Section 4.2 of RFC 4288 says: "Both type and subtype names are
case-insensitive." That should be operable since "telephone-events" is a
mime subtype.
Thanks,
Paul
On 7/24/12 10:21 AM, Worley, Dale R (Dale) wrote:
> On Tue, 2012-07-24 at 18:12 +0530, Pranab Bohra wrote:
>> From rfc 4566 -
>>
>> "In general,<value> is either a number of fields delimited by a single
>> space character or a free format string, and is case-significant
>> unless a specific field defines otherwise."
>>
>> I would infer that<value> is case-significant as well.
>
> I've searched RFC 4566 and the only appearances of "significant" and
> "sensitive" are these:
>
> section 5 (applicable to all lines)
>
> In general,<value> is either a number of fields delimited by a single
> space character or a free format string, and is case-significant
> unless a specific field defines otherwise.
>
> section 6
>
> a=charset:<character set>
>
> ... The character set identifier is
> a US-ASCII string and MUST be compared against the IANA
> identifiers using a case-insensitive comparison.
>
> There are an assortment of examples showing some values as upper-case
> and some as lower-case. But that appears to simply be how the values
> are defined.
>
> http://www.iana.org/assignments/sdp-parameters/sdp-parameters.xml,
> section "proto", agrees with RFC 4566 section 5.14 that some values of
> <proto> are upper-case and some are lower-case:
>
> <proto> is the transport protocol. The meaning of the transport
> protocol is dependent on the address type field in the relevant
> "c=" field. Thus a "c=" field of IP4 indicates that the transport
> protocol runs over IP4. The following transport protocols are
> defined, but may be extended through registration of new protocols
> with IANA (see Section 8):
>
> * udp: denotes an unspecified protocol running over UDP.
>
> * RTP/AVP: denotes RTP [19] used under the RTP Profile for Audio
> and Video Conferences with Minimal Control [20] running over
> UDP.
>
> * RTP/SAVP: denotes the Secure Real-time Transport Protocol [23]
> running over UDP.
>
> Similarly,
> http://www.iana.org/assignments/rtp-parameters/rtp-parameters.xml
> section "RTP Payload Format media types" shows some values in upper-case
> and some in lower-case. Thus one must specify:
>
> a=rtpmap:97 L16/48000/2
> a=rtpmap:98 t140c
>
> Dale
>
>
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