[OpenSIPS-Users] Session timers refreshing

[Răzvan Crainea]

Hi, Mariana!

The dialog timeout avp has effect only if it is set before match_dialog 
and loose_route. But only the dialog matched by either loose_route, 
either match_dialog, will be updated. If none is found, then nothing 
will be changed. Therefore I can't really see a problem here - if the 
UPDATE doesn't match the dialog, you can freely reply with a 481 without 
any consequences.

Best regards,

Razvan Crainea
OpenSIPS Core Developer
http://www.opensips-solutions.com

On 11/12/2012 08:21 PM, Mariana Arduini wrote:
> After some testing I found out the dialog timeout is correctly 
> refreshed if I set the avp before calling match_dialog(), but this is 
> a problem, because we can only refresh the timer if the UPDATE message 
> belongs to a dialog. Otherwise, we must reply with a 481.
>
> I tried using loose_route() instead but no success yet.
>
> Please advise.
>
> Thanks,
> Mariana.
>
>
> On Mon, Nov 12, 2012 at 3:17 PM, Mariana Arduini 
> <marianarduini at gmail.com <mailto:marianarduini at gmail.com>> wrote:
>
>     Hello all,
>
>     I´ve checked on SST module and it does not mention anything about
>     refreshing the dialog timeout value. We need to handle this
>     through UPDATE messages.
>
>     We are using dialog module:
>
>     modparam("dialog", "timeout_avp", "$avp(session_expires)")
>
>     When we get the INVITE, we do:
>
>             if($(hdr(Session-Expires)))
>             {
>                 # Handling the case "Session-Expires: 4000;refresher=uac"
>                 $var(se_value) = $(hdr(Session-Expires){s.select,0,;});
>
>                 if($(var(se_value){s.int <http://s.int>}) >= MIN_SE)
>                 {
>                     # Setting/Updating dialog's timeout
>                     $avp(session_expires) = $(var(se_value){s.int
>     <http://s.int>});
>                     xlog("L_ERR","******** set timer for INVITE:
>     $avp(session_expires) seconds");
>                 }
>                 else
>                 {
>                      xlog("L_ERR","Session-Expires header value lower
>     than minimum supported (MIN_SE)");
>                     append_to_reply("Min-SE: MIN_SE\r\n");
>                     sl_send_reply("422","Session Interval Too Small");
>                     exit;
>                 }
>             }
>
>     Using dlg_list, I can see the dialog timeout was correctly set.
>     When I do the same thing for the UPDATE, the dialog timeout is not
>     refreshed:
>
>      if (is_method("UPDATE") && $(hdr(Session-Expires)) ) {
>
>             if(match_dialog())
>             {
>                 # Handling the case "Session-Expires: 4000;refresher=uac"
>                 $var(se_value) = $(hdr(Session-Expires){s.select,0,;});
>
>                 if($(var(se_value){s.int <http://s.int>}) >= MIN_SE)
>                 {
>                     $avp(session_expires) = $(var(se_value){s.int
>     <http://s.int>});
>                 } else {
>                     xlog("L_ERR","Session timer not refreshed");
>                 }
>
>                 sl_send_reply("200", "OK");
>                 exit;
>             }
>             else
>             {
>                 sl_send_reply("481", "Transaction Does Not Exist");
>                 exit;
>             }
>
>     }
>
>     Any hints, please?
>
>     Thanks in advance.
>
>     Mariana.
>
>
>
>
> _______________________________________________
> Users mailing list
> Users at lists.opensips.org
> http://lists.opensips.org/cgi-bin/mailman/listinfo/users

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.opensips.org/pipermail/users/attachments/20121112/5633a443/attachment-0001.htm>