[webkit-dev] New iOS versions sending bogus User-Agent build data

Michael Catanzaro mcatanzaro at igalia.com
Thu Apr 26 09:16:18 PDT 2018

On Thu, Apr 26, 2018 at 11:13 AM, Michael Catanzaro 
<mcatanzaro at igalia.com> wrote:
> By fixing the WebKit bug, of course. And in the meantime you can work 
> around it on the server side by not using <img src=mp4>, right?

Consider the other perspective on this problem. If other servers look 
at the WebKit version in the UA to determine if WebKit supports img 
src=mp4, other WebKit ports that don't support this are going to be out 
of luck and get broken pages. I know that's not what you're doing -- 
you're looking at iOS version instead, and only doing it to work around 
a specific bug, which is much better -- but the problem of websites 
sending bad content based on bad user agent parsing is so severe that 
we don't have many good options, here. :/


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