hijack.js

//hijack.js
const http = require("http")

function hijack() {
  override(http)
}

function requestLogger(req) {
  const log = {
    method: req.method || "GET",
    host: req.host || req.hostname || "localhost",
    port: req.port || "443",
    path: req.pathname || req.path || "/",
    headers: req.headers || {},
  }
  console.log('Request:');
  console.log(log);
}

function responseLogger(response, body) {
  const log = {
    statusCode: response.statusCode,
    headers: response.headers,
    message: response.statusMessage,
    body
  };
  console.log('Response:')
  console.log(log);
}

function override(module) {
  const original = module.request

  function wrapper(outgoing) {
    const req = original.apply(this, arguments);
    const emit = req.emit;
    let body = '';

    req.emit = function (eventName, response) {
      switch (eventName) {
        case 'response': {
          response.on('data', d => {
            body += d;
          });

          response.on('end', () => {
            responseLogger(response, body);
          });
        }
      }
      return emit.apply(this, arguments);
    }

    requestLogger(outgoing);
    return req
  }

  module.request = wrapper

}

module.exports = hijack;