}

  /**
   * Invoked immediately after receiving response headers.
   *
   * This method is always invoked after [responseHeadersStart].
   *
   * @param response the response received over the network. It is an error to access the body of
   *     this response.
   */
  open fun responseHeadersEnd(
    call: Call,
    response: Response,
  ) {
  }

  /**

    Note over client,operation: Response is already sent, can't change it anymore
    opt Tasks
        operation -->> tasks: Send background tasks
    end
    opt Raise other exception
        tasks -->> tasks: Handle exceptions in the background task code
    end
```

/// info

Une **seule réponse** sera envoyée au client. Il peut s'agir d'une des réponses d'erreur ou de la réponse provenant du *chemin d'accès*.

Bu durumda middleware gelen request’i intercept eder ve uygun CORS header’larıyla yanıt verir; bilgilendirme amaçlı olarak da `200` veya `400` response döndürür.

### Basit request'ler { #simple-requests }

`Origin` header’ı olan herhangi bir request. Bu durumda middleware request’i normal şekilde geçirir, ancak response’a uygun CORS header’larını ekler.

## Daha Fazla Bilgi { #more-info }

# Utiliser des dataclasses { #using-dataclasses }

FastAPI est construit au‑dessus de **Pydantic**, et je vous ai montré comment utiliser des modèles Pydantic pour déclarer les requêtes et les réponses.

Mais FastAPI prend aussi en charge l'utilisation de [`dataclasses`](https://docs.python.org/3/library/dataclasses.html) de la même manière :

{* ../../docs_src/dataclasses_/tutorial001_py310.py hl[1,6:11,18:19] *}

/// check | **FastAPI**'a ilham olan

Harika performans elde etmenin yollarını bulmak.

Crea una variable `ALGORITHM` con el algoritmo usado para firmar el token JWT y configúralo a `"HS256"`.

Crea una variable para la expiración del token.

Define un Modelo de Pydantic que se usará en el endpoint de token para el response.

Crea una función de utilidad para generar un nuevo token de acceso.

{* ../../docs_src/security/tutorial004_an_py310.py hl[4,7,13:15,29:31,82:90] *}

## Actualizar las dependencias { #update-the-dependencies }

        assertEquals(statusCode, response.getHttpStatusCode());
    }

    @Test
    public void testEncoding() {
        CurlResponse response = new CurlResponse();
        String encoding = "UTF-8";

        response.setEncoding(encoding);

        assertEquals(encoding, response.getEncoding());
    }

    @Test
    public void testContentException() {

        response = new Trans2QueryFSInformationResponse(config, informationLevel);

        assertNotNull(response);
        assertEquals(informationLevel, response.getInformationLevel());
        assertEquals(ServerMessageBlock.SMB_COM_TRANSACTION2, response.getCommand());
        assertEquals(SmbComTransaction.TRANS2_QUERY_FS_INFORMATION, response.getSubCommand());
    }

    @Test

        setTreeIdMethod.setAccessible(true);
        setTreeIdMethod.invoke(response, -1);
        assertFalse(response.isValidTid());

        // Test valid TID
        setTreeIdMethod.invoke(response, 100);
        assertTrue(response.isValidTid());

        // Test zero TID (valid)
        setTreeIdMethod.invoke(response, 0);
        assertTrue(response.isValidTid());
    }

    @Test

Именно поэтому на официальном сайте сказано:

> Requests — один из самых загружаемых Python-пакетов всех времён

Пользоваться им очень просто. Например, чтобы сделать запрос `GET`, вы бы написали:

```Python
response = requests.get("http://example.com/some/url")
```

Соответствующая в FastAPI API-операция пути могла бы выглядеть так:

```Python hl_lines="1"
@app.get("/some/url")
def read_url():