Free Code Camp Request Header Parser Microservice

express module
npm install express

Run the server. It will start listening to a specified port, or to port 3000 by default.
node server.js

In a browser navigate to http://localhost:3000/
(replace 3000 with appropriate port).

The microservice will return a JSON string containing the IP address, language and software information from the request header.

For example
{"ipaddress":"49.187.18.126","language":"en-US","software":"Windows NT 6.1; WOW64"}