[OpenSER-Users] Problems trying to build an Active/Active OSer 1.3 cluster

[Stefan Sayer]

Hello,

Raúl Alexis Betancor Santana wrote:
> Hi all, I'm trying to build an Active/Active OpenSer 1.3 cluster with
> 2 nodes.
> 
> All it's working ok for the REGISTER messages throught the use of
> t_replicate and add_path, but I've problems with the INVITE messages.
> 
> Both servers share the same location table on a PostgreSQL Multimaster
> cluster (but that's irrelevant, the PostgreSQL cluster I mean...),
 > using db_mode = 2
just out of curiosity: if you have DB multimaster replication in place, 
why do you replicate REGISTERs on SIP level as well?

Stefan


> 
> An that's the logic I used:
> 
> - On REGISTER ->>
> 
>   - Auth Request
> 	 - NAT ?
> 		- add_path
> 	 - t_replicate(oser2)
> 
> - On INVITE ->>
> 
>   - Auth Request
>   - lookup
>   - Load prefs from DB
>   - relay
> 
> The problem I'm having is that the lookup function changes the RURI of
> the message on node1 BEFORE taking into account the "Path:" element
> present inside the AoR, so when the INVITE gets forwarded to node2
> (where the NATed UAC it's registered), node2 deny the relaying of the
> message because $rD of the RURI it's not local (remember that the RURI
> whas changed on node1).
> 
> Is there any way to know on node1 that the INVITE request MUST obey
> the "Path:" so I could to something like:
> 
> $old_ru = $ru
> lookup("location")
> if(path_exists())
> {
>  $ru = $old_ru
> }
> ...
> t_relay()
> 
> ??
> 
> Any other aproach ?
> 
> Best regards
> --
> Raúl Alexis Betancor Santana
> Dimensión Virtual S.L.
> 
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-- 
Stefan Sayer
VoIP Services

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