sendWebrtcConn = (webrtcConn, encoder) => {
  log(
    "send message to ",
    logging.BOLD,
    webrtcConn.remotePeerId,
    logging.UNBOLD,
    logging.GREY,
    " (",
    webrtcConn.room.name,
    ")",
    logging.UNCOLOR
  );
  try {
    webrtcConn.peer.send(encoding.toUint8Array(encoder));
  } catch (e) {}
}
@param {WebrtcConn} webrtcConn
@param {encoding.Encoder} encoder