Hello Scott,
On 4/5/07, Scott Reynen <[EMAIL PROTECTED]> wrote:
On Apr 5, 2007, at 2:56 PM, Charles Iliya Krempeaux wrote:
> Hello Scott,
>
> You can find more info about Content Types here...
>
> Section 14.17 of RFC 2616
> http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.17
Hmm, reading that gives me the impression that parameters are defined
when media types are registered, and aren't something we can add to
suit our needs.
I don't believe that is the case.
I believe (according to the spec) you are free to create your own
Content Type parameters.
That quote...
"The presence or absence of a parameter might be significant to the
processing of a media-type, depending on its definition within the
media type registry."
... only implies that there MIGHT be some Content Type parameters
defined with the Media Type registration -- with the MIME Type
registration.
I've seen examples in the wild of people creating their own Content
Type parameters to existing registered Media/MIME types. (I've even
done it.) And although that does not prove that doing so is what the
spec says... it is evidence towards it.
See ya
That links to this:
http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.7
Which says "The presence or absence of a parameter might be
significant to the processing of a media-type, depending on its
definition within the media type registry."
So the media type registry determines the significance of parameters
for that media type. In the text/html registry [1], for example, I
see "Optional parameters: charset". But in the audio/mpeg registry,
I see "Optional parameters: none". I couldn't find any discussion of
parameters specific to video/mpeg, but video/mp4 [3] also says
"Optional parameters: none", as does video/quicktime [4]. Microsoft
has, of course, used unregistered X- content types. So what exactly
does "Optional parameters: none" mean? It seems to suggest we don't
have the option of parameters on these content types, but maybe I'm
reading that too literally?
[1] http://tools.ietf.org/html/rfc2854
[2] http://tools.ietf.org/html/rfc3003
[3] http://tools.ietf.org/html/rfc4337
[4] http://www.iana.org/assignments/media-types/video/quicktime
--
Charles Iliya Krempeaux, B.Sc.
charles @ reptile.ca
supercanadian @ gmail.com
developer weblog: http://ChangeLog.ca/
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