@Test
  fun testHttp2() {
    val client = HttpAsyncClients.createHttp2Default()

    client.use { client ->
      client.start()
      val request = SimpleHttpRequests.get("https://google.com/robots.txt")
      val response = client.execute(request, LoggingCallback).get()

      println("Protocol ${response.version}")
      println("Response ${response.code}")

    assertEquals(listOf("TLSv1.3", "TLSv1.2"), s.enabledProtocols.toList())
  }

  @Test
  @Disabled
  fun testMozilla() {
    assumeNetwork()

    val request = Request.Builder().url("https://mozilla.org/robots.txt").build()

    client.newCall(request).execute().use {
      assertThat(it.protocol).isEqualTo(Protocol.HTTP_2)
      assertThat(it.handshake!!.tlsVersion).isEqualTo(TlsVersion.TLS_1_3)
    }
  }

  @Test

    val dohEnabledClient =
      client.newBuilder().eventListener(EventListener.NONE).dns(dohDns).build()

    dohEnabledClient.get("https://www.twitter.com/robots.txt")
    dohEnabledClient.get("https://www.facebook.com/robots.txt")
  }

  @Test
  fun testCustomTrustManager() {
    assumeNetwork()

    val trustManager =
      object : X509TrustManager {

      "https://www.allizom.org/robots.txt",
      "https://tls13.crypto.mozilla.org/",
      "https://tls.ctf.network/robots.txt",
      "https://rustls.jbp.io/",
      "https://h2o.examp1e.net",
      "https://mew.org/",
      "https://tls13.baishancloud.com/",
      "https://tls13.akamai.io/",
      "https://swifttls.org/",
      "https://www.googleapis.com/robots.txt",
      "https://graph.facebook.com/robots.txt",

    engine.shutdown()
    cacheDir.deleteRecursively()
  }

  @Test
  fun get() {
    val executor = Executors.newCachedThreadPool()

    val completableFuture = execute(engine, executor, "https://google.com/robots.txt")

    try {
      val response = completableFuture.get(10, TimeUnit.SECONDS)

      assertEquals(200, response.code)
      assertEquals("h3", response.negotiatedProtocol)

        .cache(Cache(FakeFileSystem(), "/cache".toPath(), 10_000_000))
        .build()
  }

  @Test
  fun testRequestExternal() {
    assumeNetwork()

    val request = Request("https://www.google.com/robots.txt".toHttpUrl())

    val networkRequest =
      request.newBuilder()
        .build()

    val call = client.newCall(networkRequest)

    call.execute().use { response ->

        .addHeader("Cookie: s=square")
        .addHeader("Cookie: a=android")
        .addHeader("Cookies: delicious")
    response.setHeader("cookie", "r=robot")
    assertThat(headersToList(response))
      .containsExactly("Cookies: delicious", "cookie: r=robot")
  }

  @Test
  fun mockResponseSetHeaders() {
    val response =
      MockResponse()
        .clearHeaders()

 * chain. The chain terminates in a self-signed "root" certificate. Signing certificates in the
 * middle of the chain are called "intermediates". Organizations that offer certificate signing are
 * called certificate authorities (CAs).
 *
 * Browsers and other HTTP clients need a set of trusted root certificates to authenticate their
 * peers. Sets of root certificates are managed by either the HTTP client (like Firefox), or the

      .isEqualTo(clientHandshake.localCertificates)
  }

  @Test fun keyManager() {
    val root =
      HeldCertificate.Builder()
        .certificateAuthority(1)
        .build()
    val intermediate =
      HeldCertificate.Builder()
        .certificateAuthority(0)
        .signedBy(root)
        .build()
    val certificate =
      HeldCertificate.Builder()
        .signedBy(intermediate)

    platform.assumeNotBouncyCastle()
    serverRootCa =
      HeldCertificate.Builder()
        .serialNumber(1L)
        .certificateAuthority(1)
        .commonName("root")
        .addSubjectAlternativeName("root_ca.com")
        .build()
    serverIntermediateCa =
      HeldCertificate.Builder()
        .signedBy(serverRootCa)
        .certificateAuthority(0)
        .serialNumber(2L)