I am using opensips as a proxy, when a CANCEL to an INVITE comes in, its
processed as follows
# CANCEL processing
if (is_method("CANCEL"))
{
if (t_check_trans())
t_relay();
exit;
}
in t_relay() seems like its creating new transaction for CANCEL and forwarding
to the destination. However its not copying user-defined Headers which comes as
a part of CANCEL. Is there a way to forward the other Headers ?
I also tried using forward(). In this case, all the headers are getting
forwarded, however, the branch in Via header is getting duplicated from the
incoming VIA header which is causing issues with the endpoint.
Question 1) If I use t_realy() for CANCEL, then how do I forward user defined
Headers ?
Question 2) If I use forward() for CANCEL, then how do I get the Via Header
with proper branch as created in INVITE ?
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