I have added "listen=tcp:192.168.1.104" to the openser.cfg and when openser starts up, it shows that it is listening on both tcp and udp. However, I am still getting "ERROR:tm:update_uac_dst: failed to fwd to af 2, proto 2 (no corresponding listening socket)" I think the problem is with the ";transport=tcp" string that next_gw() is appending at the end. Is there anyway to fix it?
Are your OpenSer listening in TCP? or just UDP? You need adding a "listen" in TCP to send TCP request.