1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.net.dhcp; 18 19import java.net.InetAddress; 20import java.nio.ByteBuffer; 21import java.util.List; 22 23/** 24 * This class defines the "next steps" which occur after a given DHCP 25 * packet has been received. 26 */ 27interface DhcpStateMachine { 28 /** 29 * Signals that an offer packet has been received with the specified 30 * parameters. 31 */ 32 public void onOfferReceived(boolean broadcast, int transactionId, 33 byte[] myMac, InetAddress offeredIpAddress, 34 InetAddress serverIpAddress); 35 36 /** 37 * Signals that a NAK packet has been received. 38 */ 39 public void onNakReceived(); 40 41 /** 42 * Signals that the final ACK has been received from the server. 43 */ 44 public void onAckReceived(InetAddress myIpAddress, InetAddress myNetMask, 45 InetAddress myGateway, List<InetAddress> myDnsServers, 46 InetAddress myDhcpServer, int leaseTime); 47 48 /** 49 * Signals that a client's DISCOVER packet has been received with the 50 * specified parameters. 51 */ 52 public void onDiscoverReceived(boolean broadcast, int transactionId, 53 byte[] clientMac, byte[] requestedParameterList); 54 55 /** 56 * Signals that a client's REQUEST packet has been received with the 57 * specified parameters. 58 */ 59 public void onRequestReceived(boolean broadcast, int transactionId, 60 byte[] clientMac, InetAddress requestedIp, byte[] requestedParams, 61 String clientHostName); 62 63 /** 64 * Signals that a client's INFORM packet has been received with the 65 * specified parameters. 66 */ 67 public void onInformReceived(int transactionId, byte[] clientMac, 68 InetAddress preassignedIp, byte[] requestedParams); 69 70 /** 71 * Signals that a client's DECLINE packet has been received with the 72 * specified parameters. 73 */ 74 public void onDeclineReceived(byte[] clientMac, InetAddress declinedIp); 75} 76