```Python hl_lines="2  10"
{!../../../docs_src/custom_response/tutorial009.py!}
```

You can also use the `response_class` parameter:

```Python hl_lines="2  8  10"
{!../../../docs_src/custom_response/tutorial009b.py!}
```

In this case, you can return the file path directly from your *path operation* function.

## Custom response class

Sie können eine `RedirectResponse` direkt zurückgeben:

```Python hl_lines="2  9"
{!../../../docs_src/custom_response/tutorial006.py!}
```

---

Oder Sie können sie im Parameter `response_class` verwenden:


```Python hl_lines="2  7  9"
{!../../../docs_src/custom_response/tutorial006b.py!}
```

Wenn Sie das tun, können Sie die URL direkt von Ihrer *Pfadoperation*-Funktion zurückgeben.

```Python hl_lines="13  15"
{!../../../docs_src/custom_request_and_route/tutorial002.py!}
```

Wenn eine Exception auftritt, befindet sich die `Request`-Instanz weiterhin im Gültigkeitsbereich, sodass wir den Requestbody lesen und bei der Fehlerbehandlung verwenden können:

```Python hl_lines="16-18"
{!../../../docs_src/custom_request_and_route/tutorial002.py!}
```

    checkEntry(entry, "custom-bar", "custom-header", 55)
    entry = writer.dynamicTable[tableLength - 2]!!
    checkEntry(entry, "custom-baz", "custom-header", 55)
  }

  @Test
  fun readerEviction() {
    val headerBlock =
      headerEntries(
        "custom-foo",
        "custom-header",
        "custom-bar",
        "custom-header",
        "custom-baz",
        "custom-header",
      )

# Custom Response Classes - File, HTML, Redirect, Streaming, etc.

There are several custom response classes you can use to create an instance and return them directly from your *path operations*.

Read more about it in the [FastAPI docs for Custom Response - HTML, Stream, File, others](https://fastapi.tiangolo.com/advanced/custom-response/).

You can import them directly from `fastapi.responses`:

```python
from fastapi.responses import (
    FileResponse,

But recent versions of Pydantic allow providing a custom class that inherits from `pydantic.utils.GetterDict`, to provide the functionality used when using the `orm_mode = True` to retrieve the values for ORM model attributes.

We are going to create a custom `PeeweeGetterDict` class and use it in all the same Pydantic *models* / schemas that use `orm_mode`:

## Custom Headers

Keep in mind that custom proprietary headers can be added <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers" class="external-link" target="_blank">using the 'X-' prefix</a>.

  override fun configureTlsExtensions(
    sslSocket: SSLSocket,
    hostname: String?,
    protocols: List<Protocol>,
  ) {
    // No TLS extensions if the socket class is custom.
    if (matchesSocket(sslSocket)) {
      try {
        // Enable session tickets.
        setUseSessionTickets.invoke(sslSocket, true)

        // Assume platform support on 24+

}

// APIGroupDiscoveryList is a resource containing a list of APIGroupDiscovery.
// This is one of the types able to be returned from the /api and /apis endpoint and contains an aggregated
// list of API resources (built-ins, Custom Resource Definitions, resources from aggregated servers)
// that a cluster supports.
message APIGroupDiscoveryList {
  // ResourceVersion will not be set, because this does not have a replayable ordering among multiple apiservers.

const val pluginPortalUrlOverride = "-Dorg.gradle.internal.plugins.portal.url.override=%gradle.plugins.portal.url%"

fun BuildSteps.customGradle(init: GradleBuildStep.() -> Unit, custom: GradleBuildStep.() -> Unit): GradleBuildStep =
    GradleBuildStep(init)
        .apply(custom)
        .also {
            step(it)
        }

/**
 * Adds a [Gradle build step](https://confluence.jetbrains.com/display/TCDL/Gradle)