## Importe `Header` { #import-header }

Primeiro importe `Header`:

{* ../../docs_src/header_params/tutorial001_an_py310.py hl[3] *}

## Declare parâmetros de `Header` { #declare-header-parameters }

Então declare os paramêtros de cabeçalho usando a mesma estrutura que em `Path`, `Query` e `Cookie`.

    this.sslSocketFactory = sslSocketFactory
  }

  /**
   * Configure the server to not perform SSL authentication of the client. This leaves
   * authentication to another layer such as in an HTTP cookie or header. This is the default and
   * most common configuration.
   */
  public fun noClientAuth() {
    this.clientAuth = CLIENT_AUTH_NONE
  }

  /**

* Many extra features (thanks to Starlette) as:
    * **WebSockets**
    * extremely easy tests based on HTTPX and `pytest`
    * **CORS**
    * **Cookie Sessions**
    * ...and more.

### Deploy your app (optional)

You can optionally deploy your FastAPI app to [FastAPI Cloud](https://fastapicloud.com), go and join the waiting list if you haven't. 🚀

`Response` parametresini dependency'lerde de tanımlayıp, onların içinde cookie (ve header) set edebilirsiniz.

## Doğrudan bir `Response` döndürün { #return-a-response-directly }

Kodunuzda doğrudan bir `Response` döndürürken de cookie oluşturabilirsiniz.

Bunu yapmak için, [Doğrudan Response Döndürme](response-directly.md) bölümünde anlatıldığı gibi bir response oluşturabilirsiniz.

**FastAPI** использует этот *временный* ответ, чтобы извлечь HTTP-заголовки (а также cookie и статус-код) и поместит их в финальный HTTP-ответ, который содержит возвращённое вами значение, отфильтрованное согласно `response_model`.

Вы также можете объявлять параметр `Response` в зависимостях и устанавливать в них заголовки (и cookie).

## Вернуть `Response` напрямую { #return-a-response-directly }

* 通过 [Strawberry](https://strawberry.rocks) 等库进行 **GraphQL** 集成。
* 许多额外特性（归功于 Starlette），例如：
    * **WebSockets**
    * 基于 HTTPX 和 `pytest` 的极其简单的测试
    * **CORS**
    * **Cookie Sessions**
    * ……以及更多。

### 部署你的应用（可选） { #deploy-your-app-optional }

你可以选择把 FastAPI 应用部署到 [FastAPI Cloud](https://fastapicloud.com)，如果还没有的话去加入候补名单吧。🚀

* Seriously impressive performance.
* WebSocket support.
* In-process background tasks.
* Startup and shutdown events.
* Test client built on HTTPX.
* CORS, GZip, Static Files, Streaming responses.
* Session and Cookie support.
* 100% test coverage.
* 100% type annotated codebase.
* Few hard dependencies.

Starlette is currently the fastest Python framework tested. Only surpassed by Uvicorn, which is not a framework, but a server.

from fastapi import Cookie, Depends, FastAPI

app = FastAPI()


def query_extractor(q: str | None = None):
    return q


def query_or_cookie_extractor(
    q: str = Depends(query_extractor), last_query: str | None = Cookie(default=None)
):
    if not q:
        return last_query
    return q


@app.get("/items/")
async def read_query(query_or_default: str = Depends(query_or_cookie_extractor)):

## Импорт `Header` { #import-header }

Сперва импортируйте `Header`:

{* ../../docs_src/header_params/tutorial001_an_py310.py hl[3] *}

## Объявление параметров `Header` { #declare-header-parameters }

Затем объявите параметры заголовка, используя ту же структуру, что и с `Path`, `Query` и `Cookie`.

@app.get("/cookie")
async def cookies_model_with_extra(data: Model = Cookie()):
    return data


def test_query_pass_extra_list():
    client = TestClient(app)
    resp = client.get(
        "/query",
        params={
            "param": "123",
            "param2": ["456", "789"],  # Pass a list of values as extra parameter
        },
    )
    assert resp.status_code == 200
    assert resp.json() == {
        "param": "123",