:get_stacktrace()})
end.
-spec init(pid(), ranch:ref(), inet:socket(), module(), cowboy:opts()) -> ok.
init(Parent, Ref, Socket, Transport, Opts) ->
ok = ranch:accept_ack(Ref),
init(Parent, Ref, Socket, Transport, Opts, cowboy_http).
init(Parent, Ref, Socket, Transport, Opts, Protocol) ->
{Handler, Type} = maps:get(stream_handler, Opts, {cowboy_stream_h, supervisor}),
_ = case Type of
worker -> ok;
supervisor -> process_flag(trap_exit, true)
end,
Protocol:init(Parent, Ref, Socket, Transport, Opts, Handler).
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