<img src="/img/tutorial/websockets/image05.png">

## Обработка отключений и работа с несколькими клиентами

Если веб-сокет соединение закрыто, то `await websocket.receive_text()` вызовет исключение `WebSocketDisconnect`, которое можно поймать и обработать как в этом примере:

{* ../../docs_src/websockets/tutorial003_py39.py hl[79:81] *}

Чтобы воспроизвести пример:

    return {"item_id": item_id, "q": q}
```

<details markdown="1">
<summary>Albo użyj <code>async def</code>...</summary>

Jeżeli twój kod korzysta z `async` / `await`, użyj `async def`:

```Python hl_lines="9  14"
from typing import Union

from fastapi import FastAPI

app = FastAPI()


@app.get("/")
async def read_root():

        var first = true

        override fun createSocket(): Socket {
          if (first) {
            first = false
            firstConnectLatch.await()
          }
          return super.createSocket()
        }
      }

    client =
      client
        .newBuilder()
        .protocols(listOf(Protocol.H2_PRIOR_KNOWLEDGE))

def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}
```

<details markdown="1">
<summary>Or use <code>async def</code>...</summary>

If your code uses `async` / `await`, use `async def`:

```Python hl_lines="9  14"
from typing import Union

from fastapi import FastAPI

app = FastAPI()


@app.get("/")
async def read_root():
    return {"Hello": "World"}

    return {"item_id": item_id, "q": q}
```

<details markdown="1">
<summary>Atau gunakan <code>async def</code>...</summary>

Jika kode anda menggunakan `async` / `await`, gunakan `async def`:

```Python hl_lines="9  14"
from typing import Union

from fastapi import FastAPI

app = FastAPI()


@app.get("/")
async def read_root():

def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}
```

<details markdown="1">
<summary>Və ya <code>async def</code>...</summary>

Əgər kodunuzda `async` və ya `await` vardırsa `async def` istifadə edə bilərik:

```Python hl_lines="9  14"
from typing import Union

from fastapi import FastAPI

app = FastAPI()


@app.get("/")
async def read_root():

Não faz diferença. O **FastAPI** sabe o que fazer.

/// note | Nota

Caso você não conheça, veja em [Async: *"Com Pressa?"*](../../async.md#com-pressa){.internal-link target=_blank} a sessão acerca de `async` e `await` na documentação.

///

## Integrando com OpenAPI

Todas as declarações de requisições, validações e requisitos para suas dependências (e sub-dependências) serão integradas em um mesmo esquema OpenAPI.

async def read_item(item_id: int, q: Optional[str] = None):
    return {"item_id": item_id, "q": q}
```

**توجه**:

اگر با `async / await` آشنا نیستید، به بخش _"عجله‌ دارید?"_ در صفحه درباره <a href="https://fastapi.tiangolo.com/async/#in-a-hurry" target="_blank">`async` و `await` در مستندات</a> مراجعه کنید.


</details>

### اجرا کنید

با استفاده از دستور زیر سرور را اجرا کنید:

<div class="termy">

          ) {
            processResponse(response, hostname, responses, failures)
            latch.countDown()
          }
        },
      )
    }

    try {
      latch.await()
    } catch (e: InterruptedException) {
      failures.add(e)
    }
  }

  private fun processResponse(
    response: Response,
    hostname: String,
    results: MutableList<InetAddress>,

def read_item(item_id: int, q: str = Optional[None]):
    return {"item_id": item_id, "q": q}
```

<details markdown="1">
<summary>Oppure usa <code>async def</code>...</summary>

Se il tuo codice usa `async` / `await`, allora usa `async def`:

```Python hl_lines="7  12"
from fastapi import FastAPI
from typing import Optional

app = FastAPI()


@app.get("/")
async def read_root():