new file mode 100644
--- /dev/null
+++ b/stream_realip.t
@@ -0,0 +1,172 @@
+#!/usr/bin/perl
+
+# (C) Sergey Kandaurov
+# (C) Nginx, Inc.
+
+# Tests for stream realip module, server side proxy protocol.
+
+###############################################################################
+
+use warnings;
+use strict;
+
+use Test::More;
+
+use IO::Select;
+use Socket qw/ $CRLF /;
+
+BEGIN { use FindBin; chdir($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_return stream_realip ipv6/)
+	->write_file_expand('nginx.conf', <<'EOF');
+
+%%TEST_GLOBALS%%
+
+daemon off;
+
+events {
+}
+
+stream {
+    server {
+        listen      127.0.0.1:8083 proxy_protocol;
+        listen      127.0.0.1:8084;
+        return      $proxy_protocol_addr:$proxy_protocol_port;
+    }
+
+    server {
+        listen      127.0.0.1:8085 proxy_protocol;
+        proxy_pass  127.0.0.1:8081;
+    }
+
+    server {
+        listen      127.0.0.1:8086 proxy_protocol;
+        listen      [::1]:%%PORT_8086%% proxy_protocol;
+        return      "$remote_addr:$remote_port:
+                     $realip_remote_addr:$realip_remote_port";
+
+        set_real_ip_from ::1;
+        set_real_ip_from 127.0.0.2;
+    }
+
+    server {
+        listen      127.0.0.1:8087;
+        proxy_pass  [::1]:%%PORT_8086%%;
+    }
+
+    server {
+        listen      127.0.0.1:8088 proxy_protocol;
+        listen      [::1]:%%PORT_8088%% proxy_protocol;
+        return      "$remote_addr:$remote_port:
+                     $realip_remote_addr:$realip_remote_port";
+
+        set_real_ip_from 127.0.0.1;
+        set_real_ip_from ::2;
+    }
+
+    server {
+        listen      127.0.0.1:8089;
+        proxy_pass  [::1]:%%PORT_8088%%;
+    }
+}
+
+EOF
+
+$t->run_daemon(\&stream_daemon);
+$t->try_run('no stream proxy_protocol and/or inet6 support')->plan(8);
+$t->waitforsocket('127.0.0.1:' . port(8081));
+
+###############################################################################
+
+is(stream('127.0.0.1:' . port(8083))
+	->io("PROXY TCP4 192.0.2.1 192.0.2.2 1234 5678${CRLF}"),
+	'192.0.2.1:1234', 'server');
+
+is(stream('127.0.0.1:' . port(8084))
+	->io("PROXY TCP4 192.0.2.1 192.0.2.2 1234 5678${CRLF}"),
+	':', 'server off');
+
+is(stream('127.0.0.1:' . port(8085))
+	->io("PROXY TCP4 192.0.2.1 192.0.2.2 1234 5678${CRLF}close"),
+	'close', 'server payload');
+
+like(stream('127.0.0.1:' . port(8086))
+	->io("PROXY TCP4 192.0.2.1 192.0.2.2 1234 5678${CRLF}"),
+	qr/^(\Q127.0.0.1:\E\d+):\s+\1$/, 'server ipv6 realip - no match');
+
+like(stream('127.0.0.1:' . port(8087))
+	->io("PROXY TCP4 192.0.2.1 192.0.2.2 1234 5678${CRLF}"),
+	qr/\Q192.0.2.1:1234:\E\s+\Q::1:\E\d+/, 'server ipv6 realip');
+
+like(stream('127.0.0.1:' . port(8088))
+	->io("PROXY TCP4 192.0.2.1 192.0.2.2 1234 5678${CRLF}"),
+	qr/\Q192.0.2.1:1234:\E\s+\Q127.0.0.1:\E\d+/, 'server ipv4 realip');
+
+like(stream('127.0.0.1:' . port(8089))
+	->io("PROXY TCP4 192.0.2.1 192.0.2.2 1234 5678${CRLF}"),
+	qr/^(::1:\d+):\s+\1$/, 'server ipv4 realip - no match');
+
+like(stream('127.0.0.1:' . port(8088))
+	->io("PROXY UNKNOWN TCP4 192.0.2.1 192.0.2.2 1234 5678${CRLF}"),
+	qr/^(\Q127.0.0.1:\E\d+):\s+\1$/, 'server unknown');
+
+###############################################################################
+
+sub stream_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";
+
+	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 $buffer");
+
+	log2o("$client $buffer");
+
+	$client->syswrite($buffer);
+
+	return $buffer =~ /close/;
+}
+
+sub log2i { Test::Nginx::log_core('|| <<', @_); }
+sub log2o { Test::Nginx::log_core('|| >>', @_); }
+sub log2c { Test::Nginx::log_core('||', @_); }
+
+###############################################################################