[Users] Context of flags - flag visibility - in openser - sr-users

23 Dec 2005

Hi,

Again a question regarding the OpenSER documentation,
specifically the usage of flags:
What is the context and visibility scope of flags in 
openser? What is their lifetime? 

Maybe some piece of code to clarify things:

route
{
   if (method=="REGISTER")
   {
      setflag(10);
      # do some processing
   }

   if ((method=="INVITE")||(method=="BYE"))
   {
      setflag(11);
   }

   # do some more processing
   t_relay();
}

onreply_route()
{
   if (isflagset(10))
   {
      # received a reply on register, process it
   }
   if (isflagset(11))
   {
      # reply on invite or bye
   }
}

a) Can we expect the flags 10/11 to be identical for 
   route and onreply_route - i.e. in the example above,
   are the flags in status "set" when processing the 
   onreply_route? I.e. isflagset(10) returns true if 
   we process the 200 OK in reply to a REGISTER?
b) Do we need to explicitely reset the flag or is it
   automatically cleared? Specifically: If an INVITE
   and the matching OK are processed, is it required
   to reset the flag afterwards in onreply_route?
   I.e., if after the 200OK to INVITE a 200 OK reply 
   to a SUBSCRIBE is processed by onreply_route and 
   we did _not_ reset the flag 11, does isflagset(11) 
   return true or false on the 200 OK for SUBSCRIBE?

Finally another question: must onreply_route be explicitely
triggered (like for onreply_route[1] using t_on_reply("1")) 
or is the default onreply_route anyhow executed 
automatically on any stateful reply?

Thanks in advance,
--Joachim