195667 2019-03-13 02:51:42 -0700 unified plan: ice connection state goes to disconnected when adding a new m-line 2019-06-10 08:59:09 -0700 1 1 1 Unclassified WebKit WebRTC Safari Technology Preview Mac macOS 10.14 RESOLVED CONFIGURATION CHANGED P2 Normal --- 1 argggh webkit-unassigned youennf oldest_to_newest 1515924 0 argggh 2019-03-13 02:51:42 -0700 Safari TP 77 seems to exhibit the same (incorrect) behavior as Chrome when adding new m-lines to an existing peer connection: https://bugs.chromium.org/p/chromium/issues/detail?id=909684 To Reproduce: * Go to https://webrtc.github.io/samples/src/content/peerconnection/pc1/ * Make a call (having Develop -> Experimental Features -> WebRTC Unified Plan enabled) * Paste into the console: navigator.mediaDevices.getDisplayMedia({video: true}).then(stream => { pc1.addTrack(stream.getTracks()[0], stream); pc1.createOffer().then(offer => pc1.setLocalDescription(offer)); }); * Observe that console output indicates that ICE state goes to "disconnected" * Repeat having Unified Plan disabled, observing that the same does not happen in this scenario. 1543343 1 youennf 2019-06-10 08:59:09 -0700 Unified plan is on by default.