| // 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 <ostream> |
| #include <string> |
| |
| #include "base/strings/string_piece.h" |
| #include "net/quic/crypto/crypto_handshake.h" |
| #include "net/quic/crypto/quic_crypto_server_config.h" |
| #include "net/quic/crypto/quic_random.h" |
| #include "net/quic/quic_connection_helper.h" |
| #include "net/quic/quic_crypto_stream.h" |
| #include "net/quic/quic_flags.h" |
| #include "net/quic/quic_utils.h" |
| #include "net/quic/test_tools/quic_test_utils.h" |
| #include "net/tools/epoll_server/epoll_server.h" |
| #include "net/tools/quic/quic_epoll_connection_helper.h" |
| #include "net/tools/quic/quic_packet_writer_wrapper.h" |
| #include "net/tools/quic/quic_time_wait_list_manager.h" |
| #include "net/tools/quic/test_tools/quic_dispatcher_peer.h" |
| #include "net/tools/quic/test_tools/quic_test_utils.h" |
| #include "testing/gmock/include/gmock/gmock.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| using base::StringPiece; |
| using net::EpollServer; |
| using net::test::ConstructEncryptedPacket; |
| using net::test::MockConnection; |
| using net::test::MockSession; |
| using net::test::ValueRestore; |
| using std::string; |
| using std::vector; |
| using testing::DoAll; |
| using testing::InSequence; |
| using testing::Invoke; |
| using testing::WithoutArgs; |
| using testing::_; |
| |
| namespace net { |
| namespace tools { |
| namespace test { |
| namespace { |
| |
| class TestServerSession : public QuicServerSession { |
| public: |
| TestServerSession(const QuicConfig& config, QuicConnection* connection) |
| : QuicServerSession(config, connection, nullptr) {} |
| ~TestServerSession() override{}; |
| |
| MOCK_METHOD2(OnConnectionClosed, void(QuicErrorCode error, bool from_peer)); |
| MOCK_METHOD1(CreateIncomingDataStream, QuicDataStream*(QuicStreamId id)); |
| MOCK_METHOD0(CreateOutgoingDataStream, QuicDataStream*()); |
| |
| void SetCryptoStream(QuicCryptoServerStream* crypto_stream) { |
| crypto_stream_ = crypto_stream; |
| } |
| |
| QuicCryptoServerStream* GetCryptoStream() override { return crypto_stream_; } |
| |
| private: |
| QuicCryptoServerStream* crypto_stream_; |
| |
| DISALLOW_COPY_AND_ASSIGN(TestServerSession); |
| }; |
| |
| class TestDispatcher : public QuicDispatcher { |
| public: |
| TestDispatcher(const QuicConfig& config, |
| const QuicCryptoServerConfig* crypto_config, |
| EpollServer* eps) |
| : QuicDispatcher(config, |
| crypto_config, |
| QuicSupportedVersions(), |
| new QuicDispatcher::DefaultPacketWriterFactory(), |
| new QuicEpollConnectionHelper(eps)) {} |
| |
| MOCK_METHOD3(CreateQuicSession, |
| QuicServerSession*(QuicConnectionId connection_id, |
| const IPEndPoint& server_address, |
| const IPEndPoint& client_address)); |
| |
| 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 MockConnection { |
| public: |
| MockServerConnection(QuicConnectionId connection_id, |
| QuicDispatcher* dispatcher) |
| : MockConnection(connection_id, Perspective::IS_SERVER), |
| dispatcher_(dispatcher) {} |
| |
| void UnregisterOnConnectionClosed() { |
| LOG(ERROR) << "Unregistering " << connection_id(); |
| dispatcher_->OnConnectionClosed(connection_id(), QUIC_NO_ERROR); |
| } |
| |
| private: |
| QuicDispatcher* dispatcher_; |
| }; |
| |
| QuicServerSession* CreateSession(QuicDispatcher* dispatcher, |
| const QuicConfig& config, |
| QuicConnectionId connection_id, |
| const IPEndPoint& client_address, |
| TestServerSession** session) { |
| MockServerConnection* connection = |
| new MockServerConnection(connection_id, dispatcher); |
| *session = new TestServerSession(config, connection); |
| connection->set_visitor(*session); |
| ON_CALL(*connection, SendConnectionClose(_)).WillByDefault( |
| WithoutArgs(Invoke( |
| connection, &MockServerConnection::UnregisterOnConnectionClosed))); |
| EXPECT_CALL(*reinterpret_cast<MockConnection*>((*session)->connection()), |
| ProcessUdpPacket(_, client_address, _)); |
| |
| return *session; |
| } |
| |
| class QuicDispatcherTest : public ::testing::Test { |
| public: |
| QuicDispatcherTest() |
| : helper_(&eps_), |
| crypto_config_(QuicCryptoServerConfig::TESTING, |
| QuicRandom::GetInstance()), |
| dispatcher_(config_, &crypto_config_, &eps_), |
| time_wait_list_manager_(nullptr), |
| session1_(nullptr), |
| session2_(nullptr) { |
| dispatcher_.InitializeWithWriter(new QuicDefaultPacketWriter(1)); |
| } |
| |
| ~QuicDispatcherTest() override {} |
| |
| MockConnection* connection1() { |
| return reinterpret_cast<MockConnection*>(session1_->connection()); |
| } |
| |
| MockConnection* connection2() { |
| return reinterpret_cast<MockConnection*>(session2_->connection()); |
| } |
| |
| void ProcessPacket(IPEndPoint 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_SEQUENCE_NUMBER); |
| } |
| |
| void ProcessPacket(IPEndPoint client_address, |
| QuicConnectionId connection_id, |
| bool has_version_flag, |
| const string& data, |
| QuicConnectionIdLength connection_id_length, |
| QuicSequenceNumberLength sequence_number_length) { |
| ProcessPacket(client_address, connection_id, has_version_flag, data, |
| connection_id_length, sequence_number_length, 1); |
| } |
| |
| void ProcessPacket(IPEndPoint client_address, |
| QuicConnectionId connection_id, |
| bool has_version_flag, |
| const string& data, |
| QuicConnectionIdLength connection_id_length, |
| QuicSequenceNumberLength sequence_number_length, |
| QuicPacketSequenceNumber sequence_number) { |
| scoped_ptr<QuicEncryptedPacket> packet(ConstructEncryptedPacket( |
| connection_id, has_version_flag, false, sequence_number, data, |
| connection_id_length, sequence_number_length)); |
| data_ = string(packet->data(), packet->length()); |
| dispatcher_.ProcessPacket(server_address_, client_address, *packet); |
| } |
| |
| void ValidatePacket(const QuicEncryptedPacket& packet) { |
| EXPECT_EQ(data_.length(), packet.AsStringPiece().length()); |
| EXPECT_EQ(data_, packet.AsStringPiece()); |
| } |
| |
| void CreateTimeWaitListManager() { |
| time_wait_list_manager_ = new MockTimeWaitListManager( |
| QuicDispatcherPeer::GetWriter(&dispatcher_), &dispatcher_, &helper_); |
| // dispatcher_ takes the ownership of time_wait_list_manager_. |
| QuicDispatcherPeer::SetTimeWaitListManager(&dispatcher_, |
| time_wait_list_manager_); |
| } |
| |
| EpollServer eps_; |
| QuicEpollConnectionHelper helper_; |
| QuicConfig config_; |
| QuicCryptoServerConfig crypto_config_; |
| IPEndPoint server_address_; |
| TestDispatcher dispatcher_; |
| MockTimeWaitListManager* time_wait_list_manager_; |
| TestServerSession* session1_; |
| TestServerSession* session2_; |
| string data_; |
| }; |
| |
| TEST_F(QuicDispatcherTest, ProcessPackets) { |
| IPEndPoint client_address(net::test::Loopback4(), 1); |
| server_address_ = IPEndPoint(net::test::Any4(), 5); |
| |
| EXPECT_CALL(dispatcher_, CreateQuicSession(1, _, client_address)) |
| .WillOnce(testing::Return( |
| CreateSession(&dispatcher_, config_, 1, client_address, &session1_))); |
| ProcessPacket(client_address, 1, true, "foo"); |
| 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_, config_, 2, client_address, &session2_))); |
| ProcessPacket(client_address, 2, true, "bar"); |
| |
| EXPECT_CALL(*reinterpret_cast<MockConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)).Times(1). |
| WillOnce(testing::WithArgs<2>(Invoke( |
| this, &QuicDispatcherTest::ValidatePacket))); |
| ProcessPacket(client_address, 1, false, "eep"); |
| } |
| |
| TEST_F(QuicDispatcherTest, Shutdown) { |
| IPEndPoint client_address(net::test::Loopback4(), 1); |
| |
| EXPECT_CALL(dispatcher_, CreateQuicSession(_, _, client_address)) |
| .WillOnce(testing::Return( |
| CreateSession(&dispatcher_, config_, 1, client_address, &session1_))); |
| |
| ProcessPacket(client_address, 1, true, "foo"); |
| |
| EXPECT_CALL(*reinterpret_cast<MockConnection*>(session1_->connection()), |
| SendConnectionClose(QUIC_PEER_GOING_AWAY)); |
| |
| dispatcher_.Shutdown(); |
| } |
| |
| TEST_F(QuicDispatcherTest, TimeWaitListManager) { |
| CreateTimeWaitListManager(); |
| |
| // Create a new session. |
| IPEndPoint client_address(net::test::Loopback4(), 1); |
| QuicConnectionId connection_id = 1; |
| EXPECT_CALL(dispatcher_, CreateQuicSession(connection_id, _, client_address)) |
| .WillOnce(testing::Return(CreateSession( |
| &dispatcher_, config_, connection_id, client_address, &session1_))); |
| ProcessPacket(client_address, connection_id, true, "foo"); |
| |
| // 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_sequence_number = 19191; |
| packet.nonce_proof = 132232; |
| scoped_ptr<QuicEncryptedPacket> encrypted( |
| QuicFramer::BuildPublicResetPacket(packet)); |
| EXPECT_CALL(*session1_, OnConnectionClosed(QUIC_PUBLIC_RESET, true)).Times(1) |
| .WillOnce(WithoutArgs(Invoke( |
| reinterpret_cast<MockServerConnection*>(session1_->connection()), |
| &MockServerConnection::UnregisterOnConnectionClosed))); |
| EXPECT_CALL(*reinterpret_cast<MockConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .WillOnce(Invoke( |
| reinterpret_cast<MockConnection*>(session1_->connection()), |
| &MockConnection::ReallyProcessUdpPacket)); |
| dispatcher_.ProcessPacket(IPEndPoint(), client_address, *encrypted); |
| 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, "foo"); |
| } |
| |
| TEST_F(QuicDispatcherTest, NoVersionPacketToTimeWaitListManager) { |
| CreateTimeWaitListManager(); |
| |
| IPEndPoint client_address(net::test::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, "data"); |
| } |
| |
| // Enables mocking of the handshake-confirmation for stateless rejects. |
| class MockQuicCryptoServerStream : public QuicCryptoServerStream { |
| public: |
| MockQuicCryptoServerStream(const QuicCryptoServerConfig& crypto_config, |
| QuicSession* session) |
| : QuicCryptoServerStream(&crypto_config, session) {} |
| 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 use_stateless_rejects_if_peer_supported, |
| bool client_supports_statelesss_rejects, |
| bool crypto_handshake_successful) |
| : enable_stateless_rejects_via_flag(enable_stateless_rejects_via_flag), |
| use_stateless_rejects_if_peer_supported( |
| use_stateless_rejects_if_peer_supported), |
| 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 << "{ use_stateless_rejects_if_peer_supported: " |
| << p.use_stateless_rejects_if_peer_supported << 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. |
| // It does not force the crypto server to emit stateless rejects. |
| bool enable_stateless_rejects_via_flag; |
| // If true, this forces the server to send a stateless reject when rejecting |
| // messages. This should be a no-op if enable_stateless_rejects_via_flag is |
| // false or the peer does not support them. |
| bool use_stateless_rejects_if_peer_supported; |
| // 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. |
| vector<StatelessRejectTestParams> GetStatelessRejectTestParams() { |
| vector<StatelessRejectTestParams> params; |
| for (bool enable_stateless_rejects_via_flag : {true, false}) { |
| for (bool use_stateless_rejects_if_peer_supported : {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, |
| use_stateless_rejects_if_peer_supported, |
| client_supports_statelesss_rejects, crypto_handshake_successful)); |
| } |
| } |
| } |
| } |
| return params; |
| } |
| |
| class QuicDispatcherStatelessRejectTest |
| : public QuicDispatcherTest, |
| public ::testing::WithParamInterface<StatelessRejectTestParams> { |
| public: |
| QuicDispatcherStatelessRejectTest() : 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 { |
| FLAGS_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().use_stateless_rejects_if_peer_supported && |
| !GetParam().crypto_handshake_successful && |
| GetParam().client_supports_statelesss_rejects; |
| } |
| |
| // Sets up dispatcher_, sesession1_, and crypto_stream1_ based on |
| // the test parameters. |
| QuicServerSession* CreateSessionBasedOnTestParams( |
| QuicConnectionId connection_id, |
| const IPEndPoint& client_address) { |
| CreateSession(&dispatcher_, config_, connection_id, client_address, |
| &session1_); |
| |
| crypto_stream1_ = new MockQuicCryptoServerStream(crypto_config_, session1_); |
| session1_->SetCryptoStream(crypto_stream1_); |
| crypto_stream1_->set_use_stateless_rejects_if_peer_supported( |
| GetParam().use_stateless_rejects_if_peer_supported); |
| crypto_stream1_->set_handshake_confirmed_for_testing( |
| GetParam().crypto_handshake_successful); |
| crypto_stream1_->set_peer_supports_stateless_rejects( |
| GetParam().client_supports_statelesss_rejects); |
| return session1_; |
| } |
| |
| MockQuicCryptoServerStream* crypto_stream1_; |
| }; |
| |
| TEST_F(QuicDispatcherTest, ProcessPacketWithZeroPort) { |
| CreateTimeWaitListManager(); |
| |
| IPEndPoint client_address(net::test::Loopback4(), 0); |
| server_address_ = IPEndPoint(net::test::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, "foo"); |
| } |
| |
| TEST_F(QuicDispatcherTest, OKSeqNoPacketProcessed) { |
| IPEndPoint client_address(net::test::Loopback4(), 1); |
| QuicConnectionId connection_id = 1; |
| server_address_ = IPEndPoint(net::test::Any4(), 5); |
| |
| EXPECT_CALL(dispatcher_, CreateQuicSession(1, _, client_address)) |
| .WillOnce(testing::Return( |
| CreateSession(&dispatcher_, config_, 1, client_address, &session1_))); |
| // A packet whose sequence number is the largest that is allowed to start a |
| // connection. |
| ProcessPacket(client_address, connection_id, true, "data", |
| PACKET_8BYTE_CONNECTION_ID, PACKET_6BYTE_SEQUENCE_NUMBER, |
| QuicDispatcher::kMaxReasonableInitialSequenceNumber); |
| EXPECT_EQ(client_address, dispatcher_.current_client_address()); |
| EXPECT_EQ(server_address_, dispatcher_.current_server_address()); |
| } |
| |
| TEST_F(QuicDispatcherTest, TooBigSeqNoPacketToTimeWaitListManager) { |
| CreateTimeWaitListManager(); |
| |
| IPEndPoint client_address(net::test::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 sequence number is one to large to be allowed to start a |
| // connection. |
| ProcessPacket(client_address, connection_id, true, "data", |
| PACKET_8BYTE_CONNECTION_ID, PACKET_6BYTE_SEQUENCE_NUMBER, |
| QuicDispatcher::kMaxReasonableInitialSequenceNumber + 1); |
| } |
| |
| INSTANTIATE_TEST_CASE_P(QuicDispatcherStatelessRejectTests, |
| QuicDispatcherStatelessRejectTest, |
| ::testing::ValuesIn(GetStatelessRejectTestParams())); |
| |
| // Parameterized test for stateless rejects. Should test all |
| // combinations of enabling/disabling, reject/no-reject for stateless |
| // rejects. |
| TEST_P(QuicDispatcherStatelessRejectTest, ParameterizedBasicTest) { |
| CreateTimeWaitListManager(); |
| |
| IPEndPoint client_address(net::test::Loopback4(), 1); |
| QuicConnectionId connection_id = 1; |
| EXPECT_CALL(dispatcher_, CreateQuicSession(connection_id, _, client_address)) |
| .WillOnce(testing::Return( |
| CreateSessionBasedOnTestParams(connection_id, client_address))); |
| |
| // Process the first packet for the connection. |
| if (ExpectStatelessReject()) { |
| // If this is a stateless reject, we expect the connection to close. |
| EXPECT_CALL(*session1_, OnConnectionClosed(_, _)) |
| .Times(1) |
| .WillOnce(WithoutArgs(Invoke( |
| reinterpret_cast<MockServerConnection*>(session1_->connection()), |
| &MockServerConnection::UnregisterOnConnectionClosed))); |
| } |
| ProcessPacket(client_address, connection_id, true, "foo"); |
| |
| // 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<MockConnection*>(session1_->connection()), |
| ProcessUdpPacket(_, _, _)) |
| .Times(1) |
| .WillOnce(testing::WithArgs<2>( |
| Invoke(this, &QuicDispatcherTest::ValidatePacket))); |
| } |
| ProcessPacket(client_address, connection_id, true, "foo"); |
| } |
| |
| // Verify the stopgap test: Packets with truncated connection IDs should be |
| // dropped. |
| class QuicDispatcherTestStrayPacketConnectionId |
| : public QuicDispatcherTest, |
| public ::testing::WithParamInterface<QuicConnectionIdLength> {}; |
| |
| // Packets with truncated connection IDs should be dropped. |
| TEST_P(QuicDispatcherTestStrayPacketConnectionId, |
| StrayPacketTruncatedConnectionId) { |
| const QuicConnectionIdLength connection_id_length = GetParam(); |
| |
| CreateTimeWaitListManager(); |
| |
| IPEndPoint client_address(net::test::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", |
| connection_id_length, PACKET_6BYTE_SEQUENCE_NUMBER); |
| } |
| |
| INSTANTIATE_TEST_CASE_P(ConnectionIdLength, |
| QuicDispatcherTestStrayPacketConnectionId, |
| ::testing::Values(PACKET_0BYTE_CONNECTION_ID, |
| PACKET_1BYTE_CONNECTION_ID, |
| PACKET_4BYTE_CONNECTION_ID)); |
| |
| 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 IPAddressNumber& self_client_address, |
| const IPEndPoint& peer_client_address) 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. |
| LOG(DFATAL) << "Not supported"; |
| return WriteResult(); |
| } |
| |
| bool write_blocked_; |
| }; |
| |
| class QuicDispatcherWriteBlockedListTest : public QuicDispatcherTest { |
| public: |
| void SetUp() override { |
| writer_ = new BlockingWriter; |
| QuicDispatcherPeer::SetPacketWriterFactory(&dispatcher_, |
| new TestWriterFactory()); |
| QuicDispatcherPeer::UseWriter(&dispatcher_, writer_); |
| |
| IPEndPoint client_address(net::test::Loopback4(), 1); |
| |
| EXPECT_CALL(dispatcher_, CreateQuicSession(_, _, client_address)) |
| .WillOnce(testing::Return(CreateSession(&dispatcher_, config_, 1, |
| client_address, &session1_))); |
| ProcessPacket(client_address, 1, true, "foo"); |
| |
| EXPECT_CALL(dispatcher_, CreateQuicSession(_, _, client_address)) |
| .WillOnce(testing::Return(CreateSession(&dispatcher_, config_, 2, |
| client_address, &session2_))); |
| ProcessPacket(client_address, 2, true, "bar"); |
| |
| blocked_list_ = QuicDispatcherPeer::GetWriteBlockedList(&dispatcher_); |
| } |
| |
| void TearDown() override { |
| EXPECT_CALL(*connection1(), SendConnectionClose(QUIC_PEER_GOING_AWAY)); |
| EXPECT_CALL(*connection2(), SendConnectionClose(QUIC_PEER_GOING_AWAY)); |
| dispatcher_.Shutdown(); |
| } |
| |
| void SetBlocked() { |
| writer_->write_blocked_ = true; |
| } |
| |
| void BlockConnection2() { |
| writer_->write_blocked_ = true; |
| dispatcher_.OnWriteBlocked(connection2()); |
| } |
| |
| protected: |
| 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()); |
| } |
| |
| } // namespace |
| } // namespace test |
| } // namespace tools |
| } // namespace net |
