server.useHttps(serverCertificates.sslSocketFactory())
    server.enqueue(MockResponse())

    val clientCertificates =
      HandshakeCertificates.Builder()
        .addPlatformTrustedCertificates()
        .addInsecureHost(server.hostName)
        .build()

    val client =
      clientTestRule.newClientBuilder()
        .sslSocketFactory(clientCertificates.sslSocketFactory(), clientCertificates.trustManager)
        .build()

          .setHeader("Location", "https://www.google.com/robots.txt"),
      )
    }

  val clientCertificates =
    HandshakeCertificates.Builder()
      .addPlatformTrustedCertificates()
      .addInsecureHost(server.hostName)
      .build()

  val client =
    OkHttpClient.Builder()
      .sslSocketFactory(clientCertificates.sslSocketFactory(), clientCertificates.trustManager)
      .build()

  fun run() {

    val clientCertificates =
      HandshakeCertificates.Builder()
        .addPlatformTrustedCertificates()
        .apply {
          if (Build.VERSION.SDK_INT >= 24) {
            addInsecureHost(server.hostName)
          }
        }
        .build()

    client =
      client.newBuilder()
        .sslSocketFactory(clientCertificates.sslSocketFactory(), clientCertificates.trustManager)

## Version 4.7.1

_2020-05-18_

 *  Fix: Pass the right arguments in the trust manager created for `addInsecureHost()`. Without the
    fix insecure hosts crash with an `IllegalArgumentException` on Android.


## Version 4.7.0

_2020-05-17_

 *  New: `HandshakeCertificates.Builder.addInsecureHost()` makes it easy to turn off security in

     * a mechanism to trust some hosts and not others.
     *
     * @param hostname the exact hostname from the URL for insecure connections.
     */
    fun addInsecureHost(hostname: String) =
      apply {
        insecureHosts += hostname
      }

    fun build(): HandshakeCertificates {
      val immutableInsecureHosts = insecureHosts.toImmutableList()