add asp.net core 7 section (#26747)

aspnetcore/fundamentals/servers/kestrel/http2.md

@@ -5,12 +5,46 @@ description: Learn about using HTTP/2 with Kestrel, the cross-platform web serve
 monikerRange: '>= aspnetcore-5.0'
 ms.author: riande
 ms.custom: mvc
-ms.date: 05/04/2020
+ms.date: 08/15/2022
 uid: fundamentals/servers/kestrel/http2
 ---
 
 # Use HTTP/2 with the ASP.NET Core Kestrel web server
 
+:::moniker range="< aspnetcore-7.0"
+
+[HTTP/2](https://httpwg.org/specs/rfc7540.html) is available for ASP.NET Core apps if the following base requirements are met:
+
+* Operating system&dagger;
+  * Windows Server 2016/Windows 10 or later&Dagger;
+  * Linux with OpenSSL 1.0.2 or later (for example, Ubuntu 16.04 or later)
+* Target framework: .NET Core 2.2 or later
+* [Application-Layer Protocol Negotiation (ALPN)](https://tools.ietf.org/html/rfc7301#section-3) connection
+* TLS 1.2 or later connection
+
+&dagger;HTTP/2 will be supported on macOS in a future release.
+&Dagger;Kestrel has limited support for HTTP/2 on Windows Server 2012 R2 and Windows 8.1. Support is limited because the list of supported TLS cipher suites available on these operating systems is limited. A certificate generated using an Elliptic Curve Digital Signature Algorithm (ECDSA) may be required to secure TLS connections.
+
+If an HTTP/2 connection is established, [HttpRequest.Protocol](xref:Microsoft.AspNetCore.Http.HttpRequest.Protocol%2A) reports `HTTP/2`.
+
+Starting with .NET Core 3.0, HTTP/2 is enabled by default. For more information on configuration, see the [Kestrel HTTP/2 limits](xref:fundamentals/servers/kestrel/options#http2-limits) and [ListenOptions.Protocols](xref:fundamentals/servers/kestrel/endpoints#listenoptionsprotocols) sections.
+
+## Advanced HTTP/2 features
+
+Additional HTTP/2 features in Kestrel support gRPC, including support for response trailers and sending reset frames.
+
+### Trailers
+
+[!INCLUDE[](~/includes/trailers.md)]
+
+### Reset
+
+[!INCLUDE[](~/includes/reset.md)]
+
+:::moniker-end
+
+:::moniker range=">= aspnetcore-7.0"
+
 [HTTP/2](https://httpwg.org/specs/rfc7540.html) is available for ASP.NET Core apps if the following base requirements are met:
 
 * Operating system&dagger;
@@ -38,3 +72,5 @@ Additional HTTP/2 features in Kestrel support gRPC, including support for respon
 ### Reset
 
 [!INCLUDE[](~/includes/reset.md)]
+
+:::moniker-end