Follow Techotopia on Twitter

On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Programming
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Desktop
Databases
Mail Systems
openSolaris
Eclipse Documentation
Techotopia.com
Virtuatopia.com

How To Guides
Virtualization
General System Admin
Linux Security
Linux Filesystems
Web Servers
Graphics & Desktop
PC Hardware
Windows
Problem Solutions

  




 

 

Previous Chapter 3 Next
 

3. Output from the Common Gateway Interface

3.1 Overview

As described in Chapter 3, Output from the Common Gateway Interface, CGI programs are requested like any other regular documents. The difference is that instead of returning a static document, the server executes a program and returns its output. As far as the browser is concerned, however, it expects to get the same kind of response that it gets when it requests any document, and it's up to the CGI program to produce output that the browser is comfortable with.

The most basic output for a CGI program is a simple document in either plain text or HTML, which the browser displays as it would any document on the Web. However, there are other things you can do, such as:

  • Return graphics and other binary data

  • Tell the browser whether to cache the virtual document

  • Send special HTTP status codes to the browser

  • Tell the server to send an existing document

Each of these techniques involves knowing a little bit about returning additional headers from the CGI program.


Previous Home Next
Examining Environment Variables Book Index CGI and Response Headers

 
 
  Published under free license. Design by Interspire