Hi all,
I have Kamailio acting as SBC for a few media servers and I am writing sipp
scenarios for basic funtionality behavior testing.
Things work fine except that on an aunthenticated INVITE simulating an
outbound call I see lots of retransmissions for the last 200OK and ACK. The
reason being that the SBC seem to expect the UA to change the RURI on that
last ACK to the IP of the media server and therefore when it receives the
ACK with its own IP it doesn't forward the ACK to the media server,
resulting in multiple retransmissions.
Whats would be the recommended way to deal with this?
SIPp UAC Remote
|(1) INVITE |
|---------------------> |
|(2) 100 (optional) |
|<--------------------- |
|(3) 180(3) (optional) |
|<--------------------- |
|(4) 407 |
|<--------------------- |
|(5) ACK |
|---------------------> |
|(6) INVITE + auth |
|---------------------> |
|(7) 100 (optional) |
|<--------------------- |
|(8) 180(3) (optional) |
|<--------------------- |
|(9) 200 OK |
|<--------------------- |
|(10) ACK |
|---------------------> |
| |
|(11) PAUSE |
------------------------------------------------------------------------------
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