/*
* Created on May 29, 2014
* Created by Paul Gardner
*
* Copyright 2014 Azureus Software, 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.dht.transport.udp.impl;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import org.gudy.azureus2.core3.util.BDecoder;
import org.gudy.azureus2.core3.util.SystemTime;
import com.aelitis.azureus.core.dht.transport.DHTTransportAlternativeContact;
public class
DHTTransportAlternativeContactImpl
implements DHTTransportAlternativeContact
{
private final byte network_type;
private final byte version;
private final short initial_age;
private final byte[] encoded;
private final int id;
private final int start_time = (int)( SystemTime.getMonotonousTime()/1000 );
protected
DHTTransportAlternativeContactImpl(
byte _network_type,
byte _version,
short _age,
byte[] _encoded )
{
network_type = _network_type;
version = _version;
initial_age = _age<0?Short.MAX_VALUE:_age;
encoded = _encoded;
id = Arrays.hashCode( encoded );
}
public int
getNetworkType()
{
return( network_type&0xff );
}
public int
getVersion()
{
return( version&0xff );
}
public int
getID()
{
return( id );
}
public int
getLastAlive()
{
return( start_time - initial_age );
}
public int
getAge()
{
if ( initial_age < 0 ){
return( Short.MAX_VALUE );
}
int elapsed = ((int)( SystemTime.getMonotonousTime()/1000 )) - start_time;
int rem = Short.MAX_VALUE - initial_age;
if ( rem < elapsed ){
return( Short.MAX_VALUE );
}else{
return((short)( initial_age + elapsed ));
}
}
public Map<String,Object>
getProperties()
{
try{
return( BDecoder.decode( encoded ));
}catch( Throwable e ){
return( new HashMap<String,Object>());
}
}
}