Bug18797NonReproducer.scala

import akka.actor.ActorSystem
import akka.http.scaladsl._
import akka.http.scaladsl.model.{HttpMethods, Uri, HttpRequest}
import akka.stream.ActorMaterializer
import scala.concurrent.duration._
import scala.concurrent.Await

object Bug18797 {

 def main(args: Array[String]): Unit = {
   implicit val system = ActorSystem("reproducer")
   implicit val mat = ActorMaterializer()
   import system.dispatcher

   val uri = Uri("http://www.google.com")
   val done = Http(system).singleRequest(HttpRequest(method = HttpMethods.GET, uri)).flatMap { response1 =>
     println("Got response 1")
     Http(system).singleRequest(HttpRequest(method = HttpMethods.GET, uri)).map { response2 =>
       println("Got response 2")
     }
   }
   
   Await.result(done, 30.seconds)
   system.shutdown()

 }
}