====== CGI ======

This lecture covers the Common Gateway Interface protocol. This includes the protocol itself, how to build CGI handlers in a variety of languages, and issues relating to reliability, efficiency, and session management.



===== Outline =====

  * The web server and the CGI handler in //four// steps: detection/launch, impersonation, environment vars, and I/O.
  * CGI handlers in shell script, C, and Java
  * Processes and threads, reliability, and efficiency
  * CGI handlers in Perl
  * Session management and tracking








===== To Do =====

  * Do [[http://www.cse.yorku.ca/~roumani/warp/labs/lab2.htm|Lab-2]]. Use the //Discussion Group// if you encounter problems. 
  * As you learn Perl from a book or from one of the resources in the //Resources// pages, add a contribution to the corresponding //Our Own Wiki// page (under //Resources//). You are asked to add one, and only one, section that captures one idea. Start it with a header title. 

===== Slides =====

[[http://www.cse.yorku.ca/~roumani/course/4413/pdf/CGI.pdf|pdf]]