serve-http-request-example.js

const http = require(‘http’);
const server = http.createServer((req, res) => {
  // `req` is an http.IncomingMessage, which is a Readable Stream.
  // `res` is an http.ServerResponse, which is a Writable Stream.
  let body = ‘’;
  // Get the data as utf 8 strings.
  // If an encoding is not set, Buffer objects will be received.
  req.setEncoding(‘utf8’);
  // Readable streams emit ‘data’ events once a listener is added.
  req.on(‘data’, chunk => {
  body += chunk;
});
// The ‘end’ event indicates that the entire body has been received.
req.on(‘end’, () => {
  try {
    const data = JSON.parse(body);
    // Write back something interesting to the user:
    res.write(typeof data);
    res.end();
  } catch (er) {
    // uh oh! bad json!
    res.statusCode = 400;
    return res.end(`error: ${er.message}`);
  }
  });
});

//Example taken from: Stream | Node.js v15.11.0 Documentation: https://nodejs.org/api/stream.html