Erich Nahum wrote:
Thanks to Bogdan, who pointed out that my UAC was not
behaving properly.
Having solved that problem in sipp, I now have a new issue. The UAC
is opening a TCP connection to the proxy, but the proxy then forwards
the INVITE to the UAS over UDP. I'm using the stock openser.cfg file.
Any suggestions?
If a user agents wants to receive messages via TCP, it has to REGISTER
with with a contact which includes the transport=tcp parameter. If there
is no transport parameter, UDP is the default (according to the RFCs).
You can force TCP by using t_relay_to_tcp instead of t_relay.
regards
klaus