Add HTTP 103 Early Hints

[iGEL]

As far as I can see, there is no information about the new HTTP 103 Early Hints status code. I see that it picks up more and more speed, for example the Rails web framework added support for that. I think it would be a valuable addition to caniuse.

[Malvoz]

+1

[Munter]

RFC 8297 as of today: https://www.rfc-editor.org/rfc/rfc8297.txt

[Munter]

Support in Apache: https://httpd.apache.org/docs/2.4/mod/mod_http2.html#h2earlyhints

[Malvoz]

Chrome bug: https://bugs.chromium.org/p/chromium/issues/detail?id=671310
Firefox bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1407355

[sarthakuiit]

+1

[AsyncBanana]

Chrome 94 has added support for this. I might try to add the data in a pr, although I haven't done any testing on other Chromium browsers, but they should support it if Chrome does.

[Malvoz]

@AsyncBanana It looks like the feature hasn't shipped yet, though it is available for Origin Trials.

[Hexstream]

Cloudflare just released beta support for Early Hints to everyone for free!!!

edit: After finishing reading the article, it seems that the important "Smart Early Hints" feature will be released in a few months, but this is still very exciting. See the "Browser support" section of the article, Early Hints is quickly picking up steam!

[alexander-schranz]

Go 1.19 will be shipped with 103 support: golang/go#42597. Would be nice to have this in caniuse to stay up2date which browser support 103.
And tests where also added to the web test platform: web-platform-tests/wpt#33076

[Schweinepriester]

Coincidentally shipping in Chrome 103: https://developer.chrome.com/blog/new-in-chrome-103/#http103

A support page is available via MDN: https://caniuse.com/mdn-http_status_103 😎🎉

More links:

• https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/103
• https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#103
• WebKit bug: https://bugs.webkit.org/show_bug.cgi?id=238921

If somebody finds the nginx support/issue, please reply :D

[PikachuEXE]

Caddy has added support for early hints in 2.6.0
I have switched from Nginx to support this feature early

Is https://caniuse.com/mdn-http_status_103 the official page for early hints on caniuse?

[Tanmayshetty]

NGINX ticket: https://trac.nginx.org/nginx/ticket/2432

[Schweinepriester]

https://developer.apple.com/documentation/safari-release-notes/safari-17-release-notes

HTTP

New Features

• Added support for HTTP Early Hints. (40487508)

• Added support for preconnect via HTTP early hints. (106055702)