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Tests: improved stop_daemons() to send signal again. As was observed, it's possible that a signal to complete a uwsgi daemon can be ignored while it is starting up, which results in tests hang due to eternal waiting on child processes termination. Notably, it is seen when running tests with a high number of prove jobs on a low-profile VM against nginx with broken modules and/or configuration. To reproduce: $ TEST_NGINX_GLOBALS=ERROR prove -j16 uwsgi*.t Inspecting uwsgi under ktrace on FreeBSD confirms that a SIGTERM signal is ignored at the very beginning of uwsgi startup. It is then replaced with a default action after listen(), thus waiting until uwsgi is ready to accept new TCP connections doesn't completely solve the hang window. The fix is to retry sending a signal some time after waitpid(WNOHANG) continuously demonstrated no progress with reaping a signaled process. It is modelled after f13ead27f89c that improved stop() for nginx.
author Sergey Kandaurov <pluknet@nginx.com>
date Wed, 29 Dec 2021 22:29:23 +0300
parents 766bcbb632ee
children
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#!/usr/bin/perl

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

# Tests for nginx geo 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 geo/);

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

%%TEST_GLOBALS%%

daemon off;

events {
}

http {
    %%TEST_GLOBALS_HTTP%%

    geo $geo {
        127.0.0.0/8   loopback;
        192.0.2.0/24  test;
        0.0.0.0/0     world;
    }

    geo $geo_include {
        include       geo.conf;
        192.0.2.0/24  test;
        0.0.0.0/0     world;
    }

    geo $geo_delete {
        127.0.0.0/8   loopback;
        192.0.2.0/24  test;
        0.0.0.0/0     world;
        delete        127.0.0.0/8;
    }

    geo $arg_ip $geo_from_arg {
        default       default;
        127.0.0.0/8   loopback;
        192.0.2.0/24  test;
    }

    geo $arg_ip $geo_arg_ranges {
        ranges;
        default                default;
        127.0.0.0-127.0.0.1    loopback;

        # ranges with two /16 networks
        # the latter network has greater two least octets
        # (see 1301a58b5dac for details)
        10.10.3.0-10.11.2.255  foo;
        10.12.3.0-10.13.2.255  foo2;
        delete                 10.10.3.0-10.11.2.255;
    }

    geo $geo_proxy {
        default       default;
        proxy         127.0.0.1;
        127.0.0.0/8   loopback;
        192.0.2.0/24  test;
    }

    geo $geo_proxy_recursive {
        proxy_recursive;
        default       default;
        proxy         127.0.0.1;
        127.0.0.0/8   loopback;
        192.0.2.0/24  test;
    }

    geo $geo_ranges {
        ranges;
        default                    default;
        127.0.0.0-127.255.255.255  loopback;
        192.0.2.0-192.0.2.255      test;
    }

    geo $geo_ranges_include {
        ranges;
        default                default;
        include                geo-ranges.conf;
        192.0.2.0-192.0.2.255  test;
    }

    geo $geo_ranges_delete {
        ranges;
        default                default;
        127.0.0.0-127.0.0.255  test;
        127.0.0.1-127.0.0.1    loopback;
        delete                 127.0.0.0-127.0.0.0;
        delete                 127.0.0.2-127.0.0.255;
        delete                 127.0.0.1-127.0.0.1;
    }

    # delete range with two /16
    geo $geo_ranges_delete_2 {
        ranges;
        default              default;
        127.0.0.0-127.1.0.0  loopback;
        delete               127.0.0.0-127.1.0.0;
    }

    geo $geo_before {
        ranges;
        default                default;
        127.0.0.1-127.0.0.255  loopback;
        127.0.0.0-127.0.0.0    test;
    }

    geo $geo_after {
        ranges;
        default                default;
        127.0.0.0-127.0.0.1    loopback;
        127.0.0.2-127.0.0.255  test;
    }

    geo $geo_insert {
        ranges;
        default                default;
        127.0.0.0-127.0.0.255  test;
        127.0.0.1-127.0.0.2    test2;
        127.0.0.1-127.0.0.1    loopback;
    }

    geo $geo_insert_before {
        ranges;
        default                default;
        127.0.0.0-127.0.0.255  test;
        127.0.0.0-127.0.0.1    loopback;
    }

    geo $geo_insert_after {
        ranges;
        default                default;
        127.0.0.0-127.0.0.255  test;
        127.0.0.1-127.0.0.255  loopback;
     }

    server {
        listen       127.0.0.1:8080;
        server_name  localhost;

        location / {
            add_header X-IP   $remote_addr;
            add_header X-Geo  $geo;
            add_header X-Inc  $geo_include;
            add_header X-Del  $geo_delete;
            add_header X-Ran  $geo_ranges;
            add_header X-RIn  $geo_ranges_include;
            add_header X-ABe  $geo_before;
            add_header X-AAf  $geo_after;
            add_header X-Ins  $geo_insert;
            add_header X-IBe  $geo_insert_before;
            add_header X-IAf  $geo_insert_after;
            add_header X-Arg  $geo_from_arg;
            add_header X-ARa  $geo_arg_ranges;
            add_header X-XFF  $geo_proxy;
            add_header X-XFR  $geo_proxy_recursive;
        }

        location /2 {
            add_header X-RDe  $geo_ranges_delete;
            add_header X-RD2  $geo_ranges_delete_2;
        }
    }
}

EOF

$t->write_file('1', '');
$t->write_file('2', '');
$t->write_file('geo.conf', '127.0.0.0/8  loopback;');
$t->write_file('geo-ranges.conf', '127.0.0.0-127.255.255.255  loopback;');

$t->run();

plan(skip_all => 'no 127.0.0.1 on host')
	if http_get('/1') !~ /X-IP: 127.0.0.1/m;

$t->plan(22);

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

my $r = http_get('/1');
like($r, qr/^X-Geo: loopback/m, 'geo');
like($r, qr/^X-Inc: loopback/m, 'geo include');
like($r, qr/^X-Del: world/m, 'geo delete');
like($r, qr/^X-Ran: loopback/m, 'geo ranges');
like($r, qr/^X-RIn: loopback/m, 'geo ranges include');

like(http_get('/2'), qr/^X-RDe: default/m, 'geo ranges delete');
like(http_get('/2'), qr/^X-RD2: default/m, 'geo ranges delete 2');

like($r, qr/^X-ABe: loopback/m, 'geo ranges add before');
like($r, qr/^X-AAf: loopback/m, 'geo ranges add after');
like($r, qr/^X-Ins: loopback/m, 'geo ranges insert');
like($r, qr/^X-IBe: loopback/m, 'geo ranges insert before');
like($r, qr/^X-IAf: loopback/m, 'geo ranges insert after');

like(http_get('/1?ip=192.0.2.1'), qr/^X-Arg: test/m, 'geo from variable');
like(http_get('/1?ip=10.0.0.1'), qr/^X-Arg: default/m, 'geo default');
like(http_get('/1?ip=10.0.0.1'), qr/^X-ARa: default/m, 'geo ranges default');
like(http_get('/1?ip=10.13.2.1'), qr/^X-ARa: foo2/m, 'geo ranges add');
like(http_get('/1?ip=10.11.2.1'), qr/^X-ARa: default/m,
	'geo delete range from variable');

like(http_xff('192.0.2.1'), qr/^X-XFF: test/m, 'geo proxy');
like(http_xff('10.0.0.1'), qr/^X-XFF: default/m, 'geo proxy default');
like(http_xff('10.0.0.1, 192.0.2.1'), qr/^X-XFF: test/m, 'geo proxy long');

like(http_xff('192.0.2.1, 127.0.0.1'), qr/^X-XFF: loopback/m,
	'geo proxy_recursive off');
like(http_xff('192.0.2.1, 127.0.0.1'), qr/^X-XFR: test/m,
	'geo proxy_recursive on');

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

sub http_xff {
	my ($xff) = @_;
	return http(<<EOF);
GET /1 HTTP/1.0
Host: localhost
X-Forwarded-For: $xff

EOF
}

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