i couldn't find a pvar that would contain the transport protocol of
received request as string.
ir would be handy, for example, if i want to send the request out using
the same transport it came in, for example:
$du = "sip:SOME_IP:SOME_PORT;transport=" + $proto;
i know that i can test PROTO and then set a pvar based on it, but the
above would be more convenient.
-- juha