new file mode 100644
--- /dev/null
+++ b/h3_ssl_early_data.t
@@ -0,0 +1,108 @@
+#!/usr/bin/perl
+
+# (C) Sergey Kandaurov
+# (C) Nginx, Inc.
+
+# Tests for TLS early data with HTTP/3.
+
+###############################################################################
+
+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;
+
+my $t = Test::Nginx->new()->has(qw/http http_v3 cryptx/)
+	->has_daemon('openssl')->plan(5)
+	->write_file_expand('nginx.conf', <<'EOF');
+
+%%TEST_GLOBALS%%
+
+daemon off;
+
+events {
+}
+
+http {
+    %%TEST_GLOBALS_HTTP%%
+
+    ssl_certificate_key localhost.key;
+    ssl_certificate localhost.crt;
+    ssl_early_data on;
+
+    add_header X-Session $ssl_session_reused always;
+    add_header X-Early   $ssl_early_data     always;
+
+    server {
+        listen       127.0.0.1:%%PORT_8980_UDP%% quic;
+        server_name  localhost;
+    }
+}
+
+EOF
+
+$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 $s = Test::Nginx::HTTP3->new(8980);
+my $frames = $s->read(all => [{ sid => $s->new_stream(), fin => 1 }]);
+
+my ($frame) = grep { $_->{type} eq "HEADERS" } @$frames;
+is($frame->{headers}->{'x-session'}, '.', 'new session');
+
+local $TODO = 'no TLSv1.3 sessions in LibreSSL' if $t->has_module('LibreSSL');
+
+my $psk_list = $s->{psk_list};
+my $ed = $s->build_new_stream();
+
+$s = Test::Nginx::HTTP3->new(8980, psk_list => $psk_list, early_data => {});
+
+TODO: {
+local $TODO = 'no 0-RTT in OpenSSL compat layer'
+	unless $t->has_module('OpenSSL [.0-9]+\+quic')
+	or $t->has_module('BoringSSL')
+	or $t->has_module('LibreSSL');
+
+$frames = $s->read(all => [{ sid => 0, fin => 1 }]);
+($frame) = grep { $_->{type} eq "HEADERS" } @$frames;
+is($frame->{headers}->{'x-session'}, 'r', 'reused session 0rtt');
+is($frame->{headers}->{'x-early'}, '1', 'reused session is early');
+
+}
+
+$frames = $s->read(all => [{ sid => $s->new_stream(), fin => 1 }]);
+($frame) = grep { $_->{type} eq "HEADERS" } @$frames;
+is($frame->{headers}->{'x-session'}, 'r', 'reused session 1rtt');
+is($frame->{headers}->{'x-early'}, undef, 'reused session not early');
+
+###############################################################################