RE: XMPP Compatibility

["Peterson, Jon" <jon.peterson@neustar.biz>]

Just to be clear, SIMPLE's only native format is MIME, and currently the
only media type that is mandatory-to-implement is text/plain (although
there's encouragement in SIP's messaging RFC for support of MSGFMT, it was
not normatively citable at the time the draft was produced). So I don't
think there's some format that SIMPLE is going to be extending that will
conflict with the use of MSGFMT. We don't really need to extend MIME to get
any new features - MIME is already the right way to carry message content.

- J

> -----Original Message-----
> From: Eric Rescorla [mailto:ekr@rtfm.com]
> Sent: Monday, March 31, 2003 3:38 PM
> To: Ted Hardie
> Cc: Peterson, Jon; iab@ietf.org; iesg@ietf.org
> Subject: Re: XMPP Compatibility
> 
> 
> Ted Hardie <hardie@qualcomm.com> writes:
> > I think my take on this is somewhere between 2 and 3.  I 
> would say that
> > we achieve the best result in this current space if we ensure that
> > there is _at_least_one_ mandatory to support message format
> > with _at_least_one_ mandatory to support mechanism to ensure
> > data integrity and _at_least_one_ mandatory to support mechanism
> > for end-to-end encryption.    Supporting more than one message
> > format/data integrity mechanism/end-to-end encryption mechanism
> > seems very, very likely given the place in history we find 
> ourselves;
> > realistically, I think we should accept that and move on.   
>  In the mean
> > time, though, I believe that we should expect that any compliant
> > IM system should be able to handle  the mandatory-to-support
> > message format (no matter whether from some other IM system or
> > from a sibling in its own system), that they should be able to check
> > the data integrity of that message if it has been assured, 
> and that it
> > should be able to handle the encrypted message if the mandatory
> > support form has been used and keys or secretes
> >   have been appropriately exchanged.
> Ted,
> 
> I think the question is what message format XMPP and SIMPLE are
> going to continue to extend. I understand that there are legacy
> formats but I'm quite uncomfortable with the idea that we're going
> to be extending three formats into the foreseable future.
> 
> -Ekr
>