Re: [jetty-users] RMI Server on loopback

[Joakim Erdfelt <joakim@xxxxxxxxxxx>]

I think you meant the jmx ConnectorServer, not the ConnectorService

That address (127.0.0.4) is loopback, and will start the JMX registry.

Test it yourself.

        InetAddress addr = InetAddress.getByName("127.0.0.4");

        System.out.printf("Addr %s isLoopbackAddress = %b%n", addr, addr.isLoopbackAddress());

If you get false, then you have a more fundamental configuration issue to noodle through, as the default implementation of java.net.Inet4Address.isLoopbackAddress() just checks that the first octet for the IP is 127.

Joakim Erdfelt / joakim@xxxxxxxxxxx

On Tue, Jan 26, 2016 at 4:54 PM, Steven Katz <steven.katz@xxxxxxxxxxx> wrote:

I'm trying to start jetty so that jmx and the rmi registry are started on a loopback address (specifically, 127.0.0.4).  The code seem to specifically disallow this.  

From ConnectorService:

        if(hostAddress.isLoopbackAddress())

        {

            if (rmiPort == 0)

            {

                ServerSocket socket = new ServerSocket(0);

                rmiPort = socket.getLocalPort();

                socket.close();

            }

            else

            {

                try

                {

                    // Check if a local registry is already running

                    LocateRegistry.getRegistry(rmiPort).list();

                    return null;

                }

                catch (Exception ex)

                {

                    LOG.ignore(ex);

                }

            }

            _registry = LocateRegistry.createRegistry(rmiPort);

            Thread.sleep(1000);

            rmiHost = InetAddress.getLocalHost().getCanonicalHostName();

            return rmiHost + ':' + Integer.toString(rmiPort);

        }

Does anyone know why this is the case or a way I can work around it?

Steven Katz | Senior Director, Architecture
AolPlatforms.

office: 617.874.5448

email: steven.katz@xxxxxxxxxxx

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