How to use this with Firefox

[veso266]

Hi there, was wondering, if you were ever able to make this work on Mozilla Firefox

For the love of me I cannot find a single http2 server in C# that works in firefox

I know this implementation works: https://github.com/GoogleChromeLabs/simplehttp2server/tree/master

but nothing I was able to find in C# works in firefox

I even tried curl like this:

curl --insecure -I --http2 https://domain.local

and this is what curl had to say about it (the server does respond, but only with http 1.1 part, not http2)

HTTP/1.1 204 No Content
Server : prosjekthttp2

my plan is to integrate this into NetCoreServer if I am ever able to make it work: https://github.com/chronoxor/NetCoreServer

My example server looks like this (the certificate is signed by CA that firefox trusts, so there should be no issues there)

using System;
using System.IO;
using System.Security.Cryptography.X509Certificates;
using lib;

namespace ExampleServer
{
    class Program
    {
        static void Main(string[] args)
        {
            //Console.BufferHeight = short.MaxValue-1;

            //Creating the certificate
            var serverCertificate = new X509Certificate2("Certificate/domain.pfx", "qwerty");
            //Creating the server
            Server server = new Server("192.168.88.12", serverCertificate);
                       

            //test Get method
            server.Get("testurl", (req, res) => {
                res.Send("get from test url");
            });

            //test Post method
            server.Post("testurl", (req, res) => {
                res.Send($"post from test url, {req.BodyAsString()}");
            });

            //test sending JSON object
            server.Get("jsonobject", (req, res) =>
             {
                 res.Send("{ \"name\":\"Jone\", \"age\":39, \"car\":null }");
             });

            //test Path Variable
            server.Get("artikler/:kategori/artikkelid", (req, res) =>
            {
                int artikkelID = Int32.Parse(req.Params["artikkelid"]);
                string kategori = req.Params["kategori"];
                res.Send(Database.HentArtikkelFraDatabase(kategori, artikkelID));
            });

            server.Use("WebApp");
            //Server.UseGZip = false;
            //Server.UseDebugDirectory = true;
           
            //Server starts listening to port, and responding to webpage.
            server.Listen(443);


        }
        private static class Database
        {
            public static string HentArtikkelFraDatabase(string kategori, int artikkelID)
            {
                return $"Dette er artikkel #{artikkelID} i kategorien {kategori}, fersk fra databasen";
            }
        }
    }
}

The server works, but for some reason not HTTP2 part, the server always responds with HTTP 1.1

I use this addon: https://addons.mozilla.org/sl/firefox/addon/http-indicator/

that tells me its only HTTP 1.1

Not sure whats going on here
I also tried this: https://github.com/mynyml/http2server (quits imidiatly)
this: https://github.com/MatthewSmit/Http2Sharp
and even this: https://github.com/mynyml/http2server

nothing works, and for the love of me, I cannot figure out why