[Kamailio-Users] Dialog profile size not resetting in 1.4.4.

[Alex Balashov]

Greetings,

I've run into an issue with 1.4.4 in which the following appears to be 
happening, and I'm yet to determine the cause:

The total amount of open inbound calls (dialogs) is tracked with the 
dialog module by putting them in a global profile.  Because of a 
segfault bug with profiles with "no values," a workaround is used 
wherein a profile "with" values is created and the hash key is always 
the same value (i.e. "1").   The dialog tracking flag is 2:

    modparam("dialog", "dlg_flag", 2)

And profile looks like this:

   modparam("dialog", "profiles_with_value", 
"globalinbound;specificinbound")

Anyway, inbound INVITEs get handed off to a route (route[1]) that 
performs some logic like this:

   route[1] {
       # Check if DID is assigned to an account with database
       # and store value in AVP, along with other values.

       if($avp(S:did_assigned) == "0") {
           sl_send_reply("404", "Not Found");
           exit;
       }

       get_profile_size("specificinbound", "$avp(S:account_id)", 
"$var(a_concurrent_calls)");

       if($var(a_concurrent_calls) >= $avp(S:port_limit)) {
           sl_send_reply("486", "Busy");
           exit;
       }

       setflag(2);   # Track dialog.

       set_dlg_profile("globalinbound", "1");
       set_dlg_profile("specificinbound", "$avp(S:account_id)");
   }

What appears to be happening is that calls coming into unassigned 
numbers ($avp(S:did_assigned) == "0") increase the size of the 
"globalinbound" profile, which is something of a mystery to me since I 
am neither setting flag 2 nor calling set_dlg_profile() until further 
down in the logic!  And after the 404 Not Found reply is sent, the 
profile size is not decremented.  Is the use of statefully tracked 
replies (t_reply()) required in order to propagate dialog state through 
to the dialog module?  My impression is this was not the case.

More pressing concern is that profile size is increased and not 
decreased;  in my interpretation, such calls should not be added to the 
'globalinbound' profile at all.

I have not had the opportunity to try to reproduce this with 1.5.x.

Thanks!

-- 
Alex Balashov
Evariste Systems
Web    : http://www.evaristesys.com/
Tel    : (+1) (678) 954-0670
Direct : (+1) (678) 954-0671
Mobile : (+1) (678) 237-1775