LGTM1 On Tue, Feb 1, 2022 at 8:24 AM Mike Taylor <miketa...@chromium.org> wrote:
> *Contact emails* > > > > > > > > > > > > > > > > > > > > > > > > > > > * miketa...@chromium.org <miketa...@chromium.org>, abe...@chromium.org > <abe...@chromium.org>, jadekess...@chromium.org <jadekess...@chromium.org> > Explainer > https://github.com/WICG/ua-client-hints#explainer-reducing-user-agent-granularity > <https://github.com/WICG/ua-client-hints#explainer-reducing-user-agent-granularity> > Specification https://www.chromium.org/updates/ua-reduction > <https://www.chromium.org/updates/ua-reduction> is the closest thing that > specifies Chrome’s UA Reduction plans today. As these changes land in > Chromium, the Compat Standard <https://compat.spec.whatwg.org/> will be > updated to reflect them (in the newly landed UA String section > <https://compat.spec.whatwg.org/#ua-string-section>). Summary As previously > detailed on the Chromium Blog > <https://blog.chromium.org/2021/09/user-agent-reduction-origin-trial-and-dates.html>, > we intend to proceed with Phase 4 of the User-Agent Reduction plan. In > Phase 4, the MINOR.BUILD.PATCH version numbers are reduced to "0.0.0". For > use cases requiring high-entropy full version information, developers are > encouraged to migrate to the User Agent Client Hints API > <https://web.dev/migrate-to-ua-ch/>, in particular the > Sec-CH-UA-Full-Version-List > <https://wicg.github.io/ua-client-hints/#sec-ch-ua-full-version-list> hint. > Blink component Blink > <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink> TAG > review https://github.com/w3ctag/design-reviews/issues/640 > <https://github.com/w3ctag/design-reviews/issues/640> TAG review status > Issues addressed Risks Interoperability and Compatibility Any time you > modify the User-Agent string there is a risk of some content somewhere > depending on the previous format. There should not be interop risks, as > each browser sends its own User-Agent string. But there is a risk that > content somewhere is relying on “non-zero” MINOR, BUILD, or PATCH > information. My personal view is that the risk is low compared to the rest > of the changes to come in later phases. But in order to mitigate the risk > of this change, we intend to slowly roll it out via Finch and observe > health metrics (i.e., HTTP 4XX and 5XX error codes, etc.) and bug reports > from the community. We've surveyed dozens of User-Agent parsing libraries, > and as far as we know "0.0.0" will not create a problem syntactically. But > the web can get pretty weird in ways we don't anticipate, hence the slow > roll-out and incremental path towards User-Agent Reduction. Gecko: > Shipped/Shipping. Firefox has frozen (or capped) much of their UA string > already. WebKit: Shipped/Shipping. Safari has already frozen everything in > their UA string except for version number info. Web developers: Mixed > signals. Reactions have ranged from positive to indifferent to negative, > from various channels. Debuggability No special DevTools support needed. Is > this feature fully tested by web-platform-tests > <https://chromium.googlesource.com/chromium/src/+/master/docs/testing/web_platform_tests.md>? > No Flag name reduce-user-agent Requires code in //chrome? False Tracking > bug https://bugs.chromium.org/p/chromium/issues/detail?id=1282229 > <https://bugs.chromium.org/p/chromium/issues/detail?id=1282229> Launch bug > https://bugs.chromium.org/p/chromium/issues/detail?id=1282238 > <https://bugs.chromium.org/p/chromium/issues/detail?id=1282238> Estimated > milestones We aim to start rollout in M101. We will update this thread once > the feature is shipping to 100% of the stable population. Link to entry on > the Chrome Platform Status > https://chromestatus.com/feature/6311349754789888 > <https://chromestatus.com/feature/6311349754789888> * > > -- > 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/05b6cf46-7bce-bd03-8a93-0db496a3a26e%40chromium.org > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/05b6cf46-7bce-bd03-8a93-0db496a3a26e%40chromium.org?utm_medium=email&utm_source=footer> > . > -- 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/CAOMQ%2Bw-_UKAgfawwCKrok5t5vtyNEWFwXSZgO8wYfCXB7PzeWQ%40mail.gmail.com.
