.first()
      .cipherSuites!!
      .map {
        it.javaName
      }.intersect(defaultEnabledCipherSuites.toSet())

  private fun makeClient(
    connectionSpec: ConnectionSpec? = null,
    tlsVersion: TlsVersion? = null,
    cipherSuites: List<CipherSuite>? = null,
  ): OkHttpClient =
    this.client
      .newBuilder()
      .apply {
        if (connectionSpec != null) {
          connectionSpecs(

}

public final class okhttp3/TlsVersion : java/lang/Enum {
	public static final field Companion Lokhttp3/TlsVersion$Companion;
	public static final field SSL_3_0 Lokhttp3/TlsVersion;
	public static final field TLS_1_0 Lokhttp3/TlsVersion;
	public static final field TLS_1_1 Lokhttp3/TlsVersion;
	public static final field TLS_1_2 Lokhttp3/TlsVersion;
	public static final field TLS_1_3 Lokhttp3/TlsVersion;

 */
private val TLS_13 =
  ConnectionSpec
    .Builder(true)
    .cipherSuites(*TLS13_CIPHER_SUITES.toTypedArray())
    .tlsVersions(TlsVersion.TLS_1_3)
    .build()

private val TLS_12 =
  ConnectionSpec
    .Builder(ConnectionSpec.RESTRICTED_TLS)
    .tlsVersions(TlsVersion.TLS_1_2)
    .build()

private fun testClient(
  urls: List<String>,
  client: OkHttpClient,
) {
  try {
    for (url in urls) {

    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)
    }
  }

 * **Dispatcher**: executorService
 * **FormBody**: size
 * **Handshake**: cipherSuite, localCertificates, localPrincipal, peerCertificates, peerPrincipal,
   tlsVersion
 * **HandshakeCertificates**: keyManager, trustManager
 * **Headers**: size
 * **HeldCertificate**: certificate, keyPair
 * **HttpLoggingInterceptor**: level

          val localCertificates = readCertificateList(source)
          val tlsVersion =
            if (!source.exhausted()) {
              TlsVersion.forJavaName(source.readUtf8LineStrict())
            } else {
              TlsVersion.SSL_3_0
            }
          handshake = Handshake.get(tlsVersion, cipherSuite, peerCertificates, localCertificates)
        } else {
          handshake = null

        .build();

    Call call = client.newCall(new Request.Builder()
        .url(server.url("/"))
        .build());
    Response response = call.execute();
    System.out.println(response.handshake().tlsVersion());
  }

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

    val response = call.execute()
    assertThat(response.code).isEqualTo(200)
    assertThat(response.handshake!!.cipherSuite).isNotNull()
    assertThat(response.handshake!!.tlsVersion).isNotNull()
    assertThat(response.handshake!!.localCertificates).isEmpty()
    assertThat(response.handshake!!.localPrincipal).isNull()
    assertThat(response.handshake!!.peerCertificates).isEmpty()

    apply {
      assertThat(body).isEqualTo(expectedBody)
    }

  fun assertHandshake() =
    apply {
      val handshake = response!!.handshake!!
      assertThat(handshake.tlsVersion).isNotNull()
      assertThat(handshake.cipherSuite).isNotNull()
      assertThat(handshake.peerPrincipal).isNotNull()
      assertThat(handshake.peerCertificates.size).isEqualTo(1)

    assertContent("def", getResponse(newRequest("/")))
    val tlsVersions: Set<TlsVersion?> =
      EnumSet.of(
        TlsVersion.TLS_1_0,
        TlsVersion.TLS_1_2,
        TlsVersion.TLS_1_3,
      ) // v1.2 on OpenJDK 8.
    val request1 = server.takeRequest()
    assertThat(tlsVersions).contains(request1.handshake?.tlsVersion)
    val request2 = server.takeRequest()