Succeeding requests:
$ url='https://svn.tools.ietf.org/svn/tools/xml2rfc/trunk/cli/xml2rfc/data/xml2rfc.css'
$ curl "$url"
$ wget -qO - "$url"
$ python -c 'import webbrowser; webbrowser.open("'"$url"'", new=2)'
Failing request:
$ echo 'require("https").get("'"$url"'", res => console.info("statusCode:", res.statusCode, ";"));' | node
Output of failing request:
statusCode: 403 ;