According to the ABNF specified in RFC 4566, the media format is not "alpha-numeric" only, it is "token" instead.
In fact, the "token" rule allows several more characters than those allowed by the regular expressions used by jSDP to validate the various SDP tokens, that's "\w".
For the sake of clarity, the following media descriptor is not parsed correctly by jSDP version 1.1 (Mon May 05...
2009-08-27 10:53:33 UTC in jSDP
