Tests: stream limit rate tests, variables support.
diff --git a/stream_limit_rate2.t b/stream_limit_rate2.t
new file mode 100644
index 0000000..cfc4455
--- /dev/null
+++ b/stream_limit_rate2.t
@@ -0,0 +1,227 @@
+#!/usr/bin/perl
+
+# (C) Andrey Zelenkov
+# (C) Nginx, Inc.
+
+# Tests for stream proxy module, limit rate directives, variables support.
+
+###############################################################################
+
+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 stream_map/)
+ ->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)
+
+ map $server_port $down {
+ default 1011;
+ %%PORT_8082%% 0;
+ %%PORT_8083%% 1;
+ %%PORT_8085%% 250;
+ }
+
+ map $server_port $up {
+ default 1000;
+ %%PORT_8082%% 0;
+ %%PORT_8084%% 1;
+ %%PORT_8086%% 250;
+ }
+
+ proxy_download_rate $down;
+ proxy_upload_rate $up;
+
+ 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 $down;
+ proxy_upload_rate $up;
+ }
+
+ server {
+ listen 127.0.0.1:8083;
+ proxy_pass 127.0.0.1:8080;
+ proxy_download_rate $down;
+ }
+
+ server {
+ listen 127.0.0.1:8084;
+ proxy_pass 127.0.0.1:8080;
+ proxy_upload_rate $up;
+ }
+
+ server {
+ listen 127.0.0.1:8085;
+ proxy_pass 127.0.0.1:8080;
+ proxy_download_rate $down;
+ }
+
+ server {
+ listen 127.0.0.1:8086;
+ proxy_pass 127.0.0.1:8087;
+ proxy_upload_rate $up;
+ }
+}
+
+EOF
+
+$t->run_daemon(\&stream_daemon, port(8080));
+$t->run_daemon(\&stream_daemon, port(8087));
+$t->try_run('no proxy_download_rate variables')->plan(9);
+
+$t->waitforsocket('127.0.0.1:' . port(8080));
+$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('||', @_); }
+
+###############################################################################