///

## Cabeçalhos personalizados { #custom-headers }

Tenha em mente que cabeçalhos personalizados proprietários podem ser adicionados <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers" class="external-link" target="_blank">usando o prefixo `X-`</a>.

/// tip | Порада

Щоб дізнатися більше про кожен код статусу і призначення кожного з них, перегляньте документацію <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Status" class="external-link" target="_blank"><abbr title="Mozilla Developer Network">MDN</abbr> про HTTP коди статусу</a>.

///

## Легкий спосіб запам'ятати назви

Розглянемо ще раз попередній приклад:

Es vereinfacht den Prozess des **Erstellens**, **Deployens** und **Zugreifens** auf eine API mit minimalem Aufwand.

Es bringt die gleiche **Developer-Experience** beim Erstellen von Apps mit FastAPI auch zum **Deployment** in der Cloud. 🎉

FastAPI Cloud ist der Hauptsponsor und Finanzierungsgeber für die *FastAPI and friends* Open-Source-Projekte. ✨

그러나 폼에 파일이 포함된 경우, `multipart/form-data`로 인코딩합니다. 다음 장에서 파일 처리에 대해 읽을 겁니다.


이러한 인코딩 및 폼 필드에 대해 더 읽고 싶다면, <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/POST" class="external-link" target="_blank"><code>POST</code>에 대한 <abbr title="Mozilla Developer Network">MDN</a> 웹 문서를 참조하세요.

///

/// warning | 경고

 Unified source directory structure that is analogous to the repository
 itself. This way locations of intermediary artifacts of a build would be
 in a known location. This would also help with developer setup i.e. getting
 new developers up and running. They could run a maven command and have all
 their source trees set up in the same way as their colleagues.

 here's what I do currently in the netbeans part of the mavenide project to

            return getMailingListKey(mailingList);
        }
    }

    /**
     * KeyComputer for Developer
     */
    private class DeveloperKeyComputer implements KeyComputer<Developer> {
        @Override
        public Object key(Developer developer) {
            return getDeveloperKey(developer);
        }
    }

    /**
     * KeyComputer for Contributor
     */

# WebSockets { #websockets }

You can use <a href="https://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API" class="external-link" target="_blank">WebSockets</a> with **FastAPI**.

## Install `websockets` { #install-websockets }

Make sure you create a [virtual environment](../virtual-environments.md){.internal-link target=_blank}, activate it, and install `websockets` (a Python library that makes it easy to use the "WebSocket" protocol):

<div class="termy">

/// tip | Consejo

Para saber más sobre cada código de estado y qué código es para qué, revisa la <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Status" class="external-link" target="_blank">documentación de <abbr title="Mozilla Developer Network – Red de Desarrolladores de Mozilla">MDN</abbr> sobre códigos de estado HTTP</a>.

///

* You can then further modify the `response` before returning it.

{* ../../docs_src/middleware/tutorial001_py39.py hl[8:9,11,14] *}

/// tip

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>.

Os headers do proxy são:

* <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-For" class="external-link" target="_blank">X-Forwarded-For</a>
* <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-Proto" class="external-link" target="_blank">X-Forwarded-Proto</a>