Asp.Net, WebSocket, Http2, Support

https://learn.microsoft.com/en-us/aspnet/core/fundamentals/websockets?view=aspnetcore-7.0

Http/2 WebSockets support

Using WebSockets over HTTP/2 takes advantage of new features such as:

• Header compression.
• Multiplexing, which reduces the time and resources needed when making multiple requests to the server.

These supported features are available in Kestrel on all HTTP/2 enabled platforms. The version negotiation is automatic in browsers and Kestrel, so no new APIs are needed.

.NET 7 introduced Websockets over HTTP/2 support for Kestrel, the SignalR JavaScript client, and SignalR with Blazor WebAssembly.

 Note

HTTP/2 WebSockets use CONNECT requests rather than GET, so your own routes and controllers may need updating. For more information, see Add HTTP/2 WebSockets support for existing controllers in this article.

Chrome and Edge have HTTP/2 WebSockets enabled by default, and you can enable it in FireFox on the about:config page with the network.http.spdy.websockets flag.

https://learn.microsoft.com/en-us/aspnet/core/fundamentals/websockets?view=aspnetcore-7.0#add-http2-websockets-support-for-existing-controllers

Samples

https://github.com/dotnet/AspNetCore.Docs/tree/main/aspnetcore/fundamentals/websockets/samples

Samples How 

https://learn.microsoft.com/en-us/aspnet/core/introduction-to-aspnet-core?view=aspnetcore-7.0#how-to-download-a-sample

WebSockets

https://learn.microsoft.com/en-us/aspnet/core/fundamentals/websockets?view=aspnetcore-7.0#sample-app