http://www.w3.org/Protocols/HTTP
http://www.cookiecentral.com
ftp://ftp.isi.edu/in-notes/rfc2109.txt
http://java.sun.com/products/servlet/2.1/api/Package-javax.servlet.http.html
http://www.hidaho.com/cookies/cookie.txt
http://www.ncsa.uiuc.edu/demoweb/url-primer.html
references