Thanks Benjamin. Arunachalam, thanks for your response, I am not sure I correctly understood your question.The registrar I am working with has an option allowing it to be configured without authentication, which unfortunately cannot be changed.
SD On Wed, May 20, 2009 at 9:03 PM, Benjamin Jacob <[email protected]>wrote: > > What you have described is correct. A different call id is as good as a > different client, but in this case as it's the same UAC, the To and Contact > header would be the same. So, the registration info in the registrar would > be updated with the new call-id, etc. > > Also, each registration request should be authenticated by the registrar to > take care of fake requests. > > Regards > > - Ben > > > > > -----Original Message----- > > From: [email protected] > > [mailto:[email protected]] > > On Behalf Of > > java jalwa > > Sent: Wednesday, May 20, 2009 8:22 PM > > To: [email protected] > > Subject: [Sip-implementors] SIP REGISTER without expiration > > of > > previousREGISTER > > > > Hello All, > > I am trying to interpret > > section 10.3 of RFC 3261 which deals > > with processing of incoming REGISTER requests. > > > > Pardon my possible misuse of sip terminologies. > > > > > > Suppose a UAC,which is registered with a SIP registrar, > > crashes and > > hence is unable to Un register and unable to save its > > previous > > registration state (Call-Id, CSeq etc). > > > > The UAC comes up before the previous registration expires. > > > > When the UAC comes up , if it sends a REGISTER, with a new > > Call-Id > > (Other fields are the same as before: Address-of-record, > > Contact-ID, To, > > From, non zero expiration etc). My interpretation is that > > in this case > > if the Call-Id is different, the CSeq would not be checked. > > Is that > > correct ? The Registrar should update the binding by > > replacing the old > > Call-Id. > > So , unless the Registrar is configured to authenticate a > > UAC , any > > endpoint can send a REGISTER with a different Call-ID and > > cause the > > Registrar to update its bindings. Is that correct ? > > > > Thank you , > > SD > > > > P.S : Please guide me if this is not the appropriate > > mailing list > > _______________________________________________ > > 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 > > > > > > > _______________________________________________ > 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
