This library is licensed under the Apache License Version 2.0. Please see the file NOTICE.txt.

Arthur van Hoff avh@strangeberry.com

Rick Blair rickblair@mac.com

Kai Kreuzer kai@openhab.org

JmDNS

This is an implemenation of multi-cast DNS in Java. It supports service discovery and service registration. It is fully interoperable with Apple's Bonjour.

Sample Code for Service Registration

    import java.io.IOException;
    import java.net.InetAddress;

    import javax.jmdns.JmDNS;
    import javax.jmdns.ServiceInfo;

    public class ExampleServiceRegistration {

        public static void main(String[] args) throws InterruptedException {

            try {
                // Create a JmDNS instance
                JmDNS jmdns = JmDNS.create(InetAddress.getLocalHost());

                // Register a service
                ServiceInfo serviceInfo = ServiceInfo.create("_http._tcp.local.", "example", 1234, "path=index.html");
                jmdns.registerService(serviceInfo);

                // Wait a bit
                Thread.sleep(25000);

                // Unregister all services
                jmdns.unregisterAllServices();

            } catch (IOException e) {
                System.out.println(e.getMessage());
            }
        }
    }

Sample code for Service Discovery

    import java.io.IOException;
    import java.net.InetAddress;
    import java.net.UnknownHostException;

    import javax.jmdns.JmDNS;
    import javax.jmdns.ServiceEvent;
    import javax.jmdns.ServiceListener;

    public class ExampleServiceDiscovery {

        private static class SampleListener implements ServiceListener {
            @Override
            public void serviceAdded(ServiceEvent event) {
                System.out.println("Service added: " + event.getInfo());
            }

            @Override
            public void serviceRemoved(ServiceEvent event) {
                System.out.println("Service removed: " + event.getInfo());
            }

            @Override
            public void serviceResolved(ServiceEvent event) {
                System.out.println("Service resolved: " + event.getInfo());
            }
        }

        public static void main(String[] args) throws InterruptedException {
            try {
                // Create a JmDNS instance
                JmDNS jmdns = JmDNS.create(InetAddress.getLocalHost());
                
                // Add a service listener
                jmdns.addServiceListener("_http._tcp.local.", new SampleListener());

                // Wait a bit
                Thread.sleep(30000);
            } catch (UnknownHostException e) {
                System.out.println(e.getMessage());
            } catch (IOException e) {
                System.out.println(e.getMessage());
            }
        }
    }