001/*
002 *  Licensed to the Apache Software Foundation (ASF) under one
003 *  or more contributor license agreements.  See the NOTICE file
004 *  distributed with this work for additional information
005 *  regarding copyright ownership.  The ASF licenses this file
006 *  to you under the Apache License, Version 2.0 (the
007 *  "License"); you may not use this file except in compliance
008 *  with the License.  You may obtain a copy of the License at
009 *  
010 *    http://www.apache.org/licenses/LICENSE-2.0
011 *  
012 *  Unless required by applicable law or agreed to in writing,
013 *  software distributed under the License is distributed on an
014 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 *  KIND, either express or implied.  See the License for the
016 *  specific language governing permissions and limitations
017 *  under the License. 
018 *  
019 */
020
021package org.apache.directory.api.util;
022
023
024import java.net.InetAddress;
025
026
027/**
028 * Network utils.
029 * 
030 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
031 */
032public final class Network
033{
034    /** The loopback address (ie, ::1 or 127.0.0.1 */
035    public static final InetAddress LOOPBACK = getLoopbackAddress();
036    
037    /** The loopback hostname */
038    public static final String LOOPBACK_HOSTNAME = getLoopbackHostName();
039
040    /**
041     * Private constructor.
042     */
043    private Network()
044    {
045    }
046
047    
048    private static String getLoopbackHostName()
049    {
050        InetAddress loopbackAddress = InetAddress.getLoopbackAddress();
051        return loopbackAddress.getCanonicalHostName();
052    }
053
054
055    private static InetAddress getLoopbackAddress()
056    {
057        return InetAddress.getLoopbackAddress();
058    }
059
060
061    /**
062     * Construct a LDAP URL using the loopback address.
063     * 
064     * @param port The port
065     * @return The Loopback URL
066     */
067    public static String ldapLoopbackUrl( int port )
068    {
069        return "ldap://" + LOOPBACK_HOSTNAME + ":" + port;
070    }
071}