// 1. Server reads request and dequeues first response
      // 2. Client cancels request
      // 3. Server tries to send response on the canceled stream
      // Otherwise, there is no guarantee for the sequence. For example, the server may use the
      // first mocked response to respond to the second request.
      val response = super.dispatch(request)

}

.searchFormBox {
	margin-top: 8em;
	margin-bottom: 4em;
}

.notification {
	font-size: 1.2em;
	margin: 0.2em;
}

.searchButtonBox {
	margin-top: 1em;
}

/* search */

:first-child.list-group-item {
	border-radius: 0px;
}

:last-child.list-group-item {
	border-radius: 0px;
}

#result ol li {
	margin: 1em 0;
}

#result ol li:first-child {
	margin-top: 0;

以降のセクションでは、その他のオプション、設定、追加機能を見ていきます。

/// tip | 豆知識

以降のセクションは、**必ずしも「高度」ではありません**。

また、あなたのユースケースに対する解決策が、その中のどれかにある可能性もあります。

///

## 先にチュートリアルを読む { #read-the-tutorial-first }

メインの[チュートリアル - ユーザーガイド](../tutorial/index.md)で得た知識があれば、**FastAPI**の機能の多くは引き続き利用できます。

import javax.net.ssl.X509TrustManager
import okhttp3.Protocol
import org.bouncycastle.jsse.BCSSLSocket
import org.bouncycastle.jsse.provider.BouncyCastleJsseProvider

/**
 * Platform using BouncyCastle if installed as the first Security Provider.
 *
 * Requires org.bouncycastle:bctls-jdk15on on the classpath.
 */
class BouncyCastlePlatform private constructor() : Platform() {
  private val provider: Provider = BouncyCastleJsseProvider()

        // Each setInstance should create a new LogStream
        assertNotNull(instance1);
        assertNotNull(instance2);
        // The second setInstance replaces the first, so they should not be the same
        assertNotSame(instance1, instance2);
        // Getting instance again should return the same as instance2
        assertSame(instance2, LogStream.getInstance());
    }

    super(ImmutableMap.of(), 0, null);
  }

  /*
   * TODO(b/242884182): Figure out why this helps produce the same class file when we compile most
   * of common.collect a second time with the results of the first compilation on the classpath. Or
   * just back this out once we stop doing that (which we'll do after our internal GWT setup
   * changes).
   */
  @Override
  public ImmutableMap<Object, Collection<Object>> asMap() {

  }

  @Throws(IOException::class)
  private fun Proxy.connectToInetAddress(
    url: HttpUrl,
    dns: Dns,
  ): InetAddress =
    when (type()) {
      Proxy.Type.DIRECT -> dns.lookup(url.host).first()
      else -> (address() as InetSocketAddress).address
    }

    val startsFirst = buildRequestThread(firstRequest, firstResponseCode)
    startsFirst.start()
    val endsFirst = buildRequestThread(secondRequest, secondResponseCode)
    endsFirst.start()
    endsFirst.join()
    // First response is still waiting.
    assertThat(firstResponseCode.get()).isEqualTo(0)
    // Second response is done.
    assertThat(secondResponseCode.get()).isEqualTo(200)
    latch.countDown()
    startsFirst.join()

  /**
   * This counter prevents an ABA issue where a thread may successfully schedule the worker, the
   * worker runs and exhausts the queue, another thread enqueues a task and fails to schedule the
   * worker, and then the first thread's call to delegate.execute() returns. Without this counter,
   * it would observe the QUEUING state and set it to QUEUED, and the worker would never be
   * scheduled again for future submissions.
   */

///

### Lifespan function { #lifespan-function }

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_py310.py hl[14:19] *}

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