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// 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/third_party/quiche/src/quic/core/quic_stream.h"
#include <memory>
#include <string>
#include "net/third_party/quiche/src/quic/core/quic_connection.h"
#include "net/third_party/quiche/src/quic/core/quic_utils.h"
#include "net/third_party/quiche/src/quic/core/quic_versions.h"
#include "net/third_party/quiche/src/quic/core/quic_write_blocked_list.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_arraysize.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_expect_bug.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_flags.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_logging.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_mem_slice_storage.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_ptr_util.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_test.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_test_mem_slice_vector.h"
#include "net/third_party/quiche/src/quic/test_tools/quic_config_peer.h"
#include "net/third_party/quiche/src/quic/test_tools/quic_connection_peer.h"
#include "net/third_party/quiche/src/quic/test_tools/quic_flow_controller_peer.h"
#include "net/third_party/quiche/src/quic/test_tools/quic_session_peer.h"
#include "net/third_party/quiche/src/quic/test_tools/quic_stream_peer.h"
#include "net/third_party/quiche/src/quic/test_tools/quic_stream_sequencer_peer.h"
#include "net/third_party/quiche/src/quic/test_tools/quic_test_utils.h"
using testing::_;
using testing::AnyNumber;
using testing::AtLeast;
using testing::InSequence;
using testing::Invoke;
using testing::InvokeWithoutArgs;
using testing::Return;
using testing::StrictMock;
namespace quic {
namespace test {
namespace {
const char kData1[] = "FooAndBar";
const char kData2[] = "EepAndBaz";
const size_t kDataLen = 9;
class TestStream : public QuicStream {
public:
TestStream(QuicStreamId id, QuicSession* session, StreamType type)
: QuicStream(id, session, /*is_static=*/false, type) {}
TestStream(PendingStream pending, StreamType type, bool is_static)
: QuicStream(std::move(pending), type, is_static) {}
void OnDataAvailable() override {}
MOCK_METHOD0(OnCanWriteNewData, void());
using QuicStream::CanWriteNewData;
using QuicStream::CanWriteNewDataAfterData;
using QuicStream::CloseWriteSide;
using QuicStream::fin_buffered;
using QuicStream::OnClose;
using QuicStream::WriteMemSlices;
using QuicStream::WriteOrBufferData;
using QuicStream::WritevData;
private:
std::string data_;
};
class QuicStreamTestBase : public QuicTestWithParam<ParsedQuicVersion> {
public:
QuicStreamTestBase()
: initial_flow_control_window_bytes_(kMaxOutgoingPacketSize),
zero_(QuicTime::Delta::Zero()),
supported_versions_(AllSupportedVersions()) {}
void Initialize() {
ParsedQuicVersionVector version_vector;
version_vector.push_back(GetParam());
connection_ = new StrictMock<MockQuicConnection>(
&helper_, &alarm_factory_, Perspective::IS_SERVER, version_vector);
connection_->AdvanceTime(QuicTime::Delta::FromSeconds(1));
session_ = QuicMakeUnique<StrictMock<MockQuicSession>>(connection_);
// New streams rely on having the peer's flow control receive window
// negotiated in the config.
QuicConfigPeer::SetReceivedInitialStreamFlowControlWindow(
session_->config(), initial_flow_control_window_bytes_);
stream_ = new TestStream(kTestStreamId, session_.get(), BIDIRECTIONAL);
EXPECT_NE(nullptr, stream_);
// session_ now owns stream_.
session_->ActivateStream(QuicWrapUnique(stream_));
// Ignore resetting when session_ is terminated.
EXPECT_CALL(*session_, SendRstStream(kTestStreamId, _, _))
.Times(AnyNumber());
write_blocked_list_ =
QuicSessionPeer::GetWriteBlockedStreams(session_.get());
}
bool fin_sent() { return stream_->fin_sent(); }
bool rst_sent() { return stream_->rst_sent(); }
void set_initial_flow_control_window_bytes(uint32_t val) {
initial_flow_control_window_bytes_ = val;
}
bool HasWriteBlockedStreams() {
return write_blocked_list_->HasWriteBlockedSpecialStream() ||
write_blocked_list_->HasWriteBlockedDataStreams();
}
QuicConsumedData CloseStreamOnWriteError(QuicStream* /*stream*/,
QuicStreamId id,
size_t /*write_length*/,
QuicStreamOffset /*offset*/,
StreamSendingState /*state*/) {
session_->CloseStream(id);
return QuicConsumedData(1, false);
}
bool ClearControlFrame(const QuicFrame& frame) {
DeleteFrame(&const_cast<QuicFrame&>(frame));
return true;
}
bool ClearResetStreamFrame(const QuicFrame& frame) {
EXPECT_EQ(RST_STREAM_FRAME, frame.type);
DeleteFrame(&const_cast<QuicFrame&>(frame));
return true;
}
bool ClearStopSendingFrame(const QuicFrame& frame) {
EXPECT_EQ(STOP_SENDING_FRAME, frame.type);
DeleteFrame(&const_cast<QuicFrame&>(frame));
return true;
}
protected:
MockQuicConnectionHelper helper_;
MockAlarmFactory alarm_factory_;
MockQuicConnection* connection_;
std::unique_ptr<MockQuicSession> session_;
TestStream* stream_;
QuicWriteBlockedList* write_blocked_list_;
uint32_t initial_flow_control_window_bytes_;
QuicTime::Delta zero_;
ParsedQuicVersionVector supported_versions_;
const QuicStreamId kTestStreamId =
QuicUtils::GetHeadersStreamId(GetParam().transport_version) +
QuicUtils::StreamIdDelta(GetParam().transport_version);
};
// Non parameterized QuicStreamTest used for tests that do not
// have any dependencies on the quic version.
class QuicStreamTest : public QuicStreamTestBase {};
// Index value of 1 has the test run with supported-version[1], which is some
// version OTHER than 99.
INSTANTIATE_TEST_SUITE_P(
QuicStreamTests,
QuicStreamTest,
::testing::ValuesIn(ParsedVersionOfIndex(AllSupportedVersions(), 1)));
// Make a parameterized version of the QuicStreamTest for those tests
// that need to differentiate based on version number.
class QuicParameterizedStreamTest : public QuicStreamTestBase {};
INSTANTIATE_TEST_SUITE_P(QuicParameterizedStreamTests,
QuicParameterizedStreamTest,
::testing::ValuesIn(AllSupportedVersions()));
TEST_P(QuicStreamTest, PendingStreamStaticness) {
Initialize();
PendingStream pending(kTestStreamId + 2, session_.get());
TestStream stream(std::move(pending), StreamType::BIDIRECTIONAL, false);
EXPECT_FALSE(stream.is_static());
PendingStream pending2(kTestStreamId + 3, session_.get());
TestStream stream2(std::move(pending2), StreamType::BIDIRECTIONAL, true);
EXPECT_TRUE(stream2.is_static());
}
TEST_P(QuicStreamTest, PendingStreamTooMuchData) {
Initialize();
PendingStream pending(kTestStreamId + 2, session_.get());
// Receive a stream frame that violates flow control: the byte offset is
// higher than the receive window offset.
QuicStreamFrame frame(kTestStreamId + 2, false,
kInitialSessionFlowControlWindowForTest + 1,
QuicStringPiece("."));
// Stream should not accept the frame, and the connection should be closed.
EXPECT_CALL(*connection_,
CloseConnection(QUIC_FLOW_CONTROL_RECEIVED_TOO_MUCH_DATA, _, _));
pending.OnStreamFrame(frame);
}
TEST_P(QuicStreamTest, PendingStreamTooMuchDataInRstStream) {
Initialize();
PendingStream pending(kTestStreamId + 2, session_.get());
// Receive a rst stream frame that violates flow control: the byte offset is
// higher than the receive window offset.
QuicRstStreamFrame frame(kInvalidControlFrameId, kTestStreamId + 2,
QUIC_STREAM_CANCELLED,
kInitialSessionFlowControlWindowForTest + 1);
// Pending stream should not accept the frame, and the connection should be
// closed.
EXPECT_CALL(*connection_,
CloseConnection(QUIC_FLOW_CONTROL_RECEIVED_TOO_MUCH_DATA, _, _));
pending.OnRstStreamFrame(frame);
}
TEST_P(QuicStreamTest, PendingStreamRstStream) {
Initialize();
PendingStream pending(kTestStreamId + 2, session_.get());
QuicStreamOffset final_byte_offset = 7;
QuicRstStreamFrame frame(kInvalidControlFrameId, kTestStreamId + 2,
QUIC_STREAM_CANCELLED, final_byte_offset);
// Pending stream should accept the frame and not close the connection.
EXPECT_CALL(*connection_, CloseConnection(_, _, _)).Times(0);
pending.OnRstStreamFrame(frame);
}
TEST_P(QuicStreamTest, FromPendingStream) {
Initialize();
PendingStream pending(kTestStreamId + 2, session_.get());
QuicStreamFrame frame(kTestStreamId + 2, false, 2, QuicStringPiece("."));
pending.OnStreamFrame(frame);
pending.OnStreamFrame(frame);
QuicStreamFrame frame2(kTestStreamId + 2, true, 3, QuicStringPiece("."));
pending.OnStreamFrame(frame2);
TestStream stream(std::move(pending), StreamType::READ_UNIDIRECTIONAL, false);
EXPECT_EQ(3, stream.num_frames_received());
EXPECT_EQ(3u, stream.stream_bytes_read());
EXPECT_EQ(1, stream.num_duplicate_frames_received());
EXPECT_EQ(true, stream.fin_received());
EXPECT_EQ(frame2.offset + 1,
stream.flow_controller()->highest_received_byte_offset());
EXPECT_EQ(frame2.offset + 1,
session_->flow_controller()->highest_received_byte_offset());
}
TEST_P(QuicStreamTest, FromPendingStreamThenData) {
Initialize();
PendingStream pending(kTestStreamId + 2, session_.get());
QuicStreamFrame frame(kTestStreamId + 2, false, 2, QuicStringPiece("."));
pending.OnStreamFrame(frame);
auto stream = new TestStream(std::move(pending),
StreamType::READ_UNIDIRECTIONAL, false);
session_->ActivateStream(QuicWrapUnique(stream));
QuicStreamFrame frame2(kTestStreamId + 2, true, 3, QuicStringPiece("."));
stream->OnStreamFrame(frame2);
EXPECT_EQ(2, stream->num_frames_received());
EXPECT_EQ(2u, stream->stream_bytes_read());
EXPECT_EQ(true, stream->fin_received());
EXPECT_EQ(frame2.offset + 1,
stream->flow_controller()->highest_received_byte_offset());
EXPECT_EQ(frame2.offset + 1,
session_->flow_controller()->highest_received_byte_offset());
}
TEST_P(QuicStreamTest, WriteAllData) {
Initialize();
size_t length =
1 + QuicPacketCreator::StreamFramePacketOverhead(
connection_->transport_version(), PACKET_8BYTE_CONNECTION_ID,
PACKET_0BYTE_CONNECTION_ID, !kIncludeVersion,
!kIncludeDiversificationNonce, PACKET_4BYTE_PACKET_NUMBER,
VARIABLE_LENGTH_INTEGER_LENGTH_0,
VARIABLE_LENGTH_INTEGER_LENGTH_0, 0u);
connection_->SetMaxPacketLength(length);
EXPECT_CALL(*session_, WritevData(stream_, kTestStreamId, _, _, _))
.WillOnce(Invoke(&(MockQuicSession::ConsumeData)));
stream_->WriteOrBufferData(kData1, false, nullptr);
EXPECT_FALSE(HasWriteBlockedStreams());
}
TEST_P(QuicStreamTest, NoBlockingIfNoDataOrFin) {
Initialize();
// Write no data and no fin. If we consume nothing we should not be write
// blocked.
EXPECT_QUIC_BUG(stream_->WriteOrBufferData(QuicStringPiece(), false, nullptr),
"");
EXPECT_FALSE(HasWriteBlockedStreams());
}
TEST_P(QuicStreamTest, BlockIfOnlySomeDataConsumed) {
Initialize();
// Write some data and no fin. If we consume some but not all of the data,
// we should be write blocked a not all the data was consumed.
EXPECT_CALL(*session_, WritevData(stream_, kTestStreamId, _, _, _))
.WillOnce(InvokeWithoutArgs([this]() {
return MockQuicSession::ConsumeData(stream_, stream_->id(), 1u, 0u,
NO_FIN);
}));
stream_->WriteOrBufferData(QuicStringPiece(kData1, 2), false, nullptr);
ASSERT_EQ(1u, write_blocked_list_->NumBlockedStreams());
EXPECT_EQ(1u, stream_->BufferedDataBytes());
}
TEST_P(QuicStreamTest, BlockIfFinNotConsumedWithData) {
Initialize();
// Write some data and no fin. If we consume all the data but not the fin,
// we should be write blocked because the fin was not consumed.
// (This should never actually happen as the fin should be sent out with the
// last data)
EXPECT_CALL(*session_, WritevData(stream_, kTestStreamId, _, _, _))
.WillOnce(InvokeWithoutArgs([this]() {
return MockQuicSession::ConsumeData(stream_, stream_->id(), 2u, 0u,
NO_FIN);
}));
stream_->WriteOrBufferData(QuicStringPiece(kData1, 2), true, nullptr);
ASSERT_EQ(1u, write_blocked_list_->NumBlockedStreams());
}
TEST_P(QuicStreamTest, BlockIfSoloFinNotConsumed) {
Initialize();
// Write no data and a fin. If we consume nothing we should be write blocked,
// as the fin was not consumed.
EXPECT_CALL(*session_, WritevData(stream_, kTestStreamId, _, _, _))
.WillOnce(Return(QuicConsumedData(0, false)));
stream_->WriteOrBufferData(QuicStringPiece(), true, nullptr);
ASSERT_EQ(1u, write_blocked_list_->NumBlockedStreams());
}
TEST_P(QuicStreamTest, CloseOnPartialWrite) {
Initialize();
// Write some data and no fin. However, while writing the data
// close the stream and verify that MarkConnectionLevelWriteBlocked does not
// crash with an unknown stream.
EXPECT_CALL(*session_, WritevData(stream_, kTestStreamId, _, _, _))
.WillOnce(Invoke(this, &QuicStreamTest::CloseStreamOnWriteError));
stream_->WriteOrBufferData(QuicStringPiece(kData1, 2), false, nullptr);
ASSERT_EQ(0u, write_blocked_list_->NumBlockedStreams());
}
TEST_P(QuicStreamTest, WriteOrBufferData) {
Initialize();
EXPECT_FALSE(HasWriteBlockedStreams());
size_t length =
1 + QuicPacketCreator::StreamFramePacketOverhead(
connection_->transport_version(), PACKET_8BYTE_CONNECTION_ID,
PACKET_0BYTE_CONNECTION_ID, !kIncludeVersion,
!kIncludeDiversificationNonce, PACKET_4BYTE_PACKET_NUMBER,
VARIABLE_LENGTH_INTEGER_LENGTH_0,
VARIABLE_LENGTH_INTEGER_LENGTH_0, 0u);
connection_->SetMaxPacketLength(length);
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillOnce(InvokeWithoutArgs([this]() {
return MockQuicSession::ConsumeData(stream_, stream_->id(),
kDataLen - 1, 0u, NO_FIN);
}));
stream_->WriteOrBufferData(kData1, false, nullptr);
EXPECT_EQ(1u, stream_->BufferedDataBytes());
EXPECT_TRUE(HasWriteBlockedStreams());
// Queue a bytes_consumed write.
stream_->WriteOrBufferData(kData2, false, nullptr);
EXPECT_EQ(10u, stream_->BufferedDataBytes());
// Make sure we get the tail of the first write followed by the bytes_consumed
InSequence s;
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillOnce(InvokeWithoutArgs([this]() {
return MockQuicSession::ConsumeData(stream_, stream_->id(),
kDataLen - 1, kDataLen - 1, NO_FIN);
}));
stream_->OnCanWrite();
// And finally the end of the bytes_consumed.
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillOnce(InvokeWithoutArgs([this]() {
return MockQuicSession::ConsumeData(stream_, stream_->id(), 2u,
2 * kDataLen - 2, NO_FIN);
}));
stream_->OnCanWrite();
}
TEST_P(QuicStreamTest, WriteOrBufferDataReachStreamLimit) {
Initialize();
std::string data("aaaaa");
QuicStreamPeer::SetStreamBytesWritten(kMaxStreamLength - data.length(),
stream_);
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillOnce(Invoke(&(MockQuicSession::ConsumeData)));
stream_->WriteOrBufferData(data, false, nullptr);
EXPECT_CALL(*connection_, CloseConnection(QUIC_STREAM_LENGTH_OVERFLOW, _, _));
EXPECT_QUIC_BUG(stream_->WriteOrBufferData("a", false, nullptr),
"Write too many data via stream");
}
TEST_P(QuicStreamTest, ConnectionCloseAfterStreamClose) {
Initialize();
QuicStreamPeer::CloseReadSide(stream_);
stream_->CloseWriteSide();
EXPECT_EQ(QUIC_STREAM_NO_ERROR, stream_->stream_error());
EXPECT_EQ(QUIC_NO_ERROR, stream_->connection_error());
stream_->OnConnectionClosed(QUIC_INTERNAL_ERROR,
ConnectionCloseSource::FROM_SELF);
EXPECT_EQ(QUIC_STREAM_NO_ERROR, stream_->stream_error());
EXPECT_EQ(QUIC_NO_ERROR, stream_->connection_error());
}
TEST_P(QuicStreamTest, RstAlwaysSentIfNoFinSent) {
// For flow control accounting, a stream must send either a FIN or a RST frame
// before termination.
// Test that if no FIN has been sent, we send a RST.
Initialize();
EXPECT_FALSE(fin_sent());
EXPECT_FALSE(rst_sent());
// Write some data, with no FIN.
EXPECT_CALL(*session_, WritevData(stream_, kTestStreamId, _, _, _))
.WillOnce(InvokeWithoutArgs([this]() {
return MockQuicSession::ConsumeData(stream_, stream_->id(), 1u, 0u,
NO_FIN);
}));
stream_->WriteOrBufferData(QuicStringPiece(kData1, 1), false, nullptr);
EXPECT_FALSE(fin_sent());
EXPECT_FALSE(rst_sent());
// Now close the stream, and expect that we send a RST.
EXPECT_CALL(*session_, SendRstStream(_, _, _));
stream_->OnClose();
EXPECT_FALSE(fin_sent());
EXPECT_TRUE(rst_sent());
}
TEST_P(QuicStreamTest, RstNotSentIfFinSent) {
// For flow control accounting, a stream must send either a FIN or a RST frame
// before termination.
// Test that if a FIN has been sent, we don't also send a RST.
Initialize();
EXPECT_FALSE(fin_sent());
EXPECT_FALSE(rst_sent());
// Write some data, with FIN.
EXPECT_CALL(*session_, WritevData(stream_, kTestStreamId, _, _, _))
.WillOnce(InvokeWithoutArgs([this]() {
return MockQuicSession::ConsumeData(stream_, stream_->id(), 1u, 0u,
FIN);
}));
stream_->WriteOrBufferData(QuicStringPiece(kData1, 1), true, nullptr);
EXPECT_TRUE(fin_sent());
EXPECT_FALSE(rst_sent());
// Now close the stream, and expect that we do not send a RST.
stream_->OnClose();
EXPECT_TRUE(fin_sent());
EXPECT_FALSE(rst_sent());
}
TEST_P(QuicStreamTest, OnlySendOneRst) {
// For flow control accounting, a stream must send either a FIN or a RST frame
// before termination.
// Test that if a stream sends a RST, it doesn't send an additional RST during
// OnClose() (this shouldn't be harmful, but we shouldn't do it anyway...)
Initialize();
EXPECT_FALSE(fin_sent());
EXPECT_FALSE(rst_sent());
// Reset the stream.
const int expected_resets = 1;
EXPECT_CALL(*session_, SendRstStream(_, _, _)).Times(expected_resets);
stream_->Reset(QUIC_STREAM_CANCELLED);
EXPECT_FALSE(fin_sent());
EXPECT_TRUE(rst_sent());
// Now close the stream (any further resets being sent would break the
// expectation above).
stream_->OnClose();
EXPECT_FALSE(fin_sent());
EXPECT_TRUE(rst_sent());
}
TEST_P(QuicStreamTest, StreamFlowControlMultipleWindowUpdates) {
set_initial_flow_control_window_bytes(1000);
Initialize();
// If we receive multiple WINDOW_UPDATES (potentially out of order), then we
// want to make sure we latch the largest offset we see.
// Initially should be default.
EXPECT_EQ(
initial_flow_control_window_bytes_,
QuicFlowControllerPeer::SendWindowOffset(stream_->flow_controller()));
// Check a single WINDOW_UPDATE results in correct offset.
QuicWindowUpdateFrame window_update_1(kInvalidControlFrameId, stream_->id(),
1234);
stream_->OnWindowUpdateFrame(window_update_1);
EXPECT_EQ(
window_update_1.byte_offset,
QuicFlowControllerPeer::SendWindowOffset(stream_->flow_controller()));
// Now send a few more WINDOW_UPDATES and make sure that only the largest is
// remembered.
QuicWindowUpdateFrame window_update_2(kInvalidControlFrameId, stream_->id(),
1);
QuicWindowUpdateFrame window_update_3(kInvalidControlFrameId, stream_->id(),
9999);
QuicWindowUpdateFrame window_update_4(kInvalidControlFrameId, stream_->id(),
5678);
stream_->OnWindowUpdateFrame(window_update_2);
stream_->OnWindowUpdateFrame(window_update_3);
stream_->OnWindowUpdateFrame(window_update_4);
EXPECT_EQ(
window_update_3.byte_offset,
QuicFlowControllerPeer::SendWindowOffset(stream_->flow_controller()));
}
TEST_P(QuicStreamTest, FrameStats) {
Initialize();
EXPECT_EQ(0, stream_->num_frames_received());
EXPECT_EQ(0, stream_->num_duplicate_frames_received());
QuicStreamFrame frame(stream_->id(), false, 0, QuicStringPiece("."));
stream_->OnStreamFrame(frame);
EXPECT_EQ(1, stream_->num_frames_received());
EXPECT_EQ(0, stream_->num_duplicate_frames_received());
stream_->OnStreamFrame(frame);
EXPECT_EQ(2, stream_->num_frames_received());
EXPECT_EQ(1, stream_->num_duplicate_frames_received());
}
// Verify that when we receive a packet which violates flow control (i.e. sends
// too much data on the stream) that the stream sequencer never sees this frame,
// as we check for violation and close the connection early.
TEST_P(QuicStreamTest, StreamSequencerNeverSeesPacketsViolatingFlowControl) {
Initialize();
// Receive a stream frame that violates flow control: the byte offset is
// higher than the receive window offset.
QuicStreamFrame frame(stream_->id(), false,
kInitialSessionFlowControlWindowForTest + 1,
QuicStringPiece("."));
EXPECT_GT(frame.offset, QuicFlowControllerPeer::ReceiveWindowOffset(
stream_->flow_controller()));
// Stream should not accept the frame, and the connection should be closed.
EXPECT_CALL(*connection_,
CloseConnection(QUIC_FLOW_CONTROL_RECEIVED_TOO_MUCH_DATA, _, _));
stream_->OnStreamFrame(frame);
}
// Verify that after the consumer calls StopReading(), the stream still sends
// flow control updates.
TEST_P(QuicStreamTest, StopReadingSendsFlowControl) {
Initialize();
stream_->StopReading();
// Connection should not get terminated due to flow control errors.
EXPECT_CALL(*connection_,
CloseConnection(QUIC_FLOW_CONTROL_RECEIVED_TOO_MUCH_DATA, _, _))
.Times(0);
EXPECT_CALL(*connection_, SendControlFrame(_))
.Times(AtLeast(1))
.WillRepeatedly(Invoke(this, &QuicStreamTest::ClearControlFrame));
std::string data(1000, 'x');
for (QuicStreamOffset offset = 0;
offset < 2 * kInitialStreamFlowControlWindowForTest;
offset += data.length()) {
QuicStreamFrame frame(stream_->id(), false, offset, data);
stream_->OnStreamFrame(frame);
}
EXPECT_LT(
kInitialStreamFlowControlWindowForTest,
QuicFlowControllerPeer::ReceiveWindowOffset(stream_->flow_controller()));
}
TEST_P(QuicStreamTest, FinalByteOffsetFromFin) {
Initialize();
EXPECT_FALSE(stream_->HasFinalReceivedByteOffset());
QuicStreamFrame stream_frame_no_fin(stream_->id(), false, 1234,
QuicStringPiece("."));
stream_->OnStreamFrame(stream_frame_no_fin);
EXPECT_FALSE(stream_->HasFinalReceivedByteOffset());
QuicStreamFrame stream_frame_with_fin(stream_->id(), true, 1234,
QuicStringPiece("."));
stream_->OnStreamFrame(stream_frame_with_fin);
EXPECT_TRUE(stream_->HasFinalReceivedByteOffset());
}
TEST_P(QuicStreamTest, FinalByteOffsetFromRst) {
Initialize();
EXPECT_FALSE(stream_->HasFinalReceivedByteOffset());
QuicRstStreamFrame rst_frame(kInvalidControlFrameId, stream_->id(),
QUIC_STREAM_CANCELLED, 1234);
stream_->OnStreamReset(rst_frame);
EXPECT_TRUE(stream_->HasFinalReceivedByteOffset());
}
TEST_P(QuicStreamTest, InvalidFinalByteOffsetFromRst) {
Initialize();
EXPECT_FALSE(stream_->HasFinalReceivedByteOffset());
QuicRstStreamFrame rst_frame(kInvalidControlFrameId, stream_->id(),
QUIC_STREAM_CANCELLED, 0xFFFFFFFFFFFF);
// Stream should not accept the frame, and the connection should be closed.
EXPECT_CALL(*connection_,
CloseConnection(QUIC_FLOW_CONTROL_RECEIVED_TOO_MUCH_DATA, _, _));
stream_->OnStreamReset(rst_frame);
EXPECT_TRUE(stream_->HasFinalReceivedByteOffset());
stream_->OnClose();
}
TEST_P(QuicStreamTest, FinalByteOffsetFromZeroLengthStreamFrame) {
// When receiving Trailers, an empty stream frame is created with the FIN set,
// and is passed to OnStreamFrame. The Trailers may be sent in advance of
// queued body bytes being sent, and thus the final byte offset may exceed
// current flow control limits. Flow control should only be concerned with
// data that has actually been sent/received, so verify that flow control
// ignores such a stream frame.
Initialize();
EXPECT_FALSE(stream_->HasFinalReceivedByteOffset());
const QuicStreamOffset kByteOffsetExceedingFlowControlWindow =
kInitialSessionFlowControlWindowForTest + 1;
const QuicStreamOffset current_stream_flow_control_offset =
QuicFlowControllerPeer::ReceiveWindowOffset(stream_->flow_controller());
const QuicStreamOffset current_connection_flow_control_offset =
QuicFlowControllerPeer::ReceiveWindowOffset(session_->flow_controller());
ASSERT_GT(kByteOffsetExceedingFlowControlWindow,
current_stream_flow_control_offset);
ASSERT_GT(kByteOffsetExceedingFlowControlWindow,
current_connection_flow_control_offset);
QuicStreamFrame zero_length_stream_frame_with_fin(
stream_->id(), /*fin=*/true, kByteOffsetExceedingFlowControlWindow,
QuicStringPiece());
EXPECT_EQ(0, zero_length_stream_frame_with_fin.data_length);
EXPECT_CALL(*connection_, CloseConnection(_, _, _)).Times(0);
stream_->OnStreamFrame(zero_length_stream_frame_with_fin);
EXPECT_TRUE(stream_->HasFinalReceivedByteOffset());
// The flow control receive offset values should not have changed.
EXPECT_EQ(
current_stream_flow_control_offset,
QuicFlowControllerPeer::ReceiveWindowOffset(stream_->flow_controller()));
EXPECT_EQ(
current_connection_flow_control_offset,
QuicFlowControllerPeer::ReceiveWindowOffset(session_->flow_controller()));
}
TEST_P(QuicStreamTest, OnStreamResetOffsetOverflow) {
Initialize();
QuicRstStreamFrame rst_frame(kInvalidControlFrameId, stream_->id(),
QUIC_STREAM_CANCELLED, kMaxStreamLength + 1);
EXPECT_CALL(*connection_, CloseConnection(QUIC_STREAM_LENGTH_OVERFLOW, _, _));
stream_->OnStreamReset(rst_frame);
}
TEST_P(QuicStreamTest, OnStreamFrameUpperLimit) {
Initialize();
// Modify receive window offset and sequencer buffer total_bytes_read_ to
// avoid flow control violation.
QuicFlowControllerPeer::SetReceiveWindowOffset(stream_->flow_controller(),
kMaxStreamLength + 5u);
QuicFlowControllerPeer::SetReceiveWindowOffset(session_->flow_controller(),
kMaxStreamLength + 5u);
QuicStreamSequencerPeer::SetFrameBufferTotalBytesRead(
QuicStreamPeer::sequencer(stream_), kMaxStreamLength - 10u);
EXPECT_CALL(*connection_, CloseConnection(QUIC_STREAM_LENGTH_OVERFLOW, _, _))
.Times(0);
QuicStreamFrame stream_frame(stream_->id(), false, kMaxStreamLength - 1,
QuicStringPiece("."));
stream_->OnStreamFrame(stream_frame);
QuicStreamFrame stream_frame2(stream_->id(), true, kMaxStreamLength,
QuicStringPiece(""));
stream_->OnStreamFrame(stream_frame2);
}
TEST_P(QuicStreamTest, StreamTooLong) {
Initialize();
EXPECT_CALL(*connection_, CloseConnection(QUIC_STREAM_LENGTH_OVERFLOW, _, _))
.Times(1);
QuicStreamFrame stream_frame(stream_->id(), false, kMaxStreamLength,
QuicStringPiece("."));
EXPECT_QUIC_PEER_BUG(stream_->OnStreamFrame(stream_frame),
QuicStrCat("Receive stream frame on stream ",
stream_->id(), " reaches max stream length"));
}
TEST_P(QuicParameterizedStreamTest, SetDrainingIncomingOutgoing) {
// Don't have incoming data consumed.
Initialize();
// Incoming data with FIN.
QuicStreamFrame stream_frame_with_fin(stream_->id(), true, 1234,
QuicStringPiece("."));
stream_->OnStreamFrame(stream_frame_with_fin);
// The FIN has been received but not consumed.
EXPECT_TRUE(stream_->HasFinalReceivedByteOffset());
EXPECT_FALSE(QuicStreamPeer::read_side_closed(stream_));
EXPECT_FALSE(stream_->reading_stopped());
EXPECT_EQ(1u, session_->GetNumOpenIncomingStreams());
// Outgoing data with FIN.
EXPECT_CALL(*session_, WritevData(stream_, kTestStreamId, _, _, _))
.WillOnce(InvokeWithoutArgs([this]() {
return MockQuicSession::ConsumeData(stream_, stream_->id(), 2u, 0u,
FIN);
}));
stream_->WriteOrBufferData(QuicStringPiece(kData1, 2), true, nullptr);
EXPECT_TRUE(stream_->write_side_closed());
EXPECT_EQ(1u, QuicSessionPeer::GetDrainingStreams(session_.get())
->count(kTestStreamId));
EXPECT_EQ(0u, session_->GetNumOpenIncomingStreams());
}
TEST_P(QuicParameterizedStreamTest, SetDrainingOutgoingIncoming) {
// Don't have incoming data consumed.
Initialize();
// Outgoing data with FIN.
EXPECT_CALL(*session_, WritevData(stream_, kTestStreamId, _, _, _))
.WillOnce(InvokeWithoutArgs([this]() {
return MockQuicSession::ConsumeData(stream_, stream_->id(), 2u, 0u,
FIN);
}));
stream_->WriteOrBufferData(QuicStringPiece(kData1, 2), true, nullptr);
EXPECT_TRUE(stream_->write_side_closed());
EXPECT_EQ(1u, session_->GetNumOpenIncomingStreams());
// Incoming data with FIN.
QuicStreamFrame stream_frame_with_fin(stream_->id(), true, 1234,
QuicStringPiece("."));
stream_->OnStreamFrame(stream_frame_with_fin);
// The FIN has been received but not consumed.
EXPECT_TRUE(stream_->HasFinalReceivedByteOffset());
EXPECT_FALSE(QuicStreamPeer::read_side_closed(stream_));
EXPECT_FALSE(stream_->reading_stopped());
EXPECT_EQ(1u, QuicSessionPeer::GetDrainingStreams(session_.get())
->count(kTestStreamId));
EXPECT_EQ(0u, session_->GetNumOpenIncomingStreams());
}
TEST_P(QuicStreamTest, EarlyResponseFinHandling) {
// Verify that if the server completes the response before reading the end of
// the request, the received FIN is recorded.
Initialize();
EXPECT_CALL(*connection_, CloseConnection(_, _, _)).Times(0);
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillRepeatedly(Invoke(MockQuicSession::ConsumeData));
// Receive data for the request.
QuicStreamFrame frame1(stream_->id(), false, 0, QuicStringPiece("Start"));
stream_->OnStreamFrame(frame1);
// When QuicSimpleServerStream sends the response, it calls
// QuicStream::CloseReadSide() first.
QuicStreamPeer::CloseReadSide(stream_);
// Send data and FIN for the response.
stream_->WriteOrBufferData(kData1, false, nullptr);
EXPECT_TRUE(QuicStreamPeer::read_side_closed(stream_));
// Receive remaining data and FIN for the request.
QuicStreamFrame frame2(stream_->id(), true, 0, QuicStringPiece("End"));
stream_->OnStreamFrame(frame2);
EXPECT_TRUE(stream_->fin_received());
EXPECT_TRUE(stream_->HasFinalReceivedByteOffset());
}
TEST_P(QuicStreamTest, StreamWaitsForAcks) {
Initialize();
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillRepeatedly(Invoke(MockQuicSession::ConsumeData));
// Stream is not waiting for acks initially.
EXPECT_FALSE(stream_->IsWaitingForAcks());
EXPECT_EQ(0u, QuicStreamPeer::SendBuffer(stream_).size());
// Send kData1.
stream_->WriteOrBufferData(kData1, false, nullptr);
EXPECT_EQ(1u, QuicStreamPeer::SendBuffer(stream_).size());
EXPECT_TRUE(stream_->IsWaitingForAcks());
QuicByteCount newly_acked_length = 0;
EXPECT_TRUE(stream_->OnStreamFrameAcked(0, 9, false, QuicTime::Delta::Zero(),
&newly_acked_length));
EXPECT_EQ(9u, newly_acked_length);
// Stream is not waiting for acks as all sent data is acked.
EXPECT_FALSE(stream_->IsWaitingForAcks());
EXPECT_EQ(0u, QuicStreamPeer::SendBuffer(stream_).size());
// Send kData2.
stream_->WriteOrBufferData(kData2, false, nullptr);
EXPECT_TRUE(stream_->IsWaitingForAcks());
EXPECT_EQ(1u, QuicStreamPeer::SendBuffer(stream_).size());
// Send FIN.
stream_->WriteOrBufferData("", true, nullptr);
// Fin only frame is not stored in send buffer.
EXPECT_EQ(1u, QuicStreamPeer::SendBuffer(stream_).size());
// kData2 is retransmitted.
stream_->OnStreamFrameRetransmitted(9, 9, false);
// kData2 is acked.
EXPECT_TRUE(stream_->OnStreamFrameAcked(9, 9, false, QuicTime::Delta::Zero(),
&newly_acked_length));
EXPECT_EQ(9u, newly_acked_length);
// Stream is waiting for acks as FIN is not acked.
EXPECT_TRUE(stream_->IsWaitingForAcks());
EXPECT_EQ(0u, QuicStreamPeer::SendBuffer(stream_).size());
// FIN is acked.
EXPECT_TRUE(stream_->OnStreamFrameAcked(18, 0, true, QuicTime::Delta::Zero(),
&newly_acked_length));
EXPECT_EQ(0u, newly_acked_length);
EXPECT_FALSE(stream_->IsWaitingForAcks());
EXPECT_EQ(0u, QuicStreamPeer::SendBuffer(stream_).size());
}
TEST_P(QuicStreamTest, StreamDataGetAckedOutOfOrder) {
Initialize();
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillRepeatedly(Invoke(MockQuicSession::ConsumeData));
// Send data.
stream_->WriteOrBufferData(kData1, false, nullptr);
stream_->WriteOrBufferData(kData1, false, nullptr);
stream_->WriteOrBufferData(kData1, false, nullptr);
stream_->WriteOrBufferData("", true, nullptr);
EXPECT_EQ(3u, QuicStreamPeer::SendBuffer(stream_).size());
EXPECT_TRUE(stream_->IsWaitingForAcks());
QuicByteCount newly_acked_length = 0;
EXPECT_TRUE(stream_->OnStreamFrameAcked(9, 9, false, QuicTime::Delta::Zero(),
&newly_acked_length));
EXPECT_EQ(9u, newly_acked_length);
EXPECT_EQ(3u, QuicStreamPeer::SendBuffer(stream_).size());
EXPECT_TRUE(stream_->OnStreamFrameAcked(18, 9, false, QuicTime::Delta::Zero(),
&newly_acked_length));
EXPECT_EQ(9u, newly_acked_length);
EXPECT_EQ(3u, QuicStreamPeer::SendBuffer(stream_).size());
EXPECT_TRUE(stream_->OnStreamFrameAcked(0, 9, false, QuicTime::Delta::Zero(),
&newly_acked_length));
EXPECT_EQ(9u, newly_acked_length);
EXPECT_EQ(0u, QuicStreamPeer::SendBuffer(stream_).size());
// FIN is not acked yet.
EXPECT_TRUE(stream_->IsWaitingForAcks());
EXPECT_TRUE(stream_->OnStreamFrameAcked(27, 0, true, QuicTime::Delta::Zero(),
&newly_acked_length));
EXPECT_EQ(0u, newly_acked_length);
EXPECT_FALSE(stream_->IsWaitingForAcks());
}
TEST_P(QuicStreamTest, CancelStream) {
Initialize();
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillRepeatedly(Invoke(MockQuicSession::ConsumeData));
EXPECT_FALSE(stream_->IsWaitingForAcks());
EXPECT_EQ(0u, QuicStreamPeer::SendBuffer(stream_).size());
stream_->WriteOrBufferData(kData1, false, nullptr);
EXPECT_TRUE(stream_->IsWaitingForAcks());
EXPECT_EQ(1u, QuicStreamPeer::SendBuffer(stream_).size());
// Cancel stream.
stream_->Reset(QUIC_STREAM_NO_ERROR);
// stream still waits for acks as the error code is QUIC_STREAM_NO_ERROR, and
// data is going to be retransmitted.
EXPECT_TRUE(stream_->IsWaitingForAcks());
EXPECT_CALL(*session_,
SendRstStream(stream_->id(), QUIC_STREAM_CANCELLED, 9));
stream_->Reset(QUIC_STREAM_CANCELLED);
EXPECT_EQ(1u, QuicStreamPeer::SendBuffer(stream_).size());
// Stream stops waiting for acks as data is not going to be retransmitted.
EXPECT_FALSE(stream_->IsWaitingForAcks());
}
TEST_P(QuicStreamTest, RstFrameReceivedStreamNotFinishSending) {
Initialize();
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillRepeatedly(Invoke(MockQuicSession::ConsumeData));
EXPECT_FALSE(stream_->IsWaitingForAcks());
EXPECT_EQ(0u, QuicStreamPeer::SendBuffer(stream_).size());
stream_->WriteOrBufferData(kData1, false, nullptr);
EXPECT_TRUE(stream_->IsWaitingForAcks());
EXPECT_EQ(1u, QuicStreamPeer::SendBuffer(stream_).size());
// RST_STREAM received.
QuicRstStreamFrame rst_frame(kInvalidControlFrameId, stream_->id(),
QUIC_STREAM_CANCELLED, 9);
EXPECT_CALL(*session_,
SendRstStream(stream_->id(), QUIC_RST_ACKNOWLEDGEMENT, 9));
stream_->OnStreamReset(rst_frame);
EXPECT_EQ(1u, QuicStreamPeer::SendBuffer(stream_).size());
// Stream stops waiting for acks as it does not finish sending and rst is
// sent.
EXPECT_FALSE(stream_->IsWaitingForAcks());
}
TEST_P(QuicStreamTest, RstFrameReceivedStreamFinishSending) {
Initialize();
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillRepeatedly(Invoke(MockQuicSession::ConsumeData));
EXPECT_FALSE(stream_->IsWaitingForAcks());
EXPECT_EQ(0u, QuicStreamPeer::SendBuffer(stream_).size());
stream_->WriteOrBufferData(kData1, true, nullptr);
EXPECT_TRUE(stream_->IsWaitingForAcks());
// RST_STREAM received.
EXPECT_CALL(*session_, SendRstStream(_, _, _)).Times(0);
QuicRstStreamFrame rst_frame(kInvalidControlFrameId, stream_->id(),
QUIC_STREAM_CANCELLED, 1234);
stream_->OnStreamReset(rst_frame);
// Stream still waits for acks as it finishes sending and has unacked data.
EXPECT_TRUE(stream_->IsWaitingForAcks());
EXPECT_EQ(1u, QuicStreamPeer::SendBuffer(stream_).size());
}
TEST_P(QuicStreamTest, ConnectionClosed) {
Initialize();
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillRepeatedly(Invoke(MockQuicSession::ConsumeData));
EXPECT_FALSE(stream_->IsWaitingForAcks());
EXPECT_EQ(0u, QuicStreamPeer::SendBuffer(stream_).size());
stream_->WriteOrBufferData(kData1, false, nullptr);
EXPECT_TRUE(stream_->IsWaitingForAcks());
EXPECT_CALL(*session_,
SendRstStream(stream_->id(), QUIC_RST_ACKNOWLEDGEMENT, 9));
stream_->OnConnectionClosed(QUIC_INTERNAL_ERROR,
ConnectionCloseSource::FROM_SELF);
EXPECT_EQ(1u, QuicStreamPeer::SendBuffer(stream_).size());
// Stream stops waiting for acks as connection is going to close.
EXPECT_FALSE(stream_->IsWaitingForAcks());
}
TEST_P(QuicStreamTest, CanWriteNewDataAfterData) {
SetQuicFlag(FLAGS_quic_buffered_data_threshold, 100);
Initialize();
EXPECT_TRUE(stream_->CanWriteNewDataAfterData(99));
EXPECT_FALSE(stream_->CanWriteNewDataAfterData(100));
}
TEST_P(QuicStreamTest, WriteBufferedData) {
// Set buffered data low water mark to be 100.
SetQuicFlag(FLAGS_quic_buffered_data_threshold, 100);
// Do not stream level flow control block this stream.
set_initial_flow_control_window_bytes(500000);
Initialize();
std::string data(1024, 'a');
EXPECT_TRUE(stream_->CanWriteNewData());
// Testing WriteOrBufferData.
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillOnce(InvokeWithoutArgs([this]() {
return MockQuicSession::ConsumeData(stream_, stream_->id(), 100u, 0u,
NO_FIN);
}));
stream_->WriteOrBufferData(data, false, nullptr);
stream_->WriteOrBufferData(data, false, nullptr);
stream_->WriteOrBufferData(data, false, nullptr);
// Verify all data is saved.
EXPECT_EQ(3 * data.length() - 100, stream_->BufferedDataBytes());
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillOnce(InvokeWithoutArgs([this]() {
return MockQuicSession::ConsumeData(stream_, stream_->id(), 100, 100u,
NO_FIN);
}));
// Buffered data size > threshold, do not ask upper layer for more data.
EXPECT_CALL(*stream_, OnCanWriteNewData()).Times(0);
stream_->OnCanWrite();
EXPECT_EQ(3 * data.length() - 200, stream_->BufferedDataBytes());
EXPECT_FALSE(stream_->CanWriteNewData());
// Send buffered data to make buffered data size < threshold.
size_t data_to_write = 3 * data.length() - 200 -
GetQuicFlag(FLAGS_quic_buffered_data_threshold) + 1;
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillOnce(InvokeWithoutArgs([this, data_to_write]() {
return MockQuicSession::ConsumeData(stream_, stream_->id(),
data_to_write, 200u, NO_FIN);
}));
// Buffered data size < threshold, ask upper layer for more data.
EXPECT_CALL(*stream_, OnCanWriteNewData()).Times(1);
stream_->OnCanWrite();
EXPECT_EQ(static_cast<uint64_t>(
GetQuicFlag(FLAGS_quic_buffered_data_threshold) - 1),
stream_->BufferedDataBytes());
EXPECT_TRUE(stream_->CanWriteNewData());
// Flush all buffered data.
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillOnce(Invoke(MockQuicSession::ConsumeData));
EXPECT_CALL(*stream_, OnCanWriteNewData()).Times(1);
stream_->OnCanWrite();
EXPECT_EQ(0u, stream_->BufferedDataBytes());
EXPECT_FALSE(stream_->HasBufferedData());
EXPECT_TRUE(stream_->CanWriteNewData());
// Testing Writev.
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillOnce(Return(QuicConsumedData(0, false)));
struct iovec iov = {const_cast<char*>(data.data()), data.length()};
QuicMemSliceStorage storage(
&iov, 1, session_->connection()->helper()->GetStreamSendBufferAllocator(),
1024);
QuicConsumedData consumed = stream_->WriteMemSlices(storage.ToSpan(), false);
// There is no buffered data before, all data should be consumed without
// respecting buffered data upper limit.
EXPECT_EQ(data.length(), consumed.bytes_consumed);
EXPECT_FALSE(consumed.fin_consumed);
EXPECT_EQ(data.length(), stream_->BufferedDataBytes());
EXPECT_FALSE(stream_->CanWriteNewData());
EXPECT_CALL(*session_, WritevData(_, _, _, _, _)).Times(0);
QuicMemSliceStorage storage2(
&iov, 1, session_->connection()->helper()->GetStreamSendBufferAllocator(),
1024);
consumed = stream_->WriteMemSlices(storage2.ToSpan(), false);
// No Data can be consumed as buffered data is beyond upper limit.
EXPECT_EQ(0u, consumed.bytes_consumed);
EXPECT_FALSE(consumed.fin_consumed);
EXPECT_EQ(data.length(), stream_->BufferedDataBytes());
data_to_write =
data.length() - GetQuicFlag(FLAGS_quic_buffered_data_threshold) + 1;
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillOnce(InvokeWithoutArgs([this, data_to_write]() {
return MockQuicSession::ConsumeData(stream_, stream_->id(),
data_to_write, 0u, NO_FIN);
}));
EXPECT_CALL(*stream_, OnCanWriteNewData()).Times(1);
stream_->OnCanWrite();
EXPECT_EQ(static_cast<uint64_t>(
GetQuicFlag(FLAGS_quic_buffered_data_threshold) - 1),
stream_->BufferedDataBytes());
EXPECT_TRUE(stream_->CanWriteNewData());
EXPECT_CALL(*session_, WritevData(_, _, _, _, _)).Times(0);
// All data can be consumed as buffered data is below upper limit.
QuicMemSliceStorage storage3(
&iov, 1, session_->connection()->helper()->GetStreamSendBufferAllocator(),
1024);
consumed = stream_->WriteMemSlices(storage3.ToSpan(), false);
EXPECT_EQ(data.length(), consumed.bytes_consumed);
EXPECT_FALSE(consumed.fin_consumed);
EXPECT_EQ(data.length() + GetQuicFlag(FLAGS_quic_buffered_data_threshold) - 1,
stream_->BufferedDataBytes());
EXPECT_FALSE(stream_->CanWriteNewData());
}
TEST_P(QuicStreamTest, WritevDataReachStreamLimit) {
Initialize();
std::string data("aaaaa");
QuicStreamPeer::SetStreamBytesWritten(kMaxStreamLength - data.length(),
stream_);
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillOnce(Invoke(&(MockQuicSession::ConsumeData)));
struct iovec iov = {const_cast<char*>(data.data()), 5u};
QuicMemSliceStorage storage(
&iov, 1, session_->connection()->helper()->GetStreamSendBufferAllocator(),
1024);
QuicConsumedData consumed = stream_->WriteMemSlices(storage.ToSpan(), false);
EXPECT_EQ(data.length(), consumed.bytes_consumed);
struct iovec iov2 = {const_cast<char*>(data.data()), 1u};
QuicMemSliceStorage storage2(
&iov2, 1,
session_->connection()->helper()->GetStreamSendBufferAllocator(), 1024);
EXPECT_CALL(*connection_, CloseConnection(QUIC_STREAM_LENGTH_OVERFLOW, _, _));
EXPECT_QUIC_BUG(stream_->WriteMemSlices(storage2.ToSpan(), false),
"Write too many data via stream");
}
TEST_P(QuicStreamTest, WriteMemSlices) {
// Set buffered data low water mark to be 100.
SetQuicFlag(FLAGS_quic_buffered_data_threshold, 100);
// Do not flow control block this stream.
set_initial_flow_control_window_bytes(500000);
Initialize();
char data[1024];
std::vector<std::pair<char*, size_t>> buffers;
buffers.push_back(std::make_pair(data, QUIC_ARRAYSIZE(data)));
buffers.push_back(std::make_pair(data, QUIC_ARRAYSIZE(data)));
QuicTestMemSliceVector vector1(buffers);
QuicTestMemSliceVector vector2(buffers);
QuicMemSliceSpan span1 = vector1.span();
QuicMemSliceSpan span2 = vector2.span();
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillOnce(InvokeWithoutArgs([this]() {
return MockQuicSession::ConsumeData(stream_, stream_->id(), 100u, 0u,
NO_FIN);
}));
// There is no buffered data before, all data should be consumed.
QuicConsumedData consumed = stream_->WriteMemSlices(span1, false);
EXPECT_EQ(2048u, consumed.bytes_consumed);
EXPECT_FALSE(consumed.fin_consumed);
EXPECT_EQ(2 * QUIC_ARRAYSIZE(data) - 100, stream_->BufferedDataBytes());
EXPECT_FALSE(stream_->fin_buffered());
EXPECT_CALL(*session_, WritevData(_, _, _, _, _)).Times(0);
// No Data can be consumed as buffered data is beyond upper limit.
consumed = stream_->WriteMemSlices(span2, true);
EXPECT_EQ(0u, consumed.bytes_consumed);
EXPECT_FALSE(consumed.fin_consumed);
EXPECT_EQ(2 * QUIC_ARRAYSIZE(data) - 100, stream_->BufferedDataBytes());
EXPECT_FALSE(stream_->fin_buffered());
size_t data_to_write = 2 * QUIC_ARRAYSIZE(data) - 100 -
GetQuicFlag(FLAGS_quic_buffered_data_threshold) + 1;
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillOnce(InvokeWithoutArgs([this, data_to_write]() {
return MockQuicSession::ConsumeData(stream_, stream_->id(),
data_to_write, 100u, NO_FIN);
}));
EXPECT_CALL(*stream_, OnCanWriteNewData()).Times(1);
stream_->OnCanWrite();
EXPECT_EQ(static_cast<uint64_t>(
GetQuicFlag(FLAGS_quic_buffered_data_threshold) - 1),
stream_->BufferedDataBytes());
// Try to write slices2 again.
EXPECT_CALL(*session_, WritevData(_, _, _, _, _)).Times(0);
consumed = stream_->WriteMemSlices(span2, true);
EXPECT_EQ(2048u, consumed.bytes_consumed);
EXPECT_TRUE(consumed.fin_consumed);
EXPECT_EQ(2 * QUIC_ARRAYSIZE(data) +
GetQuicFlag(FLAGS_quic_buffered_data_threshold) - 1,
stream_->BufferedDataBytes());
EXPECT_TRUE(stream_->fin_buffered());
// Flush all buffered data.
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillOnce(Invoke(MockQuicSession::ConsumeData));
stream_->OnCanWrite();
EXPECT_CALL(*stream_, OnCanWriteNewData()).Times(0);
EXPECT_FALSE(stream_->HasBufferedData());
EXPECT_TRUE(stream_->write_side_closed());
}
TEST_P(QuicStreamTest, WriteMemSlicesReachStreamLimit) {
Initialize();
QuicStreamPeer::SetStreamBytesWritten(kMaxStreamLength - 5u, stream_);
char data[5];
std::vector<std::pair<char*, size_t>> buffers;
buffers.push_back(std::make_pair(data, QUIC_ARRAYSIZE(data)));
QuicTestMemSliceVector vector1(buffers);
QuicMemSliceSpan span1 = vector1.span();
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillOnce(InvokeWithoutArgs([this]() {
return MockQuicSession::ConsumeData(stream_, stream_->id(), 5u, 0u,
NO_FIN);
}));
// There is no buffered data before, all data should be consumed.
QuicConsumedData consumed = stream_->WriteMemSlices(span1, false);
EXPECT_EQ(5u, consumed.bytes_consumed);
std::vector<std::pair<char*, size_t>> buffers2;
buffers2.push_back(std::make_pair(data, 1u));
QuicTestMemSliceVector vector2(buffers);
QuicMemSliceSpan span2 = vector2.span();
EXPECT_CALL(*connection_, CloseConnection(QUIC_STREAM_LENGTH_OVERFLOW, _, _));
EXPECT_QUIC_BUG(stream_->WriteMemSlices(span2, false),
"Write too many data via stream");
}
TEST_P(QuicStreamTest, StreamDataGetAckedMultipleTimes) {
Initialize();
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillRepeatedly(Invoke(MockQuicSession::ConsumeData));
// Send [0, 27) and fin.
stream_->WriteOrBufferData(kData1, false, nullptr);
stream_->WriteOrBufferData(kData1, false, nullptr);
stream_->WriteOrBufferData(kData1, true, nullptr);
EXPECT_EQ(3u, QuicStreamPeer::SendBuffer(stream_).size());
EXPECT_TRUE(stream_->IsWaitingForAcks());
// Ack [0, 9), [5, 22) and [18, 26)
// Verify [0, 9) 9 bytes are acked.
QuicByteCount newly_acked_length = 0;
EXPECT_TRUE(stream_->OnStreamFrameAcked(0, 9, false, QuicTime::Delta::Zero(),
&newly_acked_length));
EXPECT_EQ(9u, newly_acked_length);
EXPECT_EQ(2u, QuicStreamPeer::SendBuffer(stream_).size());
// Verify [9, 22) 13 bytes are acked.
EXPECT_TRUE(stream_->OnStreamFrameAcked(5, 17, false, QuicTime::Delta::Zero(),
&newly_acked_length));
EXPECT_EQ(13u, newly_acked_length);
EXPECT_EQ(1u, QuicStreamPeer::SendBuffer(stream_).size());
// Verify [22, 26) 4 bytes are acked.
EXPECT_TRUE(stream_->OnStreamFrameAcked(18, 8, false, QuicTime::Delta::Zero(),
&newly_acked_length));
EXPECT_EQ(4u, newly_acked_length);
EXPECT_EQ(1u, QuicStreamPeer::SendBuffer(stream_).size());
EXPECT_TRUE(stream_->IsWaitingForAcks());
// Ack [0, 27). Verify [26, 27) 1 byte is acked.
EXPECT_TRUE(stream_->OnStreamFrameAcked(26, 1, false, QuicTime::Delta::Zero(),
&newly_acked_length));
EXPECT_EQ(1u, newly_acked_length);
EXPECT_EQ(0u, QuicStreamPeer::SendBuffer(stream_).size());
EXPECT_TRUE(stream_->IsWaitingForAcks());
// Ack Fin.
EXPECT_TRUE(stream_->OnStreamFrameAcked(27, 0, true, QuicTime::Delta::Zero(),
&newly_acked_length));
EXPECT_EQ(0u, newly_acked_length);
EXPECT_EQ(0u, QuicStreamPeer::SendBuffer(stream_).size());
EXPECT_FALSE(stream_->IsWaitingForAcks());
// Ack [10, 27) and fin. No new data is acked.
EXPECT_FALSE(stream_->OnStreamFrameAcked(
10, 17, true, QuicTime::Delta::Zero(), &newly_acked_length));
EXPECT_EQ(0u, newly_acked_length);
EXPECT_EQ(0u, QuicStreamPeer::SendBuffer(stream_).size());
EXPECT_FALSE(stream_->IsWaitingForAcks());
}
TEST_P(QuicStreamTest, OnStreamFrameLost) {
Initialize();
// Send [0, 9).
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillOnce(Invoke(MockQuicSession::ConsumeData));
stream_->WriteOrBufferData(kData1, false, nullptr);
EXPECT_FALSE(stream_->HasBufferedData());
EXPECT_TRUE(stream_->IsStreamFrameOutstanding(0, 9, false));
// Try to send [9, 27), but connection is blocked.
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillOnce(Return(QuicConsumedData(0, false)));
stream_->WriteOrBufferData(kData2, false, nullptr);
stream_->WriteOrBufferData(kData2, false, nullptr);
EXPECT_TRUE(stream_->HasBufferedData());
EXPECT_FALSE(stream_->HasPendingRetransmission());
// Lost [0, 9). When stream gets a chance to write, only lost data is
// transmitted.
stream_->OnStreamFrameLost(0, 9, false);
EXPECT_TRUE(stream_->HasPendingRetransmission());
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillOnce(Invoke(MockQuicSession::ConsumeData));
stream_->OnCanWrite();
EXPECT_FALSE(stream_->HasPendingRetransmission());
EXPECT_TRUE(stream_->HasBufferedData());
// This OnCanWrite causes [9, 27) to be sent.
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillOnce(Invoke(MockQuicSession::ConsumeData));
stream_->OnCanWrite();
EXPECT_FALSE(stream_->HasBufferedData());
// Send a fin only frame.
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillOnce(Invoke(MockQuicSession::ConsumeData));
stream_->WriteOrBufferData("", true, nullptr);
// Lost [9, 27) and fin.
stream_->OnStreamFrameLost(9, 18, false);
stream_->OnStreamFrameLost(27, 0, true);
EXPECT_TRUE(stream_->HasPendingRetransmission());
// Ack [9, 18).
QuicByteCount newly_acked_length = 0;
EXPECT_TRUE(stream_->OnStreamFrameAcked(9, 9, false, QuicTime::Delta::Zero(),
&newly_acked_length));
EXPECT_EQ(9u, newly_acked_length);
EXPECT_FALSE(stream_->IsStreamFrameOutstanding(9, 3, false));
EXPECT_TRUE(stream_->HasPendingRetransmission());
// This OnCanWrite causes [18, 27) and fin to be retransmitted. Verify fin can
// be bundled with data.
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillOnce(InvokeWithoutArgs([this]() {
return MockQuicSession::ConsumeData(stream_, stream_->id(), 9u, 18u,
FIN);
}));
stream_->OnCanWrite();
EXPECT_FALSE(stream_->HasPendingRetransmission());
// Lost [9, 18) again, but it is not considered as lost because kData2
// has been acked.
stream_->OnStreamFrameLost(9, 9, false);
EXPECT_FALSE(stream_->HasPendingRetransmission());
EXPECT_TRUE(stream_->IsStreamFrameOutstanding(27, 0, true));
}
TEST_P(QuicStreamTest, CannotBundleLostFin) {
Initialize();
// Send [0, 18) and fin.
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillRepeatedly(Invoke(MockQuicSession::ConsumeData));
stream_->WriteOrBufferData(kData1, false, nullptr);
stream_->WriteOrBufferData(kData2, true, nullptr);
// Lost [0, 9) and fin.
stream_->OnStreamFrameLost(0, 9, false);
stream_->OnStreamFrameLost(18, 0, true);
// Retransmit lost data. Verify [0, 9) and fin are retransmitted in two
// frames.
InSequence s;
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillOnce(InvokeWithoutArgs([this]() {
return MockQuicSession::ConsumeData(stream_, stream_->id(), 9u, 0u,
NO_FIN);
}));
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillOnce(Return(QuicConsumedData(0, true)));
stream_->OnCanWrite();
}
TEST_P(QuicStreamTest, MarkConnectionLevelWriteBlockedOnWindowUpdateFrame) {
// Set a small initial control window size.
set_initial_flow_control_window_bytes(100);
Initialize();
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillRepeatedly(Invoke(MockQuicSession::ConsumeData));
EXPECT_CALL(*connection_, SendControlFrame(_))
.WillOnce(Invoke(this, &QuicStreamTest::ClearControlFrame));
std::string data(1024, '.');
stream_->WriteOrBufferData(data, false, nullptr);
EXPECT_FALSE(HasWriteBlockedStreams());
QuicWindowUpdateFrame window_update(kInvalidControlFrameId, stream_->id(),
1234);
stream_->OnWindowUpdateFrame(window_update);
// Verify stream is marked connection level write blocked.
EXPECT_TRUE(HasWriteBlockedStreams());
EXPECT_TRUE(stream_->HasBufferedData());
}
// Regression test for b/73282665.
TEST_P(QuicStreamTest,
MarkConnectionLevelWriteBlockedOnWindowUpdateFrameWithNoBufferedData) {
// Set a small initial flow control window size.
const uint32_t kSmallWindow = 100;
set_initial_flow_control_window_bytes(kSmallWindow);
Initialize();
std::string data(kSmallWindow, '.');
EXPECT_CALL(*session_, WritevData(_, _, _, _, _))
.WillRepeatedly(Invoke(MockQuicSession::ConsumeData));
EXPECT_CALL(*connection_, SendControlFrame(_))
.WillOnce(Invoke(this, &QuicStreamTest::ClearControlFrame));
stream_->WriteOrBufferData(data, false, nullptr);
EXPECT_FALSE(HasWriteBlockedStreams());
QuicWindowUpdateFrame window_update(kInvalidControlFrameId, stream_->id(),
120);
stream_->OnWindowUpdateFrame(window_update);
EXPECT_FALSE(stream_->HasBufferedData());
// Verify stream is marked as blocked although there is no buffered data.
EXPECT_TRUE(HasWriteBlockedStreams());
}
TEST_P(QuicStreamTest, RetransmitStreamData) {
Initialize();
InSequence s;
// Send [0, 18) with fin.
EXPECT_CALL(*session_, WritevData(_, stream_->id(), _, _, _))
.Times(2)
.WillRepeatedly(Invoke(MockQuicSession::ConsumeData));
stream_->WriteOrBufferData(kData1, false, nullptr);
stream_->WriteOrBufferData(kData1, true, nullptr);
// Ack [10, 13).
QuicByteCount newly_acked_length = 0;
stream_->OnStreamFrameAcked(10, 3, false, QuicTime::Delta::Zero(),
&newly_acked_length);
EXPECT_EQ(3u, newly_acked_length);
// Retransmit [0, 18) with fin, and only [0, 8) is consumed.
EXPECT_CALL(*session_, WritevData(_, stream_->id(), 10, 0, NO_FIN))
.WillOnce(InvokeWithoutArgs([this]() {
return MockQuicSession::ConsumeData(stream_, stream_->id(), 8, 0u,
NO_FIN);
}));
EXPECT_FALSE(stream_->RetransmitStreamData(0, 18, true));
// Retransmit [0, 18) with fin, and all is consumed.
EXPECT_CALL(*session_, WritevData(_, stream_->id(), 10, 0, NO_FIN))
.WillOnce(Invoke(MockQuicSession::ConsumeData));
EXPECT_CALL(*session_, WritevData(_, stream_->id(), 5, 13, FIN))
.WillOnce(Invoke(MockQuicSession::ConsumeData));
EXPECT_TRUE(stream_->RetransmitStreamData(0, 18, true));
// Retransmit [0, 8) with fin, and all is consumed.
EXPECT_CALL(*session_, WritevData(_, stream_->id(), 8, 0, NO_FIN))
.WillOnce(Invoke(MockQuicSession::ConsumeData));
EXPECT_CALL(*session_, WritevData(_, stream_->id(), 0, 18, FIN))
.WillOnce(Invoke(MockQuicSession::ConsumeData));
EXPECT_TRUE(stream_->RetransmitStreamData(0, 8, true));
}
TEST_P(QuicStreamTest, ResetStreamOnTtlExpiresRetransmitLostData) {
Initialize();
EXPECT_CALL(*session_, WritevData(_, stream_->id(), 200, 0, FIN))
.WillOnce(Invoke(MockQuicSession::ConsumeData));
std::string body(200, 'a');
stream_->WriteOrBufferData(body, true, nullptr);
// Set TTL to be 1 s.
QuicTime::Delta ttl = QuicTime::Delta::FromSeconds(1);
ASSERT_TRUE(stream_->MaybeSetTtl(ttl));
// Verify data gets retransmitted because TTL does not expire.
EXPECT_CALL(*session_, WritevData(_, stream_->id(), 100, 0, NO_FIN))
.WillOnce(Invoke(MockQuicSession::ConsumeData));
EXPECT_TRUE(stream_->RetransmitStreamData(0, 100, false));
stream_->OnStreamFrameLost(100, 100, true);
EXPECT_TRUE(stream_->HasPendingRetransmission());
connection_->AdvanceTime(QuicTime::Delta::FromSeconds(1));
// Verify stream gets reset because TTL expires.
EXPECT_CALL(*session_, SendRstStream(_, QUIC_STREAM_TTL_EXPIRED, _)).Times(1);
stream_->OnCanWrite();
}
TEST_P(QuicStreamTest, ResetStreamOnTtlExpiresEarlyRetransmitData) {
Initialize();
EXPECT_CALL(*session_, WritevData(_, stream_->id(), 200, 0, FIN))
.WillOnce(Invoke(MockQuicSession::ConsumeData));
std::string body(200, 'a');
stream_->WriteOrBufferData(body, true, nullptr);
// Set TTL to be 1 s.
QuicTime::Delta ttl = QuicTime::Delta::FromSeconds(1);
ASSERT_TRUE(stream_->MaybeSetTtl(ttl));
connection_->AdvanceTime(QuicTime::Delta::FromSeconds(1));
// Verify stream gets reset because TTL expires.
EXPECT_CALL(*session_, SendRstStream(_, QUIC_STREAM_TTL_EXPIRED, _)).Times(1);
stream_->RetransmitStreamData(0, 100, false);
}
// Test that QuicStream::StopSending A) is a no-op if the connection is not in
// version 99, B) that it properly invokes QuicSession::StopSending, and C) that
// the correct data is passed along, including getting the stream ID.
TEST_P(QuicParameterizedStreamTest, CheckStopSending) {
Initialize();
const int kStopSendingCode = 123;
// These must start as false.
EXPECT_FALSE(stream_->write_side_closed());
EXPECT_FALSE(QuicStreamPeer::read_side_closed(stream_));
// Expect to actually see a stop sending if and only if we are in version 99.
if (connection_->transport_version() == QUIC_VERSION_99) {
EXPECT_CALL(*session_, SendStopSending(kStopSendingCode, stream_->id()))
.Times(1);
} else {
EXPECT_CALL(*session_, SendStopSending(_, _)).Times(0);
}
stream_->SendStopSending(kStopSendingCode);
// Sending a STOP_SENDING does not actually close the local stream.
// Our implementation waits for the responding RESET_STREAM to effect the
// closes. Therefore, read- and write-side closes should both be false.
EXPECT_FALSE(stream_->write_side_closed());
EXPECT_FALSE(QuicStreamPeer::read_side_closed(stream_));
}
// Test that OnStreamReset does one-way (read) closes if version 99, two way
// (read and write) if not version 99.
TEST_P(QuicStreamTest, OnStreamResetReadOrReadWrite) {
Initialize();
EXPECT_FALSE(stream_->write_side_closed());
EXPECT_FALSE(QuicStreamPeer::read_side_closed(stream_));
QuicRstStreamFrame rst_frame(kInvalidControlFrameId, stream_->id(),
QUIC_STREAM_CANCELLED, 1234);
stream_->OnStreamReset(rst_frame);
if (connection_->transport_version() == QUIC_VERSION_99) {
// Version 99/IETF QUIC should close just the read side.
EXPECT_TRUE(QuicStreamPeer::read_side_closed(stream_));
EXPECT_FALSE(stream_->write_side_closed());
} else {
// Google QUIC should close both sides of the stream.
EXPECT_TRUE(stream_->write_side_closed());
EXPECT_TRUE(QuicStreamPeer::read_side_closed(stream_));
}
}
// Test that receiving a STOP_SENDING just closes the write side of the stream.
// If not V99, the test is a noop (no STOP_SENDING in Google QUIC).
TEST_P(QuicStreamTest, OnStopSendingReadOrReadWrite) {
Initialize();
if (connection_->transport_version() != QUIC_VERSION_99) {
return;
}
EXPECT_FALSE(stream_->write_side_closed());
EXPECT_FALSE(QuicStreamPeer::read_side_closed(stream_));
// Simulate receipt of a STOP_SENDING.
stream_->OnStopSending(123);
// Should close just the read side.
EXPECT_FALSE(QuicStreamPeer::read_side_closed(stream_));
EXPECT_TRUE(stream_->write_side_closed());
}
// SendOnlyRstStream must only send a RESET_STREAM (no bundled STOP_SENDING).
TEST_P(QuicStreamTest, SendOnlyRstStream) {
Initialize();
if (connection_->transport_version() != QUIC_VERSION_99) {
return;
}
EXPECT_CALL(*connection_,
OnStreamReset(stream_->id(), QUIC_BAD_APPLICATION_PAYLOAD));
EXPECT_CALL(*connection_, SendControlFrame(_))
.Times(1)
.WillOnce(Invoke(this, &QuicStreamTest::ClearResetStreamFrame));
QuicSessionPeer::SendRstStreamInner(session_.get(), stream_->id(),
QUIC_BAD_APPLICATION_PAYLOAD,
stream_->stream_bytes_written(),
/*close_write_side_only=*/true);
// ResetStreamOnly should just close the write side.
EXPECT_FALSE(QuicStreamPeer::read_side_closed(stream_));
EXPECT_TRUE(stream_->write_side_closed());
}
} // namespace
} // namespace test
} // namespace quic