How does placing a URI denoting the target of an IPP request inside our protocol (as an IPP attribute) facilitate this kind of demux?
> 
> 	-----Original Message-----
> 	From:	Carl Kugler [SMTP:kugler@us.ibm.com]
> 	Sent:	Wednesday, June 03, 1998 11:21 AM
> 	To:	ipp@pwg.org
> 	Subject:	Re: IPP> Identifying jobs in requests
> 
> 	> 
> 	> The demultiplexing front-end is not IPP, and is therefore some
> type of
> 	> "transport-helper". While the IPP protocol document must stand
> on its own,
> 	> independent of any such transport, and therefore identifiers
> within the
> 	> protocol would still be mandatory ( Of course, my argument is
> entirely
> 	> based upon the WG's decision that IPP must be transport
> independent ).
> 	> 
> 	> Randy
> 	> 
> 
> 	Randy-
> 
> 	If the demultiplexing front-end is not IPP, how is it able to
> read IPP attributes?
> 
> 	- Carl
> 	> 
> 	> ----------
> 	> > From: Jay Martin <jkm@underscore.com>
> 	> > To: Randy Turner <rturner@sharplabs.com>
> 	> > Cc: ipp@pwg.org
> 	> > Subject: Re: IPP> Identifying jobs in requests
> 	> > Date: Wednesday, June 03, 1998 9:32 AM
> 	> > 
> 	> > Randy Turner wrote:
> 	> > > 
> 	> > > We use URIs to identify IPP objects. If we want IPP to
> maintain
> 	> > > transport-independence, then we will always need to have
> some type of
> 	> valid
> 	> > > URI denoting the target of an IPP request inside our
> protocol.
> 	> > 
> 	> > Not necessarily.  Sure, in the case of a demultiplexing
> front-end,
> 	> > it would be necessary to have the target embedded in the
> protocol
> 	> > message, but not necessary for single-Printer
> implementations.
> 	> > 
> 	> > I don't have a problem with embedding the target URI in the
> PDU,
> 	> > but if we get into a big mess with regard to reconciling a
> similar
> 	> > target in the outer/lower transport level (eg, HTTP), then
> we might
> 	> > want to consider pulling out the embedded target URI.
> 	> > 
> 	> > It would be nice to hear from others on this topic.
> 	> > 
> 	> > 	...jay
> 	> > 
> 	> >
> ----------------------------------------------------------------------
> 	> > --  JK Martin               |  Email:   jkm@underscore.com
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> 	> 
> 
>