HTTP Features
- ETag and Last-Modified Headers
- User-Agent and Referer Headers
- HTTP Redirects
- Password-Protected Feeds
- Downloading a feed protected by basic authentication (the easy way)
- Downloading a feed protected by digest authentication (the easy but horribly insecure way)
- Downloading a feed protected by HTTP basic authentication (the hard way)
- Downloading a feed protected by HTTP digest authentication (the secure way)
- Determining that a feed is password-protected
- Other HTTP Headers