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187 lines (187 loc) · 9.6 KB
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/*
This file is part of libhttpserver
Copyright (C) 2011-2026 Sebastiano Merlino
SPDX-License-Identifier: LGPL-2.1-or-later
*/
#include <vector>
#include <httpserver/detail/http2_connection.hpp>
#include "./http2_fixture.hpp"
#include "./littletest.hpp"
using namespace h2test; // NOLINT(build/namespaces)
LT_BEGIN_SUITE(http2_settings_suite)
void set_up() {}
void tear_down() {}
LT_END_SUITE(http2_settings_suite)
LT_BEGIN_AUTO_TEST(http2_settings_suite, initial_settings_precedes_peer_ack_and_directions_are_independent)
hd::http2_connection c(budget());
LT_CHECK_EQ(c.peer_settings().header_table_size, 4096U);
LT_CHECK(!c.peer_settings().max_concurrent_streams);
LT_CHECK(!c.peer_settings().max_header_list_size);
const auto first = c.output();
LT_ASSERT(first.size() >= 9);
LT_CHECK_EQ(first[3], 4);
LT_CHECK_EQ(first[4], 0);
LT_ASSERT(c.advance_output(first.size()));
LT_CHECK(c.feed(preface()).progress == hd::http2_progress::control_ready);
const auto ack = c.output();
LT_ASSERT(ack.size() == 9);
LT_CHECK_EQ(ack[4], 1);
c.advance_output(9);
LT_CHECK(c.feed(frame(4, 1)).progress == hd::http2_progress::control_ready);
LT_CHECK(c.output().empty());
auto values = setting(1, 0);
append(values, setting(65000, 17));
append(values, setting(1, UINT32_MAX));
append(values, setting(2, 0));
append(values, setting(3, 0));
append(values, setting(4, 0x7fffffff));
append(values, setting(5, 0xffffff));
append(values, setting(6, 0));
LT_CHECK(c.feed(frame(4, 0, 0, values)).progress == hd::http2_progress::control_ready);
LT_CHECK_EQ(c.peer_settings().header_table_size, UINT32_MAX);
LT_CHECK_EQ(c.peer_settings().max_frame_size, 0xffffffU);
LT_CHECK_EQ(c.peer_settings().initial_window_size, 0x7fffffffU);
LT_CHECK_EQ(c.peer_settings().max_concurrent_streams.value(), 0U);
LT_CHECK_EQ(c.compression().encoder().peer_maximum(), UINT32_MAX);
LT_CHECK_EQ(c.compression().encoder().table().capacity(), 0U);
LT_CHECK_EQ(c.compression().decoder().acknowledged_maximum(), 4096U);
hd::http2_connection other(budget());
LT_CHECK_EQ(other.peer_settings().max_frame_size, 16384U);
LT_CHECK_EQ(other.compression().encoder().table().capacity(), 4096U);
LT_CHECK(c.feed(frame(99, 0, 0, std::vector<std::uint8_t>(16385))).error.has_value());
LT_END_AUTO_TEST(initial_settings_precedes_peer_ack_and_directions_are_independent)
LT_BEGIN_AUTO_TEST(http2_settings_suite, every_invalid_occurrence_aborts_without_successful_ack)
for (auto [id, value, code] : std::vector<std::tuple<unsigned, std::uint32_t, hd::http2_error_code>>{
{2, 2, hd::http2_error_code::protocol_error}, {4, 0x80000000, hd::http2_error_code::flow_control_error},
{5, 16383, hd::http2_error_code::protocol_error}, {5, 0x1000000, hd::http2_error_code::protocol_error}}) {
hd::http2_connection c(budget());
auto first = c.output();
c.advance_output(first.size());
auto wire = std::vector<std::uint8_t>(hd::http2_magic.begin(), hd::http2_magic.end());
auto values = setting(id, value);
append(values, setting(id, id == 5 ? 16384 : 0));
append(wire, frame(4, 0, 0, values));
auto result = c.feed(wire);
LT_ASSERT(result.error.has_value());
LT_CHECK(result.error->wire_code == code);
LT_CHECK_EQ(c.peer_settings().header_table_size, 4096U);
LT_CHECK_EQ(c.output()[3], 7);
LT_CHECK_EQ(c.feed(preface()).consumed, 0U);
}
LT_END_AUTO_TEST(every_invalid_occurrence_aborts_without_successful_ack)
LT_BEGIN_AUTO_TEST(http2_settings_suite, local_updates_ack_fifo_and_deadline_starts_on_output)
hd::http2_limits limits;
limits.settings_timeout = std::chrono::seconds(3);
hd::http2_connection c(budget(), limits);
auto now = hd::http2_connection::time_point {} + std::chrono::seconds(100);
LT_CHECK(!c.check_timeout(now));
c.advance_output(c.output(now).size());
c.feed(preface(), now);
c.advance_output(c.output(now).size());
c.feed(frame(4, 1), now);
auto local = c.local_settings();
local.header_table_size = 0;
LT_CHECK(c.queue_settings(local) == httpserver::http::outcome_code::ok);
c.advance_output(c.output(now).size());
local.header_table_size = 8192;
LT_CHECK(c.queue_settings(local) == httpserver::http::outcome_code::ok);
c.advance_output(c.output(now + std::chrono::seconds(1)).size());
LT_CHECK_EQ(c.pending_settings(), 2U);
LT_CHECK(c.feed(frame(4, 1), now).progress == hd::http2_progress::control_ready);
LT_CHECK_EQ(c.compression().decoder().acknowledged_maximum(), 0U);
LT_CHECK(!c.check_timeout(now + std::chrono::seconds(3)));
LT_ASSERT(c.check_timeout(now + std::chrono::seconds(4)).has_value());
LT_CHECK(c.failure()->wire_code == hd::http2_error_code::settings_timeout);
LT_CHECK_EQ(c.pending_settings(), 0U);
LT_END_AUTO_TEST(local_updates_ack_fifo_and_deadline_starts_on_output)
LT_BEGIN_AUTO_TEST(http2_settings_suite, unexpected_ack_and_wrong_first_frame)
for (const auto& invalid : {frame(4, 1), frame(6, 0, 0, std::vector<std::uint8_t>(8)), frame(4, 0, 1), frame(4, 1, 0, {0})}) {
hd::http2_connection c(budget());
std::vector<std::uint8_t> wire(hd::http2_magic.begin(), hd::http2_magic.end());
append(wire, invalid);
LT_CHECK(c.feed(wire).error.has_value());
}
hd::http2_connection c(budget());
c.feed(preface());
LT_CHECK(c.feed(frame(4, 1)).error.has_value());
LT_END_AUTO_TEST(unexpected_ack_and_wrong_first_frame)
LT_BEGIN_AUTO_TEST(http2_settings_suite, legal_endpoints_and_fifo_acknowledges_both_snapshots)
for (const auto& values : {std::vector<std::uint8_t>{}, setting(2, 1), setting(4, 0), setting(5, 16384), setting(6, UINT32_MAX), setting(3, UINT32_MAX)}) {
hd::http2_connection c(budget());
c.advance_output(c.output().size());
std::vector<std::uint8_t> wire(hd::http2_magic.begin(), hd::http2_magic.end());
append(wire, frame(4, 0, 0, values));
LT_CHECK(!c.feed(wire).error);
LT_CHECK_EQ(c.output().size(), 9U);
}
hd::http2_connection c(budget());
c.advance_output(c.output().size());
c.feed(preface());
c.advance_output(c.output().size());
c.feed(frame(4, 1));
hd::http2_settings local;
local.header_table_size = 0;
c.queue_settings(local);
c.advance_output(c.output().size());
local.header_table_size = 8192;
c.queue_settings(local);
c.advance_output(c.output().size());
LT_CHECK(!c.feed(frame(4, 1)).error);
LT_CHECK_EQ(c.compression().decoder().acknowledged_maximum(), 0U);
LT_CHECK(!c.feed(frame(4, 1)).error);
LT_CHECK_EQ(c.compression().decoder().acknowledged_maximum(), 8192U);
LT_CHECK_EQ(c.pending_settings(), 0U);
LT_CHECK(c.output().empty());
LT_CHECK(c.feed(frame(4, 1)).error.has_value());
LT_END_AUTO_TEST(legal_endpoints_and_fifo_acknowledges_both_snapshots)
LT_BEGIN_AUTO_TEST(http2_settings_suite, advisory_local_limits_are_preserved_when_update_omits_them)
hd::http2_connection c(budget());
c.advance_output(c.output().size());
c.feed(preface());
c.advance_output(c.output().size());
c.feed(frame(4, 1));
hd::http2_settings local;
local.max_concurrent_streams = 7;
local.max_header_list_size = 4096;
LT_CHECK(c.queue_settings(local) == httpserver::http::outcome_code::ok);
local.max_concurrent_streams.reset();
local.max_header_list_size.reset();
LT_CHECK(c.queue_settings(local) == httpserver::http::outcome_code::ok);
c.advance_output(c.output().size());
c.advance_output(c.output().size());
LT_CHECK_EQ(c.local_settings().max_concurrent_streams.value_or(0), 7U);
LT_CHECK_EQ(c.local_settings().max_header_list_size.value_or(0), 4096U);
LT_END_AUTO_TEST(advisory_local_limits_are_preserved_when_update_omits_them)
LT_BEGIN_AUTO_TEST(http2_settings_suite, connect_setting_rejects_invalid_values_and_revocation)
for (auto values : {setting(8, 2), setting(8, UINT32_MAX)}) {
hd::http2_connection c(budget()); c.feed(preface());
auto result = c.feed(frame(4, 0, 0, values));
LT_ASSERT(result.error); LT_CHECK(result.error->wire_code == hd::http2_error_code::protocol_error);
}
for (bool same_frame : {true, false}) {
hd::http2_connection c(budget()); c.feed(preface());
auto values = setting(8, 1);
if (same_frame) append(values, setting(8, 0));
auto result = c.feed(frame(4, 0, 0, values));
if (!same_frame) {
LT_CHECK(!result.error); result = c.feed(frame(4, 0, 0, setting(8, 0)));
}
LT_ASSERT(result.error); LT_CHECK(result.error->wire_code == hd::http2_error_code::protocol_error);
}
LT_END_AUTO_TEST(connect_setting_rejects_invalid_values_and_revocation)
LT_BEGIN_AUTO_TEST(http2_settings_suite, local_connect_capability_is_advertised_and_cannot_be_revoked)
hd::http2_settings settings;
// The standalone connection may advertise the capability explicitly.
settings.enable_connect_protocol = 1;
settings.max_concurrent_streams = 10; settings.max_header_list_size = 4096;
hd::http2_connection c(budget(), {}, settings);
auto wire = c.output(); LT_ASSERT_EQ(wire.size(), 45u);
LT_CHECK_EQ(wire[wire.size() - 5], 8); LT_CHECK_EQ(wire.back(), 1);
LT_CHECK_EQ(c.local_settings().enable_connect_protocol, 1u);
settings.enable_connect_protocol = 0;
LT_CHECK(c.queue_settings(settings) == httpserver::http::outcome_code::invalid_argument);
LT_CHECK_EQ(c.peer_settings().enable_connect_protocol, 0u);
LT_END_AUTO_TEST(local_connect_capability_is_advertised_and_cannot_be_revoked)
LT_BEGIN_AUTO_TEST_ENV()
AUTORUN_TESTS()
LT_END_AUTO_TEST_ENV()