Am Montag, 8. Oktober 2018, 11:59:37 CEST schrieb Roman Romanchenko: > I have an issue with SDP from Kamailio side in the following scenario: > simple call from A to B. When B answers a call and sends '200 OK' to A, A > delays ACK for a while, so '200 OK' re-transmission happens. > > After the fourth try to re-send '200 OK' towards A, Kamailio changes SDP > (specifically connection information 'c', IP address become address of A > instead of proxy IP as it was in the previous attempts). At some point A > sends ACK and call is established, but last received '200 OK' has invalid > SDP and it prevents successful media establishment. > > I wonder if there any re-transmission counter or whatever what can affect > this scenario and change SDP?
Hello Roman, Kamailio should not change your SDP - unless you use the sdpops module or use a similar transformation in the configuration on the SDP in the SIP message. If the above is not the case, I can only think that this is a strange bug. We would need more information in this case. Best regards, Henning -- Henning Westerholt - https://skalatan.de/blog/ Kamailio security assessment - https://skalatan.de/de/assessment _______________________________________________ Kamailio (SER) - Users Mailing List [email protected] https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
