val version = fromSource.readByte() and 0xff
    if (version != VERSION_5) throw ProtocolException("unexpected version: $version")

    val command = fromSource.readByte() and 0xff

    val reserved = fromSource.readByte() and 0xff
    if (reserved != 0) throw ProtocolException("unexpected reserved: $reserved")

    val addressType = fromSource.readByte() and 0xff
    val toAddress =
      when (addressType) {

    frameLength = (b1 and B1_MASK_LENGTH).toLong()
    if (frameLength == PAYLOAD_SHORT.toLong()) {
      frameLength = (source.readShort() and 0xffff).toLong() // Value is unsigned.
    } else if (frameLength == PAYLOAD_LONG.toLong()) {
      frameLength = source.readLong()
      if (frameLength < 0L) {
        throw ProtocolException(

                Arguments.of((IntGetter) FileEntry::getAttributes, 0, "no attributes"),
                Arguments.of((IntGetter) FileEntry::getAttributes, 0xFFFF, "many attributes"),

                Arguments.of((IntGetter) FileEntry::getFileIndex, -5, "negative index"),
                Arguments.of((IntGetter) FileEntry::getFileIndex, 0, "zero index"));
    }

        }

        @ParameterizedTest
        @DisplayName("Should encode consistently with various flag values")
        @ValueSource(ints = { 0, 1, 2, 4, 16, 0xFF, 0xFFFF, 0xFFFFFF, 0x7FFFFFFF, -1 })
        void testEncodingWithVariousFlags(int flags) {
            lock = new Smb2Lock(1024L, 2048L, flags);
            int encoded = lock.encode(buffer, 0);

        String str = info.toString();
        assertTrue(str.contains(specialName));
        assertTrue(str.contains(specialRemark));
    }

    @Test
    @DisplayName("Test type masking with 0xFFFF")
    void testTypeMasking() {
        // Test that only lower 16 bits are considered for type determination
        int typeWithUpperBits = 0xFFFF0001; // Should be treated as type 1 (printer)

     */
    public void enc_ndr_small(final int s) {
        buf[index] = (byte) (s & 0xFF);
        advance(1);
    }

    /**
     * Decodes a small integer (1 byte) from NDR format.
     *
     * @return the decoded small integer value
     */
    public int dec_ndr_small() {
        final int val = buf[index] & 0xFF;
        advance(1);
        return val;
    }

    /**

            // Given
            byte[] buffer = new byte[60];
            SMBUtil.writeInt2(60, buffer, 0);
            SMBUtil.writeInt2(0xFFFF, buffer, 2); // Max flags
            SMBUtil.writeInt4(0xFFFFFFFF, buffer, 4); // Max reserved (ignored)
            SMBUtil.writeInt8(Long.MAX_VALUE, buffer, 8); // Max times

            jcifs.internal.smb1.com.SmbComReadAndX req = cap.getValue();
            assertEquals(0x12345 & 0xFFFF, req.getMaxCount(), "maxCount should contain lower 16 bits");
            assertEquals(0x12345, req.getMinCount(), "minCount should remain original full value");
        }

        @Test

   */
  internal const val PAYLOAD_SHORT = 126

  /** Maximum length of a frame payload to be denoted as [PAYLOAD_SHORT]. */
  internal const val PAYLOAD_SHORT_MAX = 0xffffL

  /**
   * Value for [B1_MASK_LENGTH] which indicates the next eight bytes are the unsigned
   * length.
   */
  internal const val PAYLOAD_LONG = 127

 *
 * @author Louis Wasserman
 */
@NullUnmarked
final class MathBenchmarking {
  static final int ARRAY_SIZE = 0x10000;
  static final int ARRAY_MASK = 0x0ffff;
  static final Random RANDOM_SOURCE = new Random(314159265358979L);
  static final int MAX_EXPONENT = 100;

  /*
   * Duplicated from LongMath.
   * binomial(biggestBinomials[k], k) fits in a long, but not