The User-Agent header field is set by default to"Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:89.0) Gecko/20100101 Firefox/89.0", it is sent with all Http calls.
However, if you manually set a User-Agent header field for specific HTTP requests (via the Http.headers table : https://luart.org/doc/net/Http-headers.html), it should take precedence over the default one provided by default for the next request.
