Simple node.js (v5.6.x) server to inspect HTTP requests.

server.js

'use strict'

const http = require('http');

console.log(`Server listening at port ${process.env.PORT || 8080}`);

http.createServer((request, response) => {
    
  let headers = request.headers;
  let method = request.method;
  let url = request.url;
  let body = []; 
  
  request.on('error', (err) => {
    console.error(err);
  }).on('data', (chunk) => {
    body.push(chunk);
  }).on('end', () => {
    body = Buffer.concat(body).toString();
    
    console.log(`\nREQUEST:  ${method}  ${url}\n`); 
       
    let prettyHeaders = '';
    for(let h in headers){
        prettyHeaders += h + ': ' + headers[h] + '\n';
    }
    console.log(`HEADERS\n\n${prettyHeaders}\n\n`);  
    console.log(`BODY\n\n${body.toString()}\n`);
    console.log('\n======================\n');
    
    response.statusCode = 200;
    response.end();
  });
}).listen(process.env.PORT || 8080); // DEFAULT: listening on port 8080.