///

## FastAPI 버전의 업그레이드

응용 프로그램을 검사해야합니다.

(Starlette 덕분에), **FastAPI** 를 이용하여 굉장히 쉽게 할 수 있습니다. [Testing](../tutorial/testing.md){.internal-link target=_blank}문서를 확인해 보십시오:

검사를 해보고 난 후에, **FastAPI** 버전을 더 최신으로 업그레이드 할 수 있습니다. 그리고 코드들이 테스트에 정상적으로 작동하는지 확인을 해야합니다.

만약에 모든 것이 정상 작동하거나 필요한 부분을 변경하고, 모든 검사를 통과한다면, 새로운 버전의  `fastapi`를 표시할 수 있습니다.

## Starlette에 대해

`starlette`의 버전은 표시할 수 없습니다.

Nesta seção, veremos como usar outros middlewares.

## Adicionando middlewares ASGI

Como o **FastAPI** é baseado no Starlette e implementa a especificação <abbr title="Asynchronous Server Gateway Interface">ASGI</abbr>, você pode usar qualquer middleware ASGI.

O middleware não precisa ser feito para o FastAPI ou Starlette para funcionar, desde que siga a especificação ASGI.

///

/// note | Detalhes técnicos

Você também pode usar `from starlette.requests import Request`.

**FastAPI** fornece isso como uma conveniência para você, o desenvolvedor. Mas vem diretamente da Starlette.

///

### Antes e depois da `response`

///

/// note | Технические детали

Вы также можете использовать `from starlette.requests import Request`.

**FastAPI** предоставляет такой доступ для удобства разработчиков. Но, на самом деле, это `Request` из Starlette.

///

### До и после `response`

/// note | Technische Details

Sie können auch `from starlette import status` verwenden.

**FastAPI** bietet dieselben `starlette.status`-Codes auch via `fastapi.status` an, als Annehmlichkeit für Sie, den Entwickler. Sie kommen aber direkt von Starlette.

///

## Tags

/// note | Технические детали

Вы также можете использовать `from starlette import status`.

**FastAPI** предоставляет тот же `starlette.status` под псевдонимом `fastapi.status` для удобства разработчика. Но его источник - это непосредственно Starlette.

///

## Теги

/// note | Technical Details

You could also use `from starlette.responses import Response` or `from starlette.responses import JSONResponse`.

**FastAPI** provides the same `starlette.responses` as `fastapi.responses` just as a convenience for you, the developer. But most of the available responses come directly from Starlette.

That status code will be used in the response and will be added to the OpenAPI schema.

/// note | Technical Details

You could also use `from starlette import status`.

**FastAPI** provides the same `starlette.status` as `fastapi.status` just as a convenience for you, the developer. But it comes directly from Starlette.

///

## Tags { #tags }

* Used in production applications.

## Starlette features { #starlette-features }

**FastAPI** is fully compatible with (and based on) <a href="https://www.starlette.io/" class="external-link" target="_blank"><strong>Starlette</strong></a>. So, any additional Starlette code you have, will also work.

`FastAPI` is actually a sub-class of `Starlette`. So, if you already know or use Starlette, most of the functionality will work the same way.

# WebSockets

When defining WebSockets, you normally declare a parameter of type `WebSocket` and with it you can read data from the client and send data to it.

It is provided directly by Starlette, but you can import it from `fastapi`:

```python
from fastapi import WebSocket
```

/// tip