view split_clients.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 882267679006
children
line wrap: on
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#!/usr/bin/perl

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

# Tests for split_client module.

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

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 split_clients/)->plan(1);

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

%%TEST_GLOBALS%%

daemon off;

events {
}

http {
    %%TEST_GLOBALS_HTTP%%

    split_clients $connection $variant {
        51.2%  ".one";
        10%    ".two";
        *      ".three";
    }

    server {
        listen       127.0.0.1:8080;
        server_name  localhost;

        location / {
            index index${variant}.html;
        }
    }
}

EOF

$t->write_file('index.one.html', 'first');
$t->write_file('index.two.html', 'second');
$t->write_file('index.three.html', 'third');

$t->run();

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

# NB: split_clients distribution is a subject to implementation details

like(many('/', 20), qr/first: 12, second: 2, third: 6/, 'split');

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

sub many {
	my ($uri, $count) = @_;
	my %dist;

	for (1 .. $count) {
		if (http_get($uri) =~ /(first|second|third)/) {
			$dist{$1} = 0 unless defined $dist{$1};
			$dist{$1}++;
		}
	}

	return join ', ', map { $_ . ": " . $dist{$_} } sort keys %dist;
}

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