| #!/usr/bin/perl |
| |
| # (C) Andrey Zelenkov |
| # (C) Nginx, Inc. |
| |
| # Tests for stream proxy module, limit rate directives. |
| |
| ############################################################################### |
| |
| use warnings; |
| use strict; |
| |
| use Test::More; |
| |
| use IO::Select; |
| |
| BEGIN { use FindBin; chdir($FindBin::Bin); } |
| |
| use lib 'lib'; |
| use Test::Nginx; |
| use Test::Nginx::Stream qw/ stream /; |
| |
| ############################################################################### |
| |
| select STDERR; $| = 1; |
| select STDOUT; $| = 1; |
| |
| my $t = Test::Nginx->new()->has(qw/stream/)->plan(9) |
| ->write_file_expand('nginx.conf', <<'EOF'); |
| |
| %%TEST_GLOBALS%% |
| |
| daemon off; |
| |
| events { |
| } |
| |
| stream { |
| # download and upload rates are set equal to the maximum |
| # number of bytes transmitted |
| |
| # proxy_download_rate value comes from following calculations: |
| # test string length (1000) + whitespace (1) + time string length (10) |
| |
| proxy_download_rate 1011; |
| proxy_upload_rate 1000; |
| |
| server { |
| listen 127.0.0.1:8081; |
| proxy_pass 127.0.0.1:8080; |
| } |
| |
| server { |
| listen 127.0.0.1:8082; |
| proxy_pass 127.0.0.1:8080; |
| proxy_download_rate 0; |
| proxy_upload_rate 0; |
| } |
| |
| server { |
| listen 127.0.0.1:8083; |
| proxy_pass 127.0.0.1:8080; |
| proxy_download_rate 1; |
| } |
| |
| server { |
| listen 127.0.0.1:8084; |
| proxy_pass 127.0.0.1:8080; |
| proxy_upload_rate 1; |
| } |
| |
| server { |
| listen 127.0.0.1:8085; |
| proxy_pass 127.0.0.1:8080; |
| proxy_download_rate 250; |
| } |
| |
| server { |
| listen 127.0.0.1:8086; |
| proxy_pass 127.0.0.1:8087; |
| proxy_upload_rate 250; |
| } |
| } |
| |
| EOF |
| |
| $t->run_daemon(\&stream_daemon, port(8080)); |
| $t->run_daemon(\&stream_daemon, port(8087)); |
| $t->run(); |
| |
| $t->waitforsocket('127.0.0.1:' . port(8080)); |
| $t->waitforsocket('127.0.0.1:' . port(8087)); |
| |
| ############################################################################### |
| |
| my $str = '1234567890' x 100; |
| |
| my %r = response($str, peer => '127.0.0.1:' . port(8081)); |
| is($r{'data'}, $str, 'exact limit'); |
| |
| %r = response($str . 'extra', peer => '127.0.0.1:' . port(8082)); |
| is($r{'data'}, $str . 'extra', 'unlimited'); |
| |
| SKIP: { |
| skip 'unsafe on VM', 3 unless $ENV{TEST_NGINX_UNSAFE}; |
| |
| # if interaction between backend and client is slow then proxy can add extra |
| # bytes to upload/download data |
| |
| %r = response($str . 'extra', peer => '127.0.0.1:' . port(8081)); |
| is($r{'data'}, $str, 'limited'); |
| |
| %r = response($str, peer => '127.0.0.1:' . port(8083), readonce => 1); |
| is($r{'data'}, '1', 'download - one byte'); |
| |
| %r = response($str, peer => '127.0.0.1:' . port(8084)); |
| is($r{'data'}, '1', 'upload - one byte'); |
| |
| } |
| |
| # Five chunks are split with four 1s delays: |
| # the first four chunks are quarters of test string |
| # and the fifth one is some extra data from backend. |
| |
| %r = response($str, peer => '127.0.0.1:' . port(8085)); |
| my $diff = time() - $r{'time'}; |
| cmp_ok($diff, '>=', 4, 'download - time'); |
| is($r{'data'}, $str, 'download - data'); |
| |
| my $time = time(); |
| %r = response($str . 'close', peer => '127.0.0.1:' . port(8086)); |
| $diff = time() - $time; |
| cmp_ok($diff, '>=', 4, 'upload - time'); |
| is($r{'data'}, $str . 'close', 'upload - data'); |
| |
| ############################################################################### |
| |
| sub response { |
| my ($data, %extra) = @_; |
| |
| my $s = stream($extra{peer}); |
| $s->write($data); |
| |
| $data = ''; |
| while (1) { |
| my $buf = $s->read(); |
| last unless length($buf); |
| |
| $data .= $buf; |
| |
| last if $extra{'readonce'}; |
| } |
| $data =~ /([\S]*)\s?(\d+)?/; |
| |
| return ('data' => $1, 'time' => $2) |
| } |
| |
| ############################################################################### |
| |
| sub stream_daemon { |
| my $port = shift; |
| |
| my $server = IO::Socket::INET->new( |
| Proto => 'tcp', |
| LocalAddr => '127.0.0.1', |
| LocalPort => $port, |
| Listen => 5, |
| Reuse => 1 |
| ) |
| or die "Can't create listening socket: $!\n"; |
| |
| my $sel = IO::Select->new($server); |
| |
| local $SIG{PIPE} = 'IGNORE'; |
| |
| while (my @ready = $sel->can_read) { |
| foreach my $fh (@ready) { |
| if ($server == $fh) { |
| my $new = $fh->accept; |
| $new->autoflush(1); |
| $sel->add($new); |
| |
| } elsif (stream_handle_client($fh)) { |
| $sel->remove($fh); |
| $fh->close; |
| } |
| } |
| } |
| } |
| |
| sub stream_handle_client { |
| my ($client) = @_; |
| |
| log2c("(new connection $client)"); |
| |
| $client->sysread(my $buffer, 65536) or return 1; |
| |
| log2i("$client $buffer"); |
| |
| $buffer .= " " . time() if $client->sockport() eq port(8080); |
| |
| log2o("$client $buffer"); |
| |
| $client->syswrite($buffer); |
| |
| return $client->sockport() eq port(8080) ? 1 : $buffer =~ /close/; |
| } |
| |
| sub log2i { Test::Nginx::log_core('|| <<', @_); } |
| sub log2o { Test::Nginx::log_core('|| >>', @_); } |
| sub log2c { Test::Nginx::log_core('||', @_); } |
| |
| ############################################################################### |