SmbComReadAndXResponse r = (SmbComReadAndXResponse) resp;
                int off = SMB1_HEADER_LENGTH;
                /* WordCount thru dataOffset always 27 */
                readn(this.in, buffer, 4 + off, 27);
                off += 27;
                resp.decode(buffer, 4);
                /* EMC can send pad w/o data */
                int pad = r.getDataOffset() - off;