IPP Mail Archive: RE: IPP> Implications of a new scheme, etc

IPP Mail Archive: RE: IPP> Implications of a new scheme, etc

RE: IPP> Implications of a new scheme, etc

Roger K Debry (rdebry@us.ibm.com)
Mon, 8 Jun 1998 08:34:28 -0400

Josh,

I will make the impact statement for IPP on the wire stronger, as
you suggest. I think Carl Kugler has pointed out that the HTTP
on the wire column is just Larry Masinter's proposal, which I
hope you will agree causes no impact to proxies. Since this
column does imply a new port number, isn't this enough to
distinguish this for firewall purposes?

Roger K deBry
Senior Technical Staff Member
Architecture and Technology
IBM Printing Systems
email: rdebry@us.ibm.com
phone: 1-303-924-4080

joshco@microsoft.com on 06/05/98 05:04:37 PM
Please respond to joshco@microsoft.com
To: ipp@pwg.org, Roger K Debry/Boulder/IBM@ibmus
cc:
Subject: RE: IPP> Implications of a new scheme, etc

Hi Roger,

I've got some comments on this. (I dont imagine your surprised :)

For the IPP: (new scheme proposals)
I think putting 'no impact' for proxies is 100% inaccurate.
a new IPP scheme will break *every* existing Proxy. I challenge
the wg to find a proxy which will pass this exception, if one exists.

In the case of the new method, most current proxies will be
able to handle it with minimal effort, as you indicated, some will
handle it as shipped (MSproxy) and some will need a patch. (squid)
If this is a holdup for a new method, I volunteer to submit
a patch to the squid group to fix this.

To use a new scheme means that proxies must understand the
IPP protocol inner workings (which means that it has to know
that its really just HTTP on the wire). To use a new
method means that IPP is a service on HTTP that is identified
by its different method (PRINT).

> -----Original Message-----
> From: Roger K Debry [mailto:rdebry@us.ibm.com]
> Sent: Friday, June 05, 1998 1:00 PM
> To: ipp@pwg.org
> Subject: IPP> Implications of a new scheme, etc
>
>
> As suggested on Wednesday's teleconference, Harry Lewis,
> Carl Kugler, and I produced the attached table (in .pdf format)
> which hopefully summarizes the many views which have been
> expressed on this subject over the last couple of weeks. Our
> intent is that this would help support our position with Keith Moore.=

>
>
>
> Roger K deBry
> Senior Technical Staff Member
> Architecture and Technology
> IBM Printing Systems
> email: rdebry@us.ibm.com
> phone: 1-303-924-4080
>

=