> From the RFC 3265 im clear that contact header is mandatory > in NOTIFY. > > Does it also hold good for NOTIFY that has been sent for > REFER, because I see some implementations of NOTIFY for > REFER without any contact header. > > Can anyone clarify me on this.
Yes, it is mandatory. However the typical answer is to be strict on sending and lenient on receiving. Thus it is your choice to decide if you prefer to return a 400 response or continue to be interoperable with the device. _______________________________________________ Sip-implementors mailing list [email protected] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
