Draft: webrtc: backport datachannel fix in 1.16 branch
Fixes #1360 (closed)
** (python3:20643): CRITICAL **: 21:14:54.492: _data_channel_have_sample: assertion 'channel->sctp_transport != NULL' failed
Fixes #1360 (closed)
** (python3:20643): CRITICAL **: 21:14:54.492: _data_channel_have_sample: assertion 'channel->sctp_transport != NULL' failed