El Miércoles, 4 de Marzo de 2009, alexander merkulov escribió:
> thats work for invite nice, but not work fro cancel
> even this (very simple form) not change cancel
>
> if (method == "BYE" || method == "CANCEL") {
> # xlog("bye\n");a
> xlog("L_INFO", "CANCEL - M=$rm RURI=$ru F=$fu T=$tu
> IP=$si ID=$ci\n");
> if(t_check_trans()){
> xlog("triing to rewrite");
> if ( subst('/192/aaa/ig') ) {};
> t_relay();
> exit;
> }else{
> xlog("no trans");
> exit;
> }
CANCEL is hop-by-hop. This means that when a proxy receives a CANCEL it
*doesn't* forward it. Instead it "eats" that CANCEL and *generates* a new
one. This is how SIP defines the behaviour of a CANCEL.
But again I ask you, why do you need rewritting the To header? It shouldn't be
required, neither in a CANCEL. In fact when a UAS receives a CANCEL it just
should inspect the Via "branch" parameter to match it against a current
INVITE server transaction.
--
Iñaki Baz Castillo
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