blob: 6be94761a33c0ebf03effd09d20c79f1684807f6 [file] [log] [blame]
#!/usr/bin/perl
# (C) Sergey Kandaurov
# (C) Nginx, Inc.
# Stream tests for upstream least_conn balancer 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 stream_upstream_least_conn udp/)
->plan(2)->write_file_expand('nginx.conf', <<'EOF');
%%TEST_GLOBALS%%
daemon off;
events {
}
stream {
%%TEST_GLOBALS_STREAM%%
proxy_responses 1;
proxy_timeout 1s;
upstream u {
least_conn;
server 127.0.0.1:%%PORT_8981_UDP%%;
server 127.0.0.1:%%PORT_8982_UDP%%;
}
server {
listen 127.0.0.1:%%PORT_8980_UDP%% udp;
proxy_pass u;
}
}
EOF
$t->run_daemon(\&udp_daemon, port(8981), $t);
$t->run_daemon(\&udp_daemon, port(8982), $t);
$t->run();
$t->waitforfile($t->testdir . '/' . port(8981));
$t->waitforfile($t->testdir . '/' . port(8982));
###############################################################################
my @ports = my ($port1, $port2) = (port(8981), port(8982));
is(many(10), "$port1: 5, $port2: 5", 'balanced');
my @sockets;
for (1 .. 2) {
my $s = dgram('127.0.0.1:' . port(8980));
$s->write('w');
push @sockets, $s;
}
select undef, undef, undef, 0.2;
is(many(10), "$port2: 10", 'least_conn');
###############################################################################
sub many {
my ($count) = @_;
my (%ports);
for (1 .. $count) {
if (dgram('127.0.0.1:' . port(8980))->io('.') =~ /(\d+)/) {
$ports{$1} = 0 unless defined $ports{$1};
$ports{$1}++;
}
}
my @keys = map { my $p = $_; grep { $p == $_ } keys %ports } @ports;
return join ', ', map { $_ . ": " . $ports{$_} } @keys;
}
###############################################################################
sub udp_daemon {
my ($port, $t) = @_;
my $server = IO::Socket::INET->new(
Proto => 'udp',
LocalAddr => '127.0.0.1:' . $port,
Reuse => 1,
)
or die "Can't create listening socket: $!\n";
# signal we are ready
open my $fh, '>', $t->testdir() . '/' . $port;
close $fh;
while (1) {
$server->recv(my $buffer, 65536);
my $port = $server->sockport();
if ($buffer =~ /w/ && $port == port(8981)) {
select undef, undef, undef, 2.5;
}
$buffer = $port;
$server->send($buffer);
}
}
###############################################################################