# Strict Content-Type Checking { #strict-content-type-checking }

By default, **FastAPI** uses strict `Content-Type` header checking for JSON request bodies, this means that JSON requests **must** include a valid `Content-Type` header (e.g. `application/json`) in order for the body to be parsed as JSON.

## CSRF Risk { #csrf-risk }

This default behavior provides protection against a class of **Cross-Site Request Forgery (CSRF)** attacks in a very specific scenario.

    @Mock
    private SMBSigningDigest digest;

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
    }

    @Test
    @DisplayName("Test decode method with valid buffer")
    void testDecodeWithValidBuffer() throws SMBProtocolDecodingException {
        // Given
        byte[] buffer = new byte[256];
        int bufferIndex = 0;
        int expectedLength = 100;

        bb.put((byte) 0x00); // Reserved
        bb.put((byte) 0x00); // Reserved
        bb.putInt(securityInformation);
        return bb.array();
    }

    /**
     * Provide a range of values that are valid for the constructor.
     */
    static Stream<org.junit.jupiter.params.provider.Arguments> validInputs() {
        return Stream.of(org.junit.jupiter.params.provider.Arguments.of(0x0001, 0x00000000),

			return fmt.Errorf("target %v already exists", target.ID())
		}
		list.targets[target.ID()] = target
	}

	return nil
}

// Lookup - checks whether target by target ID exists is valid or not.
func (list *TargetList) Lookup(arnStr string) (Target, error) {
	list.RLock()
	defer list.RUnlock()

	arn, err := ParseARN(arnStr)
	if err != nil {
		return nil, err
	}

)

func oldLinux() bool {
	currentKernel, err := kernel.CurrentVersion()
	if err != nil {
		// Could not probe the kernel version
		return false
	}

	if currentKernel == 0 {
		// We could not get any valid value return false
		return false
	}

	// legacy linux indicator for printing warnings
	// about older Linux kernels and Go runtime.
	return currentKernel < kernel.Version(4, 0, 0)
}

 *
 * @author mbechler
 */
public interface SmbNegotiationResponse extends CommonServerMessageBlock, Response {

    /**
     * Check if the negotiation response is valid
     *
     * @param cifsContext the CIFS context
     * @param request the negotiation request
     * @return whether the protocol negotiation was successful
     */

            if (taskSegments.isEmpty()) {
                throw new NoGoalSpecifiedException("No goals have been specified for this build."
                        + " You must specify a valid lifecycle phase or a goal in the format <plugin-prefix>:<goal> or"
                        + " <plugin-group-id>:<plugin-artifact-id>[:<plugin-version>]:<goal>."

            // Act & Assert - constructor should not throw
            assertDoesNotThrow(() -> new MsrpcSamrConnect2(systemName, accessMask, ph));
        }

        @Test
        @DisplayName("should create instance with valid parameters")
        void testConstructorCreatesInstance() {
            // Arrange
            String systemName = "\\\\server";
            int accessMask = 0x000F0000;

     * so we only verify its acceptance here.
     */
    @Test
    void testConstructor() {
        // The constructor should not throw any exceptions with valid inputs.
        new DosFileFilter("*.*", SmbFile.ATTR_ARCHIVE);
        new DosFileFilter("?", SmbFile.ATTR_DIRECTORY);
        new DosFileFilter("file.txt", SmbFile.ATTR_READONLY | SmbFile.ATTR_HIDDEN);
    }

    /**

        assertNull(exception.getMessage());
        assertNull(exception.getCause());
    }

    @Test
    public void test_constructorWithNullMessageAndValidCause() {
        // Test constructor with null message and valid cause
        Throwable cause = new IllegalArgumentException("Invalid argument");
        GsaConfigException exception = new GsaConfigException(null, cause);

        assertNotNull(exception);