IPP Mail Archive: RE: IPP> Identifying jobs in requests

RE: IPP> Identifying jobs in requests

Turner, Randy (rturner@sharplabs.com)
Wed, 3 Jun 1998 11:50:42 -0700

I think Jay was talking about a lower-layer demux than what you are
talking about. The kind of demux that might be performed by a
CGI/NSAPI/ISAPI layer, or equivalent...prior to passing the data to a
core IPP processing component.

Randy

-----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

--
	> > --  Underscore, Inc.        |  Voice:   (603) 889-7000

--
	> > --  41C Sagamore Park Road  |  Fax:     (603) 889-2699

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	> 
	>