relnote(Fx132): HTTP/2 Server Push deactivated by default

[bsmth]

HTTP/2 Server Push is being unshipped everywhere. This is landing in the 132 Fx release.

https://groups.google.com/a/mozilla.org/g/dev-platform/c/vU9hJg343U8/m/4cZsHz7TAQAJ

Context:

Two years ago Chrome disabled HTTP/2 push citing low use, and recommending the rel="preload" and 103 Early hints as a replacement.
Firefox has continued supporting HTTP/2 push as this wasn't too large of an effort until recently. However in the past few months we've encountered some webcompat bugs only affecting Firefox through HTTP/2 push: bug 1915830. This means that if webservers and websites use push and don't test in Firefox, this feature can potentially cause websites to stop working only in Firefox (eg bug 1913100)
Though we will pref it off now, the implementation will remain in the tree for a while longer. Most likely we will remove it completely before we branch for ESR 140 in the spring of next year.

Related issues and pull requests:

• Parent issue [HTTP] Pref off HTTP/2 push #36116

[github-actions]

Preview URLs

• /en-US/docs/Mozilla/Firefox/Releases/132

External URLs (1)

URL: /en-US/docs/Mozilla/Firefox/Releases/132
Title: Firefox 132 for developers

• https://bugzil.la/1915848 (1 time) (Note! This may be a new URL 👀)

(comment last updated: 2024-10-10 03:11:13)

[dipikabh]

Thank you!