Important change for IPP printers

Subject: Important change for IPP printers
From: Marc Krochmal <email@hidden>
Date: Thu, 4 Dec 2003 12:48:53 -0800

Hello,

I've just been informed that the usage of one of the Printing TXT record keys was changed slightly in Mac OS X 10.3. If you make a Rendezvous compatible printer, keep reading...

In Mac OS X 10.2.x, if a key/value pair of "rp=queue12" was present in an IPP TXT record, the following URL would be created...

ipp://<host>/queue12

However, the above URL is not in the proper format for an IPP URL, and so in Mac OS X 10.3 and later, if "rp=queue12" is present, the following URL will be created instead...

ipp://<host>/ipp/queue12

To workaround this change, you could have your printer recognize both URL formats, or you could accept the new URL format, and specify one of the other printing protocols as the highest priority protocol, in order to stay compatible with Mac OS X 10.2.x.

I will update the Printing Spec shortly to reflect this change. Please let me know if you have any questions.

-Marc
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