Hi Romain, I think it is more reasonable to send UPDATE requests every 100s (if my session expire is 100) ? What is UPDATE used for, I see it contains no specific information. P/S: I even tried setting my session expire header to 120, but UPDATE is still sent every 50s On Wed, Feb 27, 2013 at 3:26 PM, Romain JEZEQUEL <romainjezequel at yahoo.fr>wrote: > Hi Khoa, > > RFC4028 describes the use of RE-INVITE or UPDATE requests to refresh the > session. > > From RFC4028, section 7.4 : > "If a UAC knows that its peer supports the UPDATE method, it is > RECOMMENDED that UPDATE be used instead of a re-INVITE." > > This is the way it is implemented in PJSIP. > Sending UPDATE requests every 50s means that your session-expires header > is set to 100s. > > Regards, > > Romain > > ------------------------------ > *De :* Khoa Pham <onmyway133 at gmail.com> > *? :* pjsip list <pjsip at lists.pjsip.org> > *Envoy? le :* Mercredi 27 f?vrier 2013 8h06 > *Objet :* [pjsip] What is UPDATE request ? > > Hi all, > > What is UPDATE request? > I see that when A call B, the INVITE 200 OK from B indicates that A is > the refresher. And A send UPDATE request every 50 seconds. > > Is UPDATE request related to Session timer (RFC 4028) ? > > -- > Khoa Pham > HCMC University of Science > Faculty of Information Technology > > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip at lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org > > > > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip at lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org > > -- Khoa Pham HCMC University of Science Faculty of Information Technology -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20130227/c85e2707/attachment-0001.html>
