September 2002
Intermediate to advanced
544 pages
13h 6m
English
Content preview from Sams Teach Yourself CGI in 24 Hours, Second Edition
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Basic Authentication
One of the earliest mechanisms for preserving client state is basic authentication. By state, I mean the current status of the user’s activity or transaction. Basic authentication is used to protect subdirectories of a Web server by user ID and password, and was implemented on some of the earliest Web servers. The only element of the session’s state that basic authentication maintains is the username and password they used to log in.
The way basic authentication works is that the server expects to receive an Authorization: header with requests. If the Authorization: header is not present or the user ID and password sent in the header are not valid, the request is rejected. The user sees a 401 Unauthorized response code, ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.