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%% Copyright (c) 2011-2012, Loïc Hoguin <essen@ninenines.eu>
%%
%% 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.
%% @private
-module(cowboy_acceptor).
-export([start_link/6]). %% API.
-export([acceptor/7]). %% Internal.
%% API.
-spec start_link(inet:socket(), module(), module(), any(),
pid(), pid()) -> {ok, pid()}.
start_link(LSocket, Transport, Protocol, Opts,
ListenerPid, ReqsSup) ->
Pid = spawn_link(?MODULE, acceptor,
[LSocket, Transport, Protocol, Opts, 1, ListenerPid, ReqsSup]),
{ok, Pid}.
%% Internal.
-spec acceptor(inet:socket(), module(), module(), any(),
non_neg_integer(), pid(), pid()) -> no_return().
acceptor(LSocket, Transport, Protocol, Opts, OptsVsn, ListenerPid, ReqsSup) ->
Res = case Transport:accept(LSocket, 2000) of
{ok, CSocket} ->
{ok, Pid} = supervisor:start_child(ReqsSup,
[ListenerPid, CSocket, Transport, Protocol, Opts]),
Transport:controlling_process(CSocket, Pid),
cowboy_listener:add_connection(ListenerPid,
default, Pid, OptsVsn);
{error, timeout} ->
cowboy_listener:check_upgrades(ListenerPid, OptsVsn);
{error, _Reason} ->
%% @todo Probably do something here. If the socket was closed,
%% we may want to try and listen again on the port?
ok
end,
case Res of
ok ->
?MODULE:acceptor(LSocket, Transport, Protocol,
Opts, OptsVsn, ListenerPid, ReqsSup);
{upgrade, Opts2, OptsVsn2} ->
?MODULE:acceptor(LSocket, Transport, Protocol,
Opts2, OptsVsn2, ListenerPid, ReqsSup)
end.
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