[fix] fix crash due to thread releasing

src/transport/channel/rtp_audio_sender.cpp

@@ -12,6 +12,7 @@ RtpAudioSender::RtpAudioSender() { SetPeriod(std::chrono::milliseconds(5)); }
 RtpAudioSender::RtpAudioSender(std::shared_ptr<IOStatistics> io_statistics)
     : ssrc_(GenerateUniqueSsrc()), io_statistics_(io_statistics) {
   SetPeriod(std::chrono::milliseconds(5));
+  SetThreadName("RtpAudioSender");
 }
 
 RtpAudioSender::~RtpAudioSender() {

src/transport/channel/rtp_data_sender.cpp

@@ -12,6 +12,7 @@ RtpDataSender::RtpDataSender() {}
 RtpDataSender::RtpDataSender(std::shared_ptr<IOStatistics> io_statistics)
     : ssrc_(GenerateUniqueSsrc()), io_statistics_(io_statistics) {
   SetPeriod(std::chrono::milliseconds(5));
+  SetThreadName("RtpDataSender");
 }
 
 RtpDataSender::~RtpDataSender() {

src/transport/channel/rtp_video_receiver.cpp

@@ -17,6 +17,7 @@
 RtpVideoReceiver::RtpVideoReceiver(std::shared_ptr<SystemClock> clock)
     : ssrc_(GenerateUniqueSsrc()),
       active_remb_module_(nullptr),
+      is_running_(true),
       receive_side_congestion_controller_(
           clock_,
           [this](std::vector<std::unique_ptr<RtcpPacket>> packets) {
@@ -35,6 +36,7 @@ RtpVideoReceiver::RtpVideoReceiver(std::shared_ptr<SystemClock> clock)
                              clock->CurrentTimeMs()),
       clock_(webrtc::Clock::GetWebrtcClockShared(clock)) {
   SetPeriod(std::chrono::milliseconds(5));
+  SetThreadName("RtpVideoReceiver");
   rtcp_thread_ = std::thread(&RtpVideoReceiver::RtcpThread, this);
 }
 
@@ -42,6 +44,7 @@ RtpVideoReceiver::RtpVideoReceiver(std::shared_ptr<SystemClock> clock,
                                    std::shared_ptr<IOStatistics> io_statistics)
     : io_statistics_(io_statistics),
       ssrc_(GenerateUniqueSsrc()),
+      is_running_(true),
       receive_side_congestion_controller_(
           clock_,
           [this](std::vector<std::unique_ptr<RtcpPacket>> packets) {
@@ -58,6 +61,7 @@ RtpVideoReceiver::RtpVideoReceiver(std::shared_ptr<SystemClock> clock,
       nack_(std::make_unique<NackRequester>(clock_, this, this)),
       clock_(webrtc::Clock::GetWebrtcClockShared(clock)) {
   SetPeriod(std::chrono::milliseconds(5));
+  SetThreadName("RtpVideoReceiver");
   rtcp_thread_ = std::thread(&RtpVideoReceiver::RtcpThread, this);
 
 #ifdef SAVE_RTP_RECV_STREAM
@@ -69,11 +73,7 @@ RtpVideoReceiver::RtpVideoReceiver(std::shared_ptr<SystemClock> clock,
 }
 
 RtpVideoReceiver::~RtpVideoReceiver() {
-  rtcp_stop_.store(true);
-  rtcp_cv_.notify_all();
-  if (rtcp_thread_.joinable()) {
-    rtcp_thread_.join();
-  }
+  StopRtcp();
 
   SSRCManager::Instance().DeleteSsrc(ssrc_);
 
@@ -670,6 +670,10 @@ void RtpVideoReceiver::CheckIsTimeUpdateNack(uint32_t now) {
 }
 
 bool RtpVideoReceiver::Process() {
+  if (!is_running_.load()) {
+    return false;
+  }
+
   if (!compelete_video_frame_queue_.isEmpty()) {
     std::optional<ReceivedFrame> video_frame =
         compelete_video_frame_queue_.pop();
@@ -773,6 +777,19 @@ void RtpVideoReceiver::SendRR() {
   last_report_cumulative_loss_ = cumulative_loss_;
 }
 
+void RtpVideoReceiver::StopRtcp() {
+  is_running_.store(false);
+  if (rtcp_stop_.load()) {
+    return;
+  }
+
+  rtcp_stop_.store(true);
+  rtcp_cv_.notify_all();
+  if (rtcp_thread_.joinable()) {
+    rtcp_thread_.join();
+  }
+}
+
 void RtpVideoReceiver::RtcpThread() {
   while (!rtcp_stop_.load()) {
     std::unique_lock<std::mutex> lock(rtcp_mtx_);

src/transport/channel/rtp_video_receiver.h

@@ -48,6 +48,9 @@ class RtpVideoReceiver : public ThreadBase,
   }
   uint32_t GetSsrc() { return ssrc_; }
   uint32_t GetRemoteSsrc() { return remote_ssrc_; }
+
+  void StopRtcp();
+
   void OnSenderReport(const SenderReport& sender_report);
 
  private:
@@ -134,6 +137,7 @@ class RtpVideoReceiver : public ThreadBase,
   std::atomic<bool> rtcp_stop_ = false;
   int rtcp_rr_interval_ms_ = 5000;
   int rtcp_tcc_interval_ms_ = 200;
+  std::atomic<bool> is_running_;
 
  private:
   uint32_t ssrc_ = 0;

src/transport/channel/rtp_video_sender.cpp

@@ -18,6 +18,7 @@ RtpVideoSender::RtpVideoSender(std::shared_ptr<SystemClock> clock,
       io_statistics_(io_statistics),
       clock_(webrtc::Clock::GetWebrtcClockShared(clock)) {
   SetPeriod(std::chrono::milliseconds(5));
+  SetThreadName("RtpVideoSender");
 #ifdef SAVE_RTP_SENT_STREAM
   file_rtp_sent_ = fopen("rtp_sent_stream.h264", "w+b");
   if (!file_rtp_sent_) {

src/transport/channel/video_channel_receive.cpp

@@ -46,6 +46,7 @@ void VideoChannelReceive::Initialize(rtp::PAYLOAD_TYPE payload_type) {
 
 void VideoChannelReceive::Destroy() {
   if (rtp_video_receiver_) {
+    rtp_video_receiver_->StopRtcp();
     rtp_video_receiver_->Stop();
   }
 }

src/transport/channel/video_channel_send.cpp

@@ -106,7 +106,7 @@ void VideoChannelSend::Destroy() {
 }
 
 int VideoChannelSend::SendVideo(std::shared_ptr<EncodedFrame> encoded_frame) {
-  if (rtp_video_sender_ && rtp_packetizer_) {
+  if (rtp_video_sender_ && rtp_packetizer_ && packet_sender_) {
     int32_t rtp_timestamp =
         delta_ntp_internal_ms_ +
         static_cast<uint32_t>(encoded_frame->CapturedTimestamp() / 1000);
@@ -158,7 +158,9 @@ int32_t VideoChannelSend::ReSendPacket(uint16_t packet_id) {
   std::vector<std::unique_ptr<webrtc::RtpPacketToSend>> packets;
   packets.emplace_back(std::move(packet));
 
-  packet_sender_->EnqueueRtpPacket(std::move(packets));
+  if (packet_sender_) {
+    packet_sender_->EnqueueRtpPacket(std::move(packets));
+  }
 
   return packet_size;
 }

src/transport/ice_transport.cpp

@@ -434,6 +434,10 @@ int IceTransport::DestroyIceTransmission() {
     ice_io_statistics_->Stop();
   }
 
+  if (ice_transport_controller_) {
+    ice_transport_controller_->Destroy();
+  }
+
   return ice_agent_->DestroyIceAgent();
 }
 

src/transport/ice_transport_controller.cpp

@@ -19,8 +19,10 @@ IceTransportController::IceTransportController(
       audio_codec_inited_(false),
       load_nvcodec_dll_success_(false),
       hardware_acceleration_(false),
+      is_running_(true),
       congestion_window_size_(DataSize::PlusInfinity()) {
   SetPeriod(std::chrono::milliseconds(25));
+  SetThreadName("IceTransportController");
 }
 
 IceTransportController::~IceTransportController() {
@@ -92,25 +94,38 @@ void IceTransportController::Create(
         OnSentRtpPacket(packet);
       });
 
-  packet_sender_->SetGeneratePaddingFunc(
-      [this](uint32_t size, int64_t captured_timestamp_us)
-          -> std::vector<std::unique_ptr<RtpPacket>> {
-        return video_channel_send_->GeneratePadding(size,
-                                                    captured_timestamp_us);
-      });
+  if (packet_sender_) {
+    packet_sender_->SetGeneratePaddingFunc(
+        [this](uint32_t size, int64_t captured_timestamp_us)
+            -> std::vector<std::unique_ptr<RtpPacket>> {
+          return video_channel_send_->GeneratePadding(size,
+                                                      captured_timestamp_us);
+        });
+  }
 
   audio_channel_send_ = std::make_unique<AudioChannelSend>(
       ice_agent, packet_sender_, ice_io_statistics);
   data_channel_send_ = std::make_unique<DataChannelSend>(
       ice_agent, packet_sender_, ice_io_statistics);
 
-  video_channel_send_->Initialize(video_codec_payload_type);
-  audio_channel_send_->Initialize(rtp::PAYLOAD_TYPE::OPUS);
-  data_channel_send_->Initialize(rtp::PAYLOAD_TYPE::DATA);
+  if (video_channel_send_) {
+    video_channel_send_->Initialize(video_codec_payload_type);
+    video_channel_send_->SetEnqueuePacketsFunc(
+        [this](std::vector<std::unique_ptr<webrtc::RtpPacketToSend>>& packets)
+            -> void {
+          if (packet_sender_) {
+            packet_sender_->EnqueuePackets(std::move(packets));
+          }
+        });
+  }
 
-  video_channel_send_->SetEnqueuePacketsFunc(
-      [this](std::vector<std::unique_ptr<webrtc::RtpPacketToSend>>& packets)
-          -> void { packet_sender_->EnqueuePackets(std::move(packets)); });
+  if (audio_channel_send_) {
+    audio_channel_send_->Initialize(rtp::PAYLOAD_TYPE::OPUS);
+  }
+
+  if (data_channel_send_) {
+    data_channel_send_->Initialize(rtp::PAYLOAD_TYPE::DATA);
+  }
 
   std::weak_ptr<IceTransportController> weak_self = shared_from_this();
   video_channel_receive_ = std::make_unique<VideoChannelReceive>(
@@ -143,6 +158,8 @@ void IceTransportController::Create(
 }
 
 void IceTransportController::Destroy() {
+  is_running_.store(false);
+
   if (video_channel_send_) {
     video_channel_send_->Destroy();
   }
@@ -166,6 +183,8 @@ void IceTransportController::Destroy() {
   if (data_channel_receive_) {
     data_channel_receive_->Destroy();
   }
+
+  Stop();
 }
 
 int IceTransportController::SendVideo(const XVideoFrame* video_frame) {
@@ -256,6 +275,9 @@ void IceTransportController::UpdateNetworkAvaliablity(bool network_available) {
         webrtc::Timestamp::Millis(webrtc_clock_->TimeInMilliseconds());
     msg.network_available = network_available;
     controller_->OnNetworkAvailability(msg);
+  }
+
+  if (packet_sender_) {
     packet_sender_->EnsureStarted();
   }
 }
@@ -484,11 +506,13 @@ void IceTransportController::OnReceiverReport(
   msg.start_time = last_report_block_time_;
   msg.end_time = now;
 
-  task_queue_->PostTask([this, msg]() mutable {
-    if (controller_) {
-      PostUpdates(controller_->OnTransportLossReport(msg));
-    }
-  });
+  if (task_queue_) {
+    task_queue_->PostTask([this, msg]() mutable {
+      if (controller_) {
+        PostUpdates(controller_->OnTransportLossReport(msg));
+      }
+    });
+  }
 
   last_report_block_time_ = now;
 }
@@ -498,7 +522,7 @@ void IceTransportController::OnCongestionControlFeedback(
   std::optional<webrtc::TransportPacketsFeedback> feedback_msg =
       transport_feedback_adapter_.ProcessCongestionControlFeedback(
           feedback, Timestamp::Micros(clock_->CurrentTimeUs()));
-  if (feedback_msg.has_value()) {
+  if (feedback_msg.has_value() && task_queue_) {
     task_queue_->PostTask([this, feedback_msg]() mutable {
       if (controller_) {
         PostUpdates(
@@ -543,12 +567,12 @@ void IceTransportController::PostUpdates(webrtc::NetworkControlUpdate update) {
     UpdateCongestedState();
   }
 
-  if (update.pacer_config) {
+  if (update.pacer_config && packet_sender_) {
     packet_sender_->SetPacingRates(update.pacer_config->data_rate(),
                                    update.pacer_config->pad_rate());
   }
 
-  if (!update.probe_cluster_configs.empty()) {
+  if (!update.probe_cluster_configs.empty() && packet_sender_) {
     packet_sender_->CreateProbeClusters(
         std::move(update.probe_cluster_configs));
   }
@@ -559,7 +583,7 @@ void IceTransportController::PostUpdates(webrtc::NetworkControlUpdate update) {
                                     ? target_bitrate_
                                     : update.target_rate->target_rate.bps())
                              : target_bitrate_;
-    if (target_bitrate != target_bitrate_) {
+    if (target_bitrate != target_bitrate_ && video_encoder_) {
       target_bitrate_ = target_bitrate;
       int width, height, target_width, target_height;
       video_encoder_->GetResolution(&width, &height);
@@ -591,7 +615,9 @@ void IceTransportController::UpdateControlState() {
 void IceTransportController::UpdateCongestedState() {
   if (auto update = GetCongestedStateUpdate()) {
     is_congested_ = update.value();
-    packet_sender_->SetCongested(update.value());
+    if (packet_sender_) {
+      packet_sender_->SetCongested(update.value());
+    }
   }
 }
 
@@ -603,11 +629,17 @@ std::optional<bool> IceTransportController::GetCongestedStateUpdate() const {
 }
 
 bool IceTransportController::Process() {
-  task_queue_->PostTask([this]() mutable {
-    webrtc::ProcessInterval msg;
-    msg.at_time = Timestamp::Millis(webrtc_clock_->TimeInMilliseconds());
-    PostUpdates(controller_->OnProcessInterval(msg));
-  });
+  if (!is_running_.load()) {
+    return false;
+  }
+
+  if (task_queue_ && controller_) {
+    task_queue_->PostTask([this]() mutable {
+      webrtc::ProcessInterval msg;
+      msg.at_time = Timestamp::Millis(webrtc_clock_->TimeInMilliseconds());
+      PostUpdates(controller_->OnProcessInterval(msg));
+    });
+  }
 
   return true;
 }

src/transport/ice_transport_controller.h

@@ -112,6 +112,7 @@ class IceTransportController
   std::shared_ptr<PacketSenderImp> packet_sender_ = nullptr;
   std::string remote_user_id_;
   void *user_data_ = nullptr;
+  std::atomic<bool> is_running_;
 
  private:
   std::shared_ptr<SystemClock> clock_;

src/transport/packet_sender/packet_sender_imp.cpp

@@ -22,7 +22,7 @@ PacketSenderImp::PacketSenderImp(std::shared_ptr<IceAgent> ice_agent,
       last_call_time_(webrtc::Timestamp::Millis(0)),
       task_queue_(task_queue) {}
 
-PacketSenderImp::~PacketSenderImp() {}
+PacketSenderImp::~PacketSenderImp() { is_shutdown_ = true; }
 
 std::vector<std::unique_ptr<webrtc::RtpPacketToSend>>
 PacketSenderImp::GeneratePadding(webrtc::DataSize size) {