Sorry, there were some details left out of this I2E. We actually have a lot
of signals from web devs on this. There are some comments on

https://discourse.wicg.io/t/proposal-stateful-javascript-page-unload-beacon-api/5776

but we also presented this to W3C WebPerf with a lot of positive signals.
Minutes are here
<https://w3c.github.io/web-performance/meetings/2022/2022-03-31/index.html>
from
the most recent one.

We don't have any reaction from Mozilla or WebKit that I know of and we
will file a TAG request shortly,

F

On Sat, 18 Jun 2022 at 02:57, Mike Taylor <miketa...@chromium.org> wrote:

> On 6/17/22 10:59 AM, Ming-Ying Chung wrote:
>
> Contact emails
>
> m...@chromium.org, fer...@chromium.org, denom...@chromium.org
>
> Explainer
>
> https://github.com/darrenw/docs/blob/main/explainers/beacon_api.md
>
> Specification
>
> https://clelland.github.io/page-unload-beacon/spec.html (In draft state)
>
> Summary
>
> A stateful API for beacons that has the browser control the time beacons
> are sent.
>
> Existing beacon APIs are all based around a developer constructing and
> sending a beacon, and there's no good time for that "send" call to be made.
> (Handlers such as 'unload' are often ignored, for example.) This API
> delegates the sending to the browser itself, so it can support beacons on
> page unload or on page hide, without the developer having to implement send
> calls at exactly the right times.
>
>
> Blink component
>
> Blink>Network
> <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3ENetwork>
>
> TAG review
>
> None yet.
>
> I'd recommend filing a TAG review as well as asking for signals now, to
> allow folks plenty of time to respond.
>
> TAG review status
>
> N/A
>
> Risks
>
> Interoperability and Compatibility
>
> Gecko: No signal
>
> WebKit: No signal
>
> Web developers: No signals
>
> Other signals:
>
> WebView application risks
>
> Does this intent deprecate or change behavior of existing APIs, such that
> it has potentially high risk for Android WebView-based applications?
>
>
> Goals for experimentation
>
> The intent is for experiments to learn that developers can easily adopt
> the API shapes to achieve current use cases in addition to getting feedback
> from them. The experiment also aims to test the stability and reliability
> of the API.
>
> Ongoing technical constraints
>
> In M104, the API described in the explainer is not yet fully developed,
> such that the API
>
>    -
>
>    Supports only the GET method. Setting it to POST will fall back to GET.
>    -
>
>    Does not support request payload, i.e. it does not send out data set
>    by setData(data).
>    -
>
>    Does not support pageHideTimeout.
>    -
>
>    Does not recover from browser crashes, forced closures, network
>    failure, etc.
>
>
> Debuggability
>
> There are no particular debugging APIs made available or Chrome DevTools
> integrations for this OT. We plan to build an integration with Chrome
> DevTools to provide a better developer experience. This OT will allow us to
> get feedback that helps us build the right design.
>
> Will this feature be supported on all six Blink platforms (Windows, Mac,
> Linux, Chrome OS, Android, and Android WebView)?
>
> Yes
>
> Is this feature fully tested by web-platform-tests
> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>
> ?
>
> No, basic tests are present and we will be adding more as we complete more
> of the implementation.
>
> Flag name
>
> PendingBeaconAPI
>
> Requires code in //chrome?
>
> False
>
> Tracking bug
>
> https://bugs.chromium.org/p/chromium/issues/detail?id=1293679
>
> Launch bug
>
> https://bugs.chromium.org/p/chromium/issues/detail?id=1323615
>
> Estimated milestones
>
> M104 for off-by-default experiment
>
> Just to confirm, the request is only for a single milestone (104)?
>
>
> Link to entry on the Chrome Platform Status
>
> https://chromestatus.com/feature/5690553554436096
>
> Links to previous Intent discussions
>
> Intent to prototype:
> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAG%2BRaU7yMQ%2BRkeSpXhgbfCSGb4BvpW-exTUFZzb_eMFRE%2B_syQ%40mail.gmail.com
> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/cag+rau7ymq+rkespxhgbfcsgb4bvpw-extufzzb_emfre+_...@mail.gmail.com>
>
>
> This intent message was generated by Chrome Platform Status
> <https://chromestatus.com/>.
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> .
>
>
>

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