writeInt4(parameterDisplacement, dst, dstIndex);
            dstIndex += 4;
        }
        writeInt4(dataCount, dst, dstIndex);
        dstIndex += 4;
        writeInt4(dataCount == 0 ? 0 : dataOffset, dst, dstIndex);
        dstIndex += 4;
        if (command == SMB_COM_NT_TRANSACT_SECONDARY) {
            writeInt4(dataDisplacement, dst, dstIndex);
            dstIndex += 4;

        assertEquals(4, SMBUtil.readInt2(buffer, 6));

        // Reserved field (2 bytes) - should be 0
        assertEquals(0, SMBUtil.readInt2(buffer, 8));

        // DataOffset field (2 bytes) - should be 24 (16 header + 4 name + 4 padding)
        assertEquals(24, SMBUtil.readInt2(buffer, 10));

        // DataLength field (4 bytes) - should be 32 (lease V1 structure size)

        assertEquals(4, SMBUtil.readInt2(buffer, 6)); // NameLength
        assertEquals(0, SMBUtil.readInt2(buffer, 8)); // Reserved
        assertEquals(24, SMBUtil.readInt2(buffer, 10)); // DataOffset
        assertEquals(52, SMBUtil.readInt4(buffer, 12)); // DataLength

        // Verify context name
        byte[] nameBytes = new byte[4];
        System.arraycopy(buffer, 16, nameBytes, 0, 4);

        SMBUtil.writeInt2(4, dst, dstIndex); // NameLength
        dstIndex += 2;

        SMBUtil.writeInt2(0, dst, dstIndex); // Reserved
        dstIndex += 2;

        SMBUtil.writeInt2(24, dst, dstIndex); // DataOffset (from start of context)
        dstIndex += 2;

        SMBUtil.writeInt4(52, dst, dstIndex); // DataLength
        dstIndex += 4;

        // Write context name

        SMBUtil.writeInt2(4, dst, dstIndex); // NameLength
        dstIndex += 2;

        SMBUtil.writeInt2(0, dst, dstIndex); // Reserved
        dstIndex += 2;

        SMBUtil.writeInt2(24, dst, dstIndex); // DataOffset (from start of context)
        dstIndex += 2;

        SMBUtil.writeInt4(32, dst, dstIndex); // DataLength
        dstIndex += 4;

        // Write context name

        SMBUtil.writeInt2(4, dst, dstIndex); // NameLength
        dstIndex += 2;

        SMBUtil.writeInt2(0, dst, dstIndex); // Reserved
        dstIndex += 2;

        SMBUtil.writeInt2(24, dst, dstIndex); // DataOffset (from start of context)
        dstIndex += 2;

        SMBUtil.writeInt4(STRUCTURE_SIZE, dst, dstIndex); // DataLength
        dstIndex += 4;

        // Write context name

            dstIndex += 4;
        }
        SMBUtil.writeInt4(this.dataCount, dst, dstIndex);
        dstIndex += 4;
        SMBUtil.writeInt4(this.dataCount == 0 ? 0 : this.dataOffset, dst, dstIndex);
        dstIndex += 4;
        if (this.getCommand() == SMB_COM_NT_TRANSACT_SECONDARY) {
            SMBUtil.writeInt4(this.dataDisplacement, dst, dstIndex);
            dstIndex += 4;

        public void setDataCount(int value) {
            this.dataCount = value;
        }

        public int getDataOffset() {
            return dataOffset;
        }

        public void setDataOffset(int value) {
            this.dataOffset = value;
        }

        public int getDataDisplacement() {
            return dataDisplacement;
        }

                int off = HEADER_LENGTH;
                /* WordCount thru dataOffset always 27 */
                readn(in, BUF, 4 + off, 27);
                off += 27;
                resp.decode(BUF, 4);
                /* EMC can send pad w/o data */
                final int pad = r.dataOffset - off;
                if (r.byteCount > 0 && pad > 0 && pad < 4) {

	}

	// Update size...
	binary.BigEndian.PutUint32(dst[dataOffset-4:dataOffset], uint32(len(dst)-dataOffset))

	// Add CRC of metadata as fixed size (5 bytes)
	// Prior to v1.3 this was variable sized.
	tmp = tmp[:5]
	tmp[0] = 0xce // muint32
	binary.BigEndian.PutUint32(tmp[1:], uint32(xxhash.Sum64(dst[dataOffset:])))
	dst = append(dst, tmp[:5]...)
	return append(dst, x.data...), nil
}