KUMARAVEL ANAND-MWCH34 wrote:
>
> Hanifa,
> As per RFC 5627,section 3.2, all of the temporary GRUUs learned
> from REGISTER responses of a contact remain valid as long a contact with
> that instance ID remains registered and the UA doesn't change the
> Call-ID in its REGISTER request compared to previous ones for the same
> reg-id.
>
> So you can use the first temp-gruu as long as the conditions above are
> satisfied.
You can do that if you wish. It certainly is simpler.
In any case, you only need to remember the ones you use, or may want to use.
Beware that if you use the same one for multiple calls then you are
compromising your privacy because those can be correlated to recognize
they are from the same UA.
Thanks,
Paul
> Thanks
> Anand.
>
> -----Original Message-----
> From: sip-implementors-boun...@lists.cs.columbia.edu
> [mailto:sip-implementors-boun...@lists.cs.columbia.edu] On Behalf Of
> hanifa.mohammed
> Sent: Friday, March 19, 2010 3:32 PM
> To: sip-implementors@lists.cs.columbia.edu
> Subject: [Sip-implementors] [gruu] First temporary GRUU
>
> Hi,
> In GRUU, for every REGISTER, the Registrar gives a different
> temp-gruu value. i.e. even for each refresh, a temp gruu is given.
> Registrar guarantees that all temp gruu's are valid till the user
> deregisters or change-in-callid value.
>
> My question is that whether the first temp-gruu shall be used for
> all dialogs (with privacy), though a new temp-gruu is given for each
> refresh REGISTER.
>
> Programmatically, I have some issue updating the temp-gruu value
> everytime for refresh REGISTER.
> Pl share your thoughts.
>
> Best Regards,
> Mohammed Hanifa
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