Mew.org is now speaking HTTP/3 (HTTP/2 over QUIC). If you gain access to the site using Firefox Nightly, the first connection would be HTTP/2 then the following connections should be HTTP/3 led by Alt-Svc:. Firefox Nightly This article explains insights which I found through the implementation activities of QUIC and HTTP/3 in Haskell. HTTP/2 server library I started implementing QUIC in January 20
