[Sis-ams] no handshaking when RAMS Gateway initially comes up
Scott Burleigh
Scott.Burleigh at jpl.nasa.gov
Wed Jul 23 16:46:53 EDT 2008
Donahue, Pat wrote:
> When a RAMS Gateway initially comes up, currently there is no type of
> handshaking in order to get it up to date with the pre-existing
> Subscriptions (petitions) for peer Gateways. Scott thinks this
> probably needs to be addressed in the Spec we are working on.
>
> By the way, when a Node comes up (the parallel), there is the
> I_AM_HERE / DECLARATION (Feb 2007 Spec terminology) handshaking to get
> the initializing Node up to date on Subscription requests from other
> Nodes.
Pat, I have finally had some time to think hard about this, and on
reviewing my old emails I discover that this initial handshaking
actually is in the current spec after all. Look at section 4.4.6.3:
when a gateway receives a petition for the pseudo-subject identifying
some continuum (as is the case when a new remote gateway starts up and
announces itself -- 4.4.2.1.4), it must send to that petitioning gateway
an assertion of each of its own petitions whose assertion set includes
that gateway. Non-obvious, I agree, but then very little about RAMS is
obvious.
Scott
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