assertEquals(65535, decodedSize);
        assertEquals(65535, referral.getSize());
        assertEquals(65535, referral.getServerType());
        assertEquals(65535, referral.getRFlags());
        assertEquals(65535, referral.getProximity());
        assertEquals(65535, referral.getTtl());
    }

    @Test
    public void testEmptyStrings() {

        });
    }

    @Test
    public void testValidMessageSize() throws Exception {
        validator.validateMessageSize(1024, false);
        validator.validateMessageSize(65535, true);
        validator.validateMessageSize(1048576, false); // 1MB for SMB2
    }

    @Test
    public void testMessageSizeTooSmall() throws Exception {
        assertThrows(SmbException.class, () -> {

        when(locator.getUNCPath()).thenReturn("\\\\server\\share\\dir\\");
        when(tree.getConfig()).thenReturn(config);
        when(config.getMaximumBufferSize()).thenReturn(65535);
        when(config.getListSize()).thenReturn(65535);

        // Arrange: initial page with two entries, then one more entry, then no more files
        FileEntry fe1 = mock(FileEntry.class);
        lenient().when(fe1.getName()).thenReturn("file1");

    }

    private static Stream<Arguments> provideInt4TestValues() {
        return Stream.of(Arguments.of(0), Arguments.of(1), Arguments.of(255), Arguments.of(256), Arguments.of(65535), Arguments.of(65536),
                Arguments.of(0x7FFFFFFF), Arguments.of(0xFFFFFFFF));
    }

    @Test
    @DisplayName("readInt2 should correctly read 16-bit integer")
    void testReadInt2() {

    private void setupNegotiateStubs() {
        when(mockNegotiate.getNegotiatedCapabilities()).thenReturn(0x00123456);
        when(mockNegotiate.getNegotiatedSendBufferSize()).thenReturn(65535);
        when(mockNegotiate.getNegotiatedMpxCount()).thenReturn(65535);
        when(mockNegotiate.getNegotiatedSessionKey()).thenReturn(0x12345678);
    }

    /** Simple test stub of {@link ServerData} */

        serverData.smaxMpxCount = 50;
        serverData.maxBufferSize = 65536;
        serverData.sessKey = 0xABCDEF01;
        serverData.scapabilities = 0x80000000;
        serverData.securityMode = 0x0F;
        serverData.security = 1;
        serverData.maxNumberVcs = 1;
        serverData.maxRawSize = 65536;
        serverData.serverTimeZone = -300;
        serverData.encryptionKeyLength = 8;

    private Trans2FindFirst2 trans2FindFirst2;

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
        when(mockConfig.getMaximumBufferSize()).thenReturn(65535);
        when(mockConfig.getTransactionBufferSize()).thenReturn(65535);
        when(mockConfig.isUseUnicode()).thenReturn(true);
        when(mockConfig.isForceUnicode()).thenReturn(false);
        when(mockConfig.getOemEncoding()).thenReturn("ASCII");
    }

    
    // Buffer pool configuration
    private final int initialSendBuffers = 32;
    private final int initialReceiveBuffers = 64;
    private final int sendBufferSize = 65536;      // 64KB
    private final int receiveBufferSize = 65536;   // 64KB
    
    public RdmaBufferManager(RdmaProvider provider) {
        this.provider = provider;
        this.availableSendRegions = new ConcurrentLinkedQueue<>();

    checkFromStringCase("192.0.2.2:83", -1, "192.0.2.2", 83, true);
    checkFromStringCase("[2001::2]:85", -1, "2001::2", 85, true);
    checkFromStringCase("goo.gl:65535", 65536, "goo.gl", 65535, true);
    // No port, bad default.
    checkFromStringCase("google.com", -1, "google.com", -1, false);
    checkFromStringCase("192.0.2.1", 65536, "192.0.2.1", -1, false);

    checkFromStringCase("192.0.2.2:83", -1, "192.0.2.2", 83, true);
    checkFromStringCase("[2001::2]:85", -1, "2001::2", 85, true);
    checkFromStringCase("goo.gl:65535", 65536, "goo.gl", 65535, true);
    // No port, bad default.
    checkFromStringCase("google.com", -1, "google.com", -1, false);
    checkFromStringCase("192.0.2.1", 65536, "192.0.2.1", -1, false);