scarlet_instance.kt

private val client = OkHttpClient.Builder()
        .addInterceptor(HttpLoggingInterceptor()
        .setLevel(HttpLoggingInterceptor.Level.BASIC))
        .build()

    private fun scarletLifecycle() = AndroidLifecycle.ofApplicationForeground(getApplication())

    private val service = Scarlet.Builder()
        .webSocketFactory(client.newWebSocketFactory(BASE_URL))
        .addStreamAdapterFactory(RxJava2StreamAdapterFactory())
        .addMessageAdapterFactory(GsonMessageAdapter.Factory())
        .lifecycle(scarletLifecycle())
        .build()
        .create(BitcoinService::class.java)