author | chegar |
Thu, 17 Oct 2019 20:54:25 +0100 | |
branch | datagramsocketimpl-branch |
changeset 58679 | 9c3209ff7550 |
parent 58678 | 9cf78a70fa4f |
parent 55475 | 6ca3526c4e25 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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|
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/* @test |
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* @bug 8014499 8219804 |
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* @library /test/lib |
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* @summary Test for interference when two sockets are bound to the same |
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* port but joined to different multicast groups |
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* @run main Promiscuous |
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* @run main/othervm -Djava.net.preferIPv4Stack=true Promiscuous |
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*/ |
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|
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import java.io.IOException; |
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import static java.lang.System.out; |
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import java.net.*; |
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import jdk.test.lib.net.IPSupport; |
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|
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public class Promiscuous { |
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|
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static final int TIMEOUT = 5 * 1000; // 5 secs |
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static int id = 1000; |
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|
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static void receive(MulticastSocket mc, boolean datagramExpected, int id) |
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throws IOException |
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{ |
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byte[] ba = new byte[100]; |
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DatagramPacket p; |
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try { |
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String data = null; |
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while (true) { |
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p = new DatagramPacket(ba, ba.length); |
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mc.receive(p); |
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data = new String(p.getData(), 0, p.getLength(), "UTF-8"); |
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if (data.length() > UUID.length() && data.startsWith(UUID)) { |
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data = data.substring(UUID.length()); |
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break; |
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} |
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logUnexpected(p); |
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} |
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int recvId = Integer.parseInt(data); |
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if (datagramExpected) { |
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if (recvId != id) |
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throw new RuntimeException("Unexpected id, got " + recvId |
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+ ", expected: " + id); |
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out.printf("Received message as expected, %s\n", p.getAddress()); |
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} else { |
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throw new RuntimeException("Unexpected message received, " |
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+ p.getAddress()); |
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} |
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} catch (SocketTimeoutException e) { |
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if (datagramExpected) |
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throw new RuntimeException("Expected message not received, " |
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+ e.getMessage()); |
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else |
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out.printf("Message not received, as expected\n"); |
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} |
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} |
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static void logUnexpected(DatagramPacket p) { |
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byte[] ba = p.getData(); |
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System.out.printf("Unexpected packet: length: %d. First three bytes: %d, %d, %d\n", |
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p.getLength(), ba[0], ba[1], ba[2]); |
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} |
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static final String UUID; // process-id : currentTimeMillis |
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static { |
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String s1 = Long.toString(ProcessHandle.current().pid()); |
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String s2 = Long.toString(System.currentTimeMillis()); |
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UUID = "<" + s1 + s2 + ">"; |
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} |
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static void test(InetAddress group1, InetAddress group2) |
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throws IOException |
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{ |
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try (MulticastSocket mc1 = new MulticastSocket(); |
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MulticastSocket mc2 = new MulticastSocket(mc1.getLocalPort()); |
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DatagramSocket ds = new DatagramSocket()) { |
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final int port = mc1.getLocalPort(); |
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out.printf("Using port: %d\n", port); |
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|
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mc1.setSoTimeout(TIMEOUT); |
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mc2.setSoTimeout(TIMEOUT); |
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int nextId = id; |
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byte[] msg = (UUID + Integer.toString(nextId)).getBytes("UTF-8"); |
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DatagramPacket p = new DatagramPacket(msg, msg.length); |
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p.setAddress(group1); |
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p.setPort(port); |
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mc1.joinGroup(group1); |
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out.printf("mc1 joined the MC group: %s\n", group1); |
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mc2.joinGroup(group2); |
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out.printf("mc2 joined the MC group: %s\n", group2); |
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|
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out.printf("Sending datagram to: %s/%d\n", group1, port); |
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ds.send(p); |
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|
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// the packet should be received by mc1 only |
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receive(mc1, true, nextId); |
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receive(mc2, false, 0); |
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|
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nextId = ++id; |
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msg = (UUID + Integer.toString(nextId)).getBytes("UTF-8"); |
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p = new DatagramPacket(msg, msg.length); |
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p.setAddress(group2); |
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p.setPort(port); |
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|
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out.printf("Sending datagram to: %s/%d\n", group2, port); |
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ds.send(p); |
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|
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// the packet should be received by mc2 only |
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receive(mc2, true, nextId); |
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receive(mc1, false, 0); |
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|
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mc1.leaveGroup(group1); |
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mc2.leaveGroup(group2); |
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} |
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} |
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139 |
|
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public static void main(String args[]) throws IOException { |
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IPSupport.throwSkippedExceptionIfNonOperational(); |
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String os = System.getProperty("os.name"); |
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143 |
|
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// Requires IP_MULTICAST_ALL on Linux (new since 2.6.31) so skip |
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// on older kernels. Note that we skip on <= version 3 to keep the |
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// parsing simple |
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if (os.equals("Linux")) { |
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String osversion = System.getProperty("os.version"); |
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String[] vers = osversion.split("\\.", 0); |
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int major = Integer.parseInt(vers[0]); |
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if (major < 3) { |
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System.out.format("Kernel version is %s, test skipped%n", osversion); |
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return; |
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154 |
} |
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} |
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|
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// multicast groups used for the test |
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InetAddress ip4Group1 = InetAddress.getByName("224.0.0.120"); |
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InetAddress ip4Group2 = InetAddress.getByName("224.0.0.121"); |
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|
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test(ip4Group1, ip4Group2); |
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} |
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} |