@app.websocket("/items/{item_id}/ws")
async def websocket_endpoint(
    websocket: WebSocket,
    item_id: str,
    q: int | None = None,
    cookie_or_token: str = Depends(get_cookie_or_token),
):
    await websocket.accept()
    while True:
        data = await websocket.receive_text()
        await websocket.send_text(
            f"Session cookie or query token value is: {cookie_or_token}"
        )
        if q is not None:

body:
  - type: markdown
    attributes:
      value: >
        Filing feature requests is one of the most popular ways to contribute to Guava.


        Be aware, though: most feature requests are not accepted, even if they're suggested by
        a full-time Guava team member. [Feedback](https://stackoverflow.com/a/4543114) from our
        users indicates that they really appreciate Guava's high power-to-weight ratio. It's

      }
    }
  }

  private fun readAndWriteFrames() {
    check(socket == null)
    val socket = serverSocket!!.accept()!!
    this.socket = socket

    // Bail out now if this instance was closed while waiting for the socket to accept.
    synchronized(this) {
      if (executor.isShutdown) {
        socket.close()
        return
      }
    }

* `allow_origin_regex` - 一个正则表达式字符串，匹配的源允许跨域请求。例如 `'https://.*\.example\.org'`。
* `allow_methods` - 一个允许跨域请求的 HTTP 方法列表。默认为 `['GET']`。你可以使用 `['*']` 来允许所有标准方法。
* `allow_headers` - 一个允许跨域请求的 HTTP 请求头列表。默认为 `[]`。你可以使用 `['*']` 允许所有的请求头。`Accept`、`Accept-Language`、`Content-Language` 以及 `Content-Type` 这几个请求头在[简单 CORS 请求](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS#simple_requests)中总是被允许。
* `allow_credentials` - 指示跨域请求支持 cookies。默认是 `False`。

import okhttp3.CallEvent.RetryDecision
import okhttp3.CallEvent.SatisfactionFailure
import okhttp3.CallEvent.SecureConnectEnd
import okhttp3.CallEvent.SecureConnectStart

/**
 * This accepts events as function calls on [EventListener], and publishes them as subtypes of
 * [CallEvent].
 */
class EventListenerAdapter : EventListener() {
  var listeners = listOf<(CallEvent) -> Unit>()

Gelen bir request doğru şekilde doğrulanmazsa `400` response gönderilir.

## `GZipMiddleware` { #gzipmiddleware }

`Accept-Encoding` header'ında `"gzip"` içeren herhangi bir request için GZip response'larını yönetir.

Middleware hem standart hem de streaming response'ları ele alır.

**FastAPI** a sa propre `HTTPException`.

Et la classe d'erreur `HTTPException` de **FastAPI** hérite de la classe d'erreur `HTTPException` de Starlette.

La seule différence est que la `HTTPException` de **FastAPI** accepte toute donnée sérialisable en JSON pour le champ `detail`, tandis que la `HTTPException` de Starlette n'accepte que des chaînes.

Ainsi, vous pouvez continuer à lever la `HTTPException` de **FastAPI** normalement dans votre code.

   *
   * <p>This does not always signify that the key is now absent from the cache, as it may have
   * already been re-added.
   */
  // Technically should accept RemovalNotification<? extends K, ? extends V>, but because
  // RemovalNotification is guaranteed covariant, let's make users' lives simpler.
  void onRemoval(RemovalNotification<K, V> notification);

* `allow_headers` - 允許跨來源請求所支援的 HTTP 請求標頭清單。預設為 `[]`。你可以使用 `['*']` 來允許所有標頭。對於[簡單 CORS 請求](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS#simple_requests)，`Accept`、`Accept-Language`、`Content-Language` 與 `Content-Type` 標頭一律被允許。
* `allow_credentials` - 指示是否支援跨來源請求的 Cookie。預設為 `False`。

                if (hits.length == 0) {
                    break;
                }
                for (final SearchHit hit : hits) {
                    hitCallback.accept(hit);
                }
                response = client.prepareSearchScroll(scrollId)
                        .setScroll(settings.getScrollTimeout())
                        .execute()