client =
      client
        .newBuilder()
        .cache(cache)
        .build()
  }

  /** Test which headers are sent unencrypted to the HTTP proxy.  */
  @Test
  fun proxyConnectIncludesProxyHeadersOnly() {
    val hostnameVerifier = RecordingHostnameVerifier()
    server.useHttps(handshakeCertificates.sslSocketFactory())
    server.enqueue(
      MockResponse
        .Builder()