void testInvalidStructureSizes(int structureSize) {
            byte[] buffer = new byte[64];
            SMBUtil.writeInt2(structureSize, buffer, 0);

            SMBProtocolDecodingException exception =
                    assertThrows(SMBProtocolDecodingException.class, () -> response.readBytesWireFormat(buffer, 0));

            assertEquals("Expected structureSize = 17", exception.getMessage());
        }

            SMBProtocolDecodingException exception =
                    assertThrows(SMBProtocolDecodingException.class, () -> response.readBytesWireFormat(buffer, bufferIndex));
            assertEquals("Expected structureSize = 4", exception.getMessage());
        }

        @ParameterizedTest
        @ValueSource(ints = { 0, 1, 2, 3, 5, 6, 8, 16, 100, 255, 1024, 4096, 65535 })

            // SMB1
            if (structureSize < 32 || structureSize > 65535) {
                failedValidations.incrementAndGet();
                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) {

    @ValueSource(ints = { 0, 1, 2, 3, 5, 10, 100, 65535 })
    void testReadBytesWireFormatInvalidStructureSize(int structureSize) {
        // Given
        byte[] buffer = new byte[256];
        int offset = 0;

        // Write invalid structure size
        SMBUtil.writeInt2(structureSize, buffer, offset);

        // When & Then
        SMBProtocolDecodingException exception =

    }
    
    @Override
    protected int readPayload(byte[] buffer, int offset) throws SMBProtocolDecodingException {
        int start = offset;
        
        // StructureSize (2 bytes)
        structureSize = readInt2(buffer, offset);
        offset += 2;
        
        // Reserved (2 bytes)
        offset += 2;
        
        // Flags (4 bytes)
        flags = readInt4(buffer, offset);

            SMBProtocolDecodingException exception =
                    assertThrows(SMBProtocolDecodingException.class, () -> response.readBytesWireFormat(buffer, bufferIndex));
            assertEquals("Expected structureSize = 4", exception.getMessage());
        }

        @ParameterizedTest
        @ValueSource(ints = { 0, 1, 2, 3, 5, 6, 100, 255, 65535 })

        return buf;
    }

    // Helper: build an error body (without header) with structureSize=9
    private static byte[] buildErrorBody(int errorContextCount, int bc, byte[] errorData) {
        int bodyLen = 8 + bc; // 8 bytes fixed + variable data
        byte[] buf = new byte[bodyLen];
        SMBUtil.writeInt2(9, buf, 0); // structureSize
        buf[2] = (byte) errorContextCount; // ErrorContextCount

                        "Should throw SMBProtocolDecodingException for invalid structure size");

        assertEquals("Expected structureSize = 2", exception.getMessage());
    }

    @Test
    @DisplayName("Test readBytesWireFormat with zero structure size throws exception")
    void testReadBytesWireFormatZeroStructureSize() {

    @ValueSource(ints = { 0, 1, 2, 4, 8, 15, 17, 32, 64, 65535 })
    void testReadBytesWireFormatInvalidStructureSize(int structureSize) {
        // Given
        byte[] buffer = new byte[256];
        int offset = 0;

        // Write invalid structure size
        SMBUtil.writeInt2(structureSize, buffer, offset);

        // When & Then
        SMBProtocolDecodingException exception =

            assertEquals("Expected structureSize = 4", exception.getMessage());
        }

        @ParameterizedTest
        @ValueSource(ints = { 0, 1, 2, 3, 5, 6, 100, 65535 })
        @DisplayName("Should throw exception for various invalid structure sizes")
        void testReadBytesWireFormatVariousInvalidSizes(int structureSize) {
            byte[] buffer = new byte[1024];