Mercurial > hg > nginx-tests
view upstream.t @ 572:ca54b445d982
Tests: masked nginx bug in proxy next upstream.
When iterating through several next upstreams per a worker cycle,
a previously reported event about upstream connection error may
be improperly applied to the next upstream, thus leading to the
invalid connection error. E.g., in kqueue, where the problem is
visible, this is caused by "ev->instance" that does not tolerate
more than one next upstream at once, and kevents placed on the
kqueue separately for read and write events.
The change is to limit test case to the only one next upstream.
author | Sergey Kandaurov <pluknet@nginx.com> |
---|---|
date | Thu, 14 May 2015 11:54:24 +0300 |
parents | e7dc8f4d0a4b |
children | e9064d691790 |
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#!/usr/bin/perl # (C) Maxim Dounin # Tests for upstream module and balancers. ############################################################################### 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(3); $t->write_file_expand('nginx.conf', <<'EOF'); %%TEST_GLOBALS%% daemon off; events { } http { %%TEST_GLOBALS_HTTP%% upstream u { server 127.0.0.1:8081 max_fails=3 fail_timeout=10s; server 127.0.0.1:8082 max_fails=3 fail_timeout=10s; } upstream u2 { server 127.0.0.1:8081 max_fails=3 fail_timeout=10s; server 127.0.0.1:8082 max_fails=3 fail_timeout=10s; } server { listen 127.0.0.1:8080; server_name localhost; location / { proxy_pass http://u; } location /close2 { proxy_pass http://u2; } } } EOF $t->run_daemon(\&http_daemon, 8081); $t->run_daemon(\&http_daemon, 8082); $t->run(); $t->waitforsocket('127.0.0.1:8081'); $t->waitforsocket('127.0.0.1:8082'); ############################################################################### is(many('/', 30), '8081: 15, 8082: 15', 'balanced'); # from 9 first requests to 8081, only 6 will be successful, # 3rd, 6th, and 9th requests will fail; after this the backend # will be considered down and won't be used till fail_timeout passes is(many('/close', 30), '8081: 6, 8082: 24', 'failures'); SKIP: { skip 'long test', 1 unless $ENV{TEST_NGINX_UNSAFE}; # bug: failures counter is reset if first request in a second succeeds # # delay added to make sure first 9 requests will take more than 1s; # note that the test is racy and may unexpectedly succeed is(many('/close2', 30, delay => 0.2), '8081: 6, 8082: 24', 'failures delay'); } ############################################################################### sub many { my ($uri, $count, %opts) = @_; my %ports; for (1 .. $count) { if (http_get($uri) =~ /X-Port: (\d+)/) { $ports{$1} = 0 unless defined $ports{$1}; $ports{$1}++; } select undef, undef, undef, $opts{delay} if $opts{delay}; } return join ', ', map { $_ . ": " . $ports{$_} } sort keys %ports; } ############################################################################### sub http_daemon { my ($port) = @_; my $count = 1; my $server = IO::Socket::INET->new( Proto => 'tcp', LocalHost => '127.0.0.1', LocalPort => $port, Listen => 5, Reuse => 1 ) or die "Can't create listening socket: $!\n"; local $SIG{PIPE} = 'IGNORE'; while (my $client = $server->accept()) { $client->autoflush(1); my $headers = ''; my $uri = ''; while (<$client>) { $headers .= $_; last if (/^\x0d?\x0a?$/); } $uri = $1 if $headers =~ /^\S+\s+([^ ]+)\s+HTTP/i; if ($uri =~ 'close' && $port == 8081 && $count++ % 3 == 0) { next; } print $client <<EOF; HTTP/1.1 200 OK Connection: close X-Port: $port OK EOF close $client; } } ###############################################################################