This is an implementation of the Request Header Parser backend development project on Free Code Camp.
The app is functionally similar to https://cryptic-ridge-9197.herokuapp.com/api/whoami/.
I can get the IP address, language and operating system for my browser.
https://requestheaderparser.herokuapp.com/api/whoami/
{
"ipaddress": "127.0.0.1",
"language": "en",
"software": "X11; Linux x86_64"
}