Mercurial > hg > nginx-tests
view upstream_max_conns.t @ 1571:1b4ceab9cb1c
Tests: fixed ssl_certificate.t with LibreSSL client.
Net::SSLeay::connect() that manages TLS handshake could return unexpected
error when receiving server alert, as seen in server certificate tests if
it could not been selected. Typically, it returns the expected error -1,
but with certain libssl implementations it can be 0, as explained below.
The error is propagated from libssl's SSL_connect(), which is usually -1.
In modern OpenSSL versions, it is the default error code used in the state
machine returned when something went wrong with parsing TLS message header.
In versions up to OpenSSL 1.0.2, with SSLv23_method() used by default, -1
is the only error code in the ssl_connect() method implementation which is
used as well if receiving alert while parsing ServerHello. BoringSSL also
seems to return -1. But it is not so with LibreSSL that returns zero.
Previously, tests failed with client built with LibreSSL with SSLv3 removed.
Here, the error is propagated directly from ssl_read_bytes() method, which
is always implemented as ssl3_read_bytes() in all TLS methods. It could be
also seen with OpenSSL up to 1.0.2 with non-default methods explicitly set.
author | Sergey Kandaurov <pluknet@nginx.com> |
---|---|
date | Fri, 29 May 2020 23:10:20 +0300 |
parents | 3c101e516213 |
children |
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#!/usr/bin/perl # (C) Nginx, Inc. # Tests for upstream module with max_conns feature. ############################################################################### use warnings; use strict; use Test::More; use IO::Select; BEGIN { use FindBin; chdir($FindBin::Bin); } use lib 'lib'; use Test::Nginx qw/ :DEFAULT http_end /; ############################################################################### select STDERR; $| = 1; select STDOUT; $| = 1; my $t = Test::Nginx->new()->has(qw/http proxy rewrite upstream_least_conn/) ->has(qw/upstream_ip_hash upstream_hash/)->plan(16); $t->write_file_expand('nginx.conf', <<'EOF'); %%TEST_GLOBALS%% daemon off; events { } http { %%TEST_GLOBALS_HTTP%% upstream u_unlim { server 127.0.0.1:8081 max_conns=0; server 127.0.0.1:8082; } upstream u_lim { server 127.0.0.1:8081 max_conns=3; } upstream u_backup { server 127.0.0.1:8081 max_conns=2; server 127.0.0.1:8082 backup; } upstream u_backup_lim { server 127.0.0.1:8081 max_conns=2; server 127.0.0.1:8082 backup max_conns=3; } upstream u_two { server 127.0.0.1:8081 max_conns=1; server 127.0.0.1:8082 max_conns=1; } upstream u_some { server 127.0.0.1:8081 max_conns=1; server 127.0.0.1:8082; } upstream u_many { server 127.0.0.1:8081 max_conns=1; server 127.0.0.1:8081 max_conns=1; server 127.0.0.1:8082; } upstream u_weight { server 127.0.0.1:8081 weight=2 max_conns=1; server 127.0.0.1:8082; } upstream u_pnu { # special server to force next upstream server 127.0.0.1:8084; server 127.0.0.1:8081 max_conns=1; server 127.0.0.1:8082 max_conns=2; } upstream u_lc { least_conn; server 127.0.0.1:8081 max_conns=1; server 127.0.0.1:8082; } upstream u_lc_backup { least_conn; server 127.0.0.1:8081 max_conns=2; server 127.0.0.1:8082 backup; } upstream u_lc_backup_lim { least_conn; server 127.0.0.1:8081 max_conns=2; server 127.0.0.1:8082 backup max_conns=3; } upstream u_ih { ip_hash; server 127.0.0.1:8081 max_conns=1; server 127.0.0.1:8082 max_conns=2; } upstream u_hash { hash $remote_addr; server 127.0.0.1:8081 max_conns=1; server 127.0.0.1:8082 max_conns=2; } upstream u_chash { hash $remote_addr consistent; server 127.0.0.1:8081 max_conns=1; server 127.0.0.1:8082 max_conns=2; } server { listen 127.0.0.1:8084; server_name localhost; location / { return 444; } } server { listen 127.0.0.1:8080; server_name localhost; proxy_http_version 1.1; proxy_set_header Connection ""; proxy_buffering off; location /u { proxy_pass http:/$uri; } location /close { proxy_pass http://127.0.0.1:8085; } } } EOF $t->run_daemon(\&http_daemon, port(8081), port(8082), port(8085)); $t->run(); $t->waitforsocket('127.0.0.1:' . port(8081)); $t->waitforsocket('127.0.0.1:' . port(8082)); $t->waitforsocket('127.0.0.1:' . port(8085)); ############################################################################### my @ports = my ($p1, $p2) = (port(8081), port(8082)); # two peers without max_conns is(parallel('/u_unlim?delay=0', 4), "$p1: 2, $p2: 2", 'unlimited'); # reopen connection to test connection subtraction my @s = http_get_multi('/u_lim', 2, 1.1); http_get('/u_lim/close'); push @s, http_get_multi('/u_lim', 1, 1.1); http_get('/closeall'); is(http_end_multi(\@s), "$p1: 3", 'conn subtraction'); # simple test with limited peer is(parallel('/u_lim', 4), "$p1: 3", 'single'); # limited peer with backup peer is(peers('/u_backup', 6), "$p1 $p1 $p2 $p2 $p2 $p2", 'backup'); # peer and backup peer, both limited is(peers('/u_backup_lim', 6), "$p1 $p1 $p2 $p2 $p2 ", 'backup limited'); # all peers limited is(parallel('/u_two', 4), "$p1: 1, $p2: 1", 'all peers'); # subset of peers limited is(parallel('/u_some', 4), "$p1: 1, $p2: 3", 'some peers'); # ensure that peer "weight" does not affect its max_conns limit is(parallel('/u_weight', 4), "$p1: 1, $p2: 3", 'weight'); # peers with equal server value aggregate max_conns limit is(parallel('/u_many', 6), "$p1: 2, $p2: 4", 'equal peer'); # connections to peer selected with proxy_next_upstream are counted is(parallel('/u_pnu', 4), "$p1: 1, $p2: 2", 'proxy_next_upstream'); # least_conn balancer tests is(parallel('/u_lc', 4), "$p1: 1, $p2: 3", 'least_conn'); is(peers('/u_lc_backup', 6), "$p1 $p1 $p2 $p2 $p2 $p2", 'least_conn backup'); is(peers('/u_lc_backup_lim', 6), "$p1 $p1 $p2 $p2 $p2 ", 'least_conn backup limited'); # ip_hash balancer tests is(parallel('/u_ih', 4), "$p1: 1, $p2: 2", 'ip_hash'); # hash balancer tests is(parallel('/u_hash', 4), "$p1: 1, $p2: 2", 'hash'); is(parallel('/u_chash', 4), "$p1: 1, $p2: 2", 'hash consistent'); ############################################################################### sub peers { my ($uri, $count) = @_; my @sockets = http_get_multi($uri, $count, 1.1); http_get('/closeall'); join ' ', map { /X-Port: (\d+)/ && $1 } map { http_end $_ } (@sockets); } sub parallel { my ($uri, $count) = @_; my @sockets = http_get_multi($uri, $count); for (1 .. 20) { last if IO::Select->new(@sockets)->can_read(3) == $count; select undef, undef, undef, 0.01; } http_get('/closeall'); return http_end_multi(\@sockets); } sub http_get_multi { my ($uri, $count, $wait) = @_; my @sockets; for (0 .. $count - 1) { $sockets[$_] = http_get($uri, start => 1); IO::Select->new($sockets[$_])->can_read($wait) if $wait; } return @sockets; } sub http_end_multi { my ($sockets) = @_; my %ports; for my $sock (@$sockets) { if (http_end($sock) =~ /X-Port: (\d+)/) { $ports{$1} = 0 unless defined $ports{$1}; $ports{$1}++; } close $sock; } my @keys = map { my $p = $_; grep { $p == $_ } keys %ports } @ports; return join ', ', map { $_ . ": " . $ports{$_} } @keys; } ############################################################################### sub http_daemon { my (@ports) = @_; my (@socks, @clients); for my $port (@ports) { my $server = IO::Socket::INET->new( Proto => 'tcp', LocalHost => "127.0.0.1:$port", Listen => 42, Reuse => 1 ) or die "Can't create listening socket: $!\n"; push @socks, $server; } my $sel = IO::Select->new(@socks); my $skip = 4; my $count = 0; local $SIG{PIPE} = 'IGNORE'; OUTER: while (my @ready = $sel->can_read) { foreach my $fh (@ready) { if (grep $_ == $fh, @socks) { my $new = $fh->accept; $new->autoflush(1); $sel->add($new); $count++; } else { my @busy = grep { $_->sockport() } @ready; # finish other handles if ($fh->sockport() == port(8085) && @busy > 1 && grep $_->sockport() != port(8085), @busy) { next; } # late events in other handles if ($fh->sockport() == port(8085) && @busy == 1 && $count > 1 && $skip-- > 0) { select undef, undef, undef, 0.1; next OUTER; } my $rv = process_socket($fh, \@clients); if ($rv == 1) { $sel->remove($fh); $fh->close; } if ($rv == 2) { for (@clients) { $sel->remove($_); $_->close; } $sel->remove($fh); $fh->close; $skip = 4; } $count--; } } } } # Returns true to close connection sub process_socket { my ($client, $saved) = @_; my $port = $client->sockport(); my $headers = ''; my $uri = ''; while (<$client>) { $headers .= $_; last if (/^\x0d?\x0a?$/); } return 1 if $headers eq ''; $uri = $1 if $headers =~ /^\S+\s+([^ ]+)\s+HTTP/i; return 1 if $uri eq ''; Test::Nginx::log_core('||', "$port: response, 200"); print $client <<EOF; HTTP/1.1 200 OK X-Port: $port OK EOF return 2 if $uri =~ /closeall/; return 1 if $uri =~ /close/; push @$saved, $client; return 0; } ###############################################################################