%% Copyright (c) 2011-2017, Loïc Hoguin %% %% 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(ws_SUITE). -compile(export_all). -import(ct_helper, [config/2]). -import(ct_helper, [doc/1]). %% ct. all() -> [{group, autobahn}, {group, ws}]. groups() -> BaseTests = ct_helper:all(?MODULE) -- [autobahn_fuzzingclient], [{autobahn, [], [autobahn_fuzzingclient]}, {ws, [parallel], BaseTests}]. init_per_group(Name = autobahn, Config) -> %% Some systems have it named pip2. Out = os:cmd("pip show autobahntestsuite ; pip2 show autobahntestsuite"), case string:str(Out, "autobahntestsuite") of 0 -> ct:print("Skipping the autobahn group because the " "Autobahn Test Suite is not installed.~nTo install it, " "please follow the instructions on this page:~n~n " "http://autobahn.ws/testsuite/installation.html"), {skip, "Autobahn Test Suite not installed."}; _ -> {ok, _} = cowboy:start_clear(Name, [{port, 33080}], #{ env => #{dispatch => init_dispatch()} }), Config end; init_per_group(Name = ws, Config) -> cowboy_test:init_http(Name, #{ env => #{dispatch => init_dispatch()} }, Config). end_per_group(Listener, _Config) -> cowboy:stop_listener(Listener). %% Dispatch configuration. init_dispatch() -> cowboy_router:compile([ {"localhost", [ {"/ws_echo", ws_echo, []}, {"/ws_echo_timer", ws_echo_timer, []}, {"/ws_init", ws_init_h, []}, {"/ws_init_shutdown", ws_init_shutdown, []}, {"/ws_send_many", ws_send_many, [ {sequence, [ {text, <<"one">>}, {text, <<"two">>}, {text, <<"seven!">>}]} ]}, {"/ws_send_close", ws_send_many, [ {sequence, [ {text, <<"send">>}, close, {text, <<"won't be received">>}]} ]}, {"/ws_send_close_payload", ws_send_many, [ {sequence, [ {text, <<"send">>}, {close, 1001, <<"some text!">>}, {text, <<"won't be received">>}]} ]}, {"/ws_subprotocol", ws_subprotocol, []}, {"/terminate", ws_terminate_h, []}, {"/ws_timeout_hibernate", ws_timeout_hibernate, []}, {"/ws_timeout_cancel", ws_timeout_cancel, []} ]} ]). %% Tests. autobahn_fuzzingclient(Config) -> doc("Autobahn test suite for the Websocket protocol."), Self = self(), spawn_link(fun() -> start_port(Config, Self) end), receive autobahn_exit -> ok end, ct:log("

Full report

~n"), Report = config(priv_dir, Config) ++ "reports/servers/index.html", ct:print("Autobahn Test Suite report: file://~s~n", [Report]), {ok, HTML} = file:read_file(Report), case length(binary:matches(HTML, <<"case_failed">>)) > 2 of true -> error(failed); false -> ok end. start_port(Config, Pid) -> Port = open_port({spawn, "wstest -m fuzzingclient -s " ++ config(data_dir, Config) ++ "client.json"}, [{line, 10000}, {cd, config(priv_dir, Config)}, binary, eof]), receive_infinity(Port, Pid). receive_infinity(Port, Pid) -> receive {Port, {data, {eol, Line}}} -> io:format(user, "~s~n", [Line]), receive_infinity(Port, Pid); {Port, eof} -> Pid ! autobahn_exit end. ws0(Config) -> doc("Websocket version 0 (hixie-76 draft) is no longer supported."), {ok, Socket} = gen_tcp:connect("localhost", config(port, Config), [binary, {active, false}]), ok = gen_tcp:send(Socket, "GET /ws_echo_timer HTTP/1.1\r\n" "Host: localhost\r\n" "Connection: Upgrade\r\n" "Upgrade: WebSocket\r\n" "Origin: http://localhost\r\n" "Sec-Websocket-Key1: Y\" 4 1Lj!957b8@0H756!i\r\n" "Sec-Websocket-Key2: 1711 M;4\\74 80<6\r\n" "\r\n"), {ok, Handshake} = gen_tcp:recv(Socket, 0, 6000), {ok, {http_response, {1, 1}, 400, _}, _} = erlang:decode_packet(http, Handshake, []), ok. ws7(Config) -> doc("Websocket version 7 (draft) is supported."), {ok, Socket} = gen_tcp:connect("localhost", config(port, Config), [binary, {active, false}]), ok = gen_tcp:send(Socket, [ "GET /ws_echo_timer HTTP/1.1\r\n" "Host: localhost\r\n" "Connection: Upgrade\r\n" "Upgrade: websocket\r\n" "Sec-WebSocket-Origin: http://localhost\r\n" "Sec-WebSocket-Version: 7\r\n" "Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==\r\n" "\r\n"]), {ok, Handshake} = gen_tcp:recv(Socket, 0, 6000), {ok, {http_response, {1, 1}, 101, _}, Rest} = erlang:decode_packet(http, Handshake, []), [Headers, <<>>] = do_decode_headers(erlang:decode_packet(httph, Rest, []), []), {_, "Upgrade"} = lists:keyfind('Connection', 1, Headers), {_, "websocket"} = lists:keyfind('Upgrade', 1, Headers), {_, "s3pPLMBiTxaQ9kYGzzhZRbK+xOo="} = lists:keyfind("sec-websocket-accept", 1, Headers), do_ws_version(Socket). ws8(Config) -> doc("Websocket version 8 (draft) is supported."), {ok, Socket} = gen_tcp:connect("localhost", config(port, Config), [binary, {active, false}]), ok = gen_tcp:send(Socket, [ "GET /ws_echo_timer HTTP/1.1\r\n" "Host: localhost\r\n" "Connection: Upgrade\r\n" "Upgrade: websocket\r\n" "Sec-WebSocket-Origin: http://localhost\r\n" "Sec-WebSocket-Version: 8\r\n" "Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==\r\n" "\r\n"]), {ok, Handshake} = gen_tcp:recv(Socket, 0, 6000), {ok, {http_response, {1, 1}, 101, _}, Rest} = erlang:decode_packet(http, Handshake, []), [Headers, <<>>] = do_decode_headers(erlang:decode_packet(httph, Rest, []), []), {_, "Upgrade"} = lists:keyfind('Connection', 1, Headers), {_, "websocket"} = lists:keyfind('Upgrade', 1, Headers), {_, "s3pPLMBiTxaQ9kYGzzhZRbK+xOo="} = lists:keyfind("sec-websocket-accept", 1, Headers), do_ws_version(Socket). ws13(Config) -> doc("Websocket version 13 (RFC) is supported."), {ok, Socket, _} = do_handshake("/ws_echo_timer", Config), do_ws_version(Socket). do_ws_version(Socket) -> %% Masked text hello echoed back clear by the server. Mask = 16#37fa213d, MaskedHello = do_mask(<<"Hello">>, Mask, <<>>), ok = gen_tcp:send(Socket, << 1:1, 0:3, 1:4, 1:1, 5:7, Mask:32, MaskedHello/binary >>), {ok, << 1:1, 0:3, 1:4, 0:1, 5:7, "Hello" >>} = gen_tcp:recv(Socket, 0, 6000), %% Empty binary frame echoed back. ok = gen_tcp:send(Socket, << 1:1, 0:3, 2:4, 1:1, 0:7, 0:32 >>), {ok, << 1:1, 0:3, 2:4, 0:8 >>} = gen_tcp:recv(Socket, 0, 6000), %% Masked binary hello echoed back clear by the server. ok = gen_tcp:send(Socket, << 1:1, 0:3, 2:4, 1:1, 5:7, Mask:32, MaskedHello/binary >>), {ok, << 1:1, 0:3, 2:4, 0:1, 5:7, "Hello" >>} = gen_tcp:recv(Socket, 0, 6000), %% Frames sent on timer by the handler. {ok, << 1:1, 0:3, 1:4, 0:1, 14:7, "websocket_init" >>} = gen_tcp:recv(Socket, 0, 6000), {ok, << 1:1, 0:3, 1:4, 0:1, 16:7, "websocket_handle" >>} = gen_tcp:recv(Socket, 0, 6000), {ok, << 1:1, 0:3, 1:4, 0:1, 16:7, "websocket_handle" >>} = gen_tcp:recv(Socket, 0, 6000), {ok, << 1:1, 0:3, 1:4, 0:1, 16:7, "websocket_handle" >>} = gen_tcp:recv(Socket, 0, 6000), %% Client-initiated ping/pong. ok = gen_tcp:send(Socket, << 1:1, 0:3, 9:4, 1:1, 0:7, 0:32 >>), {ok, << 1:1, 0:3, 10:4, 0:8 >>} = gen_tcp:recv(Socket, 0, 6000), %% Client-initiated close. ok = gen_tcp:send(Socket, << 1:1, 0:3, 8:4, 1:1, 0:7, 0:32 >>), {ok, << 1:1, 0:3, 8:4, 0:8 >>} = gen_tcp:recv(Socket, 0, 6000), {error, closed} = gen_tcp:recv(Socket, 0, 6000), ok. ws_init_return_ok(Config) -> doc("Handler does nothing."), {ok, Socket, _} = do_handshake("/ws_init?ok", Config), %% The handler does nothing; nothing should happen here. {error, timeout} = gen_tcp:recv(Socket, 0, 1000), ok. ws_init_return_ok_hibernate(Config) -> doc("Handler does nothing; hibernates."), {ok, Socket, _} = do_handshake("/ws_init?ok_hibernate", Config), %% The handler does nothing; nothing should happen here. {error, timeout} = gen_tcp:recv(Socket, 0, 1000), ok. ws_init_return_reply(Config) -> doc("Handler sends a text frame just after the handshake."), {ok, Socket, _} = do_handshake("/ws_init?reply", Config), {ok, << 1:1, 0:3, 1:4, 0:1, 5:7, "Hello" >>} = gen_tcp:recv(Socket, 0, 6000), ok. ws_init_return_reply_hibernate(Config) -> doc("Handler sends a text frame just after the handshake and then hibernates."), {ok, Socket, _} = do_handshake("/ws_init?reply_hibernate", Config), {ok, << 1:1, 0:3, 1:4, 0:1, 5:7, "Hello" >>} = gen_tcp:recv(Socket, 0, 6000), ok. ws_init_return_reply_close(Config) -> doc("Handler closes immediately after the handshake."), {ok, Socket, _} = do_handshake("/ws_init?reply_close", Config), {ok, << 1:1, 0:3, 8:4, 0:8 >>} = gen_tcp:recv(Socket, 0, 6000), {error, closed} = gen_tcp:recv(Socket, 0, 6000), ok. ws_init_return_reply_close_hibernate(Config) -> doc("Handler closes immediately after the handshake, then attempts to hibernate."), {ok, Socket, _} = do_handshake("/ws_init?reply_close_hibernate", Config), {ok, << 1:1, 0:3, 8:4, 0:8 >>} = gen_tcp:recv(Socket, 0, 6000), {error, closed} = gen_tcp:recv(Socket, 0, 6000), ok. ws_init_return_reply_many(Config) -> doc("Handler sends many frames just after the handshake."), {ok, Socket, _} = do_handshake("/ws_init?reply_many", Config), %% We catch all frames at once and check them directly. {ok, << 1:1, 0:3, 1:4, 0:1, 5:7, "Hello", 1:1, 0:3, 2:4, 0:1, 5:7, "World" >>} = gen_tcp:recv(Socket, 14, 6000), ok. ws_init_return_reply_many_hibernate(Config) -> doc("Handler sends many frames just after the handshake and then hibernates."), {ok, Socket, _} = do_handshake("/ws_init?reply_many_hibernate", Config), %% We catch all frames at once and check them directly. {ok, << 1:1, 0:3, 1:4, 0:1, 5:7, "Hello", 1:1, 0:3, 2:4, 0:1, 5:7, "World" >>} = gen_tcp:recv(Socket, 14, 6000), ok. ws_init_return_reply_many_close(Config) -> doc("Handler sends many frames including a close frame just after the handshake."), {ok, Socket, _} = do_handshake("/ws_init?reply_many_close", Config), %% We catch all frames at once and check them directly. {ok, << 1:1, 0:3, 1:4, 0:1, 5:7, "Hello", 1:1, 0:3, 8:4, 0:8 >>} = gen_tcp:recv(Socket, 9, 6000), ok. ws_init_return_reply_many_close_hibernate(Config) -> doc("Handler sends many frames including a close frame just after the handshake and then hibernates."), {ok, Socket, _} = do_handshake("/ws_init?reply_many_close_hibernate", Config), %% We catch all frames at once and check them directly. {ok, << 1:1, 0:3, 1:4, 0:1, 5:7, "Hello", 1:1, 0:3, 8:4, 0:8 >>} = gen_tcp:recv(Socket, 9, 6000), ok. ws_init_return_stop(Config) -> doc("Handler closes immediately after the handshake."), {ok, Socket, _} = do_handshake("/ws_init?stop", Config), {ok, << 1:1, 0:3, 8:4, 0:1, 2:7, 1000:16 >>} = gen_tcp:recv(Socket, 0, 6000), {error, closed} = gen_tcp:recv(Socket, 0, 6000), ok. ws_init_shutdown_before_handshake(Config) -> doc("Handler stops before Websocket handshake."), {ok, Socket} = gen_tcp:connect("localhost", config(port, Config), [binary, {active, false}]), ok = gen_tcp:send(Socket, [ "GET /ws_init_shutdown 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, 6000), {ok, {http_response, {1, 1}, 403, _}, _Rest} = erlang:decode_packet(http, Handshake, []), ok. ws_send_close(Config) -> doc("Server-initiated close frame ends the connection."), {ok, Socket, _} = do_handshake("/ws_send_close", Config), %% We catch all frames at once and check them directly. {ok, << 1:1, 0:3, 1:4, 0:1, 4:7, "send", 1:1, 0:3, 8:4, 0:8 >>} = gen_tcp:recv(Socket, 8, 6000), {error, closed} = gen_tcp:recv(Socket, 0, 6000), ok. ws_send_close_payload(Config) -> doc("Server-initiated close frame with payload ends the connection."), {ok, Socket, _} = do_handshake("/ws_send_close_payload", Config), %% We catch all frames at once and check them directly. {ok, << 1:1, 0:3, 1:4, 0:1, 4:7, "send", 1:1, 0:3, 8:4, 0:1, 12:7, 1001:16, "some text!" >>} = gen_tcp:recv(Socket, 20, 6000), {error, closed} = gen_tcp:recv(Socket, 0, 6000), ok. ws_send_many(Config) -> doc("Server sends many frames in a single reply."), {ok, Socket, _} = do_handshake("/ws_send_many", Config), %% We catch all frames at once and check them directly. {ok, << 1:1, 0:3, 1:4, 0:1, 3:7, "one", 1:1, 0:3, 1:4, 0:1, 3:7, "two", 1:1, 0:3, 1:4, 0:1, 6:7, "seven!" >>} = gen_tcp:recv(Socket, 18, 6000), ok. ws_single_bytes(Config) -> doc("Client sends a text frame one byte at a time."), {ok, Socket, _} = do_handshake("/ws_echo", Config), %% We sleep between sends to make sure only one byte is sent. ok = gen_tcp:send(Socket, << 16#81 >>), timer:sleep(100), ok = gen_tcp:send(Socket, << 16#85 >>), timer:sleep(100), ok = gen_tcp:send(Socket, << 16#37 >>), timer:sleep(100), ok = gen_tcp:send(Socket, << 16#fa >>), timer:sleep(100), ok = gen_tcp:send(Socket, << 16#21 >>), timer:sleep(100), ok = gen_tcp:send(Socket, << 16#3d >>), timer:sleep(100), ok = gen_tcp:send(Socket, << 16#7f >>), timer:sleep(100), ok = gen_tcp:send(Socket, << 16#9f >>), timer:sleep(100), ok = gen_tcp:send(Socket, << 16#4d >>), timer:sleep(100), ok = gen_tcp:send(Socket, << 16#51 >>), timer:sleep(100), ok = gen_tcp:send(Socket, << 16#58 >>), {ok, << 1:1, 0:3, 1:4, 0:1, 5:7, "Hello" >>} = gen_tcp:recv(Socket, 0, 6000), ok. ws_subprotocol(Config) -> doc("Websocket sub-protocol negotiation."), {ok, _, Headers} = do_handshake("/ws_subprotocol", "Sec-WebSocket-Protocol: foo, bar\r\n", Config), {_, "foo"} = lists:keyfind("sec-websocket-protocol", 1, Headers), ok. ws_terminate(Config) -> doc("The Req object is kept in a more compact form by default."), {ok, Socket, _} = do_handshake("/terminate", "x-test-pid: " ++ pid_to_list(self()) ++ "\r\n", Config), %% Send a close frame. ok = gen_tcp:send(Socket, << 1:1, 0:3, 8:4, 1:1, 0:7, 0:32 >>), {ok, << 1:1, 0:3, 8:4, 0:8 >>} = gen_tcp:recv(Socket, 0, 6000), {error, closed} = gen_tcp:recv(Socket, 0, 6000), %% Confirm terminate/3 was called with a compacted Req. receive {terminate, _, Req} -> true = maps:is_key(path, Req), false = maps:is_key(headers, Req), ok after 1000 -> error(timeout) end. ws_terminate_fun(Config) -> doc("A function can be given to filter the Req object."), {ok, Socket, _} = do_handshake("/terminate?req_filter", "x-test-pid: " ++ pid_to_list(self()) ++ "\r\n", Config), %% Send a close frame. ok = gen_tcp:send(Socket, << 1:1, 0:3, 8:4, 1:1, 0:7, 0:32 >>), {ok, << 1:1, 0:3, 8:4, 0:8 >>} = gen_tcp:recv(Socket, 0, 6000), {error, closed} = gen_tcp:recv(Socket, 0, 6000), %% Confirm terminate/3 was called with a compacted Req. receive {terminate, _, Req} -> filtered = Req, ok after 1000 -> error(timeout) end. ws_text_fragments(Config) -> doc("Client sends fragmented text frames."), {ok, Socket, _} = do_handshake("/ws_echo", Config), %% Send two "Hello" over two fragments and two sends. Mask = 16#37fa213d, MaskedHello = do_mask(<<"Hello">>, Mask, <<>>), ok = gen_tcp:send(Socket, << 0:1, 0:3, 1:4, 1:1, 5:7, Mask:32, MaskedHello/binary >>), ok = gen_tcp:send(Socket, << 1:1, 0:3, 0:4, 1:1, 5:7, Mask:32, MaskedHello/binary >>), {ok, << 1:1, 0:3, 1:4, 0:1, 10:7, "HelloHello" >>} = gen_tcp:recv(Socket, 0, 6000), %% Send three "Hello" over three fragments and one send. ok = gen_tcp:send(Socket, [ << 0:1, 0:3, 1:4, 1:1, 5:7, Mask:32, MaskedHello/binary >>, << 0:1, 0:3, 0:4, 1:1, 5:7, Mask:32, MaskedHello/binary >>, << 1:1, 0:3, 0:4, 1:1, 5:7, Mask:32, MaskedHello/binary >>]), {ok, << 1:1, 0:3, 1:4, 0:1, 15:7, "HelloHelloHello" >>} = gen_tcp:recv(Socket, 0, 6000), ok. ws_timeout_hibernate(Config) -> doc("Server-initiated close on timeout with hibernating process."), {ok, Socket, _} = do_handshake("/ws_timeout_hibernate", Config), {ok, << 1:1, 0:3, 8:4, 0:1, 2:7, 1000:16 >>} = gen_tcp:recv(Socket, 0, 6000), {error, closed} = gen_tcp:recv(Socket, 0, 6000), ok. ws_timeout_no_cancel(Config) -> doc("Server-initiated timeout is not influenced by reception of Erlang messages."), {ok, Socket, _} = do_handshake("/ws_timeout_cancel", Config), {ok, << 1:1, 0:3, 8:4, 0:1, 2:7, 1000:16 >>} = gen_tcp:recv(Socket, 0, 6000), {error, closed} = gen_tcp:recv(Socket, 0, 6000), ok. ws_timeout_reset(Config) -> doc("Server-initiated timeout is reset when client sends more data."), {ok, Socket, _} = do_handshake("/ws_timeout_cancel", Config), %% Send and receive back a frame a few times. Mask = 16#37fa213d, MaskedHello = do_mask(<<"Hello">>, Mask, <<>>), [begin ok = gen_tcp:send(Socket, << 1:1, 0:3, 1:4, 1:1, 5:7, Mask:32, MaskedHello/binary >>), {ok, << 1:1, 0:3, 1:4, 0:1, 5:7, "Hello" >>} = gen_tcp:recv(Socket, 0, 6000), timer:sleep(500) end || _ <- [1, 2, 3, 4]], %% Timeout will occur after we stop sending data. {ok, << 1:1, 0:3, 8:4, 0:1, 2:7, 1000:16 >>} = gen_tcp:recv(Socket, 0, 6000), {error, closed} = gen_tcp:recv(Socket, 0, 6000), ok. ws_webkit_deflate(Config) -> doc("x-webkit-deflate-frame compression."), {ok, Socket, Headers} = do_handshake("/ws_echo", "Sec-WebSocket-Extensions: x-webkit-deflate-frame\r\n", Config), {_, "x-webkit-deflate-frame"} = lists:keyfind("sec-websocket-extensions", 1, Headers), %% Send and receive a compressed "Hello" frame. Mask = 16#11223344, CompressedHello = << 242, 72, 205, 201, 201, 7, 0 >>, MaskedHello = do_mask(CompressedHello, Mask, <<>>), ok = gen_tcp:send(Socket, << 1:1, 1:1, 0:2, 1:4, 1:1, 7:7, Mask:32, MaskedHello/binary >>), {ok, << 1:1, 1:1, 0:2, 1:4, 0:1, 7:7, CompressedHello/binary >>} = gen_tcp:recv(Socket, 0, 6000), %% Client-initiated close. ok = gen_tcp:send(Socket, << 1:1, 0:3, 8:4, 1:1, 0:7, 0:32 >>), {ok, << 1:1, 0:3, 8:4, 0:8 >>} = gen_tcp:recv(Socket, 0, 6000), {error, closed} = gen_tcp:recv(Socket, 0, 6000), ok. ws_webkit_deflate_fragments(Config) -> doc("Client sends an x-webkit-deflate-frame compressed and fragmented text frame."), {ok, Socket, Headers} = do_handshake("/ws_echo", "Sec-WebSocket-Extensions: x-webkit-deflate-frame\r\n", Config), {_, "x-webkit-deflate-frame"} = lists:keyfind("sec-websocket-extensions", 1, Headers), %% Send a compressed "Hello" over two fragments and two sends. Mask = 16#11223344, CompressedHello = << 242, 72, 205, 201, 201, 7, 0 >>, MaskedHello1 = do_mask(binary:part(CompressedHello, 0, 4), Mask, <<>>), MaskedHello2 = do_mask(binary:part(CompressedHello, 4, 3), Mask, <<>>), ok = gen_tcp:send(Socket, << 0:1, 1:1, 0:2, 1:4, 1:1, 4:7, Mask:32, MaskedHello1/binary >>), ok = gen_tcp:send(Socket, << 1:1, 1:1, 0:2, 0:4, 1:1, 3:7, Mask:32, MaskedHello2/binary >>), {ok, << 1:1, 1:1, 0:2, 1:4, 0:1, 7:7, CompressedHello/binary >>} = gen_tcp:recv(Socket, 0, 6000), ok. ws_webkit_deflate_single_bytes(Config) -> doc("Client sends an x-webkit-deflate-frame compressed text frame one byte at a time."), {ok, Socket, Headers} = do_handshake("/ws_echo", "Sec-WebSocket-Extensions: x-webkit-deflate-frame\r\n", Config), {_, "x-webkit-deflate-frame"} = lists:keyfind("sec-websocket-extensions", 1, Headers), %% We sleep between sends to make sure only one byte is sent. Mask = 16#11223344, CompressedHello = << 242, 72, 205, 201, 201, 7, 0 >>, MaskedHello = do_mask(CompressedHello, Mask, <<>>), ok = gen_tcp:send(Socket, << 16#c1 >>), timer:sleep(100), ok = gen_tcp:send(Socket, << 16#87 >>), timer:sleep(100), ok = gen_tcp:send(Socket, << 16#11 >>), timer:sleep(100), ok = gen_tcp:send(Socket, << 16#22 >>), timer:sleep(100), ok = gen_tcp:send(Socket, << 16#33 >>), timer:sleep(100), ok = gen_tcp:send(Socket, << 16#44 >>), timer:sleep(100), ok = gen_tcp:send(Socket, [binary:at(MaskedHello, 0)]), timer:sleep(100), ok = gen_tcp:send(Socket, [binary:at(MaskedHello, 1)]), timer:sleep(100), ok = gen_tcp:send(Socket, [binary:at(MaskedHello, 2)]), timer:sleep(100), ok = gen_tcp:send(Socket, [binary:at(MaskedHello, 3)]), timer:sleep(100), ok = gen_tcp:send(Socket, [binary:at(MaskedHello, 4)]), timer:sleep(100), ok = gen_tcp:send(Socket, [binary:at(MaskedHello, 5)]), timer:sleep(100), ok = gen_tcp:send(Socket, [binary:at(MaskedHello, 6)]), {ok, << 1:1, 1:1, 0:2, 1:4, 0:1, 7:7, CompressedHello/binary >>} = gen_tcp:recv(Socket, 0, 6000), ok. %% Internal. do_handshake(Path, Config) -> do_handshake(Path, "", Config). do_handshake(Path, ExtraHeaders, Config) -> {ok, Socket} = gen_tcp:connect("localhost", config(port, Config), [binary, {active, false}]), ok = gen_tcp:send(Socket, [ "GET ", Path, " 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", ExtraHeaders, "\r\n"]), {ok, Handshake} = gen_tcp:recv(Socket, 0, 6000), {ok, {http_response, {1, 1}, 101, _}, Rest} = erlang:decode_packet(http, Handshake, []), [Headers, <<>>] = do_decode_headers(erlang:decode_packet(httph, Rest, []), []), {_, "Upgrade"} = lists:keyfind('Connection', 1, Headers), {_, "websocket"} = lists:keyfind('Upgrade', 1, Headers), {_, "s3pPLMBiTxaQ9kYGzzhZRbK+xOo="} = lists:keyfind("sec-websocket-accept", 1, Headers), {ok, Socket, Headers}. do_decode_headers({ok, http_eoh, Rest}, Acc) -> [Acc, Rest]; do_decode_headers({ok, {http_header, _I, Key, _R, Value}, Rest}, Acc) -> F = fun(S) when is_atom(S) -> S; (S) -> string:to_lower(S) end, do_decode_headers(erlang:decode_packet(httph, Rest, []), [{F(Key), Value}|Acc]). do_mask(<<>>, _, Acc) -> Acc; do_mask(<< O:32, Rest/bits >>, MaskKey, Acc) -> T = O bxor MaskKey, do_mask(Rest, MaskKey, << Acc/binary, T:32 >>); do_mask(<< O:24 >>, MaskKey, Acc) -> << MaskKey2:24, _:8 >> = << MaskKey:32 >>, T = O bxor MaskKey2, << Acc/binary, T:24 >>; do_mask(<< O:16 >>, MaskKey, Acc) -> << MaskKey2:16, _:16 >> = << MaskKey:32 >>, T = O bxor MaskKey2, << Acc/binary, T:16 >>; do_mask(<< O:8 >>, MaskKey, Acc) -> << MaskKey2:8, _:24 >> = << MaskKey:32 >>, T = O bxor MaskKey2, << Acc/binary, T:8 >>.