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()

HSPLokhttp3/ResponseBody;->string()Ljava/lang/String;
HSPLokhttp3/Route;-><init>(Lokhttp3/Address;Ljava/net/Proxy;Ljava/net/InetSocketAddress;)V
HSPLokhttp3/Route;->hashCode()I
HSPLokhttp3/TlsVersion;-><clinit>()V
HSPLokhttp3/TlsVersion;-><init>(Ljava/lang/String;ILjava/lang/String;)V
HSPLokhttp3/internal/Internal;->charset$default(Lokhttp3/MediaType;Ljava/nio/charset/Charset;I)Ljava/nio/charset/Charset;

    socket.supportedCipherSuites = arrayOf("TLS_A")
    socket.enabledCipherSuites = arrayOf("TLS_A")
    val connectionSpec =
      ConnectionSpec
        .Builder(true)
        .tlsVersions(TlsVersion.TLS_1_1, TlsVersion.TLS_1_2, TlsVersion.TLS_1_3)
        .cipherSuites("TLS_A")
        .build()
    applyConnectionSpec(connectionSpec, socket, false)
    assertArrayEquals(arrayOf("TLSv1.1", "TLSv1.2"), socket.enabledProtocols)
  }

        arrayOf(
          TlsVersion.SSL_3_0.javaName,
          TlsVersion.TLS_1_1.javaName,
          TlsVersion.TLS_1_2.javaName,
          TlsVersion.TLS_1_3.javaName,
        )
    } else {
      sslSocket.enabledProtocols =
        arrayOf(
          TlsVersion.SSL_3_0.javaName,
          TlsVersion.TLS_1_1.javaName,
          TlsVersion.TLS_1_2.javaName,
        )
    }

    application code that creates challenges.

 *  New: The `TlsVersion` of a `Handshake` is now non-null. If you are calling
    `Handshake.get()` with a null TLS version, you must instead now provide a
    non-null `TlsVersion`. Cache responses persisted prior to OkHttp 3.0 did not
    store a TLS version; for these unknown values the handshake is defaulted to
    `TlsVersion.SSL_3_0`.

 *  New: Upgrade to Okio 1.13.0.

     ```xml

          .request(request)
          .protocol(Protocol.HTTP_1_1)
          .code(200)
          .message("OK")
          .build()
      val handshake =
        Handshake.get(
          tlsVersion = TlsVersion.TLS_1_3,
          cipherSuite = CipherSuite.TLS_AES_128_GCM_SHA256,
          peerCertificates = listOf(),
          localCertificates = listOf(),
        )

      return mapOf(

    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)

```java
ConnectionSpec spec = new ConnectionSpec.Builder(ConnectionSpec.MODERN_TLS)
    .tlsVersions(TlsVersion.TLS_1_2)
    .cipherSuites(
          CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
          CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
          CipherSuite.TLS_DHE_RSA_WITH_AES_128_GCM_SHA256)

          )
        }
      }

      val certificatePinner = address.certificatePinner!!

      val handshake =
        Handshake(
          unverifiedHandshake.tlsVersion,
          unverifiedHandshake.cipherSuite,
          unverifiedHandshake.localCertificates,
        ) {
          certificatePinner.certificateChainCleaner!!.clean(
            unverifiedHandshake.peerCertificates,