Mercurial > hg > nginx-tests
view grpc_request_buffering.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 | 01d806268a12 |
children | 236d038dc04a |
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#!/usr/bin/perl # (C) Sergey Kandaurov # (C) Nginx, Inc. # Tests for grpc module, request body buffered. ############################################################################### use warnings; use strict; use Test::More; BEGIN { use FindBin; chdir($FindBin::Bin); } use lib 'lib'; use Test::Nginx; use Test::Nginx::HTTP2; ############################################################################### select STDERR; $| = 1; select STDOUT; $| = 1; my $t = Test::Nginx->new()->has(qw/http http_v2 grpc mirror proxy/)->plan(12); $t->write_file_expand('nginx.conf', <<'EOF'); %%TEST_GLOBALS%% daemon off; events { } http { %%TEST_GLOBALS_HTTP%% server { listen 127.0.0.1:8080 http2; listen 127.0.0.1:8082; server_name localhost; location /mirror { } location / { grpc_pass 127.0.0.1:8081; add_header X-Body $request_body; mirror /mirror; } location /proxy { proxy_pass http://127.0.0.1:8082/mirror; proxy_intercept_errors on; error_page 404 = @fallback; } location @fallback { grpc_pass 127.0.0.1:8081; } } } EOF $t->run(); ############################################################################### my $p = port(8081); my $f = grpc(); my $frames = $f->{http_start}('/SayHello'); my ($frame) = grep { $_->{type} eq "HEADERS" } @$frames; is($frame->{flags}, 4, 'request - HEADERS flags'); is($frame->{headers}{':method'}, 'POST', 'request - method'); is($frame->{headers}{':scheme'}, 'http', 'request - scheme'); is($frame->{headers}{':path'}, '/SayHello', 'request - path'); is($frame->{headers}{':authority'}, "127.0.0.1:$p", 'request - authority'); ($frame) = grep { $_->{type} eq "DATA" } @$frames; is($frame->{data}, 'Hello', 'request - DATA'); is($frame->{length}, 5, 'request - DATA length'); is($frame->{flags}, 1, 'request - DATA flags'); $frames = $f->{http_end}(); ($frame) = grep { $_->{type} eq "HEADERS" } @$frames; is($frame->{headers}{'x-body'}, 'Hello', 'request body in memory'); # tcp_nopush usage on peer connections # reopen window for request body after initial window was exhausted $frames = $f->{http_start}('/proxy'); is(eval(join '+', map { $_->{length} } grep { $_->{type} eq "DATA" } @$frames), 65535, 'preserve_output - first body bytes'); # expect body cleanup is disabled with preserve_output (ticket #1565). # after request body first bytes were proxied on behalf of initial window size, # send response header from upstream, this leads to body cleanup code path $frames = $f->{http_end}(); is(eval(join '+', map { $_->{length} } grep { $_->{type} eq "DATA" } @$frames), 465, 'preserve_output - last body bytes'); like(`grep -F '[crit]' ${\($t->testdir())}/error.log`, qr/^$/s, 'no crits'); ############################################################################### sub grpc { my ($server, $client, $f, $s, $c, $sid, $uri); $server = IO::Socket::INET->new( Proto => 'tcp', LocalHost => '127.0.0.1', LocalPort => $p, Listen => 5, Reuse => 1 ) or die "Can't create listening socket: $!\n"; $f->{http_start} = sub { ($uri, my %extra) = @_; $s = Test::Nginx::HTTP2->new() if !defined $s; my ($body) = $uri eq '/proxy' ? 'Hello' x 13200 : 'Hello'; $s->new_stream({ body => $body, headers => [ { name => ':method', value => 'POST', mode => 0 }, { name => ':scheme', value => 'http', mode => 0 }, { name => ':path', value => $uri }, { name => ':authority', value => 'localhost' }, { name => 'content-length', value => length($body) }]}); if (!$extra{reuse}) { eval { local $SIG{ALRM} = sub { die "timeout\n" }; alarm(5); $client = $server->accept() or return; alarm(0); }; alarm(0); if ($@) { log_in("died: $@"); return undef; } log2c("(new connection $client)"); $client->sysread(my $buf, 24) == 24 or return; # preface $c = Test::Nginx::HTTP2->new(1, socket => $client, pure => 1, preface => "") or return; } my $frames = $uri eq '/proxy' ? $c->read(all => [{ length => 65535 }]) : $c->read(all => [{ fin => 1 }]); if (!$extra{reuse}) { $c->h2_settings(0); $c->h2_settings(1); } my ($frame) = grep { $_->{type} eq "HEADERS" } @$frames; $sid = $frame->{sid}; return $frames; }; $f->{http_end} = sub { $c->new_stream({ body_more => 1, headers => [ { name => ':status', value => '200', mode => 0 }, { name => 'content-type', value => 'application/grpc' }, ]}, $sid); # reopen window for request body after response HEADERS is sent if ($uri eq '/proxy') { $c->h2_window(2**16, $sid); $c->h2_window(2**16); return $c->read(all => [{ sid => $sid, fin => 1 }]); } $c->h2_body('Hello world', { body_more => 1 }); $c->new_stream({ headers => [ { name => 'grpc-status', value => '0', mode => 2 }, { name => 'grpc-message', value => '', mode => 2 }, ]}, $sid); return $s->read(all => [{ fin => 1 }]); }; return $f; } sub log2c { Test::Nginx::log_core('||', @_); } ###############################################################################