| // 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/quic/quic_packet_creator.h" |
| |
| #include "base/stl_util.h" |
| #include "net/quic/crypto/null_encrypter.h" |
| #include "net/quic/crypto/quic_decrypter.h" |
| #include "net/quic/crypto/quic_encrypter.h" |
| #include "net/quic/quic_utils.h" |
| #include "net/quic/test_tools/mock_random.h" |
| #include "net/quic/test_tools/quic_framer_peer.h" |
| #include "net/quic/test_tools/quic_packet_creator_peer.h" |
| #include "net/quic/test_tools/quic_test_utils.h" |
| #include "net/test/gtest_util.h" |
| #include "testing/gmock/include/gmock/gmock.h" |
| |
| using base::StringPiece; |
| using std::ostream; |
| using std::string; |
| using std::vector; |
| using testing::DoAll; |
| using testing::InSequence; |
| using testing::Return; |
| using testing::SaveArg; |
| using testing::_; |
| |
| namespace net { |
| namespace test { |
| namespace { |
| |
| // Run tests with combinations of {QuicVersion, ToggleVersionSerialization}. |
| struct TestParams { |
| TestParams(QuicVersion version, |
| bool version_serialization) |
| : version(version), |
| version_serialization(version_serialization) { |
| } |
| |
| friend ostream& operator<<(ostream& os, const TestParams& p) { |
| os << "{ client_version: " << QuicVersionToString(p.version) |
| << " include version: " << p.version_serialization << " }"; |
| return os; |
| } |
| |
| QuicVersion version; |
| bool version_serialization; |
| }; |
| |
| // Constructs various test permutations. |
| vector<TestParams> GetTestParams() { |
| vector<TestParams> params; |
| QuicVersionVector all_supported_versions = QuicSupportedVersions(); |
| for (size_t i = 0; i < all_supported_versions.size(); ++i) { |
| params.push_back(TestParams(all_supported_versions[i], true)); |
| params.push_back(TestParams(all_supported_versions[i], false)); |
| } |
| return params; |
| } |
| |
| class QuicPacketCreatorTest : public ::testing::TestWithParam<TestParams> { |
| protected: |
| QuicPacketCreatorTest() |
| : server_framer_(SupportedVersions(GetParam().version), QuicTime::Zero(), |
| true), |
| client_framer_(SupportedVersions(GetParam().version), QuicTime::Zero(), |
| false), |
| sequence_number_(0), |
| connection_id_(2), |
| data_("foo"), |
| creator_(connection_id_, &client_framer_, &mock_random_) { |
| client_framer_.set_visitor(&framer_visitor_); |
| client_framer_.set_received_entropy_calculator(&entropy_calculator_); |
| server_framer_.set_visitor(&framer_visitor_); |
| } |
| |
| virtual ~QuicPacketCreatorTest() OVERRIDE { |
| } |
| |
| void ProcessPacket(QuicPacket* packet) { |
| scoped_ptr<QuicEncryptedPacket> encrypted( |
| server_framer_.EncryptPacket(ENCRYPTION_NONE, sequence_number_, |
| *packet)); |
| server_framer_.ProcessPacket(*encrypted); |
| } |
| |
| void CheckStreamFrame(const QuicFrame& frame, |
| QuicStreamId stream_id, |
| const string& data, |
| QuicStreamOffset offset, |
| bool fin) { |
| EXPECT_EQ(STREAM_FRAME, frame.type); |
| ASSERT_TRUE(frame.stream_frame); |
| EXPECT_EQ(stream_id, frame.stream_frame->stream_id); |
| scoped_ptr<string> frame_data(frame.stream_frame->GetDataAsString()); |
| EXPECT_EQ(data, *frame_data); |
| EXPECT_EQ(offset, frame.stream_frame->offset); |
| EXPECT_EQ(fin, frame.stream_frame->fin); |
| } |
| |
| // Returns the number of bytes consumed by the header of packet, including |
| // the version. |
| size_t GetPacketHeaderOverhead(InFecGroup is_in_fec_group) { |
| return GetPacketHeaderSize(creator_.connection_id_length(), |
| kIncludeVersion, |
| creator_.next_sequence_number_length(), |
| is_in_fec_group); |
| } |
| |
| // Returns the number of bytes of overhead that will be added to a packet |
| // of maximum length. |
| size_t GetEncryptionOverhead() { |
| return creator_.max_packet_length() - client_framer_.GetMaxPlaintextSize( |
| creator_.max_packet_length()); |
| } |
| |
| // Returns the number of bytes consumed by the non-data fields of a stream |
| // frame, assuming it is the last frame in the packet |
| size_t GetStreamFrameOverhead(InFecGroup is_in_fec_group) { |
| return QuicFramer::GetMinStreamFrameSize(client_framer_.version(), |
| kClientDataStreamId1, kOffset, |
| true, is_in_fec_group); |
| } |
| |
| // Enables and turns on FEC protection. Returns true if FEC protection is on. |
| bool SwitchFecProtectionOn(size_t max_packets_per_fec_group) { |
| creator_.set_max_packets_per_fec_group(max_packets_per_fec_group); |
| creator_.StartFecProtectingPackets(); |
| return creator_.IsFecProtected(); |
| } |
| |
| static const QuicStreamOffset kOffset = 1u; |
| |
| QuicFrames frames_; |
| QuicFramer server_framer_; |
| QuicFramer client_framer_; |
| testing::StrictMock<MockFramerVisitor> framer_visitor_; |
| QuicPacketSequenceNumber sequence_number_; |
| QuicConnectionId connection_id_; |
| string data_; |
| MockRandom mock_random_; |
| QuicPacketCreator creator_; |
| MockEntropyCalculator entropy_calculator_; |
| }; |
| |
| // Run all packet creator tests with all supported versions of QUIC, and with |
| // and without version in the packet header. |
| INSTANTIATE_TEST_CASE_P(QuicPacketCreatorTests, |
| QuicPacketCreatorTest, |
| ::testing::ValuesIn(GetTestParams())); |
| |
| TEST_P(QuicPacketCreatorTest, SerializeFrames) { |
| frames_.push_back(QuicFrame(new QuicAckFrame(MakeAckFrame(0u, 0u)))); |
| frames_.push_back(QuicFrame(new QuicStreamFrame(0u, false, 0u, IOVector()))); |
| frames_.push_back(QuicFrame(new QuicStreamFrame(0u, true, 0u, IOVector()))); |
| SerializedPacket serialized = creator_.SerializeAllFrames(frames_); |
| delete frames_[0].ack_frame; |
| delete frames_[1].stream_frame; |
| delete frames_[2].stream_frame; |
| |
| { |
| InSequence s; |
| EXPECT_CALL(framer_visitor_, OnPacket()); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedPublicHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnDecryptedPacket(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnAckFrame(_)); |
| EXPECT_CALL(framer_visitor_, OnStreamFrame(_)); |
| EXPECT_CALL(framer_visitor_, OnStreamFrame(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketComplete()); |
| } |
| ProcessPacket(serialized.packet); |
| delete serialized.packet; |
| } |
| |
| TEST_P(QuicPacketCreatorTest, SerializeWithFEC) { |
| // Enable FEC protection, and send FEC packet every 6 packets. |
| EXPECT_TRUE(SwitchFecProtectionOn(6)); |
| // Should return false since we do not have enough packets in the FEC group to |
| // trigger an FEC packet. |
| ASSERT_FALSE(creator_.ShouldSendFec(/*force_close=*/false)); |
| |
| frames_.push_back(QuicFrame(new QuicStreamFrame(0u, false, 0u, IOVector()))); |
| SerializedPacket serialized = creator_.SerializeAllFrames(frames_); |
| delete frames_[0].stream_frame; |
| |
| { |
| InSequence s; |
| EXPECT_CALL(framer_visitor_, OnPacket()); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedPublicHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnDecryptedPacket(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnFecProtectedPayload(_)); |
| EXPECT_CALL(framer_visitor_, OnStreamFrame(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketComplete()); |
| } |
| ProcessPacket(serialized.packet); |
| delete serialized.packet; |
| |
| // Should return false since we do not have enough packets in the FEC group to |
| // trigger an FEC packet. |
| ASSERT_FALSE(creator_.ShouldSendFec(/*force_close=*/false)); |
| // Should return true since there are packets in the FEC group. |
| ASSERT_TRUE(creator_.ShouldSendFec(/*force_close=*/true)); |
| |
| serialized = creator_.SerializeFec(); |
| ASSERT_EQ(2u, serialized.sequence_number); |
| { |
| InSequence s; |
| EXPECT_CALL(framer_visitor_, OnPacket()); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedPublicHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnDecryptedPacket(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnFecData(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketComplete()); |
| } |
| ProcessPacket(serialized.packet); |
| delete serialized.packet; |
| } |
| |
| TEST_P(QuicPacketCreatorTest, SerializeChangingSequenceNumberLength) { |
| frames_.push_back(QuicFrame(new QuicAckFrame(MakeAckFrame(0u, 0u)))); |
| creator_.AddSavedFrame(frames_[0]); |
| creator_.set_next_sequence_number_length(PACKET_4BYTE_SEQUENCE_NUMBER); |
| SerializedPacket serialized = creator_.SerializePacket(); |
| // The sequence number length will not change mid-packet. |
| EXPECT_EQ(PACKET_1BYTE_SEQUENCE_NUMBER, serialized.sequence_number_length); |
| |
| { |
| InSequence s; |
| EXPECT_CALL(framer_visitor_, OnPacket()); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedPublicHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnDecryptedPacket(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnAckFrame(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketComplete()); |
| } |
| ProcessPacket(serialized.packet); |
| delete serialized.packet; |
| |
| creator_.AddSavedFrame(frames_[0]); |
| serialized = creator_.SerializePacket(); |
| // Now the actual sequence number length should have changed. |
| EXPECT_EQ(PACKET_4BYTE_SEQUENCE_NUMBER, serialized.sequence_number_length); |
| delete frames_[0].ack_frame; |
| |
| { |
| InSequence s; |
| EXPECT_CALL(framer_visitor_, OnPacket()); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedPublicHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnDecryptedPacket(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnAckFrame(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketComplete()); |
| } |
| ProcessPacket(serialized.packet); |
| delete serialized.packet; |
| } |
| |
| TEST_P(QuicPacketCreatorTest, ChangeSequenceNumberLengthMidPacket) { |
| if (GetParam().version <= QUIC_VERSION_15) { |
| return; |
| } |
| // Changing the sequence number length with queued frames in the creator |
| // should hold the change until after any currently queued frames are |
| // serialized. |
| |
| // Packet 1. |
| // Queue a frame in the creator. |
| EXPECT_FALSE(creator_.HasPendingFrames()); |
| QuicFrame ack_frame = QuicFrame(new QuicAckFrame(MakeAckFrame(0u, 0u))); |
| creator_.AddSavedFrame(ack_frame); |
| |
| // Now change sequence number length. |
| creator_.set_next_sequence_number_length(PACKET_4BYTE_SEQUENCE_NUMBER); |
| |
| // Add a STOP_WAITING frame since it contains a packet sequence number, |
| // whose length should be 1. |
| QuicStopWaitingFrame stop_waiting_frame; |
| EXPECT_TRUE(creator_.AddSavedFrame(QuicFrame(&stop_waiting_frame))); |
| EXPECT_TRUE(creator_.HasPendingFrames()); |
| |
| // Ensure the packet is successfully created. |
| SerializedPacket serialized = creator_.SerializePacket(); |
| ASSERT_TRUE(serialized.packet); |
| EXPECT_EQ(PACKET_1BYTE_SEQUENCE_NUMBER, serialized.sequence_number_length); |
| |
| // Verify that header in transmitted packet has 1 byte sequence length. |
| QuicPacketHeader header; |
| { |
| InSequence s; |
| EXPECT_CALL(framer_visitor_, OnPacket()); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedPublicHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnDecryptedPacket(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketHeader(_)).WillOnce( |
| DoAll(SaveArg<0>(&header), Return(true))); |
| EXPECT_CALL(framer_visitor_, OnAckFrame(_)); |
| EXPECT_CALL(framer_visitor_, OnStopWaitingFrame(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketComplete()); |
| } |
| ProcessPacket(serialized.packet); |
| EXPECT_EQ(PACKET_1BYTE_SEQUENCE_NUMBER, |
| header.public_header.sequence_number_length); |
| delete serialized.packet; |
| |
| // Packet 2. |
| EXPECT_FALSE(creator_.HasPendingFrames()); |
| // Generate Packet 2 with one frame -- sequence number length should now |
| // change to 4 bytes. |
| EXPECT_TRUE(creator_.AddSavedFrame(QuicFrame(&stop_waiting_frame))); |
| EXPECT_TRUE(creator_.HasPendingFrames()); |
| |
| // Ensure the packet is successfully created. |
| serialized = creator_.SerializePacket(); |
| ASSERT_TRUE(serialized.packet); |
| EXPECT_EQ(PACKET_4BYTE_SEQUENCE_NUMBER, serialized.sequence_number_length); |
| |
| // Verify that header in transmitted packet has 4 byte sequence length. |
| { |
| InSequence s; |
| EXPECT_CALL(framer_visitor_, OnPacket()); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedPublicHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnDecryptedPacket(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketHeader(_)).WillOnce( |
| DoAll(SaveArg<0>(&header), Return(true))); |
| EXPECT_CALL(framer_visitor_, OnStopWaitingFrame(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketComplete()); |
| } |
| ProcessPacket(serialized.packet); |
| EXPECT_EQ(PACKET_4BYTE_SEQUENCE_NUMBER, |
| header.public_header.sequence_number_length); |
| |
| delete serialized.packet; |
| delete ack_frame.ack_frame; |
| } |
| |
| TEST_P(QuicPacketCreatorTest, SerializeWithFECChangingSequenceNumberLength) { |
| // Test goal is to test the following sequence (P1 => generate Packet 1): |
| // P1 <change seq num length> P2 FEC, |
| // and we expect that sequence number length should not change until the end |
| // of the open FEC group. |
| |
| // Enable FEC protection, and send FEC packet every 6 packets. |
| EXPECT_TRUE(SwitchFecProtectionOn(6)); |
| // Should return false since we do not have enough packets in the FEC group to |
| // trigger an FEC packet. |
| ASSERT_FALSE(creator_.ShouldSendFec(/*force_close=*/false)); |
| frames_.push_back(QuicFrame(new QuicAckFrame(MakeAckFrame(0u, 0u)))); |
| |
| // Generate Packet 1. |
| creator_.AddSavedFrame(frames_[0]); |
| // Change the sequence number length mid-FEC group and it should not change. |
| creator_.set_next_sequence_number_length(PACKET_4BYTE_SEQUENCE_NUMBER); |
| SerializedPacket serialized = creator_.SerializePacket(); |
| EXPECT_EQ(PACKET_1BYTE_SEQUENCE_NUMBER, serialized.sequence_number_length); |
| |
| { |
| InSequence s; |
| EXPECT_CALL(framer_visitor_, OnPacket()); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedPublicHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnDecryptedPacket(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnFecProtectedPayload(_)); |
| EXPECT_CALL(framer_visitor_, OnAckFrame(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketComplete()); |
| } |
| ProcessPacket(serialized.packet); |
| delete serialized.packet; |
| |
| // Generate Packet 2. |
| creator_.AddSavedFrame(frames_[0]); |
| serialized = creator_.SerializePacket(); |
| EXPECT_EQ(PACKET_1BYTE_SEQUENCE_NUMBER, serialized.sequence_number_length); |
| |
| { |
| InSequence s; |
| EXPECT_CALL(framer_visitor_, OnPacket()); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedPublicHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnDecryptedPacket(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnFecProtectedPayload(_)); |
| EXPECT_CALL(framer_visitor_, OnAckFrame(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketComplete()); |
| } |
| ProcessPacket(serialized.packet); |
| delete serialized.packet; |
| |
| // Should return false since we do not have enough packets in the FEC group to |
| // trigger an FEC packet. |
| ASSERT_FALSE(creator_.ShouldSendFec(/*force_close=*/false)); |
| // Should return true since there are packets in the FEC group. |
| ASSERT_TRUE(creator_.ShouldSendFec(/*force_close=*/true)); |
| |
| // Force generation of FEC packet. |
| serialized = creator_.SerializeFec(); |
| EXPECT_EQ(PACKET_1BYTE_SEQUENCE_NUMBER, serialized.sequence_number_length); |
| ASSERT_EQ(3u, serialized.sequence_number); |
| |
| { |
| InSequence s; |
| EXPECT_CALL(framer_visitor_, OnPacket()); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedPublicHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnDecryptedPacket(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnFecData(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketComplete()); |
| } |
| ProcessPacket(serialized.packet); |
| delete serialized.packet; |
| |
| // Ensure the next FEC group starts using the new sequence number length. |
| serialized = creator_.SerializeAllFrames(frames_); |
| EXPECT_EQ(PACKET_4BYTE_SEQUENCE_NUMBER, serialized.sequence_number_length); |
| delete frames_[0].ack_frame; |
| delete serialized.packet; |
| } |
| |
| TEST_P(QuicPacketCreatorTest, ReserializeFramesWithSequenceNumberLength) { |
| // If the original packet sequence number length, the current sequence number |
| // length, and the configured send sequence number length are different, the |
| // retransmit must sent with the original length and the others do not change. |
| creator_.set_next_sequence_number_length(PACKET_4BYTE_SEQUENCE_NUMBER); |
| QuicPacketCreatorPeer::SetSequenceNumberLength(&creator_, |
| PACKET_2BYTE_SEQUENCE_NUMBER); |
| frames_.push_back(QuicFrame(new QuicStreamFrame(0u, false, 0u, IOVector()))); |
| SerializedPacket serialized = |
| creator_.ReserializeAllFrames(frames_, PACKET_1BYTE_SEQUENCE_NUMBER); |
| EXPECT_EQ(PACKET_4BYTE_SEQUENCE_NUMBER, |
| creator_.next_sequence_number_length()); |
| EXPECT_EQ(PACKET_2BYTE_SEQUENCE_NUMBER, |
| QuicPacketCreatorPeer::GetSequenceNumberLength(&creator_)); |
| EXPECT_EQ(PACKET_1BYTE_SEQUENCE_NUMBER, serialized.sequence_number_length); |
| delete frames_[0].stream_frame; |
| |
| { |
| InSequence s; |
| EXPECT_CALL(framer_visitor_, OnPacket()); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedPublicHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnDecryptedPacket(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnStreamFrame(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketComplete()); |
| } |
| ProcessPacket(serialized.packet); |
| delete serialized.packet; |
| } |
| |
| TEST_P(QuicPacketCreatorTest, SerializeConnectionClose) { |
| QuicConnectionCloseFrame frame; |
| frame.error_code = QUIC_NO_ERROR; |
| frame.error_details = "error"; |
| |
| SerializedPacket serialized = creator_.SerializeConnectionClose(&frame); |
| ASSERT_EQ(1u, serialized.sequence_number); |
| ASSERT_EQ(1u, creator_.sequence_number()); |
| |
| InSequence s; |
| EXPECT_CALL(framer_visitor_, OnPacket()); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedPublicHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnDecryptedPacket(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnConnectionCloseFrame(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketComplete()); |
| |
| ProcessPacket(serialized.packet); |
| delete serialized.packet; |
| } |
| |
| TEST_P(QuicPacketCreatorTest, SwitchFecOnOffWithNoGroup) { |
| // Enable FEC protection. |
| creator_.set_max_packets_per_fec_group(6); |
| EXPECT_TRUE(creator_.IsFecEnabled()); |
| EXPECT_FALSE(creator_.IsFecProtected()); |
| |
| // Turn on FEC protection. |
| creator_.StartFecProtectingPackets(); |
| EXPECT_TRUE(creator_.IsFecProtected()); |
| // We have no packets in the FEC group, so no FEC packet can be created. |
| EXPECT_FALSE(creator_.ShouldSendFec(/*force_close=*/true)); |
| // Since no packets are in FEC group yet, we should be able to turn FEC |
| // off with no trouble. |
| creator_.StopFecProtectingPackets(); |
| EXPECT_FALSE(creator_.IsFecProtected()); |
| } |
| |
| TEST_P(QuicPacketCreatorTest, SwitchFecOnOffWithGroupInProgress) { |
| // Enable FEC protection, and send FEC packet every 6 packets. |
| EXPECT_TRUE(SwitchFecProtectionOn(6)); |
| frames_.push_back(QuicFrame(new QuicStreamFrame(0u, false, 0u, IOVector()))); |
| SerializedPacket serialized = creator_.SerializeAllFrames(frames_); |
| delete frames_[0].stream_frame; |
| delete serialized.packet; |
| |
| EXPECT_TRUE(creator_.IsFecProtected()); |
| // We do not have enough packets in the FEC group to trigger an FEC packet. |
| EXPECT_FALSE(creator_.ShouldSendFec(/*force_close=*/false)); |
| // Should return true since there are packets in the FEC group. |
| EXPECT_TRUE(creator_.ShouldSendFec(/*force_close=*/true)); |
| |
| // Switching FEC off should not change creator state, since there is an |
| // FEC packet under construction. |
| EXPECT_DFATAL(creator_.StopFecProtectingPackets(), |
| "Cannot stop FEC protection with open FEC group."); |
| EXPECT_TRUE(creator_.IsFecProtected()); |
| // Confirm that FEC packet is still under construction. |
| EXPECT_TRUE(creator_.ShouldSendFec(/*force_close=*/true)); |
| |
| serialized = creator_.SerializeFec(); |
| delete serialized.packet; |
| |
| // Switching FEC on/off should work now. |
| creator_.StopFecProtectingPackets(); |
| EXPECT_FALSE(creator_.IsFecProtected()); |
| creator_.StartFecProtectingPackets(); |
| EXPECT_TRUE(creator_.IsFecProtected()); |
| } |
| |
| TEST_P(QuicPacketCreatorTest, SwitchFecOnWithStreamFrameQueued) { |
| // Add a stream frame to the creator. |
| QuicFrame frame; |
| size_t consumed = creator_.CreateStreamFrame( |
| 1u, MakeIOVector("test"), 0u, false, &frame); |
| EXPECT_EQ(4u, consumed); |
| ASSERT_TRUE(frame.stream_frame); |
| EXPECT_TRUE(creator_.AddSavedFrame(frame)); |
| EXPECT_TRUE(creator_.HasPendingFrames()); |
| |
| // Enable FEC protection, and send FEC packet every 6 packets. |
| creator_.set_max_packets_per_fec_group(6); |
| EXPECT_TRUE(creator_.IsFecEnabled()); |
| EXPECT_DFATAL(creator_.StartFecProtectingPackets(), |
| "Cannot start FEC protection with pending frames."); |
| EXPECT_FALSE(creator_.IsFecProtected()); |
| |
| // Serialize packet for transmission. |
| SerializedPacket serialized = creator_.SerializePacket(); |
| delete serialized.packet; |
| delete serialized.retransmittable_frames; |
| EXPECT_FALSE(creator_.HasPendingFrames()); |
| |
| // Since all pending frames have been serialized, turning FEC on should work. |
| creator_.StartFecProtectingPackets(); |
| EXPECT_TRUE(creator_.IsFecProtected()); |
| } |
| |
| TEST_P(QuicPacketCreatorTest, CreateStreamFrame) { |
| QuicFrame frame; |
| size_t consumed = creator_.CreateStreamFrame(1u, MakeIOVector("test"), 0u, |
| false, &frame); |
| EXPECT_EQ(4u, consumed); |
| CheckStreamFrame(frame, 1u, "test", 0u, false); |
| delete frame.stream_frame; |
| } |
| |
| TEST_P(QuicPacketCreatorTest, CreateStreamFrameFin) { |
| QuicFrame frame; |
| size_t consumed = creator_.CreateStreamFrame(1u, MakeIOVector("test"), 10u, |
| true, &frame); |
| EXPECT_EQ(4u, consumed); |
| CheckStreamFrame(frame, 1u, "test", 10u, true); |
| delete frame.stream_frame; |
| } |
| |
| TEST_P(QuicPacketCreatorTest, CreateStreamFrameFinOnly) { |
| QuicFrame frame; |
| size_t consumed = creator_.CreateStreamFrame(1u, IOVector(), 0u, true, |
| &frame); |
| EXPECT_EQ(0u, consumed); |
| CheckStreamFrame(frame, 1u, string(), 0u, true); |
| delete frame.stream_frame; |
| } |
| |
| TEST_P(QuicPacketCreatorTest, CreateAllFreeBytesForStreamFrames) { |
| const size_t overhead = GetPacketHeaderOverhead(NOT_IN_FEC_GROUP) |
| + GetEncryptionOverhead(); |
| for (size_t i = overhead; i < overhead + 100; ++i) { |
| creator_.set_max_packet_length(i); |
| const bool should_have_room = i > overhead + GetStreamFrameOverhead( |
| NOT_IN_FEC_GROUP); |
| ASSERT_EQ(should_have_room, creator_.HasRoomForStreamFrame( |
| kClientDataStreamId1, kOffset)); |
| if (should_have_room) { |
| QuicFrame frame; |
| size_t bytes_consumed = creator_.CreateStreamFrame( |
| kClientDataStreamId1, MakeIOVector("testdata"), kOffset, false, |
| &frame); |
| EXPECT_LT(0u, bytes_consumed); |
| ASSERT_TRUE(creator_.AddSavedFrame(frame)); |
| SerializedPacket serialized_packet = creator_.SerializePacket(); |
| ASSERT_TRUE(serialized_packet.packet); |
| delete serialized_packet.packet; |
| delete serialized_packet.retransmittable_frames; |
| } |
| } |
| } |
| |
| TEST_P(QuicPacketCreatorTest, StreamFrameConsumption) { |
| // Compute the total overhead for a single frame in packet. |
| const size_t overhead = GetPacketHeaderOverhead(NOT_IN_FEC_GROUP) |
| + GetEncryptionOverhead() + GetStreamFrameOverhead(NOT_IN_FEC_GROUP); |
| size_t capacity = kDefaultMaxPacketSize - overhead; |
| // Now, test various sizes around this size. |
| for (int delta = -5; delta <= 5; ++delta) { |
| string data(capacity + delta, 'A'); |
| size_t bytes_free = delta > 0 ? 0 : 0 - delta; |
| QuicFrame frame; |
| size_t bytes_consumed = creator_.CreateStreamFrame( |
| kClientDataStreamId1, MakeIOVector(data), kOffset, false, &frame); |
| EXPECT_EQ(capacity - bytes_free, bytes_consumed); |
| |
| ASSERT_TRUE(creator_.AddSavedFrame(frame)); |
| // BytesFree() returns bytes available for the next frame, which will |
| // be two bytes smaller since the stream frame would need to be grown. |
| EXPECT_EQ(2u, creator_.ExpansionOnNewFrame()); |
| size_t expected_bytes_free = bytes_free < 3 ? 0 : bytes_free - 2; |
| EXPECT_EQ(expected_bytes_free, creator_.BytesFree()) << "delta: " << delta; |
| SerializedPacket serialized_packet = creator_.SerializePacket(); |
| ASSERT_TRUE(serialized_packet.packet); |
| delete serialized_packet.packet; |
| delete serialized_packet.retransmittable_frames; |
| } |
| } |
| |
| TEST_P(QuicPacketCreatorTest, StreamFrameConsumptionWithFec) { |
| // Enable FEC protection, and send FEC packet every 6 packets. |
| EXPECT_TRUE(SwitchFecProtectionOn(6)); |
| // Compute the total overhead for a single frame in packet. |
| const size_t overhead = GetPacketHeaderOverhead(IN_FEC_GROUP) |
| + GetEncryptionOverhead() + GetStreamFrameOverhead(IN_FEC_GROUP); |
| size_t capacity = kDefaultMaxPacketSize - overhead; |
| // Now, test various sizes around this size. |
| for (int delta = -5; delta <= 5; ++delta) { |
| string data(capacity + delta, 'A'); |
| size_t bytes_free = delta > 0 ? 0 : 0 - delta; |
| QuicFrame frame; |
| size_t bytes_consumed = creator_.CreateStreamFrame( |
| kClientDataStreamId1, MakeIOVector(data), kOffset, false, &frame); |
| EXPECT_EQ(capacity - bytes_free, bytes_consumed); |
| |
| ASSERT_TRUE(creator_.AddSavedFrame(frame)); |
| // BytesFree() returns bytes available for the next frame. Since stream |
| // frame does not grow for FEC protected packets, this should be the same |
| // as bytes_free (bound by 0). |
| EXPECT_EQ(0u, creator_.ExpansionOnNewFrame()); |
| size_t expected_bytes_free = bytes_free > 0 ? bytes_free : 0; |
| EXPECT_EQ(expected_bytes_free, creator_.BytesFree()) << "delta: " << delta; |
| SerializedPacket serialized_packet = creator_.SerializePacket(); |
| ASSERT_TRUE(serialized_packet.packet); |
| delete serialized_packet.packet; |
| delete serialized_packet.retransmittable_frames; |
| } |
| } |
| |
| TEST_P(QuicPacketCreatorTest, CryptoStreamFramePacketPadding) { |
| // Compute the total overhead for a single frame in packet. |
| const size_t overhead = GetPacketHeaderOverhead(NOT_IN_FEC_GROUP) |
| + GetEncryptionOverhead() + GetStreamFrameOverhead(NOT_IN_FEC_GROUP); |
| ASSERT_GT(kMaxPacketSize, overhead); |
| size_t capacity = kDefaultMaxPacketSize - overhead; |
| // Now, test various sizes around this size. |
| for (int delta = -5; delta <= 5; ++delta) { |
| string data(capacity + delta, 'A'); |
| size_t bytes_free = delta > 0 ? 0 : 0 - delta; |
| |
| QuicFrame frame; |
| size_t bytes_consumed = creator_.CreateStreamFrame( |
| kCryptoStreamId, MakeIOVector(data), kOffset, false, &frame); |
| EXPECT_LT(0u, bytes_consumed); |
| ASSERT_TRUE(creator_.AddSavedFrame(frame)); |
| SerializedPacket serialized_packet = creator_.SerializePacket(); |
| ASSERT_TRUE(serialized_packet.packet); |
| // If there is not enough space in the packet to fit a padding frame |
| // (1 byte) and to expand the stream frame (another 2 bytes) the packet |
| // will not be padded. |
| if (bytes_free < 3) { |
| EXPECT_EQ(client_framer_.GetMaxPlaintextSize(kDefaultMaxPacketSize) |
| - bytes_free, serialized_packet.packet->length()); |
| } else { |
| EXPECT_EQ(client_framer_.GetMaxPlaintextSize(kDefaultMaxPacketSize), |
| serialized_packet.packet->length()); |
| } |
| delete serialized_packet.packet; |
| delete serialized_packet.retransmittable_frames; |
| } |
| } |
| |
| TEST_P(QuicPacketCreatorTest, NonCryptoStreamFramePacketNonPadding) { |
| // Compute the total overhead for a single frame in packet. |
| const size_t overhead = GetPacketHeaderOverhead(NOT_IN_FEC_GROUP) |
| + GetEncryptionOverhead() + GetStreamFrameOverhead(NOT_IN_FEC_GROUP); |
| ASSERT_GT(kDefaultMaxPacketSize, overhead); |
| size_t capacity = kDefaultMaxPacketSize - overhead; |
| // Now, test various sizes around this size. |
| for (int delta = -5; delta <= 5; ++delta) { |
| string data(capacity + delta, 'A'); |
| size_t bytes_free = delta > 0 ? 0 : 0 - delta; |
| |
| QuicFrame frame; |
| size_t bytes_consumed = creator_.CreateStreamFrame( |
| kClientDataStreamId1, MakeIOVector(data), kOffset, false, &frame); |
| EXPECT_LT(0u, bytes_consumed); |
| ASSERT_TRUE(creator_.AddSavedFrame(frame)); |
| SerializedPacket serialized_packet = creator_.SerializePacket(); |
| ASSERT_TRUE(serialized_packet.packet); |
| if (bytes_free > 0) { |
| EXPECT_EQ(client_framer_.GetMaxPlaintextSize(kDefaultMaxPacketSize) |
| - bytes_free, serialized_packet.packet->length()); |
| } else { |
| EXPECT_EQ(client_framer_.GetMaxPlaintextSize(kDefaultMaxPacketSize), |
| serialized_packet.packet->length()); |
| } |
| delete serialized_packet.packet; |
| delete serialized_packet.retransmittable_frames; |
| } |
| } |
| |
| TEST_P(QuicPacketCreatorTest, SerializeVersionNegotiationPacket) { |
| QuicFramerPeer::SetIsServer(&client_framer_, true); |
| QuicVersionVector versions; |
| versions.push_back(test::QuicVersionMax()); |
| scoped_ptr<QuicEncryptedPacket> encrypted( |
| creator_.SerializeVersionNegotiationPacket(versions)); |
| |
| { |
| InSequence s; |
| EXPECT_CALL(framer_visitor_, OnPacket()); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedPublicHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnVersionNegotiationPacket(_)); |
| } |
| QuicFramerPeer::SetIsServer(&client_framer_, false); |
| client_framer_.ProcessPacket(*encrypted); |
| } |
| |
| TEST_P(QuicPacketCreatorTest, UpdatePacketSequenceNumberLengthLeastAwaiting) { |
| EXPECT_EQ(PACKET_1BYTE_SEQUENCE_NUMBER, |
| creator_.next_sequence_number_length()); |
| |
| creator_.set_sequence_number(64); |
| creator_.UpdateSequenceNumberLength(2, 10000); |
| EXPECT_EQ(PACKET_1BYTE_SEQUENCE_NUMBER, |
| creator_.next_sequence_number_length()); |
| |
| creator_.set_sequence_number(64 * 256); |
| creator_.UpdateSequenceNumberLength(2, 10000); |
| EXPECT_EQ(PACKET_2BYTE_SEQUENCE_NUMBER, |
| creator_.next_sequence_number_length()); |
| |
| creator_.set_sequence_number(64 * 256 * 256); |
| creator_.UpdateSequenceNumberLength(2, 10000); |
| EXPECT_EQ(PACKET_4BYTE_SEQUENCE_NUMBER, |
| creator_.next_sequence_number_length()); |
| |
| creator_.set_sequence_number(GG_UINT64_C(64) * 256 * 256 * 256 * 256); |
| creator_.UpdateSequenceNumberLength(2, 10000); |
| EXPECT_EQ(PACKET_6BYTE_SEQUENCE_NUMBER, |
| creator_.next_sequence_number_length()); |
| } |
| |
| TEST_P(QuicPacketCreatorTest, UpdatePacketSequenceNumberLengthBandwidth) { |
| EXPECT_EQ(PACKET_1BYTE_SEQUENCE_NUMBER, |
| creator_.next_sequence_number_length()); |
| |
| creator_.UpdateSequenceNumberLength(1, 10000); |
| EXPECT_EQ(PACKET_1BYTE_SEQUENCE_NUMBER, |
| creator_.next_sequence_number_length()); |
| |
| creator_.UpdateSequenceNumberLength(1, 10000 * 256); |
| EXPECT_EQ(PACKET_2BYTE_SEQUENCE_NUMBER, |
| creator_.next_sequence_number_length()); |
| |
| creator_.UpdateSequenceNumberLength(1, 10000 * 256 * 256); |
| EXPECT_EQ(PACKET_4BYTE_SEQUENCE_NUMBER, |
| creator_.next_sequence_number_length()); |
| |
| creator_.UpdateSequenceNumberLength( |
| 1, GG_UINT64_C(1000) * 256 * 256 * 256 * 256); |
| EXPECT_EQ(PACKET_6BYTE_SEQUENCE_NUMBER, |
| creator_.next_sequence_number_length()); |
| } |
| |
| TEST_P(QuicPacketCreatorTest, CreateStreamFrameWithNotifier) { |
| // Ensure that if CreateStreamFrame does not consume any data (e.g. a FIN only |
| // frame) then any QuicAckNotifier that is passed in still gets attached to |
| // the frame. |
| scoped_refptr<MockAckNotifierDelegate> delegate(new MockAckNotifierDelegate); |
| QuicAckNotifier notifier(delegate.get()); |
| QuicFrame frame; |
| IOVector empty_iovector; |
| bool fin = true; |
| size_t consumed_bytes = creator_.CreateStreamFrameWithNotifier( |
| 1u, empty_iovector, 0u, fin, ¬ifier, &frame); |
| EXPECT_EQ(0u, consumed_bytes); |
| EXPECT_EQ(¬ifier, frame.stream_frame->notifier); |
| delete frame.stream_frame; |
| } |
| |
| TEST_P(QuicPacketCreatorTest, SerializeFrame) { |
| if (!GetParam().version_serialization) { |
| creator_.StopSendingVersion(); |
| } |
| frames_.push_back(QuicFrame(new QuicStreamFrame(0u, false, 0u, IOVector()))); |
| SerializedPacket serialized = creator_.SerializeAllFrames(frames_); |
| delete frames_[0].stream_frame; |
| |
| QuicPacketHeader header; |
| { |
| InSequence s; |
| EXPECT_CALL(framer_visitor_, OnPacket()); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedPublicHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnUnauthenticatedHeader(_)); |
| EXPECT_CALL(framer_visitor_, OnDecryptedPacket(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketHeader(_)).WillOnce( |
| DoAll(SaveArg<0>(&header), Return(true))); |
| EXPECT_CALL(framer_visitor_, OnStreamFrame(_)); |
| EXPECT_CALL(framer_visitor_, OnPacketComplete()); |
| } |
| ProcessPacket(serialized.packet); |
| EXPECT_EQ(GetParam().version_serialization, |
| header.public_header.version_flag); |
| delete serialized.packet; |
| } |
| |
| TEST_P(QuicPacketCreatorTest, CreateStreamFrameTooLarge) { |
| if (!GetParam().version_serialization) { |
| creator_.StopSendingVersion(); |
| } |
| // A string larger than fits into a frame. |
| size_t payload_length; |
| creator_.set_max_packet_length(GetPacketLengthForOneStream( |
| client_framer_.version(), |
| QuicPacketCreatorPeer::SendVersionInPacket(&creator_), |
| PACKET_1BYTE_SEQUENCE_NUMBER, NOT_IN_FEC_GROUP, &payload_length)); |
| QuicFrame frame; |
| const string too_long_payload(payload_length * 2, 'a'); |
| size_t consumed = creator_.CreateStreamFrame( |
| 1u, MakeIOVector(too_long_payload), 0u, true, &frame); |
| EXPECT_EQ(payload_length, consumed); |
| const string payload(payload_length, 'a'); |
| CheckStreamFrame(frame, 1u, payload, 0u, false); |
| delete frame.stream_frame; |
| } |
| |
| TEST_P(QuicPacketCreatorTest, AddFrameAndSerialize) { |
| if (!GetParam().version_serialization) { |
| creator_.StopSendingVersion(); |
| } |
| const size_t max_plaintext_size = |
| client_framer_.GetMaxPlaintextSize(creator_.max_packet_length()); |
| EXPECT_FALSE(creator_.HasPendingFrames()); |
| EXPECT_EQ(max_plaintext_size - |
| GetPacketHeaderSize( |
| creator_.connection_id_length(), |
| QuicPacketCreatorPeer::SendVersionInPacket(&creator_), |
| PACKET_1BYTE_SEQUENCE_NUMBER, NOT_IN_FEC_GROUP), |
| creator_.BytesFree()); |
| |
| // Add a variety of frame types and then a padding frame. |
| QuicAckFrame ack_frame(MakeAckFrame(0u, 0u)); |
| EXPECT_TRUE(creator_.AddSavedFrame(QuicFrame(&ack_frame))); |
| EXPECT_TRUE(creator_.HasPendingFrames()); |
| |
| QuicCongestionFeedbackFrame congestion_feedback; |
| congestion_feedback.type = kFixRate; |
| EXPECT_TRUE(creator_.AddSavedFrame(QuicFrame(&congestion_feedback))); |
| EXPECT_TRUE(creator_.HasPendingFrames()); |
| |
| QuicFrame frame; |
| size_t consumed = creator_.CreateStreamFrame( |
| 1u, MakeIOVector("test"), 0u, false, &frame); |
| EXPECT_EQ(4u, consumed); |
| ASSERT_TRUE(frame.stream_frame); |
| EXPECT_TRUE(creator_.AddSavedFrame(frame)); |
| EXPECT_TRUE(creator_.HasPendingFrames()); |
| |
| QuicPaddingFrame padding_frame; |
| EXPECT_TRUE(creator_.AddSavedFrame(QuicFrame(&padding_frame))); |
| EXPECT_TRUE(creator_.HasPendingFrames()); |
| EXPECT_EQ(0u, creator_.BytesFree()); |
| |
| EXPECT_FALSE(creator_.AddSavedFrame(QuicFrame(&ack_frame))); |
| |
| // Ensure the packet is successfully created. |
| SerializedPacket serialized = creator_.SerializePacket(); |
| ASSERT_TRUE(serialized.packet); |
| delete serialized.packet; |
| ASSERT_TRUE(serialized.retransmittable_frames); |
| RetransmittableFrames* retransmittable = serialized.retransmittable_frames; |
| ASSERT_EQ(1u, retransmittable->frames().size()); |
| EXPECT_EQ(STREAM_FRAME, retransmittable->frames()[0].type); |
| ASSERT_TRUE(retransmittable->frames()[0].stream_frame); |
| delete serialized.retransmittable_frames; |
| |
| EXPECT_FALSE(creator_.HasPendingFrames()); |
| EXPECT_EQ(max_plaintext_size - |
| GetPacketHeaderSize( |
| creator_.connection_id_length(), |
| QuicPacketCreatorPeer::SendVersionInPacket(&creator_), |
| PACKET_1BYTE_SEQUENCE_NUMBER, |
| NOT_IN_FEC_GROUP), |
| creator_.BytesFree()); |
| } |
| |
| TEST_P(QuicPacketCreatorTest, SerializeTruncatedAckFrameWithLargePacketSize) { |
| if (!GetParam().version_serialization) { |
| creator_.StopSendingVersion(); |
| } |
| creator_.set_max_packet_length(kMaxPacketSize); |
| const size_t max_plaintext_size = |
| client_framer_.GetMaxPlaintextSize(creator_.max_packet_length()); |
| |
| // Serialized length of ack frame with 2000 nack ranges should be limited by |
| // the number of nack ranges that can be fit in an ack frame. |
| QuicAckFrame ack_frame = MakeAckFrameWithNackRanges(2000u, 0u); |
| size_t frame_len = client_framer_.GetSerializedFrameLength( |
| QuicFrame(&ack_frame), creator_.BytesFree(), true, true, |
| NOT_IN_FEC_GROUP, PACKET_1BYTE_SEQUENCE_NUMBER); |
| EXPECT_GT(creator_.BytesFree(), frame_len); |
| EXPECT_GT(max_plaintext_size, creator_.PacketSize()); |
| |
| // Add ack frame to creator. |
| EXPECT_TRUE(creator_.AddSavedFrame(QuicFrame(&ack_frame))); |
| EXPECT_TRUE(creator_.HasPendingFrames()); |
| EXPECT_GT(max_plaintext_size, creator_.PacketSize()); |
| EXPECT_LT(0u, creator_.BytesFree()); |
| |
| // Make sure that an additional stream frame can be added to the packet. |
| QuicFrame stream_frame; |
| size_t consumed = creator_.CreateStreamFrame( |
| 2u, MakeIOVector("test"), 0u, false, &stream_frame); |
| EXPECT_EQ(4u, consumed); |
| ASSERT_TRUE(stream_frame.stream_frame); |
| EXPECT_TRUE(creator_.AddSavedFrame(stream_frame)); |
| EXPECT_TRUE(creator_.HasPendingFrames()); |
| |
| // Ensure the packet is successfully created, and the packet size estimate |
| // matches the serialized packet length. |
| EXPECT_CALL(entropy_calculator_, |
| EntropyHash(_)).WillOnce(testing::Return(0)); |
| size_t est_packet_size = creator_.PacketSize(); |
| SerializedPacket serialized = creator_.SerializePacket(); |
| ASSERT_TRUE(serialized.packet); |
| EXPECT_EQ(est_packet_size, serialized.packet->length()); |
| delete serialized.retransmittable_frames; |
| delete serialized.packet; |
| } |
| |
| TEST_P(QuicPacketCreatorTest, SerializeTruncatedAckFrameWithSmallPacketSize) { |
| if (!GetParam().version_serialization) { |
| creator_.StopSendingVersion(); |
| } |
| creator_.set_max_packet_length(500u); |
| |
| const size_t max_plaintext_size = |
| client_framer_.GetMaxPlaintextSize(creator_.max_packet_length()); |
| EXPECT_EQ(max_plaintext_size - creator_.PacketSize(), creator_.BytesFree()); |
| |
| // Serialized length of ack frame with 2000 nack ranges should be limited by |
| // the packet size. |
| QuicAckFrame ack_frame = MakeAckFrameWithNackRanges(2000u, 0u); |
| size_t frame_len = client_framer_.GetSerializedFrameLength( |
| QuicFrame(&ack_frame), creator_.BytesFree(), true, true, |
| NOT_IN_FEC_GROUP, PACKET_1BYTE_SEQUENCE_NUMBER); |
| EXPECT_EQ(creator_.BytesFree(), frame_len); |
| |
| // Add ack frame to creator. |
| EXPECT_TRUE(creator_.AddSavedFrame(QuicFrame(&ack_frame))); |
| EXPECT_TRUE(creator_.HasPendingFrames()); |
| EXPECT_EQ(max_plaintext_size, creator_.PacketSize()); |
| EXPECT_EQ(0u, creator_.BytesFree()); |
| |
| // Ensure the packet is successfully created, and the packet size estimate |
| // may not match the serialized packet length. |
| EXPECT_CALL(entropy_calculator_, |
| EntropyHash(_)).WillOnce(Return(0)); |
| size_t est_packet_size = creator_.PacketSize(); |
| SerializedPacket serialized = creator_.SerializePacket(); |
| ASSERT_TRUE(serialized.packet); |
| EXPECT_GE(est_packet_size, serialized.packet->length()); |
| delete serialized.packet; |
| } |
| |
| |
| TEST_P(QuicPacketCreatorTest, EntropyFlag) { |
| frames_.push_back(QuicFrame(new QuicStreamFrame(0u, false, 0u, IOVector()))); |
| |
| for (int i = 0; i < 2; ++i) { |
| for (int j = 0; j < 64; ++j) { |
| SerializedPacket serialized = creator_.SerializeAllFrames(frames_); |
| // Verify both BoolSource and hash algorithm. |
| bool expected_rand_bool = |
| (mock_random_.RandUint64() & (GG_UINT64_C(1) << j)) != 0; |
| bool observed_rand_bool = |
| (serialized.entropy_hash & (1 << ((j+1) % 8))) != 0; |
| uint8 rest_of_hash = serialized.entropy_hash & ~(1 << ((j+1) % 8)); |
| EXPECT_EQ(expected_rand_bool, observed_rand_bool); |
| EXPECT_EQ(0, rest_of_hash); |
| delete serialized.packet; |
| } |
| // After 64 calls, BoolSource will refresh the bucket - make sure it does. |
| mock_random_.ChangeValue(); |
| } |
| |
| delete frames_[0].stream_frame; |
| } |
| |
| } // namespace |
| } // namespace test |
| } // namespace net |