If you use Chromium or Firefox, you may have used HTTP/3 and not realized. It happened to me! https://ifconfig.net/ https://ifconfig.net/ uses HTTP/3 by virtue

If you use Chromium or Firefox, you may have used HTTP/3 and not realized. It happened to me! https://ifconfig.net/ https://ifconfig.net/ uses HTTP/3 by virtue of Cloudflare's proxy using it. I'm on Firefox 115, half a year old, and the network inspector says I connect to ifconfig over HTTP/3. The rollout's been really smooth and quiet. Browsers do the same "happy eyeballs" optimization as they did for HTTP/2 and SPDY, racing QUIC with TCP and using which-ever one connects first, or maybe dropping TCP if QUIC connects a couple milliseconds later. Hell, CF actually rolled out HTTP/3 before the pandemic, in 2019 https://blog.cloudflare.com/http3-the-past-present-and-future/ https://blog.cloudflare.com/http3-the-past-present-and-futur...