For more information, refer to:
http://www.w3.org/Protocols/rfc2616/rfc2616.txt
RFC 2616, "Hypertext Transfer Protocol," by R. Fielding, J. Gettys, J. Mogul, H. Frystyk, L. Mastinter, P. Leach, and T. Berners-Lee.
Web Proxy Servers
Ari Luotonen, Prentice Hall Computer Books.
http://www.alternic.org/drafts/drafts-l-m/draft-luotonen-web-proxy-tunneling-01.txt
"Tunneling TCP based protocols through Web proxy servers," by Ari Luotonen.
http://cgi-spec.golux.com
The Common Gateway InterfaceRFC Project Page.
http://www.w3.org/TR/2001/WD-soap12-part0-20011217/
W3CSOAP Version 1.2 Working Draft.
Programming Web Services with SOAP
James Snell, Doug Tidwell, and Pavel Kulchenko, O'Reilly & Associates, Inc.
http://www.w3.org/TR/2002/WD-wsa-reqs-20020429
W3CWeb Services Architecture Requirements.
Web Services Essentials
Ethan Cerami, O'Reilly & Associates, Inc.