Disabling Multicast to run multiple JavaSpace

timur mehrvarz <[email protected]>
Newsgroups gmane.comp.java.sun.javaspaces
Message-ID <[email protected]>
Hello,

we're trying to disable multicast traffic, so that we can run two (or
more) JavaSpaces in parallel in the same LAN.

Despite the fact that we have disabled multicast usage (zero length
array for multicastInterfaces), JINI discovers all configured
interfaces:

CONFIG: LookupDiscovery - multicast network interface(s): [name:qfe3
(qfe3) index: 4 addresses:
/10.215.203.68;
, name:qfe2 (qfe2) index: 3 addresses:
/10.215.203.66;
/10.215.203.67;
, name:hme0 (hme0) index: 2 addresses:
/10.215.52.192;
, name:lo0 (lo0) index: 1 addresses:
/127.0.0.1;
]

[.....]
Mar 22, 2005 11:23:16 AM com.sun.jini.reggie.RegistrarImpl init
CONFIG: multicast disabled
Mar 22, 2005 11:23:16 AM net.jini.config.AbstractConfiguration
getEntryInternal
FAILED: ConfigurationFile@120cc56{transient-reggie.config}, component
com.sun.jini.reggie, name multicastRequestSubjectChecker: entry not
found
[.....]

Obviously, multicast is disabled.

Nevertheless:

root@wherever#snoop -d qfe3 net 224.0.1.84 or net 224.0.1.85
Using device /dev/qfe (promiscuous mode)
  wherever-qfe3 -> JINI-ANNOUNCEMENT.MCAST.NET IP  D=224.0.1.84
S=10.215.203.68 LEN=28, ID=9325
           app1 -> JINI-ANNOUNCEMENT.MCAST.NET IP  D=224.0.1.84
S=10.215.203.66 LEN=28, ID=40772
           app1 -> JINI-ANNOUNCEMENT.MCAST.NET IP  D=224.0.1.84
S=10.215.203.66 LEN=28, ID=40773

Multicast announcements are being sent out.

Is there any way to totally disable the multicast traffic?

Cheers,
Timur


Startup: ===

#!/bin/sh
/apps/java/j2sdk/current/bin/java
-Djava.util.logging.config.file=reggie.log.properties
-Djava.security.policy=services.all.policy
-Djsk.lib=/apps/jini/jini2_0_002/lib -jar
/apps/jini/jini2_0_002/lib/start.jar t1.config

===

t1.config: ===
import com.sun.jini.start.NonActivatableServiceDescriptor;
import com.sun.jini.start.ServiceDescriptor;
import com.sun.jini.config.ConfigUtil;

com.sun.jini.start {
     private static reggieconf = "transient-reggie.config";

     // Discovery Group to use
     private static group = "${user.name}";

     private static httpdPort = "8090";
     private static codebaseBase = ConfigUtil.concat(new Object[] {
         "http://", ConfigUtil.getHostName(), ":", httpdPort, "/"});

     private static policy = "services.all.policy";
     private static classpathBase = ConfigUtil.concat(new Object[] {
          "${jsk.lib}","${/}"});

     static serviceDescriptors = new ServiceDescriptor[] {

         // httpd
         new NonActivatableServiceDescriptor(
             "",
             policy,
             ConfigUtil.concat(new Object[] {classpathBase,
"tools.jar"}),
             "com.sun.jini.tool.ClassServer",
             new String[]{"-port", httpdPort, "-dir", "${jsk.lib}",
"-verbose"}),
         // Reggie (lookup service)
         new NonActivatableServiceDescriptor(
             ConfigUtil.concat(new Object[] {codebaseBase,
"reggie-dl.jar"}),
             policy,
             ConfigUtil.concat(new Object[] {classpathBase,
"reggie.jar"}),
             "com.sun.jini.reggie.TransientRegistrarImpl",
             new String[] { reggieconf })
     };
}
===

transient-reggie.config: ===
import net.jini.jeri.BasicILFactory;
import net.jini.jeri.BasicJeriExporter;
import net.jini.jeri.tcp.TcpServerEndpoint;

com.sun.jini.reggie {

     multicastInterfaces = new java.net.NetworkInterface[]{};
     initialMemberGroups = new String[] { "cb-member-group" };
}
===

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