Curl's HTTP/3 implementation is still experimental. I tried to check the behavior using libcurl 8.0.1, but I confirmed problems such as communication errors and communication stoppages. So it's still too early to enable it in WebKit. On the other hand, having an environment that facilitates HTTP/3 verification and testing is very useful. So, we will add an option and settings to enable HTTP/3 to make it easier to check and test the behavior of HTTP/3 in the future.
Pull request: https://github.com/WebKit/WebKit/pull/13192
Committed 263447@main (7327aab70ea5): <https://commits.webkit.org/263447@main> Reviewed commits have been landed. Closing PR #13192 and removing active labels.
<rdar://problem/108591795>