IPP> URL - Last Call comments from the PWG meeting on "IPP: IPP URL S cheme" closing on March 26, 2001

IPP> URL - Last Call comments from the PWG meeting on "IPP: IPP URL S cheme" closing on March 26, 2001

Hastings, Tom N hastings at cp10.es.xerox.com
Thu Mar 22 19:04:53 EST 2001


I've extracted the edits that Don made at the IPP WG meeting in Tampa so
that the mailing list can see them regarding the "Internet Printing Protocol
(IPP):  IPP URL Scheme" out for IPP WG Last Call closing on March 26, 2001.
These comments are being treated as Last Call comments.  Send any comments
on these comments to the entire mailing list.


1. In section 4.5. IPP URL Scheme Syntax in ABNF, there are the following
statements at the end:

   If a proxy receives a host name which is not a fully
   qualified domain name, it MAY add its domain to the host name it
   received.  If a proxy receives a fully qualified domain name, the
   proxy MUST NOT change the host name. 

IS THIS TEXT FROM SOME OTHER DOCUMENT?  SHOULD WE REFERENCE IT INSTEAD?  IF
NOT, WHERE DID THIS BEHAVIOR COME FROM? 


2. In section 4.5.2. IPP URL Comparisons, we suggest a simpler explanation
of the comparison algorithm:
   
   When comparing two IPP URLs to decide if they match or not, an IPP
   Client SHOULD use a case-sensitive octet-by-octet comparison of the
   entire URLs, with these exceptions:  
   
   - A port that is empty or not given is equivalent to the well-known
     port for that IPP URL (port 631);
   
   - Comparisons of host names MUST be case-insensitive;
   
   - Comparisons of scheme names MUST be case-insensitive;
   
   - An empty 'abs_path' is equivalent to an 'abs_path' of "/".
   
   Characters other than those in the "reserved" and "unsafe" sets (see 
   [RFC-2396] and [RFC-2732]) are equivalent to their ""%" HEX HEX"
   encoding.  
   
   For example, the following three URIs are equivalent:  
   
       ipp://abc.com:631/~smith/printer
       ipp://ABC.com/%7Esmith/printer
       ipp://ABC.com:/%7esmith/printer

Would this be more clear?  "All of the URL up to the 'abs_path' MUST be
case-insensitive.  The 'abs_path' SHOULD be case-sensitive."


Thanks,
Tom

-----Original Message-----
From: Manros, Carl-Uno B [mailto:cmanros at cp10.es.xerox.com]
Sent: Friday, March 09, 2001 15:59
To: 'IETF-IPP'
Subject: IPP> ADM - IPP WG Last Call for "Internet Printing Protocol
(IPP): IPP URL Scheme" closing on March 26, 2001


All, 

This is a working group Last Call for the "Internet Printing Protocol (IPP):
IPP URL Scheme".  A version of this documents has been forwarded to the
Internet
Draft directory as <draft-ietf-ipp-url-scheme-02.txt>

PDF and Word versions of the drafts are also posted at the ietf-ipp web
site:  

          ftp://ftp.pwg.org/pub/pwg/ipp/

The Last Call notice follows:     

This is a formal request for final comments within the IETF IPP
working group for one document. The  document is "Internet Printing Protocol
(IPP): IPP URL Scheme", which is being proposed for forwarding on to the
IESG for consideration as Standards Track RFC.
  
This is a working group product, which has been thoroughly discussed since
late 2000. 

The document has undergone review and revisions during the past few months
and I believe that we now have working group consensus on its adequacy.

The document is an extension to RFC 2911. 

The purpose of a working group Last Call is in the style of "speak now or
forever hold your peace" in case there are fundamental objections which have
not gotten previous or adequate discussion, or minor errors which need
correction.  

Last Calls are for a minimum of 2 weeks. The period for working group
comments will close on Monday, 26 March, 2001 (US Pacific time reference),
to allow review during the upcoming IETF50 Meeting.

The relevant document is:

	Title		: Internet Printing Protocol (IPP): IPP URL Scheme
	Author(s)	: R. Herriot, I. McDonald
	Filename	: draft-ietf-ipp-url-scheme-02.txt
	Pages		: 16
	Date		: 14-Feb-01
	
	
   This document is a product of the Internet Printing Protocol Working 
   Group of the Internet Engineering Task Force (IETF).  Comments should
   be submitted to the ipp at pwg.org mailing list.  
   
   This document is intended for use in registering the "ipp" URL scheme
   with IANA and fully conforms to the requirements in [RFC-2717].  This
   document defines the "ipp" URL (Uniform Resource Locator) scheme for
   specifying the location of an IPP Printer, IPP Job, or other IPP
   object (defined in some future version of IPP) which implements the
   IPP/1.1 Model [RFC-2911] and the IPP/1.1 Protocol encoding over HTTP 
   [RFC-2910] or any later version of IPP.  The intended usage of the
   "ipp" URL scheme is COMMON.  
   
   The IPP URL scheme defined in this document is based on the ABNF for
   the HTTP URL scheme defined in HTTP/1.1 [RFC-2616], which is derived
   from the URI Generic Syntax [RFC-2396] and further updated by
   [RFC-2732] and [RFC-2373] (for IPv6 addresses in URLs).  An IPP URL
   is transformed into an HTTP URL according to the rules specified in
   section 5 of the IPP/1.1 Protocol [RFC-2910]. 

This document is a product of the Internet Printing Protocol Working 
Group of the Internet Engineering Task Force (IETF).  Comments should
be submitted to the ipp at pwg.org mailing list.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-ipp-url-scheme-02.txt

Internet-Drafts are also available by anonymous FTP. Login with the username
"anonymous" and a password of your e-mail address. After logging in,
type "cd internet-drafts" and then
	"get draft-ietf-ipp-url-scheme-02.txt".

A list of Internet-Drafts directories can be found in
http://www.ietf.org/shadow.html 
or ftp://ftp.ietf.org/ietf/1shadow-sites.txt

Internet-Drafts can also be obtained by e-mail.

Send a message to:
	mailserv at ietf.org.
In the body type:
	"FILE /internet-drafts/draft-ietf-ipp-url-scheme-02.txt".
	
NOTE:	The mail server at ietf.org can return the document in
	MIME-encoded form by using the "mpack" utility.  To use this
	feature, insert the command "ENCODING mime" before the "FILE"
	command.  To decode the response(s), you will need "munpack" or
	a MIME-compliant mail reader.  Different MIME-compliant mail readers
	exhibit different behavior, especially when dealing with
	"multipart" MIME messages (i.e. documents which have been split
	up into multiple messages), so check your local documentation on
	how to manipulate these messages.

Sincerely,
  
Carl-Uno Manros
Chair of IETF IPP WG


Carl-Uno Manros
Manager, Print Services
Xerox Architecture Center - Xerox Corporation
701 S. Aviation Blvd., El Segundo, CA, M/S: ESAE-231
Phone +1-310-333 8273, Fax +1-310-333 5514
Email: manros at cp10.es.xerox.com 



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