[Standards] data element and cid: URL scheme

[Peter Saint-Andre]

In the XMPP Council meeting today, Dave Cridland said [0] he thinks that 
we can't use the cid: URL scheme [1] along with the proposed data 
element protocol [2].

I think Dave may be reading too much into RFC 2111, which states:

    The use of [MIME] within email to convey Web pages and their
    associated images requires a URL scheme to permit the HTML to refer
    to the images or other data included in the message.  The Content-ID
    Uniform Resource Locator, "cid:", serves that purpose.

That provides a (one?) rationale for the cid: scheme, but as far as I 
can see it doesn't say that the cid: URL scheme is restricted for use 
only in MIME-encoded email messages and MUST NOT be used in other 
contexts. Specifically, the usage we're proposing with the data element 
is conceptually similar to the email usage and therefore at least seems 
to not violate RFC 2111.

But maybe I say this only because I really don't want to define a new 
URI scheme if I don't have to... ;-)

/psa

[0] 
http://logs.jabber.org/council@conference.jabber.org/2008-01-09.html#14:04:11

[1] http://tools.ietf.org/html/rfc2111

[2] http://www.xmpp.org/extensions/inbox/data-element.html


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