view stream_proxy_protocol.t @ 1825:3629eda94c1b

Tests: handling of EWOULDBLOCK from sysread() with IO::Socket::SSL. With IO::Socket::SSL, when select() reports that the socket is readable, reading from it might still fail with EWOULDBLOCK, since no application data is available in the socket. In particular, this might happen with TLSv1.3 when a session ticket is received after the handshake. Fix is to explicitly check for EWOULDBLOCK errors.
author Maxim Dounin <mdounin@mdounin.ru>
date Tue, 21 Mar 2023 02:57:39 +0300
parents f3ba4c74de31
children
line wrap: on
line source

#!/usr/bin/perl

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

# Tests for stream proxy module with haproxy protocol.

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

use warnings;
use strict;

use Test::More;

use IO::Select;
use Socket qw/ $CRLF /;

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/)->plan(2)
	->write_file_expand('nginx.conf', <<'EOF');

%%TEST_GLOBALS%%

daemon off;

events {
}

stream {
    %%TEST_GLOBALS_STREAM%%

    proxy_protocol on;

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

    server {
        listen          127.0.0.1:8082;
        proxy_pass      127.0.0.1:8081;
        proxy_protocol  off;
    }
}

EOF

$t->run_daemon(\&stream_daemon);
$t->run();
$t->waitforsocket('127.0.0.1:' . port(8081));

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

my $dp = port(8080);
my $s = stream('127.0.0.1:' . $dp);
my $data = $s->io('close');
my $sp = $s->sockport();
is($data, "PROXY TCP4 127.0.0.1 127.0.0.1 $sp $dp${CRLF}close", 'protocol on');

is(stream('127.0.0.1:' . port(8082))->io('close'), 'close', 'protocol off');

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

sub stream_daemon {
	my $server = IO::Socket::INET->new(
		Proto => 'tcp',
		LocalAddr => '127.0.0.1:' . port(8081),
		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");

	log2o("$client $buffer");

	$client->syswrite($buffer);

	return $buffer =~ /close/;
}

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

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