Hello all.  As they say in radio, “long time listener, first time caller”

Anyway, I am having trouble getting past the following road block and any help 
would be greatly appreciated.

Kamailio version is 5.4.3 

When attempting to use dispatcher to send OPTIONS packets to several TLS 
destinations, the packets are leaving the Kamailio server on random ports.  
This is a problem because the servers I am sending the OPTIONS to (MS Teams) 
are enforcing rport so the responses are returned to a port that Kamailio is 
not listening on.  I have tried to force the socket in the event route 
(relevant parts of snippet below) but it does not appear to help.  I should 
also mention that I am not behind NAT and the TLS socket is specified in the 
dispatcher attrs. 

event_route[tm:local-request] {
    sip_trace();


    $fs = “tls:**ip-address**:5061”;


}

I have used Kamailio as a TLS server for many projects, but this is my first 
time as a client.  I am sure I am missing something.

- Charles




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