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From: Michael Froman <mfroman@mozilla.com>
Date: Mon, 18 Dec 2023 15:00:00 +0000
Subject: Bug 1867099 - revert libwebrtc 8602f604e0. r=bwc
Upstream 8602f604e0 removed code sending BYEs which breaks some of
our wpt. They've opened a bug for a real fix here:
I've opened Bug 1870643 to track the real fix and upstream bug.
---
call/rtp_video_sender.cc | 1 +
modules/rtp_rtcp/source/rtcp_sender.cc | 19 +++++++++++++++++--
.../rtp_rtcp/source/rtcp_sender_unittest.cc | 5 +++--
modules/rtp_rtcp/source/rtp_rtcp_impl.cc | 1 +
modules/rtp_rtcp/source/rtp_rtcp_interface.h | 2 +-
5 files changed, 23 insertions(+), 5 deletions(-)
diff --git a/call/rtp_video_sender.cc b/call/rtp_video_sender.cc
index e97112c617..b92d915ad8 100644
--- a/call/rtp_video_sender.cc
+++ b/call/rtp_video_sender.cc
@@ -514,6 +514,7 @@ void RtpVideoSender::SetActiveModulesLocked(bool sending) {
active_ = sending;
for (size_t i = 0; i < rtp_streams_.size(); ++i) {
RtpRtcpInterface& rtp_module = *rtp_streams_[i].rtp_rtcp;
+ // Sends a kRtcpByeCode when going from true to false.
rtp_module.SetSendingStatus(sending);
rtp_module.SetSendingMediaStatus(sending);
if (sending) {
diff --git a/modules/rtp_rtcp/source/rtcp_sender.cc b/modules/rtp_rtcp/source/rtcp_sender.cc
index 051d77c4f7..b545633f25 100644
--- a/modules/rtp_rtcp/source/rtcp_sender.cc
+++ b/modules/rtp_rtcp/source/rtcp_sender.cc
@@ -223,8 +223,23 @@ bool RTCPSender::Sending() const {
void RTCPSender::SetSendingStatus(const FeedbackState& feedback_state,
bool sending) {
- MutexLock lock(&mutex_rtcp_sender_);
- sending_ = sending;
+ bool sendRTCPBye = false;
+ {
+ MutexLock lock(&mutex_rtcp_sender_);
+
+ if (method_ != RtcpMode::kOff) {
+ if (sending == false && sending_ == true) {
+ // Trigger RTCP bye
+ sendRTCPBye = true;
+ }
+ }
+ sending_ = sending;
+ }
+ if (sendRTCPBye) {
+ if (SendRTCP(feedback_state, kRtcpBye) != 0) {
+ RTC_LOG(LS_WARNING) << "Failed to send RTCP BYE";
+ }
+ }
}
void RTCPSender::SetNonSenderRttMeasurement(bool enabled) {
diff --git a/modules/rtp_rtcp/source/rtcp_sender_unittest.cc b/modules/rtp_rtcp/source/rtcp_sender_unittest.cc
index 3a77df5e3e..deda5f71c8 100644
--- a/modules/rtp_rtcp/source/rtcp_sender_unittest.cc
+++ b/modules/rtp_rtcp/source/rtcp_sender_unittest.cc
@@ -347,12 +347,13 @@ TEST_F(RtcpSenderTest, SendBye) {
EXPECT_EQ(kSenderSsrc, parser()->bye()->sender_ssrc());
}
-TEST_F(RtcpSenderTest, StopSendingDoesNotTriggersBye) {
+TEST_F(RtcpSenderTest, StopSendingTriggersBye) {
auto rtcp_sender = CreateRtcpSender(GetDefaultConfig());
rtcp_sender->SetRTCPStatus(RtcpMode::kReducedSize);
rtcp_sender->SetSendingStatus(feedback_state(), true);
rtcp_sender->SetSendingStatus(feedback_state(), false);
- EXPECT_EQ(0, parser()->bye()->num_packets());
+ EXPECT_EQ(1, parser()->bye()->num_packets());
+ EXPECT_EQ(kSenderSsrc, parser()->bye()->sender_ssrc());
}
TEST_F(RtcpSenderTest, SendFir) {
diff --git a/modules/rtp_rtcp/source/rtp_rtcp_impl.cc b/modules/rtp_rtcp/source/rtp_rtcp_impl.cc
index 83d507357d..7286088e2b 100644
--- a/modules/rtp_rtcp/source/rtp_rtcp_impl.cc
+++ b/modules/rtp_rtcp/source/rtp_rtcp_impl.cc
@@ -321,6 +321,7 @@ RTCPSender::FeedbackState ModuleRtpRtcpImpl::GetFeedbackState() {
int32_t ModuleRtpRtcpImpl::SetSendingStatus(const bool sending) {
if (rtcp_sender_.Sending() != sending) {
+ // Sends RTCP BYE when going from true to false
rtcp_sender_.SetSendingStatus(GetFeedbackState(), sending);
}
return 0;
diff --git a/modules/rtp_rtcp/source/rtp_rtcp_interface.h b/modules/rtp_rtcp/source/rtp_rtcp_interface.h
index f14b7ca244..865f523e36 100644
--- a/modules/rtp_rtcp/source/rtp_rtcp_interface.h
+++ b/modules/rtp_rtcp/source/rtp_rtcp_interface.h
@@ -283,7 +283,7 @@ class RtpRtcpInterface : public RtcpFeedbackSenderInterface {
// Returns the FlexFEC SSRC, if there is one.
virtual std::optional<uint32_t> FlexfecSsrc() const = 0;
- // Sets sending status.
+ // Sets sending status. Sends kRtcpByeCode when going from true to false.
// Returns -1 on failure else 0.
virtual int32_t SetSendingStatus(bool sending) = 0;