Web app that just logs all information for any incoming request.
Why not?
2019-11-24T11:08:29.8670574+02:00 [INF] {"method":"GET","protocol":"HTTP/1.1","url":"yourdomain.com/","contentLength":null,"ContentType":null,"body":"","headers":{"Accept":["text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3"],"Accept-Encoding":["gzip, deflate"],"Accept-Language":["en-US,en;q=0.9,af;q=0.8"],"Connection":["keep-alive"],"Host":["yourdomain.com"],"User-Agent":["Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36"],"DNT":["1"],"Upgrade-Insecure-Requests":["1"]} (1955af62)