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  1. JDK
  2. JDK-7164518

No PortUnreachableException when connecting to a non-existing DatagramSocket (mac)

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    • b12
    • x86
    • os_x

      This program calls send/receive after trying to connect to a non-existing DatagramSocket, it times out after 5 seconds without throwing a PortUnreachableException.

      Apple JDK 6 throws a PortUnreachableException immediately.

      import java.net.*;

      public class A1 {

          public static void main(String[] args) throws Exception {
              byte[] data = "hello".getBytes();
              InetAddress iaddr = InetAddress.getByName("localhost");
              DatagramSocket dgSocket = new DatagramSocket();
              dgSocket.setSoTimeout(5000);
              dgSocket.connect(iaddr, 8080);
              DatagramPacket dgPacketOut = new DatagramPacket(data, data.length,
                                                              iaddr, 8080);
              dgSocket.send(dgPacketOut);
              byte ibuf[] = new byte[1024];
              DatagramPacket dgPacketIn = new DatagramPacket(ibuf, ibuf.length);
              dgSocket.receive(dgPacketIn);
          }
      }

            pconcannon Patrick Concannon (Inactive)
            weijun Weijun Wang
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