%% Copyright (c) 2011-2016, 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(acceptor_SUITE).
-compile(export_all).
-import(ct_helper, [doc/1]).
-import(ct_helper, [name/0]).
%% ct.
all() ->
[{group, tcp}, {group, ssl}, {group, misc}, {group, supervisor}].
groups() ->
[{tcp, [
tcp_accept_socket,
tcp_active_echo,
tcp_echo,
tcp_inherit_options,
tcp_max_connections,
tcp_max_connections_and_beyond,
tcp_max_connections_infinity,
tcp_remove_connections,
tcp_set_max_connections,
tcp_set_max_connections_clean,
tcp_upgrade,
tcp_error_eaddrinuse,
tcp_error_eacces
]}, {ssl, [
ssl_accept_error,
ssl_accept_socket,
ssl_active_echo,
ssl_echo,
ssl_sni_echo,
ssl_sni_fail,
ssl_error_eaddrinuse,
ssl_error_no_cert,
ssl_error_eacces
]}, {misc, [
misc_bad_transport,
misc_bad_transport_options,
misc_info
]}, {supervisor, [
connection_type_supervisor,
connection_type_supervisor_separate_from_connection,
supervisor_clean_child_restart,
supervisor_clean_conns_sup_restart,
supervisor_clean_restart,
supervisor_conns_alive,
supervisor_protocol_start_link_crash,
supervisor_server_recover_state
]}].
%% misc.
misc_bad_transport(_) ->
doc("Reject invalid transport modules."),
{error, badarg} = ranch:start_listener(misc_bad_transport,
bad_transport, [], echo_protocol, []),
ok.
misc_bad_transport_options(_) ->
doc("Ignore invalid transport options."),
{ok, _} = ranch:start_listener(misc_bad_transport,
ranch_tcp, [binary, {packet, 4}, <<"garbage">>, raw, backlog], echo_protocol, []),
ok.
misc_info(_) ->
doc("Information about listeners."),
%% Open a listener with a few connections.
{ok, Pid1} = ranch:start_listener({misc_info, tcp},
ranch_tcp, [{num_acceptors, 1}],
remove_conn_and_wait_protocol, [{remove, true, 2500}]),
Port1 = ranch:get_port({misc_info, tcp}),
%% Open a few more listeners with different arguments.
{ok, Pid2} = ranch:start_listener({misc_info, act},
ranch_tcp, [{num_acceptors, 2}], active_echo_protocol, {}),
Port2 = ranch:get_port({misc_info, act}),
ranch:set_max_connections({misc_info, act}, infinity),
Opts = ct_helper:get_certs_from_ets(),
{ok, Pid3} = ranch:start_listener({misc_info, ssl},
ranch_ssl, [{num_acceptors, 3}|Opts], echo_protocol, [{}]),
Port3 = ranch:get_port({misc_info, ssl}),
%% Open 5 connections, 3 removed from the count.
{ok, _} = gen_tcp:connect("localhost", Port1, [binary, {active, false}, {packet, raw}]),
{ok, _} = gen_tcp:connect("localhost", Port1, [binary, {active, false}, {packet, raw}]),
{ok, _} = gen_tcp:connect("localhost", Port1, [binary, {active, false}, {packet, raw}]),
receive after 250 -> ok end,
ranch:set_protocol_options({misc_info, tcp}, [{remove, false, 2500}]),
receive after 250 -> ok end,
{ok, _} = gen_tcp:connect("localhost", Port1, [binary, {active, false}, {packet, raw}]),
{ok, _} = gen_tcp:connect("localhost", Port1, [binary, {active, false}, {packet, raw}]),
receive after 250 -> ok end,
%% Confirm the info returned by Ranch is correct.
[
{{misc_info, act}, [
{pid, Pid2},
{ip, _},
{port, Port2},
{num_acceptors, 2},
{max_connections, infinity}, %% Option was modified.
{active_connections, 0},
{all_connections, 0},
{transport, ranch_tcp},
{transport_options, [{num_acceptors, 2}]},
{protocol, active_echo_protocol},
{protocol_options, {}}
]},
{{misc_info, ssl}, [
{pid, Pid3},
{ip, _},
{port, Port3},
{num_acceptors, 3},
{max_connections, 1024},
{active_connections, 0},
{all_connections, 0},
{transport, ranch_ssl},
{transport_options, [{num_acceptors, 3}|Opts]},
{protocol, echo_protocol},
{protocol_options, [{}]}
]},
{{misc_info, tcp}, [
{pid, Pid1},
{ip, _},
{port, Port1},
{num_acceptors, 1},
{max_connections, 1024},
{active_connections, 2},
{all_connections, 5},
{transport, ranch_tcp},
{transport_options, [{num_acceptors, 1}]},
{protocol, remove_conn_and_wait_protocol},
{protocol_options, [{remove, false, 2500}]} %% Option was modified.
]}
] = lists:sort([L || L={{misc_info, _}, _} <- ranch:info()]),
%% Get acceptors.
[_] = ranch:procs({misc_info, tcp}, acceptors),
[_, _] = ranch:procs({misc_info, act}, acceptors),
[_, _, _] = ranch:procs({misc_info, ssl}, acceptors),
%% Get connections.
[_, _, _, _, _] = ranch:procs({misc_info, tcp}, connections),
[] = ranch:procs({misc_info, act}, connections),
[] = ranch:procs({misc_info, ssl}, connections),
ok.
%% ssl.
ssl_accept_error(_) ->
doc("Acceptor must not crash if client disconnects in the middle of SSL handshake."),
Name = name(),
Opts = ct_helper:get_certs_from_ets(),
{ok, ListenerSup} = ranch:start_listener(Name,
ranch_ssl, [{num_acceptors, 1}|Opts], echo_protocol, []),
Port = ranch:get_port(Name),
ListenerSupChildren = supervisor:which_children(ListenerSup),
{_, AcceptorsSup, _, _} = lists:keyfind(ranch_acceptors_sup, 1, ListenerSupChildren),
[{{acceptor, _, _}, AcceptorPid, _, _}] = supervisor:which_children(AcceptorsSup),
true = is_process_alive(AcceptorPid),
{ok, Socket} = gen_tcp:connect("localhost", Port, [binary, {active, false}, {packet, raw}]),
ok = gen_tcp:close(Socket),
receive after 500 -> ok end,
true = is_process_alive(AcceptorPid),
ok = ranch:stop_listener(Name).
ssl_accept_socket(_) ->
doc("Ensure that listener can use an externally opened SSL listen socket."),
Name = name(),
Opts = ct_helper:get_certs_from_ets(),
{ok, S} = ssl:listen(0, [binary, {active, false}, {packet, raw}, {reuseaddr, true}|Opts]),
{ok, _} = ranch:start_listener(Name, ranch_ssl, [{socket, S}], echo_protocol, []),
Port = ranch:get_port(Name),
{ok, Socket} = ssl:connect("localhost", Port, [binary, {active, false}, {packet, raw}]),
ok = ssl:send(Socket, <<"TCP Ranch is working!">>),
{ok, <<"TCP Ranch is working!">>} = ssl:recv(Socket, 21, 1000),
ok = ranch:stop_listener(Name),
{error, closed} = ssl:recv(Socket, 0, 1000),
%% Make sure the listener stopped.
{'EXIT', _} = begin catch ranch:get_port(Name) end,
ok.
ssl_active_echo(_) ->
doc("Ensure that active mode works with SSL transport."),
Name = name(),
Opts = ct_helper:get_certs_from_ets(),
{ok, _} = ranch:start_listener(Name, ranch_ssl, Opts, active_echo_protocol, []),
Port = ranch:get_port(Name),
{ok, Socket} = ssl:connect("localhost", Port, [binary, {active, false}, {packet, raw}]),
ok = ssl:send(Socket, <<"SSL Ranch is working!">>),
{ok, <<"SSL Ranch is working!">>} = ssl:recv(Socket, 21, 1000),
ok = ranch:stop_listener(Name),
{error, closed} = ssl:recv(Socket, 0, 1000),
%% Make sure the listener stopped.
{'EXIT', _} = begin catch ranch:get_port(Name) end,
ok.
ssl_echo(_) ->
doc("Ensure that passive mode works with SSL transport."),
Name = name(),
Opts = ct_helper:get_certs_from_ets(),
{ok, _} = ranch:start_listener(Name, ranch_ssl, Opts, echo_protocol, []),
Port = ranch:get_port(Name),
{ok, Socket} = ssl:connect("localhost", Port, [binary, {active, false}, {packet, raw}]),
ok = ssl:send(Socket, <<"SSL Ranch is working!">>),
{ok, <<"SSL Ranch is working!">>} = ssl:recv(Socket, 21, 1000),
ok = ranch:stop_listener(Name),
{error, closed} = ssl:recv(Socket, 0, 1000),
%% Make sure the listener stopped.
{'EXIT', _} = begin catch ranch:get_port(Name) end,
ok.
ssl_sni_echo(_) ->
case application:get_key(ssl, vsn) of
{ok, Vsn} when Vsn >= "7.0" ->
do_ssl_sni_echo();
_ ->
{skip, "No SNI support."}
end.
do_ssl_sni_echo() ->
doc("Ensure that SNI works with SSL transport."),
Name = name(),
Opts = ct_helper:get_certs_from_ets(),
{ok, _} = ranch:start_listener(Name, ranch_ssl, [{sni_hosts, [{"localhost", Opts}]}], echo_protocol, []),
Port = ranch:get_port(Name),
{ok, Socket} = ssl:connect("localhost", Port, [binary, {active, false}, {packet, raw}]),
ok = ssl:send(Socket, <<"SSL Ranch is working!">>),
{ok, <<"SSL Ranch is working!">>} = ssl:recv(Socket, 21, 1000),
ok = ranch:stop_listener(Name),
{error, closed} = ssl:recv(Socket, 0, 1000),
%% Make sure the listener stopped.
{'EXIT', _} = begin catch ranch:get_port(Name) end,
ok.
ssl_sni_fail(_) ->
case application:get_key(ssl, vsn) of
{ok, Vsn} when Vsn >= "7.0" ->
do_ssl_sni_fail();
_ ->
{skip, "No SNI support."}
end.
do_ssl_sni_fail() ->
doc("Ensure that connection fails when host is not in SNI list."),
Name = name(),
Opts = ct_helper:get_certs_from_ets(),
{ok, _} = ranch:start_listener(Name, ranch_ssl, [{sni_hosts, [{"pouet", Opts}]}], echo_protocol, []),
Port = ranch:get_port(Name),
{error, _} = ssl:connect("localhost", Port, [binary, {active, false}, {packet, raw}]),
ok = ranch:stop_listener(Name),
%% Make sure the listener stopped.
{'EXIT', _} = begin catch ranch:get_port(Name) end,
ok.
ssl_error_eaddrinuse(_) ->
doc("Ensure that failure due to an eaddrinuse returns a compact readable error."),
Name = name(),
Opts = ct_helper:get_certs_from_ets(),
{ok, _} = ranch:start_listener(Name, ranch_ssl, Opts, active_echo_protocol, []),
Port = ranch:get_port(Name),
{error, eaddrinuse} = ranch:start_listener({Name, fails},
ranch_ssl, [{port, Port}|Opts], active_echo_protocol, []),
ok = ranch:stop_listener(Name),
%% Make sure the listener stopped.
{'EXIT', _} = begin catch ranch:get_port(Name) end,
ok.
ssl_error_no_cert(_) ->
doc("Ensure that failure due to missing certificate returns a compact readable error."),
{error, no_cert} = ranch:start_listener(name(), ranch_ssl, [], active_echo_protocol, []),
ok.
ssl_error_eacces(_) ->
doc("Ensure that failure due to an eacces returns a compact readable error."),
Name = name(),
Opts = ct_helper:get_certs_from_ets(),
{error, eacces} = ranch:start_listener(Name,
ranch_ssl, [{port, 283}|Opts], active_echo_protocol, []),
ok.
%% tcp.
tcp_accept_socket(_) ->
doc("Ensure that listener can use an externally opened TCP listen socket."),
Name = name(),
{ok, S} = gen_tcp:listen(0, [binary, {active, false}, {packet, raw}, {reuseaddr, true}]),
{ok, _} = ranch:start_listener(Name, ranch_tcp, [{socket, S}], echo_protocol, []),
Port = ranch:get_port(Name),
{ok, Socket} = gen_tcp:connect("localhost", Port, [binary, {active, false}, {packet, raw}]),
ok = gen_tcp:send(Socket, <<"TCP Ranch is working!">>),
{ok, <<"TCP Ranch is working!">>} = gen_tcp:recv(Socket, 21, 1000),
ok = ranch:stop_listener(Name),
{error, closed} = gen_tcp:recv(Socket, 0, 1000),
%% Make sure the listener stopped.
{'EXIT', _} = begin catch ranch:get_port(Name) end,
ok.
tcp_active_echo(_) ->
doc("Ensure that active mode works with TCP transport."),
Name = name(),
{ok, _} = ranch:start_listener(Name, ranch_tcp, [], active_echo_protocol, []),
Port = ranch:get_port(Name),
{ok, Socket} = gen_tcp:connect("localhost", Port, [binary, {active, false}, {packet, raw}]),
ok = gen_tcp:send(Socket, <<"TCP Ranch is working!">>),
{ok, <<"TCP Ranch is working!">>} = gen_tcp:recv(Socket, 21, 1000),
ok = ranch:stop_listener(Name),
{error, closed} = gen_tcp:recv(Socket, 0, 1000),
%% Make sure the listener stopped.
{'EXIT', _} = begin catch ranch:get_port(Name) end,
ok.
tcp_echo(_) ->
doc("Ensure that passive mode works with TCP transport."),
Name = name(),
{ok, _} = ranch:start_listener(Name, ranch_tcp, [], echo_protocol, []),
Port = ranch:get_port(Name),
{ok, Socket} = gen_tcp:connect("localhost", Port, [binary, {active, false}, {packet, raw}]),
ok = gen_tcp:send(Socket, <<"TCP Ranch is working!">>),
{ok, <<"TCP Ranch is working!">>} = gen_tcp:recv(Socket, 21, 1000),
ok = ranch:stop_listener(Name),
{error, closed} = gen_tcp:recv(Socket, 0, 1000),
%% Make sure the listener stopped.
{'EXIT', _} = begin catch ranch:get_port(Name) end,
ok.
tcp_inherit_options(_) ->
doc("Ensure TCP options are inherited in the protocol."),
Name = name(),
Opts = [{nodelay, false}, {send_timeout_close, false}],
{ok, _} = ranch:start_listener(Name, ranch_tcp, Opts, check_tcp_options, [{pid, self()} | Opts]),
Port = ranch:get_port(Name),
{ok, Socket} = gen_tcp:connect("localhost", Port, [binary, {active, true}, {packet, raw}]),
receive checked -> ok after 1000 -> error(timeout) end,
ok = gen_tcp:close(Socket),
ok = ranch:stop_listener(Name).
tcp_max_connections(_) ->
doc("Ensure the max_connections option actually limits connections."),
Name = name(),
{ok, _} = ranch:start_listener(Name,
ranch_tcp, [{max_connections, 10}, {num_acceptors, 1}],
notify_and_wait_protocol, [{msg, connected}, {pid, self()}]),
Port = ranch:get_port(Name),
ok = connect_loop(Port, 11, 150),
10 = ranch_server:count_connections(Name),
10 = receive_loop(connected, 400),
1 = receive_loop(connected, 1000),
ok = ranch:stop_listener(Name).
tcp_max_connections_and_beyond(_) ->
doc("Ensure the max_connections option works when connections are removed from the count."),
Name = name(),
{ok, _} = ranch:start_listener(Name,
ranch_tcp, [{max_connections, 10}, {num_acceptors, 1}],
remove_conn_and_wait_protocol, [{remove, true, 2500}]),
Port = ranch:get_port(Name),
ok = connect_loop(Port, 10, 0),
receive after 250 -> ok end,
0 = ranch_server:count_connections(Name),
10 = length(supervisor:which_children(ranch_server:get_connections_sup(Name))),
Counts = supervisor:count_children(ranch_server:get_connections_sup(Name)),
{_, 1} = lists:keyfind(specs, 1, Counts),
{_, 0} = lists:keyfind(supervisors, 1, Counts),
{_, 10} = lists:keyfind(active, 1, Counts),
{_, 10} = lists:keyfind(workers, 1, Counts),
ranch:set_protocol_options(Name, [{remove, false, 2500}]),
receive after 250 -> ok end,
ok = connect_loop(Port, 10, 0),
receive after 250 -> ok end,
10 = ranch_server:count_connections(Name),
20 = length(supervisor:which_children(ranch_server:get_connections_sup(Name))),
Counts2 = supervisor:count_children(ranch_server:get_connections_sup(Name)),
{_, 20} = lists:keyfind(active, 1, Counts2),
{_, 20} = lists:keyfind(workers, 1, Counts2),
ok = ranch:stop_listener(Name).
tcp_max_connections_infinity(_) ->
doc("Set the max_connections option from 10 to infinity and back to 10."),
Name = name(),
{ok, _} = ranch:start_listener(Name,
ranch_tcp, [{max_connections, 10}, {num_acceptors, 1}],
notify_and_wait_protocol, [{msg, connected}, {pid, self()}]),
Port = ranch:get_port(Name),
ok = connect_loop(Port, 20, 0),
10 = ranch_server:count_connections(Name),
10 = receive_loop(connected, 1000),
10 = ranch_server:count_connections(Name),
10 = ranch:get_max_connections(Name),
ranch:set_max_connections(Name, infinity),
receive after 250 -> ok end,
20 = ranch_server:count_connections(Name),
infinity = ranch:get_max_connections(Name),
ranch:set_max_connections(Name, 10),
20 = ranch_server:count_connections(Name),
10 = receive_loop(connected, 1000),
ok = ranch:stop_listener(Name).
tcp_remove_connections(_) ->
doc("Ensure that removed connections are only removed once."),
Name = name(),
{ok, _} = ranch:start_listener(Name,
ranch_tcp, [],
remove_conn_and_wait_protocol, [{remove, true, 0}]),
Port = ranch:get_port(Name),
ok = connect_loop(Port, 10, 0),
receive after 250 -> ok end,
0 = ranch_server:count_connections(Name),
ok = ranch:stop_listener(Name).
tcp_set_max_connections(_) ->
doc("Ensure that changing the max_connections option to a larger value allows for more connections."),
Name = name(),
{ok, _} = ranch:start_listener(Name,
ranch_tcp, [{max_connections, 10}, {num_acceptors, 1}],
notify_and_wait_protocol, [{msg, connected}, {pid, self()}]),
Port = ranch:get_port(Name),
ok = connect_loop(Port, 20, 0),
10 = ranch_server:count_connections(Name),
10 = receive_loop(connected, 1000),
10 = ranch:get_max_connections(Name),
ranch:set_max_connections(Name, 20),
10 = receive_loop(connected, 1000),
20 = ranch:get_max_connections(Name),
ok = ranch:stop_listener(Name).
tcp_set_max_connections_clean(_) ->
doc("Ensure that setting max_connections does not crash any process."),
Name = name(),
{ok, ListSupPid} = ranch:start_listener(Name, ranch_tcp,
[{max_connections, 4}],
notify_and_wait_protocol, [{msg, connected}, {pid, self()}]),
Children = supervisor:which_children(ListSupPid),
{_, AccSupPid, _, _} = lists:keyfind(ranch_acceptors_sup, 1, Children),
1 = erlang:trace(ListSupPid, true, [procs]),
1 = erlang:trace(AccSupPid, true, [procs]),
Port = ranch:get_port(Name),
N = 20,
ok = connect_loop(Port, N*5, 0),
%% Randomly set max_connections.
[spawn(ranch, set_max_connections, [Name, Max]) ||
Max <- lists:flatten(lists:duplicate(N, [6, 4, 8, infinity]))],
receive
{trace, _, spawn, _, _} ->
error(dirty_set_max_connections)
after
2000 -> ok
end,
_ = erlang:trace(all, false, [all]),
ok = clean_traces(),
ok = ranch:stop_listener(Name).
tcp_upgrade(_) ->
doc("Ensure that protocol options can be updated."),
Name = name(),
{ok, _} = ranch:start_listener(Name,
ranch_tcp, [],
notify_and_wait_protocol, [{msg, connected}, {pid, self()}]),
Port = ranch:get_port(Name),
ok = connect_loop(Port, 1, 0),
receive connected -> ok after 1000 -> error(timeout) end,
ranch:set_protocol_options(Name, [{msg, upgraded}, {pid, self()}]),
ok = connect_loop(Port, 1, 0),
receive upgraded -> ok after 1000 -> error(timeout) end,
ok = ranch:stop_listener(Name).
tcp_error_eaddrinuse(_) ->
doc("Ensure that failure due to an eaddrinuse returns a compact readable error."),
Name = name(),
{ok, _} = ranch:start_listener(Name, ranch_tcp, [], active_echo_protocol, []),
Port = ranch:get_port(Name),
{error, eaddrinuse} = ranch:start_listener({Name, fails},
ranch_tcp, [{port, Port}], active_echo_protocol, []),
ok = ranch:stop_listener(Name),
%% Make sure the listener stopped.
{'EXIT', _} = begin catch ranch:get_port(Name) end,
ok.
tcp_error_eacces(_) ->
doc("Ensure that failure due to an eacces returns a compact readable error."),
Name = name(),
{error, eacces} = ranch:start_listener(Name,
ranch_tcp, [{port, 283}], active_echo_protocol, []),
ok.
%% Supervisor tests
connection_type_supervisor(_) ->
doc("The supervisor connection type must be reflected in the specifications."),
Name = name(),
{ok, _} = ranch:start_listener(Name,
ranch_tcp, [{connection_type, supervisor}],
echo_protocol, []),
Port = ranch:get_port(Name),
{ok, Socket} = gen_tcp:connect("localhost", Port, [binary, {active, false}, {packet, raw}]),
ok = gen_tcp:send(Socket, <<"TCP Ranch is working!">>),
{ok, <<"TCP Ranch is working!">>} = gen_tcp:recv(Socket, 21, 1000),
ConnsSup = ranch_server:get_connections_sup(Name),
[{echo_protocol, _, supervisor, [echo_protocol]}] = supervisor:which_children(ConnsSup),
ok = ranch:stop_listener(Name),
{error, closed} = gen_tcp:recv(Socket, 0, 1000),
%% Make sure the listener stopped.
{'EXIT', _} = begin catch ranch:get_port(Name) end,
ok.
connection_type_supervisor_separate_from_connection(_) ->
doc("The supervisor connection type allows separate supervised and connection processes."),
Name = name(),
{ok, _} = ranch:start_listener(Name,
ranch_tcp, [{connection_type, supervisor}],
supervisor_separate, []),
Port = ranch:get_port(Name),
{ok, Socket} = gen_tcp:connect("localhost", Port, [binary, {active, false}, {packet, raw}]),
ok = gen_tcp:send(Socket, <<"TCP Ranch is working!">>),
{ok, <<"TCP Ranch is working!">>} = gen_tcp:recv(Socket, 21, 1000),
ConnsSup = ranch_server:get_connections_sup(Name),
[{supervisor_separate, _, supervisor, [supervisor_separate]}] = supervisor:which_children(ConnsSup),
ok = ranch:stop_listener(Name),
{error, closed} = gen_tcp:recv(Socket, 0, 1000),
%% Make sure the listener stopped.
{'EXIT', _} = begin catch ranch:get_port(Name) end,
ok.
supervisor_clean_child_restart(_) ->
doc("Verify that only the relevant parts of the supervision tree restarted "
"when the listening socket is closed."),
Name = name(),
%% Trace socket allocations.
_ = erlang:trace(new, true, [call]),
1 = erlang:trace_pattern({ranch_tcp, listen, 1},
[{'_', [], [{return_trace}]}], [global]),
{ok, Pid} = ranch:start_listener(Name,
ranch_tcp, [{num_acceptors, 1}], echo_protocol, []),
%% Trace supervisor spawns.
1 = erlang:trace(Pid, true, [procs, set_on_spawn]),
ConnsSup = ranch_server:get_connections_sup(Name),
%% Manually shut the listening socket down.
LSocket = receive
{trace, _, return_from, {ranch_tcp, listen, 1}, {ok, Socket}} ->
Socket
after 0 ->
error(lsocket_unknown)
end,
ok = gen_tcp:close(LSocket),
receive after 1000 -> ok end,
%% Verify that supervisor and its first two children are alive.
true = is_process_alive(Pid),
true = is_process_alive(ConnsSup),
%% Check that acceptors_sup is restarted properly.
AccSupPid = receive {trace, Pid, spawn, Pid1, _} -> Pid1 end,
receive {trace, AccSupPid, spawn, _, _} -> ok end,
%% No more traces then.
receive
{trace, _, spawn, _, _} -> error(invalid_restart)
after 1000 -> ok end,
%% Verify that children still registered right.
ConnsSup = ranch_server:get_connections_sup(Name),
_ = erlang:trace_pattern({ranch_tcp, listen, 1}, false, []),
_ = erlang:trace(all, false, [all]),
ok = clean_traces(),
ok = ranch:stop_listener(Name).
supervisor_clean_conns_sup_restart(_) ->
doc("Verify that a conns_sup can not register with the same name as an already "
"registered ranch_conns_sup that is still alive. Make sure this does not crash "
"the ranch_server process."),
Name = name(),
{ok, _} = ranch:start_listener(Name,
ranch_tcp, [], echo_protocol, []),
Server = erlang:whereis(ranch_server),
ServerMonRef = erlang:monitor(process, Server),
%% Exit because Name already registered and is alive.
{'EXIT', _} = (catch ranch_server:set_connections_sup(Name, self())),
receive
{'DOWN', ServerMonRef, process, Server, _} ->
error(ranch_server_down)
after
1000 ->
ok
end,
ok = ranch:stop_listener(Name).
supervisor_clean_restart(_) ->
doc("Verify that killing ranch_conns_sup does not crash everything "
"and that it restarts properly."),
Name = name(),
NumAcc = 4,
{ok, Pid} = ranch:start_listener(Name,
ranch_tcp, [{num_acceptors, NumAcc}], echo_protocol, []),
%% Trace supervisor spawns.
1 = erlang:trace(Pid, true, [procs, set_on_spawn]),
ConnsSup0 = ranch_server:get_connections_sup(Name),
erlang:exit(ConnsSup0, kill),
receive after 1000 -> ok end,
%% Verify that supervisor is alive
true = is_process_alive(Pid),
%% ...but children are dead.
false = is_process_alive(ConnsSup0),
%% Receive traces from newly started children
ConnsSup = receive {trace, Pid, spawn, Pid2, _} -> Pid2 end,
AccSupPid = receive {trace, Pid, spawn, Pid3, _} -> Pid3 end,
%% ...and its acceptors.
[receive {trace, AccSupPid, spawn, _Pid, _} -> ok end ||
_ <- lists:seq(1, NumAcc)],
%% No more traces then.
receive
{trace, EPid, spawn, _, _} when EPid == Pid; EPid == AccSupPid ->
error(invalid_restart)
after 1000 -> ok end,
%% Verify that new children registered themselves properly.
ConnsSup = ranch_server:get_connections_sup(Name),
_ = erlang:trace(all, false, [all]),
ok = clean_traces(),
ok = ranch:stop_listener(Name).
supervisor_conns_alive(_) ->
doc("Ensure that active connections stay open when the listening socket gets closed."),
Name = name(),
_ = erlang:trace(new, true, [call]),
1 = erlang:trace_pattern({ranch_tcp, listen, 1},
[{'_', [], [{return_trace}]}], [global]),
{ok, _} = ranch:start_listener(Name,
ranch_tcp, [],
remove_conn_and_wait_protocol, [{remove, false, 2500}]),
%% Get the listener socket
LSocket = receive
{trace, _, return_from, {ranch_tcp, listen, 1}, {ok, S}} ->
S
after 500 ->
error(lsocket_unknown)
end,
TcpPort = ranch:get_port(Name),
{ok, Socket} = gen_tcp:connect("localhost", TcpPort,
[binary, {active, true}, {packet, raw}]),
receive after 500 -> ok end,
%% Shut the socket down
ok = gen_tcp:close(LSocket),
%% Assert that client is still viable.
receive {tcp_closed, _} -> error(closed) after 1500 -> ok end,
ok = gen_tcp:send(Socket, <<"poke">>),
receive {tcp_closed, _} -> ok end,
_ = erlang:trace(all, false, [all]),
ok = clean_traces(),
ok = ranch:stop_listener(Name).
supervisor_protocol_start_link_crash(_) ->
doc("Ensure a protocol start crash does not kill all connections."),
Name = name(),
{ok, _} = ranch:start_listener(Name, ranch_tcp, [], crash_protocol, []),
ConnsSup = ranch_server:get_connections_sup(Name),
Port = ranch:get_port(Name),
{ok, _} = gen_tcp:connect("localhost", Port, [binary, {active, true}, {packet, raw}]),
receive after 500 -> ok end,
ConnsSup = ranch_server:get_connections_sup(Name),
ok = ranch:stop_listener(Name).
supervisor_server_recover_state(_) ->
doc("Ensure that when ranch_server crashes and restarts, it recovers "
"its state and continues monitoring the same processes."),
Name = name(),
_ = erlang:trace(new, true, [call]),
1 = erlang:trace_pattern({ranch_server, init, 1},
[{'_', [], [{return_trace}]}], [global]),
{ok, _} = ranch:start_listener(Name, ranch_tcp, [], echo_protocol, []),
ConnsSup = ranch_server:get_connections_sup(Name),
ServerPid = erlang:whereis(ranch_server),
{monitors, Monitors} = erlang:process_info(ServerPid, monitors),
erlang:exit(ServerPid, kill),
receive
{trace, ServerPid2, return_from, {ranch_server, init, 1}, _Result} ->
{monitors, Monitors2} = erlang:process_info(ServerPid2, monitors),
%% Check that ranch_server is monitoring the same processes.
true = (lists:usort(Monitors) == lists:usort(Monitors2))
after
1000 ->
error(timeout)
end,
ConnsSup = ranch_server:get_connections_sup(Name),
ok = ranch:stop_listener(Name),
%% Check ranch_server has removed the ranch_conns_sup.
{'EXIT', {badarg, _}} = (catch ranch_server:get_connections_sup(Name)),
_ = erlang:trace(all, false, [all]),
ok = clean_traces().
%% Utility functions.
connect_loop(_, 0, _) ->
ok;
connect_loop(Port, N, Sleep) ->
{ok, _} = gen_tcp:connect("localhost", Port,
[binary, {active, false}, {packet, raw}]),
receive after Sleep -> ok end,
connect_loop(Port, N - 1, Sleep).
receive_loop(Message, Timeout) ->
receive_loop(Message, Timeout, 0).
receive_loop(Message, Timeout, N) ->
receive Message ->
receive_loop(Message, Timeout, N + 1)
after Timeout ->
N
end.
clean_traces() ->
receive
{trace, _, _, _} ->
clean_traces();
{trace, _, _, _, _} ->
clean_traces()
after 0 ->
ok
end.
