webSocket: WebSocket,
    code: Int,
    reason: String,
  ) {
    Platform.get().log("[WS $name] onClosed $code", Platform.INFO, null)
    val delegate = delegate
    if (delegate != null) {
      this.delegate = null
      delegate.onClosed(webSocket, code, reason)
    } else {
      events.add(Closed(code, reason))
    }
  }

  override fun onFailure(
    webSocket: WebSocket,
    t: Throwable,

{* ../../docs_src/websockets/tutorial001.py hl[2,6:38,41:43] *}

## Create a `websocket` { #create-a-websocket }

In your **FastAPI** application, create a `websocket`:

{* ../../docs_src/websockets/tutorial001.py hl[1,46:47] *}

/// note | Technical Details

You could also use `from starlette.websockets import WebSocket`.

{* ../../docs_src/websockets/tutorial001.py hl[2,6:38,41:43] *}

## ✍ `websocket`

👆 **FastAPI** 🈸, ✍ `websocket`:

{* ../../docs_src/websockets/tutorial001.py hl[1,46:47] *}

/// note | 📡 ℹ

👆 💪 ⚙️ `from starlette.websockets import WebSocket`.

**FastAPI** 🚚 🎏 `WebSocket` 🔗 🏪 👆, 👩‍💻. ✋️ ⚫️ 👟 🔗 ⚪️➡️ 💃.

///

## ⌛ 📧 & 📨 📧

{* ../../docs_src/websockets/tutorial001.py hl[2,6:38,41:43] *}

## Crear un `websocket`

En tu aplicación de **FastAPI**, crea un `websocket`:

{* ../../docs_src/websockets/tutorial001.py hl[1,46:47] *}

/// note | Detalles Técnicos

También podrías usar `from starlette.websockets import WebSocket`.

{* ../../docs_src/websockets/tutorial001.py hl[2,6:38,41:43] *}

## Einen `websocket` erstellen

Erstellen Sie in Ihrer **FastAPI**-Anwendung einen `websocket`:

{* ../../docs_src/websockets/tutorial001.py hl[1,46:47] *}

/// note | Technische Details

Sie können auch `from starlette.websockets import WebSocket` verwenden.

func initGlobalGrid(ctx context.Context, eps EndpointServerPools) error {
	hosts, local := eps.GridHosts()
	lookupHost := globalDNSCache.LookupHost
	g, err := grid.NewManager(ctx, grid.ManagerOptions{
		// Pass Dialer for websocket grid, make sure we do not
		// provide any DriveOPTimeout() function, as that is not
		// useful over persistent connections.
		Dialer: grid.ConnectWS(

 * Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits=15
 * Sec-WebSocket-Extensions: permessage-deflate; client_no_context_takeover
 * Sec-WebSocket-Extensions: permessage-deflate; server_max_window_bits="15"
 * Sec-WebSocket-Extensions: permessage-deflate; server_max_window_bits=15
 * Sec-WebSocket-Extensions: permessage-deflate; server_no_context_takeover
 * Sec-WebSocket-Extensions: permessage-deflate; server_no_context_takeover;

# WebSockets

When defining WebSockets, you normally declare a parameter of type `WebSocket` and with it you can read data from the client and send data to it.

It is provided directly by Starlette, but you can import it from `fastapi`:

```python
from fastapi import WebSocket
```

/// tip

# WebSocket 테스트하기

`TestClient`를 사용하여 WebSocket을 테스트할 수 있습니다.

이를 위해 `with` 문에서 `TestClient`를 사용하여 WebSocket에 연결합니다:

{* ../../docs_src/app_testing/tutorial002.py hl[27:31] *}

/// note | 참고

자세한 내용은 Starlette의 <a href="https://www.starlette.io/testclient/#testing-websocket-sessions" class="external-link" target="_blank"> WebSocket 테스트</a>에 관한 설명서를 참고하시길 바랍니다.

      object : WebSocketListener() {
        override fun onOpen(
          webSocket: WebSocket,
          response: Response,
        ) = TODO()

        override fun onMessage(
          webSocket: WebSocket,
          text: String,
        ) = TODO()

        override fun onMessage(
          webSocket: WebSocket,
          bytes: ByteString,
        ) = TODO()