diff options
| -rw-r--r-- | lib/diameter/test/diameter_gen_tcp_SUITE.erl | 67 |
1 files changed, 52 insertions, 15 deletions
diff --git a/lib/diameter/test/diameter_gen_tcp_SUITE.erl b/lib/diameter/test/diameter_gen_tcp_SUITE.erl index 7e232edb44..4b542e0156 100644 --- a/lib/diameter/test/diameter_gen_tcp_SUITE.erl +++ b/lib/diameter/test/diameter_gen_tcp_SUITE.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2013. All Rights Reserved. +%% Copyright Ericsson AB 2014-2015. 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 @@ -18,10 +18,10 @@ %% %% -%% Some gen_sctp-specific tests demonstrating problems that were +%% Some gen_tcp-specific tests demonstrating problems that were %% encountered during diameter development but have nothing -%% specifically to do with diameter. At least one of them can cause -%% diameter_traffic_SUITE testcases to fail. +%% specifically to do with diameter. These can cause testcases in +%% other suites to fail. %% -module(diameter_gen_tcp_SUITE). @@ -30,7 +30,8 @@ all/0]). %% testcases --export([send_long/1]). +-export([send_long/1, + connect/1]). -define(LOOPBACK, {127,0,0,1}). -define(GEN_OPTS, [binary, {active, true}, {ip, ?LOOPBACK}]). @@ -41,7 +42,8 @@ suite() -> [{timetrap, {minutes, 2}}]. all() -> - [send_long]. + [connect, %% Appears to fail only when run first. + send_long]. %% =========================================================================== @@ -87,15 +89,6 @@ connect(PortNr, LPid) -> LPid ! {self(), fun(B) -> send(Sock, B) end}, down(LPid). -%% down/1 - -down(Pid) - when is_pid(Pid) -> - down(erlang:monitor(process, Pid)); - -down(MRef) -> - receive {'DOWN', MRef, process, _, Reason} -> Reason end. - %% send/2 %% %% Send from a spawned process just to avoid sending from the @@ -104,3 +97,47 @@ down(MRef) -> send(Sock, Bin) -> {_, MRef} = spawn_monitor(fun() -> exit(gen_tcp:send(Sock, Bin)) end), down(MRef). + +%% =========================================================================== + +%% connect/1 +%% +%% Test that simultaneous connections succeed. This fails sporadically +%% on OS X at the time of writing, when gen_tcp:connect/2 returns +%% {error, econnreset}. + +connect(_) -> + {ok, LSock} = gen_tcp:listen(0, ?GEN_OPTS), + {ok, {_,PortNr}} = inet:sockname(LSock), + Count = lists:seq(1,8), %% 8 simultaneous connects + As = [gen_accept(LSock) || _ <- Count], + %% Wait for spawned processes to have called gen_tcp:accept/1 + %% (presumably). + receive after 2000 -> ok end, + Cs = [gen_connect(PortNr) || _ <- Count], + [] = failures(Cs), + [] = failures(As). + +failures(Monitors) -> + [RC || {_, MRef} <- Monitors, RC <- [down(MRef)], ok /= element(1, RC)]. + +gen_accept(LSock) -> + spawn_monitor(fun() -> + exit(gen_tcp:accept(LSock)) + end). + +gen_connect(PortNr) -> + spawn_monitor(fun() -> + exit(gen_tcp:connect(?LOOPBACK, PortNr, ?GEN_OPTS)) + end). + +%% =========================================================================== + +%% down/1 + +down(Pid) + when is_pid(Pid) -> + down(monitor(process, Pid)); + +down(MRef) -> + receive {'DOWN', MRef, process, _, Reason} -> Reason end. |