Mercurial > hg > nginx-tests
view mail_max_errors.t @ 1752:ba6e24e38f03
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 | 41b213d611f5 |
children | 2a0a6035a1af |
line wrap: on
line source
#!/usr/bin/perl # (C) Maxim Dounin # (C) Nginx, Inc. # Tests for mail max_errors. ############################################################################### use warnings; use strict; use Test::More; use Socket qw/ CRLF /; BEGIN { use FindBin; chdir($FindBin::Bin); } use lib 'lib'; use Test::Nginx; use Test::Nginx::IMAP; use Test::Nginx::POP3; use Test::Nginx::SMTP; ############################################################################### select STDERR; $| = 1; select STDOUT; $| = 1; local $SIG{PIPE} = 'IGNORE'; my $t = Test::Nginx->new()->has(qw/mail imap pop3 smtp/) ->write_file_expand('nginx.conf', <<'EOF'); %%TEST_GLOBALS%% daemon off; events { } mail { auth_http http://127.0.0.1:8080; # unused max_errors 2; server { listen 127.0.0.1:8143; protocol imap; } server { listen 127.0.0.1:8110; protocol pop3; } server { listen 127.0.0.1:8025; protocol smtp; } } EOF $t->try_run('no max_errors')->plan(18); ############################################################################### # imap my $s = Test::Nginx::IMAP->new(); $s->read(); $s->send('a01 FOO'); $s->check(qr/^a01 BAD/, 'imap first error'); $s->send('a02 BAR'); $s->check(qr/^a02 BAD/, 'imap second error'); $s->send('a03 BAZZ'); $s->check(qr/^$/, 'imap max errors'); $s = Test::Nginx::IMAP->new(); $s->read(); $s->send('a01 FOO' . CRLF . 'a02 BAR' . CRLF . 'a03 BAZZ'); $s->check(qr/^a01 BAD/, 'imap pipelined first error'); $s->check(qr/^a02 BAD/, 'imap pipelined second error'); $s->check(qr/^$/, 'imap pipelined max errors'); # pop3 $s = Test::Nginx::POP3->new(); $s->read(); $s->send('FOO'); $s->check(qr/^-ERR/, 'pop3 first error'); $s->send('BAR'); $s->check(qr/^-ERR/, 'pop3 second error'); $s->send('BAZZ'); $s->check(qr/^$/, 'pop3 max errors'); $s = Test::Nginx::POP3->new(); $s->read(); $s->send('FOO' . CRLF . 'BAR' . CRLF . 'BAZZ'); $s->check(qr/^-ERR/, 'pop3 pipelined first error'); $s->check(qr/^-ERR/, 'pop3 pipelined second error'); $s->check(qr/^$/, 'pop3 pipelined max errors'); # smtp $s = Test::Nginx::SMTP->new(); $s->read(); $s->send('FOO'); $s->check(qr/^5.. /, 'smtp first error'); $s->send('BAR'); $s->check(qr/^5.. /, 'smtp second error'); $s->send('BAZZ'); $s->check(qr/^$/, 'smtp max errors'); $s = Test::Nginx::SMTP->new(); $s->read(); $s->send('FOO' . CRLF . 'BAR' . CRLF . 'BAZZ'); $s->check(qr/^5.. /, 'smtp pipelined first error'); $s->check(qr/^5.. /, 'smtp pipelined second error'); $s->check(qr/^$/, 'smtp pipelined max errors'); ###############################################################################