Of Authoritative Metadata and Content-Type

I noticed this the other day:


Ian observes

     Browsers and other user agents largely ignore the HTTP
     Content-Type header, relying on undefined sniffing heuristics to
     determine what the content of a page really is.

and provides a very useful set of test data. However, I find his

     I think it may be time to retire the Content-Type header, putting
     to sleep the myth that it is in any way authoritative, and
     instead have well-defined content-sniffing rules for Web content.

more than a little worrisome. At the very least, it suggests that some
significant applications don't consider authoritative metadata, well,

                                        Be seeing you,

Norman.Walsh@Sun.COM / XML Standards Architect / Sun Microsystems, Inc.
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Received on Friday, 14 April 2006 17:30:36 UTC