On 12/10/2023 09.02, [EXT] Leonardo Arena via sr-users wrote:
I've opened the captured traffic with Wireshark and I've found out that Kamailio is actually forwarding the call with a double SDP header. ngrep was showing only a partial header. I think this happens because when forwarding the call I use rtpengine_offer() and not rtpengine_manage(). I've tried using rtpengine_manage() and I get only one SDP header but with the (wrong) private IP address. I've tried also rtpengine_delete() before rtpengine_offer() but there's always a double header. Ideas? Still digging..
Duplicated SDPs in combination with rtpengine are usually the result of manipulating the SDP multiple times, e.g. using sdpops first and then passing the SDP to rtpengine (or the other way around) without msg_apply_changes() in between, or perhaps invoking the rtpengine methods multiple times within the same script run.
Cheers