/**
   * Returns true if this cookie's domain should be interpreted as a single host name, or false if
   * it should be interpreted as a pattern. This flag will be false if its `Set-Cookie` header
   * included a `domain` attribute.
   *
   * For example, suppose the cookie's domain is `example.com`. If this flag is true it matches

Also fügen wir sie in ihr eigenes `dependencies`-Modul (`app/dependencies.py`) ein.

Wir werden nun eine einfache Abhängigkeit verwenden, um einen benutzerdefinierten `X-Token`-Header zu lesen:

//// tab | Python 3.9+

```Python hl_lines="3  6-8" title="app/dependencies.py"
{!> ../../docs_src/bigger_applications/app_an_py39/dependencies.py!}
```

////

//// tab | Python 3.8+

    * JSON.
    * Pfad-Parametern.
    * Abfrage-Parametern.
    * Cookies.
    * Header-Feldern.
    * Formularen.
    * Dateien.
* <abbr title="auch bekannt als: Serialisierung, Parsen, Marshalling">Konvertierung</abbr> von Ausgabedaten: Konvertierung von Python-Daten und -Typen zu Netzwerkdaten (als JSON):

   *     CLEAN 1ab96a171faeeee38496d8b330771a7a 1600 234
   *     READ 335c4c6028171cfddfbaae1a9c313c52
   *     READ 3400330d1dfc7f3f7f4b8d4d803dfcf6
   *
   * The first five lines of the journal form its header. They are the constant string
   * "libcore.io.DiskLruCache", the disk cache's version, the application's version, the value
   * count, and a blank line.
   *

		return
	}

	if _, _, err := globalBucketMetadataSys.GetReplicationConfig(ctx, bucket); err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

	w.Header().Set(xhttp.ContentType, string(mimeJSON))

	enc := json.NewEncoder(w)
	stats := globalReplicationStats.Load().getLatestReplicationStats(bucket)
	bwRpt := globalNotificationSys.GetBandwidthReports(ctx, bucket)

<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

            int size1 = echoRequest.size();
            int size2 = echoRequest.size();

            assertEquals(size1, size2);
        }

        @Test
        @DisplayName("Size should be 72 bytes (64 header + 4 body aligned to 8)")
        void testExactSize() {
            // SMB2_HEADER_LENGTH = 64, body = 4, total = 68
            // size8 aligns to 8-byte boundary: (68 + 7) & ~7 = 72

It has a `GET` operation that could return an error.

It has a `POST` operation that could return several errors.

Both *path operations* require an `X-Token` header.

//// tab | Python 3.10+

```Python
{!> ../../docs_src/app_testing/app_b_an_py310/main.py!}
```

////

//// tab | Python 3.9+

```Python

lc(.25rem - 1px);border-bottom-left-radius:calc(.25rem - 1px)}.card>.card-header+.list-group,.card>.list-group+.card-footer{border-top:0}.card-body{-ms-flex:1 1 auto;flex:1 1 auto;min-height:1px;padding:1.25rem}.card-title{margin-bottom:.75rem}.card-subtitle{margin-top:-.375rem;margin-bottom:0}.card-text:last-child{margin-bottom:0}.card-link:hover{text-decoration:none}.card-link+.card-link{margin-left:1.25rem}.card-header{padding:.75rem 1.25rem;margin-bottom:0;background-color:rgba(0,0,0,.03);border-bottom:1px...

Tiene una operación `GET` que podría devolver un error.

Tiene una operación `POST` que podría devolver varios errores.

Ambas *path operations* requieren un `X-Token` header.

//// tab | Python 3.10+

```Python
{!> ../../docs_src/app_testing/app_b_an_py310/main.py!}
```

////

//// tab | Python 3.9+

```Python