| Browsers and Servers
WEB Browsers and Servers
URLS
Hypertext Transfer Protocol (HTTP)
Common Gateway Interface
What is CGI?
Why use CGI applications?
Environment Variables
Managing CGI Files
Control Input to CGI Applications
ISINDEX, GET, and POST
GET Method
POST Method
Perl
CGI Module
CGI.pm Module
Perl Subroutines
Perl Objects
Perl Methods
Commonly Used Methods
Forms
Form Objects
Static Forms
Dynamic Forms
CGI/Browser Interaction
Animation Description
Server Push
Client Pull
Serverside Includes
Serverside Includes: Why?
The exec Command
Example
Accessing Databases
Browser Database Access
Static Flat-File Database
perl DBM Interface
Third Party RDBMS application
Stateful CGI Applications
Stateful vs. Stateless
Why Use Stateful CGI Applications?
Stateful Access with a Cookie
Advanced HTML Interface Tools
Image Maps
Tables
Multiple Form Interaction
Frames
GD Library
Appendix: Overview of Internet Security
Security Issues
Platform Differences
Cryptography
Encryption Keys
Controlling User Access
“Trusted Server”
Developing an e-mail interface
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