Hi,

Our set up:

UA1 -----                                                                              ------  Proxy1

                   \                                                                        /

                       Loadbalancer (dispatcher module)

                   /                                                                        \

UA2-----                                                                               ------  Proxy2

Both proxies have registrar module loaded and share the same database.

REGISTERs work fine.

The problem is this:

                    TLS                                        TCP

UA1  ----------------------> LB --------------------> Proxy

            INVITE(to UA2)                  INVITE(to UA2)

                  TLS                       TCP

UA1  <------------- LB <------------- Proxy

                                          100 Trying

                  TLS                               TCP

UA1  <------------- LB <----------------------- Proxy

                                             INVITE(to UA2)

                      TLS                                                TCP

UA1  <----------------------- LB <----------------------- Proxy

                100 Trying                    

All above worked fine. Below is what’s expected but never happened:

                      TLS                                                TCP

UA2  <----------------------- LB <----------------------- Proxy

                INVITE(to UA2)

We’d like the LB to reuse the TLS connection initiated by UA2. But LB can’t find an open connection and tries to start a new TLS connection. The new connection fails.

UAs are not behind NAT at the moment but will be in the future.

Tried this approaches on LB:

route(ADD_CONTACT_ALIAS);

If (not from proxy)

                t_relay();

else

                do load balancing

No luck.

Any help is appreciated.

Regards,

Allen