<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <style type="text/css" style="display:none"></style> </head> <body dir="ltr" style="font-size:10pt;color:#000000;background-color:#FFFFFF;font-family:Calibri,Arial,Helvetica,sans-serif;"> <p></p> <p style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 13.3333px;"> On my quest, I've (belatedly) RTFM. It states:<br> </p> <p style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 13.3333px;"> <br> </p> <div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 13.3333px;"> Note that to modify the set of local candidates, a new stream </div> <div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 13.3333px;"> has to be created. For the remote party, this looks like a ICE</div> <div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 13.3333px;"> restart as well.<br> </div> <p style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 13.3333px;"> <br> </p> <p style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 13.3333px;"> If I understand this correctly, if I want *new* candidates, I should replace the nice stream (e.g., nice_agent_remove_stream, nice_agent_add_stream). Otherwise, I should re-signal the old candidates?<br> </p> <p><br> </p> <div id="Signature"> <div name="divtagdefaultwrapper" style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:; margin:0"> <font size="2"><span style="color:rgb(33,33,33); background-color:rgb(255,255,255)"><font style="">Zachary Hueras</font></span> </font> <div style=""><font size="2" style="">Principal Software Engineer<br style="color:rgb(33,33,33); background-color:rgb(255,255,255)"> <span style="color:rgb(33,33,33); background-color:rgb(255,255,255)">AMD Global Telemedicine, Inc.</span><br style="color:rgb(33,33,33); background-color:rgb(255,255,255)"> <span style="color:rgb(33,33,33); background-color:rgb(255,255,255)">Cell : 978-660-3812</span><br style="color:rgb(33,33,33); background-color:rgb(255,255,255)"> <span style="color:rgb(33,33,33); background-color:rgb(255,255,255)">zhueras@amdtelemedicine.com</span><br style="color:rgb(33,33,33); background-color:rgb(255,255,255)"> <a tabindex="0" href="http://www.amdtelemedicine.com/" target="_blank" style="background-color:rgb(255,255,255)" id="NoLP">www.amdtelemedicine.com</a><span style="color:rgb(33,33,33); background-color:rgb(255,255,255)"> | Follow us on LinkedIn</span></font></div> </div> </div> <div dir="ltr" style="font-size:10pt; color:#000000; background-color:#FFFFFF; font-family:Calibri,Arial,Helvetica,sans-serif"> <hr tabindex="-1" style="display:inline-block; width:98%"> <div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> nice <nice-bounces@lists.freedesktop.org> on behalf of Zachary Hueras <ZHueras@amdtelemedicine.com><br> <b>Sent:</b> Monday, December 14, 2020 2:23 AM<br> <b>To:</b> nice@lists.freedesktop.org<br> <b>Subject:</b> [libnice] nice_agent_restart_stream: proper usage and local candidate gathering with gstreamer</font> <div> </div> </div> <div> <p>Hello,<br> </p> <p><br> I'm trying to implement ICE restarts with gstreamer's webrtcbin. The thing I can't seem to figure out is how to get libnice to gather local candidates again. Or is this not supposed to happen?<br> </p> <p><br> </p> <p>As it stands, I:</p> <p><br> </p> <p>- successfully generate a session description with new ufrag and pwd<br> </p> <p>- set-local-description on webrtcbin<br> </p> <p>- detect the changed credentials in GstWebRTCICEStream<br> </p> <p><span style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:13.3333px; background-color:rgb(255,255,255)">- invoke nice_agent_set_local_credentials</span><span style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:13.3333px; background-color:rgb(255,255,255)"></span><br> </p> <p>- invoke nice_agent_restart_stream<br> </p> <p>- incidentally invoke nice_agent_gather_candidates (again)<br> </p> <p><br> </p> <p>However, no candidates appear to be added after this point. Is there something I'm missing?<br> </p> <p><br> </p> <p>When I connect this to a simple-peer based WebRTC application, and restart a successful connection, only the simple-peer side sends new candidates, and the connection eventually progresses to "disconnected" and ultimately "failed". <span style="font-size:10pt">I'm not sure if I'm just missing something from the gstreamer side, or if libnice is supposed to provide new candidates after a restart.</span></p> <p><span style="font-size:10pt"><br> </span></p> <p><span style="font-size:10pt">Any and all guidance is welcome.</span></p> <p><br> </p> <div id="Signature"> <div name="divtagdefaultwrapper" style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:; margin:0"> <font size="2"><span style="color:rgb(33,33,33); background-color:rgb(255,255,255)"><font style="">Zachary Hueras</font></span> </font> <div style=""><font size="2" style="">Principal Software Engineer<br style="color:rgb(33,33,33); background-color:rgb(255,255,255)"> <span style="color:rgb(33,33,33); background-color:rgb(255,255,255)">AMD Global Telemedicine, Inc.</span><br style="color:rgb(33,33,33); background-color:rgb(255,255,255)"> <span style="color:rgb(33,33,33); background-color:rgb(255,255,255)">Cell : 978-660-3812</span><br style="color:rgb(33,33,33); background-color:rgb(255,255,255)"> <span style="color:rgb(33,33,33); background-color:rgb(255,255,255)">zhueras@amdtelemedicine.com</span><br style="color:rgb(33,33,33); background-color:rgb(255,255,255)"> <a tabindex="0" href="http://www.amdtelemedicine.com/" target="_blank" id="NoLP" style="background-color:rgb(255,255,255)">www.amdtelemedicine.com</a><span style="color:rgb(33,33,33); background-color:rgb(255,255,255)"> | Follow us on LinkedIn</span></font></div> </div> </div> </div> </div> </body> </html>