{* ../../docs_src/advanced_middleware/tutorial001_py39.py hl[2,6] *}

## `TrustedHostMiddleware` { #trustedhostmiddleware }

Enforces that all incoming requests have a correctly set `Host` header, in order to guard against HTTP Host Header attacks.

{* ../../docs_src/advanced_middleware/tutorial002_py39.py hl[2,6:8] *}

The following arguments are supported:

Alternativamente, se você não tiver uma maneira de fornecer uma opção de linha de comando como `--root-path` ou equivalente, você pode definir o parâmetro `root_path` ao criar sua aplicação FastAPI:

{* ../../docs_src/behind_a_proxy/tutorial002_py39.py hl[3] *}

Passar o `root_path` para `FastAPI` seria o equivalente a passar a opção de linha de comando `--root-path` para Uvicorn ou Hypercorn.

### Sobre `root_path` { #about-root-path }

### `shutdown`-Event { #shutdown-event }

Um eine Funktion hinzuzufügen, die beim Shutdown der Anwendung ausgeführt werden soll, deklarieren Sie sie mit dem Event `shutdown`:

{* ../../docs_src/events/tutorial002_py39.py hl[6] *}

Hier schreibt die `shutdown`-Eventhandler-Funktion eine Textzeile `"Application shutdown"` in eine Datei `log.txt`.

/// info | Info

Zum Beispiel könnten Sie einen Abschnitt für **Items (Artikel)** und einen weiteren Abschnitt für **Users (Benutzer)** haben, und diese könnten durch Tags getrennt sein:

{* ../../docs_src/generate_clients/tutorial002_py39.py hl[21,26,34] *}

### Einen TypeScript-Client mit Tags generieren { #generate-a-typescript-client-with-tags }

Por exemplo, você poderia ter uma seção para **items** e outra seção para **users**, e elas poderiam ser separadas por tags:

{* ../../docs_src/generate_clients/tutorial002_py39.py hl[21,26,34] *}

### Gere um cliente TypeScript com Tags { #generate-a-typescript-client-with-tags }

import runpy
from unittest.mock import patch

import pytest


@pytest.mark.parametrize(
    "module_name",
    [
        "tutorial001_py39",
        "tutorial002_py39",
    ],
)
def test_run_module(module_name: str):
    with patch("builtins.print") as mock_print:
        runpy.run_module(f"docs_src.python_types.{module_name}", run_name="__main__")

Alternatively, if you don't have a way to provide a command line option like `--root-path` or equivalent, you can set the `root_path` parameter when creating your FastAPI app:

{* ../../docs_src/behind_a_proxy/tutorial002_py39.py hl[3] *}

Passing the `root_path` to `FastAPI` would be the equivalent of passing the `--root-path` command line option to Uvicorn or Hypercorn.

### About `root_path` { #about-root-path }

### Die statischen Dateien bereitstellen { #serve-the-static-files }

* Importieren Sie `StaticFiles`.
* „Mounten“ Sie eine `StaticFiles()`-Instanz in einem bestimmten Pfad.

{* ../../docs_src/custom_docs_ui/tutorial002_py39.py hl[7,11] *}

### Die statischen Dateien testen { #test-the-static-files }

    └── swagger-ui.css
```

### Serve the static files { #serve-the-static-files }

* Import `StaticFiles`.
* "Mount" a `StaticFiles()` instance in a specific path.

{* ../../docs_src/custom_docs_ui/tutorial002_py39.py hl[7,11] *}

### Test the static files { #test-the-static-files }

```

### Sirve los archivos estáticos { #serve-the-static-files }

* Importa `StaticFiles`.
* "Monta" una instance de `StaticFiles()` en un path específico.

{* ../../docs_src/custom_docs_ui/tutorial002_py39.py hl[7,11] *}

### Prueba los archivos estáticos { #test-the-static-files }