Mercurial > hg > nginx-tests
view stream_udp_proxy.t @ 1825:3629eda94c1b
Tests: handling of EWOULDBLOCK from sysread() with IO::Socket::SSL.
With IO::Socket::SSL, when select() reports that the socket is readable,
reading from it might still fail with EWOULDBLOCK, since no application
data is available in the socket. In particular, this might happen with
TLSv1.3 when a session ticket is received after the handshake. Fix is
to explicitly check for EWOULDBLOCK errors.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Tue, 21 Mar 2023 02:57:39 +0300 |
parents | 5ac6efbe5552 |
children |
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#!/usr/bin/perl # (C) Nginx, Inc. # Tests for stream proxy module with datagrams. ############################################################################### use warnings; use strict; use Test::More; BEGIN { use FindBin; chdir($FindBin::Bin); } use lib 'lib'; use Test::Nginx; use Test::Nginx::Stream qw/ dgram /; ############################################################################### select STDERR; $| = 1; select STDOUT; $| = 1; my $t = Test::Nginx->new()->has(qw/stream udp/)->plan(8) ->write_file_expand('nginx.conf', <<'EOF'); %%TEST_GLOBALS%% daemon off; events { } stream { %%TEST_GLOBALS_STREAM%% proxy_timeout 1s; server { listen 127.0.0.1:%%PORT_8980_UDP%% udp; proxy_pass 127.0.0.1:%%PORT_8981_UDP%%; proxy_responses 0; } server { listen 127.0.0.1:%%PORT_8982_UDP%% udp; proxy_pass 127.0.0.1:%%PORT_8981_UDP%%; proxy_responses 2; } server { listen 127.0.0.1:%%PORT_8983_UDP%% udp; proxy_pass 127.0.0.1:%%PORT_8981_UDP%%; } } EOF $t->run_daemon(\&udp_daemon, port(8981), $t); $t->run(); $t->waitforfile($t->testdir . '/' . port(8981)); ############################################################################### my $s = dgram('127.0.0.1:' . port(8980)); is($s->io('1', read => 1, read_timeout => 0.5), '', 'proxy responses 0'); $s = dgram('127.0.0.1:' . port(8982)); is($s->io('1'), '1', 'proxy responses 1'); $s = dgram('127.0.0.1:' . port(8982)); is($s->io('2', read => 2), '12', 'proxy responses 2'); $s = dgram('127.0.0.1:' . port(8983)); is($s->io('3', read => 3), '123', 'proxy responses default'); # zero-length payload $s = dgram('127.0.0.1:' . port(8982)); $s->write(''); is($s->read(), 'zero', 'upstream read zero bytes'); is($s->read(), '', 'upstream sent zero bytes'); $s->write(''); is($s->read(), 'zero', 'upstream read zero bytes again'); is($s->read(), '', 'upstream sent zero bytes again'); ############################################################################### sub udp_daemon { my ($port, $t) = @_; my $server = IO::Socket::INET->new( Proto => 'udp', LocalAddr => '127.0.0.1:' . port(8981), Reuse => 1, ) or die "Can't create listening socket: $!\n"; # signal we are ready open my $fh, '>', $t->testdir() . '/' . port(8981); close $fh; while (1) { $server->recv(my $buffer, 65536); if (length($buffer) > 0) { $server->send($_) for (1 .. $buffer); } else { $server->send('zero'); select undef, undef, undef, 0.2; $server->send(''); } } } ###############################################################################