[Users] Replication ACK problem

Daniel-Constantin Mierla daniel at voice-system.ro
Thu Oct 26 10:30:12 CEST 2006


Hello,
Maybe you can post the ACK to mailing list to see if it is something 
wrong with it. ACK should need no replication, in this scenario and 
should be routed based on loose_route(), because they are for 200OK.

Cheers,
Daniel


On 10/25/06 16:45, Dioris Moreno wrote:
>
> Hi everybody
>
> I have a working installation of OpenSER (Proxy A). In this 
> installation, the ACK messages are delivery without any problem 
> through loose_route() and t_relay(). Then, I installed a second 
> OpenSER proxy (Proxy B) and configure both servers to replicate 
> REGISTER messages with t_replicate(), and it works fine. I made a lot 
> of captures to check the replication process was working fine and also 
> to check the NAT pings; each proxy takes care of the NATed clients it 
> receives sending OPTIONS message periodically. I’m using mediaproxy to 
> support NATed clients; to avoid each proxy starting a media session 
> when it find a NATed client I used the following rule: a proxy 
> receiving messages from another proxy never starts a media session, 
> the proxy that sends the message takes care of that.
>
> Having two registered clients (Client A in Proxy A and Client B in 
> Proxy B), I start making calls from Client A to Client B, but I found 
> something in the captures. All the messages flow correctly, except the 
> final ACK message sent by Client A to Client B. Proxy A receives this 
> message and pass it to Proxy B, but Proxy B never deliver it to Client 
> B. Of course, the media session never starts. I was searching info 
> about this situation and I found an email respond from Bogdan about 
> using t_newtran() to process ACK messages, I tried, but it didn’t work.
>
> Has anybody ever had the same problem? Is there a special way to deal 
> with ACK messages when we’re working with replicated proxies?
>
> I’ll appreciate any help.
>
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>
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