But because of our changes in `GzipRequest.body`, the request body will be automatically decompressed when it is loaded by **FastAPI** when needed.

## Accessing the request body in an exception handler

!!! tip
    To solve this same problem, it's probably a lot easier to use the `body` in a custom handler for `RequestValidationError` ([Handling Errors](../tutorial/handling-errors.md#use-the-requestvalidationerror-body){.internal-link target=_blank}).

      """.trimMargin(),
    )
  }

  override fun timeout() = Timeout.NONE

  override fun close() {
  }
}

fun Response.stripBody(): Response {
  return newBuilder()
    .body(UnreadableResponseBody(body.contentType(), body.contentLength()))
    .build()
}

val Response.commonIsSuccessful: Boolean
  get() = code in 200..299

fun Response.commonHeaders(name: String): List<String> = headers.values(name)

```
https://www.external.org/events/invoices/2expen51ve
```

mit einem JSON-Body, der etwa Folgendes enthält:

```JSON
{
    "description": "Payment celebration",
    "paid": true
}
```

und sie würde eine Response von dieser *externen API* mit einem JSON-Body wie dem folgenden erwarten:

```JSON
{
    "ok": true
}
```

!!! tip "Tipp"

### Use o body do `RequestValidationError`.

O `RequestValidationError` contém o `body` que ele recebeu de dados inválidos.

Você pode utilizá-lo enquanto desenvolve seu app para conectar o *body* e debugá-lo, e assim retorná-lo ao usuário, etc.

Tente enviar um item inválido como este:

```JSON
{

Com `Form` você pode declarar os mesmos metadados e validação que com `Body` (e `Query`, `Path`, `Cookie`).

!!! info "Informação"
    `Form` é uma classe que herda diretamente de `Body`.

!!! tip "Dica"

    val body = response.body ?: return
    sleepNanos(response.bodyDelayNanos)
    val responseBodySink =
      sink.withThrottlingAndSocketPolicy(
        policy = response,
        disconnectHalfway = response.socketPolicy == DisconnectDuringResponseBody,
        expectedByteCount = body.contentLength,
        socket = socket,
      ).buffer()
    body.writeTo(responseBodySink)

With `Form` you can declare the same configurations as with `Body` (and `Query`, `Path`, `Cookie`), including validation, examples, an alias (e.g. `user-name` instead of `username`), etc.

!!! info
    `Form` is a class that inherits directly from `Body`.

!!! tip
    To declare form bodies, you need to use `Form` explicitly, because without it the parameters would be interpreted as query parameters or body (JSON) parameters.

## About "Form Fields"

    val header: String? = recordedRequest.getHeader("")
    var chunkSizes: List<Int> = recordedRequest.chunkSizes
    var bodySize: Long = recordedRequest.bodySize
    var body: Buffer = recordedRequest.body
    var utf8Body: String = recordedRequest.body.readUtf8()
    var sequenceNumber: Int = recordedRequest.sequenceNumber
    var tlsVersion: TlsVersion? = recordedRequest.tlsVersion

Mit `Form` haben Sie die gleichen Konfigurationsmöglichkeiten wie mit `Body` (und `Query`, `Path`, `Cookie`), inklusive Validierung, Beispielen, einem Alias (z. B. `user-name` statt `username`), usw.

!!! info
    `Form` ist eine Klasse, die direkt von `Body` erbt.

!!! tip "Tipp"
    Um Formularbodys zu deklarieren, verwenden Sie explizit `Form`, da diese Parameter sonst als Query-Parameter oder Body(-JSON)-Parameter interpretiert werden würden.

## `example` & `examples` 🗄

🕐❔ ⚙️ 🙆:

* `Path()`
* `Query()`
* `Header()`
* `Cookie()`
* `Body()`
* `Form()`
* `File()`

👆 💪 📣 💽 `example` ⚖️ 👪 `examples` ⏮️ 🌖 ℹ 👈 🔜 🚮 **🗄**.

### `Body` ⏮️ `example`

📥 👥 🚶‍♀️ `example` 📊 ⌛ `Body()`:

=== "🐍 3️⃣.6️⃣ & 🔛"

    ```Python hl_lines="20-25"
    {!> ../../../docs_src/schema_extra_example/tutorial003.py!}