Akka Http processing

gistfile1.scala

 val func = (req: HttpServletRequest) => {
      // ASYNC SCOPE
      // heavy scope, actually this is a place async is needed for
      // async request might expire
      (res: HttpServletResponse) => {
        // RESPONSE SCOPE
        // lite scope for putting collected data to response, called if not expired
        (result: Boolean) => {
          // CALLBACK SCOPE
          // called to notify whether response sent successfully
        }
      }
    }