Hi all!
We have a WebRTC user-agent (using sip.js) that is giving me headache.
When a different user-agent calls this user-agent, we frequently see Asterisk
generating SIP INFO messages with
Content-Type: application/media_control+xml
Content-Length: 178
<?xml version="1.0" encoding="utf-8" ?>
<media_control>
<vc_primitive>
<to_encoder>
<picture_fast_update/>
</to_encoder>
</vc_primitive>
</media_control>
In the payload, that is sent from Asterisk to the caller UA (the WebRTC client
is the callee).
While this does not do any harm usually, I have no clue yet what causes
Asterisk to generate these INFO messages.
I do know what they are for (https://datatracker.ietf.org/doc/html/rfc5168),
but not why Asterisk is generating those or what might be the trigger.
Anyone have any hint?
Thanks and best regards
FLORIAN FLOIMAIR
Symphony Cloud Services (1568)
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