ASP.NET Core updates in .NET 9 Preview 7

[danroth27]

Here's a summary of what's new in ASP.NET Core in this preview release:

• SignalR supports trimming and Native AOT
• Microsoft.AspNetCore.OpenApi supports trimming and Native AOT
• Improvements to transformer registration APIs in Microsoft.AspNetCore.OpenApi
• Call ProducesProblem and ProducesValidationProblem on route groups
• Construct Problem and ValidationProblem result types with IEnumerable<KeyValuePair<string, object?>> values
• OpenIdConnectHandler support for Pushed Authorization Requests (PAR)
• Data Protection support for deleting keys
• Customize Kestrel named pipe endpoints
• Improved Kestrel connection metrics
• Opt-out of HTTP metrics on certain endpoints and requests
• ExceptionHandlerMiddleware option to choose the status code based on the exception

ASP.NET Core updates in .NET 9 Preview 7:

• Release notes
• What's new in ASP.NET Core in .NET 9 documentation.
• Breaking changes
• Roadmap

.NET 9 Preview 7:

• Discussion
• Release notes