static async Task Main(string[] args)
{
// reference when certs come knocking to validate your door (and find 'there is no door')
// https://docs.microsoft.com/en-us/aspnet/core/security/enforcing-ssl?view=aspnetcore-5.0#trust-the-aspnet-core-https-development-certificate-on-windows-and-macos
// OR; just ignore the darn cert validation error by allowing untrusted certs
var httpHandler = new HttpClientHandler();
// Return `true` to allow certificates that are untrusted/invalid
httpHandler.ServerCertificateCustomValidationCallback =
HttpClientHandler.DangerousAcceptAnyServerCertificateValidator;
AppContext.SetSwitch("System.Net.Http.SocketsHttpHandler.Http2UnencryptedSupport", true);
// on macOS, we expect utter failure when using HTTP/2 w/TLS, you'll get:
// Unable to bind to https://localhost:5001 on the IPv4 loopback interface: 'HTTP/2 over TLS is not supported on macOS due to missing ALPN support.'.
// look here: https://docs.microsoft.com/en-us/aspnet/core/grpc/troubleshoot?view=aspnetcore-5.0#call-a-grpc-service-with-an-untrustedinvalid-certificate
//
// so: we turn to plain 'ol HTTP without anything
using var channel = GrpcChannel.ForAddress("http://localhost:5000",
new GrpcChannelOptions { HttpHandler = httpHandler });
var client = new Greeter.GreeterClient(channel);
var reply = await client.BlendItForMeAsync(new HelloRequest { Name = "Stupid" });
Console.WriteLine("Greeting: " + reply.Message);
Console.WriteLine("Press any stupid key to exit...");
Console.ReadKey();
}