Copies To: masinter at parc.xerox.comimcdonal at eso.mc.xerox.comipp at pwg.org
Hi folks, Sunday (7 December 1997)
At our IPP Telecon on Wednesday (3 December), I got the action item to
REVISE the text for registration of MIME media type "application/ipp".
I used revision bars ('|') in the first column, to flag all changes.
The following template came from the IETF MIME Part Four: Registration
Procedures (RFC 2048, November 1996).
We can apply for registration of this media-type when the IESG accepts
our IPP/1.0 specs for entry onto the Internet 'standards track'. The
application is normally made by mail (see below) and does NOT need to be
supported by a separate Informational RFC.
The 'Intended usage' of 'COMMON' (rather than the former 'LIMITED USE')
is based on two of our decisions on Wednesday (3 December):
a) All IPP Model attributes conveyed (eg, in the IPP/1.0 over HTTP/1.1
mapping) in header fields of the underlying transport protocol, MAY
be specified in the body of the 'application/ipp' message;
b) All 'application/ipp' messages MUST contain a 'transaction ID'
(positive 32-bit integer), supplied by the operation requestor for
later operation response correlations (and possibly notification
correlations in a future version of IPP).
Therefore, use of 'application/ipp' as a MIME type in email is now
straightforward.
Cheers,
- Ira McDonald (outside consultant at Xerox)
High North Inc
716-425-6141 (office at Xerox until April 1998)
716-442-0609 (home in Rochester, NY until April 1998)
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To: ietf-types at iana.org
Subject: Registration of MIME media type "application/ipp"
MIME type name: application
MIME subtype name: ipp
A Content-Type of "application/ipp" indicates an Internet Printing
Protocol message body (request or response). Currently there is
one version: IPP/1.0, described in [IPP-MOD] and [IPP-PRO].
Required parameters: none
Optional parameters: none
Encoding considerations:
IPP/1.0 protocol requests/responses MAY contain long lines and
ALWAYS contain binary data (for example attribute value lengths).
Security considerations:
IPP/1.0 protocol requests/responses do not introduce any security
risks not already inherent in the underlying transport protocols.
| Protocol mixed-version interworking rules in [IPP-MOD] as well as
| protocol encoding rules in [IPP-PRO] are complete and unambiguous.
Interoperability considerations:
IPP/1.0 requests (generated by clients) and responses (generated
by servers) MUST comply with all conformance requirements imposed
| by the normative specifications [IPP-MOD] and [IPP-PRO]. Protocol
| encoding rules specified in [IPP-PRO] are comprehensive, so that
| interoperability between conforming implementations is guaranteed
(although support for specific optional features is not ensured).
Both the "charset" and "natural-language" of all IPP/1.0 attribute
values of syntax "text" or "name" are explicit within IPP protocol
requests/responses (without recourse to any external information
| in HTTP, SMTP, or other message transport headers).
Published specification:
[IPP-MOD] R. deBry, T. Hastings, R. Herriot, S. Isaacson,
P. Powell, "Internet Printing Protocol/1.0: Model and Semantics",
| work in progress <draft-ietf-ipp-model-08.txt>, December 1997.
[IPP-PRO] S. Butler, R. Herriot, P. Moore, R. Turner,
"Internet Printing Protocol/1.0: Protocol Specification",
| work in progress <draft-ietf-ipp-protocol-04.txt>, December 1997.
Applications which use this media type:
Internet Printing Protocol (IPP) print clients and print servers,
| communicating using HTTP/1.1 (see [IPP-PRO]), SMTP/ESMTP, FTP, or
| other transport protocol. Messages of type "application/ipp" are
| self-contained and transport-independent, including "charset" and
| "natural-language" context for any "text" or "name" attributes.
Person & email address to contact for further information:
Scott A. Isaacson
Novell, Inc.
122 E 1700 S
Provo, UT 84606
Phone: 801-861-7366
Fax: 801-861-4025
Email: scott_isaacson at novell.com
or
Robert Herriot
Sun Microsystems Inc.
901 San Antonio Road, MPK-17
Palo Alto, CA 94303
Phone: 650-786-8995
Fax: 650-786-7077
Email: robert.herriot at eng.sun.com
Intended usage:
| COMMON
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