log.warn("NTLMv1 NTLM response is deprecated and insecure. Consider using NTLMv2.");
            yield NtlmUtil.getNTLMResponse(getPasswordAsCharArray(), chlng);
        }
        case 3, 4, 5 -> {
            // NTLMv2 - returns empty for unicode hash as NTLMv2 doesn't use it
            yield new byte[0];
        }
        default -> {
            // Default to NTLMv2 behavior (empty response)

    scope: Annotated[
        Literal["function", "request"] | None,
        Doc(
            """
            Mainly for dependencies with `yield`, define when the dependency function
            should start (the code before `yield`) and when it should end (the code
            after `yield`).

            * `"function"`: start the dependency before the *path operation function*

 * A Windows SID is a numeric identifier used to represent Windows
 * accounts. SIDs are commonly represented using a textual format such as
 * {@code S-1-5-21-1496946806-2192648263-3843101252-1029} but they may
 * also be resolved to yield the name of the associated Windows account
 * such as {@code Administrators} or {@code MYDOM\alice}.
 * <p>
 * Consider the following output of {@code examples/SidLookup.java}:
 *
 * <pre>

 * accounts. SIDs are commonly represented using a textual format such as
 * <code>S-1-5-21-1496946806-2192648263-3843101252-1029</code> but they may
 * also be resolved to yield the name of the associated Windows account
 * such as <code>Administrators</code> or <code>MYDOM\alice</code>.
 * <p>
 * Consider the following output of <code>examples/SidLookup.java</code>:
 *
 * <pre>

      afe.initCause(t);
      throw afe;
    }
  }

  /**
   * Delays, via Thread.sleep, for the given millisecond delay, but if the sleep is shorter than
   * specified, may re-sleep or yield until time elapses.
   */
  @SuppressWarnings("ThreadPriorityCheck") // TODO: b/175898629 - Consider onSpinWait?
  static void delay(long millis) throws InterruptedException {
    long startTime = System.nanoTime();

* 它接收你的应用的每一个**请求**。
* 然后它可以对这个**请求**做一些事情或者执行任何需要的代码。
* 然后它将这个**请求**传递给应用程序的其他部分（某个*路径操作*）处理。
* 之后它获取应用程序生成的**响应**（由某个*路径操作*产生）。
* 它可以对该**响应**做一些事情或者执行任何需要的代码。
* 然后它返回这个**响应**。

/// note | 技术细节

如果你有使用 `yield` 的依赖，依赖中的退出代码会在中间件之后运行。

如果有任何后台任务（会在[后台任务](background-tasks.md)一节中介绍，你稍后会看到），它们会在所有中间件之后运行。

///

## 创建中间件 { #create-a-middleware }

要创建中间件，你可以在函数的顶部使用装饰器 `@app.middleware("http")`。

中间件函数会接收：

      afe.initCause(t);
      throw afe;
    }
  }

  /**
   * Delays, via Thread.sleep, for the given millisecond delay, but if the sleep is shorter than
   * specified, may re-sleep or yield until time elapses.
   */
  @SuppressWarnings("ThreadPriorityCheck") // TODO: b/175898629 - Consider onSpinWait?
  static void delay(long millis) throws InterruptedException {
    long startTime = System.nanoTime();

There may be many routes for a single address. For example, a webserver that is hosted in multiple datacenters may yield multiple IP addresses in its DNS response.

In limited situations OkHttp will retry a route if connecting fails:

Using resources from dependencies with `yield` in background tasks is no longer supported.

This change is what supports the new features, read below. 🤓

### Dependencies with `yield`, `HTTPException` and Background Tasks

Dependencies with `yield` now can raise `HTTPException` and other exceptions after `yield`. 🎉

      .toUrl()
      .openConnection()
      .getInputStream() // Should succeed.
  }

  /**
   * Throttle the request body by sleeping 500ms after every 3 bytes. With a 6-byte request, this
   * should yield one sleep for a total delay of 500ms.
   */
  @Test
  fun throttleRequest() {
    assumeNotWindows()
    server.enqueue(
      MockResponse()
        .throttleBody(3, 500, TimeUnit.MILLISECONDS),
    )