/*
* JBoss, Home of Professional Open Source.
* Copyright 2012, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This 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 software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
/**
*
*/
package org.jboss.as.controller.interfaces;
import java.io.ObjectStreamException;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
/**
* {@link InterfaceCriteria} that tests whether a given interface is a
* {@link NetworkInterface#isLoopback() loopback interface}
*
* @author Brian Stansberry
*/
public class LoopbackInterfaceCriteria extends AbstractInterfaceCriteria {
private static final long serialVersionUID = 1922501758657303593L;
public static final LoopbackInterfaceCriteria INSTANCE = new LoopbackInterfaceCriteria();
private LoopbackInterfaceCriteria() {}
/**
* {@inheritDoc}
*
* @return <code>address</code> if {@link NetworkInterface#isLoopback()} is true, null otherwise.
*/
@Override
protected InetAddress isAcceptable(NetworkInterface networkInterface, InetAddress address) throws SocketException {
if( networkInterface.isLoopback() )
return address;
return null;
}
private Object readResolve() throws ObjectStreamException {
return INSTANCE;
}
}