How does the server differentiate a curl request from a nodejs request?

Question

JavaScript

There are two identical requests via http1.1 - one via curl, the other via node.js request.
The first one is successful and the server returns html, the second one is banned by the server and access denied is returned.
Curl variant :
https://pastebin.com/NfwDRJdu
Nodejs variant:
https://pastebin.com/maCFgkX4
Requests are sent from one American cloud server.
Why is this happening?

Answer 1

By user agent?