view stream_tcp_nodelay.t @ 1427:eb1d883305ea

Tests: avoid edge cases in upstream random two test. Unavailable servers contribute to the number of attempts, if selected, before the balancer would fall back to the default round-robin method. This means that it's quite possible to get server with more connections. To facilitate with selecting two alive servers, down server was removed from the upstream configuration at the cost of slightly worse coverage.
author Sergey Kandaurov <pluknet@nginx.com>
date Thu, 10 Jan 2019 17:42:34 +0300
parents 196d33c2bb45
children f3ba4c74de31
line wrap: on
line source

#!/usr/bin/perl

# (C) Andrey Zelenkov
# (C) Sergey Kandaurov
# (C) Nginx, Inc.

# Stream tests for tcp_nodelay.

###############################################################################

use warnings;
use strict;

use Test::More;

use IO::Select;

BEGIN { use FindBin; chdir($FindBin::Bin); }

use lib 'lib';
use Test::Nginx;
use Test::Nginx::Stream qw/ stream /;

###############################################################################

select STDERR; $| = 1;
select STDOUT; $| = 1;

my $t = Test::Nginx->new()->has(qw/stream/);

$t->plan(2)->write_file_expand('nginx.conf', <<'EOF');

%%TEST_GLOBALS%%

daemon off;

events {
}

stream {
    proxy_buffer_size 1;
    tcp_nodelay off;

    server {
        listen      127.0.0.1:8081;
        proxy_pass  127.0.0.1:8080;
    }

    server {
        tcp_nodelay on;
        listen      127.0.0.1:8082;
        proxy_pass  127.0.0.1:8080;
    }
}

EOF

$t->run_daemon(\&stream_daemon);
$t->run()->waitforsocket('127.0.0.1:' . port(8080));

###############################################################################

my $str = '1234567890' x 10 . 'F';
my $length = length($str);

is(stream('127.0.0.1:' . port(8081))->io($str, length => $length), $str,
	'tcp_nodelay off');
is(stream('127.0.0.1:' . port(8082))->io($str, length => $length), $str,
	'tcp_nodelay on');

###############################################################################

sub stream_daemon {
	my $server = IO::Socket::INET->new(
		Proto => 'tcp',
		LocalAddr => '127.0.0.1:' . port(8080),
		Listen => 5,
		Reuse => 1
	)
		or die "Can't create listening socket: $!\n";

	my $sel = IO::Select->new($server);

	local $SIG{PIPE} = 'IGNORE';

	while (my @ready = $sel->can_read) {
		foreach my $fh (@ready) {
			if ($server == $fh) {
				my $new = $fh->accept;
				$new->autoflush(1);
				$sel->add($new);

			} elsif (stream_handle_client($fh)) {
				$sel->remove($fh);
				$fh->close;
			}
		}
	}
}

sub stream_handle_client {
	my ($client) = @_;

	log2c("(new connection $client)");

	$client->sysread(my $buffer, 65536) or return 1;

	log2i("$client $buffer");

	my $close = $buffer =~ /F/;

	log2o("$client $buffer");

	$client->syswrite($buffer);

	return $close;
}

sub log2i { Test::Nginx::log_core('|| <<', @_); }
sub log2o { Test::Nginx::log_core('|| >>', @_); }
sub log2c { Test::Nginx::log_core('||', @_); }

###############################################################################