Re: [whatwg/fetch] Consider restricting 103 Early Hints to HTTP/2 or later (Issue #1698) from Valentin Gosu on 2023-09-04 (public-webapps-github@w3.org from September 2023)

From: Valentin Gosu <notifications@github.com>
Date: Mon, 04 Sep 2023 02:16:19 -0700
To: whatwg/fetch <fetch@noreply.github.com>
Cc: Subscribed <subscribed@noreply.github.com>
Message-ID: <whatwg/fetch/issues/1698/1704907061@github.com>

> In fact the only HTTP/1.1 implementation I am aware of is [Firefox](https://bugzilla.mozilla.org/show_bug.cgi?id=1813035#c6), but this still has not been enabled by default.

Indeed Firefox accepts early hints over HTTP/1.1, but that doesn't necessarily mean that it should. In fact, it's entirely possible that it could hurt performance when used with HTTP/1.1, but we haven't actually looked at it until now. We are currently looking into adding telemetry for how often we see this on the web, and if it has any performance impact. We'll probably end up only allowing EH on H2+ protocols anyway.

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Received on Monday, 4 September 2023 09:16:26 UTC