RTCPeerConnection: sctp property

const peerConnection = new RTCPeerConnection();
const channel = peerConnection.createDataChannel("Mydata");
channel.onopen = (event) => {
  channel.send("sending a message");
};
channel.onmessage = (event) => {
  console.log(event.data);
};
// Determine the largest message size that can be sent
const sctp = peerConnection.sctp;
const maxMessageSize = sctp.maxMessageSize;