private val listener: RecordingEventListener = RecordingEventListener()
  private val handshakeCertificates = platform.localhostHandshakeCertificates()
  private var client =
    clientTestRule
      .newClientBuilder()
      .eventListenerFactory(clientTestRule.wrap(listener))
      .build()
  private var socksProxy: SocksProxy? = null
  private var cache: Cache? = null

  @BeforeEach
  fun setUp() {

    if (protocol === Protocol.HTTP_2) {
      platform.assumeHttp2Support()
      server.useHttps(handshakeCertificates.sslSocketFactory())
      client =
        clientTestRule
          .newClientBuilder()
          .protocols(listOf(Protocol.HTTP_2, Protocol.HTTP_1_1))
          .sslSocketFactory(
            handshakeCertificates.sslSocketFactory(),
            handshakeCertificates.trustManager,