node-media-server/src/vendor/http2-express/initHttp2Express.js

A Node.js implementation of RTMP Server

const initHttp2Express = (app) => (req, res, next) => {
  if (app.enabled("x-powered-by")) {
    res.setHeader("X-Powered-By", "HTTP/2 Express (http2-express)");
  }
  req.res = res;
  res.req = req;
  req.next = next;

  const alpnProtocol = req.httpVersion === "2.0" ? req.stream.session.alpnProtocol : "h1";

  if (alpnProtocol && (alpnProtocol === "h2" || alpnProtocol === "h2c")) {
    Object.setPrototypeOf(req, app.http2Request);
    Object.setPrototypeOf(res, app.http2Response);
  } else {
    Object.setPrototypeOf(req, app.request);
    Object.setPrototypeOf(res, app.response);
  }

  res.locals = res.locals || Object.create(null);
  next();
};

module.exports = initHttp2Express;