byte[] largeBuffer = new byte[65536]; // 64KB buffer

        // Act & Assert
        assertEquals(0, response.writeSetupWireFormat(largeBuffer, 0));
        assertEquals(0, response.writeParametersWireFormat(largeBuffer, 32768));
        assertEquals(0, response.writeDataWireFormat(largeBuffer, 65535));
        assertEquals(0, response.readSetupWireFormat(largeBuffer, 0, 65536));

    checkFromStringCase("[2001::2]:૮૫", 77, null, -1, false);
  }

  public void testFromStringBadPort() {
    // Out-of-range ports.
    checkFromStringCase("google.com:65536", 1, null, 99, false);
    checkFromStringCase("google.com:9999999999", 1, null, 99, false);
    // Invalid port parts.
    checkFromStringCase("google.com:port", 1, null, 99, false);

	MOVBU	R4, 65536(R5)			// 1e020014de971000c4030029
	MOVBU	R4, 4096(R5)			// 3e000014de971000c4030029
	SC	R4, 65536(R5)			// 1e040010de971000c4030021
	SCV	R4, 65536(R5)			// 1e040010de971000c4030023
	LL	65536(R5), R4			// 1e040010de971000c4030020
	LLV	65536(R5), R4			// 1e040010de971000c4030022
	MOVW	y+65540(FP), R4			// 1e020014de8f1000c4338028
	MOVWU	y+65540(FP), R4			// 1e020014de8f1000c433802a

    }

    @Test
    void testWriteSingleByte() throws IOException, CIFSException {
        // Given
        when(mockTreeHandle.isSMB2()).thenReturn(true);
        when(mockTreeHandle.getSendBufferSize()).thenReturn(65536);
        when(mockFileHandle.isValid()).thenReturn(false, true); // First false to trigger ensureOpen, then true
        when(mockFileHandle.getFileId()).thenReturn(new byte[16]);

    public static final int MAX_DOMAIN_LENGTH = 255;
    public static final int MAX_SHARE_NAME_LENGTH = 80;
    public static final int MAX_BUFFER_SIZE = 65536; // 64KB default max buffer
    public static final int MAX_SMB2_BUFFER_SIZE = 8388608; // 8MB for SMB2/3
    public static final int MAX_CREDITS = 65535;

    // Patterns for validation
    private static final Pattern VALID_USERNAME = Pattern.compile("^[a-zA-Z0-9._\\-@]+$");

    @Test
    @DisplayName("Test edge case with maximum buffer index")
    void testReadBytesWireFormatMaxBufferIndex() throws SMBProtocolDecodingException {
        byte[] buffer = new byte[65536]; // Large buffer
        int bufferIndex = 65534; // Near the end

        // Set structure size to 2
        SMBUtil.writeInt2(2, buffer, bufferIndex);

        int result = response.readBytesWireFormat(buffer, bufferIndex);

        byte[] largeBuffer = new byte[65536]; // 64KB buffer

        // Act & Assert
        assertEquals(0, response.writeSetupWireFormat(largeBuffer, 0));
        assertEquals(0, response.writeParametersWireFormat(largeBuffer, 32768));
        assertEquals(0, response.writeDataWireFormat(largeBuffer, 65535));
        assertEquals(0, response.readSetupWireFormat(largeBuffer, 0, 65536));

    assertThat(UnsignedLongs.remainder(0xfffffffffffffffdL, 0xfffffffffffffffeL))
        .isEqualTo(0xfffffffffffffffdL);
    assertThat(UnsignedLongs.remainder(0xfffffffffffffffeL, 65535)).isEqualTo(65534L);
    assertThat(UnsignedLongs.remainder(0xfffffffffffffffeL, 2)).isEqualTo(0);
    assertThat(UnsignedLongs.remainder(0xfffffffffffffffeL, 5)).isEqualTo(4);
  }

        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;

        }

        @Test
        @DisplayName("Should handle large arrays efficiently")
        void testWriteBytesWireFormatWithLargeArray() {
            // Given
            byte[] dst = new byte[65536]; // 64KB array

            // When
            int result = response.writeBytesWireFormat(dst, 32768);

            // Then
            assertEquals(0, result);
        }
    }

    @Nested