.Builder()
        .addTrustedCertificate(serverRoot.certificate)
        .heldCertificate(clientCertificate, clientIntermediate.certificate)
        .build()
    val serverAddress = startTlsServer()
    val serverHandshakeFuture = doServerHandshake(server)
    val clientHandshakeFuture = doClientHandshake(client, serverAddress)
    val serverHandshake = serverHandshakeFuture.get()