Comments on: Quick and Dirty Browser Cookie Testing http://www.dennmart.com/2008/09/30/quick-and-dirty-browser-cookie-testing/ Official Blog of Dennis Martinez Tue, 07 Dec 2010 23:45:41 +0000 hourly 1 http://wordpress.org/?v=3.0 By: Stan Wiechers http://www.dennmart.com/2008/09/30/quick-and-dirty-browser-cookie-testing/comment-page-1/#comment-918 Stan Wiechers Fri, 19 Mar 2010 05:18:23 +0000 http://www.dennmart.com/?p=97#comment-918 good idea! good idea!

]]> By: max191 http://www.dennmart.com/2008/09/30/quick-and-dirty-browser-cookie-testing/comment-page-1/#comment-894 max191 Thu, 08 Oct 2009 15:53:44 +0000 http://www.dennmart.com/?p=97#comment-894 Loved to read your blog. I would like to suggest you that traffic show most people read blogs on Mondays. So it should encourage bloggers to write new write ups over the weekend primarily.<br>regards<br><a rel="dofollow" href="http://www.charcoalgrillsite.com" rel="nofollow">charcoal grill</a> Loved to read your blog. I would like to suggest you that traffic show most people read blogs on Mondays. So it should encourage bloggers to write new write ups over the weekend primarily.
regards
charcoal grill

]]> By: Jean J Abts http://www.dennmart.com/2008/09/30/quick-and-dirty-browser-cookie-testing/comment-page-1/#comment-861 Jean J Abts Mon, 16 Feb 2009 06:55:05 +0000 http://www.dennmart.com/?p=97#comment-861 you are on my rss reader now you are on my rss reader now

]]> By: William A Iuchs http://www.dennmart.com/2008/09/30/quick-and-dirty-browser-cookie-testing/comment-page-1/#comment-848 William A Iuchs Mon, 02 Feb 2009 07:42:00 +0000 http://www.dennmart.com/?p=97#comment-848 nice article! nice site. you're in my rss feed now ;-)<br>keep it up nice article! nice site. you're in my rss feed now ;-)
keep it up

]]> By: Valentin Perez http://www.dennmart.com/2008/09/30/quick-and-dirty-browser-cookie-testing/comment-page-1/#comment-847 Valentin Perez Sun, 01 Feb 2009 18:23:00 +0000 http://www.dennmart.com/?p=97#comment-847 nice article! nice site. you're in my rss feed now ;-)<br>keep it up nice article! nice site. you're in my rss feed now ;-)
keep it up

]]> By: Dan Gebhardt http://www.dennmart.com/2008/09/30/quick-and-dirty-browser-cookie-testing/comment-page-1/#comment-841 Dan Gebhardt Thu, 20 Nov 2008 21:43:31 +0000 http://www.dennmart.com/?p=97#comment-841 Thanks for your code, Dennis. It works well to detect if cookies can be accepted by browsers, but does not necessarily detect if Safari's "Private Browsing" mode has been enabled. In this mode, new cookies can apparently be created but cookies created outside of "Private Browsing" mode will not be overwritten. This can create almost as many problems for cookie-based sessions as if cookies were not accepted at all.<br><br>I've modified your solution to also test for this case. In order to do this, I set the test cookie to a dynamic value, such as the current time. I then check whether the cookie has been set to the dynamic cookie value to ensure that "private browsing" has not been enabled.<br><br>In order for this to work, you unfortunately can't delete the cookie after the test. Otherwise, the test won't recognize when the user had a previous session created outside of private browsing mode that they are now trying to change in private browsing mode.<br><br>NOTE: I tried to post this comment earlier with a bit of javascript source in my comments, but DISQUS wasn't happy so I trimmed my code out. Thanks for your code, Dennis. It works well to detect if cookies can be accepted by browsers, but does not necessarily detect if Safari's “Private Browsing” mode has been enabled. In this mode, new cookies can apparently be created but cookies created outside of “Private Browsing” mode will not be overwritten. This can create almost as many problems for cookie-based sessions as if cookies were not accepted at all.

I've modified your solution to also test for this case. In order to do this, I set the test cookie to a dynamic value, such as the current time. I then check whether the cookie has been set to the dynamic cookie value to ensure that “private browsing” has not been enabled.

In order for this to work, you unfortunately can't delete the cookie after the test. Otherwise, the test won't recognize when the user had a previous session created outside of private browsing mode that they are now trying to change in private browsing mode.

NOTE: I tried to post this comment earlier with a bit of javascript source in my comments, but DISQUS wasn't happy so I trimmed my code out.

]]> By: Eric http://www.dennmart.com/2008/09/30/quick-and-dirty-browser-cookie-testing/comment-page-1/#comment-821 Eric Wed, 01 Oct 2008 15:35:54 +0000 http://www.dennmart.com/?p=97#comment-821 Appreciate the link, but if you'd read my article, you'd have seen that my method does not in fact use a GET parameter. The first thing I found in google did, but I also ditched that, not because it wasn't clean (which it isn't) but because of other bugs it introduces, which I also mentioned in my article. That said, I like your solution even more, since while it does run on each page load, the impact should be negligible, and it doesn't require a page redirect at all. Nice work. :) -Eric Appreciate the link, but if you’d read my article, you’d have seen that my method does not in fact use a GET parameter. The first thing I found in google did, but I also ditched that, not because it wasn’t clean (which it isn’t) but because of other bugs it introduces, which I also mentioned in my article.

That said, I like your solution even more, since while it does run on each page load, the impact should be negligible, and it doesn’t require a page redirect at all. Nice work. :)

-Eric

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