Check if a remote HTTP server is accessible or not (DNS resolution test only is not enough)

gistfile1.scala

  import scala.concurrent._
  import ExecutionContext.Implicits.global

  val f = future { new java.net.URL("http://mvnrepository.com/artifact/com.jcraft/jsch").openConnection() }
    .map { cnx =>
       cnx.setConnectTimeout(5000)
       cnx.setReadTimeout(5000)
       cnx.setAllowUserInteraction(false)
       cnx.setUseCaches(false)
       cnx }
    .map { _.getInputStream }
    .map { io.Source.fromInputStream(_) }
    .collect { case x => println("then download latest release") }
    .recover { case _ => println("then only use local backup") }

  //Await.ready(f, duration.Duration.Inf)