For More Information
Here are a few more useful sources for additional information about cookies:
Cookies
Simon St.Laurent, McGraw-Hill.
http://www.ietf.org/rfc/rfc2965.txt
RFC 2965, "HTTP State Management Mechanism" (obsoletes RFC 2109).
http://www.ietf.org/rfc/rfc2964.txt
RFC 2964, "Use of HTTP State Management."
http://home.netscape.com/newsref/std/cookie_spec.html
This classic Netscape document, "Persistent Client State: HTTP Cookies," describes the original form of HTTP cookies that are still in common use today.