Das ist keine Limitation von **FastAPI**, sondern Teil des HTTP-Protokolls.

///

## Zusammenfassung

This is not a limitation of **FastAPI**, it's part of the HTTP protocol.

///

## Recap

```

////

**FastAPI** will **extract** the data for **each field** from the **form data** in the request and give you the Pydantic model you defined.

## Check the Docs

You can verify it in the docs UI at `/docs`:

<div class="screenshot">
<img src="/img/tutorial/request-form-models/image01.png">
</div>

## Forbid Extra Form Fields

    client.newCall(request).execute().use {
      assertEquals(204, it.code)
    }

    request =
      Request.Builder()
        .url(endpointUrl)
        .header("Content-Type", "application/xml")
        .put(ErringRequestBody())
        .build()
    assertFailsWith<IOException> {
      client.newCall(request).execute()
    }

    request =
      Request.Builder()
        .url(endpointUrl)
        .head()

   * - 2 requests happen concurrently to a host that can be coalesced onto a single connection.
   * - Both request discover no existing connection. They both make a connection.
   * - The first request "wins the race".
   * - The second request discovers it "lost the race" and closes the connection it just opened.
   * - The second request uses the coalesced connection from request1.

  /**
   * The interval between two unit requests, at our stable rate. E.g., a stable rate of 5 permits
   * per second has a stable interval of 200ms.
   */
  double stableIntervalMicros;

  /**
   * The time when the next request (no matter its size) will be granted. After granting a request,
   * this is pushed further in the future. Large requests push this further than small requests.
   */

## Confira os Documentos

Você pode verificar na UI de documentação em `/docs`:

<div class="screenshot">
<img src="/img/tutorial/request-form-models/image01.png">
</div>

## Proibir Campos Extras de Formulários

   * observe the new rate; only subsequent requests will.
   *
   * <p>Note though that, since each request repays (by waiting, if necessary) the cost of the
   * <i>previous</i> request, this means that the very next request after an invocation to {@code
   * setRate} will not be affected by the new rate; it will pay the cost of the previous request,
   * which is in terms of the previous rate.
   *

Sebastián Ramírez <******@****.***> 1728247014 +0200

        .cookieJar(JavaNetCookieJar(cookieManager))
        .build()
    get(urlWithIpAddress(server, "/"))
    val request1 = server.takeRequest()
    assertThat(request1.headers["Cookie"]).isNull()
    get(urlWithIpAddress(server, "/"))
    val request2 = server.takeRequest()
    assertThat(request2.headers["Cookie"]).isEqualTo("a=android; b=banana")
  }

  @Test
  fun testRedirectsDoNotIncludeTooManyCookies() {