Close interceptor after PeerConnection is closed

interceptor_test.go

@@ -187,7 +187,8 @@ func Test_Interceptor_BindUnbind(t *testing.T) {
 		}
 	}()
 
-	closePairNow(t, sender, receiver)
+	assert.NoError(t, sender.GracefulClose())
+	assert.NoError(t, receiver.GracefulClose())
 
 	// Bind/UnbindLocal/RemoteStream should be called from one side.
 	if cnt := atomic.LoadUint32(&cntBindLocalStream); cnt != 1 {

peerconnection.go

@@ -2209,8 +2209,6 @@ func (pc *PeerConnection) close(shouldGracefullyClose bool) error {
 	// https://www.w3.org/TR/webrtc/#dom-rtcpeerconnection-close (step #3)
 	pc.signalingState.Set(SignalingStateClosed)
 
-	closeErrs = append(closeErrs, pc.api.interceptor.Close())
-
 	// https://www.w3.org/TR/webrtc/#dom-rtcpeerconnection-close (step #4)
 	pc.mu.Lock()
 	for _, t := range pc.rtpTransceivers {
@@ -2247,6 +2245,9 @@ func (pc *PeerConnection) close(shouldGracefullyClose bool) error {
 
 	closeErrs = append(closeErrs, doGracefulCloseOps()...)
 
+	// Interceptor closes at the end to prevent Bind from being called after interceptor is closed
+	closeErrs = append(closeErrs, pc.api.interceptor.Close())
+
 	return util.FlattenErrs(closeErrs)
 }