private var keySize: Int = 0

    init {
      ecdsa256()
    }

    /**
     * Sets the certificate to be valid in ```[notBefore..notAfter]```. Both endpoints are specified
     * in the format of [System.currentTimeMillis]. Specify -1L for both values to use the default
     * interval, 24 hours starting when the certificate is created.
     */
    fun validityInterval(
      notBefore: Long,
      notAfter: Long,

        .url("https://publicobject.com/helloworld.txt")
        .build();

    System.out.println("REQUEST 1 (new connection)");
    try (Response response = client.newCall(request).execute()) {
      // Consume and discard the response body.
      response.body().source().readByteString();
    }

    System.out.println("REQUEST 2 (pooled connection)");
    try (Response response = client.newCall(request).execute()) {

      assertThat(response.body.string()).contains("h=cloudflare-dns.com")
    }
  }

  @Test
  fun getWithDns() {
    client =
      client.newBuilder()
        .dns {
          Dns.SYSTEM.lookup("sni.cloudflaressl.com")
        }
        .build()

    val request =
      Request.Builder()
        .url("https://cloudflare-dns.com/cdn-cgi/trace")
        .build()

    assertThat(cs.hashCode(), cs.toString())
      .isEqualTo(System.identityHashCode(cs))
  }

  @Test
  fun hashCode_usesIdentityHashCode_regularCase() {
    // This one's javaName matches the identifier.
    val cs = CipherSuite.TLS_RSA_WITH_AES_128_CBC_SHA256
    assertThat(cs.hashCode(), cs.toString())
      .isEqualTo(System.identityHashCode(cs))
  }

  @Test
  fun instancesAreInterned() {

  val platform = PlatformRule()

  @Test
  fun testBuildsWithJettyBoot() {
    assumeTrue(System.getProperty("java.specification.version") == "1.8")
    platform.assumeJettyBootEnabled()
    assertThat(buildIfSupported()).isNotNull()
  }

  @Test
  fun testNotBuildWithOther() {
    assumeFalse(System.getProperty("java.specification.version") == "1.8")
    assertThat(buildIfSupported()).isNull()
  }

      String originalName = currentThread.getName();
      currentThread.setName("Crawler " + url);
      try {
        fetch(url);
      } catch (IOException e) {
        System.out.printf("XXX: %s %s%n", url, e);
      } finally {
        currentThread.setName(originalName);
      }
    }
  }

  public void fetch(HttpUrl url) throws IOException {

        .build();

    try (Response response = client.newCall(request).execute()) {
      if (!response.isSuccessful()) throw new IOException("Unexpected code " + response);

      System.out.println(response.handshake().cipherSuite());
      System.out.println(response.body().string());
    }
  }

  public static void main(String... args) throws Exception {
    new CustomCipherSuites().run();
  }

    val webSocket = newWebSocket()
    clientListener.assertOpen()
    val server = serverListener.assertOpen() as RealWebSocket
    val startNanos = System.nanoTime()
    while (webSocket.receivedPongCount() < 3) {
      Thread.sleep(50)
    }
    val elapsedUntilPong3 = System.nanoTime() - startNanos
    assertThat(TimeUnit.NANOSECONDS.toMillis(elapsedUntilPong3).toDouble())
      .isCloseTo(1500.0, 250.0)

 * [okhttp-stats](https://github.com/flipkart-incubator/okhttp-stats): Get stats like average network speed.
 * [okhttp-system-keystore](https://github.com/charleskorn/okhttp-system-keystore): Use trusted certificates from the operating system keystore (Keychain on macOS, Certificate Store on Windows).
 * ⬜️ [Okio](https://github.com/square/okio/): A modern I/O API for Java.

  /**
   * Returns a [timestamp][System.currentTimeMillis] taken immediately before OkHttp
   * transmitted the initiating request over the network. If this response is being served from the
   * cache then this is the timestamp of the original request.
   */
  @get:JvmName("sentRequestAtMillis") val sentRequestAtMillis: Long,
  /**
   * Returns a [timestamp][System.currentTimeMillis] taken immediately after OkHttp