[OpenSIPS-Users] reply_to_via and topmost Via addressing
john.quick at smartvox.co.uk
Tue Mar 5 05:47:37 EST 2019
Update to my earlier post: I found a change log for v1.5 or 1.6 that says
"reply_to_via" option has been withdrawn.
So the documentation needs to be corrected because it is still shown right
through to v2.4
I still have some questions about how much control we have over the routing
Is it possible to change the destination where replies are sent or will they
always be routed to the source address of the corresponding SIP request,
even when the topmost Via has a different address in its URI?
The answer to that question may be in 2 parts because some responses are
generated internally - e.g. "100 Giving a try", some 200 OK's - while others
are received from a downstream server and can be caught in onreply_route.
[It is also possible to explicitly generate responses using t_reply() or
sl_send_reply(), but these offer no routing options].
Supplementary to this, is the addition of ";received=w.x.y.z" to the topmost
Via something that is always done when the source of a request doesn't match
the Via's URI? Does this happen inside t_relay()? Do we have any control of
this from within the script?
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