SMBUtil.writeInt2(shareType, buffer, bufferIndex);
        bufferIndex += 2;

        // Write remark offset (4 bytes)
        int remarkOffset = shareNameSize + typeSize + offsetSize;
        SMBUtil.writeInt4(remarkOffset, buffer, bufferIndex);
        bufferIndex += 4;

        // Write remark at the calculated offset
        byte[] remarkBytes = remark.getBytes(StandardCharsets.US_ASCII);

    private void encodeSockaddr(byte[] buffer, int offset) {
        if (ipv6) {
            // IPv6 sockaddr_in6 structure
            writeInt2(buffer, offset, 23);  // AF_INET6
            writeInt2(buffer, offset + 2, 445);  // Port
            writeInt4(buffer, offset + 4, 0);  // Flow info
            System.arraycopy(address.getAddress(), 0, buffer, offset + 8, 16);
            writeInt4(buffer, offset + 24, 0);  // Scope ID
        } else {

        byte[] buffer = new byte[512];
        int offset = 0;

        // Write setup
        offset += trans2QueryFSInfo.writeSetupWireFormat(buffer, offset);
        assertEquals(2, offset);

        // Write parameters
        offset += trans2QueryFSInfo.writeParametersWireFormat(buffer, offset);
        assertEquals(4, offset);

        // Write data
        offset += trans2QueryFSInfo.writeDataWireFormat(buffer, offset);

    private int fid, count, offset, remaining, off;
    private byte[] b;

    SmbComWrite() {
        command = SMB_COM_WRITE;
    }

    SmbComWrite(final int fid, final int offset, final int remaining, final byte[] b, final int off, final int len) {
        this.fid = fid;
        this.count = len;
        this.offset = offset;
        this.remaining = remaining;
        this.b = b;

    @DisplayName("writeAndXWireFormat without andx writes 0xFF and sentinel offset")
    void testWriteAndXWireFormatWithoutAndx() {
        DummyAndXBlock block = new DummyAndXBlock();
        byte[] buf = new byte[128];
        int n = block.writeAndXWireFormat(buf, 0);

        assertTrue(n > 0);
        // Common AndX header: command at +1, reserved at +2, offset at +3/+4

    @Test
    @DisplayName("Test decode with buffer offset")
    void testDecodeWithBufferOffset() throws SMBProtocolDecodingException {
        // Prepare test data with offset
        byte[] buffer = new byte[20]; // Extra space to test offset
        int bufferIndex = 7; // Start at offset 7
        long expectedIndexNumber = 0xFEDCBA9876543210L;

        // Encode test data at offset

        }
    }

    /**
     * Validate offset and length for file operations
     *
     * @param offset file offset
     * @param length operation length
     * @param fileSize total file size
     * @throws SmbException if parameters are invalid
     */
    public void validateFileOperation(long offset, long length, long fileSize) throws SmbException {

        assertEquals(SmbComTransaction.TRANS_CALL_NAMED_PIPE, dst[offset]);
        assertEquals((byte) 0x00, dst[offset + 1]);
        assertEquals((byte) 0x00, dst[offset + 2]);
        assertEquals((byte) 0x00, dst[offset + 3]);
    }

    @Test
    @DisplayName("Test readSetupWireFormat returns 0")
    void testReadSetupWireFormat() {
        // Given

    }
    h1 ^= mixK1(k1);
    return fmix(h1, len);
  }

  private static int getIntLittleEndian(byte[] input, int offset) {
    return Ints.fromBytes(input[offset + 3], input[offset + 2], input[offset + 1], input[offset]);
  }

  private static int mixK1(int k1) {
    k1 *= C1;
    k1 = Integer.rotateLeft(k1, 15);
    k1 *= C2;
    return k1;
  }

        message[8] = 0x03;

        // LM Response (24 bytes at offset 64)
        message[12] = 24; // Length
        message[13] = 0;
        message[14] = 24; // Max Length
        message[15] = 0;
        message[16] = 64; // Offset
        message[17] = 0;
        message[18] = 0;
        message[19] = 0;

        // NT Response (24 bytes at offset 88)
        message[20] = 24; // Length
        message[21] = 0;