Hi Sanjiv, a 200 OK for an INVITE must be forwarded to a UA. Only UA are allowed to create ACKs for 200 OK (this ACK has a new branch ID and is a own transaction).
A stateful proxy can only create two request CANCEL and ACK for non-successful (3xx - 6xx) responses for INVITE. (this ACK has the same branch ID as the INVITE transaction and belongs to the same transaction). A proxy can decide by checking the branch id if the ACK must be forwarded (different branch ID) or was send hop-by-hop and was for the proxy (same branch ID). I hope you understand my answer. This is a central point in RFC 3261. Regards, Markus [EMAIL PROTECTED] wrote: > Hi, > > When parallel forking is enabled at proxy and proxy fork INVITE request > to n no. of registered contact .In case if proxy receives 200 OK from any > two contact simaltaneously, then what shall be the proxy behaviour , > whether it forwards both the 200 OK to UAC or it drops one of the 200 OK > response. > > > > > > > "The fragrance of flowers spreads only in the direction of the wind. But > the goodness of a person spreads in all direction." > > > > Thanks & regards > Sanjiv kumar Jaiswal > Software Engineer > Flextronics Software System > Emp ID-8494 > TEL-918051069164 > MOB-919886189960 > > *********************** FSS-Private *********************** > "DISCLAIMER: This message is proprietary to Flextronics Software Systems > (FSS) and is intended solely for the use of > the individual to whom it is addressed. It may contain privileged or > confidential information and should not be > circulated or used for any purpose other than for what it is intended. If you > have received this message in error, > please notify the originator immediately. If you are not the intended > recipient, you are notified that you are strictly > prohibited from using, copying, altering, or disclosing the contents of this > message. FSS accepts no responsibility for > loss or damage arising from the use of the information transmitted by this > email including damage from virus." > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
