Process matching sender report only. (#2540)

pkg/rtc/mediatrack.go

@@ -206,9 +206,10 @@ func (t *MediaTrack) AddReceiver(receiver *webrtc.RTPReceiver, track *webrtc.Tra
 		for _, pkt := range pkts {
 			switch pkt := pkt.(type) {
 			case *rtcp.SourceDescription:
-			// do nothing for now
 			case *rtcp.SenderReport:
-				buff.SetSenderReportData(pkt.RTPTime, pkt.NTPTime)
+				if pkt.SSRC == uint32(track.SSRC()) {
+					buff.SetSenderReportData(pkt.RTPTime, pkt.NTPTime)
+				}
 			case *rtcp.ExtendedReport:
 			rttFromXR:
 				for _, report := range pkt.Reports {

pkg/rtc/transport.go

@@ -326,8 +326,7 @@ func newPeerConnection(params TransportParams, onBandwidthEstimator func(estimat
 	} else {
 		// sfu only use interceptor to send XR but don't read response from it (use buffer instead),
 		// so use a empty callback here
-		ir.Add(lkinterceptor.NewRTTFromXRFactory(func(rtt uint32) {
-		}))
+		ir.Add(lkinterceptor.NewRTTFromXRFactory(func(rtt uint32) {}))
 	}
 	if len(params.SimTracks) > 0 {
 		f, err := NewUnhandleSimulcastInterceptorFactory(UnhandleSimulcastTracks(params.SimTracks))