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<p class="MsoNormal"><span lang="EN-US">Hi all!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">We have a WebRTC user-agent (using sip.js) that is giving me headache.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">When a different user-agent calls this user-agent, we frequently see Asterisk generating SIP INFO messages with<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:Consolas;color:#333333;background:white;mso-fareast-language:DE">Content-Type: application/media_control+xml<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:Consolas;color:#333333;background:white;mso-fareast-language:DE">Content-Length: 178<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:Consolas;color:#333333;background:white;mso-fareast-language:DE"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:Consolas;color:#333333;background:white;mso-fareast-language:DE"><?xml version="1.0" encoding="utf-8" ?><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:Consolas;color:#333333;background:white;mso-fareast-language:DE"><media_control><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:Consolas;color:#333333;background:white;mso-fareast-language:DE"> <vc_primitive><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:Consolas;color:#333333;background:white;mso-fareast-language:DE"> <to_encoder><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:Consolas;color:#333333;background:white;mso-fareast-language:DE"> <picture_fast_update/><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:Consolas;color:#333333;background:white;mso-fareast-language:DE"> </to_encoder><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:Consolas;color:#333333;background:white;mso-fareast-language:DE"></vc_primitive><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:Consolas;color:#333333;background:white;mso-fareast-language:DE"></media_control></span><span lang="EN-US" style="font-family:Consolas;mso-fareast-language:DE"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">In the payload, that is sent from Asterisk to the caller UA (the WebRTC client is the callee).<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">While this does not do any harm usually, I have no clue yet what causes Asterisk to generate these INFO messages.<br>
I do know what they are for (<a href="https://datatracker.ietf.org/doc/html/rfc5168">https://datatracker.ietf.org/doc/html/rfc5168</a>), but not why Asterisk is generating those or what might be the trigger.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Anyone have any hint?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks and best regards<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.5pt;font-family:"Segoe UI",sans-serif;color:#006ED2;background:white;mso-fareast-language:DE">FLORIAN FLOIMAIR</span></b><b><span lang="EN-US" style="font-size:10.5pt;font-family:"Segoe UI",sans-serif;color:#172B4D;background:white;mso-fareast-language:DE"><br>
</span></b><span lang="EN-US" style="font-size:10.5pt;font-family:"Segoe UI",sans-serif;color:#172B4D;background:white;mso-fareast-language:DE">Symphony Cloud Services (1568)</span><span lang="EN-US" style="mso-fareast-language:DE"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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