Make an http GET request with Akka Http

build.sbt

name := """http-client"""

version := "1.0"

scalaVersion := "2.11.7"

libraryDependencies ++= Seq(
  "com.typesafe.akka" %% "akka-http-experimental" % "2.4.2"
)

HttpClient.scala

package com.dvMENTALmadness

import akka.actor.ActorSystem
import akka.stream.ActorMaterializer
import akka.http.scaladsl.Http
import akka.http.scaladsl.model._
import scala.concurrent.Await
import scala.concurrent.ExecutionContext.Implicits.global
import scala.concurrent.duration._

object HttpClient {
  import akka.http.scaladsl.unmarshalling.Unmarshal
    implicit val system = ActorSystem("http-client")
    implicit val materializer = ActorMaterializer()

  def main(args: Array[String]) : Unit = {

    var html = Await.result(get("http://akka.io"), 10.seconds)
    println(html) 

    println("Shutting down...")
    Http().shutdownAllConnectionPools().foreach(_ => system.terminate)
  }

  def get(uri: String) = {
    val request = HttpRequest(HttpMethods.GET, uri)
    for {
      response <- Http().singleRequest(request)
      content <- Unmarshal(response.entity).to[String]
    } yield content
  }
}

ATM, akka-http-core is no longer "experimental", however akka-http still requires the "experimental" designation