Re: LookupDiscovery MulticastTimeToLive

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> Date: Tue, 13 Feb 2007 17:27:59 -0500
> From: [email protected]
> Subject: Re: LookupDiscovery MulticastTimeToLive
> To: [email protected]
> 
> > I really should find out for myself
> 
> Indeed, it's in the LookupDiscovery javadoc.
> 
> > but how do I set the MulticastTimeToLive for LookupDiscovery? I suppose
> > I'm supposed to write something like discoveryConstraints = ???
> 
> import net.jini.constraint.BasicMethodConstraints;
> import net.jini.constraint.BasicMethodConstraints.MethodDesc;
> import net.jini.core.constraint.InvocationConstraints;
> import net.jini.core.constraint.InvocationConstraint;
> import com.sun.discovery.MulticastTimeToLive;
> 
> net.jini.discovery.LookupDiscovery {
> 
> discoveryConstraints =
>      new BasicMethodConstraints(
>         new MethodDesc[]{
>             new MethodDesc(
>                 "multicastRequest",
>                 new InvocationConstraints(
>                     new InvocationConstraint[]{
>                         new MulticastTimeToLive()},
>                     null)),
>             new MethodDesc(
>                 "multicastAnnouncement",
>                 new InvocationConstraints(
>                     new InvocationConstraint[]{
>                         new MulticastTimeToLive()},
>                     null))});
> 
> }
> 
> 
> > Also, is the default value 225 or did I dream that?
> 
> It's 15 (per recommendation in the D&J spec).
> 
> > Could someone point
> > me in the right direction for understanding what this means more
> > practically (if remotely correct)
> 
> It's essentially how many router hops you want it to traverse.
> 
> - Bob
> 
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