# Usar el Request Directamente { #using-the-request-directly }

Hasta ahora, has estado declarando las partes del request que necesitas con sus tipos.

Tomando datos de:

* El path como parámetros.
* Headers.
* Cookies.
* etc.

Y al hacerlo, **FastAPI** está validando esos datos, convirtiéndolos y generando documentación para tu API automáticamente.

Pero hay situaciones donde podrías necesitar acceder al objeto `Request` directamente.

{* ../../docs_src/middleware/tutorial001.py hl[8:9,11,14] *}

/// tip | Порада

Не забувайте, що власні заголовки можна додавати, використовуючи <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers" class="external-link" target="_blank">префікс 'X-'</a>.

    app,
    base_url="https://example.com",
    follow_redirects=False,
)


def test_redirect() -> None:
    response = client.get("/items")
    assert response.status_code == 307
    assert response.headers["location"] == "https://example.com/items/"


def test_no_redirect() -> None:
    response = client.get("/items/")
    assert response.status_code == 200

	var idxCb func() []byte
	if isCompressed {
		wantEncryption := crypto.Requested(r.Header) || isEncrypted
		s2c, cb := newS2CompressReader(reader, actualPartSize, wantEncryption)
		idxCb = cb
		defer s2c.Close()
		reader = etag.Wrap(s2c, reader)
		length = -1
	}

	srcInfo.Reader, err = hash.NewReader(ctx, reader, length, "", "", actualPartSize)
	if err != nil {

* `content` – Ein `str` oder `bytes`.
* `status_code` – Ein `int`-HTTP-Statuscode.
* `headers` – Ein `dict` von Strings.
* `media_type` – Ein `str`, der den Medientyp angibt. Z. B. `"text/html"`.

FastAPI (eigentlich Starlette) fügt automatisch einen Content-Length-Header ein. Außerdem wird es einen Content-Type-Header einfügen, der auf dem media_type basiert, und für Texttypen einen Zeichensatz (charset) anfügen.

* To pass a JSON body, pass a Python object (e.g. a `dict`) to the parameter `json`.
* If you need to send *Form Data* instead of JSON, use the `data` parameter instead.
* To pass *headers*, use a `dict` in the `headers` parameter.
* For *cookies*, a `dict` in the `cookies` parameter.

client = TestClient(app)


def test_redirect_response_class():
    response = client.get("/fastapi", follow_redirects=False)
    assert response.status_code == 307
    assert response.headers["location"] == "https://fastapi.tiangolo.com"


def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == {

    assertThat(cacheControl.onlyIfCached).isTrue()
    assertThat(cacheControl.noTransform).isTrue()
    assertThat(cacheControl.immutable).isTrue()

    // These members are accessible to response headers only.
    assertThat(cacheControl.sMaxAgeSeconds).isEqualTo(-1)
    assertThat(cacheControl.isPrivate).isFalse()
    assertThat(cacheControl.isPublic).isFalse()
    assertThat(cacheControl.mustRevalidate).isFalse()
  }

 * and the implementation should respond with a new request that sets the "Authorization" header.
 *
 * ```java
 * if (response.request().header("Authorization") != null) {
 *   return null; // Give up, we've already failed to authenticate.
 * }
 *
 * String credential = Credentials.basic(...)
 * return response.request().newBuilder()
 *     .header("Authorization", credential)
 *     .build();
 * ```
 *

Cache Miss will be typical if the item has not been read from the network, is uncacheable, or is past it's 
lifetime based on Response cache headers.

 - CallStart 
 - **CacheMiss**
 - ProxySelectStart
 - ... Standard Events ...
 - CallEnd
        
### Conditional Cache Hit