assertEquals(asyncId, request.getAsyncId());
        assertTrue((request.getFlags() & SMB2_FLAGS_ASYNC_COMMAND) != 0, "Async flag should be set when asyncId is non-zero");
    }

    @Test
    @DisplayName("Test constructor with zero asyncId does not set async flag")
    void testConstructorWithZeroAsyncId() {
        // Given
        long mid = 12345L;
        long asyncId = 0L;

        // When

     *
     * @return the asyncId
     */
    public final long getAsyncId() {
        return this.asyncId;
    }

    /**
     * Sets the asynchronous identifier for this message.
     *
     * @param asyncId
     *            the asyncId to set
     */
    public final void setAsyncId(final long asyncId) {
        this.asyncId = asyncId;
    }

    /**

     *            The message ID of the request to cancel
     * @param asyncId
     *            The async ID for asynchronous operations (0 for synchronous)
     */
    public Smb2CancelRequest(final Configuration config, final long mid, final long asyncId) {
        super(config, SMB2_CANCEL);
        setMid(mid);
        setAsyncId(asyncId);
        if (asyncId != 0) {
            addFlags(SMB2_FLAGS_ASYNC_COMMAND);
        }
    }

        @Test
        @DisplayName("createCancel should return Smb2CancelRequest with same mid and asyncId")
        void testCreateCancel() {
            long mid = 123L;
            long asyncId = 456L;
            testRequest.setMid(mid);
            testRequest.setAsyncId(asyncId);

            CommonServerMessageBlockRequest cancelRequest = testRequest.createCancel();

class="external-link" target="_blank">AnyIO</a>, которая делает их совместимыми как с <a href="https://docs.python.org/3/library/asyncio-task.html" class="external-link" target="_blank">asyncio</a> - стандартной библиотекой Python, так и с <a href="https://trio.readthedocs.io/en/stable/" class="external-link" target="_blank">Trio</a>.


Тем не менее Uvicorn совместим только с asyncio и обычно используется совместно с <a href="https://github.com/MagicStack/uvloop" class="external-link" target="_blank">`uvloop`</a>,...

compatibles avec <a href="https://docs.python.org/3/library/asyncio-task.html" class="external-link" target="_blank">asyncio</a>, de la bibliothèque standard Python et
<a href="https://trio.readthedocs.io/en/stable/" class="external-link" target="_blank">Trio</a>.

Néanmoins, Uvicorn n'est actuellement compatible qu'avec asyncio, et il utilise normalement <a href="https://github.

target="_blank">AnyIO</a>, welches diese sowohl mit der Python-Standardbibliothek <a href="https://docs.python.org/3/library/asyncio-task.html" class="external-link" target="_blank">asyncio</a>, als auch mit <a href="https://trio.readthedocs.io/en/stable/" class="external-link" target="_blank">Trio</a> kompatibel macht.

Dennoch ist Uvicorn derzeit nur mit asyncio kompatibel und verwendet normalerweise <a href="https://github.com/MagicStack/uvloop" class="external-link" target="_blank">`uvloop`</a>,...

    async.setFuture(inner);
    async.cancel(false);
    assertTrue(inner.isCancelled());
    assertFalse(inner.wasInterrupted());
    assertThrows(CancellationException.class, () -> inner.get());
  }

  public void testCancel_beforeSet() throws Exception {
    SettableFuture<Object> async = SettableFuture.create();
    async.cancel(true);
    assertFalse(async.set(42));
  }

👐, Uvicorn ⏳ 🕴 🔗 ⏮️ ✳, &amp; ⚫️ 🛎 ⚙️ <a href="https://github.com/MagicStack/uvloop" class="external-link" target="_blank">`uvloop`</a>, ↕-🎭 💧-♻ `asyncio`.

✋️ 🚥 👆 💚 🔗 ⚙️ **🎻**, ⤴️ 👆 💪 ⚙️ **Hypercorn** ⚫️ 🐕‍🦺 ⚫️. 👶

The first thing to notice, is that we are defining an async function with `yield`. This is very similar to Dependencies with `yield`.

{* ../../docs_src/events/tutorial003.py hl[14:19] *}

The first part of the function, before the `yield`, will be executed **before** the application starts.

And the part after the `yield` will be executed **after** the application has finished.

### Async Context Manager { #async-context-manager }