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| author | Lukas Larsson <[email protected]> | 2018-06-21 11:00:25 +0200 |
|---|---|---|
| committer | Lukas Larsson <[email protected]> | 2018-07-30 16:55:26 +0200 |
| commit | a9d361b4be7d6329bedd7b37d454c1abf4f27233 (patch) | |
| tree | a55a060d66bad33cff29fe00ab1ac1b171a4ce74 /lib/kernel/test | |
| parent | 83445d0de88a1ad15066e6c415b2c2d9aa93d6a1 (diff) | |
| download | otp-a9d361b4be7d6329bedd7b37d454c1abf4f27233.tar.gz otp-a9d361b4be7d6329bedd7b37d454c1abf4f27233.tar.bz2 otp-a9d361b4be7d6329bedd7b37d454c1abf4f27233.zip | |
erts: Limit the automatic max buffer for UDP to 2^16
There is no reason to have a larger buffer than this as
the recvmsg call will never return more data.
OTP-15206
Diffstat (limited to 'lib/kernel/test')
| -rw-r--r-- | lib/kernel/test/gen_udp_SUITE.erl | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/lib/kernel/test/gen_udp_SUITE.erl b/lib/kernel/test/gen_udp_SUITE.erl index b39399b18a..3acfff929e 100644 --- a/lib/kernel/test/gen_udp_SUITE.erl +++ b/lib/kernel/test/gen_udp_SUITE.erl @@ -34,7 +34,7 @@ -export([init_per_testcase/2, end_per_testcase/2]). -export([send_to_closed/1, active_n/1, - buffer_size/1, binary_passive_recv/1, bad_address/1, + buffer_size/1, binary_passive_recv/1, max_buffer_size/1, bad_address/1, read_packets/1, open_fd/1, connect/1, implicit_inet6/1, local_basic/1, local_unbound/1, local_fdopen/1, local_fdopen_unbound/1, local_abstract/1]). @@ -44,7 +44,7 @@ suite() -> {timetrap,{minutes,1}}]. all() -> - [send_to_closed, buffer_size, binary_passive_recv, + [send_to_closed, buffer_size, binary_passive_recv, max_buffer_size, bad_address, read_packets, open_fd, connect, implicit_inet6, active_n, {group, local}]. @@ -237,6 +237,14 @@ buffer_size_server_recv(Socket, IP, Port, Cnt) -> end. +%%------------------------------------------------------------- +%% OTP-15206: Keep buffer small for udp +%%------------------------------------------------------------- +max_buffer_size(Config) when is_list(Config) -> + {ok, Socket} = gen_udp:open(0, [binary]), + ok = inet:setopts(Socket,[{recbuf, 1 bsl 20}]), + {ok, [{buffer, 65536}]} = inet:getopts(Socket,[buffer]), + gen_udp:close(Socket). %%------------------------------------------------------------- %% OTP-3823 gen_udp:recv does not return address in binary mode |