labels.excludedDocUrls=URL da escludere dalla ricerca
labels.hostname=Nome host
labels.id=ID
labels.includedPaths=Percorsi da includere nella scansione
labels.includedUrls=URL da includere nella scansione
labels.includedDocPaths=Percorsi da includere nella ricerca
labels.includedDocUrls=URL da includere nella ricerca
labels.maxAccessCount=Numero massimo di accessi
labels.name=Nome
labels.numOfThread=Numero di thread

{* ../../docs_src/middleware/tutorial001_py310.py hl[8:9,11,14] *}

/// tip | Astuce

Gardez à l’esprit que des en-têtes propriétaires personnalisés peuvent être ajoutés [en utilisant le préfixe `X-`](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers).

{* ../../docs_src/middleware/tutorial001_py310.py hl[8:9,11,14] *}

/// tip | Tipp

Beachten Sie, dass benutzerdefinierte proprietäre Header hinzugefügt werden können [unter Verwendung des `X-`-Präfixes](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers).

Це подібно до [Потік JSON Lines](stream-json-lines.md), але використовує формат `text/event-stream`, який нативно підтримується браузерами через [API `EventSource`](https://developer.mozilla.org/en-US/docs/Web/API/EventSource).

/// info | Інформація

Додано у FastAPI 0.135.0.

///

## Що таке Server-Sent Events { #what-are-server-sent-events }

# WebSockets { #websockets }

您可以在 **FastAPI** 中使用 [WebSockets](https://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API)。

## 安装 `websockets` { #install-websockets }

请确保您创建一个[虚拟环境](../virtual-environments.md)、激活它，并安装 `websockets`（一个让使用“WebSocket”协议更容易的 Python 库）：

<div class="termy">

```console
$ pip install websockets

---> 100%
```

</div>

## WebSockets 客户端 { #websockets-client }

        assertNotNull(initParamMap);
        assertEquals(0, ((org.codelibs.fess.crawler.client.http.RequestHeader[]) initParamMap.get("requestHeaders")).length);
        assertEquals("Mozilla/5.0 (compatible; Fess/98.76; +http://fess.codelibs.org/bot.html)", initParamMap.get("userAgent"));
        assertEquals(0, ((WebAuthenticationConfig[]) initParamMap.get(HcHttpClient.AUTHENTICATIONS_PROPERTY)).length);

但出於安全考量，因為伺服器並不知道自己位於受信任的代理之後，所以它不會解讀那些標頭。

/// note | 技術細節

代理相關的標頭有：

* [X-Forwarded-For](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-For)
* [X-Forwarded-Proto](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-Proto)
* [X-Forwarded-Host](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-Host)

///

### 啟用代理轉發標頭 { #enable-proxy-forwarded-headers }

但出于安全考虑，由于服务器并不知道自己处在受信任的代理之后，它默认不会解析这些请求头。

/// note | 技术细节

这些代理相关的请求头包括：

* [X-Forwarded-For](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-For)
* [X-Forwarded-Proto](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-Proto)
* [X-Forwarded-Host](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-Host)

///

### 启用代理转发的请求头 { #enable-proxy-forwarded-headers }

/// note | 技術詳細

プロキシヘッダーは次のとおりです：

* [X-Forwarded-For](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-For)
* [X-Forwarded-Proto](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-Proto)
* [X-Forwarded-Host](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-Host)

///

### O abbr fornece uma frase completa e uma explicação { #the-abbr-gives-a-full-phrase-and-an-explanation }

* <abbr title="Mozilla Developer Network – Rede de Desenvolvedores da Mozilla: documentação para desenvolvedores, escrita pelo pessoal do Firefox">MDN</abbr>
* <abbr title="Input/Output – Entrada/Saída: leitura ou escrita em disco, comunicações de rede.">I/O</abbr>.

////