Polishing C# math service implementation and added an in-process mathclient mathserver test
diff --git a/src/csharp/GrpcDemo/Program.cs b/src/csharp/GrpcDemo/Program.cs
index 258762d..c442c32 100644
--- a/src/csharp/GrpcDemo/Program.cs
+++ b/src/csharp/GrpcDemo/Program.cs
@@ -12,7 +12,8 @@
 		{
 			using (Channel channel = new Channel("127.0.0.1:23456"))
 			{
-				IMathServiceClient stub = new MathServiceClientStub(channel, Timeout.InfiniteTimeSpan);
+
+				MathGrpc.IMathServiceClient stub = new MathGrpc.MathServiceClientStub(channel);
 				Examples.DivExample(stub);
 
                 Examples.FibExample(stub);