view upstream_ip_hash.t @ 1240:f7eb2875ed45

Tests: avoid interleaved output in Upgrade handling tests. When the testing script is run in verbose mode by prove that redirects stdout, a garbled verbose mode line from backend can be produced that incorporates TAP output of an individual test result, which eventually breaks the testing plan. Notably, this happens when testing sending multiple frames if backend started to respond before all frames were received. This is possible due to the line boundary used as an indicator of last bytes to receive before starting to send. The fix is to amend the only last frame of many specially, for that purpose.
author Sergey Kandaurov <pluknet@nginx.com>
date Wed, 15 Nov 2017 20:16:09 +0300
parents 882267679006
children dab8b5252216
line wrap: on
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#!/usr/bin/perl

# (C) Maxim Dounin

# Tests for upstream ip_hash balancer.

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

use warnings;
use strict;

use Test::More;

use Socket qw/ CRLF /;

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 proxy upstream_ip_hash realip rewrite/)
	->write_file_expand('nginx.conf', <<'EOF')->run();

%%TEST_GLOBALS%%

daemon off;

events {
}

http {
    %%TEST_GLOBALS_HTTP%%

    upstream u {
        ip_hash;
        server 127.0.0.1:8081;
        server 127.0.0.1:8082;
    }

    upstream u2 {
        ip_hash;
        server 127.0.0.1:8081;
        server 127.0.0.1:8082;
        server 127.0.0.1:8083;
    }

    server {
        listen       127.0.0.1:8080;
        server_name  localhost;

        set_real_ip_from 127.0.0.0/8;
        add_header X-IP $remote_addr;

        location / {
            proxy_pass http://u;
        }
        location /u2 {
            proxy_pass http://u2;
        }
    }

    server {
        listen       127.0.0.1:8081;
        listen       127.0.0.1:8082;
        listen       127.0.0.1:8083;
        server_name  localhost;

        location / {
            add_header X-Port $server_port;
            return 204;
        }
    }
}

EOF

plan(skip_all => 'no 127.0.0.1 on host')
	if http_get('/') !~ /X-IP: 127.0.0.1/m;

$t->plan(2);

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

my @ports = my ($port1, $port2, $port3) = (port(8081), port(8082), port(8083));

is(many('/', 30), "$port1: 15, $port2: 15", 'ip_hash');
is(many('/u2', 30), "$port1: 10, $port2: 10, $port3: 10", 'ip_hash 3 peers');

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

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

	for my $i (1 .. $count) {
		my $req = "GET $uri HTTP/1.0" . CRLF
			. "X-Real-IP: 127.0.$i.2" . CRLF . CRLF;

		if (http($req) =~ /X-Port: (\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;
}

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