import { readFileSync } from "fs";
import { createServer } from "https";
import { Server } from "engine.io";
import { Http3Server } from "@fails-components/webtransport";
// WARNING: the total length of the validity period MUST NOT exceed two weeks (https://w3c.github.io/webtransport/#custom-certificate-requirements)
const cert = readFileSync("/path/to/my/cert.pem");
const key = readFileSync("/path/to/my/key.pem");
const httpsServer = createServer({
  key,
  cert
});
httpsServer.listen(3000);
const engine = new Server({
  transports: ["polling", "websocket", "webtransport"] // WebTransport is not enabled by default
});
engine.attach(httpsServer);
const h3Server = new Http3Server({
  port: 3000,
  host: "0.0.0.0",
  secret: "changeit",
  cert,
  privKey: key,
});
(async () => {
  const stream = await h3Server.sessionStream("/engine.io/");
  const sessionReader = stream.getReader();
  while (true) {
    const { done, value } = await sessionReader.read();
    if (done) {
      break;
    }
    engine.onWebTransportSession(value);
  }
})();
h3Server.startServer();