Akka UDP : 127.0.0.1이 아닌 대상으로 보낼 때 "잘못된 인수"

Question

나는 akka.net.Udp을 사용하여 UDP 패킷 (아래 코드)을 보냅니다. 로컬 컴퓨터 (127.0.0.1)로 보내면 문제가 없지만 다른 IP 주소로 동일한 코드를 실행하자마자 akka는 "잘못된 인수"(아래 출력)에 불만을 표시합니다.

어떤 아이디어가 잘못 되었나요? 대상으로 127.0.0.1와

[DEBUG] [06/20/2016 11:54:39.753] [main] [EventStream(akka://Main)] logger log1-Logging$DefaultLogger started 
[DEBUG] [06/20/2016 11:54:39.754] [main] [EventStream(akka://Main)] Default Loggers started 
[DEBUG] [06/20/2016 11:54:39.851] [Main-akka.actor.default-dispatcher-2] [akka://Main/system/IO-UDP-FF/selectors/$a/0] Successfully bound to [/127.0.0.1:2222] 
[INFO] [06/20/2016 11:54:40.783] [Main-akka.actor.default-dispatcher-5] [akka://Main/user/app/udp4] Send to /131.179.196.46:6363: ByteString(104, 101, 108, 108, 111, 32, 119, 111, 114, 108, 100) 
[DEBUG] [06/20/2016 11:54:40.789] [Main-akka.actor.default-dispatcher-5] [akka://Main/system/IO-UDP-FF/selectors/$a/0] Invalid argument 
[DEBUG] [06/20/2016 11:54:40.791] [Main-akka.actor.default-dispatcher-3] [akka://Main/system/IO-UDP-FF/selectors/$a/0] Closing DatagramChannel after being stopped 

출력 : 로컬 컴퓨터 이외의 대상으로

package debug 

import akka.actor.{Actor, ActorLogging, ActorRef, Props} 
import java.net.InetSocketAddress 
import akka.io.{IO, Udp} 
import akka.util.ByteString 


class SocketTest extends Actor with ActorLogging { 

    val dest = new InetSocketAddress("131.179.196.46", 6363)  // Invalid argument 
    // val dest = new InetSocketAddress("127.0.0.1", 6363)   // works fine 
    val udp = context.actorOf(Props(classOf[UDP4]), name="udp4") 

    // send 
    Thread.sleep(1000) 
    udp ! (dest, ByteString("hello world")) 

    Thread.sleep(99999) 
    def receive = {???} 

} 

class UDP4 extends Actor with ActorLogging { 

    val local = new InetSocketAddress("127.0.0.1", 2222) 

    import context.system 
    IO(Udp) ! Udp.Bind(self, local) 

    def receive: Receive = { 
    case Udp.Bound(local) => context.become(ready(sender)) 
    } 

    def ready(connection:ActorRef): Receive = { 
    case (remote:InetSocketAddress, data:ByteString) => { 
     log.info(s"Send to ${remote}: ${data}") 
     connection ! Udp.Send(data, remote) 
    } 
    case Udp.Received(data, remote) => log.info(s"Receive from ${remote}: ${data}") 
    case Udp.Unbind => connection ! Udp.Unbind 
    case Udp.Unbound => context.stop(self) 
    } 

} 

출력

[DEBUG] [06/20/2016 11:55:37.213] [main] [EventStream(akka://Main)] logger log1-Logging$DefaultLogger started 
[DEBUG] [06/20/2016 11:55:37.214] [main] [EventStream(akka://Main)] Default Loggers started 
[DEBUG] [06/20/2016 11:55:37.280] [Main-akka.actor.default-dispatcher-4] [akka://Main/system/IO-UDP-FF/selectors/$a/0] Successfully bound to [/127.0.0.1:2222] 
[INFO] [06/20/2016 11:55:38.234] [Main-akka.actor.default-dispatcher-2] [akka://Main/user/app/udp4] Send to /127.0.0.1:6363: ByteString(104, 101, 108, 108, 111, 32, 119, 111, 114, 108, 100) 

Answer 1

문제는 다음 라인에 :

val local = new InetSocketAddress("127.0.0.1", 2222) 

req

val local = new InetSocketAddress("0.0.0.0", 2222) 

이 줄을 변경하면 코드가 원하는대로 작동합니다.