8014499: MulticastSocket should enable IP_MULTICAST_ALL (lnx)

Reviewed-by: alanb, chegar
Contributed-by: NJohn Zavgren &lt;john.zavgren@oracle.com&gt;, Chris Hegarty <chris.hegarty@oracle.com>

src/solaris/native/java/net/PlainDatagramSocketImpl.c

@@ -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 @@ Java_java_net_PlainDatagramSocketImpl_datagramSocketCreate(JNIEnv *env,
 
      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

test/java/net/MulticastSocket/Promiscuous.java

+/*
+ * 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);
+    }
+}