# Additional Status Codes { #additional-status-codes }

By default, **FastAPI** will return the responses using a `JSONResponse`, putting the content you return from your *path operation* inside of that `JSONResponse`.

It will use the default status code or the one you set in your *path operation*.

## Additional status codes { #additional-status-codes_1 }

Naves <******@****.***> 1751606237 +0300

<img src="/img/tutorial/response-status-code/image01.png">

/// note

Some response codes (see the next section) indicate that the response does not have a body.

FastAPI knows this, and will produce OpenAPI docs that state there is no response body.

///

## About HTTP status codes { #about-http-status-codes }

/// note

If you already know what HTTP status codes are, skip to the next section.

///

        }
    }

    @Test
    @DisplayName("Should have status codes array")
    void testStatusCodesArray() {
        // When
        int[] codes = NtStatus.NT_STATUS_CODES;

        // Then
        assertNotNull(codes);
        assertTrue(codes.length > 0);
        // First code should be success
        assertEquals(NtStatus.NT_STATUS_SUCCESS, codes[0]);
    }

    @Test

    }

    /**
     * Gets the successful HTTP codes.
     *
     * @return the successful HTTP codes
     */
    public int[] getSuccessfulHttpCodes() {
        return successfulHttpCodes;
    }

    /**
     * Sets the successful HTTP codes.
     *
     * @param successfulHttpCodes the successful HTTP codes to set
     */

 */

package jcifs.smb;

/**
 * Interface defining DOS error codes and their mappings to NT status codes.
 * Provides lookup tables for converting between DOS and NT error representations.
 */
public interface DosError {

    /**
     * Mapping table from DOS error codes to NT status codes.
     * Each entry contains a pair of [DOS error code, NT status code].
     */

@ExtendWith(MockitoExtension.class)
class WinErrorTest {

    // Helper to lookup a message by code using the production arrays
    private static Optional<String> lookupMessage(int code) {
        int[] codes = WinError.WINERR_CODES;
        String[] msgs = WinError.WINERR_MESSAGES;
        for (int i = 0; i < codes.length; i++) {
            if (codes[i] == code) {
                return Optional.of(msgs[i]);
            }
        }

        faultCodes.add(DcerpcError.DCERPC_FAULT_PROTO_ERROR);

        // Verify all 9 codes are unique
        assertEquals(9, faultCodes.size(), "All fault codes should be unique");
    }

    @Test
    @DisplayName("Should verify fault code value ranges and patterns")
    void testFaultCodeValueRanges() {
        // Standard fault codes (0x00000000 - 0x0000FFFF range)

package jcifs.smb1.smb1;

/**
 * Interface defining DOS error codes and their mappings to NT status codes for SMB1 protocol.
 * Provides lookup tables for converting between DOS and NT error representations.
 */
public interface DosError {

    /**
     * Mapping table from DOS error codes to NT status codes.
     * Each entry contains a pair of [DOS error code, NT status code].
     */
    int[][] DOS_ERROR_CODES =

  }

  /**
   * Assigns to {@code hashCode} a "bucket" in the range {@code [0, buckets)}, in a uniform manner
   * that minimizes the need for remapping as {@code buckets} grows. That is, {@code
   * consistentHash(h, n)} equals:
   *
   * <ul>
   *   <li>{@code n - 1}, with approximate probability {@code 1/n}
   *   <li>{@code consistentHash(h, n - 1)}, otherwise (probability {@code 1 - 1/n})
   * </ul>
   *