See inline.. On Wed, Aug 1, 2012 at 8:00 AM, Keerthi Srinivasan < [email protected]> wrote:
> All, > > Can anyone help in unknown transport in Via Header > > 1. If the Proxy / Registrar received the below message. > > OPTIONS sip:[email protected] SIP/2.0 > To: sip:[email protected] > From: <sip:[email protected]>;tag=323 > Max-Forwards: 70 > Call-ID: transports.kijh4akdnaqjkwendsasfdj > Accept: application/sdp > CSeq: 60 OPTIONS > * Via: SIP/2.0/UNKNOWN t4.example.com;branch=z9hG4bKasd0f3en* > l: 0 > > What could be the response? > "RFC 3261, Section 25.1 Basic Rules" defines the transport as one of the following: ------------------------- transport = "UDP" / "TCP" / "TLS" / "SCTP" / other-transport ------------------------- Therefore it is possible that other transports will appear in the Via header. But weather UAS does understands them is a different question. In case if it doesn't I guess it should return an error (i.e. 400) with further explanation that transport is not supported? > > 2. If the Proxy / Registrar received the below message. > > > OPTIONS sip:[email protected] SIP/2.0 > To: sip:[email protected] > From: <sip:[email protected]>;tag=323 > Max-Forwards: 70 > Call-ID: transports.kijh4akdnaqjkwendsasfdj > Accept: application/sdp > CSeq: 60 OPTIONS > * Via: UNKNOWN/2.0/UDP t4.example.com;branch=z9hG4bKasd0f3en* > l: 0 > > What could be the response? > > "RFC 3261, Section 8.1.1.7 Via" reads the following: ------------------------------------------------------------------------------------ When the UAC creates a request, it MUST insert a Via into that request. The protocol name and protocol version in the header field MUST be SIP and 2.0, respectively. ------------------------------------------------------------------------------------ So the request you presented is non SIP version 2 compliant, therefore UAS should again return an error as in the case above? Regards, Brez _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
