@Test
        @DisplayName("Header length should be suitable for SMB2 protocol")
        void testHeaderLengthValidity() {
            assertTrue(Smb2Constants.SMB2_HEADER_LENGTH > 0, "Header length must be positive");
            assertTrue(Smb2Constants.SMB2_HEADER_LENGTH % 8 == 0, "Header length should be multiple of 8 for alignment");
        }

        @Test
        @DisplayName("Dialect ANY should encompass SMB2 range")

    /**
     * The overhead size in bytes for an SMB2 write request packet.
     */
    public static final int OVERHEAD = Smb2Constants.SMB2_HEADER_LENGTH + 48;

    private byte[] data;
    private int dataOffset;
    private int dataLength;

    private byte[] fileId;
    private long offset;
    private int channel;
    private int remainingBytes;

    @Test
    @DisplayName("size() returns 8-byte aligned value (header + 4)")
    void size_returnsAlignedValue() {
        // Arrange
        Smb2LogoffRequest req = newRequest();
        int base = Smb2Constants.SMB2_HEADER_LENGTH + 4; // structure size
        int expected = ((base + 7) / 8) * 8; // expected 8-byte alignment

        // Act
        int actual = req.size();

        // Assert

    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.CommonServerMessageBlockRequest#size()
     */
    @Override
    public int size() {
        return size8(Smb2Constants.SMB2_HEADER_LENGTH + 4);
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.smb2.ServerMessageBlock2#writeBytesWireFormat(byte[], int)
     */
    @Override

    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.CommonServerMessageBlockRequest#size()
     */
    @Override
    public int size() {
        return size8(Smb2Constants.SMB2_HEADER_LENGTH + 4);
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.smb2.ServerMessageBlock2#writeBytesWireFormat(byte[], int)
     */
    @Override

            // read and decode first
            System.arraycopy(this.sbuf, 4, buffer, 0, Smb2Constants.SMB2_HEADER_LENGTH);
            readn(this.in, buffer, Smb2Constants.SMB2_HEADER_LENGTH, rl - Smb2Constants.SMB2_HEADER_LENGTH);

            cur.setReadSize(rl);
            int len = cur.decode(buffer, 0);

            if (len > rl) {

    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.CommonServerMessageBlockRequest#size()
     */
    @Override
    public int size() {
        return size8(Smb2Constants.SMB2_HEADER_LENGTH + 24);
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.smb2.ServerMessageBlock2#writeBytesWireFormat(byte[], int)
     */
    @Override

    @Nested
    @DisplayName("Size Tests")
    class SizeTests {

        @Test
        @DisplayName("Should return correct size")
        void testSize() {
            int expectedSize = Smb2Constants.SMB2_HEADER_LENGTH + 4;
            // size8 rounds up to 8-byte boundary
            int expectedAlignedSize = (expectedSize + 7) & ~7;

            assertEquals(expectedAlignedSize, echoRequest.size());
        }

    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.CommonServerMessageBlockRequest#size()
     */
    @Override
    public int size() {
        return size8(Smb2Constants.SMB2_HEADER_LENGTH + 8 + this.path.length() * 2);
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.smb2.ServerMessageBlock2#writeBytesWireFormat(byte[], int)
     */
    @Override

    void testSizeWithoutData() {
        setupMockConfig();
        Smb2IoctlRequest request = new Smb2IoctlRequest(mockConfig, TEST_CONTROL_CODE);

        int size = request.size();

        // Base size: SMB2_HEADER_LENGTH (64) + 56 = 120, aligned to 8
        assertEquals(120, size);
    }

    @Test
    @DisplayName("Test size calculation with input data")
    void testSizeWithInputData() {
        setupMockConfig();