How to enable http2 in C# Kestrel web server over plain http?

How to enable http2 in C# Kestrel web server over plain http?

To enable HTTP/2 support in a Kestrel web server using plain HTTP, you need to perform the following steps:

  • Add the Microsoft.AspNetCore.Server.Kestrel.Https NuGet package to your project, if it is not already included.

  • Configure Kestrel to use the Http2 protocol by adding the following code to your Program.cs file:

public static IWebHostBuilder CreateWebHostBuilder(string[] args) => WebHost.CreateDefaultBuilder(args) .ConfigureKestrel(options => { options.ListenAnyIP(5000, listenOptions => { listenOptions.Protocols = HttpProtocols.Http1AndHttp2; }); }) .UseStartup<Startup>();

This code configures Kestrel to listen on all network interfaces (ListenAnyIP) on port 5000 and to use both HTTP/1.1 and HTTP/2 protocols (HttpProtocols.Http1AndHttp2).

  • If you are using HTTPS, you can also enable HTTP/2 support by setting the Protocols property of the ListenOptions object to HttpProtocols.Http1AndHttp2:
public static IWebHostBuilder CreateWebHostBuilder(string[] args) => WebHost.CreateDefaultBuilder(args) .UseKestrel(options => { options.ListenAnyIP(5001, listenOptions => { listenOptions.Protocols = HttpProtocols.Http1AndHttp2; listenOptions.UseHttps("certificate.pfx", "password"); }); }) .UseStartup<Startup>();

In this example, the UseHttps method is used to configure HTTPS with a certificate and password. The Protocols property of the ListenOptions object is also set to HttpProtocols.Http1AndHttp2 to enable HTTP/2 support.

Note that HTTP/2 support requires TLS encryption, so it cannot be used over plain HTTP. If you want to use plain HTTP, you can only use HTTP/1.1.

Examples

  1. Enabling HTTP/2 in Kestrel server for plain HTTP Description: This query seeks information on how to configure the Kestrel web server in a C# application to support HTTP/2 over plain HTTP.

    // Example code to enable HTTP/2 in Kestrel server public static IWebHostBuilder CreateWebHostBuilder(string[] args) => WebHost.CreateDefaultBuilder(args) .UseKestrel(options => { options.Listen(IPAddress.Any, 80, listenOptions => { listenOptions.Protocols = HttpProtocols.Http2; }); }) .UseStartup<Startup>();

  2. Configuring Kestrel server to use HTTP/2 protocol Description: This query focuses on configuring the Kestrel server to use the HTTP/2 protocol specifically over plain HTTP.

    // Example code to configure Kestrel server for HTTP/2 public static IWebHostBuilder CreateWebHostBuilder(string[] args) => WebHost.CreateDefaultBuilder(args) .UseKestrel(options => { options.Listen(IPAddress.Any, 80, listenOptions => { listenOptions.Protocols = HttpProtocols.Http2; }); }) .UseStartup<Startup>();

  3. Using Kestrel server with HTTP/2 support in C# Description: This query aims to understand how to utilize the Kestrel web server with built-in HTTP/2 support within a C# application.

    // Example code to configure Kestrel server for HTTP/2 public static IWebHostBuilder CreateWebHostBuilder(string[] args) => WebHost.CreateDefaultBuilder(args) .UseKestrel(options => { options.ListenAnyIP(80, listenOptions => { listenOptions.Protocols = HttpProtocols.Http2; }); }) .UseStartup<Startup>();

  4. Enabling HTTP/2 support in Kestrel for plain HTTP connections Description: This query seeks information on how to enable HTTP/2 support specifically for plain HTTP connections in the Kestrel web server.

    // Example code to enable HTTP/2 in Kestrel server for plain HTTP public static IWebHostBuilder CreateWebHostBuilder(string[] args) => WebHost.CreateDefaultBuilder(args) .UseKestrel(options => { options.ListenAnyIP(80, listenOptions => { listenOptions.Protocols = HttpProtocols.Http2; }); }) .UseStartup<Startup>();

  5. Handling HTTP/2 requests in C# Kestrel server over plain HTTP Description: This query focuses on handling HTTP/2 requests specifically over plain HTTP in a C# application using the Kestrel web server.

    // Example code to handle HTTP/2 requests in Kestrel server for plain HTTP public void Configure(IApplicationBuilder app) { app.UseRouting(); // Other middleware configurations }

  6. Configuring Kestrel server for HTTP/2 with plain HTTP Description: This query seeks information on how to properly configure the Kestrel server to support HTTP/2 specifically over plain HTTP connections.

    // Example code to configure Kestrel server for HTTP/2 with plain HTTP public static IWebHostBuilder CreateWebHostBuilder(string[] args) => WebHost.CreateDefaultBuilder(args) .UseKestrel(options => { options.ListenAnyIP(80, listenOptions => { listenOptions.Protocols = HttpProtocols.Http2; }); }) .UseStartup<Startup>();

  7. Using Kestrel server with HTTP/2 over plain HTTP in C# Description: This query focuses on utilizing the Kestrel web server with HTTP/2 support over plain HTTP connections within C# applications.

    // Example code to configure Kestrel server for HTTP/2 over plain HTTP public static IWebHostBuilder CreateWebHostBuilder(string[] args) => WebHost.CreateDefaultBuilder(args) .UseKestrel(options => { options.ListenAnyIP(80, listenOptions => { listenOptions.Protocols = HttpProtocols.Http2; }); }) .UseStartup<Startup>();

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