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 */ 020 021 package org.apache.directory.server.dhcp.options.dhcp; 022 023 024 import java.net.InetAddress; 025 026 import org.apache.directory.server.dhcp.options.AddressOption; 027 028 029 /** 030 * This option is used in DHCPOFFER and DHCPREQUEST messages, and may 031 * optionally be included in the DHCPACK and DHCPNAK messages. DHCP 032 * servers include this option in the DHCPOFFER in order to allow the 033 * client to distinguish between lease offers. DHCP clients use the 034 * contents of the 'server identifier' field as the destination address 035 * for any DHCP messages unicast to the DHCP server. DHCP clients also 036 * indicate which of several lease offers is being accepted by including 037 * this option in a DHCPREQUEST message. 038 * 039 * The identifier is the IP address of the selected server. 040 * 041 * The code for this option is 54, and its length is 4. 042 * 043 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 044 * @version $Rev: 638228 $, $Date: 2008-03-18 07:12:41 +0100 (Tue, 18 Mar 2008) $ 045 */ 046 public class ServerIdentifier extends AddressOption 047 { 048 public ServerIdentifier() 049 { 050 } 051 052 053 public ServerIdentifier(InetAddress localHost) 054 { 055 setAddress( localHost ); 056 } 057 058 059 /* 060 * @see org.apache.directory.server.dhcp.options.DhcpOption#getTag() 061 */ 062 public byte getTag() 063 { 064 return 54; 065 } 066 }