Re: [reSIProcate-users] NAT issue with INVITEs from secondary proxy server

[Nauman Sulaiman <nauman762-home@xxxxxxxxxxx>]

Thanks Scott, using outbound is fine but it doesn't appear DUM allows for a backup proxy.

There is only the one outbound proxy setting on the profile. 

Or the does the application need to manage this somehow?

On Friday, 12 June 2015, 15:44, Scott Godin <sgodin@xxxxxxxxxxxxxxx> wrote:

resip only sends keepalives to destinations that we send registrations or dialogs (ie: INVITES, etc.) to.

For NAT traversal - RFC5626 (Outbound) recommends you register to both a primary and back up registrar.  

Outside of outbound I'm not sure off hand what the best / recommended solution for your problem would be.  I would be interested in hearing from others how they solved this problem.

Scott

On Fri, Jun 12, 2015 at 7:09 AM, Nauman Sulaiman <nauman762-home@xxxxxxxxxxx> wrote:

Hi, 

We have a case where our resip UA registers with a proxy server which has 

two ip addresses, this is for load balancing. We've noticed that incoming calls

can sometimes be originated from the secondary server whilst the regisration 

was done to the primary server. The UDP keepalives are only sent to the primary

servers so incoming INVITES from the secondary server are dropped by the

firewall. 

Should resip be sending UDP keepalives to both proxy servers which are resolved

by DNS SRV, I think its only sending them to one. Or is there some other way we

should be handling this?

Thanks

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