Unity IL2CPP does not work with UgCS client

[mangolas]

I'm trying to create Unity (used 2019.3.9f1) application compiled with IL2CPP which uses UgCS server client, but so far it seems like dead end.

It fails on some sort of reflection error which seems that other using protobuf-net has stumbled as well: protobuf-net/protobuf-net#521

I was hoping to work around the problem above and use standard gRPC client libraries against UgCS proto files, but that does not work either as UgCS seem to not have any standard rpc services.

So I have two questions:

1. Is there any known way to get UgCS compile with Unity IL2CPP?
2. If not, is there any way to use standard gRCP client against UgCS service?