Null returns and null parameters works in v4.5.2 but not in v5 anymore?

Hi,

Thank you for this great library!

We’ve recently updated to v5.0.2 and noticed two breaking changes, causing us to roll back to v4.5.2:

Please see this minimal reproducible example: https://github.com/Kobus-Smit/MagicOnion5-ReturnNull

1. Exception is thrown when a method returns null

   Client:

   Grpc.Core.RpcException: Status(StatusCode="Cancelled", Detail="No message returned from method.")
      at MagicOnion.UnaryResult`1.UnwrapResponse()
   

   Server:

   Grpc.AspNetCore.Server.ServerCallHandler[7]
         Error status code 'Cancelled' with detail 'No message returned from method.' raised.
   

2. Exception is thrown when a method contains a null parameter

   Client:

   Grpc.Core.RpcException: Status(StatusCode="Internal", Detail="Incomplete message.")
      at MagicOnion.Client.ResponseContext`1.UnboxResponseAsync(AsyncUnaryCall`1 boxed)
      at MagicOnion.UnaryResult`1.UnwrapResponse()
   

   Server:

   Grpc.AspNetCore.Server.ServerCallHandler[14]
         Error reading message.
         Grpc.Core.RpcException: Status(StatusCode="Internal", Detail="Incomplete message.")
            at Grpc.AspNetCore.Server.Internal.PipeExtensions.ReadSingleMessageAsync[T](PipeReader input, HttpContextServerCallContext serverCallContext, Func`2 deserializer)
   Grpc.AspNetCore.Server.ServerCallHandler[7]
         Error status code 'Internal' with detail 'Incomplete message.' raised.
   

If you change the example to v4.5.2 it works without any errors.

Any ideas or workarounds?

[mayuki]

We have released a version that fixes this problem. Your report was very helpful! Thank you!

[mayuki]

Sorry for the delay in responding. Thank you for the detailed information! We will reproduce and investigate.