* Prefer to alternate IP addresses from different address families, (IPv6 / IPv4), starting with IPv6.
 * Don't start a new attempt until 250 ms after the most recent attempt was started.
 * Keep whichever TCP connection succeeds first and cancel all the others.

        ).build()
    server.useHttps(handshakeCertificates.sslSocketFactory())
  }

  private fun Call.cancelLater(delay: Duration) {
    thread(name = "canceler") {
      sleep(delay.inWholeMilliseconds)
      cancel()
    }
  }

 *  Fix: Attempt to read the response body even if the server canceled the request. This will cause
    some calls to return nice error codes like `HTTP/1.1 429 Too Many Requests` instead of transport
    errors like `SocketException: Connection reset` and `StreamResetException: stream was reset:
    CANCEL`.
 *  New: Support OSGi metadata.
 *  Upgrade: [Okio 2.9.0][okio_2_9_0].

    ```kotlin

            } else if (crawlerContext.getMaxDepth() < 0 || urlQueue.getDepth() <= crawlerContext.getMaxDepth()) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Canceled urlQueue: {}", urlQueue);
                }
                // cancel crawling
                crawlerContext.decrementAndGetAccessCount();
                final List<UrlQueue<?>> newUrlQueueList = new ArrayList<>();

Context timeouts are propagated, and a default timeout of 1 minute is added if none is specified.

There is no cancellation propagation for single payload requests.
When the context is canceled, the request will return at once with an appropriate error.
However, the remote call will not see the cancellation - as can be seen from the 'missing' context on the handler.
The result will be discarded.

### Typed handlers

        this.scheduledDelegate = scheduledDelegate;
      }

      @Override
      public boolean cancel(boolean mayInterruptIfRunning) {
        boolean cancelled = super.cancel(mayInterruptIfRunning);
        if (cancelled) {
          // Unless it is cancelled, the delegate may continue being scheduled
          scheduledDelegate.cancel(mayInterruptIfRunning);

          /*

    public static final int OK = 0; // OK
    public static final int ERROR = 1; // "generic" error
    public static final int BAD_OPERATION = 2; // bad user input or alike
    public static final int CANCELED = 3; // user canceled

    public EncryptInvoker(Lookup protoLookup, @Nullable Consumer<LookupContext> contextConsumer) {
        super(protoLookup, contextConsumer);
    }

    @Override

    public static final int OK = 0; // OK
    public static final int ERROR = 1; // "generic" error
    public static final int BAD_OPERATION = 2; // bad user input or alike
    public static final int CANCELED = 3; // user canceled

    public UpgradeInvoker(Lookup protoLookup, @Nullable Consumer<LookupContext> contextConsumer) {
        super(protoLookup, contextConsumer);
    }

    @Override

            constructor.setAccessible(true);
            SmbComNtCancel cancel = constructor.newInstance(config, testMid);

            // Then
            assertNotNull(cancel);
            assertEquals(testMid, cancel.getMid());
            assertTrue(cancel.isCancel());
        }
    }

    @Nested
    @DisplayName("Method Behavior Tests")

	timeoutCtx, cancel := context.WithTimeout(ctx, defaultContextTimeout)
	defer cancel()

	_, err := client.Delete(timeoutCtx, key)
	etcdLogIf(ctx, err)
	return etcdErrToErr(err, client.Endpoints())
}

func readKeyEtcd(ctx context.Context, client *etcd.Client, key string) ([]byte, error) {
	timeoutCtx, cancel := context.WithTimeout(ctx, defaultContextTimeout)
	defer cancel()
	resp, err := client.Get(timeoutCtx, key)