Status: 308 Unauthorized, See Other
Vary: Cookie
Cache-Control: no-cache
WWW-Authenticate: Cookie realm="test02@ltgt.net";cookie-name="AUTHORIZED"
Location: http://broyer.info/tests/http-cookie-auth/test02/check
Content-Type: text/html
Authorization, please wait...
Please wait...
This page is shown because you do not have a cookie set with the name AUTHORIZED.
It'll redirect you to broyer.info and check whether you're already authenticated over there.
Once you're authenticated at broyer.info, you'll be granted access to ltgt.net.