Support domain names in SDP bodies

[QQ Q]

Is it possible with the latest version to support domain names in both the received SDP bodies and outgoing SDP bodies？

v=0 o=Node 1 1 IN IP4 rtp-server1.example.com s=Stream1 t=0 0 m=audio 5004 RTP/AVP 96 c=IN IP4 rtp-server1.example.com a=rtpmap:96 L24/48000/2 a=recvonly a=ptime:1 a=ts-refclk:ptp=IEEE1588-2008:01-23-45-67-89-AB-CD-EF:127 a=mediaclk:direct=0 a=sync-time:0

In version 12.3, an error is triggered: Error parsing SDP at offset 77: Error parsing c= line

[Richard Fuchs]

Domain names in c= lines are not supported.

Cheers

On 27/05/2024 21.17, QQ Q wrote:

Is it possible with the latest version to support domain names in both the received SDP bodies and outgoing SDP bodies？

v=0 o=Node 1 1 IN IP4 rtp-server1.example.com s=Stream1 t=0 0 m=audio 5004 RTP/AVP 96 c=IN IP4 rtp-server1.example.com a=rtpmap:96 L24/48000/2 a=recvonly a=ptime:1 a=ts-refclk:ptp=IEEE1588-2008:01-23-45-67-89-AB-CD-EF:127 a=mediaclk:direct=0 a=sync-time:0

In version 12.3, an error is triggered: Error parsing SDP at offset 77: Error parsing c= line --
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[QQ Q]

using  kamailio, I can use dns_query() to resolve the domain name to an ipv4 address. Is it possible to replace c=lines in rtpengine_offer() or rtpengine_answer()？

[Richard Fuchs]

On 28/05/2024 23.09, QQ Q wrote:
> using  kamailio, I can use dns_query() to resolve the domain name to
> an ipv4 address. Is it possible to replace c=lines in
> rtpengine_offer() or rtpengine_answer()？

You can probably use sdpops or textops to do a simple text replacement
in the SDP before passing it to rtpengine.

Another option is to put the address as `received-from=x.x.x.x` into the
flags and also set the `SIP-source-address` flag. Although it's possible
that the SDP would be rejected anyway as the c= line couldn't be parsed.

Cheers