void IObservable <ListenerStartedArgs> .Notify(ListenerStartedArgs eventArgs)
 {
     if (ReadyForConnection != null)
     {
         ReadyForConnection.Invoke(this, eventArgs);
     }
 }
        void IObserver <ListenerStartedArgs> .OnNotified(object sender, ListenerStartedArgs eventArgs)
        {
            LocalEndPoint = eventArgs.LocalEndPoint;

            if (ReadyForConnection != null)
            {
                ReadyForConnection.Invoke(this, eventArgs);
            }
        }