At 09:11 AM 9/25/97 PDT, Larry Masinter wrote:
>I think that putting that IPP servers MUST support "ftp:" is a mistake,
>since the "ftp:" URL scheme will probably not progress along standards
>track without some serious reengineering, and it isn't clear what it
>is that you're expecting the printers to be conformant with. MUST they
>also support the ";type=" option in FTP URLs, since that's a Proposed
>Standard? MUST they also support ftp://user:@host/ forms?
>>Right now, the choice of binary or ascii transfer methods in FTP is
This might be a reason to drop ftp from our mandatory list, but in any case
we cannot always guarantee that a print-by-reference URI will actually work.
>Frankly, you'd be better off requiring support for URIs of type "https",
>and also in specifying other attributes of what a printer might do when
>retrieving data via http on behalf of another user, e.g., supplying
>credentials, the user-agent string, cookies, etc.
Sorry, but we have already discovered that we cannot do print-by-reference
with any of the existing security mechanisms, so forget "https". We have
enough problems with wanting to reference security work that is not yet on
the standards track.
Principal Engineer - Advanced Printing Standards - 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