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Tests: fixed ClientHello with resending Initial QUIC packets. Previously it was rebuilt each time using distinct ClientHello.random resulting in different CRYPTO payload. As such, it led to TLS digest hash and derived secrets mismatch when resending Initial packet. Now ClientHello is built once and reused when resending Initial packets. Additionally, this required to preserve a generated secret value used in shared secret calculation as part of TLS key schedule. Previously it was regenerated when receiving a Retry packet, but this won't work with reused ClientHello as the resulting shared secrets won't match.
author Sergey Kandaurov <pluknet@nginx.com>
date Wed, 30 Aug 2023 02:22:58 +0400
parents 236d038dc04a
children
line wrap: on
line source

#!/usr/bin/perl

# (C) Sergey Kandaurov
# (C) Nginx, Inc.

# Tests for HTTP/2 protocol with priority.

###############################################################################

use warnings;
use strict;

use Test::More;

BEGIN { use FindBin; chdir($FindBin::Bin); }

use lib 'lib';
use Test::Nginx;
use Test::Nginx::HTTP2;

###############################################################################

select STDERR; $| = 1;
select STDOUT; $| = 1;

my $t = Test::Nginx->new()->has(qw/http http_v2/)->plan(20)
	->write_file_expand('nginx.conf', <<'EOF');

%%TEST_GLOBALS%%

daemon off;

events {
}

http {
    %%TEST_GLOBALS_HTTP%%

    server {
        listen       127.0.0.1:8080 http2;
        server_name  localhost;
    }
}

EOF

# suppress deprecation warning

open OLDERR, ">&", \*STDERR; close STDERR;
$t->run();
open STDERR, ">&", \*OLDERR;

# file size is slightly beyond initial window size: 2**16 + 80 bytes

$t->write_file('t1.html',
	join('', map { sprintf "X%04dXXX", $_ } (1 .. 8202)));

$t->write_file('t2.html', 'SEE-THIS');

###############################################################################

# stream muliplexing + PRIORITY frames

my $s = Test::Nginx::HTTP2->new();
my $sid = $s->new_stream({ path => '/t1.html' });
$s->read(all => [{ sid => $sid, length => 2**16 - 1 }]);

my $sid2 = $s->new_stream({ path => '/t2.html' });
$s->read(all => [{ sid => $sid2, fin => 0x4 }]);

$s->h2_priority(0, $sid);
$s->h2_priority(255, $sid2);

$s->h2_window(2**17, $sid);
$s->h2_window(2**17, $sid2);
$s->h2_window(2**17);

my $frames = $s->read(all => [
	{ sid => $sid, fin => 1 },
	{ sid => $sid2, fin => 1 }
]);

my @data = grep { $_->{type} eq "DATA" } @$frames;
is(join(' ', map { $_->{sid} } @data), "$sid2 $sid", 'weight - PRIORITY 1');

# and vice versa

$s = Test::Nginx::HTTP2->new();
$sid = $s->new_stream({ path => '/t1.html' });
$s->read(all => [{ sid => $sid, length => 2**16 - 1 }]);

$sid2 = $s->new_stream({ path => '/t2.html' });
$s->read(all => [{ sid => $sid2, fin => 0x4 }]);

$s->h2_priority(255, $sid);
$s->h2_priority(0, $sid2);

$s->h2_window(2**17, $sid);
$s->h2_window(2**17, $sid2);
$s->h2_window(2**17);

$frames = $s->read(all => [
	{ sid => $sid, fin => 1 },
	{ sid => $sid2, fin => 1 }
]);

@data = grep { $_->{type} eq "DATA" } @$frames;
is(join(' ', map { $_->{sid} } @data), "$sid $sid2", 'weight - PRIORITY 2');

# stream muliplexing + HEADERS PRIORITY flag

$s = Test::Nginx::HTTP2->new();
$sid = $s->new_stream({ path => '/t1.html', prio => 0 });
$s->read(all => [{ sid => $sid, length => 2**16 - 1 }]);

$sid2 = $s->new_stream({ path => '/t2.html', prio => 255 });
$s->read(all => [{ sid => $sid2, fin => 0x4 }]);

$s->h2_window(2**17, $sid);
$s->h2_window(2**17, $sid2);
$s->h2_window(2**17);

$frames = $s->read(all => [
	{ sid => $sid, fin => 1 },
	{ sid => $sid2, fin => 1 }
]);

@data = grep { $_->{type} eq "DATA" } @$frames;
my $sids = join ' ', map { $_->{sid} } @data;
is($sids, "$sid2 $sid", 'weight - HEADERS PRIORITY 1');

# and vice versa

$s = Test::Nginx::HTTP2->new();
$sid = $s->new_stream({ path => '/t1.html', prio => 255 });
$s->read(all => [{ sid => $sid, length => 2**16 - 1 }]);

$sid2 = $s->new_stream({ path => '/t2.html', prio => 0 });
$s->read(all => [{ sid => $sid2, fin => 0x4 }]);

$s->h2_window(2**17, $sid);
$s->h2_window(2**17, $sid2);
$s->h2_window(2**17);

$frames = $s->read(all => [
	{ sid => $sid, fin => 1 },
	{ sid => $sid2, fin => 1 }
]);

@data = grep { $_->{type} eq "DATA" } @$frames;
$sids = join ' ', map { $_->{sid} } @data;
is($sids, "$sid $sid2", 'weight - HEADERS PRIORITY 2');

# 5.3.1.  Stream Dependencies

# PRIORITY frame

$s = Test::Nginx::HTTP2->new();

$s->h2_priority(16, 3, 0);
$s->h2_priority(16, 1, 3);

$sid = $s->new_stream({ path => '/t1.html' });
$s->read(all => [{ sid => $sid, length => 2**16 - 1 }]);

$sid2 = $s->new_stream({ path => '/t2.html' });
$s->read(all => [{ sid => $sid2, fin => 0x4 }]);

$s->h2_window(2**17, $sid);
$s->h2_window(2**17, $sid2);
$s->h2_window(2**17);

$frames = $s->read(all => [
	{ sid => $sid, fin => 1 },
	{ sid => $sid2, fin => 1 },
]);

@data = grep { $_->{type} eq "DATA" } @$frames;
$sids = join ' ', map { $_->{sid} } @data;
is($sids, "$sid2 $sid", 'dependency - PRIORITY 1');

# and vice versa

$s = Test::Nginx::HTTP2->new();

$s->h2_priority(16, 1, 0);
$s->h2_priority(16, 3, 1);

$sid = $s->new_stream({ path => '/t1.html' });
$s->read(all => [{ sid => $sid, length => 2**16 - 1 }]);

$sid2 = $s->new_stream({ path => '/t2.html' });
$s->read(all => [{ sid => $sid2, fin => 0x4 }]);

$s->h2_window(2**17, $sid);
$s->h2_window(2**17, $sid2);
$s->h2_window(2**17);

$frames = $s->read(all => [
	{ sid => $sid, fin => 1 },
	{ sid => $sid2, fin => 1 },
]);

@data = grep { $_->{type} eq "DATA" } @$frames;
$sids = join ' ', map { $_->{sid} } @data;
is($sids, "$sid $sid2", 'dependency - PRIORITY 2');

# PRIORITY - self dependency

# 5.3.1.  Stream Dependencies
#   A stream cannot depend on itself.  An endpoint MUST treat this as a
#   stream error of type PROTOCOL_ERROR.
# Instead, we respond with a connection error of type PROTOCOL_ERROR.

$s = Test::Nginx::HTTP2->new();
$sid = $s->new_stream();
$s->read(all => [{ sid => $sid, fin => 1 }]);

$s->h2_priority(0, $sid, $sid);
$frames = $s->read(all => [{ type => 'GOAWAY' }]);

my ($frame) = grep { $_->{type} eq "GOAWAY" } @$frames;
is($frame->{last_sid}, $sid, 'dependency - PRIORITY self - GOAWAY');
is($frame->{code}, 1, 'dependency - PRIORITY self - PROTOCOL_ERROR');

# HEADERS PRIORITY flag, reprioritize prior PRIORITY frame records

$s = Test::Nginx::HTTP2->new();

$s->h2_priority(16, 1, 0);
$s->h2_priority(16, 3, 0);

$sid = $s->new_stream({ path => '/t1.html', dep => 3 });
$s->read(all => [{ sid => $sid, length => 2**16 - 1 }]);

$sid2 = $s->new_stream({ path => '/t2.html' });
$s->read(all => [{ sid => $sid2, fin => 0x4 }]);

$s->h2_window(2**17, $sid);
$s->h2_window(2**17, $sid2);
$s->h2_window(2**17);

$frames = $s->read(all => [
	{ sid => $sid, fin => 1 },
	{ sid => $sid2, fin => 1 },
]);

@data = grep { $_->{type} eq "DATA" } @$frames;
$sids = join ' ', map { $_->{sid} } @data;
is($sids, "$sid2 $sid", 'dependency - HEADERS PRIORITY 1');

# and vice versa

$s = Test::Nginx::HTTP2->new();

$s->h2_priority(16, 1, 0);
$s->h2_priority(16, 3, 0);

$sid = $s->new_stream({ path => '/t1.html' });
$s->read(all => [{ sid => $sid, length => 2**16 - 1 }]);

$sid2 = $s->new_stream({ path => '/t2.html', dep => 1 });
$s->read(all => [{ sid => $sid2, fin => 0x4 }]);

$s->h2_window(2**17, $sid);
$s->h2_window(2**17, $sid2);
$s->h2_window(2**17);

$frames = $s->read(all => [
	{ sid => $sid, fin => 1 },
	{ sid => $sid2, fin => 1 },
]);

@data = grep { $_->{type} eq "DATA" } @$frames;
$sids = join ' ', map { $_->{sid} } @data;
is($sids, "$sid $sid2", 'dependency - HEADERS PRIORITY 2');

# HEADERS - self dependency

$s = Test::Nginx::HTTP2->new();
$sid = $s->new_stream({ dep => 1 });
$frames = $s->read(all => [{ type => 'GOAWAY' }]);

($frame) = grep { $_->{type} eq "GOAWAY" } @$frames;
is($frame->{last_sid}, 0, 'dependency - HEADERS self - GOAWAY');
is($frame->{code}, 1, 'dependency - HEADERS self - PROTOCOL_ERROR');

# PRIORITY frame, weighted dependencies

$s = Test::Nginx::HTTP2->new();

$s->h2_priority(16, 5, 0);
$s->h2_priority(255, 1, 5);
$s->h2_priority(0, 3, 5);

$sid = $s->new_stream({ path => '/t1.html' });
$s->read(all => [{ sid => $sid, length => 2**16 - 1 }]);

$sid2 = $s->new_stream({ path => '/t2.html' });
$s->read(all => [{ sid => $sid2, fin => 0x4 }]);

my $sid3 = $s->new_stream({ path => '/t2.html' });
$s->read(all => [{ sid => $sid3, fin => 0x4 }]);

$s->h2_window(2**16, 1);
$s->h2_window(2**16, 3);
$s->h2_window(2**16, 5);
$s->h2_window(2**16);

$frames = $s->read(all => [
	{ sid => $sid, fin => 1 },
	{ sid => $sid2, fin => 1 },
	{ sid => $sid3, fin => 1 },
]);

@data = grep { $_->{type} eq "DATA" } @$frames;
$sids = join ' ', map { $_->{sid} } @data;
is($sids, "$sid3 $sid $sid2", 'weighted dependency - PRIORITY 1');

# and vice versa

$s = Test::Nginx::HTTP2->new();

$s->h2_priority(16, 5, 0);
$s->h2_priority(0, 1, 5);
$s->h2_priority(255, 3, 5);

$sid = $s->new_stream({ path => '/t1.html' });
$s->read(all => [{ sid => $sid, length => 2**16 - 1 }]);

$sid2 = $s->new_stream({ path => '/t2.html' });
$s->read(all => [{ sid => $sid2, fin => 0x4 }]);

$sid3 = $s->new_stream({ path => '/t2.html' });
$s->read(all => [{ sid => $sid3, fin => 0x4 }]);

$s->h2_window(2**16, 1);
$s->h2_window(2**16, 3);
$s->h2_window(2**16, 5);
$s->h2_window(2**16);

$frames = $s->read(all => [
	{ sid => $sid, fin => 1 },
	{ sid => $sid2, fin => 1 },
	{ sid => $sid3, fin => 1 },
]);

@data = grep { $_->{type} eq "DATA" } @$frames;
$sids = join ' ', map { $_->{sid} } @data;
is($sids, "$sid3 $sid2 $sid", 'weighted dependency - PRIORITY 2');

# PRIORITY - reprioritization with circular dependency - after [3] removed
# initial dependency tree:
# 1 <- [3] <- 5

$s = Test::Nginx::HTTP2->new();

$s->h2_window(2**18);

$s->h2_priority(16, 1, 0);
$s->h2_priority(16, 3, 1);
$s->h2_priority(16, 5, 3);

$sid = $s->new_stream({ path => '/t1.html' });
$s->read(all => [{ sid => $sid, length => 2**16 - 1 }]);

$sid2 = $s->new_stream({ path => '/t1.html' });
$s->read(all => [{ sid => $sid2, length => 2**16 - 1 }]);

$sid3 = $s->new_stream({ path => '/t1.html' });
$s->read(all => [{ sid => $sid3, length => 2**16 - 1 }]);

$s->h2_window(2**16, $sid2);

$frames = $s->read(all => [{ sid => $sid2, fin => 1 }]);
$sids = join ' ', map { $_->{sid} } grep { $_->{type} eq "DATA" } @$frames;
is($sids, $sid2, 'removed dependency');

for (1 .. 40) {
	$s->read(all => [{ sid => $s->new_stream(), fin => 1 }]);
}

# make circular dependency
# 1 <- 5 -- current dependency tree before reprioritization
# 5 <- 1
# 1 <- 5

$s->h2_priority(16, 1, 5);
$s->h2_priority(16, 5, 1);

$s->h2_window(2**16, $sid);
$s->h2_window(2**16, $sid3);

$frames = $s->read(all => [
	{ sid => $sid, fin => 1 },
	{ sid => $sid3, fin => 1 },
]);

($frame) = grep { $_->{type} eq "DATA" && $_->{sid} == $sid } @$frames;
is($frame->{length}, 81, 'removed dependency - first stream');

($frame) = grep { $_->{type} eq "DATA" && $_->{sid} == $sid3 } @$frames;
is($frame->{length}, 81, 'removed dependency - last stream');

# PRIORITY - reprioritization with circular dependency - exclusive [5]
# 1 <- [5] <- 3

$s = Test::Nginx::HTTP2->new();

$s->h2_window(2**18);

$s->h2_priority(16, 1, 0);
$s->h2_priority(16, 3, 1);
$s->h2_priority(16, 5, 1, excl => 1);

$sid = $s->new_stream({ path => '/t1.html' });
$s->read(all => [{ sid => $sid, length => 2**16 - 1 }]);

$sid2 = $s->new_stream({ path => '/t1.html' });
$s->read(all => [{ sid => $sid2, length => 2**16 - 1 }]);

$sid3 = $s->new_stream({ path => '/t1.html' });
$s->read(all => [{ sid => $sid3, length => 2**16 - 1 }]);

$s->h2_window(2**16, $sid);

$frames = $s->read(all => [{ sid => $sid, fin => 1 }]);
$sids = join ' ', map { $_->{sid} } grep { $_->{type} eq "DATA" } @$frames;
is($sids, $sid, 'exclusive dependency - parent removed');

# make circular dependency
# 5 <- 3 -- current dependency tree before reprioritization
# 3 <- 5

$s->h2_priority(16, 5, 3);

$s->h2_window(2**16, $sid2);
$s->h2_window(2**16, $sid3);

$frames = $s->read(all => [
	{ sid => $sid2, fin => 1 },
	{ sid => $sid3, fin => 1 },
]);

($frame) = grep { $_->{type} eq "DATA" && $_->{sid} == $sid2 } @$frames;
is($frame->{length}, 81, 'exclusive dependency - first stream');

($frame) = grep { $_->{type} eq "DATA" && $_->{sid} == $sid3 } @$frames;
is($frame->{length}, 81, 'exclusive dependency - last stream');

###############################################################################