Mercurial > hg > nginx-tests
view proxy_chunked_extra.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) Maxim Dounin # (C) Nginx, Inc. # Test for http backend returning response with Transfer-Encoding: chunked, # followed by some extra data. ############################################################################### 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/)->plan(1); $t->write_file_expand('nginx.conf', <<'EOF'); %%TEST_GLOBALS%% daemon off; events { } http { %%TEST_GLOBALS_HTTP%% server { listen 127.0.0.1:8080; server_name localhost; proxy_buffer_size 128; proxy_buffers 4 128; location / { proxy_pass http://127.0.0.1:8081; proxy_read_timeout 1s; } } } EOF $t->run_daemon(\&http_chunked_daemon); $t->run()->waitforsocket('127.0.0.1:' . port(8081)); ############################################################################### like(http_get('/'), qr/200 OK(?!.*zzz)/s, 'chunked with extra data'); ############################################################################### sub http_chunked_daemon { my $server = IO::Socket::INET->new( Proto => 'tcp', LocalAddr => '127.0.0.1:' . port(8081), Listen => 5, Reuse => 1 ) or die "Can't create listening socket: $!\n"; local $SIG{PIPE} = 'IGNORE'; while (my $client = $server->accept()) { $client->autoflush(1); while (<$client>) { last if (/^\x0d?\x0a?$/); } # return a large response start to allocate # multiple buffers; stop at the buffer end print $client "" . "HTTP/1.1 200 OK" . CRLF . "Connection: close" . CRLF . "Transfer-Encoding: chunked" . CRLF . CRLF . "80" . CRLF . ("x" x 126) . CRLF . CRLF . "80" . CRLF . ("x" x 126) . CRLF . CRLF . "80" . CRLF . ("x" x 126) . CRLF . CRLF . "80" . CRLF . ("x" x 126) . CRLF . CRLF . "20" . CRLF . ("x" x 30) . CRLF . CRLF; select(undef, undef, undef, 0.3); # fill three full buffers here, so they are # processed in order, regardless of the # p->upstream_done flag set print $client "" . "75" . CRLF . ("y" x 115) . CRLF . CRLF . "0" . CRLF . CRLF . "75" . CRLF . ("z" x 115) . CRLF . CRLF . "0" . CRLF . CRLF . "75" . CRLF . ("z" x 115) . CRLF . CRLF . "0" . CRLF . CRLF; close $client; } } ###############################################################################