IPP Mail Archive: RE: IPP> Does the world need a robust host-to-device network prin

IPP Mail Archive: RE: IPP> Does the world need a robust host-to-device network prin

RE: IPP> Does the world need a robust host-to-device network prin

Wagner, William (WWagner@wal.osicom.com)
Fri, 13 Feb 1998 15:53:25 -0500

Jay,

Thanks for the clarification. And I haven't missed your expressed
concerns, which is where I sensed somewhat negative vibes v-v IPP.

W. A. Wagner (Bill Wagner)
OSICOM/DPI

> -----Original Message-----
> From: Jay Martin [SMTP:jkm@underscore.com]
> Sent: Friday, February 13, 1998 3:43 PM
> To: Wagner, William
> Cc: ipp@pwg.org
> Subject: Re: IPP> Does the world need a robust host-to-device
> network prin ting protocol?
>
> Bill,
>
> > Jay seems to be just unhappy
> > with IPP, suggesting perhaps that it is not good for anything
> (because
> > to many compromises were made?)
>
> Aw now, c'mon. I have pointed out several specific concerns I
> have with IPP--in the role of a host-to-device protocol--on this
> DL. Perhaps you've missed them?
>
> I think a lot off pro-IPP folks are perhaps missing the point,
> at least with regard to my concerns, and probably Paul Moore's
> concerns.
>
> Paul has repeatedly pointed out the problem of asymmetry of
> IPP-over-HTTP in the context of host-to-device support. This
> is a big concern for me, also (both of us being "driver"
> developers that need a good "host-to-device" protocol).
>
> The lack of symmetry in the protocol makes life unnecessarily
> difficult to develop robust, highly functional drivers. For
> example, during the job submission transaction with the printer,
> the driver needs to be able to asynchronously receive events
> from the printer that may cause a change in the transaction,
> or at least cause the driver to "pass along" information to
> the originator in a timely and reasonable simple manner (eg,
> "Paper out", "PDL error", etc.)
>
> IPP as currently defined (over HTTP) does not provide this
> kind of protocol interaction...at least not very easily.
> Or more specifically, not as easy as it should be when
> compared to similar protocols in the Internet.
>
> Hopefully Paul Moore will comment a bit about this,
> but at least this describes one of my concerns about IPP.
> Please don't say "Jay doesn't think IPP is good for anything".
>
> ...jay
>
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