cleanup();
        }
        return inUse;
    }


    @Override
    public byte[] getChallenge ( CIFSContext tf, Address dc ) throws SmbException {
        return getChallenge(tf, dc, 0);
    }


    @Override
    public byte[] getChallenge ( CIFSContext tf, Address dc, int port ) throws SmbException {
        try ( SmbTransportInternal trans = tf.getTransportPool()