internal void FireOnSkypeApp2AppDatagram(SktSkype sender, OnSkypeApp2AppDatagramArgs e)
 {
     if (OnSkypeApp2AppDatagram == null) return; // No event assigned
     if (gui == null) { FireCallbackInSeparateThread(e, OnSkypeApp2AppDatagramInNewThread); return; }
     gui.BeginInvoke(OnSkypeApp2AppDatagram, new object[] { sender, e }); // Synchronizing to gui thread
 }
 internal void ProcessOnSkypeApp2AppDatagram(SktSkype sender)
 {
     if (skypeRef.logging) skypeRef.Log("Processing event OnSkypeApp2AppDatagram");
     OnSkypeApp2AppDatagramArgs args = new OnSkypeApp2AppDatagramArgs();
     int marker = 0;
     int typeTag = 0;
     do
     {
     typeTag = skypeRef.transport.ReadByte();
     if (typeTag == 122) break;
     marker = skypeRef.transport.ReadByte();
     switch (marker)
     {
         case 1:
             args.appname = skypeRef.decoder.DecodeString();
             break;
         case 2:
             args.stream = skypeRef.decoder.DecodeString();
             break;
         case 3:
             args.data = skypeRef.decoder.DecodeBinary();
             break;
         default:
             if (marker != 122) skypeRef.Error(String.Format("Invalid event argument tag {0} in OnSkypeApp2AppDatagram", marker));
             break;
     }
     } while (marker != 'z');
     skypeRef.transport.ResumeSocketReaderFromEvent();
     args.senderobj = sender;
     FireOnSkypeApp2AppDatagram(sender, args);
 }