Hi Nathaniel,
According to SIP RFC, replies are following the same path as requests
(in revert order, of course) - this back routing is done based on VIA
hdr (added in requests, consumed from replies).
if you want to avoid opensips to add the VIA hdr (so, to be skipped by
replies), use the send() function for relaying the requests - be careful
this is a stateless function, so no failure_route !
Regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com
On 03/14/2013 09:30 AM, Nathaniel L Keeling III wrote:
Hello,
I would like to know if this routing is possible and if so how. I have
a scenario where I have a opensips proxy that I want to use just to
send requests to other opensips proxy witch would then process the
request. Here is the scenario: client --> p1 --> p2 --> client -->
p2. I have been able to route to proxy 2 but the replies are still
being routed back via proxy 1 then to the client. I was hoping to send
the replies directly to the client and not back thru the first proxy.
Is this possible? I am currently using the dispatcher module to send
the requests to the second proxy. I also noticed that the SIP packets
have a VIA header of the first proxies IP address when it reaches the
second proxy. I thought the record_route was causing this, so I moved
it after I send the request to the second proxy. Here is a small
snipet of my code:
if (is_method("REGISTER")) {
if (!ds_select_dst("2", "3")) {
sl_send_reply("503", "Rawr!!");
};
t_relay();
}
Thanks
Nathaniel
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