@Override
    public boolean available()
    {
        // It would take a separate thread or an NIO Selector based implementation to get this
        // to work.  If a polling strategy is never employed by callers then it doesn't
        // seem worth it to implement all of that just for this method.
        checkClosed();
        return false;
    }
This always returns false since the simple DatagramSocket usage
 cannot be run in a non-blocking way.
jme3-networking/src/main/java/com/jme3/network/kernel/udp/UdpConnector.java