On Fri, Sep 28, 2018 at 10:07:09AM +0200, Ivan Ribakov wrote:
In a basic scenario of one2one call, I was able to make Kamailio to forward INVITE to callee over TCP by issuing a REGISTER request with ???transport=tcp??? parameter. Although it worked, as far as I understand that means all communication with the callee will be happening over TCP. I would like to be able to change transport dynamically so looking for a way to do that from config file.
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Any pointers as to how can I modify the outbound message transport? Do I need to use some extra modules or can it be achieved with a basic setup?
You can do this by explicitly calling t_relay_to_tcp() instead of t_relay().
For example I modified route[RELAY] for a specific destination that wants TCP for large INVITEs.
if($avp(dispatcherid)=="1" && $ml>1249) { if(!t_relay_to_tcp()) { if(!t_relay()) { sl_reply_error(); } } } else { if(!t_relay()) { sl_reply_error(); } }