%% Copyright (c) 2016-2017, Loïc Hoguin %% %% 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) -> _ = case maps:get(connection_type, Opts, supervisor) of worker -> ok; supervisor -> process_flag(trap_exit, true) end, Protocol:init(Parent, Ref, Socket, Transport, Opts).