J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | * accompanied this code). |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License version |
| 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | * |
| 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* |
| 25 | * |
| 26 | * |
| 27 | * Used in conjunction to EchoService to test System.inheritedChannel(). |
| 28 | * |
| 29 | * The first test is the TCP echo test. A service is launched with a TCP |
| 30 | * socket and a TCP message is sent to the service. The test checks that |
| 31 | * the message is correctly echoed. |
| 32 | * |
| 33 | * The second test is a UDP echo test. A service is launched with a UDP |
| 34 | * socket and a UDP packet is sent to the service. The test checks that |
| 35 | * the packet is correctly echoed. |
| 36 | * |
| 37 | */ |
| 38 | import java.net.*; |
| 39 | import java.io.*; |
| 40 | import java.nio.ByteBuffer; |
| 41 | import java.nio.channels.*; |
| 42 | import java.util.Random; |
| 43 | |
| 44 | public class EchoTest { |
| 45 | |
| 46 | private static int failures = 0; |
| 47 | |
| 48 | private static String ECHO_SERVICE = "EchoService"; |
| 49 | |
| 50 | /* |
| 51 | * Sends a message with random bytes to the service, and then waits for |
| 52 | * a reply (with timeout). Once the reply is received it is checked to ensure |
| 53 | * that it matches the original message. |
| 54 | */ |
| 55 | private static void TCPEchoTest() throws IOException { |
| 56 | SocketChannel sc = Launcher.launchWithSocketChannel(ECHO_SERVICE, null); |
| 57 | |
| 58 | String msg = "Where's that damn torpedo?"; |
| 59 | int repeat = 100; |
| 60 | int size = msg.length() * repeat; |
| 61 | |
| 62 | // generate bytes into a buffer and send it to the service |
| 63 | |
| 64 | ByteBuffer bb1 = ByteBuffer.allocate(size); |
| 65 | Random gen = new Random(); |
| 66 | for (int i=0; i<repeat; i++) { |
| 67 | bb1.put(msg.getBytes("UTF-8")); |
| 68 | } |
| 69 | bb1.flip(); |
| 70 | sc.write(bb1); |
| 71 | |
| 72 | // now we put the channel into non-blocking mode and we read the |
| 73 | // reply from the service into a second buffer. |
| 74 | |
| 75 | ByteBuffer bb2 = ByteBuffer.allocate(size+100); |
| 76 | sc.configureBlocking(false); |
| 77 | Selector sel = sc.provider().openSelector(); |
| 78 | SelectionKey sk = sc.register(sel, SelectionKey.OP_READ); |
| 79 | int nread = 0; |
| 80 | long to = 5000; |
| 81 | while (nread < size) { |
| 82 | long st = System.currentTimeMillis(); |
| 83 | sel.select(to); |
| 84 | if (sk.isReadable()) { |
| 85 | int n = sc.read(bb2); |
| 86 | if (n > 0) { |
| 87 | nread += n; |
| 88 | } |
| 89 | if (n < 0) { |
| 90 | break; // EOF |
| 91 | } |
| 92 | } |
| 93 | sel.selectedKeys().remove(sk); |
| 94 | to -= System.currentTimeMillis() - st; |
| 95 | if (to <= 0) { |
| 96 | break; |
| 97 | } |
| 98 | } |
| 99 | sc.close(); |
| 100 | |
| 101 | // and compare the response |
| 102 | |
| 103 | boolean err = false; |
| 104 | |
| 105 | if (nread != size) { |
| 106 | err = true; |
| 107 | } else { |
| 108 | bb1.flip(); |
| 109 | bb2.flip(); |
| 110 | while (bb1.hasRemaining()) { |
| 111 | if (bb1.get() != bb2.get()) { |
| 112 | err = true; |
| 113 | } |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | // if error print out the response from the service (could be a stack trace) |
| 118 | if (err) { |
| 119 | System.err.println("Bad response or premature EOF, bytes read: "); |
| 120 | bb2.flip(); |
| 121 | while (bb2.hasRemaining()) { |
| 122 | char c = (char)bb2.get(); |
| 123 | System.out.print(c); |
| 124 | } |
| 125 | throw new RuntimeException("Bad response or premature EOF from service"); |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | /* |
| 130 | * Send a UDP packet to the service, wait for a reply (with timeout). Finally |
| 131 | * check that the packet is the same length as the original. |
| 132 | */ |
| 133 | private static void UDPEchoTest() throws IOException { |
| 134 | DatagramChannel dc = Launcher.launchWithDatagramChannel(ECHO_SERVICE, null); |
| 135 | |
| 136 | String msg = "I was out saving the galaxy when your grandfather was in diapers"; |
| 137 | |
| 138 | ByteBuffer bb = ByteBuffer.wrap(msg.getBytes("UTF-8")); |
| 139 | dc.write(bb); |
| 140 | |
| 141 | // and receive the echo |
| 142 | byte b[] = new byte[msg.length() + 100]; |
| 143 | DatagramPacket pkt2 = new DatagramPacket(b, b.length); |
| 144 | dc.socket().setSoTimeout(2000); |
| 145 | dc.socket().receive(pkt2); |
| 146 | |
| 147 | if (pkt2.getLength() != msg.length()) { |
| 148 | throw new RuntimeException("Received packet of incorrect length"); |
| 149 | } |
| 150 | |
| 151 | dc.close(); |
| 152 | } |
| 153 | |
| 154 | public static void main(String args[]) throws IOException { |
| 155 | |
| 156 | // TCP echo |
| 157 | try { |
| 158 | TCPEchoTest(); |
| 159 | System.out.println("TCP echo test passed."); |
| 160 | } catch (Exception x) { |
| 161 | System.err.println(x); |
| 162 | failures++; |
| 163 | } |
| 164 | |
| 165 | // UDP echo |
| 166 | try { |
| 167 | UDPEchoTest(); |
| 168 | System.out.println("UDP echo test passed."); |
| 169 | } catch (Exception x) { |
| 170 | x.printStackTrace(); |
| 171 | System.err.println(x); |
| 172 | failures++; |
| 173 | } |
| 174 | |
| 175 | if (failures > 0) { |
| 176 | throw new RuntimeException("Test failed - see log for details"); |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | } |