*
     * @param size the buffer size to validate
     * @param fieldName the field name for error reporting
     * @throws IllegalArgumentException if size is invalid
     */
    public static void validateSmb2BufferSize(long size, String fieldName) {
        if (size < 0) {
            throw new IllegalArgumentException(fieldName + " size cannot be negative: " + size);
        }
        if (size > MAX_SMB2_BUFFER_SIZE) {

    void testSmb2BufferSize() {
        assertDoesNotThrow(() -> InputValidator.validateSmb2BufferSize(1000000L, "test"));
        assertDoesNotThrow(() -> InputValidator.validateSmb2BufferSize(InputValidator.MAX_SMB2_BUFFER_SIZE, "test"));

        assertThrows(IllegalArgumentException.class, () -> InputValidator.validateSmb2BufferSize(-1L, "test"));
        assertThrows(IllegalArgumentException.class,