The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

'DefaultChannelPipeline.TailContext.SkipFlags' hides inherited member 'AbstractChannelHandlerContext.SkipFlags'. Use the new keyword if hiding was intended.

'DefaultChannelPipeline.HeadContext.SkipFlags' hides inherited member 'AbstractChannelHandlerContext.SkipFlags'. Use the new keyword if hiding was intended.

Because this call is not awaited, execution of the current method continues before the call is completed. Consider applying the 'await' operator to the result of the call.

Re-throwing caught exception changes stack information (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca2200)

Do not use Assert.True(false, message) to fail a test. Use Assert.Fail(message) instead. (https://xunit.net/xunit.analyzers/rules/xUnit2020)

Because this call is not awaited, execution of the current method continues before the call is completed. Consider applying the 'await' operator to the result of the call.

Do not use Assert.True(false, message) to fail a test. Use Assert.Fail(message) instead. (https://xunit.net/xunit.analyzers/rules/xUnit2020)

Test methods should not use blocking task operations, as they can cause deadlocks. Use an async test method and await instead. (https://xunit.net/xunit.analyzers/rules/xUnit1031)