El Jueves, 25 de Junio de 2009, Krishna Rao Gurram escribió: > It has also been mentioned in this Section that "Entries marked "m" are > mandatory, those marked "o" are optional, and those marked "-" are not > allowed." > > Does this mean port number must not be present in the From and To headers? > The grammar for From and To headers permits the presence of port number in > the From / To URIs.
Yes, port makes no sense in From/To URI (neither in P-Asserted-Identity and so). And yes, even if the BNF grammar allows something doesn't mean that it's valid for all the contexts. For example, "Contact" header grammar allows a value of "*": Contact: * This is used in REGISTER with "Expires: 0" to de-register all the contacts for the AoR in To header. But of course, "Contact: *" is not allowed in an INVITE or response. -- Iñaki Baz Castillo <[email protected]> _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
