[OpenSIPS-Users] ACK looping issue with end-point co-located with OpenSIPS

Flavio Goncalves flavio at asteriskguide.com
Tue Oct 16 03:42:57 CEST 2012


Hi Daniel,

I don't know exactly why, but it doesn't work as far as I know.
loose_route() does not work in the same server with different ports. I have
had the same problem and the solution I used was to add an alias with
another ip address in the same machine for the media server.

Flavio E. Goncalves




2012/10/15 Daniel Eiland <daniel.eiland at gmail.com>

> Hi folks,
>
> I've got an issue with ACK messages being looped when they are sent to an
> endpoint that is co-located with my OpenSIPS proxy.
>
> I've got OpenSIPS located on server A @ port 5060 and two conference
> endpoints: C01 on server A @ port 5070 and C02 on a separate server.
>
> When my client calls into C01, the ACK message is continually routed by
> OpenSIPS back into itself instead of the conference endpoint listening on
> port 5070.  This doesn't happened when I call into C02, OpenSIPS properly
> routes it to the right destination.
>
> When I compare the two ACKs, they are fairly similar and when I looked at
> some OpenSIPS logs both messages are being routed in a similar fashion
> namely loose_route is true.  The only difference (which I'm sure if the
> problem, I'm just not sure why) is that the ACK to C01 has Destination User
> ($du) of 192.168.117.4 while the ACK to C02 has a $du of NULL.
>
> If anyone has any suggestions, I'd be grateful.
>
> Thanks,
> Daniel
>
> Also here are the two ACKs for comparison:
>
> ACK sip:C01 at 192.168.117.4:5070;transport=udp SIP/2.0
> Via: SIP/2.0/UDP
> QWE.RTY.XYZ.ABC:2453;rport;branch=z9hG4bKPjca04290517874935af64a839e6bf9701
> Max-Forwards: 70
> From: "deiland" <sip:1001 at 192.168.117.4
> >;tag=d02a111d4a064b05a7cf987b006bd001
> To: <sip:C01 at 192.168.117.4>;tag=ma94e0688avFj
> Call-ID: 5c35c0a5dcb442a9afd324c988bd0a3c
> CSeq: 24503 ACK
> Route: <sip:192.168.117.4;lr>
> User-Agent: Blink 0.2.7 (Windows)
> Content-Length:  0
>
>
> ACK sip:C02 at 192.168.155.211:5070;transport=udp SIP/2.0
> Via: SIP/2.0/UDP
> QWE.RTY.XYZ.ABC:2122;rport;branch=z9hG4bKPj5318936898454066944aadf64ad846d0
> Max-Forwards: 70
> From: "deiland" <sip:1001 at 192.168.117.4
> >;tag=ff6fb0856e264e7f96601529148bb206
> To: <sip:C02 at 192.168.117.4>;tag=54aZ48KZ7a9Xj
> Call-ID: afddb9bea6714f95bd84dff2159e2b14
> CSeq: 11988 ACK
> Route: <sip:192.168.117.4;lr>
> User-Agent: Blink 0.2.7 (Windows)
> Content-Length:  0
>
>
>
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