ondatachannel a) doesn't fire on the peer who called createDataChannel, and b) doesn't mean the channel is actually ready for use; need onopen for that
ondatachannel a) doesn't fire on the peer who called createDataChannel,
and b) doesn't mean the channel is actually ready for use; need onopen
for that

wdebeaum/svg-whiteboard,wdebeaum/svg-whiteboard