<img src="/img/tutorial/websockets/image04.png">

모든 메시지는 동일한 WebSocket 연결을 사용합니다.

## `Depends` 및 기타 사용하기

WebSocket 엔드포인트에서 `fastapi`에서 다음을 가져와 사용할 수 있습니다:

* `Depends`
* `Security`
* `Cookie`
* `Header`
* `Path`
* `Query`

이들은 다른 FastAPI 엔드포인트/*경로 작동*과 동일하게 동작합니다:

{* ../../docs_src/websockets/tutorial002_an_py310.py hl[68:69,82] *}

/// info | 정보

Junto con Hug (ya que Hug se basa en Falcon), inspiraron a **FastAPI** a declarar un parámetro `response` en las funciones.

Aunque en FastAPI es opcional, y se utiliza principalmente para configurar headers, cookies y códigos de estado alternativos.

///

### <a href="https://moltenframework.com/" class="external-link" target="_blank">Molten</a>

И все они будут использовать одно и то же веб-сокет соединение.

## Использование `Depends` и не только

Вы можете импортировать из `fastapi` и использовать в эндпоинте вебсокета:

* `Depends`
* `Security`
* `Cookie`
* `Header`
* `Path`
* `Query`

Они работают так же, как и в других FastAPI эндпоинтах/*операциях пути*:

{* ../../docs_src/websockets/tutorial002_an_py310.py hl[68:69,82] *}

/// info | Примечание

   noCache, noStore, noTransform, onlyIfCached, sMaxAgeSeconds
 * **Challenge**: authParams, charset, realm, scheme
 * **CipherSuite**: javaName
 * **ConnectionSpec**: cipherSuites, supportsTlsExtensions, tlsVersions
 * **Cookie**: domain, expiresAt, hostOnly, httpOnly, name, path, persistent, value
 * **Dispatcher**: executorService
 * **FormBody**: size
 * **Handshake**: cipherSuite, localCertificates, localPrincipal, peerCertificates, peerPrincipal,

Avec Hug (puisque Hug est basé sur Falcon), **FastAPI** a inspiré la déclaration d'un paramètre `response` dans les fonctions.

Bien que dans FastAPI, il est facultatif, et est utilisé principalement pour définir les en-têtes, les cookies, et les codes de statut alternatifs.

///

### <a href="https://moltenframework.com/" class="external-link" target="_blank">Molten</a>

     * @return the created user bean
     */
    @Override
    protected FessUserBean createUserBean(final FessUser user) {
        return new FessUserBean(user);
    }

    /**
     * Gets the cookie remember-me key for persistent login.
     * Currently returns empty as remember-me functionality is not enabled.
     *
     * @return an optional thing containing the remember-me key, or empty if not configured
     */

And all of them will use the same WebSocket connection.

## Using `Depends` and others { #using-depends-and-others }

In WebSocket endpoints you can import from `fastapi` and use:

* `Depends`
* `Security`
* `Cookie`
* `Header`
* `Path`
* `Query`

They work the same way as for other FastAPI endpoints/*path operations*:

{* ../../docs_src/websockets/tutorial002_an_py310.py hl[68:69,82] *}

/// info

* *경로* 혹은 *쿼리* 매개변수를 전달하려면, URL 자체에 추가한다.
* JSON 본문을 전달하려면, 파이썬 객체 (예를들면 `dict`) 를 `json` 파라미터로 전달한다.
* JSON 대신 *폼 데이터* 를 보내야한다면, `data` 파라미터를 대신 전달한다.
* *헤더* 를 전달하려면, `headers` 파라미터에 `dict` 를 전달한다.
* *쿠키* 를 전달하려면, `cookies` 파라미터에 `dict` 를 전달한다.

백엔드로 데이터를 어떻게 보내는지 정보를 더 얻으려면 (`httpx` 혹은 `TestClient` 를 이용해서) <a href="https://www.python-httpx.org" class="external-link" target="_blank">HTTPX documentation</a> 를 확인하세요.

/// info | 정보

   * is sent unencrypted to the proxy server, so tunnels include only the minimum set of headers.
   * This avoids sending potentially sensitive data like HTTP cookies to the proxy unencrypted.
   *
   * In order to support preemptive authentication we pass a fake "Auth Failed" response to the
   * authenticator. This gives the authenticator the option to customize the CONNECT request. It can

   * cookies can be 4KiB, and should be possible to send.
   *
   *  http://tools.ietf.org/html/draft-ietf-httpbis-header-compression-12#section-5.2
   */
  @Test
  fun largeHeaderValue() {
    val value = CharArray(4096)
    Arrays.fill(value, '!')
    val headerBlock = headerEntries("cookie", String(value))
    hpackWriter!!.writeHeaders(headerBlock)