Discovery.java

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package ros.zeroconf.jmdns.demos;

import java.io.IOException;
import java.util.List;
import org.ros.message.zeroconf_comms.DiscoveredService;
import ros.zeroconf.jmdns.Zeroconf;
import ros.zeroconf.jmdns.StandardLogger;

public class Discovery {
        
        public static void main_handler(String argv[]) throws IOException {
        Zeroconf zeroconf = new Zeroconf(new StandardLogger());
        DiscoveryHandler listener = new DiscoveryHandler();
                zeroconf.setDefaultDiscoveryCallback(listener);
        zeroconf.addListener("_ros-master._tcp","local");
//        zeroconf.addListener("_ros-master._udp","local");
//        zeroconf.addListener("_concert-master._tcp","local");
//        zeroconf.addListener("_concert-master._udp","local");
//        zeroconf.addListener("_app-manager._tcp","local");
//        zeroconf.addListener("_app-manager._udp","local");
        while(true) {
                try {
                        Thread.sleep(1000L);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
        }
    }

    public static void main_polling(String argv[]) throws IOException {
        Zeroconf browser = new Zeroconf(new StandardLogger());
        browser.addListener("_ros-master._tcp","local");
        int i = 0;
        while( i < 8 ) {
                try {
                        List<DiscoveredService> discovered_services = browser.listDiscoveredServices();
                        if ( discovered_services.size() > 0 ) {
                                System.out.println("************ Discovered Services ************");
                                for ( DiscoveredService discovered_service : discovered_services ) {
                                        browser.display(discovered_service);
                                }
                        } else {
                                System.out.println("Waiting for resolvers...");
                        }
                        Thread.sleep(1000L);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                ++i;
        }
        browser.removeListener("_ros-master._tcp","local");
        browser.shutdown();
    }


}