8014499: MulticastSocket should enable IP_MULTICAST_ALL (lnx)
Reviewed-by: alanb, chegar
Contributed-by: John Zavgren <john.zavgren@oracle.com>, Chris Hegarty <chris.hegarty@oracle.com>
--- a/jdk/src/solaris/native/java/net/PlainDatagramSocketImpl.c Thu Jun 20 08:21:08 2013 -0700
+++ b/jdk/src/solaris/native/java/net/PlainDatagramSocketImpl.c Thu Jun 20 18:53:57 2013 +0100
@@ -43,7 +43,14 @@
#ifndef SO_BSDCOMPAT
#define SO_BSDCOMPAT 14
#endif
+/**
+ * IP_MULTICAST_ALL has been supported since kernel version 2.6.31
+ * but we may be building on a machine that is older than that.
+ */
+#ifndef IP_MULTICAST_ALL
+#define IP_MULTICAST_ALL 49
#endif
+#endif // __linux__`
#ifndef IPTOS_TOS_MASK
#define IPTOS_TOS_MASK 0x1e
@@ -980,6 +987,18 @@
setsockopt(fd, SOL_SOCKET, SO_BROADCAST, (char*) &t, sizeof(int));
+#if defined(__linux__)
+ arg = 0;
+ int level = (domain == AF_INET6) ? IPPROTO_IPV6 : IPPROTO_IP;
+ if ((setsockopt(fd, level, IP_MULTICAST_ALL, (char*)&arg, sizeof(arg)) < 0) &&
+ (errno != ENOPROTOOPT)) {
+ JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
+ strerror(errno));
+ close(fd);
+ return;
+ }
+#endif
+
#if defined (__linux__) && defined (AF_INET6)
/*
* On Linux for IPv6 sockets we must set the hop limit
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/net/MulticastSocket/Promiscuous.java Thu Jun 20 18:53:57 2013 +0100
@@ -0,0 +1,137 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+
+/* @test
+ * @bug 8014499
+ * @summary Test for interference when two sockets are bound to the same
+ * port but joined to different multicast groups
+ * @run main Promiscuous
+ * @run main/othervm -Djava.net.preferIPv4Stack=true Promiscuous
+ */
+
+import java.io.IOException;
+import static java.lang.System.out;
+import java.net.*;
+
+public class Promiscuous {
+
+ static final int TIMEOUT = 5 * 1000; // 5 secs
+ static int id = 1000;
+
+ static void receive(MulticastSocket mc, boolean datagramExpected, int id)
+ throws IOException
+ {
+ byte[] ba = new byte[100];
+ DatagramPacket p = new DatagramPacket(ba, ba.length);
+ try {
+ mc.receive(p);
+ int recvId = Integer.parseInt(
+ new String(p.getData(), 0, p.getLength(), "UTF-8"));
+ if (datagramExpected) {
+ if (recvId != id)
+ throw new RuntimeException("Unexpected id, got " + recvId
+ + ", expected: " + id);
+ out.printf("Received message as expected, %s\n", p.getAddress());
+ } else {
+ throw new RuntimeException("Unexpected message received, "
+ + p.getAddress());
+ }
+ } catch (SocketTimeoutException e) {
+ if (datagramExpected)
+ throw new RuntimeException("Expected message not received, "
+ + e.getMessage());
+ else
+ out.printf("Message not received, as expected\n");
+ }
+ }
+
+ static void test(InetAddress group1, InetAddress group2)
+ throws IOException
+ {
+ try (MulticastSocket mc1 = new MulticastSocket();
+ MulticastSocket mc2 = new MulticastSocket(mc1.getLocalPort());
+ DatagramSocket ds = new DatagramSocket()) {
+ final int port = mc1.getLocalPort();
+ out.printf("Using port: %d\n", port);
+
+ mc1.setSoTimeout(TIMEOUT);
+ mc2.setSoTimeout(TIMEOUT);
+ int nextId = id;
+ byte[] msg = Integer.toString(nextId).getBytes("UTF-8");
+ DatagramPacket p = new DatagramPacket(msg, msg.length);
+ p.setAddress(group1);
+ p.setPort(port);
+
+ mc1.joinGroup(group1);
+ out.printf("mc1 joined the MC group: %s\n", group1);
+ mc2.joinGroup(group2);
+ out.printf("mc2 joined the MC group: %s\n", group2);
+
+ out.printf("Sending datagram to: %s/%d\n", group1, port);
+ ds.send(p);
+
+ // the packet should be received by mc1 only
+ receive(mc1, true, nextId);
+ receive(mc2, false, 0);
+
+ nextId = ++id;
+ msg = Integer.toString(nextId).getBytes("UTF-8");
+ p = new DatagramPacket(msg, msg.length);
+ p.setAddress(group2);
+ p.setPort(port);
+
+ out.printf("Sending datagram to: %s/%d\n", group2, port);
+ ds.send(p);
+
+ // the packet should be received by mc2 only
+ receive(mc2, true, nextId);
+ receive(mc1, false, 0);
+
+ mc1.leaveGroup(group1);
+ mc2.leaveGroup(group2);
+ }
+ }
+
+ public static void main(String args[]) throws IOException {
+ String os = System.getProperty("os.name");
+
+ // Requires IP_MULTICAST_ALL on Linux (new since 2.6.31) so skip
+ // on older kernels. Note that we skip on <= version 3 to keep the
+ // parsing simple
+ if (os.equals("Linux")) {
+ String osversion = System.getProperty("os.version");
+ String[] vers = osversion.split("\\.", 0);
+ int major = Integer.parseInt(vers[0]);
+ if (major < 3) {
+ System.out.format("Kernel version is %s, test skipped%n", osversion);
+ return;
+ }
+ }
+
+ // multicast groups used for the test
+ InetAddress ip4Group1 = InetAddress.getByName("224.7.8.9");
+ InetAddress ip4Group2 = InetAddress.getByName("225.4.5.6");
+
+ test(ip4Group1, ip4Group2);
+ }
+}