Mercurial > hg > nginx-tests
view fastcgi_body.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 | 196d33c2bb45 |
children |
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#!/usr/bin/perl # (C) Maxim Dounin # Test for fastcgi backend with chunked request body. ############################################################################### 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 fastcgi/)->plan(5) ->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; location / { fastcgi_pass 127.0.0.1:8081; fastcgi_param REQUEST_URI $request_uri; fastcgi_param CONTENT_LENGTH $content_length; } } } EOF $t->run_daemon(\&fastcgi_daemon); $t->run()->waitforsocket('127.0.0.1:' . port(8081)); ############################################################################### like(http_get('/'), qr/X-Body: _eos\x0d?$/ms, 'fastcgi no body'); like(http_get_length('/', ''), qr/X-Body: _eos\x0d?$/ms, 'fastcgi empty body'); like(http_get_length('/', 'foobar'), qr/X-Body: foobar_eos\x0d?$/ms, 'fastcgi body'); like(http(<<EOF), qr/X-Body: foobar_eos\x0d?$/ms, 'fastcgi chunked'); GET / HTTP/1.1 Host: localhost Connection: close Transfer-Encoding: chunked 6 foobar 0 EOF like(http(<<EOF), qr/X-Body: _eos\x0d?$/ms, 'fastcgi empty chunked'); GET / HTTP/1.1 Host: localhost Connection: close Transfer-Encoding: chunked 0 EOF ############################################################################### sub http_get_length { my ($url, $body) = @_; my $length = length $body; return http(<<EOF); GET $url HTTP/1.1 Host: localhost Connection: close Content-Length: $length $body EOF } ############################################################################### # Simple FastCGI responder implementation. # http://www.fastcgi.com/devkit/doc/fcgi-spec.html sub fastcgi_read_record($) { my ($buf) = @_; my $h; return undef unless length $$buf; @{$h}{qw/ version type id clen plen /} = unpack("CCnnC", $$buf); $h->{content} = substr $$buf, 8, $h->{clen}; $h->{padding} = substr $$buf, 8 + $h->{clen}, $h->{plen}; $$buf = substr $$buf, 8 + $h->{clen} + $h->{plen}; return $h; } sub fastcgi_respond($$$$) { my ($socket, $version, $id, $body) = @_; # stdout $socket->write(pack("CCnnCx", $version, 6, $id, length($body), 0)); $socket->write($body); # close stdout $socket->write(pack("CCnnCx", $version, 6, $id, 0, 0)); # end request $socket->write(pack("CCnnCx", $version, 3, $id, 8, 0)); $socket->write(pack("NCxxx", 0, 0)); } sub fastcgi_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); Test::Nginx::log_core('||', "fastcgi connection"); $client->sysread(my $buf, 1024) or next; my ($version, $id); my $body = ''; while (my $h = fastcgi_read_record(\$buf)) { $version = $h->{version}; $id = $h->{id}; Test::Nginx::log_core('||', "fastcgi record: " . " $h->{version}, $h->{type}, $h->{id}, " . "'$h->{content}'"); if ($h->{type} == 5) { $body .= $h->{content} if $h->{clen} > 0; # count stdin end-of-stream $body .= '_eos' if $h->{clen} == 0; } } # respond fastcgi_respond($client, $version, $id, <<EOF); Location: http://localhost/redirect Content-Type: text/html X-Body: $body SEE-THIS EOF } } ###############################################################################