The issue with dispatcher is that, in case of TCP transport, you cannot set the sending socket for the same reason.

Basically, each time a client TCP socket is open by Kamailio, the SO select the port, due to the lack of support for SO_REUSEPORT.

Cheers,

Federico

On Thu, Sep 8, 2016 at 4:33 PM, Daniel Tryba <d.tryba@pocos.nl> wrote:

On Thu, Sep 08, 2016 at 03:38:32PM +0300, Yuriy Gorlichenko wrote:
> I didnt thought about keepalive. I suppose it can help.

Better than using qualify in asterisk is to use the dispatcher module in
kamailio. The idea is the same, but more configurable and it is just 1
keepalive mechanisme so the amount of keepalives doesn't scale linear
with the number of registered users :)

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