I am forking a call to multiple destinations and want to keep the only branch
which sends quicker provisional 180/183 reply and cancel the remaining
branches. Below is my related cfg snippet.
modparam("tm", "failure_reply_mode", 3)
modparam("tm", "fr_timer", 30000)
modparam("tm", "fr_inv_timer", 120000)
modparam("tm", "cancel_b_method", 2)
...
route[SIPOUT] {
if (uri==myself) return;
append_hf("P-hint: outbound\r\n");
append_branch();
append_branch();
route(RELAY);
exit;
}
onreply_route[MANAGE_REPLY] {
xdbg("incoming reply\n");
if(status=~"[12][0-9][0-9]") {
xlog("L_INFO","Received $rs (IP:$si:$sp)\n");
if(status=~"18[03]"){
t_cancel_branches("others");
xlog("L_INFO","cancelled all other branches\n");
}
route(NATMANAGE);
}
}
...
But I see kamailio does not instantly send CANCEL to other branches after it
has received 180/180 from any branch.
Kamailio is sending CANCEL to other branches after they start sending 180/183
one by one.
I want to cancel other brances instantly as soon as i get reply from any other
branch.
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