Re: Disabling Multicast to run multiple JavaSpace

Hi Timur,

What makes you think that you need to disable multicast so you can have two or more JavaSpaces ?

Although you maybe having a problem disabling multicast, you might be doing it for the wrong reason.

Jini is designed to allow you to have as many, or few services (JavaSpaces are just services) as you like.

Perhaps you could give us a little more insight ?

--Jools


> 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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===========================================================================
To unsubscribe, send email to [email protected] and include in the body
of the message "signoff JAVASPACES-USERS".  For general help, send email to
[email protected] and include in the body of the message "help".

To view past JAVASPACES-USERS postings, please see:
http://archives.java.sun.com/archives/javaspaces-users.html

JDC members can download the JavaSpaces(tm) Technology from:
http://developer.java.sun.com/developer/products/jini/