urlmon: Implement FindMimeFromData

Kevin Koltzau kevin at plop.org
Thu Mar 18 14:34:47 CST 2004

IE overrides MIME types for more then just ambiguous types, to quote one test mentioned in the appendix

"If the server-provided MIME type is either known or ambiguous, the buffer is scanned in an attempt to verify
or obtain a MIME type from the actual content. If a positive match is found (one of the hard-coded tests succeeded),
this MIME type is immediately returned as the final determination, overriding the server-provided MIME type (this type
of behavior is necessary to identify a .gif file being sent as text/html)."

On Thursday 18 March 2004 02:58 pm, Juan Lang wrote:
> (Apologies for the lack of quoting.)  According to
> that appendix, IE should only be overriding MIME types
> that are text/plain, application/octet-stream, or
> empty.  It does so because it considers these
> "ambiguous".  I think your patch may be useful for the
> small set of types you suggest, but shouldn't you only
> override in these cases too?

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