private static final String CRAWLER_WEB_PREFIX = "crawler.web.";

    private static final String CRAWLER_WEB_HEADER_PREFIX = CRAWLER_WEB_PREFIX + "header.";

    private static final String CRAWLER_WEB_AUTH = CRAWLER_WEB_PREFIX + "auth";

    private static final String CRAWLER_USERAGENT = "crawler.useragent";

Puedes añadir código que se ejecute con la `request`, antes de que cualquier *path operation* la reciba.

Y también después de que se genere la `response`, antes de devolverla.

Por ejemplo, podrías añadir un custom header `X-Process-Time` que contenga el tiempo en segundos que tomó procesar la request y generar una response:

{* ../../docs_src/middleware/tutorial001.py hl[10,12:13] *}

/// tip | Consejo

    
    public DurableHandleRequest() {
        super(NAME);
        this.reserved = 0;
    }
    
    @Override
    public void encode(byte[] buffer, int offset) {
        // Context header
        int nameLen = getName().length();
        writeInt4(buffer, offset, 16);  // Next
        writeInt2(buffer, offset + 4, nameLen);  // NameOffset
        writeInt2(buffer, offset + 6, nameLen);  // NameLength

			if err != nil {
				err = msgp.WrapError(err)
				return
			}
		}
	}
	return
}

// EncodeMsg implements msgp.Encodable
func (z *metacache) EncodeMsg(en *msgp.Writer) (err error) {
	// map header, size 13
	// write "end"
	err = en.Append(0x8d, 0xa3, 0x65, 0x6e, 0x64)
	if err != nil {
		return
	}
	err = en.WriteTime(z.ended)
	if err != nil {
		err = msgp.WrapError(err, "ended")
		return
	}

	public fun close ()V
	public final fun code ()I
	public final fun handshake ()Lokhttp3/Handshake;
	public final fun header (Ljava/lang/String;)Ljava/lang/String;
	public final fun header (Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;
	public static synthetic fun header$default (Lokhttp3/Response;Ljava/lang/String;Ljava/lang/String;ILjava/lang/Object;)Ljava/lang/String;
	public final fun headers ()Lokhttp3/Headers;

	// Version numbers.
	zipVersion20 = 20 // 2.0
	zipVersion45 = 45 // 4.5 (reads and writes zip64 archives)

	// Limits for non zip64 files.
	uint16max = (1 << 16) - 1
	uint32max = (1 << 32) - 1

	// Extra header IDs.
	//
	// IDs 0..31 are reserved for official use by PKWARE.
	// IDs above that range are defined by third-party vendors.
	// Since ZIP lacked high precision timestamps (nor an official specification

// parse size from content-range header
func parseSizeFromContentRange(h http.Header) (sz int64, err error) {
	cr := h.Get(xhttp.ContentRange)
	if cr == "" {
		return sz, fmt.Errorf("Content-Range not set")
	}
	parts := contentRangeRegexp.FindStringSubmatch(cr)
	if len(parts) != 4 {
		return sz, fmt.Errorf("invalid Content-Range header %s", cr)
	}
	if parts[3] == "*" {
		return -1, nil
	}

        }
      }
    };

    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 | Нотатки

Це підтримується з версії FastAPI  `0.115.0`. 🤓

///

/// tip | Порада

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

///

## Cookie з Pydantic-моделлю

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

MINIO_IDENTITY_PLUGIN_ROLE_ID       (string)    unique ID to generate the ARN
MINIO_IDENTITY_PLUGIN_COMMENT       (sentence)  optionally add a comment to this setting
```

If provided, the auth token parameter is sent as an authorization header.

`MINIO_IDENTITY_PLUGIN_ROLE_POLICY` is a required parameter and can be list of comma separated policy names.