| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "net/tools/quic/quic_dispatcher.h" |
| |
| #include <memory> |
| #include <ostream> |
| #include <string> |
| |
| #include "base/macros.h" |
| #include "net/quic/core/crypto/crypto_handshake.h" |
| #include "net/quic/core/crypto/quic_crypto_server_config.h" |
| #include "net/quic/core/crypto/quic_random.h" |
| #include "net/quic/core/quic_crypto_stream.h" |
| #include "net/quic/core/quic_flags.h" |
| #include "net/quic/core/quic_utils.h" |
| #include "net/quic/platform/api/quic_logging.h" |
| #include "net/quic/platform/api/quic_str_cat.h" |
| #include "net/quic/test_tools/crypto_test_utils.h" |
| #include "net/quic/test_tools/fake_proof_source.h" |
| #include "net/quic/test_tools/quic_buffered_packet_store_peer.h" |
| #include "net/quic/test_tools/quic_crypto_server_config_peer.h" |
| #include "net/quic/test_tools/quic_test_utils.h" |
| #include "net/quic/test_tools/quic_time_wait_list_manager_peer.h" |
| #include "net/test/gtest_util.h" |
| #include "net/tools/epoll_server/epoll_server.h" |
| #include "net/tools/quic/chlo_extractor.h" |
| #include "net/tools/quic/quic_epoll_alarm_factory.h" |
| #include "net/tools/quic/quic_epoll_connection_helper.h" |
| #include "net/tools/quic/quic_packet_writer_wrapper.h" |
| #include "net/tools/quic/quic_simple_crypto_server_stream_helper.h" |
| #include "net/tools/quic/quic_time_wait_list_manager.h" |
| #include "net/tools/quic/stateless_rejector.h" |
| #include "net/tools/quic/test_tools/mock_quic_time_wait_list_manager.h" |
| #include "net/tools/quic/test_tools/quic_dispatcher_peer.h" |
| #include "testing/gmock/include/gmock/gmock.h" |
| #include "testing/gmock_mutant.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| using std::string; |
| using testing::CreateFunctor; |
| using testing::DoAll; |
| using testing::InSequence; |
| using testing::Invoke; |
| using testing::Return; |
| using testing::WithoutArgs; |
| using testing::_; |
| |
| static const size_t kDefaultMaxConnectionsInStore = 100; |
| static const size_t kMaxConnectionsWithoutCHLO = |
| kDefaultMaxConnectionsInStore / 2; |
| static const int16_t kMaxNumSessionsToCreate = 16; |
| |
| namespace net { |
| namespace test { |
| namespace { |
| |
| class TestQuicSpdyServerSession : public QuicServerSessionBase { |
| public: |
| TestQuicSpdyServerSession(const QuicConfig& config, |
| QuicConnection* connection, |
| const QuicCryptoServerConfig* crypto_config, |
| QuicCompressedCertsCache* compressed_certs_cache) |
| : QuicServerSessionBase(config, |
| connection, |
| nullptr, |
| nullptr, |
| crypto_config, |
| compressed_certs_cache), |
| crypto_stream_(QuicServerSessionBase::GetCryptoStream()) {} |
| |
| ~TestQuicSpdyServerSession() override { delete connection(); }; |
| |
| MOCK_METHOD3(OnConnectionClosed, |
| void(QuicErrorCode error, |
| const string& error_details, |
| ConnectionCloseSource source)); |
| MOCK_METHOD1(CreateIncomingDynamicStream, QuicSpdyStream*(QuicStreamId id)); |
| MOCK_METHOD1(CreateOutgoingDynamicStream, |
| QuicSpdyStream*(SpdyPriority priority)); |
| |
| QuicCryptoServerStreamBase* CreateQuicCryptoServerStream( |
| const QuicCryptoServerConfig* crypto_config, |
| QuicCompressedCertsCache* compressed_certs_cache) override { |
| return new QuicCryptoServerStream( |
| crypto_config, compressed_certs_cache, |
| FLAGS_quic_reloadable_flag_enable_quic_stateless_reject_support, this, |
| stream_helper()); |
| } |
| |
| void SetCryptoStream(QuicCryptoServerStream* crypto_stream) { |
| crypto_stream_ = crypto_stream; |
| } |
| |
| QuicCryptoServerStreamBase* GetCryptoStream() override { |
| return crypto_stream_; |
| } |
| |
| QuicCryptoServerStream::Helper* stream_helper() { |
| return QuicServerSessionBase::stream_helper(); |
| } |
| |
| private: |
| QuicCryptoServerStreamBase* crypto_stream_; |
| |
| DISALLOW_COPY_AND_ASSIGN(TestQuicSpdyServerSession); |
| }; |
| |
| class TestDispatcher : public QuicDispatcher { |
| public: |
| TestDispatcher(const QuicConfig& config, |
| const QuicCryptoServerConfig* crypto_config, |
| QuicVersionManager* version_manager, |
| EpollServer* eps) |
| : QuicDispatcher( |
| config, |
| crypto_config, |
| version_manager, |
| std::unique_ptr<QuicEpollConnectionHelper>( |
| new QuicEpollConnectionHelper(eps, QuicAllocator::BUFFER_POOL)), |
| std::unique_ptr<QuicCryptoServerStream::Helper>( |
| new QuicSimpleCryptoServerStreamHelper( |
| QuicRandom::GetInstance())), |
| std::unique_ptr<QuicEpollAlarmFactory>( |
| new QuicEpollAlarmFactory(eps))) {} |
| |
| MOCK_METHOD2(CreateQuicSession, |
| QuicServerSessionBase*(QuicConnectionId connection_id, |
| const QuicSocketAddress& client_address)); |
| |
| MOCK_METHOD1(ShouldCreateOrBufferPacketForConnection, |
| bool(QuicConnectionId connection_id)); |
| |
| using QuicDispatcher::current_server_address; |
| using QuicDispatcher::current_client_address; |
| }; |
| |
| // A Connection class which unregisters the session from the dispatcher when |
| // sending connection close. |
| // It'd be slightly more realistic to do this from the Session but it would |
| // involve a lot more mocking. |
| class MockServerConnection : public MockQuicConnection { |
| public: |
| MockServerConnection(QuicConnectionId connection_id, |
| MockQuicConnectionHelper* helper, |
| MockAlarmFactory* alarm_factory, |
| QuicDispatcher* dispatcher) |
| : MockQuicConnection(connection_id, |
| helper, |
| alarm_factory, |
| Perspective::IS_SERVER), |
| dispatcher_(dispatcher) {} |
| |
| void UnregisterOnConnectionClosed() { |
| QUIC_LOG(ERROR) << "Unregistering " << connection_id(); |
| dispatcher_->OnConnectionClosed(connection_id(), QUIC_NO_ERROR, |
| "Unregistering."); |
| } |
| |
| private: |
| QuicDispatcher* dispatcher_; |
| }; |
| |
| class QuicDispatcherTest : public ::testing::Test { |
| public: |
| QuicDispatcherTest() |
| : QuicDispatcherTest(crypto_test_utils::ProofSourceForTesting()) {} |
| |
| explicit QuicDispatcherTest(std::unique_ptr<ProofSource> proof_source) |
| : helper_(&eps_, QuicAllocator::BUFFER_POOL), |
| alarm_factory_(&eps_), |
| version_manager_(AllSupportedVersions()), |
| crypto_config_(QuicCryptoServerConfig::TESTING, |
| QuicRandom::GetInstance(), |
| std::move(proof_source)), |
| dispatcher_(new TestDispatcher(config_, |
| &crypto_config_, |
| &version_manager_, |
| &eps_)), |
| time_wait_list_manager_(nullptr), |
| session1_(nullptr), |
| session2_(nullptr), |
| store_(nullptr) {} |
| |
| void SetUp() override { |
| dispatcher_->InitializeWithWriter(new QuicDefaultPacketWriter(1)); |
| // Set the counter to some value to start with. |
| QuicDispatcherPeer::set_new_sessions_allowed_per_event_loop( |
| dispatcher_.get(), kMaxNumSessionsToCreate); |
| ON_CALL(*dispatcher_, ShouldCreateOrBufferPacketForConnection(_)) |
| .WillByDefault(Return(true)); |
| } |
| |
| ~QuicDispatcherTest() override {} |
| |
| MockQuicConnection* connection1() { |
| return reinterpret_cast<MockQuicConnection*>(session1_->connection()); |
| } |
| |
| MockQuicConnection* connection2() { |
| return reinterpret_cast<MockQuicConnection*>(session2_->connection()); |
| } |
| |
| // Process a packet with an 8 byte connection id, |
| // 6 byte packet number, default path id, and packet number 1, |
| // using the first supported version. |
| void ProcessPacket(QuicSocketAddress client_address, |
| QuicConnectionId connection_id, |
| bool has_version_flag, |
| const string& data) { |
| ProcessPacket(client_address, connection_id, has_version_flag, data, |
| PACKET_8BYTE_CONNECTION_ID, PACKET_6BYTE_PACKET_NUMBER); |
| } |
| |
| // Process a packet with a default path id, and packet number 1, |
| // using the first supported version. |
| void ProcessPacket(QuicSocketAddress client_address, |
| QuicConnectionId connection_id, |
| bool has_version_flag, |
| const string& data, |
| QuicConnectionIdLength connection_id_length, |
| QuicPacketNumberLength packet_number_length) { |
| ProcessPacket(client_address, connection_id, has_version_flag, data, |
| connection_id_length, packet_number_length, 1); |
| } |
| |
| // Process a packet using the first supported version. |
| void ProcessPacket(QuicSocketAddress client_address, |
| QuicConnectionId connection_id, |
| bool has_version_flag, |
| const string& data, |
| QuicConnectionIdLength connection_id_length, |
| QuicPacketNumberLength packet_number_length, |
| QuicPacketNumber packet_number) { |
| ProcessPacket(client_address, connection_id, has_version_flag, |
| CurrentSupportedVersions().front(), data, |
| connection_id_length, packet_number_length, packet_number); |
| } |
| |
| // Processes a packet. |
| void ProcessPacket(QuicSocketAddress client_address, |
| QuicConnectionId connection_id, |
| bool has_version_flag, |
| QuicVersion version, |
| const string& data, |
| QuicConnectionIdLength connection_id_length, |
| QuicPacketNumberLength packet_number_length, |
| QuicPacketNumber packet_number) { |
| QuicVersionVector versions(SupportedVersions(version)); |
| std::unique_ptr<QuicEncryptedPacket> packet(ConstructEncryptedPacket( |
| connection_id, has_version_flag, false, packet_number, data, |
| connection_id_length, packet_number_length, &versions)); |
| std::unique_ptr<QuicReceivedPacket> received_packet( |
| ConstructReceivedPacket(*packet, helper_.GetClock()->Now())); |
| |
| if (ChloExtractor::Extract(*packet, versions, nullptr)) { |
| // Add CHLO packet to the beginning to be verified first, because it is |
| // also processed first by new session. |
| data_connection_map_[connection_id].push_front( |
| string(packet->data(), packet->length())); |
| } else { |
| // For non-CHLO, always append to last. |
| data_connection_map_[connection_id].push_back( |
| string(packet->data(), packet->length())); |
| } |
| dispatcher_->ProcessPacket(server_address_, client_address, |
| *received_packet); |
| } |
| |
| void ValidatePacket(QuicConnectionId conn_id, |
| const QuicEncryptedPacket& packet) { |
| EXPECT_EQ(data_connection_map_[conn_id].front().length(), |
| packet.AsStringPiece().length()); |
| EXPECT_EQ(data_connection_map_[conn_id].front(), |
| packet.AsStringPiece().as_string()); |
| data_connection_map_[conn_id].pop_front(); |
| } |
| |
| QuicServerSessionBase* CreateSession( |
| QuicDispatcher* dispatcher, |
| const QuicConfig& config, |
| QuicConnectionId connection_id, |
| const QuicSocketAddress& client_address, |
| MockQuicConnectionHelper* helper, |
| MockAlarmFactory* alarm_factory, |
| const QuicCryptoServerConfig* crypto_config, |
| QuicCompressedCertsCache* compressed_certs_cache, |
| TestQuicSpdyServerSession** session) { |
| MockServerConnection* connection = new MockServerConnection( |
| connection_id, helper, alarm_factory, dispatcher); |
| *session = new TestQuicSpdyServerSession(config, connection, crypto_config, |
| compressed_certs_cache); |
| connection->set_visitor(*session); |
| ON_CALL(*connection, CloseConnection(_, _, _)) |
| .WillByDefault(WithoutArgs(Invoke( |
| connection, &MockServerConnection::UnregisterOnConnectionClosed))); |
| return *session; |
| } |
| |
| void CreateTimeWaitListManager() { |
| time_wait_list_manager_ = new MockTimeWaitListManager( |
| QuicDispatcherPeer::GetWriter(dispatcher_.get()), dispatcher_.get(), |
| &helper_, &alarm_factory_); |
| // dispatcher_ takes the ownership of time_wait_list_manager_. |
| QuicDispatcherPeer::SetTimeWaitListManager(dispatcher_.get(), |
| time_wait_list_manager_); |
| } |
| |
| string SerializeCHLO() { |
| CryptoHandshakeMessage client_hello; |
| client_hello.set_tag(kCHLO); |
| return client_hello.GetSerialized().AsStringPiece().as_string(); |
| } |
| |
| QuicFlagSaver flags_; // Save/restore all QUIC flag values. |
| EpollServer eps_; |
| QuicEpollConnectionHelper helper_; |
| MockQuicConnectionHelper mock_helper_; |
| QuicEpollAlarmFactory alarm_factory_; |
| MockAlarmFactory mock_alarm_factory_; |
| QuicConfig config_; |
| QuicVersionManager version_manager_; |
| QuicCryptoServerConfig crypto_config_; |
| QuicSocketAddress server_address_; |
| std::unique_ptr<TestDispatcher> dispatcher_; |
| MockTimeWaitListManager* time_wait_list_manager_; |
| TestQuicSpdyServerSession* session1_; |
| TestQuicSpdyServerSession* session2_; |
| std::map<QuicConnectionId, std::list<string>> data_connection_map_; |
| QuicBufferedPacketStore* store_; |
| }; |
| |
| TEST_F(QuicDispatcherTest, ProcessPackets) { |
| QuicSocketAddress client_address(QuicIpAddress::Loopback4(), 1); |
| server_address_ = QuicSocketAddress(QuicIpAddress::Any4(), 5); |
| |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(1, client_address)) |
| .WillOnce(testing::Return(CreateSession( |
| dispatcher_.get(), config_, 1, client_address, &mock_helper_, |
| &mock_alarm_factory_, &crypto_config_, |
| QuicDispatcherPeer::GetCache(dispatcher_.get()), &session1_))); |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillOnce(testing::WithArgs<2>(Invoke(CreateFunctor( |
| &QuicDispatcherTest::ValidatePacket, base::Unretained(this), 1)))); |
| ProcessPacket(client_address, 1, true, SerializeCHLO()); |
| EXPECT_EQ(client_address, dispatcher_->current_client_address()); |
| EXPECT_EQ(server_address_, dispatcher_->current_server_address()); |
| |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(2, client_address)) |
| .WillOnce(testing::Return(CreateSession( |
| dispatcher_.get(), config_, 2, client_address, &mock_helper_, |
| &mock_alarm_factory_, &crypto_config_, |
| QuicDispatcherPeer::GetCache(dispatcher_.get()), &session2_))); |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>(session2_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillOnce(testing::WithArgs<2>(Invoke(CreateFunctor( |
| &QuicDispatcherTest::ValidatePacket, base::Unretained(this), 2)))); |
| ProcessPacket(client_address, 2, true, SerializeCHLO()); |
| |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .Times(1) |
| .WillOnce(testing::WithArgs<2>(Invoke(CreateFunctor( |
| &QuicDispatcherTest::ValidatePacket, base::Unretained(this), 1)))); |
| ProcessPacket(client_address, 1, false, "data"); |
| } |
| |
| TEST_F(QuicDispatcherTest, StatelessVersionNegotiation) { |
| QuicSocketAddress client_address(QuicIpAddress::Loopback4(), 1); |
| server_address_ = QuicSocketAddress(QuicIpAddress::Any4(), 5); |
| |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(1, client_address)).Times(0); |
| QuicVersion version = static_cast<QuicVersion>(QuicVersionMin() - 1); |
| ProcessPacket(client_address, 1, true, version, SerializeCHLO(), |
| PACKET_8BYTE_CONNECTION_ID, PACKET_6BYTE_PACKET_NUMBER, 1); |
| } |
| |
| TEST_F(QuicDispatcherTest, Shutdown) { |
| QuicSocketAddress client_address(QuicIpAddress::Loopback4(), 1); |
| |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(_, client_address)) |
| .WillOnce(testing::Return(CreateSession( |
| dispatcher_.get(), config_, 1, client_address, &mock_helper_, |
| &mock_alarm_factory_, &crypto_config_, |
| QuicDispatcherPeer::GetCache(dispatcher_.get()), &session1_))); |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillOnce(testing::WithArgs<2>(Invoke(CreateFunctor( |
| &QuicDispatcherTest::ValidatePacket, base::Unretained(this), 1)))); |
| |
| ProcessPacket(client_address, 1, true, SerializeCHLO()); |
| |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| CloseConnection(QUIC_PEER_GOING_AWAY, _, _)); |
| |
| dispatcher_->Shutdown(); |
| } |
| |
| TEST_F(QuicDispatcherTest, TimeWaitListManager) { |
| CreateTimeWaitListManager(); |
| |
| // Create a new session. |
| QuicSocketAddress client_address(QuicIpAddress::Loopback4(), 1); |
| QuicConnectionId connection_id = 1; |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(connection_id, client_address)) |
| .WillOnce(testing::Return(CreateSession( |
| dispatcher_.get(), config_, connection_id, client_address, |
| &mock_helper_, &mock_alarm_factory_, &crypto_config_, |
| QuicDispatcherPeer::GetCache(dispatcher_.get()), &session1_))); |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillOnce(testing::WithArgs<2>(Invoke(CreateFunctor( |
| &QuicDispatcherTest::ValidatePacket, base::Unretained(this), 1)))); |
| |
| ProcessPacket(client_address, connection_id, true, SerializeCHLO()); |
| |
| // Close the connection by sending public reset packet. |
| QuicPublicResetPacket packet; |
| packet.public_header.connection_id = connection_id; |
| packet.public_header.reset_flag = true; |
| packet.public_header.version_flag = false; |
| packet.rejected_packet_number = 19191; |
| packet.nonce_proof = 132232; |
| std::unique_ptr<QuicEncryptedPacket> encrypted( |
| QuicFramer::BuildPublicResetPacket(packet)); |
| std::unique_ptr<QuicReceivedPacket> received(ConstructReceivedPacket( |
| *encrypted, session1_->connection()->clock()->Now())); |
| EXPECT_CALL(*session1_, OnConnectionClosed(QUIC_PUBLIC_RESET, _, |
| ConnectionCloseSource::FROM_PEER)) |
| .Times(1) |
| .WillOnce(WithoutArgs(Invoke( |
| reinterpret_cast<MockServerConnection*>(session1_->connection()), |
| &MockServerConnection::UnregisterOnConnectionClosed))); |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillOnce( |
| Invoke(reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| &MockQuicConnection::ReallyProcessUdpPacket)); |
| dispatcher_->ProcessPacket(QuicSocketAddress(), client_address, *received); |
| EXPECT_TRUE(time_wait_list_manager_->IsConnectionIdInTimeWait(connection_id)); |
| |
| // Dispatcher forwards subsequent packets for this connection_id to the time |
| // wait list manager. |
| EXPECT_CALL(*time_wait_list_manager_, |
| ProcessPacket(_, _, connection_id, _, _)) |
| .Times(1); |
| EXPECT_CALL(*time_wait_list_manager_, AddConnectionIdToTimeWait(_, _, _, _)) |
| .Times(0); |
| ProcessPacket(client_address, connection_id, true, "data"); |
| } |
| |
| TEST_F(QuicDispatcherTest, NoVersionPacketToTimeWaitListManager) { |
| CreateTimeWaitListManager(); |
| |
| QuicSocketAddress client_address(QuicIpAddress::Loopback4(), 1); |
| QuicConnectionId connection_id = 1; |
| // Dispatcher forwards all packets for this connection_id to the time wait |
| // list manager. |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(_, _)).Times(0); |
| EXPECT_CALL(*time_wait_list_manager_, |
| ProcessPacket(_, _, connection_id, _, _)) |
| .Times(1); |
| EXPECT_CALL(*time_wait_list_manager_, AddConnectionIdToTimeWait(_, _, _, _)) |
| .Times(1); |
| ProcessPacket(client_address, connection_id, false, SerializeCHLO()); |
| } |
| |
| TEST_F(QuicDispatcherTest, ProcessPacketWithZeroPort) { |
| CreateTimeWaitListManager(); |
| |
| QuicSocketAddress client_address(QuicIpAddress::Loopback4(), 0); |
| server_address_ = QuicSocketAddress(QuicIpAddress::Any4(), 5); |
| |
| // dispatcher_ should drop this packet. |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(1, client_address)).Times(0); |
| EXPECT_CALL(*time_wait_list_manager_, ProcessPacket(_, _, _, _, _)).Times(0); |
| EXPECT_CALL(*time_wait_list_manager_, AddConnectionIdToTimeWait(_, _, _, _)) |
| .Times(0); |
| ProcessPacket(client_address, 1, true, SerializeCHLO()); |
| } |
| |
| TEST_F(QuicDispatcherTest, OKSeqNoPacketProcessed) { |
| QuicSocketAddress client_address(QuicIpAddress::Loopback4(), 1); |
| QuicConnectionId connection_id = 1; |
| server_address_ = QuicSocketAddress(QuicIpAddress::Any4(), 5); |
| |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(1, client_address)) |
| .WillOnce(testing::Return(CreateSession( |
| dispatcher_.get(), config_, 1, client_address, &mock_helper_, |
| &mock_alarm_factory_, &crypto_config_, |
| QuicDispatcherPeer::GetCache(dispatcher_.get()), &session1_))); |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillOnce(testing::WithArgs<2>(Invoke(CreateFunctor( |
| &QuicDispatcherTest::ValidatePacket, base::Unretained(this), 1)))); |
| // A packet whose packet number is the largest that is allowed to start a |
| // connection. |
| ProcessPacket(client_address, connection_id, true, SerializeCHLO(), |
| PACKET_8BYTE_CONNECTION_ID, PACKET_6BYTE_PACKET_NUMBER, |
| QuicDispatcher::kMaxReasonableInitialPacketNumber); |
| EXPECT_EQ(client_address, dispatcher_->current_client_address()); |
| EXPECT_EQ(server_address_, dispatcher_->current_server_address()); |
| } |
| |
| TEST_F(QuicDispatcherTest, TooBigSeqNoPacketToTimeWaitListManager) { |
| CreateTimeWaitListManager(); |
| |
| QuicSocketAddress client_address(QuicIpAddress::Loopback4(), 1); |
| QuicConnectionId connection_id = 1; |
| // Dispatcher forwards this packet for this connection_id to the time wait |
| // list manager. |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(_, _)).Times(0); |
| EXPECT_CALL(*time_wait_list_manager_, |
| ProcessPacket(_, _, connection_id, _, _)) |
| .Times(1); |
| EXPECT_CALL(*time_wait_list_manager_, AddConnectionIdToTimeWait(_, _, _, _)) |
| .Times(1); |
| // A packet whose packet number is one to large to be allowed to start a |
| // connection. |
| ProcessPacket(client_address, connection_id, true, SerializeCHLO(), |
| PACKET_8BYTE_CONNECTION_ID, PACKET_6BYTE_PACKET_NUMBER, |
| QuicDispatcher::kMaxReasonableInitialPacketNumber + 1); |
| } |
| |
| TEST_F(QuicDispatcherTest, SupportedVersionsChangeInFlight) { |
| static_assert(arraysize(kSupportedQuicVersions) == 5u, |
| "Supported versions out of sync"); |
| FLAGS_quic_reloadable_flag_quic_disable_version_34 = false; |
| FLAGS_quic_reloadable_flag_quic_enable_version_36_v3 = true; |
| FLAGS_quic_reloadable_flag_quic_enable_version_37 = true; |
| FLAGS_quic_enable_version_38 = true; |
| QuicSocketAddress client_address(QuicIpAddress::Loopback4(), 1); |
| server_address_ = QuicSocketAddress(QuicIpAddress::Any4(), 5); |
| QuicConnectionId connection_id = 1; |
| |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(connection_id, client_address)) |
| .Times(0); |
| ProcessPacket(client_address, connection_id, true, |
| static_cast<QuicVersion>(QuicVersionMin() - 1), SerializeCHLO(), |
| PACKET_8BYTE_CONNECTION_ID, PACKET_6BYTE_PACKET_NUMBER, 1); |
| ++connection_id; |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(connection_id, client_address)) |
| .WillOnce(testing::Return(CreateSession( |
| dispatcher_.get(), config_, connection_id, client_address, |
| &mock_helper_, &mock_alarm_factory_, &crypto_config_, |
| QuicDispatcherPeer::GetCache(dispatcher_.get()), &session1_))); |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillOnce(testing::WithArgs<2>( |
| Invoke(CreateFunctor(&QuicDispatcherTest::ValidatePacket, |
| base::Unretained(this), connection_id)))); |
| ProcessPacket(client_address, connection_id, true, QuicVersionMin(), |
| SerializeCHLO(), PACKET_8BYTE_CONNECTION_ID, |
| PACKET_6BYTE_PACKET_NUMBER, 1); |
| ++connection_id; |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(connection_id, client_address)) |
| .WillOnce(testing::Return(CreateSession( |
| dispatcher_.get(), config_, connection_id, client_address, |
| &mock_helper_, &mock_alarm_factory_, &crypto_config_, |
| QuicDispatcherPeer::GetCache(dispatcher_.get()), &session1_))); |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillOnce(testing::WithArgs<2>( |
| Invoke(CreateFunctor(&QuicDispatcherTest::ValidatePacket, |
| base::Unretained(this), connection_id)))); |
| ProcessPacket(client_address, connection_id, true, QuicVersionMax(), |
| SerializeCHLO(), PACKET_8BYTE_CONNECTION_ID, |
| PACKET_6BYTE_PACKET_NUMBER, 1); |
| // Turn off version 36. |
| FLAGS_quic_reloadable_flag_quic_enable_version_36_v3 = false; |
| ++connection_id; |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(connection_id, client_address)) |
| .Times(0); |
| ProcessPacket(client_address, connection_id, true, QUIC_VERSION_36, |
| SerializeCHLO(), PACKET_8BYTE_CONNECTION_ID, |
| PACKET_6BYTE_PACKET_NUMBER, 1); |
| |
| // Turn on version 36. |
| FLAGS_quic_reloadable_flag_quic_enable_version_36_v3 = true; |
| ++connection_id; |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(connection_id, client_address)) |
| .WillOnce(testing::Return(CreateSession( |
| dispatcher_.get(), config_, connection_id, client_address, |
| &mock_helper_, &mock_alarm_factory_, &crypto_config_, |
| QuicDispatcherPeer::GetCache(dispatcher_.get()), &session1_))); |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillOnce(testing::WithArgs<2>( |
| Invoke(CreateFunctor(&QuicDispatcherTest::ValidatePacket, |
| base::Unretained(this), connection_id)))); |
| ProcessPacket(client_address, connection_id, true, QUIC_VERSION_35, |
| SerializeCHLO(), PACKET_8BYTE_CONNECTION_ID, |
| PACKET_6BYTE_PACKET_NUMBER, 1); |
| |
| // Turn off version 34. |
| FLAGS_quic_reloadable_flag_quic_disable_version_34 = true; |
| ++connection_id; |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(connection_id, client_address)) |
| .Times(0); |
| ProcessPacket(client_address, connection_id, true, QUIC_VERSION_34, |
| SerializeCHLO(), PACKET_8BYTE_CONNECTION_ID, |
| PACKET_6BYTE_PACKET_NUMBER, 1); |
| |
| // Turn on version 34. |
| FLAGS_quic_reloadable_flag_quic_disable_version_34 = false; |
| ++connection_id; |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(connection_id, client_address)) |
| .WillOnce(testing::Return(CreateSession( |
| dispatcher_.get(), config_, connection_id, client_address, |
| &mock_helper_, &mock_alarm_factory_, &crypto_config_, |
| QuicDispatcherPeer::GetCache(dispatcher_.get()), &session1_))); |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillOnce(testing::WithArgs<2>( |
| Invoke(CreateFunctor(&QuicDispatcherTest::ValidatePacket, |
| base::Unretained(this), connection_id)))); |
| ProcessPacket(client_address, connection_id, true, QUIC_VERSION_34, |
| SerializeCHLO(), PACKET_8BYTE_CONNECTION_ID, |
| PACKET_6BYTE_PACKET_NUMBER, 1); |
| } |
| |
| // Enables mocking of the handshake-confirmation for stateless rejects. |
| class MockQuicCryptoServerStream : public QuicCryptoServerStream { |
| public: |
| MockQuicCryptoServerStream(const QuicCryptoServerConfig& crypto_config, |
| QuicCompressedCertsCache* compressed_certs_cache, |
| QuicServerSessionBase* session, |
| QuicCryptoServerStream::Helper* helper) |
| : QuicCryptoServerStream( |
| &crypto_config, |
| compressed_certs_cache, |
| FLAGS_quic_reloadable_flag_enable_quic_stateless_reject_support, |
| session, |
| helper) {} |
| void set_handshake_confirmed_for_testing(bool handshake_confirmed) { |
| handshake_confirmed_ = handshake_confirmed; |
| } |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(MockQuicCryptoServerStream); |
| }; |
| |
| struct StatelessRejectTestParams { |
| StatelessRejectTestParams(bool enable_stateless_rejects_via_flag, |
| bool client_supports_statelesss_rejects, |
| bool crypto_handshake_successful) |
| : enable_stateless_rejects_via_flag(enable_stateless_rejects_via_flag), |
| client_supports_statelesss_rejects(client_supports_statelesss_rejects), |
| crypto_handshake_successful(crypto_handshake_successful) {} |
| |
| friend std::ostream& operator<<(std::ostream& os, |
| const StatelessRejectTestParams& p) { |
| os << "{ enable_stateless_rejects_via_flag: " |
| << p.enable_stateless_rejects_via_flag << std::endl; |
| os << " client_supports_statelesss_rejects: " |
| << p.client_supports_statelesss_rejects << std::endl; |
| os << " crypto_handshake_successful: " << p.crypto_handshake_successful |
| << " }"; |
| return os; |
| } |
| |
| // This only enables the stateless reject feature via the feature-flag. |
| // This should be a no-op if the peer does not support them. |
| bool enable_stateless_rejects_via_flag; |
| // Whether or not the client supports stateless rejects. |
| bool client_supports_statelesss_rejects; |
| // Should the initial crypto handshake succeed or not. |
| bool crypto_handshake_successful; |
| }; |
| |
| // Constructs various test permutations for stateless rejects. |
| std::vector<StatelessRejectTestParams> GetStatelessRejectTestParams() { |
| std::vector<StatelessRejectTestParams> params; |
| for (bool enable_stateless_rejects_via_flag : {true, false}) { |
| for (bool client_supports_statelesss_rejects : {true, false}) { |
| for (bool crypto_handshake_successful : {true, false}) { |
| params.push_back(StatelessRejectTestParams( |
| enable_stateless_rejects_via_flag, |
| client_supports_statelesss_rejects, crypto_handshake_successful)); |
| } |
| } |
| } |
| return params; |
| } |
| |
| class QuicDispatcherStatelessRejectTest |
| : public QuicDispatcherTest, |
| public ::testing::WithParamInterface<StatelessRejectTestParams> { |
| public: |
| QuicDispatcherStatelessRejectTest() |
| : QuicDispatcherTest(), crypto_stream1_(nullptr) {} |
| |
| ~QuicDispatcherStatelessRejectTest() override { |
| if (crypto_stream1_) { |
| delete crypto_stream1_; |
| } |
| } |
| |
| // This test setup assumes that all testing will be done using |
| // crypto_stream1_. |
| void SetUp() override { |
| QuicDispatcherTest::SetUp(); |
| FLAGS_quic_reloadable_flag_enable_quic_stateless_reject_support = |
| GetParam().enable_stateless_rejects_via_flag; |
| } |
| |
| // Returns true or false, depending on whether the server will emit |
| // a stateless reject, depending upon the parameters of the test. |
| bool ExpectStatelessReject() { |
| return GetParam().enable_stateless_rejects_via_flag && |
| !GetParam().crypto_handshake_successful && |
| GetParam().client_supports_statelesss_rejects; |
| } |
| |
| // Sets up dispatcher_, session1_, and crypto_stream1_ based on |
| // the test parameters. |
| QuicServerSessionBase* CreateSessionBasedOnTestParams( |
| QuicConnectionId connection_id, |
| const QuicSocketAddress& client_address) { |
| CreateSession(dispatcher_.get(), config_, connection_id, client_address, |
| &mock_helper_, &mock_alarm_factory_, &crypto_config_, |
| QuicDispatcherPeer::GetCache(dispatcher_.get()), &session1_); |
| |
| crypto_stream1_ = new MockQuicCryptoServerStream( |
| crypto_config_, QuicDispatcherPeer::GetCache(dispatcher_.get()), |
| session1_, session1_->stream_helper()); |
| session1_->SetCryptoStream(crypto_stream1_); |
| crypto_stream1_->set_handshake_confirmed_for_testing( |
| GetParam().crypto_handshake_successful); |
| crypto_stream1_->SetPeerSupportsStatelessRejects( |
| GetParam().client_supports_statelesss_rejects); |
| return session1_; |
| } |
| |
| MockQuicCryptoServerStream* crypto_stream1_; |
| }; |
| |
| // Parameterized test for stateless rejects. Should test all |
| // combinations of enabling/disabling, reject/no-reject for stateless |
| // rejects. |
| INSTANTIATE_TEST_CASE_P(QuicDispatcherStatelessRejectTests, |
| QuicDispatcherStatelessRejectTest, |
| ::testing::ValuesIn(GetStatelessRejectTestParams())); |
| |
| TEST_P(QuicDispatcherStatelessRejectTest, ParameterizedBasicTest) { |
| CreateTimeWaitListManager(); |
| |
| QuicSocketAddress client_address(QuicIpAddress::Loopback4(), 1); |
| QuicConnectionId connection_id = 1; |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(connection_id, client_address)) |
| .WillOnce(testing::Return( |
| CreateSessionBasedOnTestParams(connection_id, client_address))); |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillOnce(testing::WithArgs<2>( |
| Invoke(CreateFunctor(&QuicDispatcherTest::ValidatePacket, |
| base::Unretained(this), connection_id)))); |
| // Process the first packet for the connection. |
| ProcessPacket(client_address, connection_id, true, SerializeCHLO()); |
| if (ExpectStatelessReject()) { |
| // If this is a stateless reject, the crypto stream will close the |
| // connection. |
| session1_->connection()->CloseConnection( |
| QUIC_CRYPTO_HANDSHAKE_STATELESS_REJECT, "stateless reject", |
| ConnectionCloseBehavior::SILENT_CLOSE); |
| } |
| |
| // Send a second packet and check the results. If this is a stateless reject, |
| // the existing connection_id will go on the time-wait list. |
| EXPECT_EQ(ExpectStatelessReject(), |
| time_wait_list_manager_->IsConnectionIdInTimeWait(connection_id)); |
| if (ExpectStatelessReject()) { |
| // The second packet will be processed on the time-wait list. |
| EXPECT_CALL(*time_wait_list_manager_, |
| ProcessPacket(_, _, connection_id, _, _)) |
| .Times(1); |
| } else { |
| // The second packet will trigger a packet-validation |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .Times(1) |
| .WillOnce(testing::WithArgs<2>( |
| Invoke(CreateFunctor(&QuicDispatcherTest::ValidatePacket, |
| base::Unretained(this), connection_id)))); |
| } |
| ProcessPacket(client_address, connection_id, true, "data"); |
| } |
| |
| TEST_P(QuicDispatcherStatelessRejectTest, CheapRejects) { |
| FLAGS_quic_reloadable_flag_quic_use_cheap_stateless_rejects = true; |
| CreateTimeWaitListManager(); |
| |
| QuicSocketAddress client_address(QuicIpAddress::Loopback4(), 1); |
| QuicConnectionId connection_id = 1; |
| if (GetParam().enable_stateless_rejects_via_flag) { |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(connection_id, client_address)) |
| .Times(0); |
| } else { |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(connection_id, client_address)) |
| .WillOnce(testing::Return( |
| CreateSessionBasedOnTestParams(connection_id, client_address))); |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillOnce(testing::WithArgs<2>(Invoke(CreateFunctor( |
| &QuicDispatcherTest::ValidatePacket, base::Unretained(this), 1)))); |
| } |
| |
| QUIC_LOG(INFO) << "ExpectStatelessReject: " << ExpectStatelessReject(); |
| QUIC_LOG(INFO) << "Params: " << GetParam(); |
| // Process the first packet for the connection. |
| CryptoHandshakeMessage client_hello = |
| crypto_test_utils::CreateCHLO({{"AEAD", "AESG"}, |
| {"KEXS", "C255"}, |
| {"COPT", "SREJ"}, |
| {"NONC", "1234567890123456789012"}, |
| {"VER\0", "Q025"}}, |
| kClientHelloMinimumSize); |
| |
| ProcessPacket(client_address, connection_id, true, |
| client_hello.GetSerialized().AsStringPiece().as_string()); |
| |
| if (GetParam().enable_stateless_rejects_via_flag) { |
| EXPECT_EQ(true, |
| time_wait_list_manager_->IsConnectionIdInTimeWait(connection_id)); |
| } |
| } |
| |
| TEST_P(QuicDispatcherStatelessRejectTest, BufferNonChlo) { |
| FLAGS_quic_reloadable_flag_quic_use_cheap_stateless_rejects = true; |
| CreateTimeWaitListManager(); |
| |
| const QuicSocketAddress client_address(QuicIpAddress::Loopback4(), 1); |
| const QuicConnectionId connection_id = 1; |
| |
| ProcessPacket(client_address, connection_id, true, "NOT DATA FOR A CHLO"); |
| |
| // Process the first packet for the connection. |
| CryptoHandshakeMessage client_hello = |
| crypto_test_utils::CreateCHLO({{"AEAD", "AESG"}, |
| {"KEXS", "C255"}, |
| {"NONC", "1234567890123456789012"}, |
| {"VER\0", "Q025"}}, |
| kClientHelloMinimumSize); |
| |
| // If stateless rejects are enabled then a connection will be created now |
| // and the buffered packet will be processed |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(connection_id, client_address)) |
| .WillOnce(testing::Return( |
| CreateSessionBasedOnTestParams(connection_id, client_address))); |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, client_address, _)) |
| .WillOnce(testing::WithArg<2>( |
| Invoke(CreateFunctor(&QuicDispatcherTest::ValidatePacket, |
| base::Unretained(this), connection_id)))); |
| // Expect both packets to be passed to ProcessUdpPacket(). And one of them |
| // is already expected in CreateSessionBasedOnTestParams(). |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, client_address, _)) |
| .WillOnce(testing::WithArg<2>( |
| Invoke(CreateFunctor(&QuicDispatcherTest::ValidatePacket, |
| base::Unretained(this), connection_id)))) |
| .RetiresOnSaturation(); |
| ProcessPacket(client_address, connection_id, true, |
| client_hello.GetSerialized().AsStringPiece().as_string()); |
| EXPECT_FALSE( |
| time_wait_list_manager_->IsConnectionIdInTimeWait(connection_id)); |
| } |
| |
| // Verify the stopgap test: Packets with truncated connection IDs should be |
| // dropped. |
| class QuicDispatcherTestStrayPacketConnectionId : public QuicDispatcherTest {}; |
| |
| // Packets with truncated connection IDs should be dropped. |
| TEST_F(QuicDispatcherTestStrayPacketConnectionId, |
| StrayPacketTruncatedConnectionId) { |
| CreateTimeWaitListManager(); |
| |
| QuicSocketAddress client_address(QuicIpAddress::Loopback4(), 1); |
| QuicConnectionId connection_id = 1; |
| // Dispatcher drops this packet. |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(_, _)).Times(0); |
| EXPECT_CALL(*time_wait_list_manager_, |
| ProcessPacket(_, _, connection_id, _, _)) |
| .Times(0); |
| EXPECT_CALL(*time_wait_list_manager_, AddConnectionIdToTimeWait(_, _, _, _)) |
| .Times(0); |
| ProcessPacket(client_address, connection_id, true, "data", |
| PACKET_0BYTE_CONNECTION_ID, PACKET_6BYTE_PACKET_NUMBER); |
| } |
| |
| class BlockingWriter : public QuicPacketWriterWrapper { |
| public: |
| BlockingWriter() : write_blocked_(false) {} |
| |
| bool IsWriteBlocked() const override { return write_blocked_; } |
| void SetWritable() override { write_blocked_ = false; } |
| |
| WriteResult WritePacket(const char* buffer, |
| size_t buf_len, |
| const QuicIpAddress& self_client_address, |
| const QuicSocketAddress& peer_client_address, |
| PerPacketOptions* options) override { |
| // It would be quite possible to actually implement this method here with |
| // the fake blocked status, but it would be significantly more work in |
| // Chromium, and since it's not called anyway, don't bother. |
| QUIC_LOG(DFATAL) << "Not supported"; |
| return WriteResult(); |
| } |
| |
| bool write_blocked_; |
| }; |
| |
| class QuicDispatcherWriteBlockedListTest : public QuicDispatcherTest { |
| public: |
| void SetUp() override { |
| QuicDispatcherTest::SetUp(); |
| writer_ = new BlockingWriter; |
| QuicDispatcherPeer::UseWriter(dispatcher_.get(), writer_); |
| |
| QuicSocketAddress client_address(QuicIpAddress::Loopback4(), 1); |
| |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(_, client_address)) |
| .WillOnce(testing::Return(CreateSession( |
| dispatcher_.get(), config_, 1, client_address, &helper_, |
| &alarm_factory_, &crypto_config_, |
| QuicDispatcherPeer::GetCache(dispatcher_.get()), &session1_))); |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillOnce(testing::WithArgs<2>(Invoke(CreateFunctor( |
| &QuicDispatcherTest::ValidatePacket, base::Unretained(this), 1)))); |
| ProcessPacket(client_address, 1, true, SerializeCHLO()); |
| |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(_, client_address)) |
| .WillOnce(testing::Return(CreateSession( |
| dispatcher_.get(), config_, 2, client_address, &helper_, |
| &alarm_factory_, &crypto_config_, |
| QuicDispatcherPeer::GetCache(dispatcher_.get()), &session2_))); |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>(session2_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillOnce(testing::WithArgs<2>(Invoke(CreateFunctor( |
| &QuicDispatcherTest::ValidatePacket, base::Unretained(this), 2)))); |
| ProcessPacket(client_address, 2, true, SerializeCHLO()); |
| |
| blocked_list_ = QuicDispatcherPeer::GetWriteBlockedList(dispatcher_.get()); |
| } |
| |
| void TearDown() override { |
| EXPECT_CALL(*connection1(), CloseConnection(QUIC_PEER_GOING_AWAY, _, _)); |
| EXPECT_CALL(*connection2(), CloseConnection(QUIC_PEER_GOING_AWAY, _, _)); |
| dispatcher_->Shutdown(); |
| } |
| |
| void SetBlocked() { writer_->write_blocked_ = true; } |
| |
| void BlockConnection2() { |
| writer_->write_blocked_ = true; |
| dispatcher_->OnWriteBlocked(connection2()); |
| } |
| |
| protected: |
| MockQuicConnectionHelper helper_; |
| MockAlarmFactory alarm_factory_; |
| BlockingWriter* writer_; |
| QuicDispatcher::WriteBlockedList* blocked_list_; |
| }; |
| |
| TEST_F(QuicDispatcherWriteBlockedListTest, BasicOnCanWrite) { |
| // No OnCanWrite calls because no connections are blocked. |
| dispatcher_->OnCanWrite(); |
| |
| // Register connection 1 for events, and make sure it's notified. |
| SetBlocked(); |
| dispatcher_->OnWriteBlocked(connection1()); |
| EXPECT_CALL(*connection1(), OnCanWrite()); |
| dispatcher_->OnCanWrite(); |
| |
| // It should get only one notification. |
| EXPECT_CALL(*connection1(), OnCanWrite()).Times(0); |
| dispatcher_->OnCanWrite(); |
| EXPECT_FALSE(dispatcher_->HasPendingWrites()); |
| } |
| |
| TEST_F(QuicDispatcherWriteBlockedListTest, OnCanWriteOrder) { |
| // Make sure we handle events in order. |
| InSequence s; |
| SetBlocked(); |
| dispatcher_->OnWriteBlocked(connection1()); |
| dispatcher_->OnWriteBlocked(connection2()); |
| EXPECT_CALL(*connection1(), OnCanWrite()); |
| EXPECT_CALL(*connection2(), OnCanWrite()); |
| dispatcher_->OnCanWrite(); |
| |
| // Check the other ordering. |
| SetBlocked(); |
| dispatcher_->OnWriteBlocked(connection2()); |
| dispatcher_->OnWriteBlocked(connection1()); |
| EXPECT_CALL(*connection2(), OnCanWrite()); |
| EXPECT_CALL(*connection1(), OnCanWrite()); |
| dispatcher_->OnCanWrite(); |
| } |
| |
| TEST_F(QuicDispatcherWriteBlockedListTest, OnCanWriteRemove) { |
| // Add and remove one connction. |
| SetBlocked(); |
| dispatcher_->OnWriteBlocked(connection1()); |
| blocked_list_->erase(connection1()); |
| EXPECT_CALL(*connection1(), OnCanWrite()).Times(0); |
| dispatcher_->OnCanWrite(); |
| |
| // Add and remove one connction and make sure it doesn't affect others. |
| SetBlocked(); |
| dispatcher_->OnWriteBlocked(connection1()); |
| dispatcher_->OnWriteBlocked(connection2()); |
| blocked_list_->erase(connection1()); |
| EXPECT_CALL(*connection2(), OnCanWrite()); |
| dispatcher_->OnCanWrite(); |
| |
| // Add it, remove it, and add it back and make sure things are OK. |
| SetBlocked(); |
| dispatcher_->OnWriteBlocked(connection1()); |
| blocked_list_->erase(connection1()); |
| dispatcher_->OnWriteBlocked(connection1()); |
| EXPECT_CALL(*connection1(), OnCanWrite()).Times(1); |
| dispatcher_->OnCanWrite(); |
| } |
| |
| TEST_F(QuicDispatcherWriteBlockedListTest, DoubleAdd) { |
| // Make sure a double add does not necessitate a double remove. |
| SetBlocked(); |
| dispatcher_->OnWriteBlocked(connection1()); |
| dispatcher_->OnWriteBlocked(connection1()); |
| blocked_list_->erase(connection1()); |
| EXPECT_CALL(*connection1(), OnCanWrite()).Times(0); |
| dispatcher_->OnCanWrite(); |
| |
| // Make sure a double add does not result in two OnCanWrite calls. |
| SetBlocked(); |
| dispatcher_->OnWriteBlocked(connection1()); |
| dispatcher_->OnWriteBlocked(connection1()); |
| EXPECT_CALL(*connection1(), OnCanWrite()).Times(1); |
| dispatcher_->OnCanWrite(); |
| } |
| |
| TEST_F(QuicDispatcherWriteBlockedListTest, OnCanWriteHandleBlock) { |
| // Finally make sure if we write block on a write call, we stop calling. |
| InSequence s; |
| SetBlocked(); |
| dispatcher_->OnWriteBlocked(connection1()); |
| dispatcher_->OnWriteBlocked(connection2()); |
| EXPECT_CALL(*connection1(), OnCanWrite()) |
| .WillOnce(Invoke(this, &QuicDispatcherWriteBlockedListTest::SetBlocked)); |
| EXPECT_CALL(*connection2(), OnCanWrite()).Times(0); |
| dispatcher_->OnCanWrite(); |
| |
| // And we'll resume where we left off when we get another call. |
| EXPECT_CALL(*connection2(), OnCanWrite()); |
| dispatcher_->OnCanWrite(); |
| } |
| |
| TEST_F(QuicDispatcherWriteBlockedListTest, LimitedWrites) { |
| // Make sure we call both writers. The first will register for more writing |
| // but should not be immediately called due to limits. |
| InSequence s; |
| SetBlocked(); |
| dispatcher_->OnWriteBlocked(connection1()); |
| dispatcher_->OnWriteBlocked(connection2()); |
| EXPECT_CALL(*connection1(), OnCanWrite()); |
| EXPECT_CALL(*connection2(), OnCanWrite()) |
| .WillOnce( |
| Invoke(this, &QuicDispatcherWriteBlockedListTest::BlockConnection2)); |
| dispatcher_->OnCanWrite(); |
| EXPECT_TRUE(dispatcher_->HasPendingWrites()); |
| |
| // Now call OnCanWrite again, and connection1 should get its second chance |
| EXPECT_CALL(*connection2(), OnCanWrite()); |
| dispatcher_->OnCanWrite(); |
| EXPECT_FALSE(dispatcher_->HasPendingWrites()); |
| } |
| |
| TEST_F(QuicDispatcherWriteBlockedListTest, TestWriteLimits) { |
| // Finally make sure if we write block on a write call, we stop calling. |
| InSequence s; |
| SetBlocked(); |
| dispatcher_->OnWriteBlocked(connection1()); |
| dispatcher_->OnWriteBlocked(connection2()); |
| EXPECT_CALL(*connection1(), OnCanWrite()) |
| .WillOnce(Invoke(this, &QuicDispatcherWriteBlockedListTest::SetBlocked)); |
| EXPECT_CALL(*connection2(), OnCanWrite()).Times(0); |
| dispatcher_->OnCanWrite(); |
| EXPECT_TRUE(dispatcher_->HasPendingWrites()); |
| |
| // And we'll resume where we left off when we get another call. |
| EXPECT_CALL(*connection2(), OnCanWrite()); |
| dispatcher_->OnCanWrite(); |
| EXPECT_FALSE(dispatcher_->HasPendingWrites()); |
| } |
| |
| // Tests that bufferring packets works in stateful reject, expensive stateless |
| // reject and cheap stateless reject. |
| struct BufferedPacketStoreTestParams { |
| BufferedPacketStoreTestParams(bool enable_stateless_rejects_via_flag, |
| bool support_cheap_stateless_reject) |
| : enable_stateless_rejects_via_flag(enable_stateless_rejects_via_flag), |
| support_cheap_stateless_reject(support_cheap_stateless_reject) {} |
| |
| friend std::ostream& operator<<(std::ostream& os, |
| const BufferedPacketStoreTestParams& p) { |
| os << "{ enable_stateless_rejects_via_flag: " |
| << p.enable_stateless_rejects_via_flag << std::endl; |
| os << " support_cheap_stateless_reject: " |
| << p.support_cheap_stateless_reject << " }"; |
| return os; |
| } |
| |
| // This only enables the stateless reject feature via the feature-flag. |
| // This should be a no-op if the peer does not support them. |
| bool enable_stateless_rejects_via_flag; |
| // Whether to do cheap stateless or not. |
| bool support_cheap_stateless_reject; |
| }; |
| |
| std::vector<BufferedPacketStoreTestParams> GetBufferedPacketStoreTestParams() { |
| std::vector<BufferedPacketStoreTestParams> params; |
| for (bool enable_stateless_rejects_via_flag : {true, false}) { |
| for (bool support_cheap_stateless_reject : {true, false}) { |
| params.push_back(BufferedPacketStoreTestParams( |
| enable_stateless_rejects_via_flag, support_cheap_stateless_reject)); |
| } |
| } |
| return params; |
| } |
| |
| // A dispatcher whose stateless rejector will always ACCEPTs CHLO. |
| class BufferedPacketStoreTest |
| : public QuicDispatcherTest, |
| public ::testing::WithParamInterface<BufferedPacketStoreTestParams> { |
| public: |
| BufferedPacketStoreTest() |
| : QuicDispatcherTest(), |
| client_addr_(QuicIpAddress::Loopback4(), 1234), |
| signed_config_(new QuicSignedServerConfig) { |
| FLAGS_quic_reloadable_flag_quic_use_cheap_stateless_rejects = |
| GetParam().support_cheap_stateless_reject; |
| FLAGS_quic_reloadable_flag_enable_quic_stateless_reject_support = |
| GetParam().enable_stateless_rejects_via_flag; |
| } |
| |
| void SetUp() override { |
| QuicDispatcherTest::SetUp(); |
| clock_ = QuicDispatcherPeer::GetHelper(dispatcher_.get())->GetClock(); |
| |
| QuicVersion version = AllSupportedVersions().front(); |
| CryptoHandshakeMessage chlo = |
| crypto_test_utils::GenerateDefaultInchoateCHLO(clock_, version, |
| &crypto_config_); |
| chlo.SetVector(net::kCOPT, net::QuicTagVector{net::kSREJ}); |
| // Pass an inchoate CHLO. |
| crypto_test_utils::GenerateFullCHLO( |
| chlo, &crypto_config_, server_addr_, client_addr_, version, clock_, |
| signed_config_, QuicDispatcherPeer::GetCache(dispatcher_.get()), |
| &full_chlo_); |
| } |
| |
| string SerializeFullCHLO() { |
| return full_chlo_.GetSerialized().AsStringPiece().as_string(); |
| } |
| |
| protected: |
| QuicSocketAddress server_addr_; |
| QuicSocketAddress client_addr_; |
| QuicReferenceCountedPointer<QuicSignedServerConfig> signed_config_; |
| const QuicClock* clock_; |
| CryptoHandshakeMessage full_chlo_; |
| }; |
| |
| INSTANTIATE_TEST_CASE_P( |
| BufferedPacketStoreTests, |
| BufferedPacketStoreTest, |
| ::testing::ValuesIn(GetBufferedPacketStoreTestParams())); |
| |
| TEST_P(BufferedPacketStoreTest, ProcessNonChloPacketsUptoLimitAndProcessChlo) { |
| InSequence s; |
| QuicSocketAddress client_address(QuicIpAddress::Loopback4(), 1); |
| server_address_ = QuicSocketAddress(QuicIpAddress::Any4(), 5); |
| QuicConnectionId conn_id = 1; |
| // A bunch of non-CHLO should be buffered upon arrival, and the first one |
| // should trigger ShouldCreateOrBufferPacketForConnection(). |
| EXPECT_CALL(*dispatcher_, ShouldCreateOrBufferPacketForConnection(conn_id)) |
| .Times(1); |
| for (size_t i = 1; i <= kDefaultMaxUndecryptablePackets + 1; ++i) { |
| ProcessPacket(client_address, conn_id, true, |
| QuicStrCat("data packet ", i + 1), PACKET_8BYTE_CONNECTION_ID, |
| PACKET_6BYTE_PACKET_NUMBER, /*packet_number=*/i + 1); |
| } |
| EXPECT_EQ(0u, dispatcher_->session_map().size()) |
| << "No session should be created before CHLO arrives."; |
| |
| // Pop out the last packet as it is also be dropped by the store. |
| data_connection_map_[conn_id].pop_back(); |
| // When CHLO arrives, a new session should be created, and all packets |
| // buffered should be delivered to the session. |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(conn_id, client_address)) |
| .WillOnce(testing::Return(CreateSession( |
| dispatcher_.get(), config_, conn_id, client_address, &mock_helper_, |
| &mock_alarm_factory_, &crypto_config_, |
| QuicDispatcherPeer::GetCache(dispatcher_.get()), &session1_))); |
| |
| // Only |kDefaultMaxUndecryptablePackets| packets were buffered, and they |
| // should be delivered in arrival order. |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .Times(kDefaultMaxUndecryptablePackets + 1) // + 1 for CHLO. |
| .WillRepeatedly(testing::WithArg<2>( |
| Invoke(CreateFunctor(&QuicDispatcherTest::ValidatePacket, |
| base::Unretained(this), conn_id)))); |
| ProcessPacket(client_address, conn_id, true, SerializeFullCHLO()); |
| } |
| |
| TEST_P(BufferedPacketStoreTest, |
| ProcessNonChloPacketsForDifferentConnectionsUptoLimit) { |
| InSequence s; |
| server_address_ = QuicSocketAddress(QuicIpAddress::Any4(), 5); |
| // A bunch of non-CHLO should be buffered upon arrival. |
| size_t kNumConnections = |
| (FLAGS_quic_reloadable_flag_quic_limit_num_new_sessions_per_epoll_loop |
| ? kMaxConnectionsWithoutCHLO |
| : kDefaultMaxConnectionsInStore) + |
| 1; |
| for (size_t i = 1; i <= kNumConnections; ++i) { |
| QuicSocketAddress client_address(QuicIpAddress::Loopback4(), i); |
| QuicConnectionId conn_id = i; |
| if (FLAGS_quic_reloadable_flag_quic_create_session_after_insertion) { |
| EXPECT_CALL(*dispatcher_, |
| ShouldCreateOrBufferPacketForConnection(conn_id)); |
| } else { |
| if (i <= kNumConnections - 1) { |
| // As they are on different connection, they should trigger |
| // ShouldCreateOrBufferPacketForConnection(). The last packet should be |
| // dropped. |
| EXPECT_CALL(*dispatcher_, |
| ShouldCreateOrBufferPacketForConnection(conn_id)); |
| } |
| } |
| ProcessPacket(client_address, conn_id, true, |
| QuicStrCat("data packet on connection ", i), |
| PACKET_8BYTE_CONNECTION_ID, PACKET_6BYTE_PACKET_NUMBER, |
| /*packet_number=*/2); |
| } |
| |
| // Pop out the packet on last connection as it shouldn't be enqueued in store |
| // as well. |
| data_connection_map_[kNumConnections].pop_front(); |
| |
| // Reset session creation counter to ensure processing CHLO can always |
| // create session. |
| QuicDispatcherPeer::set_new_sessions_allowed_per_event_loop(dispatcher_.get(), |
| kNumConnections); |
| // Process CHLOs to create session for these connections. |
| for (size_t i = 1; i <= kNumConnections; ++i) { |
| QuicSocketAddress client_address(QuicIpAddress::Loopback4(), i); |
| QuicConnectionId conn_id = i; |
| if (FLAGS_quic_reloadable_flag_quic_create_session_after_insertion && |
| conn_id == kNumConnections) { |
| // The last CHLO should trigger ShouldCreateOrBufferPacketForConnection() |
| // since it's the |
| // first packet arrives on that connection. |
| EXPECT_CALL(*dispatcher_, |
| ShouldCreateOrBufferPacketForConnection(conn_id)); |
| } |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(conn_id, client_address)) |
| .WillOnce(testing::Return(CreateSession( |
| dispatcher_.get(), config_, conn_id, client_address, &mock_helper_, |
| &mock_alarm_factory_, &crypto_config_, |
| QuicDispatcherPeer::GetCache(dispatcher_.get()), &session1_))); |
| if (!FLAGS_quic_reloadable_flag_quic_create_session_after_insertion && |
| conn_id == kNumConnections) { |
| // The last CHLO should trigger ShouldCreateOrBufferPacketForConnection() |
| // since it's the first packet arrives on that connection. |
| EXPECT_CALL(*dispatcher_, |
| ShouldCreateOrBufferPacketForConnection(conn_id)); |
| } |
| // First |kNumConnections| - 1 connections should have buffered |
| // a packet in store. The rest should have been dropped. |
| size_t upper_limit = |
| FLAGS_quic_reloadable_flag_quic_limit_num_new_sessions_per_epoll_loop |
| ? kMaxConnectionsWithoutCHLO |
| : kDefaultMaxConnectionsInStore; |
| size_t num_packet_to_process = i <= upper_limit ? 2u : 1u; |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, client_address, _)) |
| .Times(num_packet_to_process) |
| .WillRepeatedly(testing::WithArg<2>( |
| Invoke(CreateFunctor(&QuicDispatcherTest::ValidatePacket, |
| base::Unretained(this), conn_id)))); |
| ProcessPacket(client_address, conn_id, true, SerializeFullCHLO()); |
| } |
| } |
| |
| // Tests that store delivers empty packet list if CHLO arrives firstly. |
| TEST_P(BufferedPacketStoreTest, DeliverEmptyPackets) { |
| QuicConnectionId conn_id = 1; |
| QuicSocketAddress client_address(QuicIpAddress::Loopback4(), 1); |
| EXPECT_CALL(*dispatcher_, ShouldCreateOrBufferPacketForConnection(conn_id)); |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(conn_id, client_address)) |
| .WillOnce(testing::Return(CreateSession( |
| dispatcher_.get(), config_, conn_id, client_address, &mock_helper_, |
| &mock_alarm_factory_, &crypto_config_, |
| QuicDispatcherPeer::GetCache(dispatcher_.get()), &session1_))); |
| ProcessPacket(client_address, conn_id, true, SerializeFullCHLO()); |
| } |
| |
| // Tests that a retransmitted CHLO arrives after a connection for the |
| // CHLO has been created. |
| TEST_P(BufferedPacketStoreTest, ReceiveRetransmittedCHLO) { |
| InSequence s; |
| QuicSocketAddress client_address(QuicIpAddress::Loopback4(), 1); |
| server_address_ = QuicSocketAddress(QuicIpAddress::Any4(), 5); |
| QuicConnectionId conn_id = 1; |
| ProcessPacket(client_address, conn_id, true, QuicStrCat("data packet ", 2), |
| PACKET_8BYTE_CONNECTION_ID, PACKET_6BYTE_PACKET_NUMBER, |
| /*packet_number=*/2); |
| |
| // When CHLO arrives, a new session should be created, and all packets |
| // buffered should be delivered to the session. |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(conn_id, client_address)) |
| .Times(1) // Only triggered by 1st CHLO. |
| .WillOnce(testing::Return(CreateSession( |
| dispatcher_.get(), config_, conn_id, client_address, &mock_helper_, |
| &mock_alarm_factory_, &crypto_config_, |
| QuicDispatcherPeer::GetCache(dispatcher_.get()), &session1_))); |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .Times(3) // Triggered by 1 data packet and 2 CHLOs. |
| .WillRepeatedly(testing::WithArg<2>( |
| Invoke(CreateFunctor(&QuicDispatcherTest::ValidatePacket, |
| base::Unretained(this), conn_id)))); |
| ProcessPacket(client_address, conn_id, true, SerializeFullCHLO()); |
| |
| ProcessPacket(client_address, conn_id, true, SerializeFullCHLO()); |
| } |
| |
| // Tests that expiration of a connection add connection id to time wait list. |
| TEST_P(BufferedPacketStoreTest, ReceiveCHLOAfterExpiration) { |
| InSequence s; |
| CreateTimeWaitListManager(); |
| QuicBufferedPacketStore* store = |
| QuicDispatcherPeer::GetBufferedPackets(dispatcher_.get()); |
| QuicBufferedPacketStorePeer::set_clock(store, mock_helper_.GetClock()); |
| |
| QuicSocketAddress client_address(QuicIpAddress::Loopback4(), 1); |
| server_address_ = QuicSocketAddress(QuicIpAddress::Any4(), 5); |
| QuicConnectionId conn_id = 1; |
| ProcessPacket(client_address, conn_id, true, QuicStrCat("data packet ", 2), |
| PACKET_8BYTE_CONNECTION_ID, PACKET_6BYTE_PACKET_NUMBER, |
| /*packet_number=*/2); |
| |
| mock_helper_.AdvanceTime( |
| QuicTime::Delta::FromSeconds(kInitialIdleTimeoutSecs)); |
| QuicAlarm* alarm = QuicBufferedPacketStorePeer::expiration_alarm(store); |
| // Cancel alarm as if it had been fired. |
| alarm->Cancel(); |
| store->OnExpirationTimeout(); |
| // New arrived CHLO will be dropped because this connection is in time wait |
| // list. |
| ASSERT_TRUE(time_wait_list_manager_->IsConnectionIdInTimeWait(conn_id)); |
| EXPECT_CALL(*time_wait_list_manager_, ProcessPacket(_, _, conn_id, _, _)); |
| ProcessPacket(client_address, conn_id, true, SerializeFullCHLO()); |
| } |
| |
| TEST_P(BufferedPacketStoreTest, ProcessCHLOsUptoLimitAndBufferTheRest) { |
| FLAGS_quic_reloadable_flag_quic_limit_num_new_sessions_per_epoll_loop = true; |
| // Process more than (|kMaxNumSessionsToCreate| + |
| // |kDefaultMaxConnectionsInStore|) CHLOs, |
| // the first |kMaxNumSessionsToCreate| should create connections immediately, |
| // the next |kDefaultMaxConnectionsInStore| should be buffered, |
| // the rest should be dropped. |
| QuicBufferedPacketStore* store = |
| QuicDispatcherPeer::GetBufferedPackets(dispatcher_.get()); |
| const size_t kNumCHLOs = |
| kMaxNumSessionsToCreate + kDefaultMaxConnectionsInStore + 1; |
| for (size_t conn_id = 1; conn_id <= kNumCHLOs; ++conn_id) { |
| if (FLAGS_quic_reloadable_flag_quic_create_session_after_insertion) { |
| EXPECT_CALL(*dispatcher_, |
| ShouldCreateOrBufferPacketForConnection(conn_id)); |
| } |
| if (!FLAGS_quic_reloadable_flag_quic_create_session_after_insertion && |
| conn_id < kNumCHLOs) { |
| // Except the last connection, all connections for previous CHLOs should |
| // be regarded as newly added. |
| EXPECT_CALL(*dispatcher_, |
| ShouldCreateOrBufferPacketForConnection(conn_id)); |
| } |
| if (conn_id <= kMaxNumSessionsToCreate) { |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(conn_id, client_addr_)) |
| .WillOnce(testing::Return(CreateSession( |
| dispatcher_.get(), config_, conn_id, client_addr_, &mock_helper_, |
| &mock_alarm_factory_, &crypto_config_, |
| QuicDispatcherPeer::GetCache(dispatcher_.get()), &session1_))); |
| EXPECT_CALL( |
| *reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillOnce(testing::WithArg<2>( |
| Invoke(CreateFunctor(&QuicDispatcherTest::ValidatePacket, |
| base::Unretained(this), conn_id)))); |
| } |
| ProcessPacket(client_addr_, conn_id, true, SerializeFullCHLO()); |
| if (conn_id <= kMaxNumSessionsToCreate + kDefaultMaxConnectionsInStore && |
| conn_id > kMaxNumSessionsToCreate) { |
| EXPECT_TRUE(store->HasChloForConnection(conn_id)); |
| } else { |
| // First |kMaxNumSessionsToCreate| CHLOs should be passed to new |
| // connections immediately, and the last CHLO should be dropped as the |
| // store is full. |
| EXPECT_FALSE(store->HasChloForConnection(conn_id)); |
| } |
| } |
| |
| // Graduately consume buffered CHLOs. The buffered connections should be |
| // created but the dropped one shouldn't. |
| for (size_t conn_id = kMaxNumSessionsToCreate + 1; |
| conn_id <= kMaxNumSessionsToCreate + kDefaultMaxConnectionsInStore; |
| ++conn_id) { |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(conn_id, client_addr_)) |
| .WillOnce(testing::Return(CreateSession( |
| dispatcher_.get(), config_, conn_id, client_addr_, &mock_helper_, |
| &mock_alarm_factory_, &crypto_config_, |
| QuicDispatcherPeer::GetCache(dispatcher_.get()), &session1_))); |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillOnce(testing::WithArg<2>( |
| Invoke(CreateFunctor(&QuicDispatcherTest::ValidatePacket, |
| base::Unretained(this), conn_id)))); |
| } |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(kNumCHLOs, client_addr_)) |
| .Times(0); |
| |
| while (store->HasChlosBuffered()) { |
| dispatcher_->ProcessBufferedChlos(kMaxNumSessionsToCreate); |
| } |
| |
| EXPECT_EQ(static_cast<size_t>(kMaxNumSessionsToCreate) + |
| kDefaultMaxConnectionsInStore, |
| session1_->connection_id()); |
| } |
| |
| // Duplicated CHLO shouldn't be buffered. |
| TEST_P(BufferedPacketStoreTest, BufferDuplicatedCHLO) { |
| FLAGS_quic_reloadable_flag_quic_limit_num_new_sessions_per_epoll_loop = true; |
| for (QuicConnectionId conn_id = 1; conn_id <= kMaxNumSessionsToCreate + 1; |
| ++conn_id) { |
| // Last CHLO will be buffered. Others will create connection right away. |
| if (conn_id <= kMaxNumSessionsToCreate) { |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(conn_id, client_addr_)) |
| .WillOnce(testing::Return(CreateSession( |
| dispatcher_.get(), config_, conn_id, client_addr_, &mock_helper_, |
| &mock_alarm_factory_, &crypto_config_, |
| QuicDispatcherPeer::GetCache(dispatcher_.get()), &session1_))); |
| EXPECT_CALL( |
| *reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillOnce(testing::WithArg<2>( |
| Invoke(CreateFunctor(&QuicDispatcherTest::ValidatePacket, |
| base::Unretained(this), conn_id)))); |
| } |
| ProcessPacket(client_addr_, conn_id, true, SerializeFullCHLO()); |
| } |
| // Retransmit CHLO on last connection should be dropped. |
| QuicConnectionId last_connection = kMaxNumSessionsToCreate + 1; |
| ProcessPacket(client_addr_, last_connection, true, SerializeFullCHLO()); |
| |
| size_t packets_buffered = 2; |
| |
| // Reset counter and process buffered CHLO. |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(last_connection, client_addr_)) |
| .WillOnce(testing::Return(CreateSession( |
| dispatcher_.get(), config_, last_connection, client_addr_, |
| &mock_helper_, &mock_alarm_factory_, &crypto_config_, |
| QuicDispatcherPeer::GetCache(dispatcher_.get()), &session1_))); |
| // Only one packet(CHLO) should be process. |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .Times(packets_buffered) |
| .WillRepeatedly(testing::WithArg<2>( |
| Invoke(CreateFunctor(&QuicDispatcherTest::ValidatePacket, |
| base::Unretained(this), last_connection)))); |
| dispatcher_->ProcessBufferedChlos(kMaxNumSessionsToCreate); |
| } |
| |
| TEST_P(BufferedPacketStoreTest, BufferNonChloPacketsUptoLimitWithChloBuffered) { |
| FLAGS_quic_reloadable_flag_quic_limit_num_new_sessions_per_epoll_loop = true; |
| QuicConnectionId last_connection_id = kMaxNumSessionsToCreate + 1; |
| for (QuicConnectionId conn_id = 1; conn_id <= last_connection_id; ++conn_id) { |
| // Last CHLO will be buffered. Others will create connection right away. |
| if (conn_id <= kMaxNumSessionsToCreate) { |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(conn_id, client_addr_)) |
| .WillOnce(testing::Return(CreateSession( |
| dispatcher_.get(), config_, conn_id, client_addr_, &mock_helper_, |
| &mock_alarm_factory_, &crypto_config_, |
| QuicDispatcherPeer::GetCache(dispatcher_.get()), &session1_))); |
| EXPECT_CALL( |
| *reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillOnce(testing::WithArg<2>( |
| Invoke(CreateFunctor(&QuicDispatcherTest::ValidatePacket, |
| base::Unretained(this), conn_id)))); |
| } |
| ProcessPacket(client_addr_, conn_id, true, SerializeFullCHLO()); |
| } |
| |
| // Process another |kDefaultMaxUndecryptablePackets| + 1 data packets. The |
| // last one should be dropped. |
| for (QuicPacketNumber packet_number = 2; |
| packet_number <= kDefaultMaxUndecryptablePackets + 2; ++packet_number) { |
| ProcessPacket(client_addr_, last_connection_id, true, "data packet"); |
| } |
| |
| // Reset counter and process buffered CHLO. |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(last_connection_id, client_addr_)) |
| .WillOnce(testing::Return(CreateSession( |
| dispatcher_.get(), config_, last_connection_id, client_addr_, |
| &mock_helper_, &mock_alarm_factory_, &crypto_config_, |
| QuicDispatcherPeer::GetCache(dispatcher_.get()), &session1_))); |
| // Only CHLO and following |kDefaultMaxUndecryptablePackets| data packets |
| // should be process. |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .Times(kDefaultMaxUndecryptablePackets + 1) |
| .WillRepeatedly(testing::WithArg<2>( |
| Invoke(CreateFunctor(&QuicDispatcherTest::ValidatePacket, |
| base::Unretained(this), last_connection_id)))); |
| dispatcher_->ProcessBufferedChlos(kMaxNumSessionsToCreate); |
| } |
| |
| // Tests that when dispatcher's packet buffer is full, a CHLO on connection |
| // which doesn't have buffered CHLO should be buffered. |
| TEST_P(BufferedPacketStoreTest, ReceiveCHLOForBufferedConnection) { |
| FLAGS_quic_reloadable_flag_quic_limit_num_new_sessions_per_epoll_loop = true; |
| QuicBufferedPacketStore* store = |
| QuicDispatcherPeer::GetBufferedPackets(dispatcher_.get()); |
| |
| QuicConnectionId conn_id = 1; |
| ProcessPacket(client_addr_, conn_id, true, "data packet", |
| PACKET_8BYTE_CONNECTION_ID, PACKET_6BYTE_PACKET_NUMBER, |
| /*packet_number=*/1); |
| // Fill packet buffer to full with CHLOs on other connections. Need to feed |
| // extra CHLOs because the first |kMaxNumSessionsToCreate| are going to create |
| // session directly. |
| for (conn_id = 2; |
| conn_id <= kDefaultMaxConnectionsInStore + kMaxNumSessionsToCreate; |
| ++conn_id) { |
| if (conn_id <= kMaxNumSessionsToCreate + 1) { |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(conn_id, client_addr_)) |
| .WillOnce(testing::Return(CreateSession( |
| dispatcher_.get(), config_, conn_id, client_addr_, &mock_helper_, |
| &mock_alarm_factory_, &crypto_config_, |
| QuicDispatcherPeer::GetCache(dispatcher_.get()), &session1_))); |
| EXPECT_CALL( |
| *reinterpret_cast<MockQuicConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillOnce(testing::WithArg<2>( |
| Invoke(CreateFunctor(&QuicDispatcherTest::ValidatePacket, |
| base::Unretained(this), conn_id)))); |
| } |
| ProcessPacket(client_addr_, conn_id, true, SerializeFullCHLO()); |
| } |
| EXPECT_FALSE(store->HasChloForConnection(/*connection_id=*/1)); |
| |
| // CHLO on connection 1 should still be buffered. |
| ProcessPacket(client_addr_, /*connection_id=*/1, true, SerializeFullCHLO()); |
| EXPECT_TRUE(store->HasChloForConnection(/*connection_id=*/1)); |
| } |
| |
| // Test which exercises the async GetProof codepaths, especially in the context |
| // of stateless rejection. |
| class AsyncGetProofTest : public QuicDispatcherTest { |
| public: |
| AsyncGetProofTest() |
| : QuicDispatcherTest( |
| std::unique_ptr<FakeProofSource>(new FakeProofSource())), |
| client_addr_(QuicIpAddress::Loopback4(), 1234), |
| crypto_config_peer_(&crypto_config_), |
| signed_config_(new QuicSignedServerConfig) { |
| FLAGS_quic_reloadable_flag_enable_quic_stateless_reject_support = true; |
| FLAGS_quic_reloadable_flag_quic_use_cheap_stateless_rejects = true; |
| FLAGS_quic_reloadable_flag_quic_create_session_after_insertion = true; |
| } |
| |
| void SetUp() override { |
| QuicDispatcherTest::SetUp(); |
| |
| clock_ = QuicDispatcherPeer::GetHelper(dispatcher_.get())->GetClock(); |
| QuicVersion version = AllSupportedVersions().front(); |
| chlo_ = crypto_test_utils::GenerateDefaultInchoateCHLO(clock_, version, |
| &crypto_config_); |
| chlo_.SetVector(net::kCOPT, net::QuicTagVector{net::kSREJ}); |
| // Pass an inchoate CHLO. |
| crypto_test_utils::GenerateFullCHLO( |
| chlo_, &crypto_config_, server_addr_, client_addr_, version, clock_, |
| signed_config_, QuicDispatcherPeer::GetCache(dispatcher_.get()), |
| &full_chlo_); |
| |
| GetFakeProofSource()->Activate(); |
| } |
| |
| FakeProofSource* GetFakeProofSource() const { |
| return static_cast<FakeProofSource*>(crypto_config_peer_.GetProofSource()); |
| } |
| |
| string SerializeFullCHLO() { |
| return full_chlo_.GetSerialized().AsStringPiece().as_string(); |
| } |
| |
| string SerializeCHLO() { |
| return chlo_.GetSerialized().AsStringPiece().as_string(); |
| } |
| |
| // Sets up a session, and crypto stream based on the test parameters. |
| QuicServerSessionBase* GetSession(QuicConnectionId connection_id) { |
| auto it = sessions_.find(connection_id); |
| if (it != sessions_.end()) { |
| return it->second.session; |
| } |
| |
| TestQuicSpdyServerSession* session; |
| CreateSession(dispatcher_.get(), config_, connection_id, client_addr_, |
| &mock_helper_, &mock_alarm_factory_, &crypto_config_, |
| QuicDispatcherPeer::GetCache(dispatcher_.get()), &session); |
| |
| std::unique_ptr<MockQuicCryptoServerStream> crypto_stream( |
| new MockQuicCryptoServerStream( |
| crypto_config_, QuicDispatcherPeer::GetCache(dispatcher_.get()), |
| session, session->stream_helper())); |
| session->SetCryptoStream(crypto_stream.get()); |
| crypto_stream->SetPeerSupportsStatelessRejects(true); |
| const bool ok = |
| sessions_ |
| .insert(std::make_pair( |
| connection_id, SessionInfo{session, std::move(crypto_stream)})) |
| .second; |
| CHECK(ok); |
| return session; |
| } |
| |
| protected: |
| const QuicSocketAddress client_addr_; |
| |
| private: |
| QuicCryptoServerConfigPeer crypto_config_peer_; |
| QuicSocketAddress server_addr_; |
| QuicReferenceCountedPointer<QuicSignedServerConfig> signed_config_; |
| const QuicClock* clock_; |
| CryptoHandshakeMessage chlo_; |
| CryptoHandshakeMessage full_chlo_; |
| |
| struct SessionInfo { |
| TestQuicSpdyServerSession* session; |
| std::unique_ptr<MockQuicCryptoServerStream> crypto_stream; |
| }; |
| std::map<QuicConnectionId, SessionInfo> sessions_; |
| }; |
| |
| // Test a simple situation of connections which the StatelessRejector will |
| // accept. |
| TEST_F(AsyncGetProofTest, BasicAccept) { |
| QuicConnectionId conn_id = 1; |
| |
| testing::MockFunction<void(int check_point)> check; |
| { |
| InSequence s; |
| |
| EXPECT_CALL(check, Call(1)); |
| EXPECT_CALL(*dispatcher_, ShouldCreateOrBufferPacketForConnection(conn_id)); |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(conn_id, client_addr_)) |
| .WillOnce(testing::Return(GetSession(conn_id))); |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>( |
| GetSession(conn_id)->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillOnce(testing::WithArg<2>( |
| Invoke(CreateFunctor(&QuicDispatcherTest::ValidatePacket, |
| base::Unretained(this), conn_id)))); |
| |
| EXPECT_CALL(check, Call(2)); |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>( |
| GetSession(conn_id)->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillOnce(testing::WithArg<2>( |
| Invoke(CreateFunctor(&QuicDispatcherTest::ValidatePacket, |
| base::Unretained(this), conn_id)))); |
| } |
| |
| // Send a CHLO that the StatelessRejector will accept. |
| ProcessPacket(client_addr_, conn_id, true, SerializeFullCHLO()); |
| ASSERT_EQ(GetFakeProofSource()->NumPendingCallbacks(), 1); |
| |
| check.Call(1); |
| // Complete the ProofSource::GetProof call and verify that a session is |
| // created. |
| GetFakeProofSource()->InvokePendingCallback(0); |
| ASSERT_EQ(GetFakeProofSource()->NumPendingCallbacks(), 0); |
| |
| check.Call(2); |
| // Verify that a data packet gets processed immediately. |
| ProcessPacket(client_addr_, conn_id, true, "My name is Data"); |
| } |
| |
| // Test a simple situation of connections which the StatelessRejector will |
| // reject. |
| TEST_F(AsyncGetProofTest, BasicReject) { |
| CreateTimeWaitListManager(); |
| |
| QuicConnectionId conn_id = 1; |
| |
| testing::MockFunction<void(int check_point)> check; |
| { |
| InSequence s; |
| EXPECT_CALL(check, Call(1)); |
| EXPECT_CALL(*time_wait_list_manager_, |
| AddConnectionIdToTimeWait(conn_id, _, true, _)); |
| EXPECT_CALL(*time_wait_list_manager_, |
| ProcessPacket(_, client_addr_, conn_id, _, _)); |
| |
| EXPECT_CALL(check, Call(2)); |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(conn_id, client_addr_)) |
| .Times(0); |
| EXPECT_CALL(*time_wait_list_manager_, |
| ProcessPacket(_, client_addr_, conn_id, _, _)); |
| } |
| |
| // Send a CHLO that the StatelessRejector will reject. |
| ProcessPacket(client_addr_, conn_id, true, SerializeCHLO()); |
| ASSERT_EQ(GetFakeProofSource()->NumPendingCallbacks(), 1); |
| |
| // Complete the ProofSource::GetProof call and verify that the connection and |
| // packet are processed by the time wait list manager. |
| check.Call(1); |
| GetFakeProofSource()->InvokePendingCallback(0); |
| ASSERT_EQ(GetFakeProofSource()->NumPendingCallbacks(), 0); |
| |
| // Verify that a data packet is passed to the time wait list manager. |
| check.Call(2); |
| ProcessPacket(client_addr_, conn_id, true, "My name is Data"); |
| } |
| |
| // Test a situation with multiple interleaved connections which the |
| // StatelessRejector will accept. |
| TEST_F(AsyncGetProofTest, MultipleAccept) { |
| QuicConnectionId conn_id_1 = 1; |
| QuicConnectionId conn_id_2 = 2; |
| QuicBufferedPacketStore* store = |
| QuicDispatcherPeer::GetBufferedPackets(dispatcher_.get()); |
| |
| testing::MockFunction<void(int check_point)> check; |
| { |
| InSequence s; |
| EXPECT_CALL(check, Call(1)); |
| EXPECT_CALL(*dispatcher_, |
| ShouldCreateOrBufferPacketForConnection(conn_id_2)); |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(conn_id_2, client_addr_)) |
| .WillOnce(testing::Return(GetSession(conn_id_2))); |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>( |
| GetSession(conn_id_2)->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillOnce(testing::WithArg<2>( |
| Invoke(CreateFunctor(&QuicDispatcherTest::ValidatePacket, |
| base::Unretained(this), conn_id_2)))); |
| |
| EXPECT_CALL(check, Call(2)); |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>( |
| GetSession(conn_id_2)->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillOnce(testing::WithArg<2>( |
| Invoke(CreateFunctor(&QuicDispatcherTest::ValidatePacket, |
| base::Unretained(this), conn_id_2)))); |
| |
| EXPECT_CALL(check, Call(3)); |
| EXPECT_CALL(*dispatcher_, |
| ShouldCreateOrBufferPacketForConnection(conn_id_1)); |
| |
| EXPECT_CALL(check, Call(4)); |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(conn_id_1, client_addr_)) |
| .WillOnce(testing::Return(GetSession(conn_id_1))); |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>( |
| GetSession(conn_id_1)->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillRepeatedly(testing::WithArg<2>( |
| Invoke(CreateFunctor(&QuicDispatcherTest::ValidatePacket, |
| base::Unretained(this), conn_id_1)))); |
| } |
| |
| // Send a CHLO that the StatelessRejector will accept. |
| ProcessPacket(client_addr_, conn_id_1, true, SerializeFullCHLO()); |
| ASSERT_EQ(GetFakeProofSource()->NumPendingCallbacks(), 1); |
| |
| // Send another CHLO that the StatelessRejector will accept. |
| ProcessPacket(client_addr_, conn_id_2, true, SerializeFullCHLO()); |
| ASSERT_EQ(GetFakeProofSource()->NumPendingCallbacks(), 2); |
| |
| // Complete the second ProofSource::GetProof call and verify that a session is |
| // created. |
| check.Call(1); |
| GetFakeProofSource()->InvokePendingCallback(1); |
| ASSERT_EQ(GetFakeProofSource()->NumPendingCallbacks(), 1); |
| |
| // Verify that a data packet on that connection gets processed immediately. |
| check.Call(2); |
| ProcessPacket(client_addr_, conn_id_2, true, "My name is Data"); |
| |
| // Verify that a data packet on the other connection does not get processed |
| // yet. |
| check.Call(3); |
| ProcessPacket(client_addr_, conn_id_1, true, "My name is Data"); |
| EXPECT_TRUE(store->HasBufferedPackets(conn_id_1)); |
| EXPECT_FALSE(store->HasBufferedPackets(conn_id_2)); |
| |
| // Complete the first ProofSource::GetProof call and verify that a session is |
| // created and the buffered packet is processed. |
| check.Call(4); |
| GetFakeProofSource()->InvokePendingCallback(0); |
| ASSERT_EQ(GetFakeProofSource()->NumPendingCallbacks(), 0); |
| } |
| |
| // Test a situation with multiple interleaved connections which the |
| // StatelessRejector will reject. |
| TEST_F(AsyncGetProofTest, MultipleReject) { |
| CreateTimeWaitListManager(); |
| |
| QuicConnectionId conn_id_1 = 1; |
| QuicConnectionId conn_id_2 = 2; |
| QuicBufferedPacketStore* store = |
| QuicDispatcherPeer::GetBufferedPackets(dispatcher_.get()); |
| |
| testing::MockFunction<void(int check_point)> check; |
| { |
| InSequence s; |
| |
| EXPECT_CALL(check, Call(1)); |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(conn_id_2, client_addr_)) |
| .Times(0); |
| EXPECT_CALL(*time_wait_list_manager_, |
| AddConnectionIdToTimeWait(conn_id_2, _, true, _)); |
| EXPECT_CALL(*time_wait_list_manager_, |
| ProcessPacket(_, client_addr_, conn_id_2, _, _)); |
| |
| EXPECT_CALL(check, Call(2)); |
| EXPECT_CALL(*time_wait_list_manager_, |
| ProcessPacket(_, client_addr_, conn_id_2, _, _)); |
| |
| EXPECT_CALL(check, Call(3)); |
| EXPECT_CALL(*dispatcher_, |
| ShouldCreateOrBufferPacketForConnection(conn_id_1)); |
| |
| EXPECT_CALL(check, Call(4)); |
| EXPECT_CALL(*time_wait_list_manager_, |
| AddConnectionIdToTimeWait(conn_id_1, _, true, _)); |
| EXPECT_CALL(*time_wait_list_manager_, |
| ProcessPacket(_, client_addr_, conn_id_1, _, _)); |
| } |
| |
| // Send a CHLO that the StatelessRejector will reject. |
| ProcessPacket(client_addr_, conn_id_1, true, SerializeCHLO()); |
| ASSERT_EQ(GetFakeProofSource()->NumPendingCallbacks(), 1); |
| |
| // Send another CHLO that the StatelessRejector will reject. |
| ProcessPacket(client_addr_, conn_id_2, true, SerializeCHLO()); |
| ASSERT_EQ(GetFakeProofSource()->NumPendingCallbacks(), 2); |
| |
| // Complete the second ProofSource::GetProof call and verify that the |
| // connection and packet are processed by the time wait manager. |
| check.Call(1); |
| GetFakeProofSource()->InvokePendingCallback(1); |
| ASSERT_EQ(GetFakeProofSource()->NumPendingCallbacks(), 1); |
| |
| // Verify that a data packet on that connection gets processed immediately by |
| // the time wait manager. |
| check.Call(2); |
| ProcessPacket(client_addr_, conn_id_2, true, "My name is Data"); |
| |
| // Verify that a data packet on the first connection gets buffered. |
| check.Call(3); |
| ProcessPacket(client_addr_, conn_id_1, true, "My name is Data"); |
| EXPECT_TRUE(store->HasBufferedPackets(conn_id_1)); |
| EXPECT_FALSE(store->HasBufferedPackets(conn_id_2)); |
| |
| // Complete the first ProofSource::GetProof call and verify that the CHLO is |
| // processed by the time wait manager and the remaining packets are discarded. |
| check.Call(4); |
| GetFakeProofSource()->InvokePendingCallback(0); |
| ASSERT_EQ(GetFakeProofSource()->NumPendingCallbacks(), 0); |
| EXPECT_FALSE(store->HasBufferedPackets(conn_id_1)); |
| EXPECT_FALSE(store->HasBufferedPackets(conn_id_2)); |
| } |
| |
| // Test a situation with multiple identical CHLOs which the StatelessRejector |
| // will reject. |
| TEST_F(AsyncGetProofTest, MultipleIdenticalReject) { |
| CreateTimeWaitListManager(); |
| |
| QuicConnectionId conn_id_1 = 1; |
| QuicBufferedPacketStore* store = |
| QuicDispatcherPeer::GetBufferedPackets(dispatcher_.get()); |
| |
| testing::MockFunction<void(int check_point)> check; |
| { |
| InSequence s; |
| EXPECT_CALL(check, Call(1)); |
| EXPECT_CALL(*dispatcher_, |
| ShouldCreateOrBufferPacketForConnection(conn_id_1)); |
| |
| EXPECT_CALL(check, Call(2)); |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(conn_id_1, client_addr_)) |
| .Times(0); |
| EXPECT_CALL(*time_wait_list_manager_, |
| AddConnectionIdToTimeWait(conn_id_1, _, true, _)); |
| EXPECT_CALL(*time_wait_list_manager_, |
| ProcessPacket(_, client_addr_, conn_id_1, _, _)); |
| } |
| |
| // Send a CHLO that the StatelessRejector will reject. |
| ProcessPacket(client_addr_, conn_id_1, true, SerializeCHLO()); |
| ASSERT_EQ(GetFakeProofSource()->NumPendingCallbacks(), 1); |
| EXPECT_FALSE(store->HasBufferedPackets(conn_id_1)); |
| |
| // Send an identical CHLO which should get buffered. |
| check.Call(1); |
| ProcessPacket(client_addr_, conn_id_1, true, SerializeCHLO()); |
| ASSERT_EQ(GetFakeProofSource()->NumPendingCallbacks(), 1); |
| EXPECT_TRUE(store->HasBufferedPackets(conn_id_1)); |
| |
| // Complete the ProofSource::GetProof call and verify that the CHLO is |
| // rejected and the copy is discarded. |
| check.Call(2); |
| GetFakeProofSource()->InvokePendingCallback(0); |
| ASSERT_EQ(GetFakeProofSource()->NumPendingCallbacks(), 0); |
| EXPECT_FALSE(store->HasBufferedPackets(conn_id_1)); |
| } |
| |
| // Test dispatcher behavior when packets time out of the buffer while CHLO |
| // validation is still pending. |
| TEST_F(AsyncGetProofTest, BufferTimeout) { |
| CreateTimeWaitListManager(); |
| |
| QuicConnectionId conn_id = 1; |
| QuicBufferedPacketStore* store = |
| QuicDispatcherPeer::GetBufferedPackets(dispatcher_.get()); |
| QuicBufferedPacketStorePeer::set_clock(store, mock_helper_.GetClock()); |
| |
| testing::MockFunction<void(int check_point)> check; |
| { |
| InSequence s; |
| EXPECT_CALL(check, Call(1)); |
| EXPECT_CALL(*dispatcher_, ShouldCreateOrBufferPacketForConnection(conn_id)); |
| |
| EXPECT_CALL(check, Call(2)); |
| EXPECT_CALL(*time_wait_list_manager_, |
| ProcessPacket(_, client_addr_, conn_id, _, _)); |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(conn_id, client_addr_)) |
| .Times(0); |
| } |
| |
| // Send a CHLO that the StatelessRejector will accept. |
| ProcessPacket(client_addr_, conn_id, true, SerializeFullCHLO()); |
| ASSERT_EQ(GetFakeProofSource()->NumPendingCallbacks(), 1); |
| EXPECT_FALSE(store->HasBufferedPackets(conn_id)); |
| |
| // Send a data packet that will get buffered |
| check.Call(1); |
| ProcessPacket(client_addr_, conn_id, true, "My name is Data"); |
| EXPECT_TRUE(store->HasBufferedPackets(conn_id)); |
| |
| // Pretend that enough time has gone by for the packets to get expired out of |
| // the buffer |
| mock_helper_.AdvanceTime( |
| QuicTime::Delta::FromSeconds(kInitialIdleTimeoutSecs)); |
| QuicBufferedPacketStorePeer::expiration_alarm(store)->Cancel(); |
| store->OnExpirationTimeout(); |
| EXPECT_FALSE(store->HasBufferedPackets(conn_id)); |
| EXPECT_TRUE(time_wait_list_manager_->IsConnectionIdInTimeWait(conn_id)); |
| |
| // Now allow the CHLO validation to complete, and verify that no connection |
| // gets created. |
| check.Call(2); |
| GetFakeProofSource()->InvokePendingCallback(0); |
| ASSERT_EQ(GetFakeProofSource()->NumPendingCallbacks(), 0); |
| EXPECT_FALSE(store->HasBufferedPackets(conn_id)); |
| EXPECT_TRUE(time_wait_list_manager_->IsConnectionIdInTimeWait(conn_id)); |
| } |
| |
| // Test behavior when packets time out of the buffer *and* the connection times |
| // out of the time wait manager while CHLO validation is still pending. This |
| // *should* be impossible, but anything can happen with timing conditions. |
| TEST_F(AsyncGetProofTest, TimeWaitTimeout) { |
| QuicConnectionId conn_id = 1; |
| QuicBufferedPacketStore* store = |
| QuicDispatcherPeer::GetBufferedPackets(dispatcher_.get()); |
| QuicBufferedPacketStorePeer::set_clock(store, mock_helper_.GetClock()); |
| CreateTimeWaitListManager(); |
| QuicTimeWaitListManagerPeer::set_clock(time_wait_list_manager_, |
| mock_helper_.GetClock()); |
| |
| testing::MockFunction<void(int check_point)> check; |
| { |
| InSequence s; |
| EXPECT_CALL(check, Call(1)); |
| EXPECT_CALL(*dispatcher_, ShouldCreateOrBufferPacketForConnection(conn_id)); |
| |
| EXPECT_CALL(check, Call(2)); |
| EXPECT_CALL(*dispatcher_, ShouldCreateOrBufferPacketForConnection(conn_id)); |
| EXPECT_CALL(*dispatcher_, CreateQuicSession(conn_id, client_addr_)) |
| .WillOnce(testing::Return(GetSession(conn_id))); |
| EXPECT_CALL(*reinterpret_cast<MockQuicConnection*>( |
| GetSession(conn_id)->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillOnce(testing::WithArg<2>( |
| Invoke(CreateFunctor(&QuicDispatcherTest::ValidatePacket, |
| base::Unretained(this), conn_id)))); |
| } |
| |
| // Send a CHLO that the StatelessRejector will accept. |
| ProcessPacket(client_addr_, conn_id, true, SerializeFullCHLO()); |
| ASSERT_EQ(GetFakeProofSource()->NumPendingCallbacks(), 1); |
| EXPECT_FALSE(store->HasBufferedPackets(conn_id)); |
| |
| // Send a data packet that will get buffered |
| check.Call(1); |
| ProcessPacket(client_addr_, conn_id, true, "My name is Data"); |
| EXPECT_TRUE(store->HasBufferedPackets(conn_id)); |
| |
| // Pretend that enough time has gone by for the packets to get expired out of |
| // the buffer |
| mock_helper_.AdvanceTime( |
| QuicTime::Delta::FromSeconds(kInitialIdleTimeoutSecs)); |
| QuicBufferedPacketStorePeer::expiration_alarm(store)->Cancel(); |
| store->OnExpirationTimeout(); |
| EXPECT_FALSE(store->HasBufferedPackets(conn_id)); |
| EXPECT_TRUE(time_wait_list_manager_->IsConnectionIdInTimeWait(conn_id)); |
| |
| // Pretend that enough time has gone by for the connection ID to be removed |
| // from the time wait manager |
| mock_helper_.AdvanceTime( |
| QuicTimeWaitListManagerPeer::time_wait_period(time_wait_list_manager_)); |
| QuicTimeWaitListManagerPeer::expiration_alarm(time_wait_list_manager_) |
| ->Cancel(); |
| time_wait_list_manager_->CleanUpOldConnectionIds(); |
| EXPECT_FALSE(time_wait_list_manager_->IsConnectionIdInTimeWait(conn_id)); |
| |
| // Now allow the CHLO validation to complete. Expect that a connection is |
| // indeed created, since QUIC has forgotten that this connection ever existed. |
| // This is a miniscule corner case which should never happen in the wild, so |
| // really we are just verifying that the dispatcher does not explode in this |
| // situation. |
| check.Call(2); |
| GetFakeProofSource()->InvokePendingCallback(0); |
| ASSERT_EQ(GetFakeProofSource()->NumPendingCallbacks(), 0); |
| EXPECT_FALSE(store->HasBufferedPackets(conn_id)); |
| EXPECT_FALSE(time_wait_list_manager_->IsConnectionIdInTimeWait(conn_id)); |
| } |
| |
| } // namespace |
| } // namespace test |
| } // namespace net |