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-rw-r--r--lib/kernel/test/gen_tcp_misc_SUITE.erl41
1 files changed, 40 insertions, 1 deletions
diff --git a/lib/kernel/test/gen_tcp_misc_SUITE.erl b/lib/kernel/test/gen_tcp_misc_SUITE.erl
index 929f66d400..2f28806339 100644
--- a/lib/kernel/test/gen_tcp_misc_SUITE.erl
+++ b/lib/kernel/test/gen_tcp_misc_SUITE.erl
@@ -52,7 +52,7 @@
active_once_closed/1, send_timeout/1, send_timeout_active/1,
otp_7731/1, zombie_sockets/1, otp_7816/1, otp_8102/1,
wrapping_oct/0, wrapping_oct/1,
- otp_9389/1]).
+ otp_9389/1, otp_13939/1]).
%% Internal exports.
-export([sender/3, not_owner/1, passive_sockets_server/2, priority_server/1,
@@ -3014,3 +3014,42 @@ ok({ok,V}) -> V.
get_hostname(Name) ->
"@"++Host = lists:dropwhile(fun(C) -> C =/= $@ end, atom_to_list(Name)),
Host.
+
+otp_13939(doc) ->
+ ["Check that writing to a remotely closed socket doesn't block forever "
+ "when exit_on_close is false."];
+otp_13939(suite) ->
+ [];
+otp_13939(Config) when is_list(Config) ->
+ {Pid, Ref} = spawn_opt(
+ fun() ->
+ {ok, Listener} = gen_tcp:listen(0, [{exit_on_close, false}]),
+ {ok, Port} = inet:port(Listener),
+
+ spawn_link(
+ fun() ->
+ {ok, Client} = gen_tcp:connect("localhost", Port,
+ [{active, false}]),
+ ok = gen_tcp:close(Client)
+ end),
+
+ {ok, Accepted} = gen_tcp:accept(Listener),
+
+ ok = gen_tcp:send(Accepted, <<0:(10*1024*1024*8)>>),
+
+ %% The bug surfaces when there's a delay between the send
+ %% operations; inet:getstat is a red herring.
+ timer:sleep(100),
+
+ {error, Code} = gen_tcp:send(Accepted, <<0:(10*1024*1024*8)>>),
+ ct:pal("gen_tcp:send returned ~p~n", [Code])
+ end, [link, monitor]),
+
+ receive
+ {'DOWN', Ref, process, Pid, normal} ->
+ ok
+ after 1000 ->
+ demonitor(Ref, [flush]),
+ exit(Pid, normal),
+ ct:fail("Server process blocked on send.")
+ end.