off += 27;
                resp.decode(buffer, 4);
                /* EMC can send pad w/o data */
                final int pad = r.getDataOffset() - off;
                if (r.getByteCount() > 0 && pad > 0 && pad < 4) {
                    readn(this.in, buffer, 4 + off, pad);
                }

                if (r.getDataLength() > 0) {