MulticastSendReceiveTests.java revision 6073:cea72c2bf071
1199714Srnoland/* 2199714Srnoland * Copyright (c) 2007, 2012, Oracle and/or its affiliates. All rights reserved. 3199714Srnoland * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4199714Srnoland * 5199714Srnoland * This code is free software; you can redistribute it and/or modify it 6212066Sdelphij * under the terms of the GNU General Public License version 2 only, as 7199714Srnoland * published by the Free Software Foundation. 8199714Srnoland * 9276486Sngie * This code is distributed in the hope that it will be useful, but WITHOUT 10199714Srnoland * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11199714Srnoland * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12199714Srnoland * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/* @test 25 * @bug 4527345 7026376 6633549 26 * @summary Unit test for DatagramChannel's multicast support 27 * @build MulticastSendReceiveTests NetworkConfiguration 28 * @run main MulticastSendReceiveTests 29 * @run main/othervm -Djava.net.preferIPv4Stack=true MulticastSendReceiveTests 30 */ 31 32import java.nio.ByteBuffer; 33import java.nio.channels.*; 34import java.net.*; 35import static java.net.StandardProtocolFamily.*; 36import java.util.*; 37import java.io.IOException; 38 39public class MulticastSendReceiveTests { 40 41 static final Random rand = new Random(); 42 43 static final ProtocolFamily UNSPEC = new ProtocolFamily() { 44 public String name() { 45 return "UNSPEC"; 46 } 47 }; 48 49 /** 50 * Send datagram from given local address to given multicast 51 * group. 52 */ 53 static int sendDatagram(InetAddress local, 54 NetworkInterface nif, 55 InetAddress group, 56 int port) 57 throws IOException 58 { 59 ProtocolFamily family = (group instanceof Inet6Address) ? 60 StandardProtocolFamily.INET6 : StandardProtocolFamily.INET; 61 DatagramChannel dc = DatagramChannel.open(family) 62 .bind(new InetSocketAddress(local, 0)) 63 .setOption(StandardSocketOptions.IP_MULTICAST_IF, nif); 64 int id = rand.nextInt(); 65 byte[] msg = Integer.toString(id).getBytes("UTF-8"); 66 ByteBuffer buf = ByteBuffer.wrap(msg); 67 System.out.format("Send message from %s -> group %s (id=0x%x)\n", 68 local.getHostAddress(), group.getHostAddress(), id); 69 dc.send(buf, new InetSocketAddress(group, port)); 70 dc.close(); 71 return id; 72 } 73 74 /** 75 * Wait (with timeout) for datagram. 76 * 77 * @param expectedSender - expected sender address, or 78 * null if no datagram expected 79 * @param id - expected id of datagram 80 */ 81 static void receiveDatagram(DatagramChannel dc, 82 InetAddress expectedSender, 83 int id) 84 throws IOException 85 { 86 Selector sel = Selector.open(); 87 dc.configureBlocking(false); 88 dc.register(sel, SelectionKey.OP_READ); 89 ByteBuffer buf = ByteBuffer.allocateDirect(100); 90 91 try { 92 for (;;) { 93 System.out.println("Waiting to receive message"); 94 sel.select(5*1000); 95 SocketAddress sa = dc.receive(buf); 96 97 // no datagram received 98 if (sa == null) { 99 if (expectedSender != null) { 100 throw new RuntimeException("Expected message not recieved"); 101 } 102 System.out.println("No message received (correct)"); 103 return; 104 } 105 106 // datagram received 107 108 InetAddress sender = ((InetSocketAddress)sa).getAddress(); 109 buf.flip(); 110 byte[] bytes = new byte[buf.remaining()]; 111 buf.get(bytes); 112 int receivedId = Integer.parseInt(new String(bytes)); 113 114 System.out.format("Received message from %s (id=0x%x)\n", 115 sender, receivedId); 116 117 if (expectedSender == null) { 118 if (receivedId == id) 119 throw new RuntimeException("Message not expected"); 120 System.out.println("Message ignored (has wrong id)"); 121 } else { 122 if (sender.equals(expectedSender)) { 123 System.out.println("Message expected"); 124 return; 125 } 126 System.out.println("Message ignored (wrong sender)"); 127 } 128 129 sel.selectedKeys().clear(); 130 buf.rewind(); 131 } 132 } finally { 133 sel.close(); 134 } 135 } 136 137 138 /** 139 * Exercise multicast send/receive on given group/interface 140 */ 141 static void test(ProtocolFamily family, 142 NetworkInterface nif, 143 InetAddress group, 144 InetAddress source) 145 throws IOException 146 { 147 System.out.format("\nTest DatagramChannel to %s socket\n", family.name()); 148 try (DatagramChannel dc = (family == UNSPEC) ? 149 DatagramChannel.open() : DatagramChannel.open(family)) { 150 dc.setOption(StandardSocketOptions.SO_REUSEADDR, true) 151 .bind(new InetSocketAddress(0)); 152 153 // join group 154 System.out.format("join %s @ %s\n", group.getHostAddress(), 155 nif.getName()); 156 MembershipKey key; 157 try { 158 key = dc.join(group, nif); 159 } catch (IllegalArgumentException iae) { 160 if (family == UNSPEC) { 161 System.out.println("Not supported"); 162 return; 163 } 164 throw iae; 165 } 166 167 // send message to group 168 int port = ((InetSocketAddress)dc.getLocalAddress()).getPort(); 169 int id = sendDatagram(source, nif, group, port); 170 171 // receive message and check id matches 172 receiveDatagram(dc, source, id); 173 174 // exclude-mode filtering 175 176 try { 177 System.out.format("block %s\n", source.getHostAddress()); 178 179 // may throw UOE 180 key.block(source); 181 id = sendDatagram(source, nif, group, port); 182 receiveDatagram(dc, null, id); 183 184 // unblock source, send message, message should be received 185 System.out.format("unblock %s\n", source.getHostAddress()); 186 key.unblock(source); 187 id = sendDatagram(source, nif, group, port); 188 receiveDatagram(dc, source, id); 189 } catch (UnsupportedOperationException x) { 190 String os = System.getProperty("os.name"); 191 // Exclude-mode filtering supported on these platforms so UOE should never be thrown 192 if (os.equals("SunOS") || os.equals("Linux")) 193 throw x; 194 System.out.println("Exclude-mode filtering not supported!"); 195 } 196 197 key.drop(); 198 199 // include-mode filtering 200 201 InetAddress bogus = (group instanceof Inet6Address) ? 202 InetAddress.getByName("fe80::1234") : 203 InetAddress.getByName("1.2.3.4"); 204 System.out.format("join %s @ %s only-source %s\n", group.getHostAddress(), 205 nif.getName(), bogus.getHostAddress()); 206 try { 207 // may throw UOE 208 key = dc.join(group, nif, bogus); 209 210 id = sendDatagram(source, nif, group, port); 211 receiveDatagram(dc, null, id); 212 213 System.out.format("join %s @ %s only-source %s\n", group.getHostAddress(), 214 nif.getName(), source.getHostAddress()); 215 key = dc.join(group, nif, source); 216 217 id = sendDatagram(source, nif, group, port); 218 receiveDatagram(dc, source, id); 219 } catch (UnsupportedOperationException x) { 220 String os = System.getProperty("os.name"); 221 // Include-mode filtering supported on these platforms so UOE should never be thrown 222 if (os.equals("SunOS") || os.equals("Linux")) 223 throw x; 224 System.out.println("Include-mode filtering not supported!"); 225 } 226 } 227 } 228 229 public static void main(String[] args) throws IOException { 230 NetworkConfiguration config = NetworkConfiguration.probe(); 231 232 // multicast groups used for the test 233 InetAddress ip4Group = InetAddress.getByName("225.4.5.6"); 234 InetAddress ip6Group = InetAddress.getByName("ff02::a"); 235 236 for (NetworkInterface nif: config.ip4Interfaces()) { 237 InetAddress source = config.ip4Addresses(nif).iterator().next(); 238 test(INET, nif, ip4Group, source); 239 test(UNSPEC, nif, ip4Group, source); 240 } 241 242 for (NetworkInterface nif: config.ip6Interfaces()) { 243 InetAddress source = config.ip6Addresses(nif).iterator().next(); 244 test(INET6, nif, ip6Group, source); 245 test(UNSPEC, nif, ip6Group, source); 246 } 247 } 248} 249