HTTP/1.0 Server headers
WWW-Authenticate - sent by server
- WWW-Authenticate: <challenge>
- tells client to resend request with Authorization: header
Incrementally added hacks:
- Accept: image/gif, image/jpeg, text/*, */*
- Accept-Encoding: gzip
- Accept-Language: en
- Retry-After: (date) or (seconds)
- [Set-]Cookie: Part_Number="Rocket_Launcher_0001"; Version="1"; Path="/acme"
- Title: (title)