Connection established ?

[sigmarsson]

var channel = new NamedPipeChannel(".", "MY_PIPE_NAME");
var client = new Greeter.GreeterClient(channel);

Can you check if the server is listening after you execute this ?

[cyanfish]

You can set NamedPipeChannelOptions.ConnectionTimeout and then call a method on the client and it should fail within that time if the server isn't responding.

[sigmarsson]

Splendid. Do you throw ex after that period elapses or return some err?

[cyanfish]

It should throw an RpcException with StatusCode.Unavailable.