main.java

很好地实现了DNS功能

// %Z%%M%, %I%, %G%
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

package com.strangeberry.jmdns.tools;

import java.io.*;
import java.net.*;
import java.util.*;
import javax.jmdns.*;

/**
 * Main sample program for JmDNS.
 *
 * @author	Arthur van Hoff, Werner Randelshofer
 * @version 	%I%, %G%
 */
public class Main {
    static class SampleListener implements ServiceListener, ServiceTypeListener {
        public void serviceAdded(ServiceEvent event) {
            System.out.println("ADD: " + event.getDNS().getServiceInfo(event.getType(), event.getName(), 3*1000));
        }
        public void serviceRemoved(ServiceEvent event) {
            System.out.println("REMOVE: " + event.getName());
        }
        public void serviceResolved(ServiceEvent event) {
            System.out.println("RESOLVED: " + event.getInfo());
        }
        public void serviceTypeAdded(ServiceEvent event) {
            System.out.println("TYPE: " + event.getType());
        }
    }
    
    public static void main(String argv[]) throws IOException {
        int argc = argv.length;
        boolean debug = false;
        InetAddress intf = null;
        
        if ((argc > 0) && "-d".equals(argv[0])) {
            System.arraycopy(argv, 1, argv, 0, --argc);
            System.getProperties().put("jmdns.debug", "1");
            debug = true;
        }
        if ((argc > 1) && "-i".equals(argv[0])) {
            intf = InetAddress.getByName(argv[1]);
            System.arraycopy(argv, 2, argv, 0, argc -= 2);
        }
        if (intf == null) {
            intf = InetAddress.getLocalHost();
        }
        
        JmDNS jmdns = new JmDNS(intf);
        
        if ((argc == 0) || ((argc >= 1) && "-browse".equals(argv[0]))) {
            new Browser(jmdns);
            for (int i = 2 ; i < argc ; i++) {
                jmdns.registerServiceType(argv[i]);
            }
        } else if ((argc == 1) && "-bt".equals(argv[0])) {
            jmdns.addServiceTypeListener(new SampleListener());
        } else if ((argc == 3) && "-bs".equals(argv[0])) {
            jmdns.addServiceListener(argv[1] + "." + argv[2], new SampleListener());
        } else if ((argc > 4) && "-rs".equals(argv[0])) {
            String type = argv[2] + "." + argv[3];
            String name = argv[1];
            Hashtable props = null;
            for (int i = 5 ; i < argc ; i++) {
                int j = argv[i].indexOf('=');
                if (j < 0) {
                    throw new RuntimeException("not key=val: " + argv[i]);
                }
                if (props == null) {
                    props = new Hashtable();
                }
                props.put(argv[i].substring(0, j), argv[i].substring(j+1));
            }
            jmdns.registerService(new ServiceInfo(type, name, Integer.parseInt(argv[4]), 0, 0, props));
            
            // This while loop keeps the main thread alive
            while (true) {
                try {
                    Thread.sleep(Integer.MAX_VALUE);
                } catch (InterruptedException e) {
                    break;
                }
            }
        } else if ((argc == 2) && "-f".equals(argv[0])) {
            new Responder(jmdns, argv[1]);
        } else if (!debug) {
            System.out.println();
            System.out.println("jmdns:");
            System.out.println("     -d                                       - output debugging info");
            System.out.println("     -i <addr>                                - specify the interface address");
            System.out.println("     -browse [<type>...]                      - GUI browser (default)");
            System.out.println("     -bt                                      - browse service types");
            System.out.println("     -bs <type> <domain>                      - browse services by type");
            System.out.println("     -rs <name> <type> <domain> <port> <txt>  - register service");
            System.out.println("     -f <file>                                - rendezvous responder");
            System.out.println();
            System.exit(1);
        }
    }
}