new file mode 100644
--- /dev/null
+++ b/h3_server_tokens.t
@@ -0,0 +1,165 @@
+#!/usr/bin/perl
+
+# (C) Andrey Zelenkov
+# (C) Nginx, Inc.
+
+# Tests for HTTP/3 protocol with server_tokens directive.
+
+###############################################################################
+
+use warnings;
+use strict;
+
+use Test::More;
+
+BEGIN { use FindBin; chdir($FindBin::Bin); }
+
+use lib 'lib';
+use Test::Nginx;
+use Test::Nginx::HTTP3;
+
+###############################################################################
+
+select STDERR; $| = 1;
+select STDOUT; $| = 1;
+
+eval { require Crypt::Misc; die if $Crypt::Misc::VERSION < 0.067; };
+plan(skip_all => 'CryptX version >= 0.067 required') if $@;
+
+my $t = Test::Nginx->new()->has(qw/http http_v3 rewrite/)
+	->has_daemon('openssl')->plan(12);
+
+$t->write_file_expand('nginx.conf', <<'EOF');
+
+%%TEST_GLOBALS%%
+
+daemon off;
+
+events {
+}
+
+http {
+    %%TEST_GLOBALS_HTTP%%
+
+    ssl_certificate_key localhost.key;
+    ssl_certificate localhost.crt;
+
+    server {
+        listen       127.0.0.1:%%PORT_8980_UDP%% quic;
+        server_name  localhost;
+
+        location /200 {
+            return 200;
+        }
+
+        location /404 {
+            return 404;
+        }
+
+        location /off {
+            server_tokens off;
+
+            location /off/200 {
+                return 200;
+            }
+
+            location /off/404 {
+                return 404;
+            }
+        }
+
+        location /on {
+            server_tokens on;
+
+            location /on/200 {
+                return 200;
+            }
+
+            location /on/404 {
+                return 404;
+            }
+        }
+
+        location /b {
+            server_tokens build;
+
+            location /b/200 {
+                return 200;
+            }
+
+            location /b/404 {
+                return 404;
+            }
+        }
+    }
+}
+
+EOF
+
+$t->write_file('openssl.conf', <<EOF);
+[ req ]
+default_bits = 2048
+encrypt_key = no
+distinguished_name = req_distinguished_name
+[ req_distinguished_name ]
+EOF
+
+my $d = $t->testdir();
+
+foreach my $name ('localhost') {
+	system('openssl req -x509 -new '
+		. "-config $d/openssl.conf -subj /CN=$name/ "
+		. "-out $d/$name.crt -keyout $d/$name.key "
+		. ">>$d/openssl.out 2>&1") == 0
+		or die "Can't create certificate for $name: $!\n";
+}
+
+$t->run();
+
+###############################################################################
+
+my $re = qr/nginx\/\d+\.\d+\.\d+/;
+
+like(header_server('/200'), qr/^$re$/, 'http3 tokens default 200');
+like(header_server('/404'), qr/^$re$/, 'http3 tokens default 404');
+like(body('/404'), qr/$re/, 'http3 tokens default 404 body');
+
+is(header_server('/off/200'), 'nginx', 'http3 tokens off 200');
+is(header_server('/off/404'), 'nginx', 'http3 tokens off 404');
+like(body('/off/404'), qr/nginx(?!\/)/, 'http3 tokens off 404 body');
+
+like(header_server('/on/200'), qr/^$re$/, 'http3 tokens on 200');
+like(header_server('/on/404'), qr/^$re$/, 'http3 tokens on 404');
+like(body('/on/404'), $re, 'http3 tokens on 404 body');
+
+$re = qr/$re \(.*\)/ if $t->has_module('--build=');
+
+like(header_server('/b/200'), qr/^$re$/, 'http3 tokens build 200');
+like(header_server('/b/404'), qr/^$re$/, 'http3 tokens build 404');
+like(body('/b/404'), qr/$re/, 'http3 tokens build 404 body');
+
+###############################################################################
+
+sub header_server {
+	my ($path) = shift;
+
+	my $s = Test::Nginx::HTTP3->new();
+	my $sid = $s->new_stream({ path => $path });
+	my $frames = $s->read(all => [{ sid => $sid, fin => 1 }]);
+
+	my ($frame) = grep { $_->{type} eq "HEADERS" } @$frames;
+	return $frame->{headers}->{'server'};
+}
+
+sub body {
+	my ($path) = shift;
+
+	my $s = Test::Nginx::HTTP3->new();
+	my $sid = $s->new_stream({ path => $path });
+	my $frames = $s->read(all => [{ sid => $sid, fin => 1 }]);
+
+	my ($frame) = grep { $_->{type} eq "DATA" } @$frames;
+	return $frame->{'data'};
+}
+
+###############################################################################