| /* |
| * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #include <map> |
| #include <memory> |
| #include <set> |
| |
| #include "testing/gmock/include/gmock/gmock.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| #include "webrtc/base/rate_limiter.h" |
| #include "webrtc/common_types.h" |
| #include "webrtc/modules/rtp_rtcp/include/rtp_header_parser.h" |
| #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h" |
| #include "webrtc/modules/rtp_rtcp/source/rtcp_packet.h" |
| #include "webrtc/modules/rtp_rtcp/source/rtcp_packet/nack.h" |
| #include "webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.h" |
| #include "webrtc/test/rtcp_packet_parser.h" |
| |
| using ::testing::_; |
| using ::testing::ElementsAre; |
| using ::testing::NiceMock; |
| using ::testing::Return; |
| using ::testing::SaveArg; |
| |
| namespace webrtc { |
| namespace { |
| const uint32_t kSenderSsrc = 0x12345; |
| const uint32_t kReceiverSsrc = 0x23456; |
| const int64_t kOneWayNetworkDelayMs = 100; |
| const uint8_t kBaseLayerTid = 0; |
| const uint8_t kHigherLayerTid = 1; |
| const uint16_t kSequenceNumber = 100; |
| const int64_t kMaxRttMs = 1000; |
| |
| class RtcpRttStatsTestImpl : public RtcpRttStats { |
| public: |
| RtcpRttStatsTestImpl() : rtt_ms_(0) {} |
| virtual ~RtcpRttStatsTestImpl() {} |
| |
| void OnRttUpdate(int64_t rtt_ms) override { rtt_ms_ = rtt_ms; } |
| int64_t LastProcessedRtt() const override { return rtt_ms_; } |
| int64_t rtt_ms_; |
| }; |
| |
| class SendTransport : public Transport, |
| public NullRtpData { |
| public: |
| SendTransport() |
| : receiver_(NULL), |
| clock_(NULL), |
| delay_ms_(0), |
| rtp_packets_sent_(0) { |
| } |
| |
| void SetRtpRtcpModule(ModuleRtpRtcpImpl* receiver) { |
| receiver_ = receiver; |
| } |
| void SimulateNetworkDelay(int64_t delay_ms, SimulatedClock* clock) { |
| clock_ = clock; |
| delay_ms_ = delay_ms; |
| } |
| bool SendRtp(const uint8_t* data, |
| size_t len, |
| const PacketOptions& options) override { |
| RTPHeader header; |
| std::unique_ptr<RtpHeaderParser> parser(RtpHeaderParser::Create()); |
| EXPECT_TRUE(parser->Parse(static_cast<const uint8_t*>(data), len, &header)); |
| ++rtp_packets_sent_; |
| last_rtp_header_ = header; |
| return true; |
| } |
| bool SendRtcp(const uint8_t* data, size_t len) override { |
| test::RtcpPacketParser parser; |
| parser.Parse(data, len); |
| last_nack_list_ = parser.nack()->packet_ids(); |
| |
| if (clock_) { |
| clock_->AdvanceTimeMilliseconds(delay_ms_); |
| } |
| EXPECT_TRUE(receiver_); |
| EXPECT_EQ(0, receiver_->IncomingRtcpPacket(data, len)); |
| return true; |
| } |
| ModuleRtpRtcpImpl* receiver_; |
| SimulatedClock* clock_; |
| int64_t delay_ms_; |
| int rtp_packets_sent_; |
| RTPHeader last_rtp_header_; |
| std::vector<uint16_t> last_nack_list_; |
| }; |
| |
| class RtpRtcpModule : public RtcpPacketTypeCounterObserver { |
| public: |
| explicit RtpRtcpModule(SimulatedClock* clock) |
| : receive_statistics_(ReceiveStatistics::Create(clock)), |
| remote_ssrc_(0), |
| retransmission_rate_limiter_(clock, kMaxRttMs) { |
| RtpRtcp::Configuration config; |
| config.audio = false; |
| config.clock = clock; |
| config.outgoing_transport = &transport_; |
| config.receive_statistics = receive_statistics_.get(); |
| config.rtcp_packet_type_counter_observer = this; |
| config.rtt_stats = &rtt_stats_; |
| config.retransmission_rate_limiter = &retransmission_rate_limiter_; |
| |
| impl_.reset(new ModuleRtpRtcpImpl(config)); |
| impl_->SetRTCPStatus(RtcpMode::kCompound); |
| |
| transport_.SimulateNetworkDelay(kOneWayNetworkDelayMs, clock); |
| } |
| |
| RtcpPacketTypeCounter packets_sent_; |
| RtcpPacketTypeCounter packets_received_; |
| std::unique_ptr<ReceiveStatistics> receive_statistics_; |
| SendTransport transport_; |
| RtcpRttStatsTestImpl rtt_stats_; |
| std::unique_ptr<ModuleRtpRtcpImpl> impl_; |
| uint32_t remote_ssrc_; |
| RateLimiter retransmission_rate_limiter_; |
| |
| void SetRemoteSsrc(uint32_t ssrc) { |
| remote_ssrc_ = ssrc; |
| impl_->SetRemoteSSRC(ssrc); |
| } |
| |
| void RtcpPacketTypesCounterUpdated( |
| uint32_t ssrc, |
| const RtcpPacketTypeCounter& packet_counter) override { |
| counter_map_[ssrc] = packet_counter; |
| } |
| |
| RtcpPacketTypeCounter RtcpSent() { |
| // RTCP counters for remote SSRC. |
| return counter_map_[remote_ssrc_]; |
| } |
| |
| RtcpPacketTypeCounter RtcpReceived() { |
| // Received RTCP stats for (own) local SSRC. |
| return counter_map_[impl_->SSRC()]; |
| } |
| int RtpSent() { |
| return transport_.rtp_packets_sent_; |
| } |
| uint16_t LastRtpSequenceNumber() { |
| return transport_.last_rtp_header_.sequenceNumber; |
| } |
| std::vector<uint16_t> LastNackListSent() { |
| return transport_.last_nack_list_; |
| } |
| |
| private: |
| std::map<uint32_t, RtcpPacketTypeCounter> counter_map_; |
| }; |
| } // namespace |
| |
| class RtpRtcpImplTest : public ::testing::Test { |
| protected: |
| RtpRtcpImplTest() |
| : clock_(133590000000000), |
| sender_(&clock_), |
| receiver_(&clock_) { |
| // Send module. |
| EXPECT_EQ(0, sender_.impl_->SetSendingStatus(true)); |
| sender_.impl_->SetSendingMediaStatus(true); |
| sender_.impl_->SetSSRC(kSenderSsrc); |
| sender_.SetRemoteSsrc(kReceiverSsrc); |
| sender_.impl_->SetSequenceNumber(kSequenceNumber); |
| sender_.impl_->SetStorePacketsStatus(true, 100); |
| |
| memset(&codec_, 0, sizeof(VideoCodec)); |
| codec_.plType = 100; |
| strncpy(codec_.plName, "VP8", 3); |
| codec_.width = 320; |
| codec_.height = 180; |
| EXPECT_EQ(0, sender_.impl_->RegisterSendPayload(codec_)); |
| |
| // Receive module. |
| EXPECT_EQ(0, receiver_.impl_->SetSendingStatus(false)); |
| receiver_.impl_->SetSendingMediaStatus(false); |
| receiver_.impl_->SetSSRC(kReceiverSsrc); |
| receiver_.SetRemoteSsrc(kSenderSsrc); |
| // Transport settings. |
| sender_.transport_.SetRtpRtcpModule(receiver_.impl_.get()); |
| receiver_.transport_.SetRtpRtcpModule(sender_.impl_.get()); |
| } |
| SimulatedClock clock_; |
| RtpRtcpModule sender_; |
| RtpRtcpModule receiver_; |
| VideoCodec codec_; |
| |
| void SendFrame(const RtpRtcpModule* module, uint8_t tid) { |
| RTPVideoHeaderVP8 vp8_header = {}; |
| vp8_header.temporalIdx = tid; |
| RTPVideoHeader rtp_video_header = { |
| codec_.width, codec_.height, kVideoRotation_0, {-1, -1}, true, 0, |
| kRtpVideoVp8, {vp8_header}}; |
| |
| const uint8_t payload[100] = {0}; |
| EXPECT_EQ(true, module->impl_->SendOutgoingData( |
| kVideoFrameKey, codec_.plType, 0, 0, payload, |
| sizeof(payload), nullptr, &rtp_video_header, nullptr)); |
| } |
| |
| void IncomingRtcpNack(const RtpRtcpModule* module, uint16_t sequence_number) { |
| bool sender = module->impl_->SSRC() == kSenderSsrc; |
| rtcp::Nack nack; |
| uint16_t list[1]; |
| list[0] = sequence_number; |
| const uint16_t kListLength = sizeof(list) / sizeof(list[0]); |
| nack.From(sender ? kReceiverSsrc : kSenderSsrc); |
| nack.To(sender ? kSenderSsrc : kReceiverSsrc); |
| nack.WithList(list, kListLength); |
| rtc::Buffer packet = nack.Build(); |
| EXPECT_EQ(0, module->impl_->IncomingRtcpPacket(packet.data(), |
| packet.size())); |
| } |
| }; |
| |
| TEST_F(RtpRtcpImplTest, SetSelectiveRetransmissions_BaseLayer) { |
| sender_.impl_->SetSelectiveRetransmissions(kRetransmitBaseLayer); |
| EXPECT_EQ(kRetransmitBaseLayer, sender_.impl_->SelectiveRetransmissions()); |
| |
| // Send frames. |
| EXPECT_EQ(0, sender_.RtpSent()); |
| SendFrame(&sender_, kBaseLayerTid); // kSequenceNumber |
| SendFrame(&sender_, kHigherLayerTid); // kSequenceNumber + 1 |
| SendFrame(&sender_, kNoTemporalIdx); // kSequenceNumber + 2 |
| EXPECT_EQ(3, sender_.RtpSent()); |
| EXPECT_EQ(kSequenceNumber + 2, sender_.LastRtpSequenceNumber()); |
| |
| // Min required delay until retransmit = 5 + RTT ms (RTT = 0). |
| clock_.AdvanceTimeMilliseconds(5); |
| |
| // Frame with kBaseLayerTid re-sent. |
| IncomingRtcpNack(&sender_, kSequenceNumber); |
| EXPECT_EQ(4, sender_.RtpSent()); |
| EXPECT_EQ(kSequenceNumber, sender_.LastRtpSequenceNumber()); |
| // Frame with kHigherLayerTid not re-sent. |
| IncomingRtcpNack(&sender_, kSequenceNumber + 1); |
| EXPECT_EQ(4, sender_.RtpSent()); |
| // Frame with kNoTemporalIdx re-sent. |
| IncomingRtcpNack(&sender_, kSequenceNumber + 2); |
| EXPECT_EQ(5, sender_.RtpSent()); |
| EXPECT_EQ(kSequenceNumber + 2, sender_.LastRtpSequenceNumber()); |
| } |
| |
| TEST_F(RtpRtcpImplTest, SetSelectiveRetransmissions_HigherLayers) { |
| const uint8_t kSetting = kRetransmitBaseLayer + kRetransmitHigherLayers; |
| sender_.impl_->SetSelectiveRetransmissions(kSetting); |
| EXPECT_EQ(kSetting, sender_.impl_->SelectiveRetransmissions()); |
| |
| // Send frames. |
| EXPECT_EQ(0, sender_.RtpSent()); |
| SendFrame(&sender_, kBaseLayerTid); // kSequenceNumber |
| SendFrame(&sender_, kHigherLayerTid); // kSequenceNumber + 1 |
| SendFrame(&sender_, kNoTemporalIdx); // kSequenceNumber + 2 |
| EXPECT_EQ(3, sender_.RtpSent()); |
| EXPECT_EQ(kSequenceNumber + 2, sender_.LastRtpSequenceNumber()); |
| |
| // Min required delay until retransmit = 5 + RTT ms (RTT = 0). |
| clock_.AdvanceTimeMilliseconds(5); |
| |
| // Frame with kBaseLayerTid re-sent. |
| IncomingRtcpNack(&sender_, kSequenceNumber); |
| EXPECT_EQ(4, sender_.RtpSent()); |
| EXPECT_EQ(kSequenceNumber, sender_.LastRtpSequenceNumber()); |
| // Frame with kHigherLayerTid re-sent. |
| IncomingRtcpNack(&sender_, kSequenceNumber + 1); |
| EXPECT_EQ(5, sender_.RtpSent()); |
| EXPECT_EQ(kSequenceNumber + 1, sender_.LastRtpSequenceNumber()); |
| // Frame with kNoTemporalIdx re-sent. |
| IncomingRtcpNack(&sender_, kSequenceNumber + 2); |
| EXPECT_EQ(6, sender_.RtpSent()); |
| EXPECT_EQ(kSequenceNumber + 2, sender_.LastRtpSequenceNumber()); |
| } |
| |
| TEST_F(RtpRtcpImplTest, Rtt) { |
| RTPHeader header; |
| header.timestamp = 1; |
| header.sequenceNumber = 123; |
| header.ssrc = kSenderSsrc; |
| header.headerLength = 12; |
| receiver_.receive_statistics_->IncomingPacket(header, 100, false); |
| |
| // Send Frame before sending an SR. |
| SendFrame(&sender_, kBaseLayerTid); |
| // Sender module should send an SR. |
| EXPECT_EQ(0, sender_.impl_->SendRTCP(kRtcpReport)); |
| |
| // Receiver module should send a RR with a response to the last received SR. |
| clock_.AdvanceTimeMilliseconds(1000); |
| EXPECT_EQ(0, receiver_.impl_->SendRTCP(kRtcpReport)); |
| |
| // Verify RTT. |
| int64_t rtt; |
| int64_t avg_rtt; |
| int64_t min_rtt; |
| int64_t max_rtt; |
| EXPECT_EQ(0, |
| sender_.impl_->RTT(kReceiverSsrc, &rtt, &avg_rtt, &min_rtt, &max_rtt)); |
| EXPECT_NEAR(2 * kOneWayNetworkDelayMs, rtt, 1); |
| EXPECT_NEAR(2 * kOneWayNetworkDelayMs, avg_rtt, 1); |
| EXPECT_NEAR(2 * kOneWayNetworkDelayMs, min_rtt, 1); |
| EXPECT_NEAR(2 * kOneWayNetworkDelayMs, max_rtt, 1); |
| |
| // No RTT from other ssrc. |
| EXPECT_EQ(-1, |
| sender_.impl_->RTT(kReceiverSsrc+1, &rtt, &avg_rtt, &min_rtt, &max_rtt)); |
| |
| // Verify RTT from rtt_stats config. |
| EXPECT_EQ(0, sender_.rtt_stats_.LastProcessedRtt()); |
| EXPECT_EQ(0, sender_.impl_->rtt_ms()); |
| sender_.impl_->Process(); |
| EXPECT_NEAR(2 * kOneWayNetworkDelayMs, sender_.rtt_stats_.LastProcessedRtt(), |
| 1); |
| EXPECT_NEAR(2 * kOneWayNetworkDelayMs, sender_.impl_->rtt_ms(), 1); |
| } |
| |
| TEST_F(RtpRtcpImplTest, SetRtcpXrRrtrStatus) { |
| EXPECT_FALSE(receiver_.impl_->RtcpXrRrtrStatus()); |
| receiver_.impl_->SetRtcpXrRrtrStatus(true); |
| EXPECT_TRUE(receiver_.impl_->RtcpXrRrtrStatus()); |
| } |
| |
| TEST_F(RtpRtcpImplTest, RttForReceiverOnly) { |
| receiver_.impl_->SetRtcpXrRrtrStatus(true); |
| |
| // Receiver module should send a Receiver time reference report (RTRR). |
| EXPECT_EQ(0, receiver_.impl_->SendRTCP(kRtcpReport)); |
| |
| // Sender module should send a response to the last received RTRR (DLRR). |
| clock_.AdvanceTimeMilliseconds(1000); |
| // Send Frame before sending a SR. |
| SendFrame(&sender_, kBaseLayerTid); |
| EXPECT_EQ(0, sender_.impl_->SendRTCP(kRtcpReport)); |
| |
| // Verify RTT. |
| EXPECT_EQ(0, receiver_.rtt_stats_.LastProcessedRtt()); |
| EXPECT_EQ(0, receiver_.impl_->rtt_ms()); |
| receiver_.impl_->Process(); |
| EXPECT_NEAR(2 * kOneWayNetworkDelayMs, |
| receiver_.rtt_stats_.LastProcessedRtt(), 1); |
| EXPECT_NEAR(2 * kOneWayNetworkDelayMs, receiver_.impl_->rtt_ms(), 1); |
| } |
| |
| TEST_F(RtpRtcpImplTest, NoSrBeforeMedia) { |
| // Ignore fake transport delays in this test. |
| sender_.transport_.SimulateNetworkDelay(0, &clock_); |
| receiver_.transport_.SimulateNetworkDelay(0, &clock_); |
| |
| sender_.impl_->Process(); |
| EXPECT_EQ(-1, sender_.RtcpSent().first_packet_time_ms); |
| |
| // Verify no SR is sent before media has been sent, RR should still be sent |
| // from the receiving module though. |
| clock_.AdvanceTimeMilliseconds(2000); |
| int64_t current_time = clock_.TimeInMilliseconds(); |
| sender_.impl_->Process(); |
| receiver_.impl_->Process(); |
| EXPECT_EQ(-1, sender_.RtcpSent().first_packet_time_ms); |
| EXPECT_EQ(receiver_.RtcpSent().first_packet_time_ms, current_time); |
| |
| SendFrame(&sender_, kBaseLayerTid); |
| EXPECT_EQ(sender_.RtcpSent().first_packet_time_ms, current_time); |
| } |
| |
| TEST_F(RtpRtcpImplTest, RtcpPacketTypeCounter_Nack) { |
| EXPECT_EQ(-1, receiver_.RtcpSent().first_packet_time_ms); |
| EXPECT_EQ(-1, sender_.RtcpReceived().first_packet_time_ms); |
| EXPECT_EQ(0U, sender_.RtcpReceived().nack_packets); |
| EXPECT_EQ(0U, receiver_.RtcpSent().nack_packets); |
| |
| // Receive module sends a NACK. |
| const uint16_t kNackLength = 1; |
| uint16_t nack_list[kNackLength] = {123}; |
| EXPECT_EQ(0, receiver_.impl_->SendNACK(nack_list, kNackLength)); |
| EXPECT_EQ(1U, receiver_.RtcpSent().nack_packets); |
| EXPECT_GT(receiver_.RtcpSent().first_packet_time_ms, -1); |
| |
| // Send module receives the NACK. |
| EXPECT_EQ(1U, sender_.RtcpReceived().nack_packets); |
| EXPECT_GT(sender_.RtcpReceived().first_packet_time_ms, -1); |
| } |
| |
| TEST_F(RtpRtcpImplTest, RtcpPacketTypeCounter_FirAndPli) { |
| EXPECT_EQ(0U, sender_.RtcpReceived().fir_packets); |
| EXPECT_EQ(0U, receiver_.RtcpSent().fir_packets); |
| // Receive module sends a FIR. |
| EXPECT_EQ(0, receiver_.impl_->SendRTCP(kRtcpFir)); |
| EXPECT_EQ(1U, receiver_.RtcpSent().fir_packets); |
| // Send module receives the FIR. |
| EXPECT_EQ(1U, sender_.RtcpReceived().fir_packets); |
| |
| // Receive module sends a FIR and PLI. |
| std::set<RTCPPacketType> packet_types; |
| packet_types.insert(kRtcpFir); |
| packet_types.insert(kRtcpPli); |
| EXPECT_EQ(0, receiver_.impl_->SendCompoundRTCP(packet_types)); |
| EXPECT_EQ(2U, receiver_.RtcpSent().fir_packets); |
| EXPECT_EQ(1U, receiver_.RtcpSent().pli_packets); |
| // Send module receives the FIR and PLI. |
| EXPECT_EQ(2U, sender_.RtcpReceived().fir_packets); |
| EXPECT_EQ(1U, sender_.RtcpReceived().pli_packets); |
| } |
| |
| TEST_F(RtpRtcpImplTest, AddStreamDataCounters) { |
| StreamDataCounters rtp; |
| const int64_t kStartTimeMs = 1; |
| rtp.first_packet_time_ms = kStartTimeMs; |
| rtp.transmitted.packets = 1; |
| rtp.transmitted.payload_bytes = 1; |
| rtp.transmitted.header_bytes = 2; |
| rtp.transmitted.padding_bytes = 3; |
| EXPECT_EQ(rtp.transmitted.TotalBytes(), rtp.transmitted.payload_bytes + |
| rtp.transmitted.header_bytes + |
| rtp.transmitted.padding_bytes); |
| |
| StreamDataCounters rtp2; |
| rtp2.first_packet_time_ms = -1; |
| rtp2.transmitted.packets = 10; |
| rtp2.transmitted.payload_bytes = 10; |
| rtp2.retransmitted.header_bytes = 4; |
| rtp2.retransmitted.payload_bytes = 5; |
| rtp2.retransmitted.padding_bytes = 6; |
| rtp2.retransmitted.packets = 7; |
| rtp2.fec.packets = 8; |
| |
| StreamDataCounters sum = rtp; |
| sum.Add(rtp2); |
| EXPECT_EQ(kStartTimeMs, sum.first_packet_time_ms); |
| EXPECT_EQ(11U, sum.transmitted.packets); |
| EXPECT_EQ(11U, sum.transmitted.payload_bytes); |
| EXPECT_EQ(2U, sum.transmitted.header_bytes); |
| EXPECT_EQ(3U, sum.transmitted.padding_bytes); |
| EXPECT_EQ(4U, sum.retransmitted.header_bytes); |
| EXPECT_EQ(5U, sum.retransmitted.payload_bytes); |
| EXPECT_EQ(6U, sum.retransmitted.padding_bytes); |
| EXPECT_EQ(7U, sum.retransmitted.packets); |
| EXPECT_EQ(8U, sum.fec.packets); |
| EXPECT_EQ(sum.transmitted.TotalBytes(), |
| rtp.transmitted.TotalBytes() + rtp2.transmitted.TotalBytes()); |
| |
| StreamDataCounters rtp3; |
| rtp3.first_packet_time_ms = kStartTimeMs + 10; |
| sum.Add(rtp3); |
| EXPECT_EQ(kStartTimeMs, sum.first_packet_time_ms); // Holds oldest time. |
| } |
| |
| TEST_F(RtpRtcpImplTest, SendsInitialNackList) { |
| // Send module sends a NACK. |
| const uint16_t kNackLength = 1; |
| uint16_t nack_list[kNackLength] = {123}; |
| EXPECT_EQ(0U, sender_.RtcpSent().nack_packets); |
| // Send Frame before sending a compound RTCP that starts with SR. |
| SendFrame(&sender_, kBaseLayerTid); |
| EXPECT_EQ(0, sender_.impl_->SendNACK(nack_list, kNackLength)); |
| EXPECT_EQ(1U, sender_.RtcpSent().nack_packets); |
| EXPECT_THAT(sender_.LastNackListSent(), ElementsAre(123)); |
| } |
| |
| TEST_F(RtpRtcpImplTest, SendsExtendedNackList) { |
| // Send module sends a NACK. |
| const uint16_t kNackLength = 1; |
| uint16_t nack_list[kNackLength] = {123}; |
| EXPECT_EQ(0U, sender_.RtcpSent().nack_packets); |
| // Send Frame before sending a compound RTCP that starts with SR. |
| SendFrame(&sender_, kBaseLayerTid); |
| EXPECT_EQ(0, sender_.impl_->SendNACK(nack_list, kNackLength)); |
| EXPECT_EQ(1U, sender_.RtcpSent().nack_packets); |
| EXPECT_THAT(sender_.LastNackListSent(), ElementsAre(123)); |
| |
| // Same list not re-send. |
| EXPECT_EQ(0, sender_.impl_->SendNACK(nack_list, kNackLength)); |
| EXPECT_EQ(1U, sender_.RtcpSent().nack_packets); |
| EXPECT_THAT(sender_.LastNackListSent(), ElementsAre(123)); |
| |
| // Only extended list sent. |
| const uint16_t kNackExtLength = 2; |
| uint16_t nack_list_ext[kNackExtLength] = {123, 124}; |
| EXPECT_EQ(0, sender_.impl_->SendNACK(nack_list_ext, kNackExtLength)); |
| EXPECT_EQ(2U, sender_.RtcpSent().nack_packets); |
| EXPECT_THAT(sender_.LastNackListSent(), ElementsAre(124)); |
| } |
| |
| TEST_F(RtpRtcpImplTest, ReSendsNackListAfterRttMs) { |
| sender_.transport_.SimulateNetworkDelay(0, &clock_); |
| // Send module sends a NACK. |
| const uint16_t kNackLength = 2; |
| uint16_t nack_list[kNackLength] = {123, 125}; |
| EXPECT_EQ(0U, sender_.RtcpSent().nack_packets); |
| // Send Frame before sending a compound RTCP that starts with SR. |
| SendFrame(&sender_, kBaseLayerTid); |
| EXPECT_EQ(0, sender_.impl_->SendNACK(nack_list, kNackLength)); |
| EXPECT_EQ(1U, sender_.RtcpSent().nack_packets); |
| EXPECT_THAT(sender_.LastNackListSent(), ElementsAre(123, 125)); |
| |
| // Same list not re-send, rtt interval has not passed. |
| const int kStartupRttMs = 100; |
| clock_.AdvanceTimeMilliseconds(kStartupRttMs); |
| EXPECT_EQ(0, sender_.impl_->SendNACK(nack_list, kNackLength)); |
| EXPECT_EQ(1U, sender_.RtcpSent().nack_packets); |
| |
| // Rtt interval passed, full list sent. |
| clock_.AdvanceTimeMilliseconds(1); |
| EXPECT_EQ(0, sender_.impl_->SendNACK(nack_list, kNackLength)); |
| EXPECT_EQ(2U, sender_.RtcpSent().nack_packets); |
| EXPECT_THAT(sender_.LastNackListSent(), ElementsAre(123, 125)); |
| } |
| |
| TEST_F(RtpRtcpImplTest, UniqueNackRequests) { |
| receiver_.transport_.SimulateNetworkDelay(0, &clock_); |
| EXPECT_EQ(0U, receiver_.RtcpSent().nack_packets); |
| EXPECT_EQ(0U, receiver_.RtcpSent().nack_requests); |
| EXPECT_EQ(0U, receiver_.RtcpSent().unique_nack_requests); |
| EXPECT_EQ(0, receiver_.RtcpSent().UniqueNackRequestsInPercent()); |
| |
| // Receive module sends NACK request. |
| const uint16_t kNackLength = 4; |
| uint16_t nack_list[kNackLength] = {10, 11, 13, 18}; |
| EXPECT_EQ(0, receiver_.impl_->SendNACK(nack_list, kNackLength)); |
| EXPECT_EQ(1U, receiver_.RtcpSent().nack_packets); |
| EXPECT_EQ(4U, receiver_.RtcpSent().nack_requests); |
| EXPECT_EQ(4U, receiver_.RtcpSent().unique_nack_requests); |
| EXPECT_THAT(receiver_.LastNackListSent(), ElementsAre(10, 11, 13, 18)); |
| |
| // Send module receives the request. |
| EXPECT_EQ(1U, sender_.RtcpReceived().nack_packets); |
| EXPECT_EQ(4U, sender_.RtcpReceived().nack_requests); |
| EXPECT_EQ(4U, sender_.RtcpReceived().unique_nack_requests); |
| EXPECT_EQ(100, sender_.RtcpReceived().UniqueNackRequestsInPercent()); |
| |
| // Receive module sends new request with duplicated packets. |
| const int kStartupRttMs = 100; |
| clock_.AdvanceTimeMilliseconds(kStartupRttMs + 1); |
| const uint16_t kNackLength2 = 4; |
| uint16_t nack_list2[kNackLength2] = {11, 18, 20, 21}; |
| EXPECT_EQ(0, receiver_.impl_->SendNACK(nack_list2, kNackLength2)); |
| EXPECT_EQ(2U, receiver_.RtcpSent().nack_packets); |
| EXPECT_EQ(8U, receiver_.RtcpSent().nack_requests); |
| EXPECT_EQ(6U, receiver_.RtcpSent().unique_nack_requests); |
| EXPECT_THAT(receiver_.LastNackListSent(), ElementsAre(11, 18, 20, 21)); |
| |
| // Send module receives the request. |
| EXPECT_EQ(2U, sender_.RtcpReceived().nack_packets); |
| EXPECT_EQ(8U, sender_.RtcpReceived().nack_requests); |
| EXPECT_EQ(6U, sender_.RtcpReceived().unique_nack_requests); |
| EXPECT_EQ(75, sender_.RtcpReceived().UniqueNackRequestsInPercent()); |
| } |
| } // namespace webrtc |