1 2require('http').createServer(function (req, res) { 3 let body = ''; 4 req.on('data', chunk => { 5 body += chunk.toString(); 6 }); 7 req.on('end', () => { 8 res.setHeader('Request-Method', req.method); 9 res.setHeader('Request-Uri', req.url); 10 res.setHeader('Server-Protocol', req.httpVersion); 11 res.setHeader('Request-Raw-Headers', req.rawHeaders.join()); 12 res.setHeader('Content-Length', Buffer.byteLength(body)); 13 res.setHeader('Content-Type', req.headers['content-type']); 14 res.setHeader('Custom-Header', req.headers['custom-header']); 15 res.setHeader('Http-Host', req.headers['host']); 16 res.writeHead(200, {}).end(body); 17 }); 18}).listen(8080); 19