Hi All, I checked section "18.2.2 Sending Responses" in RFC3261 and section "5 Server Usage" in RFC 3263, maybe I missed something. My concern is whether it is mandatory for RESPONSE to use the same transport protocol as its REQUEST. Needn't think about TLS but UDP/TCP. For example, incoming REQUEST is "Via: SIP/2.0/UDP", can I use TCP to send its response. Needn't consider NAT etc. issues. Just wanna make sure SIP specs don't forbid it. Because sometimes incoming REQUEST is via UDP, and its RESPONSE takes big message body, can I use TCP to send REPONSE back. My expecting transport policy in the case is to try TCP firstly, if it is failed, will have to use UDP to resend mandatorily.
Thanks and Regards, JC _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
