Update Kestrel Overview to 6.0 (#24079)

* Update Kestrel Overview to 6.0

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aspnetcore/fundamentals/servers/kestrel.md

@@ -28,15 +28,13 @@ Kestrel supports the following scenarios:
 
 Kestrel is supported on all platforms and versions that .NET Core supports.
 
-[View or download sample code](https://github.com/dotnet/AspNetCore.Docs/tree/main/aspnetcore/fundamentals/servers/kestrel/samples/5.x) ([how to download](xref:index#how-to-download-a-sample))
-
 ## Get started
 
-ASP.NET Core project templates use Kestrel by default when not hosted with IIS. In *Program.cs*, the <xref:Microsoft.Extensions.Hosting.GenericHostBuilderExtensions.ConfigureWebHostDefaults%2A> method calls <xref:Microsoft.AspNetCore.Hosting.WebHostBuilderKestrelExtensions.UseKestrel%2A>:
+ASP.NET Core project templates use Kestrel by default when not hosted with IIS. In *Program.cs*, the <xref:Microsoft.AspNetCore.Builder.WebApplication.CreateBuilder%2A?displayProperty=nameWithType> method calls <xref:Microsoft.AspNetCore.Hosting.WebHostBuilderKestrelExtensions.UseKestrel%2A>:
 
-:::code language="csharp" source="kestrel/samples/5.x/KestrelSample/Program.cs" id="snippet_DefaultBuilder" highlight="8":::
+:::code language="csharp" source="kestrel/samples/6.x/KestrelSample/Program.cs" id="snippet_CreateBuilder" highlight="1":::
 
-For more information on building the host, see the *Set up a host* and *Default builder settings* sections of <xref:fundamentals/host/generic-host#set-up-a-host>.
+For more information on configuring `WebApplication` and `WebApplicationBuilder`, see <xref:fundamentals/minimal-apis>.
 
 ## Optional client certificates
 

aspnetcore/fundamentals/servers/kestrel/http3.md

@@ -49,7 +49,7 @@ HTTP/3 isn't currently supported on macOS and may be available in a future relea
 
 HTTP/3 is not enabled by default. Add configuration to *Program.cs* to enable HTTP/3.
 
-[!code-csharp[](samples/6.x/Http3Sample/Program.cs?name=snippet_UseHttp3&highlight=7-8)]
+:::code language="csharp" source="samples/6.x/KestrelSample/Snippets/Program.cs" id="snippet_Http3" highlight="7-8":::
 
 The preceding code configures port 5001 to:
 

aspnetcore/fundamentals/servers/kestrel/samples/6.x/Http3Sample/Http3Sample.csproj

@@ -1,7 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk.Web">
-
-  <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
-  </PropertyGroup>
-
-</Project>

aspnetcore/fundamentals/servers/kestrel/samples/6.x/Http3Sample/Program.cs

@@ -1,22 +0,0 @@
-using System;
-using System.Net;
-using System.Threading.Tasks;
-using Microsoft.AspNetCore.Builder;
-using Microsoft.AspNetCore.Hosting;
-using Microsoft.AspNetCore.Server.Kestrel.Core;
-
-#region snippet_UseHttp3
-var builder = WebApplication.CreateBuilder(args);
-builder.WebHost.ConfigureKestrel((context, options) =>
-{
-    options.ListenAnyIP(5001, listenOptions =>
-    {
-        // Use HTTP/3
-        listenOptions.Protocols = HttpProtocols.Http1AndHttp2AndHttp3;
-        listenOptions.UseHttps();
-    });
-});
-#endregion
-await using var app = builder.Build();
-app.MapGet("/", () => "Hello World!");
-await app.RunAsync();

aspnetcore/fundamentals/servers/kestrel/samples/6.x/KestrelSample/KestrelSample.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+	<EnablePreviewFeatures>True</EnablePreviewFeatures>
+  </PropertyGroup>
+
+</Project>

aspnetcore/fundamentals/servers/kestrel/samples/6.x/KestrelSample/Program.cs

@@ -0,0 +1,8 @@
+// <snippet_CreateBuilder>
+var builder = WebApplication.CreateBuilder(args);
+var app = builder.Build();
+
+app.MapGet("/", () => "Hello World!");
+
+app.Run();
+// </snippet_CreateBuilder>

aspnetcore/fundamentals/servers/kestrel/samples/6.x/KestrelSample/Snippets/Program.cs

@@ -0,0 +1,22 @@
+using Microsoft.AspNetCore.Server.Kestrel.Core;
+
+namespace KestrelSample.Snippets;
+
+public static class Program
+{
+    public static void Http3(string[] args)
+    {
+        // <snippet_Http3>
+        var builder = WebApplication.CreateBuilder(args);
+
+        builder.WebHost.ConfigureKestrel((context, options) =>
+        {
+            options.ListenAnyIP(5001, listenOptions =>
+            {
+                listenOptions.Protocols = HttpProtocols.Http1AndHttp2AndHttp3;
+                listenOptions.UseHttps();
+            });
+        });
+        // </snippet_Http3>
+    }
+}

aspnetcore/fundamentals/servers/kestrel/samples/6.x/KestrelSample/appsettings.Development.json

@@ -0,0 +1,8 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}

aspnetcore/fundamentals/servers/kestrel/samples/6.x/KestrelSample/appsettings.json

@@ -0,0 +1,9 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*"
+}