Hi, On Mon, Jun 14, 2010 at 12:13 PM, Iñaki Baz Castillo <[email protected]> wrote: > Hi, after reading RFC 3311 (UPDATE method) and RFC 4028 (Session > Timers) it's not clear for me if I can use UPDATE requests and > responses with no SDP offer/answers after the dialog is established. > > This is, does an UPDATE request without SDP make sense after dialog is > established? or would the lack of a SDP affect the currently > negociated media session? >
I'm not 100% sure if this breaks any spec but I've seen it in action. A conference application I regularly use sends in-dialog UPDATE requests without SDP to 'ping' the dialog (I guess :) ). > For example, for a "transparent" B2BUA it would be nice just to handle > UPDATE requests with no SDP so it doesn't require to be media session > aware. > I don't know any reason why you couldn't do that. Regards, -- /Saúl http://saghul.net | http://sipdoc.net _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
