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| title | author | description | monikerRange | ms.author | ms.custom | ms.date | uid |
|---|---|---|---|---|---|---|---|
| Use ASP.NET Core with HTTP/2 on IIS | rick-anderson | Learn how to use HTTP/2 features with IIS. | >= aspnetcore-5.0 | riande | mvc | 01/13/2020 | host-and-deploy/iis/protocols |
Use ASP.NET Core with HTTP/2 on IIS
HTTP/2 is supported with ASP.NET Core in the following IIS deployment scenarios:
- Windows Server 2016 or later / Windows 10 or later
- IIS 10 or later
- TLS 1.2 or later connection
- When hosting out-of-process: Public-facing edge server connections use HTTP/2, but the reverse proxy connection to the Kestrel server uses HTTP/1.1.
For an in-process deployment when an HTTP/2 connection is established, HttpRequest.Protocol reports HTTP/2. For an out-of-process deployment when an HTTP/2 connection is established, HttpRequest.Protocol reports HTTP/1.1.
For more information on the in-process and out-of-process hosting models, see xref:host-and-deploy/aspnet-core-module.
HTTP/2 is enabled by default for HTTPS/TLS connections. Connections fall back to HTTP/1.1 if an HTTP/2 connection isn't established. For more information on HTTP/2 configuration with IIS deployments, see HTTP/2 on IIS.
Advanced HTTP/2 features to support gRPC
Additional HTTP/2 features in IIS support gRPC, including support for response trailers and sending reset frames.
Requirements to run gRPC on IIS:
- In-process hosting.
- Windows 11 Build 22000 or later, Windows Server 2022 Build 20348 or later.
- TLS 1.2 or later connection.