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%% Copyright (c) 2011-2018, 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(ranch_acceptors_sup).
-behaviour(supervisor).
-export([start_link/2]).
-export([init/1]).
-spec start_link(ranch:ref(), module())
-> {ok, pid()}.
start_link(Ref, Transport) ->
supervisor:start_link(?MODULE, [Ref, Transport]).
init([Ref, Transport]) ->
ConnsSup = ranch_server:get_connections_sup(Ref),
TransOpts = ranch_server:get_transport_options(Ref),
NumAcceptors = maps:get(num_acceptors, TransOpts, 10),
LSocket = case maps:get(socket, TransOpts, undefined) of
undefined ->
SocketOpts = maps:get(socket_opts, TransOpts, []),
case Transport:listen(SocketOpts) of
{ok, Socket} -> Socket;
{error, Reason} -> listen_error(Ref, Transport, SocketOpts, Reason)
end;
Socket ->
Socket
end,
{ok, Addr} = Transport:sockname(LSocket),
ranch_server:set_addr(Ref, Addr),
Procs = [
{{acceptor, self(), N}, {ranch_acceptor, start_link, [
LSocket, Transport, ConnsSup
]}, permanent, brutal_kill, worker, []}
|| N <- lists:seq(1, NumAcceptors)],
{ok, {{one_for_one, 1, 5}, Procs}}.
-spec listen_error(any(), module(), any(), atom()) -> no_return().
listen_error(Ref, Transport, TransOpts0, Reason) ->
TransOpts1 = lists:keyreplace(cert, 1, TransOpts0, {cert, '...'}),
TransOpts = lists:keyreplace(key, 1, TransOpts1, {key, '...'}),
error_logger:error_msg(
"Failed to start Ranch listener ~p in ~p:listen(~999999p) for reason ~p (~s)~n",
[Ref, Transport, TransOpts, Reason, format_error(Reason)]),
exit({listen_error, Ref, Reason}).
format_error(no_cert) ->
"no certificate provided; see cert, certfile, sni_fun or sni_hosts options";
format_error(Reason) ->
inet:format_error(Reason).
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