DouKaku?

import scala.actors._
import scala.actors.Actor._
import scala.actors.remote._
import scala.actors.remote.RemoteActor._
import java.io.ByteArrayOutputStream

val PORT = 9010

if(args.length>0 && args(0) == "server") {
//server side

  println("server:start")
  actor {
    alive(PORT)
    register('pricestring, self)
    loop {
      react{ 
        case (price:int, p:int) => 
          val s = new ByteArrayOutputStream
          Console.withOut[unit](s){
            printf("\u8ca9\u58f2\u4fa1\u683c {0}\u5186\uff08\u5b9a\u4fa1{1}\u5186\u304b\u3089{2}%\u5f15\u304d\uff09",
              (price*(1-p.toFloat/100)).ceil, price, p)
          }
          reply(s.toString)
      }
    }
  }

}else {
//client side

  val clientActor = actor {
    val c = select(Node("127.0.0.1", PORT), 'pricestring)
    loop {
      react {
        case r@(i:int,j:int) => reply((c!?r))
      }
    }
  }

  import scala.testing.Benchmark
  val test = new Benchmark {
    def run:unit = {
      var i = -1;while({i= i+1; i<10000}) {
        clientActor !? ((2000, 20))
      }
      return ()
    }
  }
  println(test.runBenchmark(1)(0)+" ms")
  System.exit(0)
}