IPP> Duplicate ippget events

IPP> Duplicate ippget events

Michael Sweet mike at easysw.com
Fri Jul 27 15:43:56 EDT 2001


Marty Joel wrote:
> 
> Hi Michael,
> 
> I agree with everything you've said.
> 
> Actually, notify-sequence-number is what should be used by the client to
> ignore duplicates.  For each subscription that matches its
> Get-Notifications (usually only 1 subscription), it needs to know that
> subscription ID and the last notify-sequence-number it received.  That
> requires very little work on the part of the client.
> ...

Hmmm, from an implementation standpoint, it would be better if the
client could send the last sequence number is has received to the
server, so the server would only have to send events whose sequence
number is > the one provided.  E.g., a client sends a server the
"notify-sequence-number" attribute in the Get-Notifications request,
and the server responds only with those events that have a higher
sequence number.  This would also reduce the bandwidth used...

Thoughts?

-- 
______________________________________________________________________
Michael Sweet, Easy Software Products                  mike at easysw.com
Printing Software for UNIX                       http://www.easysw.com



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