Before we'll do this implementation, we'll have to upgrade our NGINX installations.

We've released that this morning, 1.24 is being installed on fresh servers now. We'll be adding a documentation article & upgrade button to upgrade existing NGINX versions.

We'll have to wait until this seems stable and working, then we'll integrate the stable/mainline option inside the server builder, and also HTTP/3.

@Dennis Any news on this, and will it be an option on existing servers to switch to the Mainline version? Or do we need to deploy a new server for that?

Any update on this? I am looking to get my sites QUIC/HTTPS3 ready.

Please also update haproxy on load balancers to version 2.8. That version also supports HTTP/3.

Hello, Any news on this ?

Yes, the news: https://x.com/dennis_smink/status/1810568164863856993

For now if you want to use it add this to your NGINX Site config;

    # HTTP/3 QUIC
    listen 443 quic reuseport;
    listen [::]:443 quic reuseport;
    ssl_protocols TLSv1.3;
    ssl_session_timeout 1d;
    ssl_session_cache shared:SSL:10m;
    add_header Alt-Svc 'h3-29=":443"; ma=86400'; # h3-29 is the version of HTTP/3
    add_header X-Content-Type-Options nosniff;

Make sure you also open port 443 UDP on both your VPS Provider if you have Firewall Enabled and also in the network tab on the server level in Ploi.

To see if HTTP/3 Works you can use this website: https://http3check.net/

It would be beautiful if anyone here can test! Kay already did, and it was a success 🔥

Hey, I would also like to test this, but I am unsure what steps I need to follow.

First I checked on a Ubuntu 20.04 LTS the nginx version with nginx -v:
nginx version: nginx/1.18.0 (Ubuntu)

I probably need to upgrade my nginx, for HTTP/3 Support right? How would I do that?

Afterwards I would add the snippet from Kay to the site which should support HTTP/3:

    # HTTP/3 QUIC
    listen 443 quic reuseport;
    listen [::]:443 quic reuseport;
    ssl_protocols TLSv1.3;
    ssl_session_timeout 1d;
    ssl_session_cache shared:SSL:10m;
    add_header Alt-Svc 'h3-29=":443"; ma=86400'; # h3-29 is the version of HTTP/3
    add_header X-Content-Type-Options nosniff;

Lastly I need to request a new Let's Encrypt certificate with HTTP/3 support right?

Or are there other constraints/requirements/steps to follow?

Ok so with Ploi, your server needs to be created after May 2024, if it's not, it wont automatically allow you.

This guide, shows you how you can do it manually: https://ploi.io/documentation/server/setting-up-http3-with-nginx-on-ubuntu

You do not need to request a fresh SSL certificate, this is unrelated.