(byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00 };

    /**
     * SMB2 protocol header template with magic number 0xFE 'SMB'
     */
    public static final byte[] SMB2_HEADER = { (byte) 0xFE, (byte) 'S', (byte) 'M', (byte) 'B', // ProtocolId
            (byte) 64, (byte) 0x00, // StructureSize (LE)
            (byte) 0x00, (byte) 0x00, // CreditCharge (reserved 2.0.2)

        assertEquals(expectedSize, leaseContext.size());
    }

    @Test
    @DisplayName("Should set and get lease key")
    void testLeaseKeyAccessors() {
        byte[] newKeyBytes = new byte[] { (byte) 0xFF, (byte) 0xFE, (byte) 0xFD, (byte) 0xFC, (byte) 0xFB, (byte) 0xFA, (byte) 0xF9,
                (byte) 0xF8, (byte) 0xF7, (byte) 0xF6, (byte) 0xF5, (byte) 0xF4, (byte) 0xF3, (byte) 0xF2, (byte) 0xF1, (byte) 0xF0 };

            assertTrue(len > 0);
            assertEquals(0, testMessage.getHeaderStart());
            assertTrue(testMessage.getLength() > 0);

            // Verify SMB2 header
            assertEquals((byte) 0xFE, buffer[0]);
            assertEquals((byte) 'S', buffer[1]);
            assertEquals((byte) 'M', buffer[2]);
            assertEquals((byte) 'B', buffer[3]);
        }

        @Test

     *            7-byte "raw" DES key
     * @return 8-byte DES key with parity
     */
    static byte[] des7to8(final byte[] key) {
        final byte key8[] = new byte[8];
        key8[0] = (byte) (key[0] & 0xFE);
        key8[1] = (byte) (key[0] << 7 | (key[1] & 0xFF) >>> 1);
        key8[2] = (byte) (key[1] << 6 | (key[2] & 0xFF) >>> 2);
        key8[3] = (byte) (key[2] << 5 | (key[3] & 0xFF) >>> 3);

        }
    }

    public void test_createResponseBodyFile_binaryContent() throws Exception {
        // Test with binary content
        byte[] binaryData = new byte[] { 0x00, 0x01, 0x02, (byte) 0xFF, (byte) 0xFE, (byte) 0xFD };

        ResponseData responseData = new ResponseData() {
            @Override
            public InputStream getResponseBody() {
                return new ByteArrayInputStream(binaryData);

        byte[] buffer = new byte[1024];
        int bufferIndex = 0;

        // Prepare SMB2 header (64 bytes)
        // Protocol ID
        System.arraycopy(new byte[] { (byte) 0xFE, 'S', 'M', 'B' }, 0, buffer, bufferIndex, 4);
        // Header length
        SMBUtil.writeInt2(64, buffer, bufferIndex + 4);
        // Credit charge
        SMBUtil.writeInt2(1, buffer, bufferIndex + 6);

        assertEquals(68, SMBUtil.SMB2_HEADER.length);

        // Verify SMB2 header signature
        assertEquals((byte) 0xFE, SMBUtil.SMB2_HEADER[0]);
        assertEquals((byte) 'S', SMBUtil.SMB2_HEADER[1]);
        assertEquals((byte) 'M', SMBUtil.SMB2_HEADER[2]);
        assertEquals((byte) 'B', SMBUtil.SMB2_HEADER[3]);

        // Random but realistic GUID
        byte[] testGuid = { (byte) 0x01, (byte) 0x23, (byte) 0x45, (byte) 0x67, (byte) 0x89, (byte) 0xAB, (byte) 0xCD, (byte) 0xEF,
                (byte) 0xFE, (byte) 0xDC, (byte) 0xBA, (byte) 0x98, (byte) 0x76, (byte) 0x54, (byte) 0x32, (byte) 0x10 };

        // Security mode with signing required

                throw new SmbException("Invalid SMB1 header size: " + structureSize);
            }
        }
        // Check SMB2/3 signature
        else if (protocolId == 0x424D53FE) { // 0xFE 'S' 'M' 'B'
            // SMB2/3
            if (structureSize != 64) {
                failedValidations.incrementAndGet();
                throw new SmbException("Invalid SMB2 header size: " + structureSize);

        String name = "TESTFLAGS       ";
        System.arraycopy(name.getBytes("US-ASCII"), 0, src, srcIndex + 1, 16);
        src[srcIndex + 16] = 0x00; // hex code
        src[srcIndex + 17] = (byte) 0xFE; // All flags except one: 11111110
        // Bit 7: group (1)
        // Bits 6-5: owner node type (11 = 3)
        // Bit 4: being deleted (1)
        // Bit 3: in conflict (1)
        // Bit 2: active (1)