[OpenSIPS-Users] How to Keep OpenSIPS in reverse path

[Muhammad Naseer Bhatti]

So the call hits the proxy and dispatched to the media server. Media server
makes the gateway selection and now need to send the call to the provider.
Instead of the signaling to be sent directly from the media server and the
provider I and trying to pass the signaling  back through the proxy so the
outgoing connections to the provider will be seen by the proxy IP address
not the media server. Both the proxy and media servers are not behind nat.

-- 

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From: Răzvan Crainea <razvan at opensips.org> <razvan at opensips.org>
Reply: OpenSIPS users mailling list <users at lists.opensips.org>
<users at lists.opensips.org>
Date: December 15, 2016 at 12:55:18 PM
To: users at lists.opensips.org <users at lists.opensips.org>
<users at lists.opensips.org>
Subject:  Re: [OpenSIPS-Users] How to Keep OpenSIPS in reverse path

I am sorry, but I don't understand your call flow. Please present here the
call flow you have now, and the expected one.

PS: not sure why you are looking at the Via header, that's only used for
replies, not for requests.

Best regards,

Răzvan Crainea
OpenSIPS Solutionswww.opensips-solutions.com

On 12/14/2016 07:53 PM, Muhammad Naseer Bhatti wrote:


Hi Razvan,
I am not using REGISTER, but I guess add_path() wont’ work for me, I am
using record_route() for the INVITE though.

…
if (is_method("INVITE")) {
record_route();
}
…

On the media server I see the Via header,

   INVITE sip:6054775550 at 64.58.228.102:3333 SIP/2.0
   Record-Route: <sip:64.58.228.102:3333
;lr=on;ftag=CT60RBHd.BRAp6IAQSKwtAN3Mjj2bPKL>
   Via: SIP/2.0/UDP 64.58.228.102:3333
;branch=z9hG4bK31d2.b8fe57fe9c7545e354a93f391a1d0704.0
   Via: SIP/2.0/UDP 172.16.0.101:52207
;received=172.16.0.101;rport=52207;branch=z9hG4bKPjyGufepGSH2zMGfp6J.CIKvEgl87YIPFN

but when the media server sends

recv 1432 bytes from udp/[64.58.228.89]:3333 at 12:44:12.709234:
   ------------------------------------------------------------------------
   INVITE sip:6054775550 at 23.29.112.144:15080 SIP/2.0
   Via: SIP/2.0/UDP 64.58.228.89:3333;rport;branch=z9hG4bKF8jFHt4maUBeQ
   Max-Forwards: 68
   From: "Naseer" <sip:1234 at 64.58.228.89>;tag=45yZ9S13S47HF

Not sure what I am doing wrong. Here is my script,
http://pastebin.com/Cmnxnf4c


-- 

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From: Răzvan Crainea <razvan at opensips.org> <razvan at opensips.org>
Reply: OpenSIPS users mailling list <users at lists.opensips.org>
<users at lists.opensips.org>
Date: December 14, 2016 at 8:34:22 PM
To: users at lists.opensips.org <users at lists.opensips.org>
<users at lists.opensips.org>
Subject:  Re: [OpenSIPS-Users] How to Keep OpenSIPS in reverse path

Hi, Muhammad!

The add_path() function should only be called on REGISTER messages, and it
adds a Path header (not a Via). Do you see this header in your REGISTER
message?
For sequential requests, you should use the record_route() mechanism.

Best regards,

Răzvan Crainea
OpenSIPS Solutionswww.opensips-solutions.com

On 12/14/2016 06:39 PM, Muhammad Naseer Bhatti wrote:


I am using dispatcher to distribute calls to multiple media servers, but
also want the reply to go through OpenSIPS. So far I have tried add_path()
function which add the Via header but FreeSWITCH sends the call directly to
the gateway not sending the call back through OpenSIPS. I am not sure if I
am doing something wrong, how can I achieve that?


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