Contact emails victor...@chromium.org, miketa...@chromium.org, jadekess...@chromium.org
Specification https://wicg.github.io/ua-client-hints/#sec-ch-ua-full-version-list Summary The Sec-CH-UA-Full-Version-List request header field gives a server information about the full version for each brand in its brands list. Blink component Privacy>Fingerprinting <https://bugs.chromium.org/p/chromium/issues/list?q=component:Privacy%3EFingerprinting> Motivation As raised in UA-CH Issue 196 <https://github.com/WICG/ua-client-hints/issues/196>, Sec-CH-UA-Full-Version can be considered too tightly bound to the primary brand in the brand list <https://wicg.github.io/ua-client-hints/#user-agent-brands>, especially for embedders. In order to prevent classes of bugs where a site might think the fictional “Hamburger” browser is not up to date (because its version scheme is different, and lower than Chromium’s), we propose to expose the full version of each brand in the brand list, by requesting this new client hint. Here’s what that would look like: Sec-CH-UA-Full-Version-List: “Hamburger”; v="92.0.902.73", "Chromium"; v="92.0.4515.131", "?Not:A Browser"; v="3.1.2.0" Eventually, it will make sense to deprecate and remove Sec-CH-UA-Full-Version <https://wicg.github.io/ua-client-hints/#sec-ch-ua-full-version> (assuming usage allows us to do so). But we do not intend to do that until we ship its replacement. Initial public proposalhttps://github.com/WICG/ua-client-hints/issues/196 TAG review https://github.com/w3ctag/design-reviews/issues/640 TAG review status Pending (there’s a pre-existing review, and this hint came up in the review process as feedback from other browsers, so the TAG is aware of it). RisksInteroperability and CompatibilityThis is a new hint, so it should not create compatibility issues. Edge: This hint was added to solve a bug (maybe a feature request?) <https://github.com/WICG/ua-client-hints/issues/196> by Edge folks. Gecko: Non-harmful ( https://mozilla.github.io/standards-positions/#ua-client-hints) WebKit: Requested through email <https://lists.webkit.org/pipermail/webkit-dev/2021-November/032047.html> Web developers: No signals Debuggability No special DevTools support needed. It should just work™. Is this feature fully tested by web-platform-tests <https://chromium.googlesource.com/chromium/src/+/master/docs/testing/web_platform_tests.md> ? Yes. https://chromium-review.googlesource.com/c/chromium/src/+/3256910 Flag name UserAgentClientHintFullVersionList Requires code in //chrome? False Tracking bug https://bugs.chromium.org/p/chromium/issues/detail?id=1249246 Launch bug https://bugs.chromium.org/p/chromium/issues/detail?id=1260418 Link to entry on the Chrome Platform Status https://chromestatus.com/feature/5703317813460992 -- You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to blink-dev+unsubscr...@chromium.org. To view this discussion on the web visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAJh4P7FdCmHAA-8b1CH_So%3D2Fur2dZO8SKNetWmEetQ1KcP9_A%40mail.gmail.com.
