%% %% %CopyrightBegin% %% %% Copyright Ericsson AB 1998-2010. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in %% compliance with the License. You should have received a copy of the %% Erlang Public License along with this software. If not, it can be %% retrieved online at http://www.erlang.org/. %% %% Software distributed under the License is distributed on an "AS IS" %% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See %% the License for the specific language governing rights and limitations %% under the License. %% %% %CopyrightEnd% %% -module(gen_tcp_misc_SUITE). -include_lib("test_server/include/test_server.hrl"). %-compile(export_all). -export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1, init_per_group/2,end_per_group/2, controlling_process/1, no_accept/1, close_with_pending_output/1, data_before_close/1, iter_max_socks/1, get_status/1, passive_sockets/1, accept_closed_by_other_process/1, init_per_testcase/2, end_per_testcase/2, otp_3924/1, otp_3924_sender/4, closed_socket/1, shutdown_active/1, shutdown_passive/1, shutdown_pending/1, default_options/1, http_bad_packet/1, busy_send/1, busy_disconnect_passive/1, busy_disconnect_active/1, fill_sendq/1, partial_recv_and_close/1, partial_recv_and_close_2/1,partial_recv_and_close_3/1,so_priority/1, % Accept tests primitive_accept/1,multi_accept_close_listen/1,accept_timeout/1, accept_timeouts_in_order/1,accept_timeouts_in_order2/1, accept_timeouts_in_order3/1,accept_timeouts_mixed/1, killing_acceptor/1,killing_multi_acceptors/1,killing_multi_acceptors2/1, several_accepts_in_one_go/1,active_once_closed/1, send_timeout/1, otp_7731/1, zombie_sockets/1, otp_7816/1, otp_8102/1]). %% Internal exports. -export([sender/3, not_owner/1, passive_sockets_server/2, priority_server/1, otp_7731_server/1, zombie_server/2]). init_per_testcase(_Func, Config) when is_list(Config) -> Dog = test_server:timetrap(test_server:seconds(240)), [{watchdog, Dog}|Config]. end_per_testcase(_Func, Config) -> Dog = ?config(watchdog, Config), test_server:timetrap_cancel(Dog). suite() -> [{suite_callbacks,[ts_install_scb]}]. all() -> [controlling_process, no_accept, close_with_pending_output, data_before_close, iter_max_socks, passive_sockets, accept_closed_by_other_process, otp_3924, closed_socket, shutdown_active, shutdown_passive, shutdown_pending, default_options, http_bad_packet, busy_send, busy_disconnect_passive, busy_disconnect_active, fill_sendq, partial_recv_and_close, partial_recv_and_close_2, partial_recv_and_close_3, so_priority, primitive_accept, multi_accept_close_listen, accept_timeout, accept_timeouts_in_order, accept_timeouts_in_order2, accept_timeouts_in_order3, accept_timeouts_mixed, killing_acceptor, killing_multi_acceptors, killing_multi_acceptors2, several_accepts_in_one_go, active_once_closed, send_timeout, otp_7731, zombie_sockets, otp_7816, otp_8102]. groups() -> []. init_per_suite(Config) -> Config. end_per_suite(_Config) -> ok. init_per_group(_GroupName, Config) -> Config. end_per_group(_GroupName, Config) -> Config. default_options(doc) -> ["Tests kernel application variables inet_default_listen_options and " "inet_default_connect_options"]; default_options(suite) -> []; default_options(Config) when is_list(Config) -> %% First check the delay_send option ?line {true,true,true}=do_delay_send_1(), ?line {false,false,false}=do_delay_send_2(), ?line {true,false,false}=do_delay_send_3(), ?line {false,false,false}=do_delay_send_4(), ?line {false,false,false}=do_delay_send_5(), ?line {false,true,true}=do_delay_send_6(), %% Now lets start some nodes with different combinations of options: ?line {true,true,true} = do_delay_on_other_node("", fun do_delay_send_1/0), ?line {true,false,false} = do_delay_on_other_node("-kernel inet_default_connect_options " "\"[{delay_send,true}]\"", fun do_delay_send_2/0), ?line {false,true,true} = do_delay_on_other_node("-kernel inet_default_listen_options " "\"[{delay_send,true}]\"", fun do_delay_send_2/0), ?line {true,true,true} = do_delay_on_other_node("-kernel inet_default_listen_options " "\"[{delay_send,true}]\"", fun do_delay_send_3/0), ?line {true,true,true} = do_delay_on_other_node("-kernel inet_default_connect_options " "\"[{delay_send,true}]\"", fun do_delay_send_6/0), ?line {false,false,false} = do_delay_on_other_node("-kernel inet_default_connect_options " "\"[{delay_send,true}]\"", fun do_delay_send_5/0), ?line {false,true,true} = do_delay_on_other_node("-kernel inet_default_connect_options " "\"[{delay_send,true}]\" " "-kernel inet_default_listen_options " "\"[{delay_send,true}]\"", fun do_delay_send_5/0), ?line {true,false,false} = do_delay_on_other_node("-kernel inet_default_connect_options " "\"[{delay_send,true}]\" " "-kernel inet_default_listen_options " "\"[{delay_send,true}]\"", fun do_delay_send_4/0), ?line {true,true,true} = do_delay_on_other_node("-kernel inet_default_connect_options " "\"{delay_send,true}\" " "-kernel inet_default_listen_options " "\"{delay_send,true}\"", fun do_delay_send_2/0), %% Active is to dangerous and is supressed ?line {true,true,true} = do_delay_on_other_node("-kernel inet_default_connect_options " "\"{active,false}\" " "-kernel inet_default_listen_options " "\"{active,false}\"", fun do_delay_send_7/0), ?line {true,true,true} = do_delay_on_other_node("-kernel inet_default_connect_options " "\"[{active,false},{delay_send,true}]\" " "-kernel inet_default_listen_options " "\"[{active,false},{delay_send,true}]\"", fun do_delay_send_7/0), ?line {true,true,true} = do_delay_on_other_node("-kernel inet_default_connect_options " "\"[{active,false},{delay_send,true}]\" " "-kernel inet_default_listen_options " "\"[{active,false},{delay_send,true}]\"", fun do_delay_send_2/0), ok. do_delay_on_other_node(XArgs, Function) -> Dir = filename:dirname(code:which(?MODULE)), {ok,Node} = test_server:start_node(test_default_options_slave,slave, [{args,"-pa " ++ Dir ++ " " ++ XArgs}]), Res = rpc:call(Node,erlang,apply,[Function,[]]), test_server:stop_node(Node), Res. do_delay_send_1() -> {ok,LS}=gen_tcp:listen(0,[{delay_send,true}]), {ok,{{0,0,0,0},PortNum}}=inet:sockname(LS), {ok,S}=gen_tcp:connect("localhost",PortNum,[{delay_send,true}]), {ok,S2}= gen_tcp:accept(LS), {ok,[{delay_send,B1}]}=inet:getopts(S,[delay_send]), {ok,[{delay_send,B2}]}=inet:getopts(LS,[delay_send]), {ok,[{delay_send,B3}]}=inet:getopts(S2,[delay_send]), gen_tcp:close(S2), gen_tcp:close(S), gen_tcp:close(LS), {B1,B2,B3}. do_delay_send_2() -> {ok,LS}=gen_tcp:listen(0,[]), {ok,{{0,0,0,0},PortNum}}=inet:sockname(LS), {ok,S}=gen_tcp:connect("localhost",PortNum,[]), {ok,S2}= gen_tcp:accept(LS), {ok,[{delay_send,B1}]}=inet:getopts(S,[delay_send]), {ok,[{delay_send,B2}]}=inet:getopts(LS,[delay_send]), {ok,[{delay_send,B3}]}=inet:getopts(S2,[delay_send]), gen_tcp:close(S2), gen_tcp:close(S), gen_tcp:close(LS), {B1,B2,B3}. do_delay_send_3() -> {ok,LS}=gen_tcp:listen(0,[]), {ok,{{0,0,0,0},PortNum}}=inet:sockname(LS), {ok,S}=gen_tcp:connect("localhost",PortNum,[{delay_send,true}]), {ok,S2}= gen_tcp:accept(LS), {ok,[{delay_send,B1}]}=inet:getopts(S,[delay_send]), {ok,[{delay_send,B2}]}=inet:getopts(LS,[delay_send]), {ok,[{delay_send,B3}]}=inet:getopts(S2,[delay_send]), gen_tcp:close(S2), gen_tcp:close(S), gen_tcp:close(LS), {B1,B2,B3}. do_delay_send_4() -> {ok,LS}=gen_tcp:listen(0,[{delay_send,false}]), {ok,{{0,0,0,0},PortNum}}=inet:sockname(LS), {ok,S}=gen_tcp:connect("localhost",PortNum,[]), {ok,S2}= gen_tcp:accept(LS), {ok,[{delay_send,B1}]}=inet:getopts(S,[delay_send]), {ok,[{delay_send,B2}]}=inet:getopts(LS,[delay_send]), {ok,[{delay_send,B3}]}=inet:getopts(S2,[delay_send]), gen_tcp:close(S2), gen_tcp:close(S), gen_tcp:close(LS), {B1,B2,B3}. do_delay_send_5() -> {ok,LS}=gen_tcp:listen(0,[]), {ok,{{0,0,0,0},PortNum}}=inet:sockname(LS), {ok,S}=gen_tcp:connect("localhost",PortNum,[{delay_send,false}]), {ok,S2}= gen_tcp:accept(LS), {ok,[{delay_send,B1}]}=inet:getopts(S,[delay_send]), {ok,[{delay_send,B2}]}=inet:getopts(LS,[delay_send]), {ok,[{delay_send,B3}]}=inet:getopts(S2,[delay_send]), gen_tcp:close(S2), gen_tcp:close(S), gen_tcp:close(LS), {B1,B2,B3}. do_delay_send_6() -> {ok,LS}=gen_tcp:listen(0,[{delay_send,true}]), {ok,{{0,0,0,0},PortNum}}=inet:sockname(LS), {ok,S}=gen_tcp:connect("localhost",PortNum,[]), {ok,S2}= gen_tcp:accept(LS), {ok,[{delay_send,B1}]}=inet:getopts(S,[delay_send]), {ok,[{delay_send,B2}]}=inet:getopts(LS,[delay_send]), {ok,[{delay_send,B3}]}=inet:getopts(S2,[delay_send]), gen_tcp:close(S2), gen_tcp:close(S), gen_tcp:close(LS), {B1,B2,B3}. do_delay_send_7() -> {ok,LS}=gen_tcp:listen(0,[]), {ok,{{0,0,0,0},PortNum}}=inet:sockname(LS), {ok,S}=gen_tcp:connect("localhost",PortNum,[]), {ok,S2}= gen_tcp:accept(LS), {ok,[{active,B1}]}=inet:getopts(S,[active]), {ok,[{active,B2}]}=inet:getopts(LS,[active]), {ok,[{active,B3}]}=inet:getopts(S2,[active]), gen_tcp:close(S2), gen_tcp:close(S), gen_tcp:close(LS), {B1,B2,B3}. controlling_process(doc) -> ["Open a listen port and change controlling_process for it", "The result should be ok of done by the owner process," "Otherwise is should return {error,not_owner} or similar"]; controlling_process(suite) -> []; controlling_process(Config) when is_list(Config) -> {ok,S} = gen_tcp:listen(0,[]), Pid2 = spawn(?MODULE,not_owner,[S]), Pid2 ! {self(),2,control}, ?line {error, E} = receive {2,_E} -> _E after 10000 -> timeout end, io:format("received ~p~n",[E]), Pid = spawn(?MODULE,not_owner,[S]), ?line ok = gen_tcp:controlling_process(S,Pid), Pid ! {self(),1,control}, ?line ok = receive {1,ok} -> ok after 1000 -> timeout end, Pid ! close. not_owner(S) -> receive {From,Tag,control} -> From ! {Tag,gen_tcp:controlling_process(S,self())}; close -> gen_tcp:close(S) after 1000 -> ok end. no_accept(doc) -> ["Open a listen port and connect to it, then close the listen port ", "without doing any accept. The connected socket should receive ", "a tcp_closed message."]; no_accept(suite) -> []; no_accept(Config) when is_list(Config) -> case os:type() of vxworks -> {skip,"Too tough for vxworks"}; _ -> no_accept2() end. no_accept2() -> ?line {ok, L} = gen_tcp:listen(0, []), ?line {ok, {_, Port}} = inet:sockname(L), ?line {ok, Client} = gen_tcp:connect(localhost, Port, []), ?line ok = gen_tcp:close(L), ?line receive {tcp_closed, Client} -> ok after 5000 -> ?line test_server:fail(never_closed) end. close_with_pending_output(doc) -> ["Send several packets to a socket and close it. All packets should arrive ", "to the other end."]; close_with_pending_output(suite) -> []; close_with_pending_output(Config) when is_list(Config) -> case os:type() of vxworks -> {skipped,"Too tough for vxworks"}; _ -> close_with_pending_output2() end. close_with_pending_output2() -> ?line {ok, L} = gen_tcp:listen(0, [binary, {active, false}]), ?line {ok, {_, Port}} = inet:sockname(L), ?line Packets = 16, ?line Total = 2048*Packets, case start_remote(close_pending) of {ok, Node} -> ?line {ok, Host} = inet:gethostname(), ?line spawn_link(Node, ?MODULE, sender, [Port, Packets, Host]), ?line {ok, A} = gen_tcp:accept(L), ?line case gen_tcp:recv(A, Total) of {ok, Bin} when byte_size(Bin) == Total -> gen_tcp:close(A), gen_tcp:close(L); {ok, Bin} -> ?line test_server:fail({small_packet, byte_size(Bin)}); Error -> ?line test_server:fail({unexpected, Error}) end, ok; {error, no_remote_hosts} -> {skipped,"No remote hosts"}; {error, Other} -> ?line ?t:fail({failed_to_start_slave_node, Other}) end. sender(Port, Packets, Host) -> X256 = lists:seq(0, 255), X512 = [X256|X256], X1K = [X512|X512], Bin = list_to_binary([X1K|X1K]), {ok, Sock} = gen_tcp:connect(Host, Port, []), send_loop(Sock, Bin, Packets), ok = gen_tcp:close(Sock). send_loop(_Sock, _Data, 0) -> ok; send_loop(Sock, Data, Left) -> ok = gen_tcp:send(Sock, Data), send_loop(Sock, Data, Left-1). -define(OTP_3924_MAX_DELAY, 100). %% Taken out of the blue, but on intra host connections %% I expect propagation of a close to be quite fast %% so 100 ms seems reasonable. otp_3924(doc) -> ["Tests that a socket can be closed fast enough."]; otp_3924(suite) -> []; otp_3924(Config) when is_list(Config) -> MaxDelay = (case has_superfluous_schedulers() of true -> 4; false -> 1 end * case {erlang:system_info(debug_compiled), erlang:system_info(lock_checking)} of {true, _} -> 6; {_, true} -> 2; _ -> 1 end * ?OTP_3924_MAX_DELAY), case os:type() of vxworks -> %% {skip,"Too tough for vxworks"}; otp_3924_1(MaxDelay); _ -> otp_3924_1(MaxDelay) end. otp_3924_1(MaxDelay) -> Dog = test_server:timetrap(test_server:seconds(240)), ?line {ok, Node} = start_node(otp_3924), ?line DataLen = 100*1024, ?line Data = otp_3924_data(DataLen), % Repeat the test a couple of times to prevent the test from passing % by chance. repeat(10, fun (N) -> ?line ok = otp_3924(MaxDelay, Node, Data, DataLen, N) end), ?line test_server:stop_node(Node), test_server:timetrap_cancel(Dog), ok. otp_3924(MaxDelay, Node, Data, DataLen, N) -> ?line {ok, L} = gen_tcp:listen(0, [list, {active, false}]), ?line {ok, {_, Port}} = inet:sockname(L), ?line {ok, Host} = inet:gethostname(), ?line Sender = spawn_link(Node, ?MODULE, otp_3924_sender, [self(), Host, Port, Data]), ?line Data = otp_3924_receive_data(L, Sender, MaxDelay, DataLen, N), ?line ok = gen_tcp:close(L). otp_3924_receive_data(LSock, Sender, MaxDelay, Len, N) -> ?line OP = process_flag(priority, max), ?line OTE = process_flag(trap_exit, true), ?line TimeoutRef = make_ref(), ?line Data = (catch begin ?line Sender ! start, ?line {ok, Sock} = gen_tcp:accept(LSock), ?line D = otp_3924_receive_data(Sock, TimeoutRef, MaxDelay, Len, [], 0), ?line ok = gen_tcp:close(Sock), D end), ?line unlink(Sender), ?line process_flag(trap_exit, OTE), ?line process_flag(priority, OP), receive {'EXIT', _, TimeoutRef} -> ?line test_server:fail({close_not_fast_enough,MaxDelay,N}); {'EXIT', Sender, Reason} -> ?line test_server:fail({sender_exited, Reason}); {'EXIT', _Other, Reason} -> ?line test_server:fail({linked_process_exited, Reason}) after 0 -> case Data of {'EXIT', {A,B}} -> ?line test_server:fail({A,B,N}); {'EXIT', Failure} -> ?line test_server:fail(Failure); _ -> ?line Data end end. otp_3924_receive_data(Sock, TimeoutRef, MaxDelay, Len, Acc, AccLen) -> case gen_tcp:recv(Sock, 0) of {ok, Data} -> NewAccLen = AccLen + length(Data), if NewAccLen == Len -> ?line {ok, TRef} = timer:exit_after(MaxDelay, self(), TimeoutRef), ?line {error, closed} = gen_tcp:recv(Sock, 0), ?line timer:cancel(TRef), ?line lists:flatten([Acc, Data]); NewAccLen > Len -> exit({received_too_much, NewAccLen}); true -> otp_3924_receive_data(Sock, TimeoutRef, MaxDelay, Len, [Acc, Data], NewAccLen) end; {error, closed} -> exit({premature_close, AccLen}); Error -> exit({unexpected_error, Error}) end. otp_3924_data(Size) -> Block = "This is a sequence of characters that will be repeated " "again and again and again and again and again and ... ", L = length(Block), otp_3924_data(Block, [], Size div L, Size rem L). otp_3924_data(_, Acc, 0, 0) -> lists:flatten(Acc); otp_3924_data(_, Acc, 0, SingleLeft) -> otp_3924_data(false, ["."|Acc], 0, SingleLeft-1); otp_3924_data(Block, Acc, BlockLeft, SingleLeft) -> otp_3924_data(Block, [Block|Acc], BlockLeft-1, SingleLeft). otp_3924_sender(Receiver, Host, Port, Data) -> receive start -> {ok, Sock} = gen_tcp:connect(Host, Port, [list]), gen_tcp:send(Sock, Data), ok = gen_tcp:close(Sock), unlink(Receiver) end. data_before_close(doc) -> ["Tests that a huge amount of data can be received before a close."]; data_before_close(Config) when is_list(Config) -> case os:type() of vxworks -> {skip,"Too tough for vxworks"}; _ -> data_before_close2() end. data_before_close2() -> ?line {ok, L} = gen_tcp:listen(0, [binary]), ?line {ok, {_, TcpPort}} = inet:sockname(L), ?line Bytes = 256*1024, ?line spawn_link(fun() -> huge_sender(TcpPort, Bytes) end), ?line {ok, A} = gen_tcp:accept(L), ?line case count_bytes_recv(A, 0) of {Bytes, Result} -> io:format("Result: ~p", [Result]); {Wrong, Result} -> io:format("Result: ~p", [Result]), test_server:fail({wrong_count, Wrong}) end, ok. count_bytes_recv(Sock, Total) -> receive {tcp, Sock, Bin} -> count_bytes_recv(Sock, Total+byte_size(Bin)); Other -> {Total, Other} end. huge_sender(TcpPort, Bytes) -> {ok, Client} = gen_tcp:connect(localhost, TcpPort, []), receive after 500 -> ok end, gen_tcp:send(Client, make_zero_packet(Bytes)), gen_tcp:close(Client). make_zero_packet(0) -> []; make_zero_packet(N) when N rem 2 == 0 -> P = make_zero_packet(N div 2), [P|P]; make_zero_packet(N) -> P = make_zero_packet(N div 2), [0, P|P]. get_status(doc) -> ["OTP-2924", "test that the socket process does not crash when sys:get_status(Pid)", "is called."]; get_status(suite) -> []; get_status(Config) when is_list(Config) -> ?line {ok,{socket,Pid,_,_}} = gen_tcp:listen(5678,[]), ?line {status,Pid,_,_} = sys:get_status(Pid). iter_max_socks(doc) -> ["Open as many sockets as possible. Do this several times and check ", "that we get the same number of sockets every time."]; iter_max_socks(Config) when is_list(Config) -> case os:type() of vxworks -> {skip,"Too tough for vxworks"}; _ -> iter_max_socks2() end. -define(RECOVER_SLEEP, 60000). -define(RETRY_SLEEP, 15000). iter_max_socks2() -> ?line N = case os:type() of vxworks -> 10; _ -> 20 end, L = do_iter_max_socks(N, initalize), ?line io:format("Result: ~p",[L]), ?line all_equal(L), ?line {comment, "Max sockets: " ++ integer_to_list(hd(L))}. do_iter_max_socks(0, _) -> []; do_iter_max_socks(N, initalize) -> MS = max_socks(), [MS|do_iter_max_socks(N-1, MS)]; do_iter_max_socks(N, failed) -> MS = max_socks(), [MS|do_iter_max_socks(N-1, failed)]; do_iter_max_socks(N, First) when is_integer(First) -> ?line MS = max_socks(), if MS == First -> ?line [MS|do_iter_max_socks(N-1, First)]; true -> ?line io:format("Sleeping for ~p seconds...~n", [?RETRY_SLEEP/1000]), ?line ?t:sleep(?RETRY_SLEEP), ?line io:format("Trying again...~n", []), ?line RetryMS = max_socks(), ?line if RetryMS == First -> ?line [RetryMS|do_iter_max_socks(N-1, First)]; true -> ?line [RetryMS|do_iter_max_socks(N-1, failed)] end end. all_equal([]) -> ok; all_equal([Rule | T]) -> all_equal(Rule, T). all_equal(Rule, [Rule | T]) -> all_equal(Rule, T); all_equal(_, [_ | _]) -> ?line ?t:sleep(?RECOVER_SLEEP), % Wait a while and *hope* that we'll % recover so other tests won't be % affected. ?t:fail(max_socket_mismatch); all_equal(_Rule, []) -> ok. max_socks() -> ?line Socks = open_socks(), ?line N = length(Socks), ?line lists:foreach(fun(S) -> ok = gen_tcp:close(S) end, Socks), io:format("Got ~p sockets", [N]), N. open_socks() -> case gen_tcp:listen(0, []) of {ok, L} -> {ok, {_, Port}} = inet:sockname(L), [L| connect_accept(L, Port)]; _ -> [] end. connect_accept(L, Port) -> case gen_tcp:connect(localhost, Port, []) of {ok, C} -> [C| do_accept(L, Port)]; _ -> [] end. do_accept(L, Port) -> case gen_tcp:accept(L) of {ok, A} -> [A| connect_accept(L, Port)]; _ -> [] end. start_node(Name) -> Pa = filename:dirname(code:which(?MODULE)), test_server:start_node(Name, slave, [{args, "-pa " ++ Pa}]). start_remote(Name) -> Pa = filename:dirname(code:which(?MODULE)), test_server:start_node(Name, slave, [{remote, true}, {args, "-pa " ++ Pa}]). passive_sockets(doc) -> ["Tests that when 'the other side' on a passive socket closes, the connecting", "side still can read until the end of data."]; passive_sockets(Config) when is_list(Config) -> ?line spawn_link(?MODULE, passive_sockets_server, [[{active,false}],self()]), ?line receive {socket,Port} -> ok end, ?t:sleep(500), ?line case gen_tcp:connect("localhost", Port, [{active, false}]) of {ok, Sock} -> passive_sockets_read(Sock); Error -> ?t:fail({"Could not connect to server", Error}) end. %% %% Read until we get an {error, closed}. If we get another error, this test case %% should fail. %% passive_sockets_read(Sock) -> case gen_tcp:recv(Sock, 0, 2000) of {ok, Data} -> io:format("Received ~p bytes~n", [length(Data)]), passive_sockets_read(Sock); {error, closed} -> gen_tcp:close(Sock); Error -> gen_tcp:close(Sock), ?t:fail({"Did not get {error, closed} before other error", Error}) end. passive_sockets_server(Opts, Parent) -> ?line case gen_tcp:listen(0, Opts) of {ok, LSock} -> {ok,{_,Port}} = inet:sockname(LSock), Parent ! {socket,Port}, passive_sockets_server_accept(LSock); Error -> ?t:fail({"Could not create listen socket", Error}) end. passive_sockets_server_accept(Sock) -> ?line case gen_tcp:accept(Sock) of {ok, Socket} -> ?t:sleep(500), % Simulate latency passive_sockets_server_send(Socket, 5), passive_sockets_server_accept(Sock); Error -> ?t:fail({"Could not accept connection", Error}) end. passive_sockets_server_send(Socket, 0) -> io:format("Closing other end..~n", []), gen_tcp:close(Socket); passive_sockets_server_send(Socket, X) -> ?line Data = lists:duplicate(1024*X, $a), ?line case gen_tcp:send(Socket, Data) of ok -> ?t:sleep(50), % Simulate some processing. passive_sockets_server_send(Socket, X-1); {error, _Reason} -> ?t:fail("Failed to send data") end. accept_closed_by_other_process(doc) -> ["Tests the return value from gen_tcp:accept when ", "the socket is closed from an other process. (OTP-3817)"]; accept_closed_by_other_process(Config) when is_list(Config) -> ?line Parent = self(), ?line {ok, ListenSocket} = gen_tcp:listen(0, []), ?line Child = spawn_link( fun() -> Parent ! {self(), gen_tcp:accept(ListenSocket)} end), ?line receive after 1000 -> ok end, ?line ok = gen_tcp:close(ListenSocket), ?line receive {Child, {error, closed}} -> ok; {Child, Other} -> ?t:fail({"Wrong result of gen_tcp:accept", Other}) end. repeat(N, Fun) -> repeat(N, N, Fun). repeat(N, T, Fun) when is_integer(N), N > 0 -> Fun(T-N), repeat(N-1, T, Fun); repeat(_, _, _) -> ok. closed_socket(suite) -> []; closed_socket(doc) -> ["Tests the response when using a closed socket as argument"]; closed_socket(Config) when is_list(Config) -> ?line {ok, LS1} = gen_tcp:listen(0, []), ?line erlang:yield(), ?line ok = gen_tcp:close(LS1), %% If the following delay is uncommented, the result error values %% below will change from {error, einval} to {error, closed} since %% inet_db then will have noticed that the socket is closed. %% This is a scheduling issue, i.e when the gen_server in %% in inet_db processes the 'EXIT' message from the port, %% the socket is unregistered. %% %% ?line test_server:sleep(test_server:seconds(2)), %% ?line {error, R_send} = gen_tcp:send(LS1, "data"), ?line {error, R_recv} = gen_tcp:recv(LS1, 17), ?line {error, R_accept} = gen_tcp:accept(LS1), ?line {error, R_controlling_process} = gen_tcp:controlling_process(LS1, self()), %% ?line ok = io:format("R_send = ~p~n", [R_send]), ?line ok = io:format("R_recv = ~p~n", [R_recv]), ?line ok = io:format("R_accept = ~p~n", [R_accept]), ?line ok = io:format("R_controlling_process = ~p~n", [R_controlling_process]), ok. %%% %%% Test using the gen_tcp:shutdown/2 function using a sort server. %%% shutdown_active(Config) when is_list(Config) -> ?line shutdown_common(true). shutdown_passive(Config) when is_list(Config) -> ?line shutdown_common(false). shutdown_common(Active) -> ?line P = sort_server(Active), io:format("Sort server port: ~p\n", [P]), ?line do_sort(P, []), ?line do_sort(P, ["glurf"]), ?line do_sort(P, ["abc","nisse","dum"]), ?line do_sort(P, [lists:reverse(integer_to_list(I)) || I <- lists:seq(25, 255)]), ?line do_sort(P, [lists:reverse(integer_to_list(I)) || I <- lists:seq(77, 999)]), ?line do_sort(P, [lists:reverse(integer_to_list(I)) || I <- lists:seq(25, 55)]), ?line do_sort(P, []), ?line do_sort(P, ["apa"]), ?line do_sort(P, ["kluns","gorilla"]), ?line do_sort(P, [lists:reverse(integer_to_list(I)) || I <- lists:seq(25, 1233)]), ?line do_sort(P, []), receive Any -> ?t:fail({unexpected_message,Any}) after 0 -> ok end. do_sort(P, List0) -> List = [El++"\n" || El <- List0], {ok,S} = gen_tcp:connect(localhost, P, [{packet,line}]), send_lines(S, List), gen_tcp:shutdown(S, write), Lines = collect_lines(S, true), io:format("~p\n", [Lines]), Lines = lists:sort(List), ok = gen_tcp:close(S). sort_server(Active) -> Opts = [{exit_on_close,false},{packet,line},{active,Active}], ?line {ok,L} = gen_tcp:listen(0, Opts), Go = make_ref(), ?line Pid = spawn_link(fun() -> receive Go -> sort_server_1(L, Active) end end), ?line ok = gen_tcp:controlling_process(L, Pid), ?line Pid ! Go, ?line {ok,Port} = inet:port(L), Port. sort_server_1(L, Active) -> {ok,S} = gen_tcp:accept(L), Go = make_ref(), Sorter = spawn(fun() -> receive Go -> sorter(S, Active) end end), ok = gen_tcp:controlling_process(S, Sorter), Sorter ! Go, sort_server_1(L, Active). sorter(S, Active) -> Lines = collect_lines(S, Active), send_lines(S, lists:sort(Lines)), gen_tcp:shutdown(S, write), gen_tcp:close(S). collect_lines(S, true) -> collect_lines_1(S, []); collect_lines(S, false) -> passive_collect_lines_1(S, []). collect_lines_1(S, Acc) -> receive {tcp,S,Line} -> collect_lines_1(S, [Line|Acc]); {tcp_closed,S} -> lists:reverse(Acc) end. passive_collect_lines_1(S, Acc) -> case gen_tcp:recv(S, 0) of {ok,Line} -> passive_collect_lines_1(S, [Line|Acc]); {error,closed} -> lists:reverse(Acc) end. send_lines(S, Lines) -> lists:foreach(fun(Line) -> gen_tcp:send(S, Line) end, Lines). %%% %%% Shutdown pending. %%% shutdown_pending(Config) when is_list(Config) -> N = 512*1024+17, io:format("~p\n", [N]), Data = [<>,ones(N),42], P = a_server(), io:format("Server port: ~p\n", [P]), ?line {ok,S} = gen_tcp:connect(localhost, P, []), ?line gen_tcp:send(S, Data), ?line gen_tcp:shutdown(S, write), ?line receive {tcp,S,Msg} -> io:format("~p\n", [Msg]), ?line N = list_to_integer(Msg) - 5; Other -> ?t:fail({unexpected,Other}) end, ok. ones(0) -> []; ones(1) -> [1]; ones(N) -> Half = N div 2, Ones = ones(Half), case 2*Half of N -> [Ones|Ones]; _ -> [1,Ones|Ones] end. a_server() -> ?line {ok,L} = gen_tcp:listen(0, [{exit_on_close,false},{active,false}]), ?line Pid = spawn_link(fun() -> a_server(L) end), ?line ok = gen_tcp:controlling_process(L, Pid), ?line {ok,Port} = inet:port(L), Port. a_server(L) -> {ok,S} = gen_tcp:accept(L), do_recv(S, []). do_recv(S, Bs0) -> case gen_tcp:recv(S, 0) of {ok,B} -> do_recv(S, [Bs0,B]); {error,closed} -> Bs = list_to_binary(Bs0), gen_tcp:send(S, integer_to_list(byte_size(Bs))), gen_tcp:close(S) end. %% Thanks to Luke Gorrie. Tests for a very specific problem with %% corrupt data. The testcase will be killed by the timetrap timeout %% if the bug is present. http_bad_packet(Config) when is_list(Config) -> ?line {ok,L} = gen_tcp:listen(0, [{active, false}, binary, {reuseaddr, true}, {packet, http}]), ?line {ok,Port} = inet:port(L), ?line spawn_link(fun() -> erlang:yield(), http_bad_client(Port) end), ?line case gen_tcp:accept(L) of {ok,S} -> http_worker(S); Err -> exit({accept,Err}) end. http_worker(S) -> case gen_tcp:recv(S, 0, 30000) of {ok,{http_error,Error}} -> io:format("Http error: ~s\n", [Error]); {ok,Data} -> io:format("Data: ~p\n", [Data]), http_worker(S) end. http_bad_client(Port) -> {ok,S} = gen_tcp:connect("localhost", Port, [{active,false}, binary]), ok = gen_tcp:send(S, "\r\n"), ok = gen_tcp:close(S). %% Fill send queue and then start receiving. %% busy_send(Config) when is_list(Config) -> ?line Master = self(), ?line Msg = <<"the quick brown fox jumps over a lazy dog~n">>, ?line Server = spawn_link(fun () -> {ok,L} = gen_tcp:listen (0, [{active,false},binary, {reuseaddr,true},{packet,0}]), {ok,Port} = inet:port(L), Master ! {self(),client, busy_send_client(Port, Master, Msg)}, busy_send_srv(L, Master, Msg) end), ?line io:format("~p Server~n", [Server]), ?line receive {Server,client,Client} -> ?line io:format("~p Client~n", [Client]), ?line busy_send_loop(Server, Client, 0) end. busy_send_loop(Server, Client, N) -> %% Master %% ?line receive {Server,send} -> busy_send_loop(Server, Client, N+1) after 2000 -> %% Send queue full, sender blocked %% -> stop sender and release client ?line io:format("Send timeout, time to receive...~n", []), ?line Server ! {self(),close}, ?line Client ! {self(),recv,N+1}, ?line receive {Server,send} -> ?line busy_send_2(Server, Client, N+1) after 10000 -> ?t:fail({timeout,{server,not_send,flush([])}}) end end. busy_send_2(Server, Client, _N) -> %% Master %% ?line receive {Server,[closed]} -> ?line receive {Client,[0,{error,closed}]} -> ok end after 10000 -> ?t:fail({timeout,{server,not_closed,flush([])}}) end. busy_send_srv(L, Master, Msg) -> %% Server %% {ok,Socket} = gen_tcp:accept(L), busy_send_srv_loop(Socket, Master, Msg). busy_send_srv_loop(Socket, Master, Msg) -> %% Server %% receive {Master,close} -> ok = gen_tcp:close(Socket), Master ! {self(),flush([closed])} after 0 -> ok = gen_tcp:send(Socket, Msg), Master ! {self(),send}, busy_send_srv_loop(Socket, Master, Msg) end. busy_send_client(Port, Master, Msg) -> %% Client %% spawn_link( fun () -> {ok,Socket} = gen_tcp:connect( "localhost", Port, [{active,false},binary,{packet,0}]), receive {Master,recv, N} -> busy_send_client_loop(Socket, Master, Msg, N) end end). busy_send_client_loop(Socket, Master, Msg, N) -> %% Client %% Size = byte_size(Msg), case gen_tcp:recv(Socket, Size) of {ok,Msg} -> busy_send_client_loop(Socket, Master, Msg, N-1); Other -> Master ! {self(),flush([Other,N])} end. %%% %%% Send to a socket whose other end does not read until the port gets busy. %%% Then close the other end. The writer should get an {error,closed} error. %%% (Passive mode.) %%% busy_disconnect_passive(Config) when is_list(Config) -> MuchoData = list_to_binary(ones(64*1024)), ?line [do_busy_disconnect_passive(MuchoData) || _ <- lists:seq(1, 10)], ok. do_busy_disconnect_passive(MuchoData) -> S = busy_disconnect_prepare_server([{active,false}]), busy_disconnect_passive_send(S, MuchoData). busy_disconnect_passive_send(S, Data) -> ?line case gen_tcp:send(S, Data) of ok -> ?line busy_disconnect_passive_send(S, Data); {error,closed} -> ok end. %%% %%% Send to a socket whose other end does not read until the port gets busy. %%% Then close the other end. The writer should get an {error,closed} error and %%% a {tcp_closed,Socket} message. (Active mode.) %%% busy_disconnect_active(Config) when is_list(Config) -> MuchoData = list_to_binary(ones(64*1024)), ?line [do_busy_disconnect_active(MuchoData) || _ <- lists:seq(1, 10)], ok. do_busy_disconnect_active(MuchoData) -> S = busy_disconnect_prepare_server([{active,true}]), busy_disconnect_active_send(S, MuchoData). busy_disconnect_active_send(S, Data) -> ?line case gen_tcp:send(S, Data) of ok -> ?line busy_disconnect_active_send(S, Data); {error,closed} -> receive {tcp_closed,S} -> ok; _Other -> ?line ?t:fail() end end. busy_disconnect_prepare_server(ConnectOpts) -> ?line Sender = self(), ?line Server = spawn_link(fun() -> busy_disconnect_server(Sender) end), receive {port,Server,Port} -> ok end, ?line {ok,S} = gen_tcp:connect(localhost, Port, ConnectOpts), Server ! {Sender,sending}, S. busy_disconnect_server(Sender) -> {ok,L} = gen_tcp:listen(0, [{active,false},binary,{reuseaddr,true},{packet,0}]), {ok,Port} = inet:port(L), Sender ! {port,self(),Port}, {ok,S} = gen_tcp:accept(L), receive {Sender,sending} -> busy_disconnect_server_wait_for_busy(Sender, S) end. %% Close the socket as soon as the Sender process can't send because of %% a busy port. busy_disconnect_server_wait_for_busy(Sender, S) -> case process_info(Sender, status) of {status,waiting} -> %% We KNOW that the sender will be in state 'waiting' only %% if the port has become busy. (Fallback solution if the %% implementation changes: Watch Sender's reduction count; %% when it stops changing, wait 2 seconds and then close.) gen_tcp:close(S); _Other -> io:format("~p\n", [_Other]), timer:sleep(100), busy_disconnect_server_wait_for_busy(Sender, S) end. %%% %%% Fill send queue %%% fill_sendq(Config) when is_list(Config) -> ?line Master = self(), ?line Server = spawn_link(fun () -> {ok,L} = gen_tcp:listen (0, [{active,false},binary, {reuseaddr,true},{packet,0}]), {ok,Port} = inet:port(L), Master ! {self(),client, fill_sendq_client(Port, Master)}, fill_sendq_srv(L, Master) end), ?line io:format("~p Server~n", [Server]), ?line receive {Server,client,Client} -> ?line io:format("~p Client~n", [Client]), ?line receive {Server,reader,Reader} -> ?line io:format("~p Reader~n", [Reader]), ?line fill_sendq_loop(Server, Client, Reader) end end. fill_sendq_loop(Server, Client, Reader) -> %% Master %% receive {Server,send} -> fill_sendq_loop(Server, Client, Reader) after 2000 -> %% Send queue full, sender blocked -> close client. ?line io:format("Send timeout, closing Client...~n", []), ?line Client ! {self(),close}, ?line receive {Server,[{error,closed}]} -> ?line io:format("Got server closed.~n"), ?line receive {Reader,[{error,closed}]} -> ?line io:format ("Got reader closed.~n"), ok after 3000 -> ?t:fail({timeout,{closed,reader}}) end; {Reader,[{error,closed}]} -> ?line io:format("Got reader closed.~n"), ?line receive {Server,[{error,closed}]} -> ?line io:format("Got server closed~n"), ok after 3000 -> ?t:fail({timeout,{closed,server}}) end after 3000 -> ?t:fail({timeout,{closed,[server,reader]}}) end end. fill_sendq_srv(L, Master) -> %% Server %% case gen_tcp:accept(L) of {ok,S} -> Master ! {self(),reader, spawn_link(fun () -> fill_sendq_read(S, Master) end)}, Msg = "the quick brown fox jumps over a lazy dog~n", fill_sendq_write(S, Master, [Msg,Msg,Msg,Msg,Msg,Msg,Msg,Msg]); Error -> io:format("~p error: ~p.~n", [self(),Error]), Master ! {self(),flush([Error])} end. fill_sendq_write(S, Master, Msg) -> %% Server %% %%io:format("~p sending...~n", [self()]), Master ! {self(),send}, case gen_tcp:send(S, Msg) of ok -> %%io:format("~p ok.~n", [self()]), fill_sendq_write(S, Master, Msg); E -> Error = flush([E]), io:format("~p error: ~p.~n", [self(),Error]), Master ! {self(),Error} end. fill_sendq_read(S, Master) -> %% Reader %% io:format("~p read infinity...~n", [self()]), case gen_tcp:recv(S, 0, infinity) of {ok,Data} -> io:format("~p got: ~p.~n", [self(),Data]), fill_sendq_read(S, Master); E -> Error = flush([E]), io:format("~p error: ~p.~n", [self(),Error]), Master ! {self(),Error} end. fill_sendq_client(Port, Master) -> %% Client %% spawn_link(fun () -> %% Just close on order {ok,S} = gen_tcp:connect( "localhost", Port, [{active,false},binary,{packet,0}]), receive {Master,close} -> ok = gen_tcp:close(S) end end). %%% Try to receive more than available number of bytes from %%% a closed socket. %%% partial_recv_and_close(Config) when is_list(Config) -> ?line Msg = "the quick brown fox jumps over a lazy dog 0123456789\n", ?line Len = length(Msg), ?line {ok,L} = gen_tcp:listen(0, [{active,false}]), ?line {ok,P} = inet:port(L), ?line {ok,S} = gen_tcp:connect("localhost", P, [{active,false}]), ?line {ok,A} = gen_tcp:accept(L), ?line ok = gen_tcp:send(S, Msg), ?line ok = gen_tcp:close(S), ?line {error,closed} = gen_tcp:recv(A, Len+1), ok. %%% Try to receive more than available number of bytes from %%% a closed socket, this time waiting in the recv before closing. %%% partial_recv_and_close_2(Config) when is_list(Config) -> ?line Msg = "the quick brown fox jumps over a lazy dog 0123456789\n", ?line Len = length(Msg), ?line {ok,L} = gen_tcp:listen(0, [{active,false}]), ?line {ok,P} = inet:port(L), ?line Server = self(), ?line Client = spawn_link( fun () -> receive after 2000 -> ok end, {ok,S} = gen_tcp:connect("localhost", P, [{active,false}]), ?line ok = gen_tcp:send(S, Msg), receive {Server,close} -> ok end, receive after 2000 -> ok end, ?line ok = gen_tcp:close(S) end), ?line {ok,A} = gen_tcp:accept(L), ?line Client ! {Server,close}, ?line {error,closed} = gen_tcp:recv(A, Len+1), ok. %%% Here we tests that gen_tcp:recv/2 will return {error,closed} following %%% a send operation of a huge amount data when the other end closed the socket. %%% partial_recv_and_close_3(Config) when is_list(Config) -> [do_partial_recv_and_close_3() || _ <- lists:seq(0, 20)], ok. do_partial_recv_and_close_3() -> Parent = self(), spawn_link(fun() -> {ok,L} = gen_tcp:listen(0, [{active,false}]), {ok,{_,Port}} = inet:sockname(L), Parent ! {port,Port}, {ok,S} = gen_tcp:accept(L), gen_tcp:recv(S, 1), gen_tcp:close(S) end), receive {port,Port} -> ok end, ?line Much = ones(8*64*1024), ?line {ok,S} = gen_tcp:connect(localhost, Port, [{active,false}]), %% Send a lot of data (most of it will be queued). The receiver will read one byte %% and close the connection. The write operation will fail. ?line gen_tcp:send(S, Much), %% We should always get {error,closed} here. ?line {error,closed} = gen_tcp:recv(S, 0). test_prio_put_get() -> Tos = 3 bsl 5, ?line {ok,L1} = gen_tcp:listen(0, [{active,false}]), ?line ok = inet:setopts(L1,[{priority,3}]), ?line ok = inet:setopts(L1,[{tos,Tos}]), ?line {ok,[{priority,3},{tos,Tos}]} = inet:getopts(L1,[priority,tos]), ?line ok = inet:setopts(L1,[{priority,3}]), % Dont destroy each other ?line {ok,[{priority,3},{tos,Tos}]} = inet:getopts(L1,[priority,tos]), ?line ok = inet:setopts(L1,[{reuseaddr,true}]), % Dont let others destroy ?line {ok,[{priority,3},{tos,Tos}]} = inet:getopts(L1,[priority,tos]), ?line gen_tcp:close(L1), ok. test_prio_accept() -> ?line {ok,Sock}=gen_tcp:listen(0,[binary,{packet,0},{active,false}, {reuseaddr,true},{priority,4}]), ?line {ok,Port} = inet:port(Sock), ?line {ok,Sock2}=gen_tcp:connect("localhost",Port,[binary,{packet,0}, {active,false}, {reuseaddr,true}, {priority,4}]), ?line {ok,Sock3}=gen_tcp:accept(Sock), ?line {ok,[{priority,4}]} = inet:getopts(Sock,[priority]), ?line {ok,[{priority,4}]} = inet:getopts(Sock2,[priority]), ?line {ok,[{priority,4}]} = inet:getopts(Sock3,[priority]), ?line gen_tcp:close(Sock), ?line gen_tcp:close(Sock2), ?line gen_tcp:close(Sock3), ok. test_prio_accept2() -> Tos1 = 4 bsl 5, Tos2 = 3 bsl 5, ?line {ok,Sock}=gen_tcp:listen(0,[binary,{packet,0},{active,false}, {reuseaddr,true},{priority,4}, {tos,Tos1}]), ?line {ok,Port} = inet:port(Sock), ?line {ok,Sock2}=gen_tcp:connect("localhost",Port,[binary,{packet,0}, {active,false}, {reuseaddr,true}, {priority,4}, {tos,Tos2}]), ?line {ok,Sock3}=gen_tcp:accept(Sock), ?line {ok,[{priority,4},{tos,Tos1}]} = inet:getopts(Sock,[priority,tos]), ?line {ok,[{priority,4},{tos,Tos2}]} = inet:getopts(Sock2,[priority,tos]), ?line {ok,[{priority,4},{tos,Tos1}]} = inet:getopts(Sock3,[priority,tos]), ?line gen_tcp:close(Sock), ?line gen_tcp:close(Sock2), ?line gen_tcp:close(Sock3), ok. test_prio_accept3() -> Tos1 = 4 bsl 5, Tos2 = 3 bsl 5, ?line {ok,Sock}=gen_tcp:listen(0,[binary,{packet,0},{active,false}, {reuseaddr,true}, {tos,Tos1}]), ?line {ok,Port} = inet:port(Sock), ?line {ok,Sock2}=gen_tcp:connect("localhost",Port,[binary,{packet,0}, {active,false}, {reuseaddr,true}, {tos,Tos2}]), ?line {ok,Sock3}=gen_tcp:accept(Sock), ?line {ok,[{priority,0},{tos,Tos1}]} = inet:getopts(Sock,[priority,tos]), ?line {ok,[{priority,0},{tos,Tos2}]} = inet:getopts(Sock2,[priority,tos]), ?line {ok,[{priority,0},{tos,Tos1}]} = inet:getopts(Sock3,[priority,tos]), ?line gen_tcp:close(Sock), ?line gen_tcp:close(Sock2), ?line gen_tcp:close(Sock3), ok. test_prio_accept_async() -> Tos1 = 4 bsl 5, Tos2 = 3 bsl 5, Ref = make_ref(), ?line spawn(?MODULE,priority_server,[{self(),Ref}]), ?line Port = receive {Ref,P} -> P after 5000 -> ?t:fail({error,"helper process timeout"}) end, ?line receive after 3000 -> ok end, ?line {ok,Sock2}=gen_tcp:connect("localhost",Port,[binary,{packet,0}, {active,false}, {reuseaddr,true}, {priority,4}, {tos,Tos2}]), ?line receive {Ref,{ok,[{priority,4},{tos,Tos1}]}} -> ok ; {Ref,Error} -> ?t:fail({missmatch,Error}) after 5000 -> ?t:fail({error,"helper process timeout"}) end, ?line receive {Ref,{ok,[{priority,4},{tos,Tos1}]}} -> ok ; {Ref,Error2} -> ?t:fail({missmatch,Error2}) after 5000 -> ?t:fail({error,"helper process timeout"}) end, ?line {ok,[{priority,4},{tos,Tos2}]} = inet:getopts(Sock2,[priority,tos]), ?line catch gen_tcp:close(Sock2), ok. priority_server({Parent,Ref}) -> Tos1 = 4 bsl 5, ?line {ok,Sock}=gen_tcp:listen(0,[binary,{packet,0},{active,false}, {reuseaddr,true},{priority,4}, {tos,Tos1}]), ?line {ok,Port} = inet:port(Sock), Parent ! {Ref,Port}, ?line {ok,Sock3}=gen_tcp:accept(Sock), Parent ! {Ref, inet:getopts(Sock,[priority,tos])}, Parent ! {Ref, inet:getopts(Sock3,[priority,tos])}, ok. test_prio_fail() -> ?line {ok,L} = gen_tcp:listen(0, [{active,false}]), ?line {error,_} = inet:setopts(L,[{priority,1000}]), % This error could only happen in linux kernels earlier than 2.6.24.4 % Privilege check is now disabled and IP_TOS can never fail (only silently % be masked). % ?line {error,_} = inet:setopts(L,[{tos,6 bsl 5}]), ?line gen_tcp:close(L), ok. test_prio_udp() -> Tos = 3 bsl 5, ?line {ok,S} = gen_udp:open(0,[{active,false},binary,{tos, Tos}, {priority,3}]), ?line {ok,[{priority,3},{tos,Tos}]} = inet:getopts(S,[priority,tos]), ?line gen_udp:close(S), ok. so_priority(doc) -> ["Tests the so_priority and ip_tos options on sockets when applicable."]; so_priority(suite) -> []; so_priority(Config) when is_list(Config) -> ?line {ok,L} = gen_tcp:listen(0, [{active,false}]), ?line ok = inet:setopts(L,[{priority,1}]), ?line case inet:getopts(L,[priority]) of {ok,[{priority,1}]} -> gen_tcp:close(L), test_prio_put_get(), test_prio_accept(), test_prio_accept2(), test_prio_accept3(), test_prio_accept_async(), test_prio_fail(), test_prio_udp(), ok; _ -> case os:type() of {unix,linux} -> case os:version() of {X,Y,_} when (X > 2) or ((X =:= 2) and (Y >= 4)) -> ?line ?t:fail({error, "so_priority should work on this " "OS, but does not"}); _ -> {skip, "SO_PRIORITY not suppoorted"} end; _ -> {skip, "SO_PRIORITY not suppoorted"} end end. %% Accept test utilities (suites are below) millis() -> {A,B,C}=erlang:now(), (A*1000000*1000)+(B*1000)+(C div 1000). collect_accepts(Tmo) -> A = millis(), receive {accepted,P,Msg} -> [{P,Msg}] ++ collect_accepts(Tmo-(millis() - A)) after Tmo -> [] end. -define(EXPECT_ACCEPTS(Pattern,Timeout), (fun() -> case collect_accepts(Timeout) of Pattern -> ok; Other -> {error,{unexpected,{Other,process_info(self(),messages)}}} end end)()). collect_connects(Tmo) -> A = millis(), receive {connected,P,Msg} -> [{P,Msg}] ++ collect_connects(Tmo-(millis() - A)) after Tmo -> [] end. -define(EXPECT_CONNECTS(Pattern,Timeout), (fun() -> case collect_connects(Timeout) of Pattern -> ok; Other -> {error,{unexpected,Other}} end end)()). mktmofun(Tmo,Parent,LS) -> fun() -> Parent ! {accepted,self(), catch gen_tcp:accept(LS,Tmo)} end. %% Accept tests primitive_accept(suite) -> []; primitive_accept(doc) -> ["Test singular accept"]; primitive_accept(Config) when is_list(Config) -> ?line {ok,LS}=gen_tcp:listen(0,[]), ?line {ok,PortNo}=inet:port(LS), ?line Parent = self(), ?line F = fun() -> Parent ! {accepted,self(),gen_tcp:accept(LS)} end, ?line P = spawn(F), ?line gen_tcp:connect("localhost",PortNo,[]), ?line receive {accepted,P,{ok,P0}} when is_port(P0) -> ok; {accepted,P,Other0} -> {error,Other0} after 500 -> {error,timeout} end. multi_accept_close_listen(suite) -> []; multi_accept_close_listen(doc) -> ["Closing listen socket when multi-accepting"]; multi_accept_close_listen(Config) when is_list(Config) -> ?line {ok,LS}=gen_tcp:listen(0,[]), ?line Parent = self(), ?line F = fun() -> Parent ! {accepted,self(),gen_tcp:accept(LS)} end, ?line spawn(F), ?line spawn(F), ?line spawn(F), ?line spawn(F), ?line gen_tcp:close(LS), ?line ?EXPECT_ACCEPTS([{_,{error,closed}},{_,{error,closed}}, {_,{error,closed}},{_,{error,closed}}], 500). accept_timeout(suite) -> []; accept_timeout(doc) -> ["Single accept with timeout"]; accept_timeout(Config) when is_list(Config) -> ?line {ok,LS}=gen_tcp:listen(0,[]), ?line Parent = self(), ?line F = fun() -> Parent ! {accepted,self(),gen_tcp:accept(LS,1000)} end, ?line P = spawn(F), ?line ?EXPECT_ACCEPTS([{P,{error,timeout}}],2000). accept_timeouts_in_order(suite) -> []; accept_timeouts_in_order(doc) -> ["Check that multi-accept timeouts happen in the correct order"]; accept_timeouts_in_order(Config) when is_list(Config) -> ?line {ok,LS}=gen_tcp:listen(0,[]), ?line Parent = self(), ?line P1 = spawn(mktmofun(1000,Parent,LS)), ?line P2 = spawn(mktmofun(1200,Parent,LS)), ?line P3 = spawn(mktmofun(1300,Parent,LS)), ?line P4 = spawn(mktmofun(1400,Parent,LS)), ?line ?EXPECT_ACCEPTS([{P1,{error,timeout}},{P2,{error,timeout}}, {P3,{error,timeout}},{P4,{error,timeout}}], 2000). accept_timeouts_in_order2(suite) -> []; accept_timeouts_in_order2(doc) -> ["Check that multi-accept timeouts happen in the correct order (more)"]; accept_timeouts_in_order2(Config) when is_list(Config) -> ?line {ok,LS}=gen_tcp:listen(0,[]), ?line Parent = self(), ?line P1 = spawn(mktmofun(1400,Parent,LS)), ?line P2 = spawn(mktmofun(1300,Parent,LS)), ?line P3 = spawn(mktmofun(1200,Parent,LS)), ?line P4 = spawn(mktmofun(1000,Parent,LS)), ?line ?EXPECT_ACCEPTS([{P4,{error,timeout}},{P3,{error,timeout}}, {P2,{error,timeout}},{P1,{error,timeout}}], 2000). accept_timeouts_in_order3(suite) -> []; accept_timeouts_in_order3(doc) -> ["Check that multi-accept timeouts happen in the correct order (even more)"]; accept_timeouts_in_order3(Config) when is_list(Config) -> ?line {ok,LS}=gen_tcp:listen(0,[]), ?line Parent = self(), ?line P1 = spawn(mktmofun(1200,Parent,LS)), ?line P2 = spawn(mktmofun(1400,Parent,LS)), ?line P3 = spawn(mktmofun(1300,Parent,LS)), ?line P4 = spawn(mktmofun(1000,Parent,LS)), ?line ?EXPECT_ACCEPTS([{P4,{error,timeout}},{P1,{error,timeout}}, {P3,{error,timeout}},{P2,{error,timeout}}], 2000). accept_timeouts_mixed(suite) -> []; accept_timeouts_mixed(doc) -> ["Check that multi-accept timeouts behave correctly when mixed with successful timeouts"]; accept_timeouts_mixed(Config) when is_list(Config) -> ?line {ok,LS}=gen_tcp:listen(0,[]), ?line Parent = self(), ?line {ok,PortNo}=inet:port(LS), ?line P1 = spawn(mktmofun(1000,Parent,LS)), ?line wait_until_accepting(P1,500), ?line P2 = spawn(mktmofun(2000,Parent,LS)), ?line wait_until_accepting(P2,500), ?line P3 = spawn(mktmofun(3000,Parent,LS)), ?line wait_until_accepting(P3,500), ?line P4 = spawn(mktmofun(4000,Parent,LS)), ?line wait_until_accepting(P4,500), ?line ok = ?EXPECT_ACCEPTS([{P1,{error,timeout}}],1500), ?line {ok,_}=gen_tcp:connect("localhost",PortNo,[]), ?line ok = ?EXPECT_ACCEPTS([{P2,{ok,Port0}}] when is_port(Port0),100), ?line ok = ?EXPECT_ACCEPTS([{P3,{error,timeout}}],2000), ?line gen_tcp:connect("localhost",PortNo,[]), ?line ?EXPECT_ACCEPTS([{P4,{ok,Port1}}] when is_port(Port1),100). killing_acceptor(suite) -> []; killing_acceptor(doc) -> ["Check that single acceptor behaves as expected when killed"]; killing_acceptor(Config) when is_list(Config) -> ?line {ok,LS}=gen_tcp:listen(0,[]), ?line Pid = spawn(fun() -> erlang:display({accepted,self(),gen_tcp:accept(LS)}) end), ?line receive after 100 -> ok end, ?line {ok,L1} = prim_inet:getstatus(LS), ?line true = lists:member(accepting, L1), ?line exit(Pid,kill), ?line receive after 100 -> ok end, ?line {ok,L2} = prim_inet:getstatus(LS), ?line false = lists:member(accepting, L2), ok. killing_multi_acceptors(suite) -> []; killing_multi_acceptors(doc) -> ["Check that multi acceptors behaves as expected when killed"]; killing_multi_acceptors(Config) when is_list(Config) -> ?line {ok,LS}=gen_tcp:listen(0,[]), ?line Parent = self(), ?line F = fun() -> Parent ! {accepted,self(),gen_tcp:accept(LS)} end, ?line F2 = mktmofun(1000,Parent,LS), ?line Pid = spawn(F), ?line Pid2 = spawn(F2), ?line receive after 100 -> ok end, ?line {ok,L1} = prim_inet:getstatus(LS), ?line true = lists:member(accepting, L1), ?line exit(Pid,kill), ?line receive after 100 -> ok end, ?line {ok,L2} = prim_inet:getstatus(LS), ?line true = lists:member(accepting, L2), ?line ok = ?EXPECT_ACCEPTS([{Pid2,{error,timeout}}],1000), ?line {ok,L3} = prim_inet:getstatus(LS), ?line false = lists:member(accepting, L3), ok. killing_multi_acceptors2(suite) -> []; killing_multi_acceptors2(doc) -> ["Check that multi acceptors behaves as expected when killed (more)"]; killing_multi_acceptors2(Config) when is_list(Config) -> ?line {ok,LS}=gen_tcp:listen(0,[]), ?line Parent = self(), ?line {ok,PortNo}=inet:port(LS), ?line F = fun() -> Parent ! {accepted,self(),gen_tcp:accept(LS)} end, ?line F2 = mktmofun(1000,Parent,LS), ?line Pid = spawn(F), ?line Pid2 = spawn(F), ?line receive after 100 -> ok end, ?line {ok,L1} = prim_inet:getstatus(LS), ?line true = lists:member(accepting, L1), ?line exit(Pid,kill), ?line receive after 100 -> ok end, ?line {ok,L2} = prim_inet:getstatus(LS), ?line true = lists:member(accepting, L2), ?line exit(Pid2,kill), ?line receive after 100 -> ok end, ?line {ok,L3} = prim_inet:getstatus(LS), ?line false = lists:member(accepting, L3), ?line Pid3 = spawn(F2), ?line receive after 100 -> ok end, ?line {ok,L4} = prim_inet:getstatus(LS), ?line true = lists:member(accepting, L4), ?line gen_tcp:connect("localhost",PortNo,[]), ?line ok = ?EXPECT_ACCEPTS([{Pid3,{ok,Port}}] when is_port(Port),100), ?line {ok,L5} = prim_inet:getstatus(LS), ?line false = lists:member(accepting, L5), ok. several_accepts_in_one_go(suite) -> []; several_accepts_in_one_go(doc) -> ["checks that multi-accept works when more than one accept can be " "done at once (wb test of inet_driver)"]; several_accepts_in_one_go(Config) when is_list(Config) -> ?line {ok,LS}=gen_tcp:listen(0,[]), ?line Parent = self(), ?line {ok,PortNo}=inet:port(LS), ?line F1 = fun() -> Parent ! {accepted,self(),gen_tcp:accept(LS)} end, ?line F2 = fun() -> Parent ! {connected,self(),gen_tcp:connect("localhost",PortNo,[])} end, ?line spawn(F1), ?line spawn(F1), ?line spawn(F1), ?line spawn(F1), ?line spawn(F1), ?line spawn(F1), ?line spawn(F1), ?line spawn(F1), ?line ok = ?EXPECT_ACCEPTS([],500), ?line spawn(F2), ?line spawn(F2), ?line spawn(F2), ?line spawn(F2), ?line spawn(F2), ?line spawn(F2), ?line spawn(F2), ?line spawn(F2), ?line ok = ?EXPECT_ACCEPTS([{_,{ok,_}},{_,{ok,_}},{_,{ok,_}},{_,{ok,_}},{_,{ok,_}},{_,{ok,_}},{_,{ok,_}},{_,{ok,_}}],15000), ?line ok = ?EXPECT_CONNECTS([{_,{ok,_}},{_,{ok,_}},{_,{ok,_}},{_,{ok,_}},{_,{ok,_}},{_,{ok,_}},{_,{ok,_}},{_,{ok,_}}],1000), ok. flush(Msgs) -> erlang:yield(), receive Msg -> flush([Msg|Msgs]) after 0 -> lists:reverse(Msgs) end. wait_until_accepting(Proc,0) -> exit({timeout_waiting_for_accepting,Proc}); wait_until_accepting(Proc,N) -> case process_info(Proc,current_function) of {current_function,{prim_inet,accept0,2}} -> case process_info(Proc,status) of {status,waiting} -> ok; _O1 -> receive after 5 -> wait_until_accepting(Proc,N-1) end end; _O2 -> receive after 5 -> wait_until_accepting(Proc,N-1) end end. active_once_closed(suite) -> []; active_once_closed(doc) -> ["Check that active once and tcp_close messages behave as expected"]; active_once_closed(Config) when is_list(Config) -> (fun() -> ?line {Loop,A} = setup_closed_ao(), ?line Loop({{error,closed},{error,econnaborted}}, fun() -> gen_tcp:send(A,"Hello") end), ?line ok = inet:setopts(A,[{active,once}]), ?line ok = receive {tcp_closed, A} -> ok after 1000 -> error end, ?line {error,einval} = inet:setopts(A,[{active,once}]), ?line ok = receive {tcp_closed, A} -> error after 1000 -> ok end end)(), (fun() -> ?line {Loop,A} = setup_closed_ao(), ?line Loop({{error,closed},{error,econnaborted}}, fun() -> gen_tcp:send(A,"Hello") end), ?line ok = inet:setopts(A,[{active,true}]), ?line ok = receive {tcp_closed, A} -> ok after 1000 -> error end, ?line {error,einval} = inet:setopts(A,[{active,true}]), ?line ok = receive {tcp_closed, A} -> error after 1000 -> ok end end)(), (fun() -> ?line {Loop,A} = setup_closed_ao(), ?line Loop({{error,closed},{error,econnaborted}}, fun() -> gen_tcp:send(A,"Hello") end), ?line ok = inet:setopts(A,[{active,true}]), ?line ok = receive {tcp_closed, A} -> ok after 1000 -> error end, ?line {error,einval} = inet:setopts(A,[{active,once}]), ?line ok = receive {tcp_closed, A} -> error after 1000 -> ok end end)(), (fun() -> ?line {Loop,A} = setup_closed_ao(), ?line Loop({{error,closed},{error,econnaborted}}, fun() -> gen_tcp:send(A,"Hello") end), ?line ok = inet:setopts(A,[{active,once}]), ?line ok = receive {tcp_closed, A} -> ok after 1000 -> error end, ?line {error,einval} = inet:setopts(A,[{active,true}]), ?line ok = receive {tcp_closed, A} -> error after 1000 -> ok end end)(), (fun() -> ?line {Loop,A} = setup_closed_ao(), ?line Loop({{error,closed},{error,econnaborted}}, fun() -> gen_tcp:send(A,"Hello") end), ?line ok = inet:setopts(A,[{active,false}]), ?line ok = receive {tcp_closed, A} -> error after 1000 -> ok end, ?line ok = inet:setopts(A,[{active,once}]), ?line ok = receive {tcp_closed, A} -> ok after 1000 -> error end end)(). send_timeout(suite) -> []; send_timeout(doc) -> ["Test the send_timeout socket option"]; send_timeout(Config) when is_list(Config) -> %% Basic BasicFun = fun(AutoClose) -> ?line {Loop,A,RNode} = setup_timeout_sink(1000, AutoClose), ?line {error,timeout} = Loop(fun() -> Res = gen_tcp:send(A,<<1:10000>>), %%erlang:display(Res), Res end), %% Check that the socket is not busy/closed... Error = after_send_timeout(AutoClose), ?line {error,Error} = gen_tcp:send(A,<<"Hej">>), ?line test_server:stop_node(RNode) end, BasicFun(false), BasicFun(true), %% Check timeout length ?line Self = self(), ?line Pid = spawn(fun() -> {Loop,A,RNode} = setup_timeout_sink(1000, true), {error,timeout} = Loop(fun() -> Res = gen_tcp:send(A,<<1:10000>>), %%erlang:display(Res), Self ! Res, Res end), test_server:stop_node(RNode) end), ?line Diff = get_max_diff(), ?line io:format("Max time for send: ~p~n",[Diff]), ?line true = (Diff > 500) and (Diff < 1500), %% Let test_server slave die... ?line Mon = erlang:monitor(process, Pid), ?line receive {'DOWN',Mon,process,Pid,_} -> ok end, %% Check that parallell writers do not hang forever ParaFun = fun(AutoClose) -> ?line {Loop,A,RNode} = setup_timeout_sink(1000, AutoClose), SenderFun = fun() -> {error,Error} = Loop(fun() -> gen_tcp:send(A, <<1:10000>>) end), Self ! {error,Error} end, ?line spawn_link(SenderFun), ?line spawn_link(SenderFun), ?line receive {error,timeout} -> ok after 10000 -> ?line exit(timeout) end, NextErr = after_send_timeout(AutoClose), ?line receive {error,NextErr} -> ok after 10000 -> ?line exit(timeout) end, ?line {error,NextErr} = gen_tcp:send(A,<<"Hej">>), ?line test_server:stop_node(RNode) end, ParaFun(false), ParaFun(true), ok. after_send_timeout(AutoClose) -> case AutoClose of true -> enotconn; false -> timeout end. get_max_diff() -> receive ok -> get_max_diff(0) after 10000 -> exit(timeout) end. get_max_diff(Max) -> T1 = millistamp(), receive ok -> Diff = millistamp() - T1, if Diff > Max -> get_max_diff(Diff); true -> get_max_diff(Max) end; {error,timeout} -> Diff = millistamp() - T1, if Diff > Max -> Diff; true -> Max end after 10000 -> exit(timeout) end. setup_closed_ao() -> Dir = filename:dirname(code:which(?MODULE)), {ok,R} = test_server:start_node(test_default_options_slave,slave, [{args,"-pa " ++ Dir}]), Host = list_to_atom(lists:nth(2,string:tokens(atom_to_list(node()),"@"))), {ok, L} = gen_tcp:listen(0, [{active,false},{packet,2}]), Fun = fun(F) -> receive {From,X} when is_function(X) -> From ! {self(),X()}, F(F); die -> ok end end, Pid = rpc:call(R,erlang,spawn,[fun() -> Fun(Fun) end]), {ok, Port} = inet:port(L), Remote = fun(Fu) -> Pid ! {self(), Fu}, receive {Pid,X} -> X end end, {ok, C} = Remote(fun() -> gen_tcp:connect(Host,Port, [{active,false},{packet,2}]) end), {ok,A} = gen_tcp:accept(L), gen_tcp:send(A,"Hello"), {ok, "Hello"} = Remote(fun() -> gen_tcp:recv(C,0) end), ok = Remote(fun() -> gen_tcp:close(C) end), Loop2 = fun(_,_,_,0) -> {failure, timeout}; (L2,{MA,MB},F2,N) -> case F2() of MA -> MA; MB -> MB; Other -> io:format("~p~n",[Other]), receive after 1000 -> ok end, L2(L2,{MA,MB},F2,N-1) end end, Loop = fun(Match2,F3) -> Loop2(Loop2,Match2,F3,10) end, test_server:stop_node(R), {Loop,A}. setup_timeout_sink(Timeout, AutoClose) -> Dir = filename:dirname(code:which(?MODULE)), {ok,R} = test_server:start_node(test_default_options_slave,slave, [{args,"-pa " ++ Dir}]), Host = list_to_atom(lists:nth(2,string:tokens(atom_to_list(node()),"@"))), {ok, L} = gen_tcp:listen(0, [{active,false},{packet,2}, {send_timeout,Timeout}, {send_timeout_close,AutoClose}]), Fun = fun(F) -> receive {From,X} when is_function(X) -> From ! {self(),X()}, F(F); die -> ok end end, Pid = rpc:call(R,erlang,spawn,[fun() -> Fun(Fun) end]), {ok, Port} = inet:port(L), Remote = fun(Fu) -> Pid ! {self(), Fu}, receive {Pid,X} -> X end end, {ok, C} = Remote(fun() -> gen_tcp:connect(Host,Port, [{active,false},{packet,2}]) end), {ok,A} = gen_tcp:accept(L), gen_tcp:send(A,"Hello"), {ok, "Hello"} = Remote(fun() -> gen_tcp:recv(C,0) end), Loop2 = fun(_,_,0) -> {failure, timeout}; (L2,F2,N) -> Ret = F2(), io:format("~p~n",[Ret]), case Ret of ok -> receive after 1 -> ok end, L2(L2,F2,N-1); Other -> Other end end, Loop = fun(F3) -> Loop2(Loop2,F3,1000) end, {Loop,A,R}. millistamp() -> {Mega, Secs, Micros} = erlang:now(), (Micros div 1000) + Secs * 1000 + Mega * 1000000000. has_superfluous_schedulers() -> case {erlang:system_info(schedulers), erlang:system_info(logical_processors)} of {S, unknown} when S > 1 -> true; {S, P} when S > P -> true; _ -> false end. otp_7731(suite) -> []; otp_7731(doc) -> "Leaking message from inet_drv {inet_reply,P,ok} " "when a socket sending resumes working after a send_timeout"; otp_7731(Config) when is_list(Config) -> ?line ServerPid = spawn_link(?MODULE, otp_7731_server, [self()]), ?line receive {ServerPid, ready, PortNum} -> ok end, ?line {ok, Socket} = gen_tcp:connect("localhost", PortNum, [binary, {active, false}, {packet, raw}, {send_timeout, 1000}]), otp_7731_send(Socket), io:format("Sending complete...\n",[]), ServerPid ! {self(), recv}, receive {ServerPid, ok} -> ok end, io:format("Client waiting for leaking messages...\n",[]), %% Now make sure inet_drv does not leak any internal messages. receive Msg -> ?line test_server:fail({unexpected, Msg}) after 1000 -> ok end, io:format("No leaking messages. Done.\n",[]), gen_tcp:close(Socket). otp_7731_send(Socket) -> Bin = <<1:10000>>, io:format("Client sending ~p bytes...\n",[size(Bin)]), ?line case gen_tcp:send(Socket, Bin) of ok -> otp_7731_send(Socket); {error,timeout} -> ok end. otp_7731_server(ClientPid) -> ?line {ok, LSocket} = gen_tcp:listen(0, [binary, {packet, raw}, {active, false}]), ?line {ok, {_, PortNum}} = inet:sockname(LSocket), io:format("Listening on ~w with port number ~p\n", [LSocket, PortNum]), ClientPid ! {self(), ready, PortNum}, {ok, CSocket} = gen_tcp:accept(LSocket), gen_tcp:close(LSocket), io:format("Server got connection, wait for recv order...\n",[]), receive {ClientPid, recv} -> ok end, io:format("Server start receiving...\n",[]), otp_7731_recv(CSocket), ClientPid ! {self(), ok}, io:format("Server finished, closing...\n",[]), gen_tcp:close(CSocket). otp_7731_recv(Socket) -> ?line case gen_tcp:recv(Socket, 0, 1000) of {ok, Bin} -> io:format("Server received ~p bytes\n",[size(Bin)]), otp_7731_recv(Socket); {error,timeout} -> io:format("Server got receive timeout\n",[]), ok end. %% OTP-7615: TCP-ports hanging in CLOSING state when sending large %% buffer followed by a recv() that returns error due to closed %% connection. zombie_sockets(suite) -> []; zombie_sockets(doc) -> ["OTP-7615 Leaking closed ports."]; zombie_sockets(Config) when is_list(Config) -> register(zombie_collector,self()), Calls = 10, Server = spawn_link(?MODULE, zombie_server,[self(), Calls]), ?line {Server, ready, PortNum} = receive Msg -> Msg end, io:format("Ports before = ~p\n",[lists:sort(erlang:ports())]), zombie_client_loop(Calls, PortNum), Ports = lists:sort(zombie_collector(Calls,[])), Server ! terminate, io:format("Collected ports = ~p\n",[Ports]), ?line [] = zombies_alive(Ports, 10), timer:sleep(1000), ok. zombie_client_loop(0, _) -> ok; zombie_client_loop(N, PortNum) when is_integer(PortNum) -> ?line {ok, Socket} = gen_tcp:connect("localhost", PortNum, [binary, {active, false}, {packet, raw}]), ?line gen_tcp:close(Socket), % to make server recv fail zombie_client_loop(N-1, PortNum). zombie_collector(0,Acc) -> Acc; zombie_collector(N,Acc) -> receive {closed, Socket} -> zombie_collector(N-1,[Socket|Acc]); E -> {unexpected, E, Acc} end. zombies_alive(Ports, WaitSec) -> Alive = lists:sort(erlang:ports()), io:format("Alive = ~p\n",[Alive]), Zombies = lists:filter(fun(P) -> lists:member(P, Alive) end, Ports), case Zombies of [] -> []; _ -> case WaitSec of 0 -> Zombies; _ -> timer:sleep(1000), % Wait some more for zombies to die zombies_alive(Zombies, WaitSec-1) end end. zombie_server(Pid, Calls) -> ?line {ok, LSocket} = gen_tcp:listen(0, [binary, {packet, raw}, {active, false}, {backlog, Calls}]), ?line {ok, {_, PortNum}} = inet:sockname(LSocket), io:format("Listening on ~w with port number ~p\n", [LSocket, PortNum]), BigBin = list_to_binary(lists:duplicate(100*1024, 77)), Pid ! {self(), ready, PortNum}, zombie_accept_loop(LSocket, BigBin, Calls), ?line terminate = receive Msg -> Msg end. zombie_accept_loop(_, _, 0) -> ok; zombie_accept_loop(Socket, BigBin, Calls) -> ?line case gen_tcp:accept(Socket) of {ok, NewSocket} -> spawn_link(fun() -> zombie_serve_client(NewSocket, BigBin) end), zombie_accept_loop(Socket, BigBin, Calls-1); E -> E end. zombie_serve_client(Socket, Bin) -> %%io:format("Got connection on ~p\n",[Socket]), ?line gen_tcp:send(Socket, Bin), %%io:format("Sent data, waiting for reply on ~p\n",[Socket]), ?line case gen_tcp:recv(Socket, 4) of {error,closed} -> ok; {error,econnaborted} -> ok % may be returned on Windows end, %%io:format("Closing ~p\n",[Socket]), ?line gen_tcp:close(Socket), zombie_collector ! {closed, Socket}. otp_7816(suite) -> []; otp_7816(doc) -> "Hanging send on windows when sending iolist with more than 16 binaries."; otp_7816(Config) when is_list(Config) -> Client = self(), ?line Server = spawn_link(fun()-> otp_7816_server(Client) end), ?line receive {Server, ready, PortNum} -> ok end, ?line {ok, Socket} = gen_tcp:connect("localhost", PortNum, [binary, {active, false}, {packet, 4}, {send_timeout, 10}]), %% We use the undocumented feature that sending can be resumed after %% a send_timeout without any data loss if the peer starts to receive data. %% Unless of course the 7816-bug is in affect, in which case the write event %% for the socket is lost on windows and not all data is sent. [otp_7816_send(Socket,18,BinSize,Server) || BinSize <- lists:seq(1000, 2000, 123)], io:format("Sending complete...\n",[]), ?line ok = gen_tcp:close(Socket), Server ! {self(), closed}, ?line {Server, closed} = receive M -> M end. otp_7816_send(Socket, BinNr, BinSize, Server) -> Data = lists:duplicate(BinNr, <<1:(BinSize*8)>>), SentBytes = otp_7816_send_data(Socket, Data, 0) * BinNr * BinSize, io:format("Client sent ~p bytes...\n",[SentBytes]), Server ! {self(),recv,SentBytes}, ?line {Server, ok} = receive M -> M end. otp_7816_send_data(Socket, Data, Loops) -> io:format("Client sending data...\n",[]), case gen_tcp:send(Socket, Data) of ok -> otp_7816_send_data(Socket,Data, Loops+1); {error,timeout} -> Loops+1 end. otp_7816_server(Client) -> ?line {ok, LSocket} = gen_tcp:listen(0, [binary, {packet, 4}, {active, false}]), ?line {ok, {_, PortNum}} = inet:sockname(LSocket), io:format("Listening on ~w with port number ~p\n", [LSocket, PortNum]), Client ! {self(), ready, PortNum}, ?line {ok, CSocket} = gen_tcp:accept(LSocket), io:format("Server got connection...\n",[]), ?line gen_tcp:close(LSocket), otp_7816_server_loop(CSocket), io:format("Server terminating.\n",[]). otp_7816_server_loop(CSocket) -> io:format("Server waiting for order...\n",[]), receive {Client, recv, RecvBytes} -> io:format("Server start receiving...\n",[]), ?line ok = otp_7816_recv(CSocket, RecvBytes), Client ! {self(), ok}, otp_7816_server_loop(CSocket); {Client, closed} -> ?line {error, closed} = gen_tcp:recv(CSocket, 0, 1000), Client ! {self(), closed} end. otp_7816_recv(_, 0) -> io:format("Server got all.\n",[]), ok; otp_7816_recv(CSocket, BytesLeft) -> ?line case gen_tcp:recv(CSocket, 0, 1000) of {ok, Bin} when byte_size(Bin) =< BytesLeft -> io:format("Server received ~p of ~p bytes.\n",[size(Bin), BytesLeft]), otp_7816_recv(CSocket, BytesLeft - byte_size(Bin)); {error,timeout} -> io:format("Server got receive timeout when expecting more data\n",[]), error end. otp_8102(doc) -> ["Receive a packet with a faulty packet header"]; otp_8102(suite) -> []; otp_8102(Config) when is_list(Config) -> ?line {ok, LSocket} = gen_tcp:listen(0, []), ?line {ok, {_, PortNum}} = inet:sockname(LSocket), io:format("Listening on ~w with port number ~p\n", [LSocket, PortNum]), [otp_8102_do(LSocket, PortNum, otp_8102_packet(Type,Size)) || Size <- lists:seq(-10,-1), Type <- [4, {cdr,big}, {cdr,little}]], gen_tcp:close(LSocket), ok. otp_8102_packet(4, Size) -> {<>, 4}; otp_8102_packet({cdr,big}, Size) -> {<<"GIOP",0,0,0,0,Size:32/big>>, cdr}; otp_8102_packet({cdr,little}, Size) -> {<<"GIOP",0,0,1,0,Size:32/little>>, cdr}. otp_8102_do(LSocket, PortNum, {Bin,PType}) -> io:format("Connect with packet option ~p ...\n",[PType]), ?line {ok, RSocket} = gen_tcp:connect("localhost", PortNum, [binary, {packet,PType}, {active,true}]), ?line {ok, SSocket} = gen_tcp:accept(LSocket), io:format("Got connection, sending ~p...\n",[Bin]), ?line ok = gen_tcp:send(SSocket, Bin), io:format("Sending complete...\n",[]), ?line {tcp_error,RSocket,emsgsize} = receive M -> M end, io:format("Got error msg, ok.\n",[]), gen_tcp:close(SSocket), gen_tcp:close(RSocket).