Intent to Prototype: WebSockets over HTTP/3

[Momoka Yamamoto]

Contact emails

mom...@google.com

Explainer

None

Specification

https://www.rfc-editor.org/rfc/rfc9220.html

Summary

Implement support for WebSockets over HTTP/3 in Chromium according to specification RFC9220 https://www.rfc-editor.org/rfc/rfc9220.html . This would only be used for secure WebSockets requests, and only if there is already an HTTP/3 connection where the server has already advertised support for WebSockets over HTTP/3 via the HTTP/3 SETTINGS parameter defined in the specification

Blink component

Blink>Network>WebSockets

Motivation

Speed is the major motivation for this change. The number of connections to web servers over HTTP/3 is significantly increasing, but without WebSockets being supported over HTTP/3, it currently takes a few RTTs to negotiate a new connection. Supporting WebSockets over HTTP/3 would significantly cut down on latency. It also reduces the resource usage of the server implementing WebSockets, and so encourages adoption of WebSockets to the ecosystem.

Initial public proposal

TAG review

TAG review status

Not applicable

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?

Debuggability

Is this feature fully tested by web-platform-tests?

No

Flag name

Requires code in //chrome?

False

Tracking bug

https://bugs.chromium.org/p/chromium/issues/detail?id=1286832

Launch bug

https://launch.corp.google.com/launch/4219721

Estimated milestones

No milestones specified

Link to entry on the Chrome Platform Status

https://chromestatus.com/feature/5080537855688704

This intent message was generated by Chrome Platform Status.

[Rick Byers]

Sounds cool, thanks for the heads up and good luck!

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