TURN сервер для выхода за сложные NAT

sfu/forwarding.go

@@ -12,8 +12,15 @@ import (
 var (
 	pendingMu         sync.Mutex
 	pendingCandidates = map[string][]webrtc.ICECandidateInit{} // key: roomID|peerID
+	renegMu           sync.Map
 )
 
+func getRenegLock(roomID, peerID string) *sync.Mutex {
+	k := peerKey(roomID, peerID)
+	v, _ := renegMu.LoadOrStore(k, &sync.Mutex{})
+	return v.(*sync.Mutex)
+}
+
 func peerKey(roomID, peerID string) string {
 	return roomID + "|" + peerID
 }
@@ -92,6 +99,15 @@ func SetupForwardingForPeer(roomID string, publisherPeerID string, publisherPC *
 }
 
 func renegotiatePeer(roomID, peerID string, pc *webrtc.PeerConnection) error {
+	lock := getRenegLock(roomID, peerID)
+	lock.Lock()
+	defer lock.Unlock()
+
+	// Не начинаем новую negotiation поверх текущей
+	if pc.SignalingState() != webrtc.SignalingStateStable {
+		return nil
+	}
+
 	offer, err := pc.CreateOffer(nil)
 	if err != nil {
 		return err