}

    static long readInt8(final byte[] src, final int srcIndex) {
        return (readInt4(src, srcIndex) & 0xFFFFFFFFL) + ((long) readInt4(src, srcIndex + 4) << 32);
    }

    static void writeInt8(long val, final byte[] dst, int dstIndex) {
        dst[dstIndex] = (byte) val;
        dstIndex++;
        dst[dstIndex] = (byte) (val >>= 8);
        dst[++dstIndex] = (byte) (val >>= 8);

        dstIndex += 4;
        writeInt4(rootDirectoryFid, dst, dstIndex);
        dstIndex += 4;
        writeInt4(desiredAccess, dst, dstIndex);
        dstIndex += 4;
        writeInt8(allocationSize, dst, dstIndex);
        dstIndex += 8;
        writeInt4(extFileAttributes, dst, dstIndex);
        dstIndex += 4;
        writeInt4(shareAccess, dst, dstIndex);
        dstIndex += 4;

        writeInt4(buffer, dataOffset + 16, leaseState);  // LeaseState
        writeInt4(buffer, dataOffset + 20, leaseFlags);  // LeaseFlags
        writeInt8(buffer, dataOffset + 24, leaseDuration);  // LeaseDuration
        
        if (isV2()) {
            System.arraycopy(parentLeaseKey.getKey(), 0, buffer, dataOffset + 32, 16);  // ParentLeaseKey

    protected int writeDataWireFormat(final byte[] dst, int dstIndex) {
        final int start = dstIndex;
        dstIndex += this.info.encode(dst, dstIndex);

        /* 6 zeros observed with NT */
        SMBUtil.writeInt8(0L, dst, dstIndex);
        dstIndex += 6;

        /*
         * Also observed 4 byte alignment but we stick
         * with the default for jCIFS which is 2
         */

        return dstIndex - start;

        dstIndex += 4;

        final int offsetOffset = dstIndex;
        dstIndex += 2;
        SMBUtil.writeInt2(this.token != null ? this.token.length : 0, dst, dstIndex);
        dstIndex += 2;
        SMBUtil.writeInt8(this.previousSessionId, dst, dstIndex);
        dstIndex += 8;
        SMBUtil.writeInt2(dstIndex - getHeaderStart(), dst, offsetOffset);

        dstIndex += pad8(dstIndex);

        if (this.token != null) {

            // Set up async message fields
            SMBUtil.writeInt4(ServerMessageBlock2.SMB2_FLAGS_ASYNC_COMMAND, buffer, 16); // flags with async
            SMBUtil.writeInt8(789L, buffer, 32); // async ID
            SMBUtil.writeInt8(456L, buffer, 40); // session ID
            return buffer;
        }

        private byte[] createErrorResponseMessage() {
            byte[] buffer = new byte[256];

        // if SMB 3.11 support negotiateContextOffset/negotiateContextCount
        int negotitateContextOffsetOffset = 0;
        if (this.negotiateContexts == null || this.negotiateContexts.length == 0) {
            SMBUtil.writeInt8(0, dst, dstIndex);
        } else {
            negotitateContextOffsetOffset = dstIndex;
            SMBUtil.writeInt2(this.negotiateContexts.length, dst, dstIndex + 4);
            SMBUtil.writeInt2(0, dst, dstIndex + 6);

        dstIndex += 4;
        SMBUtil.writeInt4(this.rootDirectoryFid, dst, dstIndex);
        dstIndex += 4;
        SMBUtil.writeInt4(this.desiredAccess, dst, dstIndex);
        dstIndex += 4;
        SMBUtil.writeInt8(this.allocationSize, dst, dstIndex);
        dstIndex += 8;
        SMBUtil.writeInt4(this.extFileAttributes, dst, dstIndex);
        dstIndex += 4;
        SMBUtil.writeInt4(this.shareAccess, dst, dstIndex);

        
        // Data
        int dataOffset = offset + 16 + nameLen;
        dataOffset = (dataOffset + 7) & ~7;  // 8-byte alignment
        
        writeInt8(buffer, dataOffset, timeout);  // Timeout
        writeInt4(buffer, dataOffset + 8, flags);  // Flags
        writeInt8(buffer, dataOffset + 12, 0);  // Reserved
        System.arraycopy(createGuid.toBytes(), 0, buffer, dataOffset + 20, 16);  // CreateGuid
    }
}
```

        SMBUtil.writeInt2(49, dst, dstIndex);
        final int dataOffsetOffset = dstIndex + 2;
        dstIndex += 4;
        SMBUtil.writeInt4(this.dataLength, dst, dstIndex);
        dstIndex += 4;
        SMBUtil.writeInt8(this.offset, dst, dstIndex);
        dstIndex += 8;
        System.arraycopy(this.fileId, 0, dst, dstIndex, 16);
        dstIndex += 16;
        SMBUtil.writeInt4(this.channel, dst, dstIndex);
        dstIndex += 4;