28 Feb
2008
28 Feb
'08
7:12 a.m.
Hi Andreas,
Andreas Granig wrote:
Hi,
Puh, it's been a while since I wrote that, so let me think :)
As far as I remember, the idea was to extract the first branch and
push it into R-URI, then jump somewhere into the route sections where
quite some R-URI manipulation and checking is done (and most of the
functions can only operate on r-uri, so...)... after that, the ruri is
again appended as branch before sending it out. Only problem is that
you can only use one destination.
Bogdan, what exactly do you mean by "if it does append_branch
somewhere later, it will just duplicate a branch"?
I mean get_redirects()
function adds (internally) a new branch (from the
contact of the 3xx reply). And you take its value (via $ds), do whatever
you do with it, and add it again from script (append_branch) -> you have
2 branches...
This in my opinion on this piece of script, but there is also the chance
I'm missing something here...I haven't tried it ;)
Regards,
Bogdan
Cheers,
Andreas
Bogdan-Andrei Iancu wrote:
Hi Zahid,
To be honest, I do not see the purpose of this:
# get last URI from destination-set and set it as R-URI
avp_delete("$avp(s:tmp)/g");
$avp(s:tmp) = $ds;
avp_subst("$avp(s:tmp)", "/.*(sip:.+@[^:;>]+).*$/\1/");
avp_pushto("$ru", "$avp(s:tmp)");
This code fetches the first branch (by using the $ds pv and the
regexp) and push it as RURI; but if there is no following
append_branch(), it has 0 effect. And if it does append_branch
somewhere later, it will just duplicate a branch....
Maybe Andreas (here CCed) can give you some details on this.....
Regards,
Bogdan
Zahid Mehmood wrote:
Hi,
If get_redirect() is already pushing the contacts as branches,
then what is the purpose / benefit / drawback of doing something
like this:
taken from sipwise online config:
if(!get_redirects("1:1"))
{
xlog("L_ERROR", "Failed to fetch contact '$ct' from
301/302 - M=$rm RURI=$ru F=$fu T=$tu IP=$si ID=$ci\n");
acc_db_request("480", "acc");
t_reply("480", "Temporarily Unavailable");
exit;
}
# get last URI from destination-set and set it as R-URI
avp_delete("$avp(s:tmp)/g");
$avp(s:tmp) = $ds;
avp_subst("$avp(s:tmp)", "/.*(sip:.+@[^:;>]+).*$/\1/");
avp_pushto("$ru", "$avp(s:tmp)");
I'd greatly appreciate your answers as they will help me better
understand the use of branches/destination set.
Thanks.