%% Copyright (c) 2017-2019, 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(gun_SUITE).
-compile(export_all).
-compile(nowarn_export_all).
-import(ct_helper, [doc/1]).
-import(ct_helper, [name/0]).
-import(gun_test, [init_origin/3]).
all() ->
ct_helper:all(?MODULE).
%% Tests.
connect_timeout(_) ->
doc("Ensure an integer value for connect_timeout is accepted."),
{ok, Pid} = gun:open("localhost", 12345, #{connect_timeout => 1000, retry => 0}),
Ref = monitor(process, Pid),
receive
{'DOWN', Ref, process, Pid, {shutdown, _}} ->
ok
after 5000 ->
error(timeout)
end.
connect_timeout_infinity(_) ->
doc("Ensure infinity for connect_timeout is accepted."),
{ok, Pid} = gun:open("localhost", 12345, #{connect_timeout => infinity, retry => 0}),
Ref = monitor(process, Pid),
receive
{'DOWN', Ref, process, Pid, {shutdown, _}} ->
ok
after 5000 ->
error(timeout)
end.
detect_owner_gone(_) ->
{ok, ListenSocket} = gen_tcp:listen(0, [binary, {active, false}]),
{ok, {_, Port}} = inet:sockname(ListenSocket),
Self = self(),
spawn(fun() ->
{ok, ConnPid} = gun:open("localhost", Port),
Self ! {conn, ConnPid},
gun:await_up(ConnPid)
end),
{ok, _} = gen_tcp:accept(ListenSocket, 5000),
Pid = receive
{conn, C} ->
C
after 1000 ->
error(timeout)
end,
Ref = monitor(process, Pid),
receive
{'DOWN', Ref, process, Pid, normal} ->
ok
after 1000 ->
true = erlang:is_process_alive(Pid),
error(timeout)
end.
detect_owner_gone_ws(_) ->
Name = name(),
{ok, _} = cowboy:start_clear(Name, [], #{env => #{
dispatch => cowboy_router:compile([{'_', [{"/", ws_echo, []}]}])
}}),
Port = ranch:get_port(Name),
Self = self(),
spawn(fun() ->
{ok, ConnPid} = gun:open("localhost", Port),
Self ! {conn, ConnPid},
gun:await_up(ConnPid),
gun:ws_upgrade(ConnPid, "/", []),
receive
{gun_upgrade, ConnPid, _, [<<"websocket">>], _} ->
ok
after 1000 ->
error(timeout)
end
end),
Pid = receive
{conn, C} ->
C
after 1000 ->
error(timeout)
end,
Ref = monitor(process, Pid),
receive
{'DOWN', Ref, process, Pid, normal} ->
ok
after 1000 ->
true = erlang:is_process_alive(Pid),
error(timeout)
end,
cowboy:stop_listener(Name).
shutdown_reason(_) ->
doc("The last connection failure must be propagated."),
{ok, Pid} = gun:open("localhost", 12345, #{retry => 0}),
Ref = monitor(process, Pid),
receive
{'DOWN', Ref, process, Pid, {shutdown, econnrefused}} ->
ok
after 200 ->
error(timeout)
end.
info(_) ->
doc("Get info from the Gun connection."),
{ok, ListenSocket} = gen_tcp:listen(0, [binary, {active, false}]),
{ok, {_, Port}} = inet:sockname(ListenSocket),
{ok, Pid} = gun:open("localhost", Port),
{ok, _} = gen_tcp:accept(ListenSocket, 5000),
#{sock_ip := _, sock_port := _} = gun:info(Pid),
ok.
keepalive_infinity(_) ->
doc("Ensure infinity for keepalive is accepted by all protocols."),
{ok, Pid} = gun:open("localhost", 12345, #{
http_opts => #{keepalive => infinity},
http2_opts => #{keepalive => infinity},
retry => 0}),
Ref = monitor(process, Pid),
receive
{'DOWN', Ref, process, Pid, {shutdown, _}} ->
ok
after 5000 ->
error(timeout)
end.
reply_to(_) ->
doc("The reply_to option allows using a separate process for requests."),
do_reply_to(http),
do_reply_to(http2).
do_reply_to(Protocol) ->
{ok, ListenSocket} = gen_tcp:listen(0, [binary, {active, false}]),
{ok, {_, Port}} = inet:sockname(ListenSocket),
Self = self(),
{ok, Pid} = gun:open("localhost", Port, #{protocols => [Protocol]}),
{ok, ClientSocket} = gen_tcp:accept(ListenSocket, 5000),
ok = case Protocol of
http -> ok;
http2 ->
{ok, _} = gen_tcp:recv(ClientSocket, 0, 5000),
gen_tcp:send(ClientSocket, [
<<0:24, 4:8, 0:40>>, %% Empty SETTINGS frame.
<<0:24, 4:8, 1:8, 0:32>> %% SETTINGS ack.
])
end,
{ok, Protocol} = gun:await_up(Pid),
ReplyTo = spawn(fun() ->
receive Ref ->
Response = gun:await(Pid, Ref),
Self ! Response
after 1000 ->
error(timeout)
end
end),
Ref = gun:get(Pid, "/", [], #{reply_to => ReplyTo}),
{ok, _} = gen_tcp:recv(ClientSocket, 0, 5000),
ResponseData = case Protocol of
http ->
"HTTP/1.1 200 OK\r\n"
"Content-length: 12\r\n"
"\r\n"
"Hello world!";
http2 ->
%% Send a HEADERS frame with PRIORITY back.
{HeadersBlock, _} = cow_hpack:encode([
{<<":status">>, <<"200">>}
]),
Len = iolist_size(HeadersBlock),
[
<<Len:24, 1:8,
0:2, %% Undefined.
0:1, %% PRIORITY.
0:1, %% Undefined.
0:1, %% PADDED.
1:1, %% END_HEADERS.
0:1, %% Undefined.
1:1, %% END_STREAM.
0:1, 1:31>>,
HeadersBlock
]
end,
ok = gen_tcp:send(ClientSocket, ResponseData),
ReplyTo ! Ref,
receive
{response, _, _, _} ->
ok
after 1000 ->
error(timeout)
end.
retry_0(_) ->
doc("Ensure Gun gives up immediately with retry=0."),
{ok, Pid} = gun:open("localhost", 12345, #{retry => 0, retry_timeout => 500}),
Ref = monitor(process, Pid),
receive
{'DOWN', Ref, process, Pid, {shutdown, _}} ->
ok
after 200 ->
error(timeout)
end.
retry_1(_) ->
doc("Ensure Gun gives up with retry=1."),
{ok, Pid} = gun:open("localhost", 12345, #{retry => 1, retry_timeout => 500}),
Ref = monitor(process, Pid),
receive
{'DOWN', Ref, process, Pid, {shutdown, _}} ->
ok
after 700 ->
error(timeout)
end.
retry_immediately(_) ->
doc("Ensure Gun retries immediately."),
%% We have to make a first successful connection in order to test this.
{ok, _, OriginPort} = init_origin(tcp, http,
fun(_, ClientSocket, ClientTransport) ->
ClientTransport:close(ClientSocket)
end),
{ok, Pid} = gun:open("localhost", OriginPort, #{retry => 1, retry_timeout => 500}),
Ref = monitor(process, Pid),
receive
{'DOWN', Ref, process, Pid, {shutdown, _}} ->
ok
after 200 ->
error(timeout)
end.
retry_timeout(_) ->
doc("Ensure the retry_timeout value is enforced."),
{ok, Pid} = gun:open("localhost", 12345, #{retry => 1, retry_timeout => 1000}),
Ref = monitor(process, Pid),
receive
{'DOWN', Ref, process, Pid, {shutdown, _}} ->
error(shutdown_too_early)
after 800 ->
ok
end,
receive
{'DOWN', Ref, process, Pid, {shutdown, _}} ->
ok
after 400 ->
error(shutdown_too_late)
end.
transform_header_name(_) ->
doc("The transform_header_name option allows changing the case of header names."),
{ok, ListenSocket} = gen_tcp:listen(0, [binary, {active, false}]),
{ok, {_, Port}} = inet:sockname(ListenSocket),
{ok, Pid} = gun:open("localhost", Port, #{
protocols => [http],
http_opts => #{
transform_header_name => fun(<<"host">>) -> <<"HOST">>; (N) -> N end
}
}),
{ok, ClientSocket} = gen_tcp:accept(ListenSocket, 5000),
{ok, http} = gun:await_up(Pid),
_ = gun:get(Pid, "/"),
{ok, Data} = gen_tcp:recv(ClientSocket, 0, 5000),
%% We do some very crude parsing of the response headers
%% to check that the header name was properly transformed.
Lines = binary:split(Data, <<"\r\n">>, [global]),
HostLines = [L || <<"HOST: ", _/bits>> = L <- Lines],
1 = length(HostLines),
ok.
unix_socket_connect(_) ->
case os:type() of
{win32, _} ->
doc("Unix Domain Sockets are not available on Windows.");
_ ->
do_unix_socket_connect()
end.
do_unix_socket_connect() ->
doc("Ensure we can send data via a unix domain socket."),
DataDir = "/tmp/gun",
SocketPath = filename:join(DataDir, "gun.sock"),
ok = filelib:ensure_dir(SocketPath),
_ = file:delete(SocketPath),
TCPOpts = [
{ifaddr, {local, SocketPath}},
binary, {nodelay, true}, {active, false},
{packet, raw}, {reuseaddr, true}
],
{ok, LSock} = gen_tcp:listen(0, TCPOpts),
Tester = self(),
Acceptor = fun() ->
{ok, S} = gen_tcp:accept(LSock),
{ok, R} = gen_tcp:recv(S, 0),
Tester ! {recv, R},
ok = gen_tcp:close(S),
ok = gen_tcp:close(LSock)
end,
spawn(Acceptor),
{ok, Pid} = gun:open_unix(SocketPath, #{}),
_ = gun:get(Pid, "/", [{<<"host">>, <<"localhost">>}]),
receive
{recv, _} ->
ok
after 250 ->
error(timeout)
end.
