Add signal message

client/internal/peer/conn.go

@@ -226,7 +226,7 @@ func (conn *Conn) Open(engineCtx context.Context) error {
 }
 
 // Close closes this peer Conn issuing a close event to the Conn closeCh
-func (conn *Conn) Close() {
+func (conn *Conn) Close(graceful bool) {
 	conn.mu.Lock()
 	defer conn.wgWatcherWg.Wait()
 	defer conn.mu.Unlock()
@@ -236,6 +236,10 @@ func (conn *Conn) Close() {
 		return
 	}
 
+	if graceful {
+		conn.signaler.SignalIdle(conn.config.Key)
+	}
+
 	conn.Log.Infof("close peer connection")
 	conn.ctxCancel()
 

client/internal/peer/signaler.go

@@ -68,3 +68,13 @@ func (s *Signaler) signalOfferAnswer(offerAnswer OfferAnswer, remoteKey string,
 
 	return nil
 }
+
+func (s *Signaler) SignalIdle(remoteKey string) error {
+	return s.signal.Send(&sProto.Message{
+		Key:       s.wgPrivateKey.PublicKey().String(),
+		RemoteKey: remoteKey,
+		Body: &sProto.Body{
+			Type: sProto.Body_GO_IDLE,
+		},
+	})
+}