Cloudflare sets a cookie with a max-age to see if you are a real browser or not. HTMLUnit fails on adding this cookie and therefore is detected.

Error:
"WARNING: Adding cookie 'cf_chl_2=; Max-Age=-99999999;' failed; reason: 'Negative 'max-age' attribute: -99999999'."

Could this be changed so that there is an option for allowing negative max age. A negative max age is for setting a cookie until the browser is closed, in practise,