Ayrıca `response` üretildikten sonra, geri döndürmeden önce de kod çalıştırabilirsiniz.

Örneğin, request'i işleyip response üretmenin kaç saniye sürdüğünü içeren `X-Process-Time` adlı özel bir header ekleyebilirsiniz:

{* ../../docs_src/middleware/tutorial001_py310.py hl[10,12:13] *}

/// tip | İpucu

 */

package com.google.common.collect.testing.google;

import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.collect.testing.Helpers.copyToSet;
import static com.google.common.collect.testing.Helpers.mapEntry;
import static java.util.Collections.singleton;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.collect.ImmutableList;

pkg net/http, type PushOptions struct, Header Header
pkg net/http, type PushOptions struct, Method string
pkg net/http, type Request struct, GetBody func() (io.ReadCloser, error)
pkg net/http, type Server struct, IdleTimeout time.Duration
pkg net/http, type Server struct, ReadHeaderTimeout time.Duration
pkg net/http, type Transport struct, ProxyConnectHeader Header
pkg net/http, var ErrAbortHandler error

        }
      }
    };

    RequestBody requestBody = RequestBody.create(
      new File("docs/images/logo-square.png"),
      MEDIA_TYPE_PNG);

    Request request = new Request.Builder()
      .header("Authorization", "Client-ID " + IMGUR_CLIENT_ID)
      .url("https://api.imgur.com/3/image")
      .post(new ProgressRequestBody(requestBody, progressListener))
      .build();

/// note | Примітка

Це підтримується з версії FastAPI `0.115.0`. 🤓

///

/// tip | Порада

Ця ж техніка застосовується до `Query`, `Cookie` та `Header`. 😎

///

## Cookie з Pydantic-моделлю { #cookies-with-a-pydantic-model }

Оголосіть **cookie**-параметри, які вам потрібні, у **Pydantic-моделі**, а потім оголосіть параметр як `Cookie`:

# Sıkı Content-Type Kontrolü { #strict-content-type-checking }

Varsayılan olarak FastAPI, JSON request body'leri için sıkı Content-Type header kontrolü uygular. Bu, JSON request'lerin body'lerinin JSON olarak parse edilebilmesi için geçerli bir Content-Type header'ı (örn. application/json) içermesi gerektiği anlamına gelir.

## CSRF Riski { #csrf-risk }

## `TrustedHostMiddleware` { #trustedhostmiddleware }

Примушує, щоб усі вхідні запити мали коректно встановлений заголовок `Host`, щоб захиститися від атак HTTP Host Header.

{* ../../docs_src/advanced_middleware/tutorial002_py310.py hl[2,6:8] *}

Підтримуються такі аргументи:

如果你有一組彼此相關的「**Cookie**」，你可以建立一個「**Pydantic 模型**」來宣告它們。🍪

這樣你就能在**多處**重複使用該模型，並且能一次性為所有參數宣告**驗證**與**中繼資料**。😎

/// note | 注意

自 FastAPI 版本 `0.115.0` 起支援。🤓

///

/// tip

同樣的技巧也適用於 `Query`、`Cookie` 與 `Header`。😎

///

## 以 Pydantic 模型宣告 Cookie { #cookies-with-a-pydantic-model }

在 **Pydantic 模型**中宣告所需的 **Cookie** 參數，接著將參數宣告為 `Cookie`：

{* ../../docs_src/cookie_param_models/tutorial001_an_py310.py hl[9:12,16] *}

 *       they appear. Input data is never modified. {@link HashFunction} instances should always be
 *       stateless, and therefore thread-safe.
 *   <li><b>collision-averse:</b> while it can't be helped that a hash function will sometimes
 *       produce the same hash code for distinct inputs (a "collision"), every hash function strives
 *       to <i>some</i> degree to make this unlikely. (Without this condition, a function that

    if (value >= 1.0) {
      return 1.0;
    }
    if (value <= -1.0) {
      return -1.0;
    }
    return value;
  }

  // Serialization helpers

  /** The size of byte array representation in bytes. */
  private static final int BYTES = Stats.BYTES * 2 + Double.SIZE / Byte.SIZE;

  /**
   * Gets a byte array representation of this instance.
   *