this.writeMode = writeMode;
    }


    @Override
    protected int getBatchLimit ( Configuration cfg, byte cmd ) {
        if ( cmd == SMB_COM_READ_ANDX ) {
            return cfg.getBatchLimit("WriteAndX.ReadAndX");
        }
        if ( cmd == SMB_COM_CLOSE ) {
            return cfg.getBatchLimit("WriteAndX.Close");
        }
        return 0;
    }


    @Override

        dataLength = len;
        digest = null; /* otherwise recycled commands
                        * like writeandx will choke if session
                        * closes in between */
    }
    int getBatchLimit( byte command ) {
        if( command == SMB_COM_READ_ANDX ) {
            return READ_ANDX_BATCH_LIMIT;
        }
        if( command == SMB_COM_CLOSE ) {
            return CLOSE_BATCH_LIMIT;
        }