command config for server, serve unknown files

util/Server/Startup.cs

@@ -1,5 +1,7 @@
 using Microsoft.AspNetCore.Builder;
+using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
 
 namespace Server
 {
@@ -8,9 +10,28 @@ namespace Server
         public void ConfigureServices(IServiceCollection services)
         { }
 
-        public void Configure(IApplicationBuilder app)
+        public void Configure(
+            IApplicationBuilder app,
+            ILoggerFactory loggerFactory,
+            IConfiguration configuration)
         {
-            app.UseFileServer();
+            loggerFactory
+                .AddConsole()
+                .AddDebug();
+
+            var serveUnknown = configuration.GetValue<bool?>("serveUnknown") ?? false;
+            if(serveUnknown)
+            {
+                app.UseStaticFiles(new StaticFileOptions
+                {
+                    ServeUnknownFileTypes = true,
+                    DefaultContentType = "application/octet-stream"
+                });
+            }
+            else
+            {
+                app.UseFileServer();
+            }
         }
     }
 }