func contextCanceled(ctx context.Context) bool {
	select {
	case <-ctx.Done():
		return true
	default:
		return false
	}
}

// bgContext returns a context that can be used for async operations.
// Cancellation/timeouts are removed, so parent cancellations/timeout will
// not propagate from parent.
// Context values are preserved.
// This can be used for goroutines that live beyond the parent context.

{!../../docs_src/bigger_applications/app/routers/items.py!}
```

Como el path de cada *path operation* tiene que empezar con `/`, como en:

```Python hl_lines="1"
@router.get("/{item_id}")
async def read_item(item_id: str):
    ...
```

...el prefijo no debe incluir un `/` final.

Así que, el prefijo en este caso es `/items`.

{!../../docs_src/bigger_applications/app/routers/items.py!}
```

Como o caminho de cada *operação de rota* deve começar com `/`, como em:

```Python hl_lines="1"
@router.get("/{item_id}")
async def read_item(item_id: str):
    ...
```

...o prefixo não deve incluir um `/` final.

Então, o prefixo neste caso é `/items`.

{!../../docs_src/bigger_applications/app/routers/items.py!}
```

Da der Pfad jeder *Pfadoperation* mit `/` beginnen muss, wie in:

```Python hl_lines="1"
@router.get("/{item_id}")
async def read_item(item_id: str):
    ...
```

... darf das Präfix kein abschließendes `/` enthalten.

Das Präfix lautet in diesem Fall also `/items`.

{!../../docs_src/bigger_applications/app/routers/items.py!}
```

Так как каждый *эндпоинт* начинается с символа `/`:

```Python hl_lines="1"
@router.get("/{item_id}")
async def read_item(item_id: str):
    ...
```

...то префикс не должен заканчиваться символом `/`.

В нашем случае префиксом является `/items`.

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      }

    fun build(): Http2Connection = Http2Connection(this)
  }

  /**
   * Methods in this class must not lock FrameWriter. If a method needs to write a frame, create an
   * async task to do so.
   */
  inner class ReaderRunnable internal constructor(
    internal val reader: Http2Reader,
  ) : Http2Reader.Handler,
    () -> Unit {
    override fun invoke() {

    If your application uses `HttpURLConnection.connect()`,
    `setFixedLengthStreamingMode()`, or `setChunkedStreamingMode()`, OkHttp will
    now use a async dispatcher thread to establish the HTTP connection.

    We don’t expect this change to have any behavior or performance
    consequences. Regardless, please exercise your `OkUrlFactory` and

            AbstractFuture<String> future = setFutureFuture.get();
            setFutureSetSuccess.set(currentFuture.get().setFuture(future));
            setFutureCompletionSuccess.set(future.set("hello-async-world"));
            awaitUnchecked(barrier);
          }
        };
    Set<Object> finalResults = Collections.synchronizedSet(Sets.newIdentityHashSet());
    Runnable collectResultsRunnable =

            AbstractFuture<String> future = setFutureFuture.get();
            setFutureSetSuccess.set(currentFuture.get().setFuture(future));
            setFutureCompletionSuccess.set(future.set("hello-async-world"));
            awaitUnchecked(barrier);
          }
        };
    Set<Object> finalResults = Collections.synchronizedSet(Sets.newIdentityHashSet());
    Runnable collectResultsRunnable =