28 Sep
2018
28 Sep
'18
4:40 a.m.
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.
...
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();
}
}