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

[Ricky Young]

Hi Konstantin,

Thanks for your prompt response :-)

I didn't notice this bug and the respective patches.

I read the report and still find it hard to understand, if "User Agent sniffing is a terrible way to determine whether a browser supports certain features", what is the correct way of doing it?
 

Sent: Thursday, April 26, 2018 at 1:16 PM
From: "Konstantin Tokarev" <annulen at yandex.ru>
To: "Ricky Young" <ricky at gmx.com>, "webkit-dev at lists.webkit.org" <webkit-dev at lists.webkit.org>
Subject: Re: [webkit-dev] New iOS versions sending bogus User-Agent build data

26.04.2018, 13:08, "Ricky Young" <ricky at gmx.com>:
> Until iOS 11.3, User-Agent build data contained the build that corresponds to the device (e.g. Mobile/15D100 if the requesting device was running iOS 11.2.6).
>
> Since iOS 11.3 was released I noticed that the User-Agent that is reported to the brower is reporting a bogus build, i.e Mobile/15E148, regardless to the iOS version that the requesting device is running. I would expect that a device that runs 11.3 will reprot a different User-Agent than a device that runs 11.3.1 and certianly than a device that runs 11.4 (Beta 1 & 2).
>
> I just wonder if my observation is an expected behavior, and if so, what is the intention behind it. If this behavior is not intended and expected, I would love to research it and propose a patch (would be my first Open Source contribution).

Hi,

User-Agent string is frozen since https://bugs.webkit.org/show_bug.cgi?id=180365

-- 
Regards,
Konstantin