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Hi Mike,<br><br>One more thought about interoperability.<br><br>RFC 2911 says in section 4.4.18 "charset-supported" (REQUIRED)<br>that 'utf-8' MUST be supported by all IPP Printers.<br><br>But RFC 2911 in section 4.4.17 "charset-configured" (REQUIRED)<br>
is silent about any default value.<br><br>I think that IPP Everywhere should say that "charset-configured"<br>MUST default to 'utf-8' - for compatibility with printing gateways,<br>RESTful/SOAPy XML schema, and modern SNMP MIBs which<br>
all use SnmpAdminString (UTF-8 fixed charset) for localized text.<br><br>Cheers,<br>- Ira<br><br><br clear="all">Ira McDonald (Musician / Software Architect)<br>Chair - Linux Foundation Open Printing WG<br>Co-Chair - IEEE-ISTO PWG IPP WG<br>
Co-Chair - TCG Hardcopy WG<br>IETF Designated Expert - IPP & Printer MIB<br>Blue Roof Music/High North Inc<br><a href="http://sites.google.com/site/blueroofmusic" target="_blank">http://sites.google.com/site/blueroofmusic</a><br>
<a style="color: rgb(102, 0, 204);" href="http://sites.google.com/site/highnorthinc" target="_blank">http://sites.google.com/site/highnorthinc</a><br>mailto:<a href="mailto:blueroofmusic@gmail.com" target="_blank">blueroofmusic@gmail.com</a><br>
Christmas through April:<br> 579 Park Place Saline, MI 48176<br> 734-944-0094<br>May to Christmas:<br> PO Box 221 Grand Marais, MI 49839<br> 906-494-2434<div style="display: inline;"></div><div style="display: inline;">
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<br><br><div class="gmail_quote">On Tue, Mar 15, 2011 at 1:20 PM, Ira McDonald <span dir="ltr"><<a href="mailto:blueroofmusic@gmail.com">blueroofmusic@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
Hi Mike,<br><br>Good thinking!<br><br>I've been worrying about this proliferation of IPP Everywhere<br>conformance levels (in some IPP attribute?) that would sort of <br>compete with regular IPP protocol version levels.<br>
<br>I much prefer to use the IPP 2.0, 2.1, and 2.2 protocol versions <br>for our IPP Everywhere conformance levels.<br><br>More questions:<br><br>(1) Do we need a new IPP boolean ipp-everywhere-supported <br>attribute to specify that IPP Everywhere is supported.<br>
<br>(2) Do we need a new IPP keyword ipp-discovery-supported <br>attribute to specify the (one or more) discovery protocols that<br>are supported.<br><br>Cheers,<br>- Ira<br><br clear="all">Ira McDonald (Musician / Software Architect)<br>
Chair - Linux Foundation Open Printing WG<br>Co-Chair - IEEE-ISTO PWG IPP WG<br>Co-Chair - TCG Hardcopy WG<br>IETF Designated Expert - IPP & Printer MIB<br>Blue Roof Music/High North Inc<br><a href="http://sites.google.com/site/blueroofmusic" target="_blank">http://sites.google.com/site/blueroofmusic</a><br>
<a style="color: rgb(102, 0, 204);" href="http://sites.google.com/site/highnorthinc" target="_blank">http://sites.google.com/site/highnorthinc</a><br>mailto:<a href="mailto:blueroofmusic@gmail.com" target="_blank">blueroofmusic@gmail.com</a><br>
Christmas through April:<br> 579 Park Place Saline, MI 48176<br> <a href="tel:734-944-0094" target="_blank">734-944-0094</a><br>May to Christmas:<br> PO Box 221 Grand Marais, MI 49839<br> <a href="tel:906-494-2434" target="_blank">906-494-2434</a><div>
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<br><br><div class="gmail_quote">On Tue, Mar 15, 2011 at 11:59 AM, Michael Sweet <span dir="ltr"><<a href="mailto:msweet@apple.com" target="_blank">msweet@apple.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
All,<br>
<br>
As I am getting the rest of the IPP Everywhere spec together, it occurs to me that there are two logical categories of IPP printers we may want to use from a client:<br>
<br>
1. A standalone personal/workgroup printer that prints (and accepts) one job at a time (basically IPP/2.0)<br>
2. A managed printer/print service that prints (and accepts) multiple jobs at a time (IPP/2.1 or IPP/2.2)<br>
<br>
Now, we could define these as separate conformance levels for IPP Everywhere, *or* we could have IPP Everywhere use the protocol versions defined in IPP/2.0 SE as the basis for IPP Everywhere's different conformance levels.<br>
<br>
Quick outline:<br>
<br>
IPP/2.0: Add required JPS3 attributes and operations, Cancel-My-Jobs and media-col-database from JPS2, DNS-SD for discovery, and PWG Raster as the required document format.<br>
<br>
IPP/2.1: Add required JPS3 attributes and operations, Cancel-My-Jobs, Cancel-Jobs, and media-col-database from JPS2, DNS-SD, LDAP, and SLP for discovery, and PWG Raster and PDF as the required document formats.<br>
<br>
IPP/2.2: Add required JPS3 attributes and operations, DNS-SD, LDAP, and SLP for discovery, and PWG Raster and PDF as the required document formats.<br>
<br>
Thoughts?<br>
<br>
________________________________________________________________________<br>
Michael Sweet, Senior Printing System Engineer, PWG Chair<br>
<br>
<br>
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