byte[] nameBytes = originalFileName.getBytes(StandardCharsets.UTF_16LE);

        byte[] buffer = new byte[100];
        buffer[0] = 1; // replaceIfExists = true
        // Skip 7 reserved bytes (1-7)
        // Skip 8 bytes for RootDirectory (8-15)
        SMBUtil.writeInt4(nameBytes.length, buffer, 16);
        System.arraycopy(nameBytes, 0, buffer, 20, nameBytes.length);

      return bytes.clone();
    }

    @Override
    public int asInt() {
      checkState(
          bytes.length >= 4,
          "HashCode#asInt() requires >= 4 bytes (it only has %s bytes).",
          bytes.length);
      return (bytes[0] & 0xFF)
          | ((bytes[1] & 0xFF) << 8)
          | ((bytes[2] & 0xFF) << 16)
          | ((bytes[3] & 0xFF) << 24);
    }

    @Override

  @CanIgnoreReturnValue
  @Override
  Hasher putByte(byte b);

  @CanIgnoreReturnValue
  @Override
  Hasher putBytes(byte[] bytes);

  @CanIgnoreReturnValue
  @Override
  Hasher putBytes(byte[] bytes, int off, int len);

  @CanIgnoreReturnValue
  @Override
  Hasher putBytes(ByteBuffer bytes);

  @CanIgnoreReturnValue
  @Override
  Hasher putShort(short s);

  @CanIgnoreReturnValue
  @Override

     *
     * @return nonce appropriate for the dialect (16 bytes for GCM, 12 bytes for CCM)
     */
    public byte[] generateNonce() {
        final byte[] nonce = new byte[isGCMCipher() ? 16 : 12];

        if (isGCMCipher()) {
            // SMB 3.1.1 GCM: 96-bit random/fixed + 32-bit counter for guaranteed uniqueness
            // Fill first 12 bytes with random data
            secureRandom.nextBytes(nonce);

     *
     * @param bytes number of bytes written
     * @param durationNanos operation duration in nanoseconds
     */
    public void recordRdmaWrite(int bytes, long durationNanos) {
        rdmaWrites.incrementAndGet();
        bytesTransferred.addAndGet(bytes);
        totalWriteTime.addAndGet(durationNanos);
    }

    /**
     * Record an RDMA send operation
     *
     * @param bytes number of bytes sent

     * unsigned time correctly.  The last write time is zero which should be
     * encoded as four 0xFF bytes by {@code writeUTime}.
     */
    @ParameterizedTest(name = "fid={0}, lastWriteTime={1}")
    @MethodSource("validParams")
    @DisplayName("happy: writeParameterWordsWireFormat writes correct bytes")
    void testWriteParameterWordsWireFormat(int fid, long lastWriteTime, byte[] expected) {

        // Act
        int written = req.writeBytesWireFormat(buf, offset);

        // Assert: should write exactly 4 bytes
        assertEquals(4, written, "Should report 4 bytes written");
        // StructureSize (2 bytes, LE) == 4
        assertEquals(4, SMBUtil.readInt2(buf, offset));
        // Reserved (2 bytes, LE) == 0
        assertEquals(0, SMBUtil.readInt2(buf, offset + 2));
    }

    @Test

        };
    }

    /**
     * Encodes a String as UTF-8 bytes.
     *
     * @param str the String to encode
     * @param dst the destination byte array
     * @param di the starting index in the destination array
     * @param dlim the maximum index in the destination array
     * @return the number of bytes written
     */

        // Verify context header structure according to MS-SMB2
        // Next field (4 bytes) - should be 0 for last/single context
        assertEquals(0, SMBUtil.readInt4(buffer, 0));

        // NameOffset field (2 bytes) - should be 16 (after header)
        assertEquals(16, SMBUtil.readInt2(buffer, 4));

        // NameLength field (2 bytes) - should be 4 for "RqLs"
        assertEquals(4, SMBUtil.readInt2(buffer, 6));

   * well-formed.
   *
   * <p>This method returns {@code true} if and only if {@code Arrays.equals(bytes, new
   * String(bytes, UTF_8).getBytes(UTF_8))} does, but is more efficient in both time and space.
   */
  public static boolean isWellFormed(byte[] bytes) {
    return isWellFormed(bytes, 0, bytes.length);
  }

  /**