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%% Copyright (c) 2011-2018, 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.
-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),
Logger = maps:get(logger, TransOpts, error_logger),
LSocket = case maps:get(socket, TransOpts, undefined) of
undefined ->
SocketOpts = maps:get(socket_opts, TransOpts, []),
%% We temporarily put the logger in the process dictionary
%% so that it can be used from ranch:filter_options. The
%% interface as it currently is does not allow passing it
%% down otherwise.
put(logger, Logger),
case Transport:listen(SocketOpts) of
{ok, Socket} ->
erase(logger),
Socket;
{error, Reason} ->
listen_error(Ref, Transport, SocketOpts, Reason, Logger)
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, Logger, ConnsSup
]}, permanent, brutal_kill, worker, []}
|| N <- lists:seq(1, NumAcceptors)],
{ok, {{one_for_one, 1, 5}, Procs}}.
-spec listen_error(any(), module(), any(), atom(), module()) -> no_return().
listen_error(Ref, Transport, SocketOpts0, Reason, Logger) ->
SocketOpts1 = [{cert, '...'}|proplists:delete(cert, SocketOpts0)],
SocketOpts2 = [{key, '...'}|proplists:delete(key, SocketOpts1)],
SocketOpts = [{cacerts, '...'}|proplists:delete(cacerts, SocketOpts2)],
ranch:log(error,
"Failed to start Ranch listener ~p in ~p:listen(~999999p) for reason ~p (~s)~n",
[Ref, Transport, SocketOpts, Reason, format_error(Reason)], Logger),
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).