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1 /* |
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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3 * |
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4 * This code is free software; you can redistribute it and/or modify it |
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5 * under the terms of the GNU General Public License version 2 only, as |
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6 * published by the Free Software Foundation. Sun designates this |
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7 * particular file as subject to the "Classpath" exception as provided |
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8 * by Sun in the LICENSE file that accompanied this code. |
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9 * |
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10 * This code is distributed in the hope that it will be useful, but WITHOUT |
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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13 * version 2 for more details (a copy is included in the LICENSE file that |
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14 * accompanied this code). |
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15 * |
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16 * You should have received a copy of the GNU General Public License version |
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17 * 2 along with this work; if not, write to the Free Software Foundation, |
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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19 * |
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20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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21 * CA 95054 USA or visit www.sun.com if you need additional information or |
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22 * have any questions. |
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23 */ |
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24 |
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25 /* |
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26 * |
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27 * (C) Copyright IBM Corp. 1999 All Rights Reserved. |
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28 * Copyright 1997 The Open Group Research Institute. All rights reserved. |
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29 */ |
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30 |
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31 package sun.security.krb5.internal; |
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32 |
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33 import java.io.*; |
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34 import java.net.*; |
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35 |
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36 public class UDPClient { |
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37 InetAddress iaddr; |
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38 int iport; |
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39 int bufSize = 65507; |
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40 DatagramSocket dgSocket; |
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41 DatagramPacket dgPacketIn; |
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42 |
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43 public UDPClient(InetAddress newIAddr, int port) |
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44 throws SocketException { |
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45 iaddr = newIAddr; |
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46 iport = port; |
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47 dgSocket = new DatagramSocket(); |
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48 } |
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49 |
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50 public UDPClient(String hostname, int port) |
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51 throws UnknownHostException, SocketException { |
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52 iaddr = InetAddress.getByName(hostname); |
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53 iport = port; |
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54 dgSocket = new DatagramSocket(); |
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55 } |
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56 |
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57 public UDPClient(String hostname, int port, int timeout) |
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58 throws UnknownHostException, SocketException { |
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59 iaddr = InetAddress.getByName(hostname); |
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60 iport = port; |
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61 dgSocket = new DatagramSocket(); |
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62 dgSocket.setSoTimeout(timeout); |
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63 } |
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64 |
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65 public void setBufSize(int newBufSize) { |
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66 bufSize = newBufSize; |
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67 } |
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68 |
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69 public InetAddress getInetAddress() { |
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70 if (dgPacketIn != null) |
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71 return dgPacketIn.getAddress(); |
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72 return null; |
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73 } |
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74 |
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75 public void send(byte[] data) throws IOException { |
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76 DatagramPacket dgPacketOut = new DatagramPacket(data, data.length, |
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77 iaddr, iport); |
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78 dgSocket.send(dgPacketOut); |
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79 } |
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80 |
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81 public byte[] receive() throws IOException { |
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82 byte ibuf[] = new byte[bufSize]; |
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83 dgPacketIn = new DatagramPacket(ibuf, ibuf.length); |
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84 try { |
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85 dgSocket.receive(dgPacketIn); |
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86 } |
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87 catch (SocketException e) { |
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88 dgSocket.receive(dgPacketIn); |
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89 } |
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90 byte[] data = new byte[dgPacketIn.getLength()]; |
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91 System.arraycopy(dgPacketIn.getData(), 0, data, 0, |
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92 dgPacketIn.getLength()); |
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93 return data; |
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94 } |
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95 |
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96 } |