Simple NodeJS http server that prints requests to stdout

httprint.mjs

// Usage:
//    node httprint.mjs [PORT]
//
// The default port is 3000.
// Prints to stdout the request method, url, headers and body.
// Always returns 200 with an empty JSON object as the body and application/json as the content type.

import { createServer } from "node:http";

const port = process.argv[2] || 3000;
createServer()
  .listen(port)
  .on("request", (req, res) => {
    console.log(req.method, req.url);
    console.log(JSON.stringify(req.headers));
    let hasBody = false;
    req
      .on("data", (chunk) => {
        hasBody = true;
        process.stdout.write(chunk);
      })
      .on("end", () => {
        console.log((hasBody ? "\n" : "") + "----");
        res.writeHead(200, { "Content-Type": "application/json" });
        res.write("{}");
        res.end();
      });
  })
  .on("listening", () => console.log(`Listening on http://localhost:${port}`));