Mercurial > hg > nginx-tests
view http_keepalive.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 | 5ac6efbe5552 |
children |
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#!/usr/bin/perl # (C) Andrey Zelenkov # (C) Nginx, Inc. # Tests for http keepalive directives. ############################################################################### use warnings; use strict; use Test::More; use IO::Select; 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/) ->write_file_expand('nginx.conf', <<'EOF'); %%TEST_GLOBALS%% daemon off; events { } http { %%TEST_GLOBALS_HTTP%% log_format test1 $sent_http_connection; log_format test2 $sent_http_keep_alive; access_log %%TESTDIR%%/test1.log test1 if=$arg_l; access_log %%TESTDIR%%/test2.log test2 if=$arg_l; server { listen 127.0.0.1:8080; server_name localhost; keepalive_requests 2; keepalive_timeout 1 9; add_header X-Conn $connection_requests:$connection_time; location / { } location /r { keepalive_requests 4; keepalive_timeout 30s; } location /time { keepalive_requests 100; keepalive_timeout 75s; keepalive_time 1s; } location /safari { keepalive_disable safari; } location /none { keepalive_disable none; } location /zero { keepalive_timeout 0; } } } EOF $t->write_file('index.html', ''); $t->write_file('r', ''); $t->write_file('time', ''); $t->write_file('safari', ''); $t->write_file('none', ''); $t->write_file('zero', ''); $t->run()->plan(21); ############################################################################### # keepalive_requests like(http_keepalive('/'), qr/Connection: keep-alive/, 'keepalive request'); is(count_keepalive(http_keepalive('/?l=ok', req => 2)), 1, 'keepalive limit'); is(count_keepalive(http_keepalive('/r', req => 3)), 3, 'keepalive merge'); is(count_keepalive(http_keepalive('/r', req => 5)), 3, 'keepalive merge limit'); # keepalive_disable like(http_keepalive('/', method => 'POST', ua => "MSIE 5.0"), qr/Connection: close/, 'keepalive disable msie6'); like(http_keepalive('/', ua => "MSIE 5.0"), qr/Connection: keep-alive/, 'keepalive disable msie6 GET'); like(http_keepalive('/', method => 'POST', ua => "MSIE 7.0"), qr/Connection: keep-alive/, 'keepalive disable msie6 modern'); like(http_keepalive('/', ua => "Mac OS X Safari/7534.48.3"), qr/Connection: keep-alive/, 'keepalive disable msie6 safari'); like(http_keepalive('/safari', ua => "Mac OS X Safari/7534.48.3"), qr/Connection: close/, 'keepalive disable safari'); like(http_keepalive('/none', method => 'POST', ua => "MSIE 5.0"), qr/Connection: keep-alive/, 'keepalive disable none'); # keepalive_timeout my $r = http_keepalive('/', req => 2, sleep => 2.1); is(count_keepalive($r), 1, 'keepalive timeout request'); like($r, qr/Keep-Alive: timeout=9/, 'keepalive timeout header'); like(http_keepalive('/zero'), qr/Connection: close/, 'keepalive timeout 0'); # keepalive_time $r = http_keepalive('/time', req => 3); is(() = $r =~ /(200 OK)/g, 3, 'keepalive time requests'); unlike($r, qr/Connection: close/, 'keepalive time connection'); $r = http_keepalive('/time', req => 3, sleep => 1.2); is(() = $r =~ /(200 OK)/g, 2, 'keepalive time limit requests'); like($r, qr/Connection: close/, 'keepalive time limit connection'); like($r, qr/X-Conn: 1:0.*X-Conn: 2:[^0]/s, 'keepalive time limit variables'); # cancel keepalive on EOF while discarding body my $s = http(<<EOF, start => 1); POST /r HTTP/1.1 Host: localhost Content-Length: 10 EOF read_keepalive($s); shutdown($s, 1); ok(IO::Select->new($s)->can_read(3), 'EOF in discard body'); $t->stop(); TODO: { local $TODO = 'not yet'; is($t->read_file('test1.log'), "keep-alive\nclose\n", 'sent_http_connection'); is($t->read_file('test2.log'), "timeout=9\n-\n", 'sent_http_keep_alive'); } ############################################################################### sub http_keepalive { my ($url, %opts) = @_; my $total = ''; $opts{ua} = $opts{ua} || ''; $opts{req} = $opts{req} || 1; $opts{sleep} = $opts{sleep} || 0; $opts{method} = $opts{method} || 'GET'; local $SIG{PIPE} = 'IGNORE'; my $s = http('', start => 1); for my $i (1 .. $opts{req}) { my $sleep = ($i == 1 ? $opts{sleep} : 0); http(<<EOF, socket => $s, start => 1, sleep => $sleep); $opts{method} $url HTTP/1.1 Host: localhost User-Agent: $opts{ua} EOF $total .= read_keepalive($s); } return $total; } sub read_keepalive { my ($s) = @_; my $data = ''; while (IO::Select->new($s)->can_read(3)) { sysread($s, my $buffer, 4096) or last; $data .= $buffer; last if $data =~ /^\x0d\x0a/ms; } log_in($data); return $data; } sub count_keepalive { my ($str) = @_; return $str =~ s/Connection: keep-alive//g; } ###############################################################################