News Feed
Sections




News Archive
Looking for more information on how to do PHP the right way? Check out PHP: The Right Way

Ivo Jansch's Blog:
How a PHP notice revealed a quirk of Norton Internet Security
April 05, 2006 @ 07:00:13

While hacking around on one of his recent PHP scripts, Ivo Jansch noticed something odd - a notice message that seemed to appear out of nowhere.

I thought 'Que?!', as I have not modified the code in class.atkoutput.inc in weeks, and certainly not tonight.

This code worked in all browsers, for years, without notices, because the HTTP_ACCEPT_ENCODING header is usually set for most major browsers.

He made a connection as to a probable cause - the error showed up when he had installed the Norton Internet Security software on his laptop. The firewall in this software was grabbing the header in the notice (the index for HTTP_ACCEPT_ENCODING in $_SERVER) and stripping it from the connection.

The (undocumented?) side effect is that with Norton Internet Security active, no page will be send gzipped. This is a performance penalty I think. They probably do it to be able to scan the text before it arrives in the browser (unzipping, scanning and rezipping would probably take too much time).

0 comments voice your opinion now!
norton internet security software strip header HTTP_ACCEPT_ENCODING norton internet security software strip header HTTP_ACCEPT_ENCODING


blog comments powered by Disqus

Similar Posts

ThinkPHP Blog: SQL injections for dummies - and how to fix them

PHP.net: PHP 5.2.1 and PHP 4.4.5 Released

PHPro.org: PHP Security

Job Posting: Boutique Bay Area Consulting Firm Seeks Sr. Software Engineer (Palo Alto, CA)

Job Posting: BetFair Seeks Lead Software Engineer (Web)


Community Events





Don't see your event here?
Let us know!


series introduction install symfony2 opinion laravel code refactor api developer framework list language release interview testing podcast community unittest threedevsandamaybe

All content copyright, 2014 PHPDeveloper.org :: info@phpdeveloper.org - Powered by the Solar PHP Framework