private static async Task Run()
{
// create gRPC channel
var channel = new Channel("localhost", 5000, ChannelCredentials.Insecure);
// register IGreeter proxy generated by ServiceModel.Grpc.DesignTime
DefaultClientFactory.AddGreeterClient();
// create IGreeter client proxy
var client = DefaultClientFactory.CreateClient <IGreeter>(channel);
var person = new Person {
FirstName = "John", SecondName = "X"
};
var greet1 = await client.SayHelloAsync(person.FirstName, person.SecondName);
Console.WriteLine(greet1);
var greet2 = await client.SayHelloToAsync(person);
Console.WriteLine(greet2);
}