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Re: [IPP] [EXTERNAL] Re: What value do IPP Printers provide for "printer-name"?

Michael Ziller via ipp <ipp@pwg.org> Tue, 25 June 2024 01:38 UTC

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To: Michael Sweet <msweet@msweet.org>, PWG IPP Workgroup <ipp@pwg.org>
Thread-Topic: [EXTERNAL] Re: [IPP] What value do IPP Printers provide for "printer-name"?
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Date: Tue, 25 Jun 2024 01:38:24 +0000
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Subject: Re: [IPP] [EXTERNAL] Re: What value do IPP Printers provide for "printer-name"?
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From: Michael Ziller via ipp <ipp@pwg.org>
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Cc: Michael Ziller <mziller@microsoft.com>
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Thanks, yeah it would be great if printer-name was usable at some certification+ point. At least then we could say new printers have reliable naming.

-----Original Message-----
From: Michael Sweet <msweet@msweet.org> 
Sent: Saturday, June 22, 2024 10:07 AM
To: PWG IPP Workgroup <ipp@pwg.org>
Cc: Michael Ziller <mziller@microsoft.com>
Subject: [EXTERNAL] Re: [IPP] What value do IPP Printers provide for "printer-name"?

Michael,

> On Jun 21, 2024, at 5:06 PM, Michael Ziller via ipp <ipp@pwg.org> wrote:
> 
> But if the user connects using the IP, 192.168.1.37, are they really expecting the print queue name to show up as “192.168.1.37”?
>  We have precedent for this for TCP ports in Windows and it queries the device for the queue name to use and displays “Manufacturer Model” just like with DNS-SD/mDNS.
> Wouldn’t it make sense to use printer-dns-sd-name here as well then?

The DNS-SD name's scope is (generally) the printer's local subnet and so might conflict if you are accessing it from a different subnet, which might be the case if you are using an IP address or hostname instead of finding it via DNS-SD lookup.

The recommendation I am thinking of putting in IPP Everywhere (subject to review of course) is that "printer-name" defaults to "MAKE MODEL (SERIAL-NUMBER-OR-MAC-ADDRESS)" and "printer-dns-sd-name" defaults to the "printer-name" value.  Thus, "printer-name" retains the semantics of being the user friendly name to identify the printer with and "printer-dns-sd-name" tracks the current DNS-SD service instance name with any conflicts resolved.

We can also talk about how the other IPP attributes ("printer-geo-location", "printer-info", "printer-location", "printer-make-and-model", and "printer-serial-number") are presented/used, with examples to clarify the semantics of each.

________________________
Michael Sweet

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