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.server.dhcp.service;
022
023
024import java.net.InetSocketAddress;
025
026import org.apache.directory.server.dhcp.DhcpException;
027import org.apache.directory.server.dhcp.messages.DhcpMessage;
028
029
030/**
031 * DHCP Protocol (RFC 2131, RFC 2132). Implementations of the DHCP service must
032 * be thread-safe with respect to concurrent calls to getReplyFor().
033 * 
034 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
035 */
036public interface DhcpService
037{
038    /**
039     * Retrieve the reply to a given message. The reply may be zero, if the
040     * message should be ignored.
041     * @param localAddress TODO
042     * @param clientAddress 
043     * @param request
044     * @return DhcpMessage
045     * @throws DhcpException 
046     */
047    DhcpMessage getReplyFor( InetSocketAddress localAddress, InetSocketAddress clientAddress, DhcpMessage request )
048        throws DhcpException;
049}