[webkit-dev] UA string changes blog draft

Adam Roben aroben at apple.com
Fri Mar 25 11:01:29 PDT 2011

On Mar 25, 2011, at 1:53 PM, Peter Kasting wrote:

> UA String Changes On WebKit Trunk
> Posted by Peter Kasting on Friday, March 25th, 2011 at 10:44 am
> Recently some changes to the UA string (tracked by https://bugs.webkit.org/show_bug.cgi?id=54556) have landed.  These changes are designed to add UA string detail, remove redundancy, and increase compatibility with Internet Explorer, and are happening in conjunction with similar changes in Firefox 4 (which you can read about at http://hacks.mozilla.org/2010/09/final-user-agent-string-for-firefox-4/).
I find textual links, rather than bare URLs, more user-friendly. "bug 54556" could be used as the text for the first link, at least.
> Here’s a few sample pre-change UA strings:
>  Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/533.19.4 (KHTML, like Gecko) Version/5.0.3 Safari/533.19.4
>  Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_7; en-us) AppleWebKit/534.16+ (KHTML, like Gecko) Version/5.0.3 Safari/533.19.4
> Here’s some sample post-change UA strings:
>  Mozilla/5.0 (Windows NT 6.0; WOW64) AppleWebKit/534.24 (KHTML, like Gecko) Version/5.0.3 Safari/534.24
>  Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_7; en-us) AppleWebKit/534.24 (KHTML, like Gecko) Version/5.0.3 Safari/534.24

"Here's" should probably be "Here are" in both cases above.

> The “U” SSL encryption strength token has been removed.
It is still present in the Mac UA strings you showed above.

Thanks for writing the post!


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