RTCSessionDescription(sdp='v=0\r\no=- 3814293272 3814293272 IN IP4 0.0.0.0\r\ns=-\r\nt=0 0\r\na=group:BUNDLE 0\r\na=msid-semantic:WMS *\r\nm=video 9 UDP/TLS/RTP/SAVPF 96 97 102 121 125 107\r\nc=IN IP4 0.0.0.0\r\na=sendonly\r\na=extmap:2 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time\r\na=extmap:9 urn:ietf:params:rtp-hdrext:sdes:mid\r\na=mid:0\r\na=msid:977d94a4-f9cb-4fec-8276-cce2d86a91ca c9f9986f-c51c-4488-91bf-c574c8e9de4c\r\na=rtcp:9 IN IP4 0.0.0.0\r\na=rtcp-mux\r\na=ssrc-group:FID 3993481588 1511147880\r\na=ssrc:3993481588 cname:1e466b92-ae4f-46f9-8a4d-dc61b7c6c20a\r\na=ssrc:1511147880 cname:1e466b92-ae4f-46f9-8a4d-dc61b7c6c20a\r\na=rtpmap:96 VP8/90000\r\na=rtcp-fb:96 nack\r\na=rtcp-fb:96 nack pli\r\na=rtcp-fb:96 goog-remb\r\na=rtpmap:97 rtx/90000\r\na=fmtp:97 apt=96\r\na=rtpmap:102 H264/90000\r\na=rtcp-fb:102 nack\r\na=rtcp-fb:102 nack pli\r\na=rtcp-fb:102 goog-remb\r\na=fmtp:102 packetization-mode=1;level-asymmetry-allowed=1;profile-level-id=42001f\r\na=rtpmap:121 rtx/90000\r\na=fmtp:121 apt=102\r\na=rtpmap:125 H264/90000\r\na=rtcp-fb:125 nack\r\na=rtcp-fb:125 nack pli\r\na=rtcp-fb:125 goog-remb\r\na=fmtp:125 packetization-mode=1;level-asymmetry-allowed=1;profile-level-id=42e01f\r\na=rtpmap:107 rtx/90000\r\na=fmtp:107 apt=125\r\na=ice-ufrag:cNsc\r\na=ice-pwd:VMfoDhCzEu56IYZMQ1aw8P\r\na=fingerprint:sha-256 A4:7F:99:62:0E:5A:C3:C8:C7:70:4D:4A:71:62:B6:51:E6:AB:55:C1:48:DF:F3:0C:5B:CF:A7:FB:2C:30:EE:8F\r\na=setup:active\r\n', type='answer')
ICE connection state is checking