new file mode 100644
--- /dev/null
+++ b/stream_udp_proxy_requests.t
@@ -0,0 +1,206 @@
+#!/usr/bin/perl
+
+# (C) Sergey Kandaurov
+# (C) Nginx, Inc.
+
+# Tests for stream proxy module, the proxy_requests directive.
+
+###############################################################################
+
+use warnings;
+use strict;
+
+use Test::More;
+
+BEGIN { use FindBin; chdir($FindBin::Bin); }
+
+use lib 'lib';
+use Test::Nginx;
+use Test::Nginx::Stream qw/ dgram /;
+
+###############################################################################
+
+select STDERR; $| = 1;
+select STDOUT; $| = 1;
+
+my $t = Test::Nginx->new()->has(qw/stream udp/)
+	->write_file_expand('nginx.conf', <<'EOF');
+
+%%TEST_GLOBALS%%
+
+daemon off;
+
+events {
+}
+
+stream {
+    proxy_timeout  2100ms;
+
+    log_format status $status;
+
+    server {
+        listen           127.0.0.1:%%PORT_8980_UDP%% udp;
+        proxy_pass       127.0.0.1:%%PORT_8990_UDP%%;
+
+        proxy_requests   0;
+    }
+
+    server {
+        listen           127.0.0.1:%%PORT_8981_UDP%% udp;
+        proxy_pass       127.0.0.1:%%PORT_8990_UDP%%;
+
+        proxy_requests   1;
+    }
+
+    server {
+        listen           127.0.0.1:%%PORT_8982_UDP%% udp;
+        proxy_pass       127.0.0.1:%%PORT_8990_UDP%%;
+
+        proxy_requests   2;
+    }
+
+    server {
+        listen           127.0.0.1:%%PORT_8983_UDP%% udp;
+        proxy_pass       127.0.0.1:%%PORT_8990_UDP%%;
+    }
+
+    server {
+        listen           127.0.0.1:%%PORT_8984_UDP%% udp;
+        proxy_pass       127.0.0.1:%%PORT_8991_UDP%%;
+
+        proxy_requests   2;
+        access_log       %%TESTDIR%%/s.log status;
+    }
+
+    server {
+        listen           127.0.0.1:%%PORT_8985_UDP%% udp;
+        proxy_pass       127.0.0.1:%%PORT_8990_UDP%%;
+
+        proxy_requests   2;
+        proxy_responses  2;
+        access_log       %%TESTDIR%%/s2.log status;
+    }
+}
+
+EOF
+
+
+$t->run_daemon(\&udp_daemon, $t, port(8990));
+$t->run_daemon(\&udp_daemon, $t, port(8991));
+$t->try_run('no proxy_requests')->plan(26);
+
+$t->waitforfile($t->testdir . '/' . port(8990));
+$t->waitforfile($t->testdir . '/' . port(8991));
+
+###############################################################################
+
+# proxy_requests 0, binding is not dropped across streams
+
+my $s = dgram('127.0.0.1:' . port(8980));
+my $n = $s->io('1', read => 1);
+ok($n, 'requests 0 create');
+is($s->read(), '1', 'requests 0 create - response');
+
+is($s->io('1', read => 1), $n, 'requests 0 second - binding saved');
+is($s->read(), '1', 'requests 0 second - response');
+
+is($s->io('1', read => 1), $n, 'requests 0 follow - binding saved');
+is($s->read(), '1', 'requests 0 follow - response');
+
+# proxy_requests 1, binding is dropped on every next stream
+
+$s = dgram('127.0.0.1:' . port(8981));
+$n = $s->io('1', read => 1);
+ok($n, 'requests 1 create');
+is($s->read(), '1', 'requests 1 create - response');
+
+isnt($s->io('1', read => 1), $n, 'requests 1 second - binding lost');
+is($s->read(), '1', 'requests 1 second - response');
+
+# proxy_requests 2, binding is dropped on every second stream
+
+$s = dgram('127.0.0.1:' . port(8982));
+$n = $s->io('1', read => 1);
+ok($n, 'requests 2 create');
+is($s->read(), '1', 'requests 2 create - response');
+
+is($s->io('1', read => 1), $n, 'requests 2 second - binding saved');
+is($s->read(), '1', 'requests 2 second - response');
+
+isnt($s->io('1', read => 1), $n, 'requests 2 follow - binding lost');
+is($s->read(), '1', 'requests 2 follow - response');
+
+# proxy_requests unset, binding is not dropped across streams
+
+$s = dgram('127.0.0.1:' . port(8983));
+$n = $s->io('1', read => 1);
+ok($n, 'requests unset create');
+is($s->read(), '1', 'requests unset create - response');
+
+is($s->io('1', read => 1), $n, 'requests unset second - binding saved');
+is($s->read(), '1', 'requests unset second - response');
+
+is($s->io('1', read => 1), $n, 'requests unset follow - binding saved');
+is($s->read(), '1', 'requests unset follow - response');
+
+# proxy_requests 2, with slow backend
+# client sends 5 packets, each responded with 3 packets
+# expects all packets proxied from backend, the last (uneven) session succeed
+
+$s = dgram('127.0.0.1:' . port(8984));
+$s->write('2') for 1 .. 5;
+my $b = join ' ', map { $s->read() } (1 .. 15);
+like($b, qr/^(\d+ 1 2) \1 (?!\1)(\d+ 1 2) \2 (?!\2)\d+ 1 2$/, 'slow backend');
+
+# proxy_requests 2, proxy_responses 2
+# client sends 5 packets, each responded with 2 packets
+# expects all packets proxied from backend, the last (uneven) session succeed
+
+$s = dgram('127.0.0.1:' . port(8985));
+$s->write('1') for 1 .. 5;
+$b = join ' ', map { $s->read() } (1 .. 10);
+like($b, qr/^(\d+ 1) \1 (?!\1)(\d+ 1) \2 (?!\2)\d+ 1$/, 'requests - responses');
+
+$t->stop();
+
+is($t->read_file('s.log'), <<EOF, 'uneven session status - slow backend');
+200
+200
+200
+EOF
+
+is($t->read_file('s2.log'), <<EOF, 'uneven session status - responses');
+200
+200
+200
+EOF
+
+###############################################################################
+
+sub udp_daemon {
+	my ($t, $port) = @_;
+
+	my $server = IO::Socket::INET->new(
+		Proto => 'udp',
+		LocalAddr => "127.0.0.1:$port",
+		Reuse => 1
+	)
+		or die "Can't create listening socket: $!\n";
+
+	# signal we are ready
+
+	open my $fh, '>', $t->testdir() . "/$port";
+	close $fh;
+
+	my $slp = 1 if $port == port(8991);
+
+	while (1) {
+		$server->recv(my $buffer, 65536);
+		sleep 1, $slp = 0 if $slp;
+
+		$server->send($server->peerport());
+		$server->send($_) for (1 .. $buffer);
+	}
+}
+
+###############################################################################