Also in the library space, the release candidate features ZLibCompressionOptions and BrotliCompressionOptions types to set the algorithm-specific compression level and compression strategy for users who need more fine-tuned settings than the existing CompressionLevel supports. New compression options are designed to allow for expanding options moving forward. In another library change, LogLevel.Trace events logged by HttpClientFactory no longer include header values by default.
For .NET MAUI in .NET 9, the focus is to improve product quality, including expanding test coverage, end-to-end scenario testing, and bug fixing. These improvements were emphasized in the seven preview releases of .NET 9. The VS Code extension now features improvements to HorizontalTextAlignment.justify so that it horizontally aligns text in Labels.
For ASP.NET Core, the RC bulletin notes that preview 6, from July 15, added initial support for SignalR distributed tracing. RC1 improves signal tracing with the SignalR client having an ActivitySource named Microsoft.AspNetCore.SignalR.Client. Hub invocations now create a client span. Also, hub invocations from the client to the server now support context propagation. Propagating the trace context enables true distributed tracing, Microsoft said. It is possible now to see invocations flow from the client to the server and back.