result.add(certificate.subjectDN.toString() + " " + certificate.serialNumber)
      }
      return result.toString()
    }
  }

  /**
   * Tests that use this will fail unless boot classpath is set. Ex. `-Xbootclasspath/p:/tmp/alpn-boot-8.0.0.v20140317`
   */
  private fun enableProtocol(protocol: Protocol) {
    client =
      client.newBuilder()
        .sslSocketFactory(

    } catch (e: IOException) {
      RecordedResponse(request, null, null, null, e)
    }
  }

  /**
   * Tests that use this will fail unless boot classpath is set. Ex. `-Xbootclasspath/p:/tmp/alpn-boot-8.0.0.v20140317`
   */
  private fun enableProtocol(protocol: Protocol) {
    enableTls()
    client =
      client.newBuilder()