Hello,

to be sure, it is 5.0.1 build from last night or quite recent? There were some fixes in the past days to topos module.

Cheers,
Daniel

Hi Daniel

Sorry for the delayed response to this, the ACK is for a 200OK yes and the problem still persists in latest 4.4 and the 5.0.1 nightly build.

I have all DB entries/kam logs/pcap files.

If you check the attached pcap, 192.168.70.70 and 192.168.252.70 are the same instance of Kamailio, it is being used to bridge the 2 networks.

Frame 34 shows the 200OK with lots of Record-Route etc, and frame 35 shows topos in action.

However the ACK that is relayed in Frame 38 seems to be missing all the Route information that was supplied in the 200OK, this causes the ACK to be relayed directly to the Contact, breaking the proxy chain.

Pete

On 22 February 2017 at 18:31, Daniel-Constantin Mierla <miconda@gmail.com> wrote:

Hello,

is the ACK for 200ok? Or an ack for a negative response?

Can you get a pcap for such situation with all messages related to the call?

Cheers,
Daniel

On 22/02/2017 17:20, Pete Kelly wrote:

Hi

I am using the topos module when bridging 2 networks with Kamailio.

The INVITE/200OK part of the transaction is working fine (i.e. the Contact on both sides matches correctly the corresponding network).

However when the ACK is sent into Kamailio, instead of realising the next hop is myself and skipping it, Kamailio is sending the ACK directly to itself as a packet, causing the call setup to break.

Does anyone have any advice for this situation?

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Daniel-Constantin Mierla
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-- 
Daniel-Constantin Mierla
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio Advanced Training - May 22-24 (USA) - www.asipto.com
Kamailio World Conference - May 8-10, 2017 - www.kamailioworld.com