"512, FILE_NOTIFY_CHANGE_STREAM_NAME", "1024, FILE_NOTIFY_CHANGE_STREAM_SIZE", "2048, FILE_NOTIFY_CHANGE_STREAM_WRITE" })
    void testCompletionFilterConstants(int value, String description) {
        // Given & When
        request.setCompletionFilter(value);
        byte[] buffer = new byte[512];
        request.writeBytesWireFormat(buffer, 0);

        // Then

    void testWriteBytesWireFormatDirect() throws Exception {
        // Given
        byte[] buffer = new byte[512];
        int offset = 100;

        // First encode to set headerStart
        byte[] tempBuffer = new byte[512];
        request.encode(tempBuffer, 50);

        // When
        int bytesWritten = request.writeBytesWireFormat(buffer, offset);

        // Then

            buffer.putLong(524288L); // Actual free allocation units (512K)
            buffer.putInt(8); // Sectors per allocation unit
            buffer.putInt(512); // Bytes per sector
            byte[] bufferArray = buffer.array();

            // When
            int bytesConsumed = fileFsFullSizeInfo.decode(bufferArray, 0, bufferArray.length);

            // Then

            buffer.putLong(1048576L); // Total allocation units (1M)
            buffer.putLong(524288L); // Free allocation units (512K)
            buffer.putInt(8); // Sectors per allocation unit
            buffer.putInt(512); // Bytes per sector
            byte[] bufferArray = buffer.array();

            // When
            int bytesConsumed = fileFsSizeInfo.decode(bufferArray, 0, bufferArray.length);

            // Then

    // [x509_extensions]
    // subjectAltName=DNS:localhost.localdomain,DNS:localhost,IP:127.0.0.1
    //
    // $ openssl req -x509 -nodes -days 36500 -subj '/CN=localhost' -config ./cert.cnf \
    //     -newkey rsa:512 -out cert.pem
    val certificate =
      certificate(
        """
        -----BEGIN CERTIFICATE-----
        MIIBWDCCAQKgAwIBAgIJANS1EtICX2AZMA0GCSqGSIb3DQEBBQUAMBQxEjAQBgNV

            assertEquals(16, bytesRead); // Structure size + reserved (4) + count (4) + remaining (4) + channel info (4)
            assertEquals(1024, response.getCount());
            assertEquals(512, response.getRemaining());
        }

        @Test
        @DisplayName("Should throw exception for invalid structure size")
        void testInvalidStructureSize() {
            byte[] buffer = new byte[64];

    private static final int DEFAULT_HASH_ALGORITHM = HASH_ALGO_SHA512;
    private static final int SALT_SIZE = 32; // 32 bytes as per SMB 3.1.1 spec
    private static final int HASH_SIZE_SHA512 = 64; // SHA-512 produces 64-byte hashes

    // Session-specific preauth integrity contexts
    private final ConcurrentMap<String, PreauthIntegrityContext> sessionContexts = new ConcurrentHashMap<>();

    // Security configuration

        offset += 4;

        // free (4 bytes)
        SMBUtil.writeInt4(500000, buffer, offset);
        offset += 4;

        // bytesPerSect (2 bytes + 2 padding)
        SMBUtil.writeInt2(512, buffer, offset);
        offset += 4;

        // Set dataCount using reflection
        setDataCount(response, offset);

        int bytesRead = response.readDataWireFormat(buffer, 0, offset);

	{"BETWEEN_64_KB_AND_256_KB", 64 * humanize.KiByte, 256*humanize.KiByte - 1},   // not exported, for support use only
	{"BETWEEN_256_KB_AND_512_KB", 256 * humanize.KiByte, 512*humanize.KiByte - 1}, // not exported, for support use only
	{"BETWEEN_512_KB_AND_1_MB", 512 * humanize.KiByte, humanize.MiByte - 1},       // not exported, for support use only
	{"BETWEEN_1024B_AND_1_MB", humanize.KiByte, humanize.MiByte - 1},

        void testDataOffsetCalculation() {
            byte[] data = new byte[50];
            Arrays.fill(data, (byte) 0xAB);
            request.setData(data, 0, data.length);

            byte[] buffer = new byte[512];
            Arrays.fill(buffer, (byte) 0);

            int startIndex = 100;
            request.writeBytesWireFormat(buffer, startIndex);

            // Verify data is at correct position