WebSockets over HTTP/2

Category: Network / Connectivity
Type: New or changed feature
Status: Enabled by default (Chrome 91)
Intent stage: Shipped

Summary

Supports WebSockets over HTTP/2 in Chromium as specified in RFC 8441 https://tools.ietf.org/html/rfc8441. This is only used for secure WebSockets requests, and only when there is already an HTTP/2 connection where the server has already advertised support for WebSockets over HTTP/2 via the HTTP/2 SETTINGS parameter defined in the specification.

Standards & signals

Specification: https://tools.ietf.org/html/rfc8441
Firefox: Shipped/Shipping
Safari: No signal
Web developers: No signals
Tracking bug: https://crbug.com/801564

Docs: https://docs.google.com/document/d/1ZxaHz4j2BDMa1aI5CQHMjtFI3UxGT459pjYv4To9rFY

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