Ignore packets sent on old network route when receiving feedback.

webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h

 /*
  *  Copyright (c) 2012 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.
  */
 
@@ skipping 233 matching lines @@
   virtual ~RtcpBandwidthObserver() {}
 };
 
 struct PacketFeedback {
   PacketFeedback(int64_t arrival_time_ms, uint16_t sequence_number)
       : PacketFeedback(-1,
                        arrival_time_ms,
                        -1,
                        sequence_number,
                        0,
+                       0,
+                       0,
                        PacedPacketInfo()) {}
 
   PacketFeedback(int64_t arrival_time_ms,
                  int64_t send_time_ms,
                  uint16_t sequence_number,
                  size_t payload_size,
                  const PacedPacketInfo& pacing_info)
       : PacketFeedback(-1,
                        arrival_time_ms,
                        send_time_ms,
                        sequence_number,
                        payload_size,
+                       0,
+                       0,
                        pacing_info) {}
 
   PacketFeedback(int64_t creation_time_ms,
                  int64_t arrival_time_ms,
                  int64_t send_time_ms,
                  uint16_t sequence_number,
                  size_t payload_size,
+                 uint16_t local_net_id,
+                 uint16_t remote_net_id,
                  const PacedPacketInfo& pacing_info)
       : creation_time_ms(creation_time_ms),
         arrival_time_ms(arrival_time_ms),
         send_time_ms(send_time_ms),
         sequence_number(sequence_number),
         payload_size(payload_size),
+        local_net_id(local_net_id),
+        remote_net_id(remote_net_id),
         pacing_info(pacing_info) {}
 
   static constexpr int kNotAProbe = -1;
   static constexpr int64_t kNotReceived = -1;
 
   // NOTE! The variable |creation_time_ms| is not used when testing equality.
   //       This is due to |creation_time_ms| only being used by SendTimeHistory
   //       for book-keeping, and is of no interest outside that class.
   // TODO(philipel): Remove |creation_time_ms| from PacketFeedback when cleaning
   //                 up SendTimeHistory.
@@ skipping 11 matching lines @@
   // is used.
   int64_t arrival_time_ms;
   // Time corresponding to when the packet was sent, timestamped with the
   // sender's clock.
   int64_t send_time_ms;
   // Packet identifier, incremented with 1 for every packet generated by the
   // sender.
   uint16_t sequence_number;
   // Size of the packet excluding RTP headers.
   size_t payload_size;
+  // The network route ids that this packet is associated with.
+  uint16_t local_net_id;
+  uint16_t remote_net_id;
   // Pacing information about this packet.
   PacedPacketInfo pacing_info;
 };
 
 class TransportFeedbackObserver {
  public:
   TransportFeedbackObserver() {}
   virtual ~TransportFeedbackObserver() {}
 
   // Note: Transport-wide sequence number as sequence number.
@@ skipping 87 matching lines @@
 class TransportSequenceNumberAllocator {
  public:
   TransportSequenceNumberAllocator() {}
   virtual ~TransportSequenceNumberAllocator() {}
 
   virtual uint16_t AllocateSequenceNumber() = 0;
 };
 
 }  // namespace webrtc
 #endif  // WEBRTC_MODULES_RTP_RTCP_INCLUDE_RTP_RTCP_DEFINES_H_