Mercurial > hg > nginx-tests
view memcached_keepalive_stale.t @ 1938:e1059682aeef
Tests: fixed ClientHello with resending Initial QUIC packets.
Previously it was rebuilt each time using distinct ClientHello.random
resulting in different CRYPTO payload. As such, it led to TLS digest
hash and derived secrets mismatch when resending Initial packet. Now
ClientHello is built once and reused when resending Initial packets.
Additionally, this required to preserve a generated secret value used
in shared secret calculation as part of TLS key schedule. Previously
it was regenerated when receiving a Retry packet, but this won't work
with reused ClientHello as the resulting shared secrets won't match.
author | Sergey Kandaurov <pluknet@nginx.com> |
---|---|
date | Wed, 30 Aug 2023 02:22:58 +0400 |
parents | 882267679006 |
children |
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#!/usr/bin/perl # (C) Maxim Dounin # Test for stale events handling in upstream keepalive. ############################################################################### 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; eval { require Cache::Memcached; }; plan(skip_all => 'Cache::Memcached not installed') if $@; my $t = Test::Nginx->new()->has(qw/http memcached upstream_keepalive rewrite/) ->has_daemon('memcached')->plan(1) ->write_file_expand('nginx.conf', <<'EOF'); %%TEST_GLOBALS%% daemon off; worker_processes 2; events { } http { %%TEST_GLOBALS_HTTP%% upstream memd { server 127.0.0.1:8081; keepalive 1; } server { listen 127.0.0.1:8080 sndbuf=32k; server_name localhost; location / { set $memcached_key $uri; memcached_pass memd; } } } EOF my $memhelp = `memcached -h`; my @memopts1 = (); if ($memhelp =~ /repcached/) { # repcached patches adds additional listen socket memcached # that should be different too push @memopts1, '-X', port(8082); } if ($memhelp =~ /-U/) { # UDP ports no longer off by default in memcached 1.2.7+ push @memopts1, '-U', '0'; } if ($memhelp =~ /-t/) { # for connection stats consistency in threaded memcached 1.3+ push @memopts1, '-t', '1'; } $t->run_daemon('memcached', '-l', '127.0.0.1', '-p', port(8081), @memopts1); $t->run(); $t->waitforsocket('127.0.0.1:' . port(8081)) or die "Unable to start memcached"; ############################################################################### my $memd1 = Cache::Memcached->new(servers => [ '127.0.0.1:' . port(8081) ], connect_timeout => 1.0); # It's possible that stale events occur, i.e. read event handler called # for just saved upstream connection without any data available for # read. We shouldn't close upstream connection in such situation. # # This happens due to reading from upstream connection on downstream write # events. More likely to happen with multiple workers due to use of posted # events. # # Stale event may only happen if reading response from upstream requires # entering event loop, i.e. response should be big enough. On the other # hand, it is less likely to occur with full client's connection output # buffer. # # We use here 2 workers, 20k response and set output buffer on clients # connection to 32k. This allows more or less reliably reproduce stale # events at least on FreeBSD testbed here. $memd1->set('/big', 'X' x 20480); my $total = $memd1->stats()->{total}->{total_connections}; for (1 .. 100) { http_get('/big'); } cmp_ok($memd1->stats()->{total}->{total_connections}, '<=', $total + 2, 'only one connection per worker used'); ###############################################################################