windowSizeIncrement: Long,
  ) {
    withLock {
      if (closed) throw IOException("closed")
      require(windowSizeIncrement != 0L && windowSizeIncrement <= 0x7fffffffL) {
        "windowSizeIncrement == 0 || windowSizeIncrement > 0x7fffffffL: $windowSizeIncrement"
      }
      if (logger.isLoggable(FINE)) {
        logger.fine(
          frameLogWindowUpdate(
            inbound = false,

     */
    public Date readFiletime() throws IOException {
        Date date = null;

        final long last = readUnsignedInt();
        final long first = readUnsignedInt();
        if (first != 0x7fffffffL && last != 0xffffffffL) {
            final BigInteger lastBigInt = BigInteger.valueOf(last);
            final BigInteger firstBigInt = BigInteger.valueOf(first);

      assertThat(expected.message)
        .isEqualTo("windowSizeIncrement == 0 || windowSizeIncrement > 0x7fffffffL: 0")
    }
    assertFailsWith<IllegalArgumentException> {
      windowUpdate(0x80000000L)
    }.also { expected ->
      assertThat(expected.message)
        .isEqualTo("windowSizeIncrement == 0 || windowSizeIncrement > 0x7fffffffL: 2147483648")
    }
  }

  @Test fun goAwayWithoutDebugDataRoundTrip() {

    flags: Int,
    streamId: Int,
  ) {
    val increment: Long
    try {
      if (length != 4) throw IOException("TYPE_WINDOW_UPDATE length !=4: $length")
      increment = source.readInt() and 0x7fffffffL
      if (increment == 0L) throw IOException("windowSizeIncrement was 0")
    } catch (e: Exception) {
      logger.fine(frameLog(true, streamId, length, TYPE_WINDOW_UPDATE, flags))
      throw e
    }

    0L,
    1L,
    2L,
    3L,
    0x12345678L,
    0x5a4316b8L,
    0x6cf78a4bL,
    0xff1a618bL,
    0xfffffffdL,
    0xfffffffeL,
    0xffffffffL
  };

  private static final int LEAST = (int) 0L;
  private static final int GREATEST = (int) 0xffffffffL;

  public void testCheckedCast() {
    for (long value : UNSIGNED_INTS) {
      assertThat(UnsignedInts.toLong(UnsignedInts.checkedCast(value))).isEqualTo(value);

        byte[] buffer = new byte[256];
        long overflowSize = 0xFFFFFFFFL; // This will become -1 as signed int

        SMBUtil.writeInt2(0, buffer, 0);
        SMBUtil.writeUTime(0, buffer, 2);
        SMBUtil.writeInt4(overflowSize, buffer, 6);

        response.readParameterWordsWireFormat(buffer, 0);

        // 0xFFFFFFFF becomes -1 when interpreted as signed int
        assertEquals(-1L, response.getSize());

    }

    @ParameterizedTest
    @ValueSource(longs = { 0L, 1L, 0xFFFFFFFFL, 0x12345678L, 0x80000000L })
    void testWriteReadInt4RoundTrip(long input) {
        byte[] buffer = new byte[8];
        SMBUtil.writeInt4(input, buffer, 0);
        int result = SMBUtil.readInt4(buffer, 0);
        assertEquals((int) (input & 0xFFFFFFFFL), result);
    }

    @ParameterizedTest

     * @return the number of bytes written (8)
     */
    public static int enc_uint64be(final long l, final byte[] dst, final int di) {
        enc_uint32be((int) (l & 0xFFFFFFFFL), dst, di + 4);
        enc_uint32be((int) (l >> 32L & 0xFFFFFFFFL), dst, di);
        return 8;
    }

    /**
     * Encodes a 64-bit unsigned integer in little-endian byte order.
     *
     * @param l the long value to encode

                new ValidateNegotiateInfoRequest(0xFFFFFFFF, defaultClientGuid, DEFAULT_SECURITY_MODE, defaultDialects);

        byte[] buffer = new byte[request.size()];
        request.encode(buffer, 0);

        // Verify max capabilities value (comparing as unsigned long)
        assertEquals(0xFFFFFFFFL, SMBUtil.readInt4(buffer, 0) & 0xFFFFFFFFL);
    }

    @Test

          .that(UnsignedInteger.fromIntBits(value).intValue())
          .isEqualTo(value);
    }
  }

  public void testFromIntBitsLongValue() {
    for (int value : TEST_INTS) {
      long expected = value & 0xffffffffL;
      assertWithMessage(UnsignedInts.toString(value))
          .that(UnsignedInteger.fromIntBits(value).longValue())
          .isEqualTo(expected);
    }
  }

  public void testValueOfLong() {