/*
* Created on Jun 11, 2009
* Created by Paul Gardner
*
* Copyright 2009 Vuze, Inc. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License only.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*/
package com.aelitis.azureus.core.util;
import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.List;
import org.gudy.azureus2.core3.util.Debug;
public class
DNSUtils
{
private static DNSUtilsIntf impl;
static{
String cla = System.getProperty( "az.factory.dnsutils.impl", "com.aelitis.azureus.core.util.dns.DNSUtilsImpl" );
try{
impl = (DNSUtilsIntf)Class.forName( cla ).newInstance();
}catch( Throwable e ){
//Debug.out( "Failed to instantiate impl: " + cla, e );
}
}
public static DNSUtilsIntf
getSingleton()
{
return( impl );
}
public interface
DNSUtilsIntf
{
public DNSDirContext
getInitialDirContext()
throws Exception;
public DNSDirContext
getDirContextForServer(
String dns_server_ip )
throws Exception;
public Inet6Address
getIPV6ByName(
String host )
throws UnknownHostException;
public List<InetAddress>
getAllByName(
String host )
throws UnknownHostException;
public List<InetAddress>
getAllByName(
DNSUtils.DNSDirContext context,
String host )
throws UnknownHostException;
public List<String>
getTXTRecords(
String query );
public String
getTXTRecord(
String query )
throws UnknownHostException;
}
public interface
DNSDirContext
{
public String
getString();
}
}