/jboss-as-7.1.1.Final/controller/src/main/java/org/jboss/as/controller/interfaces/LoopbackInterfaceCriteria.java

 1/**
 2 *
 3 */
 4package org.jboss.as.controller.interfaces;
 5
 6import java.io.ObjectStreamException;
 7import java.net.InetAddress;
 8import java.net.NetworkInterface;
 9import java.net.SocketException;
10
11/**
12 * {@link InterfaceCriteria} that tests whether a given interface is a
13 * {@link NetworkInterface#isLoopback() loopback interface}
14 *
15 * @author Brian Stansberry
16 */
17public class LoopbackInterfaceCriteria implements InterfaceCriteria {
18
19    private static final long serialVersionUID = 1922501758657303593L;
20
21    public static final LoopbackInterfaceCriteria INSTANCE = new LoopbackInterfaceCriteria();
22
23    private LoopbackInterfaceCriteria() {}
24
25    /**
26     * {@inheritDoc}
27     *
28     * @return <code>address</code> if {@link NetworkInterface#isLoopback()} is true, null otherwise.
29     */
30    @Override
31    public InetAddress isAcceptable(NetworkInterface networkInterface, InetAddress address) throws SocketException {
32
33        if( networkInterface.isLoopback() )
34            return address;
35        return null;
36    }
37
38    private Object readResolve() throws ObjectStreamException {
39        return INSTANCE;
40    }
41
42}