[Council] JEP-0023 redux

Peter Saint-Andre stpeter at jabber.org
Wed May 8 12:44:39 CDT 2002

I will make the appropriate changes to this JEP in order to address these
concerns (e.g., by adding open issues). I'll do the same for JEP-0022 as


Peter Saint-Andre
email+jabber: stpeter at jabber.org
weblog: http://www.saint-andre.com/blog/

On Tue, 7 May 2002, David Waite wrote:

> Peter Saint-Andre wrote:
> >David Waite wrote:
> >
> >******
> >
> >-1, I would like to see it explicitly stated that the TTL is only valid 
> >within a hop (e.g. TTL is not the total time to live for routing that 
> >goes between servers), and is only processed for delayed messages, such 
> >as offline messages.
> >
> >******
> >
> >If I understand this paragraph correctly, you have two objections:
> >
> >1. The TTL does not represent the total time to live for routing of a
> >chunk from the sender to the intended recipient, since multiple hops could
> >be required. However, this would seem to require that each hop add its own
> >TTL attribute in order to implement the functionality laid out in this
> >JEP.
> >
> Yes, it has two problems:
> 1) it is only processed by servers and subsystems which support this 
> particular informational draft, so they will not properly handle the TTL
> 2) a physical time based TTL is not implemented by this JEP, and would 
> not be possible on systems without synchronized time.
> Since it is informational, these don't need to be fixed, but I would 
> really like to see them documented as issues.
> >2. Are you saying that the TTL *should* be processed only for delayed
> >messages, that it *must* be processed only for delayed messages, or
> >that right now it *is* processed only for delayed messages (i.e., in
> >existing implementations)?
> >
> 'Must' is only enforcable for things which support this informational 
> draft, so it doesn't buy much. I'm saying that it currently is only 
> processed for delayed messages on existing implementations, which is 
> what this JEP documents.
> -David Waite
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