Is this possible with NodeJS + express already? I didn't see any package for that or config
But that's pretty irrelevant for most production deployments, as you'll almost certainly want to have some type of AWS ALB, nginx, Cloudflare etc. load balancer in front of your Node services.
As for HTTP/3 that’s a bit further down the line
Essentially, the core of standard HTTP requests and responses (method, path, headers, response code) is fairly unchanged since HTTP/1.0, and what's changed is how those requests/responses are encoded and carried.
More on our blog https://blog.cloudflare.com/http3-the-past-present-and-futur...
TLDR: we are a few years out from this being anything but experimental in node.