t.Run("testStreamRoundtrip", func(t *testing.T) {
		defer timeout(5 * time.Second)()
		testStreamRoundtrip(t, local, remote)
		assertNoActive(t, connRemoteLocal)
		assertNoActive(t, connLocalToRemote)
	})
	t.Run("testStreamCancel", func(t *testing.T) {
		defer timeout(5 * time.Second)()
		testStreamCancel(t, local, remote)
		assertNoActive(t, connRemoteLocal)

## Détails techniques { #technical-details }

FastAPI met en œuvre certaines bonnes pratiques SSE prêtes à l’emploi.

- Envoyer un commentaire **« keep alive » `ping`** toutes les 15 secondes quand aucun message n’a été émis, pour éviter que certains proxys ne ferment la connexion, comme suggéré dans la [Spécification HTML : Server-Sent Events](https://html.spec.whatwg.org/multipage/server-sent-events.html#authoring-notes).

```Python
old_dict = {
    "old key": "old value",
    "second old key": "second old value",
}
new_dict = {**old_dict, "new key": "new value"}
```

ここでは、`new_dict` には `old_dict` のすべてのキーと値に加え、新しいキーと値が含まれます:

```Python
{
    "old key": "old value",
    "second old key": "second old value",
    "new key": "new value",
}
```

   * @param first the first element
   * @param second the second element
   * @param rest an array of additional elements, possibly empty
   * @return an unmodifiable list containing the specified elements
   */
  public static <E extends @Nullable Object> List<E> asList(
      @ParametricNullness E first, @ParametricNullness E second, E[] rest) {
    return new TwoPlusArrayList<>(first, second, rest);
  }

  /**

    assertThrows(TimeoutException.class, () -> manager.awaitHealthy(1, MILLISECONDS));
    manager.awaitHealthy(5, SECONDS); // no exception thrown

    manager.stopAsync();
    assertThrows(TimeoutException.class, () -> manager.awaitStopped(1, MILLISECONDS));
    manager.awaitStopped(5, SECONDS); // no exception thrown
  }

  /**

    @Test
    void testFormatRate() {
        FileSizeFormat format = new FileSizeFormat();

        // Test bytes per second
        MessageBuilder builder = new DefaultMessageBuilder();
        format.formatRate(builder, 5.0);
        assertEquals("5.0 B/s", builder.build());

        // Test kilobytes per second
        builder = new DefaultMessageBuilder();
        format.formatRate(builder, 5500.0);

    server.listener.assertClosed(1000, "Hi!")
    taskFaker.runTasks()
    assertThat(client.closed).isTrue()
    server.listener.assertExhausted() // Client should not have sent second close.
    client.listener.assertExhausted() // Server should not have sent second close.
  }

  @Test
  fun serverCloseBreaksReadMessageLoop() {
    server.webSocket!!.send("Hello!")
    server.webSocket!!.close(1000, "Bye!")

        channelExecutor.shutdown();

        try {
            if (!healthCheckExecutor.awaitTermination(5, TimeUnit.SECONDS)) {
                healthCheckExecutor.shutdownNow();
            }
            if (!channelExecutor.awaitTermination(5, TimeUnit.SECONDS)) {
                channelExecutor.shutdownNow();
            }
        } catch (InterruptedException e) {

        testData.add(createRelatedQuery("test", new String[] { "second", "set" }, ""));
        mockBhv.setTestData(testData);

        relatedQueryHelper.load();

        // The second entry should overwrite the first one
        String[] results = relatedQueryHelper.getRelatedQueries("test");
        assertEquals(2, results.length);
        assertEquals("second", results[0]);
        assertEquals("set", results[1]);
    }

            return false;
        }

        return true;
    }

    /**
     * Get the Retry-After header value in seconds.
     * @return the retry after seconds
     */
    public int getRetryAfterSeconds() {
        return ComponentUtil.getFessConfig().getRateLimitRetryAfterSecondsAsInteger();
    }

    /**