Do you have a suggested "removal milestone"?

We have found that unless we name a specific milestone, many people ignore deprecation warnings and then they pile up and we get warning fatigue.

Also, do you have usage data? Use Counters or some other kind of upper limit on how many might be affected?

/Daniel

On 2026-04-08 11:29, Chromestatus wrote:
*Contact emails*
[email protected]

*Explainer*
/No information provided/

*Specification*
https://w3c.github.io/webtransport/#dom-webtransportdatagramduplexstream-incomingmaxbuffereddatagrams,https://github.com/web-platform-tests/wpt/pull/58612/changes

*Summary*
The incomingHighWaterMark and outgoingHighWaterMark attributes on WebTransportDatagramDuplexStream are deprecated in favor of incomingMaxBufferedDatagrams and outgoingMaxBufferedDatagrams, following a spec rename. The attribute type also changes from long to unsigned long. Developers should migrate to the new attribute names. The old names will show a console deprecation warning and will be removed in a future release.

*Blink component*
Blink>Network>WebTransport <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3ENetwork%3EWebTransport%22>

*Web Feature ID*
webtransport <https://webstatus.dev/features/webtransport>

*Motivation*
The WebTransport specification renamed two attributes on WebTransportDatagramDuplexStream: - incomingHighWaterMark → incomingMaxBufferedDatagrams - outgoingHighWaterMark → outgoingMaxBufferedDatagrams The attribute type was also changed from long to unsigned long. The new names better describe the attributes' purpose (they control the maximum number of buffered datagrams, not a byte-based high water mark). The new attribute names are already exposed alongside the old ones. The old names should be deprecated and removed to align with the specification and avoid developer confusion from having two names for the same thing.

*Initial public proposal*
/No information provided/

*Goals for experimentation*
None

*Debuggability*
/No information provided/

*Requires code in //chrome?*
False

*Tracking bug*
https://issues.chromium.org/issues/494380213

*Estimated milestones*

No milestones specified



*Link to entry on the Chrome Platform Status*
https://chromestatus.com/feature/5143839699501056?gate=4911413786181632

This intent message was generated by Chrome Platform Status <https://chromestatus.com>.
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