Hi Aleksey, >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. Thanks, Pranab ________________________________________ From: [email protected] [[email protected]] On Behalf Of Aleksey Entsov [[email protected]] Sent: Tuesday, July 24, 2012 5:44 PM To: sip-implementors Subject: [Sip-implementors] Is value of SDP "a" field case-sensitive? Hi Everyone! In some call scenario I have incoming 180/SDP. And SDP contains this line: ..... a=rtpmap:101 TELEPHONE-EVENT/8000 ..... My gateway cannot parse this string "TELEPHONE-EVENT/8000" because upper-case letters are used. If "telephone-event/8000" string comes in lower-case letters only, then it's fine. Value of "a=" field can be parsed. So the question is: Is it allowed to use upper-case letters for "TELEPHONE-EVENT"? I was searching through RFC, but could not find the explicit approval. RFC4566 says "An SDP session description consists of a number of lines of text of the form: <type>=<value> where <type> MUST be exactly one case-significant character and <value> is structured text whose format depends on <type>. 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. Whitespace MUST NOT be used on either side of the "=" sign." I found that <type> fied should becase sensitive. Bot how about <value>? Best regards, Aleksey Entsov mailto:[email protected] _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors ________________________________ SASKEN BUSINESS DISCLAIMER: This message may contain confidential, proprietary or legally privileged information. In case you are not the original intended Recipient of the message, you must not, directly or indirectly, use, disclose, distribute, print, or copy any part of this message and you are requested to delete it and inform the sender. Any views expressed in this message are those of the individual sender unless otherwise stated. Nothing contained in this message shall be construed as an offer or acceptance of any offer by Sasken Communication Technologies Limited ("Sasken") unless sent with that express intent and with due authority of Sasken. Sasken has taken enough precautions to prevent the spread of viruses. However the company accepts no liability for any damage caused by any virus transmitted by this email. Read Disclaimer at http://www.sasken.com/extras/mail_disclaimer.html _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
