Primitive Akka request-response code

Akka.kt

package org.jetbrains.akkatest

import akka.actor.*
import akka.routing.*

class Request
class Response

class Handler : UntypedActor() {
    override fun onReceive(message: Any): Unit = when (message) {
        is Request -> {
            println("Got request")
            getSender().tell(Response(), getSelf())
        }
        else -> unhandled(message)
    }
}

class Requester : UntypedActor() {
    val handler = getContext().actorOf(Props.create(javaClass<Handler>()))

    override fun preStart() {
        super.preStart()
        handler.tell(Request(), getSelf())
    }

    override fun onReceive(message: Any?): Unit = when (message) {
        is Response -> {
            println("Got response")
        }
        else -> unhandled(message)
    }
}

fun main(args: Array<String>) {
    ActorSystem.create().actorOf(Props.create(javaClass<Requester>()))
}