Support https (resolves #3).

Program.cs

@@ -1,8 +1,10 @@
 using System.Net.WebSockets;
+using System.Security.Cryptography.X509Certificates;
 using System.Text;
 using Microsoft.AspNetCore.Hosting.Server;
 using Microsoft.AspNetCore.Http.Features;
 using Microsoft.AspNetCore.Server.Kestrel.Core;
+using Microsoft.AspNetCore.Server.Kestrel.Https;
 using Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets;
 using Microsoft.AspNetCore.WebSockets;
 using Microsoft.Extensions.Logging.Abstractions;
@@ -66,12 +68,39 @@ class Application : IHttpApplication<Context>
     }
 }
 
+class AppServices : IServiceProvider
+{
+    public object? GetService(Type serviceType)
+    {
+        if (serviceType == typeof(ILoggerFactory))
+            return new NullLoggerFactory();
+
+        return null;
+    }
+}
+
 class Program
 {
     static async Task Main()
     {
-        var serverOptions = new KestrelServerOptions();
-        serverOptions.ListenAnyIP(8080);
+        KestrelServerOptions serverOptions = new();
+        if (File.Exists("localhost.pfx"))
+        {
+            HttpsConnectionAdapterOptions httpsOptions = new()
+            {
+                ServerCertificate = new X509Certificate2("localhost.pfx")
+            };
+
+            serverOptions.ListenAnyIP(8080, options =>
+            {
+                options.KestrelServerOptions.ApplicationServices = new AppServices();
+                options.UseHttps(httpsOptions);
+            });
+        }
+        else
+        {
+            serverOptions.ListenAnyIP(8080);
+        }
 
         var transportOptions = new SocketTransportOptions();
         var loggerFactory = new NullLoggerFactory();
@@ -83,6 +112,7 @@ class Program
             new OptionsWrapper<KestrelServerOptions>(serverOptions), transportFactory, loggerFactory);
 
         await server.StartAsync(new Application(loggerFactory), CancellationToken.None);
+        Console.WriteLine("Server started");
         await Task.Delay(Timeout.Infinite);
     }
 }