%% Copyright (c) 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(sys_SUITE).
-compile(export_all).
-compile(nowarn_export_all).
-import(ct_helper, [config/2]).
-import(ct_helper, [doc/1]).
-import(cowboy_test, [gun_open/1]).
all() ->
[{group, sys}].
groups() ->
[{sys, [parallel], ct_helper:all(?MODULE)}].
init_per_suite(Config) ->
ct:print("This test suite will produce error reports about "
"EXIT signals for unknown processes."),
ProtoOpts = #{
env => #{dispatch => init_dispatch(Config)}
},
%% Clear listener.
{ok, _} = cowboy:start_clear(clear, [{port, 0}], ProtoOpts),
ClearPort = ranch:get_port(clear),
%% TLS listener.
TLSOpts = ct_helper:get_certs_from_ets(),
{ok, _} = cowboy:start_tls(tls, TLSOpts ++ [{port, 0}], ProtoOpts),
TLSPort = ranch:get_port(tls),
[
{clear_port, ClearPort},
%% @todo Add the h2 stuff to the opts.
{tls_opts, TLSOpts},
{tls_port, TLSPort}
|Config].
end_per_suite(_) ->
ok = cowboy:stop_listener(clear),
ok = cowboy:stop_listener(tls).
init_dispatch(_) ->
cowboy_router:compile([{"[...]", [
{"/", hello_h, []},
{"/loop", long_polling_sys_h, []},
{"/ws", ws_echo, []}
]}]).
do_get_remote_pid_tcp(Socket) when is_port(Socket) ->
do_get_remote_pid_tcp(inet:sockname(Socket));
do_get_remote_pid_tcp(SockName) ->
AllPorts = [{P, erlang:port_info(P)} || P <- erlang:ports()],
[Pid] = [
proplists:get_value(connected, I)
|| {P, I} <- AllPorts,
I =/= undefined,
proplists:get_value(name, I) =:= "tcp_inet",
inet:peername(P) =:= SockName],
Pid.
-include_lib("ssl/src/ssl_connection.hrl").
do_get_remote_pid_tls(Socket) ->
%% This gives us the pid of the sslsocket process.
%% We must introspect this process in order to retrieve the connection pid.
TLSPid = do_get_remote_pid_tcp(ssl:sockname(Socket)),
{_, #state{user_application={_, UserPid}}} = sys:get_state(TLSPid),
UserPid.
do_get_parent_pid(Pid) ->
{_, ProcDict} = process_info(Pid, dictionary),
{_, [Parent|_]} = lists:keyfind('$ancestors', 1, ProcDict),
Parent.
%% proc_lib.
proc_lib_initial_call_clear(Config) ->
doc("Confirm that clear connection processes are started using proc_lib."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config), []),
timer:sleep(100),
Pid = do_get_remote_pid_tcp(Socket),
{cowboy_clear, _, _} = proc_lib:initial_call(Pid),
ok.
proc_lib_initial_call_tls(Config) ->
doc("Confirm that TLS connection processes are started using proc_lib."),
{ok, Socket} = ssl:connect("localhost", config(tls_port, Config), config(tls_opts, Config)),
timer:sleep(100),
Pid = do_get_remote_pid_tls(Socket),
{cowboy_tls, _, _} = proc_lib:initial_call(Pid),
ok.
%% System messages.
%%
%% Plain system messages are received as {system, From, Msg}.
%% The content and meaning of this message are not interpreted by
%% the receiving process module. When a system message is received,
%% function handle_system_msg/6 is called to handle the request.
%% @todo The flush/0 function in cowboy_http needs to be fixed
%% so that it doesn't eat up system messages. It should only
%% flush messages that are specific to cowboy_http.
%% @todo The cowboy_websocket module needs to have the functions
%% handler_loop and websocket_payload_loop merged into one.
bad_system_from_h1(Config) ->
doc("h1: Sending a system message with a bad From value results in a process crash."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config), [{active, false}]),
timer:sleep(100),
Pid = do_get_remote_pid_tcp(Socket),
ct_helper_error_h:ignore(Pid, gen, reply, 2),
Pid ! {system, bad, get_state},
{error, closed} = gen_tcp:recv(Socket, 0, 1000),
false = is_process_alive(Pid),
ok.
bad_system_from_h2(Config) ->
doc("h2: Sending a system message with a bad From value results in a process crash."),
{ok, Socket} = ssl:connect("localhost", config(tls_port, Config),
[{active, false}, binary, {alpn_advertised_protocols, [<<"h2">>]}]),
%% Skip the SETTINGS frame.
{ok, <<_,_,_,4,_/bits>>} = ssl:recv(Socket, 0, 1000),
timer:sleep(100),
Pid = do_get_remote_pid_tls(Socket),
ct_helper_error_h:ignore(Pid, gen, reply, 2),
Pid ! {system, bad, get_state},
{error, closed} = ssl:recv(Socket, 0, 1000),
false = is_process_alive(Pid),
ok.
bad_system_from_ws(Config) ->
doc("ws: Sending a system message with a bad From value results in a process crash."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config),
[binary, {active, false}]),
ok = gen_tcp:send(Socket,
"GET /ws HTTP/1.1\r\n"
"Host: localhost\r\n"
"Connection: Upgrade\r\n"
"Origin: http://localhost\r\n"
"Sec-WebSocket-Version: 13\r\n"
"Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==\r\n"
"Upgrade: websocket\r\n"
"\r\n"),
{ok, Handshake} = gen_tcp:recv(Socket, 0, 5000),
{ok, {http_response, {1, 1}, 101, _}, _} = erlang:decode_packet(http, Handshake, []),
timer:sleep(100),
Pid = do_get_remote_pid_tcp(Socket),
ct_helper_error_h:ignore(Pid, gen, reply, 2),
Pid ! {system, bad, get_state},
{error, closed} = gen_tcp:recv(Socket, 0, 1000),
false = is_process_alive(Pid),
ok.
bad_system_from_loop(Config) ->
doc("loop: Sending a system message with a bad From value results in a process crash."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config), [{active, false}]),
ok = gen_tcp:send(Socket,
"GET /loop HTTP/1.1\r\n"
"Host: localhost\r\n"
"\r\n"),
timer:sleep(100),
SupPid = do_get_remote_pid_tcp(Socket),
[{_, Pid, _, _}] = supervisor:which_children(SupPid),
ct_helper_error_h:ignore(Pid, gen, reply, 2),
Pid ! {system, bad, get_state},
{ok, "HTTP/1.1 500 "} = gen_tcp:recv(Socket, 13, 1000),
false = is_process_alive(Pid),
ok.
bad_system_message_h1(Config) ->
doc("h1: Sending a system message with a bad Request value results in an error."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config), []),
timer:sleep(100),
Pid = do_get_remote_pid_tcp(Socket),
Ref = make_ref(),
Pid ! {system, {self(), Ref}, hello},
receive
{Ref, {error, {unknown_system_msg, hello}}} ->
ok
after 1000 ->
error(timeout)
end.
bad_system_message_h2(Config) ->
doc("h2: Sending a system message with a bad Request value results in an error."),
{ok, Socket} = ssl:connect("localhost", config(tls_port, Config),
[{active, false}, binary, {alpn_advertised_protocols, [<<"h2">>]}]),
%% Skip the SETTINGS frame.
{ok, <<_,_,_,4,_/bits>>} = ssl:recv(Socket, 0, 1000),
timer:sleep(100),
Pid = do_get_remote_pid_tls(Socket),
Ref = make_ref(),
Pid ! {system, {self(), Ref}, hello},
receive
{Ref, {error, {unknown_system_msg, hello}}} ->
ok
after 1000 ->
error(timeout)
end.
bad_system_message_ws(Config) ->
doc("ws: Sending a system message with a bad Request value results in an error."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config),
[binary, {active, false}]),
ok = gen_tcp:send(Socket,
"GET /ws HTTP/1.1\r\n"
"Host: localhost\r\n"
"Connection: Upgrade\r\n"
"Origin: http://localhost\r\n"
"Sec-WebSocket-Version: 13\r\n"
"Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==\r\n"
"Upgrade: websocket\r\n"
"\r\n"),
{ok, Handshake} = gen_tcp:recv(Socket, 0, 5000),
{ok, {http_response, {1, 1}, 101, _}, _} = erlang:decode_packet(http, Handshake, []),
timer:sleep(100),
Pid = do_get_remote_pid_tcp(Socket),
Ref = make_ref(),
Pid ! {system, {self(), Ref}, hello},
receive
{Ref, {error, {unknown_system_msg, hello}}} ->
ok
after 1000 ->
error(timeout)
end.
bad_system_message_loop(Config) ->
doc("loop: Sending a system message with a bad Request value results in an error."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config), [{active, false}]),
ok = gen_tcp:send(Socket,
"GET /loop HTTP/1.1\r\n"
"Host: localhost\r\n"
"\r\n"),
timer:sleep(100),
SupPid = do_get_remote_pid_tcp(Socket),
[{_, Pid, _, _}] = supervisor:which_children(SupPid),
Ref = make_ref(),
Pid ! {system, {self(), Ref}, hello},
receive
{Ref, {error, {unknown_system_msg, hello}}} ->
ok
after 1000 ->
error(timeout)
end.
good_system_message_h1(Config) ->
doc("h1: System messages are handled properly."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config), []),
timer:sleep(100),
Pid = do_get_remote_pid_tcp(Socket),
Ref = make_ref(),
Pid ! {system, {self(), Ref}, get_state},
receive
{Ref, Result} when element(1, Result) =/= error ->
ok
after 1000 ->
error(timeout)
end.
good_system_message_h2(Config) ->
doc("h2: System messages are handled properly."),
{ok, Socket} = ssl:connect("localhost", config(tls_port, Config),
[{active, false}, binary, {alpn_advertised_protocols, [<<"h2">>]}]),
%% Skip the SETTINGS frame.
{ok, <<_,_,_,4,_/bits>>} = ssl:recv(Socket, 0, 1000),
timer:sleep(100),
Pid = do_get_remote_pid_tls(Socket),
Ref = make_ref(),
Pid ! {system, {self(), Ref}, get_state},
receive
{Ref, Result} when element(1, Result) =/= error ->
ok
after 1000 ->
error(timeout)
end.
good_system_message_ws(Config) ->
doc("ws: Sending a system message with a bad Request value results in an error."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config),
[binary, {active, false}]),
ok = gen_tcp:send(Socket,
"GET /ws HTTP/1.1\r\n"
"Host: localhost\r\n"
"Connection: Upgrade\r\n"
"Origin: http://localhost\r\n"
"Sec-WebSocket-Version: 13\r\n"
"Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==\r\n"
"Upgrade: websocket\r\n"
"\r\n"),
{ok, Handshake} = gen_tcp:recv(Socket, 0, 5000),
{ok, {http_response, {1, 1}, 101, _}, _} = erlang:decode_packet(http, Handshake, []),
timer:sleep(100),
Pid = do_get_remote_pid_tcp(Socket),
Ref = make_ref(),
Pid ! {system, {self(), Ref}, get_state},
receive
{Ref, Result} when element(1, Result) =/= error ->
ok
after 1000 ->
error(timeout)
end.
good_system_message_loop(Config) ->
doc("loop: Sending a system message with a bad Request value results in an error."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config), [{active, false}]),
ok = gen_tcp:send(Socket,
"GET /loop HTTP/1.1\r\n"
"Host: localhost\r\n"
"\r\n"),
timer:sleep(100),
SupPid = do_get_remote_pid_tcp(Socket),
[{_, Pid, _, _}] = supervisor:which_children(SupPid),
Ref = make_ref(),
Pid ! {system, {self(), Ref}, get_state},
receive
{Ref, Result} when element(1, Result) =/= error ->
ok
after 1000 ->
error(timeout)
end.
%% 'EXIT'.
%%
%% Shutdown messages. If the process traps exits, it must be able
%% to handle a shutdown request from its parent, the supervisor.
%% The message {'EXIT', Parent, Reason} from the parent is an order
%% to terminate. The process must terminate when this message is
%% received, normally with the same Reason as Parent.
trap_exit_parent_exit_h1(Config) ->
doc("h1: A process trapping exits must stop when receiving "
"an 'EXIT' message from its parent."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config),
[{active, false}]),
timer:sleep(100),
Pid = do_get_remote_pid_tcp(Socket),
Parent = do_get_parent_pid(Pid),
Pid ! {'EXIT', Parent, shutdown},
{error, closed} = gen_tcp:recv(Socket, 0, 1000),
false = is_process_alive(Pid),
ok.
trap_exit_parent_exit_h2(Config) ->
doc("h2: A process trapping exits must stop when receiving "
"an 'EXIT' message from its parent."),
{ok, Socket} = ssl:connect("localhost", config(tls_port, Config),
[{active, false}, binary, {alpn_advertised_protocols, [<<"h2">>]}]),
%% Skip the SETTINGS frame.
{ok, <<_,_,_,4,_/bits>>} = ssl:recv(Socket, 0, 1000),
timer:sleep(100),
Pid = do_get_remote_pid_tls(Socket),
Parent = do_get_parent_pid(Pid),
Pid ! {'EXIT', Parent, shutdown},
{error, closed} = ssl:recv(Socket, 0, 1000),
false = is_process_alive(Pid),
ok.
trap_exit_parent_exit_ws(Config) ->
doc("ws: A process trapping exits must stop when receiving "
"an 'EXIT' message from its parent."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config),
[binary, {active, false}]),
ok = gen_tcp:send(Socket,
"GET /ws HTTP/1.1\r\n"
"Host: localhost\r\n"
"Connection: Upgrade\r\n"
"Origin: http://localhost\r\n"
"Sec-WebSocket-Version: 13\r\n"
"Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==\r\n"
"Upgrade: websocket\r\n"
"\r\n"),
{ok, Handshake} = gen_tcp:recv(Socket, 0, 5000),
{ok, {http_response, {1, 1}, 101, _}, _} = erlang:decode_packet(http, Handshake, []),
timer:sleep(100),
Pid = do_get_remote_pid_tcp(Socket),
Parent = do_get_parent_pid(Pid),
Pid ! {'EXIT', Parent, shutdown},
{error, closed} = gen_tcp:recv(Socket, 0, 1000),
false = is_process_alive(Pid),
ok.
trap_exit_parent_exit_loop(Config) ->
doc("loop: A process trapping exits must stop when receiving "
"an 'EXIT' message from its parent."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config), [{active, false}]),
ok = gen_tcp:send(Socket,
"GET /loop HTTP/1.1\r\n"
"Host: localhost\r\n"
"\r\n"),
timer:sleep(100),
Parent = do_get_remote_pid_tcp(Socket),
[{_, Pid, _, _}] = supervisor:which_children(Parent),
Pid ! {'EXIT', Parent, shutdown},
%% We're getting a 500 because the process exited in an unexpected way
%% from Cowboy's point of view.
{ok, "HTTP/1.1 500 "} = gen_tcp:recv(Socket, 13, 1000),
false = is_process_alive(Pid),
ok.
trap_exit_other_exit_h1(Config) ->
doc("h1: A process trapping exits must ignore "
"'EXIT' messages from unknown processes."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config),
[{active, false}]),
timer:sleep(100),
Pid = do_get_remote_pid_tcp(Socket),
Pid ! {'EXIT', self(), shutdown},
ok = gen_tcp:send(Socket,
"GET / HTTP/1.1\r\n"
"Host: localhost\r\n"
"\r\n"),
{ok, "HTTP/1.1 200 "} = gen_tcp:recv(Socket, 13, 1000),
true = is_process_alive(Pid),
ok.
trap_exit_other_exit_h2(Config) ->
doc("h2: A process trapping exits must ignore "
"'EXIT' messages from unknown processes."),
{ok, Socket} = ssl:connect("localhost", config(tls_port, Config),
[{active, false}, binary, {alpn_advertised_protocols, [<<"h2">>]}]),
%% Do the handshake.
ok = ssl:send(Socket, ["PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n", cow_http2:settings(#{})]),
{ok, <<_,_,_,4,_/bits>>} = ssl:recv(Socket, 0, 1000),
ok = ssl:send(Socket, cow_http2:settings_ack()),
{ok, << 0:24, 4:8, 1:8, 0:32 >>} = ssl:recv(Socket, 9, 1000),
timer:sleep(100),
Pid = do_get_remote_pid_tls(Socket),
Pid ! {'EXIT', self(), shutdown},
%% Send a HEADERS frame as a request.
{HeadersBlock, _} = cow_hpack:encode([
{<<":method">>, <<"GET">>},
{<<":scheme">>, <<"https">>},
{<<":authority">>, <<"localhost">>}, %% @todo Correct port number.
{<<":path">>, <<"/">>}
]),
ok = ssl:send(Socket, cow_http2:headers(1, fin, HeadersBlock)),
%% Receive a HEADERS frame as a response.
{ok, << _:24, 1:8, _:40 >>} = ssl:recv(Socket, 9, 6000),
true = is_process_alive(Pid),
ok.
trap_exit_other_exit_ws(Config) ->
doc("ws: A process trapping exits must ignore "
"'EXIT' messages from unknown processes."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config),
[binary, {active, false}]),
ok = gen_tcp:send(Socket,
"GET /ws HTTP/1.1\r\n"
"Host: localhost\r\n"
"Connection: Upgrade\r\n"
"Origin: http://localhost\r\n"
"Sec-WebSocket-Version: 13\r\n"
"Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==\r\n"
"Upgrade: websocket\r\n"
"\r\n"),
{ok, Handshake} = gen_tcp:recv(Socket, 0, 5000),
{ok, {http_response, {1, 1}, 101, _}, _} = erlang:decode_packet(http, Handshake, []),
timer:sleep(100),
Pid = do_get_remote_pid_tcp(Socket),
Pid ! {'EXIT', self(), shutdown},
%% The process stays alive.
{error, timeout} = gen_tcp:recv(Socket, 0, 1000),
true = is_process_alive(Pid),
ok.
trap_exit_other_exit_loop(Config) ->
doc("loop: A process trapping exits must ignore "
"'EXIT' messages from unknown processes."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config), [{active, false}]),
ok = gen_tcp:send(Socket,
"GET /loop HTTP/1.1\r\n"
"Host: localhost\r\n"
"\r\n"),
timer:sleep(100),
Parent = do_get_remote_pid_tcp(Socket),
[{_, Pid, _, _}] = supervisor:which_children(Parent),
Pid ! {'EXIT', Parent, shutdown},
%% The process stays alive.
{ok, "HTTP/1.1 299 "} = gen_tcp:recv(Socket, 13, 1000),
true = is_process_alive(Pid),
ok.
%% get_modules.
%%
%% If the modules used to implement the process change dynamically
%% during runtime, the process must understand one more message.
%% An example is the gen_event processes. The message is
%% {_Label, {From, Ref}, get_modules}. The reply to this message is
%% From ! {Ref, Modules}, where Modules is a list of the currently
%% active modules in the process.
%%
%% For example:
%%
%% 1> application:start(sasl).
%% ok
%% 2> gen:call(alarm_handler, self(), get_modules).
%% {ok,[alarm_handler]}
%% 3> whereis(alarm_handler) ! {'$gen', {self(), make_ref()}, get_modules}.
%% {'$gen',{<0.61.0>,#Ref<0.2900144977.374865921.142102>},
%% get_modules}
%% 4> flush().
%% Shell got {#Ref<0.2900144977.374865921.142102>,[alarm_handler]}
%%
%% Cowboy's connection processes change dynamically: it starts with
%% cowboy_clear or cowboy_tls, then becomes cowboy_http or cowboy_http2
%% and may then become or involve cowboy_websocket. On top of that
%% it has various callback modules in the form of stream handlers.
%% @todo
%get_modules_h1(Config) ->
%get_modules_h2(Config) ->
%get_modules_ws(Config) ->
%get_modules_loop(Config) ->
%% @todo On top of this we will want to make the supervisor calls
%% in ranch_conns_sup return dynamic instead of a list of modules.
%% sys.
%% @todo sys:change_code/4,5 and Module:system_code_change/4
%sys_change_code_h1(Config) ->
%sys_change_code_h2(Config) ->
%sys_change_code_ws(Config) ->
%sys_change_code_loop(Config) ->
%% @todo sys:get_state/1,2 and Module:system_get_state/1
%sys_get_state_h1(Config) ->
%sys_get_state_h2(Config) ->
%sys_get_state_ws(Config) ->
%sys_get_state_loop(Config) ->
%% @todo sys:get_status/1,2
%sys_get_status_h1(Config) ->
%sys_get_status_h2(Config) ->
%sys_get_status_ws(Config) ->
%sys_get_status_loop(Config) ->
%% @todo sys:replace_state/2,3 and Module:replace_state/2
%sys_replace_state_h1(Config) ->
%sys_replace_state_h2(Config) ->
%sys_replace_state_ws(Config) ->
%sys_replace_state_loop(Config) ->
%% @todo sys:resume/1,2 and sys:suspend/1,2 and Module:system_continue/3
%sys_suspend_and_resume_h1(Config) ->
%sys_suspend_and_resume_h2(Config) ->
%sys_suspend_and_resume_ws(Config) ->
%sys_suspend_and_resume_loop(Config) ->
%% @todo sys:terminate/2,3 and Module:system_terminate/4
%sys_terminate_h1(Config) ->
%sys_terminate_h2(Config) ->
%sys_terminate_ws(Config) ->
%sys_terminate_loop(Config) ->
%% @todo Debugging functionality from sys.
%%
%% The functions make references to a debug structure.
%% The debug structure is a list of dbg_opt(), which is
%% an internal data type used by function handle_system_msg/6.
%% No debugging is performed if it is an empty list.
%%
%% Cowboy currently does not implement sys debugging.
%%
%% The following functions are concerned:
%%
%% * sys:install/2,3
%% * sys:log/2,3
%% * sys:log_to_file/2,3
%% * sys:no_debug/1,2
%% * sys:remove/2,3
%% * sys:statistics/2,3
%% * sys:trace/2,3
%% * call debug_options/1
%% * call get_debug/3
%% * call handle_debug/4
%% * call print_log/1
%% supervisor.
%%
%% The connection processes act as supervisors by default
%% so they must handle the supervisor messages.
%% supervisor:count_children/1.
supervisor_count_children_h1(Config) ->
doc("h1: The function supervisor:count_children/1 must work."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config),
[{active, false}]),
timer:sleep(100),
Pid = do_get_remote_pid_tcp(Socket),
%% No request was sent so there's no children.
Counts1 = supervisor:count_children(Pid),
1 = proplists:get_value(specs, Counts1),
0 = proplists:get_value(active, Counts1),
0 = proplists:get_value(supervisors, Counts1),
0 = proplists:get_value(workers, Counts1),
%% Send a request, observe that a children exists.
ok = gen_tcp:send(Socket,
"GET /loop HTTP/1.1\r\n"
"Host: localhost\r\n"
"\r\n"),
timer:sleep(100),
Counts2 = supervisor:count_children(Pid),
1 = proplists:get_value(specs, Counts2),
1 = proplists:get_value(active, Counts2),
0 = proplists:get_value(supervisors, Counts2),
1 = proplists:get_value(workers, Counts2),
ok.
supervisor_count_children_h2(Config) ->
doc("h2: The function supervisor:count_children/1 must work."),
{ok, Socket} = ssl:connect("localhost", config(tls_port, Config),
[{active, false}, binary, {alpn_advertised_protocols, [<<"h2">>]}]),
%% Do the handshake.
ok = ssl:send(Socket, ["PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n", cow_http2:settings(#{})]),
{ok, <<_,_,_,4,_/bits>>} = ssl:recv(Socket, 0, 1000),
ok = ssl:send(Socket, cow_http2:settings_ack()),
{ok, << 0:24, 4:8, 1:8, 0:32 >>} = ssl:recv(Socket, 9, 1000),
timer:sleep(100),
Pid = do_get_remote_pid_tls(Socket),
%% No request was sent so there's no children.
Counts1 = supervisor:count_children(Pid),
1 = proplists:get_value(specs, Counts1),
0 = proplists:get_value(active, Counts1),
0 = proplists:get_value(supervisors, Counts1),
0 = proplists:get_value(workers, Counts1),
%% Send a request, observe that a children exists.
{HeadersBlock, _} = cow_hpack:encode([
{<<":method">>, <<"GET">>},
{<<":scheme">>, <<"https">>},
{<<":authority">>, <<"localhost">>}, %% @todo Correct port number.
{<<":path">>, <<"/loop">>}
]),
ok = ssl:send(Socket, cow_http2:headers(1, fin, HeadersBlock)),
timer:sleep(100),
Counts2 = supervisor:count_children(Pid),
1 = proplists:get_value(specs, Counts2),
1 = proplists:get_value(active, Counts2),
0 = proplists:get_value(supervisors, Counts2),
1 = proplists:get_value(workers, Counts2),
ok.
supervisor_count_children_ws(Config) ->
doc("ws: The function supervisor:count_children/1 must work. "
"Websocket connections never have children."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config),
[binary, {active, false}]),
ok = gen_tcp:send(Socket,
"GET /ws HTTP/1.1\r\n"
"Host: localhost\r\n"
"Connection: Upgrade\r\n"
"Origin: http://localhost\r\n"
"Sec-WebSocket-Version: 13\r\n"
"Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==\r\n"
"Upgrade: websocket\r\n"
"\r\n"),
{ok, Handshake} = gen_tcp:recv(Socket, 0, 5000),
{ok, {http_response, {1, 1}, 101, _}, _} = erlang:decode_packet(http, Handshake, []),
timer:sleep(100),
Pid = do_get_remote_pid_tcp(Socket),
Counts = supervisor:count_children(Pid),
1 = proplists:get_value(specs, Counts),
0 = proplists:get_value(active, Counts),
0 = proplists:get_value(supervisors, Counts),
0 = proplists:get_value(workers, Counts),
ok.
%% supervisor:delete_child/2.
supervisor_delete_child_not_found_h1(Config) ->
doc("h1: The function supervisor:delete_child/2 must return {error, not_found}."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config),
[{active, false}]),
timer:sleep(100),
Pid = do_get_remote_pid_tcp(Socket),
%% When no children exist.
{error, not_found} = supervisor:delete_child(Pid, cowboy_http),
%% When a child exists.
ok = gen_tcp:send(Socket,
"GET /loop HTTP/1.1\r\n"
"Host: localhost\r\n"
"\r\n"),
timer:sleep(100),
{error, not_found} = supervisor:delete_child(Pid, cowboy_http),
ok.
supervisor_delete_child_not_found_h2(Config) ->
doc("h2: The function supervisor:delete_child/2 must return {error, not_found}."),
{ok, Socket} = ssl:connect("localhost", config(tls_port, Config),
[{active, false}, binary, {alpn_advertised_protocols, [<<"h2">>]}]),
%% Do the handshake.
ok = ssl:send(Socket, ["PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n", cow_http2:settings(#{})]),
{ok, <<_,_,_,4,_/bits>>} = ssl:recv(Socket, 0, 1000),
ok = ssl:send(Socket, cow_http2:settings_ack()),
{ok, << 0:24, 4:8, 1:8, 0:32 >>} = ssl:recv(Socket, 9, 1000),
timer:sleep(100),
Pid = do_get_remote_pid_tls(Socket),
%% When no children exist.
{error, not_found} = supervisor:delete_child(Pid, cowboy_http2),
%% When a child exists.
{HeadersBlock, _} = cow_hpack:encode([
{<<":method">>, <<"GET">>},
{<<":scheme">>, <<"https">>},
{<<":authority">>, <<"localhost">>}, %% @todo Correct port number.
{<<":path">>, <<"/loop">>}
]),
ok = ssl:send(Socket, cow_http2:headers(1, fin, HeadersBlock)),
timer:sleep(100),
{error, not_found} = supervisor:delete_child(Pid, cowboy_http2),
ok.
supervisor_delete_child_not_found_ws(Config) ->
doc("ws: The function supervisor:delete_child/2 must return {error, not_found}."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config),
[binary, {active, false}]),
ok = gen_tcp:send(Socket,
"GET /ws HTTP/1.1\r\n"
"Host: localhost\r\n"
"Connection: Upgrade\r\n"
"Origin: http://localhost\r\n"
"Sec-WebSocket-Version: 13\r\n"
"Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==\r\n"
"Upgrade: websocket\r\n"
"\r\n"),
{ok, Handshake} = gen_tcp:recv(Socket, 0, 5000),
{ok, {http_response, {1, 1}, 101, _}, _} = erlang:decode_packet(http, Handshake, []),
timer:sleep(100),
Pid = do_get_remote_pid_tcp(Socket),
{error, not_found} = supervisor:delete_child(Pid, cowboy_websocket),
ok.
%% supervisor:get_childspec/2.
supervisor_get_childspec_not_found_h1(Config) ->
doc("h1: The function supervisor:get_childspec/2 must return {error, not_found}."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config),
[{active, false}]),
timer:sleep(100),
Pid = do_get_remote_pid_tcp(Socket),
%% When no children exist.
{error, not_found} = supervisor:get_childspec(Pid, cowboy_http),
%% When a child exists.
ok = gen_tcp:send(Socket,
"GET /loop HTTP/1.1\r\n"
"Host: localhost\r\n"
"\r\n"),
timer:sleep(100),
{error, not_found} = supervisor:get_childspec(Pid, cowboy_http),
ok.
supervisor_get_childspec_not_found_h2(Config) ->
doc("h2: The function supervisor:get_childspec/2 must return {error, not_found}."),
{ok, Socket} = ssl:connect("localhost", config(tls_port, Config),
[{active, false}, binary, {alpn_advertised_protocols, [<<"h2">>]}]),
%% Do the handshake.
ok = ssl:send(Socket, ["PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n", cow_http2:settings(#{})]),
{ok, <<_,_,_,4,_/bits>>} = ssl:recv(Socket, 0, 1000),
ok = ssl:send(Socket, cow_http2:settings_ack()),
{ok, << 0:24, 4:8, 1:8, 0:32 >>} = ssl:recv(Socket, 9, 1000),
timer:sleep(100),
Pid = do_get_remote_pid_tls(Socket),
%% When no children exist.
{error, not_found} = supervisor:get_childspec(Pid, cowboy_http2),
%% When a child exists.
{HeadersBlock, _} = cow_hpack:encode([
{<<":method">>, <<"GET">>},
{<<":scheme">>, <<"https">>},
{<<":authority">>, <<"localhost">>}, %% @todo Correct port number.
{<<":path">>, <<"/loop">>}
]),
ok = ssl:send(Socket, cow_http2:headers(1, fin, HeadersBlock)),
timer:sleep(100),
{error, not_found} = supervisor:get_childspec(Pid, cowboy_http2),
ok.
supervisor_get_childspec_not_found_ws(Config) ->
doc("ws: The function supervisor:get_childspec/2 must return {error, not_found}."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config),
[binary, {active, false}]),
ok = gen_tcp:send(Socket,
"GET /ws HTTP/1.1\r\n"
"Host: localhost\r\n"
"Connection: Upgrade\r\n"
"Origin: http://localhost\r\n"
"Sec-WebSocket-Version: 13\r\n"
"Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==\r\n"
"Upgrade: websocket\r\n"
"\r\n"),
{ok, Handshake} = gen_tcp:recv(Socket, 0, 5000),
{ok, {http_response, {1, 1}, 101, _}, _} = erlang:decode_packet(http, Handshake, []),
timer:sleep(100),
Pid = do_get_remote_pid_tcp(Socket),
{error, not_found} = supervisor:get_childspec(Pid, cowboy_websocket),
ok.
%% supervisor:restart_child/2.
supervisor_restart_child_not_found_h1(Config) ->
doc("h1: The function supervisor:restart_child/2 must return {error, not_found}."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config),
[{active, false}]),
timer:sleep(100),
Pid = do_get_remote_pid_tcp(Socket),
%% When no children exist.
{error, not_found} = supervisor:restart_child(Pid, cowboy_http),
%% When a child exists.
ok = gen_tcp:send(Socket,
"GET /loop HTTP/1.1\r\n"
"Host: localhost\r\n"
"\r\n"),
timer:sleep(100),
{error, not_found} = supervisor:restart_child(Pid, cowboy_http),
ok.
supervisor_restart_child_not_found_h2(Config) ->
doc("h2: The function supervisor:restart_child/2 must return {error, not_found}."),
{ok, Socket} = ssl:connect("localhost", config(tls_port, Config),
[{active, false}, binary, {alpn_advertised_protocols, [<<"h2">>]}]),
%% Do the handshake.
ok = ssl:send(Socket, ["PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n", cow_http2:settings(#{})]),
{ok, <<_,_,_,4,_/bits>>} = ssl:recv(Socket, 0, 1000),
ok = ssl:send(Socket, cow_http2:settings_ack()),
{ok, << 0:24, 4:8, 1:8, 0:32 >>} = ssl:recv(Socket, 9, 1000),
timer:sleep(100),
Pid = do_get_remote_pid_tls(Socket),
%% When no children exist.
{error, not_found} = supervisor:restart_child(Pid, cowboy_http2),
%% When a child exists.
{HeadersBlock, _} = cow_hpack:encode([
{<<":method">>, <<"GET">>},
{<<":scheme">>, <<"https">>},
{<<":authority">>, <<"localhost">>}, %% @todo Correct port number.
{<<":path">>, <<"/loop">>}
]),
ok = ssl:send(Socket, cow_http2:headers(1, fin, HeadersBlock)),
timer:sleep(100),
{error, not_found} = supervisor:restart_child(Pid, cowboy_http2),
ok.
supervisor_restart_child_not_found_ws(Config) ->
doc("ws: The function supervisor:restart_child/2 must return {error, not_found}."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config),
[binary, {active, false}]),
ok = gen_tcp:send(Socket,
"GET /ws HTTP/1.1\r\n"
"Host: localhost\r\n"
"Connection: Upgrade\r\n"
"Origin: http://localhost\r\n"
"Sec-WebSocket-Version: 13\r\n"
"Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==\r\n"
"Upgrade: websocket\r\n"
"\r\n"),
{ok, Handshake} = gen_tcp:recv(Socket, 0, 5000),
{ok, {http_response, {1, 1}, 101, _}, _} = erlang:decode_packet(http, Handshake, []),
timer:sleep(100),
Pid = do_get_remote_pid_tcp(Socket),
{error, not_found} = supervisor:restart_child(Pid, cowboy_websocket),
ok.
%% supervisor:start_child/2 must return {error, start_child_disabled}
supervisor_start_child_not_found_h1(Config) ->
doc("h1: The function supervisor:start_child/2 must return {error, start_child_disabled}."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config),
[{active, false}]),
timer:sleep(100),
Pid = do_get_remote_pid_tcp(Socket),
{error, start_child_disabled} = supervisor:start_child(Pid, #{
id => error,
start => {error, error, []}
}),
ok.
supervisor_start_child_not_found_h2(Config) ->
doc("h2: The function supervisor:start_child/2 must return {error, start_child_disabled}."),
{ok, Socket} = ssl:connect("localhost", config(tls_port, Config),
[{active, false}, binary, {alpn_advertised_protocols, [<<"h2">>]}]),
%% Do the handshake.
ok = ssl:send(Socket, ["PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n", cow_http2:settings(#{})]),
{ok, <<_,_,_,4,_/bits>>} = ssl:recv(Socket, 0, 1000),
ok = ssl:send(Socket, cow_http2:settings_ack()),
{ok, << 0:24, 4:8, 1:8, 0:32 >>} = ssl:recv(Socket, 9, 1000),
timer:sleep(100),
Pid = do_get_remote_pid_tls(Socket),
{error, start_child_disabled} = supervisor:start_child(Pid, #{
id => error,
start => {error, error, []}
}),
ok.
supervisor_start_child_not_found_ws(Config) ->
doc("ws: The function supervisor:start_child/2 must return {error, start_child_disabled}."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config),
[binary, {active, false}]),
ok = gen_tcp:send(Socket,
"GET /ws HTTP/1.1\r\n"
"Host: localhost\r\n"
"Connection: Upgrade\r\n"
"Origin: http://localhost\r\n"
"Sec-WebSocket-Version: 13\r\n"
"Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==\r\n"
"Upgrade: websocket\r\n"
"\r\n"),
{ok, Handshake} = gen_tcp:recv(Socket, 0, 5000),
{ok, {http_response, {1, 1}, 101, _}, _} = erlang:decode_packet(http, Handshake, []),
timer:sleep(100),
Pid = do_get_remote_pid_tcp(Socket),
{error, start_child_disabled} = supervisor:start_child(Pid, #{
id => error,
start => {error, error, []}
}),
ok.
%% supervisor:terminate_child/2.
supervisor_terminate_child_not_found_h1(Config) ->
doc("h1: The function supervisor:terminate_child/2 must return {error, not_found}."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config),
[{active, false}]),
timer:sleep(100),
Pid = do_get_remote_pid_tcp(Socket),
%% When no children exist.
{error, not_found} = supervisor:terminate_child(Pid, cowboy_http),
%% When a child exists.
ok = gen_tcp:send(Socket,
"GET /loop HTTP/1.1\r\n"
"Host: localhost\r\n"
"\r\n"),
timer:sleep(100),
{error, not_found} = supervisor:terminate_child(Pid, cowboy_http),
ok.
supervisor_terminate_child_not_found_h2(Config) ->
doc("h2: The function supervisor:terminate_child/2 must return {error, not_found}."),
{ok, Socket} = ssl:connect("localhost", config(tls_port, Config),
[{active, false}, binary, {alpn_advertised_protocols, [<<"h2">>]}]),
%% Do the handshake.
ok = ssl:send(Socket, ["PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n", cow_http2:settings(#{})]),
{ok, <<_,_,_,4,_/bits>>} = ssl:recv(Socket, 0, 1000),
ok = ssl:send(Socket, cow_http2:settings_ack()),
{ok, << 0:24, 4:8, 1:8, 0:32 >>} = ssl:recv(Socket, 9, 1000),
timer:sleep(100),
Pid = do_get_remote_pid_tls(Socket),
%% When no children exist.
{error, not_found} = supervisor:terminate_child(Pid, cowboy_http2),
%% When a child exists.
{HeadersBlock, _} = cow_hpack:encode([
{<<":method">>, <<"GET">>},
{<<":scheme">>, <<"https">>},
{<<":authority">>, <<"localhost">>}, %% @todo Correct port number.
{<<":path">>, <<"/loop">>}
]),
ok = ssl:send(Socket, cow_http2:headers(1, fin, HeadersBlock)),
timer:sleep(100),
{error, not_found} = supervisor:terminate_child(Pid, cowboy_http2),
ok.
supervisor_terminate_child_not_found_ws(Config) ->
doc("ws: The function supervisor:terminate_child/2 must return {error, not_found}."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config),
[binary, {active, false}]),
ok = gen_tcp:send(Socket,
"GET /ws HTTP/1.1\r\n"
"Host: localhost\r\n"
"Connection: Upgrade\r\n"
"Origin: http://localhost\r\n"
"Sec-WebSocket-Version: 13\r\n"
"Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==\r\n"
"Upgrade: websocket\r\n"
"\r\n"),
{ok, Handshake} = gen_tcp:recv(Socket, 0, 5000),
{ok, {http_response, {1, 1}, 101, _}, _} = erlang:decode_packet(http, Handshake, []),
timer:sleep(100),
Pid = do_get_remote_pid_tcp(Socket),
{error, not_found} = supervisor:terminate_child(Pid, cowboy_websocket),
ok.
%% supervisor:which_children/1.
%%
%% @todo The list of modules returned is probably wrong. This will
%% need to be corrected when get_modules gets implemented.
supervisor_which_children_h1(Config) ->
doc("h1: The function supervisor:which_children/1 must work."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config),
[{active, false}]),
timer:sleep(100),
Pid = do_get_remote_pid_tcp(Socket),
%% No request was sent so there's no children.
[] = supervisor:which_children(Pid),
%% Send a request, observe that a children exists.
ok = gen_tcp:send(Socket,
"GET /loop HTTP/1.1\r\n"
"Host: localhost\r\n"
"\r\n"),
timer:sleep(100),
[{cowboy_http, Child, worker, [cowboy_http]}] = supervisor:which_children(Pid),
true = is_pid(Child),
ok.
supervisor_which_children_h2(Config) ->
doc("h2: The function supervisor:which_children/1 must work."),
{ok, Socket} = ssl:connect("localhost", config(tls_port, Config),
[{active, false}, binary, {alpn_advertised_protocols, [<<"h2">>]}]),
%% Do the handshake.
ok = ssl:send(Socket, ["PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n", cow_http2:settings(#{})]),
{ok, <<_,_,_,4,_/bits>>} = ssl:recv(Socket, 0, 1000),
ok = ssl:send(Socket, cow_http2:settings_ack()),
{ok, << 0:24, 4:8, 1:8, 0:32 >>} = ssl:recv(Socket, 9, 1000),
timer:sleep(100),
Pid = do_get_remote_pid_tls(Socket),
%% No request was sent so there's no children.
[] = supervisor:which_children(Pid),
%% Send a request, observe that a children exists.
{HeadersBlock, _} = cow_hpack:encode([
{<<":method">>, <<"GET">>},
{<<":scheme">>, <<"https">>},
{<<":authority">>, <<"localhost">>}, %% @todo Correct port number.
{<<":path">>, <<"/loop">>}
]),
ok = ssl:send(Socket, cow_http2:headers(1, fin, HeadersBlock)),
timer:sleep(100),
[{cowboy_http2, Child, worker, [cowboy_http2]}] = supervisor:which_children(Pid),
true = is_pid(Child),
ok.
supervisor_which_children_ws(Config) ->
doc("ws: The function supervisor:which_children/1 must work. "
"Websocket connections never have children."),
{ok, Socket} = gen_tcp:connect("localhost", config(clear_port, Config),
[binary, {active, false}]),
ok = gen_tcp:send(Socket,
"GET /ws HTTP/1.1\r\n"
"Host: localhost\r\n"
"Connection: Upgrade\r\n"
"Origin: http://localhost\r\n"
"Sec-WebSocket-Version: 13\r\n"
"Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==\r\n"
"Upgrade: websocket\r\n"
"\r\n"),
{ok, Handshake} = gen_tcp:recv(Socket, 0, 5000),
{ok, {http_response, {1, 1}, 101, _}, _} = erlang:decode_packet(http, Handshake, []),
timer:sleep(100),
Pid = do_get_remote_pid_tcp(Socket),
[] = supervisor:which_children(Pid),
ok.
