Reset channel observer in resetState (#449)

* Reset channel observer in resetState

* Spelling fix

pkg/rtc/transport.go

@@ -384,7 +384,7 @@ func (t *PCTransport) preparePC(previousAnswer webrtc.SessionDescription) error
 	t.pc.SetLocalDescription(offer)
 
 	//
-	// Simulcate client side peer connection and set DTLS role from previous answer.
+	// Simulate client side peer connection and set DTLS role from previous answer.
 	// Role needs to be set properly (one side needs to be server and the other side
 	// eeds to be the client) for DTLS connection to form properly. As this is
 	// trying to replicate previous setup, read from previous answer and use that role.

pkg/sfu/streamallocator.go

@@ -242,6 +242,7 @@ func (s *StreamAllocator) SetTrackPriority(downTrack *DownTrack, priority uint8)
 }
 
 func (s *StreamAllocator) resetState() {
+	s.channelObserver.Reset()
 	s.resetProbe()
 
 	s.state = StateStable