Mercurial > hg > nginx-tests
view http_resolver_cleanup.t @ 1215:26884729e06b
Tests: cope with resolver resend in mail resolver tests.
Currently, if resolver didn't find PTR type in the answer section of PTR
response, it keeps the node in the resend queue until the next timer event.
author | Sergey Kandaurov <pluknet@nginx.com> |
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date | Thu, 31 Aug 2017 19:09:04 +0300 |
parents | 78cb8e66b6bc |
children | e4974af3fb12 |
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#!/usr/bin/perl # (C) Sergey Kandaurov # (C) Nginx, Inc. # Tests for http resolver, worker process termination. ############################################################################### use warnings; use strict; use Test::More; BEGIN { use FindBin; chdir($FindBin::Bin); } use lib 'lib'; use Test::Nginx; ############################################################################### select STDERR; $| = 1; select STDOUT; $| = 1; my $t = Test::Nginx->new()->has(qw/http proxy/); plan(skip_all => 'win32') if $^O eq 'MSWin32'; plan(skip_all => 'use-after-free on shutdown') unless $ENV{TEST_NGINX_UNSAFE} or $t->has_version('1.11.8'); $t->write_file_expand('nginx.conf', <<'EOF')->plan(1); %%TEST_GLOBALS%% daemon off; events { } http { %%TEST_GLOBALS_HTTP%% server { listen 127.0.0.1:8080; server_name localhost; location / { resolver 127.0.0.1:%%PORT_8081_UDP%%; proxy_pass http://example.net/$args; } location /pid { add_header X-Pid $pid always; } } } EOF $t->run_daemon(\&dns_daemon, $t); $t->run()->waitforfile($t->testdir . '/' . port(8081)); ############################################################################### # truncated UDP response, no response over TCP my $s = http_get('/', start => 1); pass('request'); sleep 1; # retrasmission timer wasn't removed during resolver cleanup, # while the event memory was freed, resulting in use-after-free # when later removing timer in TCP connection http_get('/pid') =~ qr/X-Pid: (\d+)/; kill 'TERM', $1; ############################################################################### sub dns_daemon { my ($t) = @_; my ($data); my $socket = IO::Socket::INET->new( LocalAddr => '127.0.0.1', LocalPort => port(8081), Proto => 'udp', ) or die "Can't create UDP socket: $!\n"; # signal we are ready open my $fh, '>', $t->testdir() . '/' . port(8081); close $fh; while (1) { $socket->recv($data, 65536); # truncation bit set $data |= pack("n2", 0, 0x8380); $socket->send($data); } } ###############################################################################