Feature Requests item #1583144, was opened at 2006-10-23 23:36 Message generated for change (Comment added) made by bogdan_iancu You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=743023&aid=1583144&group_id=139143
Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: modules Group: None Status: Open Resolution: None Priority: 5 Private: No Submitted By: reticent (unspin) >Assigned to: Bogdan (bogdan_iancu) Summary: (Registrar)State information, for currently registered users Initial Comment: The "registrar" module supports a feature to send SIP OPTIONS messages as keepalives, this provides an opportunity to determine if the user is currently available or not In the event that a user becomes unavailable their location information could be updated to include this information and subcequent useage of "lookup()" could take this into account If the UAC is not responding to OPTIONS messages then its very likely that its not going to respond to an INVITE, in which case you can expediate processing of forwarding logic or an unavailable response It may also be useful to be able to enable/disable this feature on a per registration basis as there are some UACs that do not support OPTIONS messages ---------------------------------------------------------------------- >Comment By: Bogdan (bogdan_iancu) Date: 2006-11-13 18:59 Message: Logged In: YES user_id=1275325 Hi, actually the sent OPTION is not used to see if the clinet is still reachable, but just for NAT pinging purposes. The biggest problem with what you are looking for is the fact that the OPTIONs are statelessly sent, so there is no matching between the sent requests or received replies (if any), so you cannot tell which client is up or not. Using a statefull approach will have a huge performace penalties - at every 10 secs you will need to send a statefull request to *all* your registered clients....that will be a bit to costly. maybe a solution will be keep using stateless OPTIONS but to encode in VIA (or CALLID) a reference to the contact it pings to; the usrloc module will check the time difference between the last sent request and last received reply..... bogdan ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=743023&aid=1583144&group_id=139143 _______________________________________________ Devel mailing list [email protected] http://openser.org/cgi-bin/mailman/listinfo/devel
