So, by the title you know what I'm trying to build.
I already have one gRPC server and 3 clients talking together in the same machine. The server is accessible on http://localhot:5001. Everything runs smoothly but if I run the clients on another machine they cannot access the server. So I installed IIS and placed the server there for it to get served to outside with the domain beta.server.com. I altered the hosts file on the client machine to go to the computer ip(192.168.5.49) where the server is running on IIS.
When I try to access with the browser by http i get a message saying i can only connect with a gRPC client. By https says NET::ERR_CERT_COMMON_NAME_INVALID. Maybe this is the problem...(found out after writing the rest).
By trying to connect with a gRPC client to http(http://beta.server.com) I get an error saying http/1.1 is not supported, which is true, this service works only on http2.
When try to connect to the server ip with https(https://beta.server.com) I get the error that the ssl connection could not be established. As follows:
PS C:\Users\Farm\Desktop\GrpcSierConsole\Viewer> dotnet run
Entered task
Unhandled exception. System.AggregateException: One or more errors occurred. (Status(StatusCode=Internal, Detail="Error starting gRPC call: The SSL connection could not be established, see inner exception."))
---> Grpc.Core.RpcException: Status(StatusCode=Internal, Detail="Error starting gRPC call: The SSL connection could not be established, see inner exception.")
at Grpc.Net.Client.Internal.HttpContentClientStreamReader`2.MoveNextCore(CancellationToken cancellationToken)
at Grpc.Core.AsyncStreamReaderExtensions.ReadAllAsync[T](IAsyncStreamReader`1 streamReader, CancellationToken cancellationToken)+MoveNext()
at Grpc.Core.AsyncStreamReaderExtensions.ReadAllAsync[T](IAsyncStreamReader`1 streamReader, CancellationToken cancellationToken)+System.Threading.Tasks.Sources.IValueTaskSource<System.Boolean>.GetResult()
at Viewer.Program.<>c.<<Main>b__0_0>d.MoveNext() in C:\Users\Farm\Desktop\GrpcSierConsole\viewer\Program.cs:line 24
--- End of stack trace from previous location where exception was thrown ---
at Viewer.Program.<>c.<<Main>b__0_0>d.MoveNext() in C:\Users\Farm\Desktop\GrpcSierConsole\viewer\Program.cs:line 24
--- End of inner exception stack trace ---
at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken)
at System.Threading.Tasks.Task.Wait()
at Viewer.Program.Main() in C:\Users\Farm\Desktop\GrpcSierConsole\viewer\Program.cs:line 29
The error is on line 29 on the program.cs in the server. The code I have there is the following: Line 29 is webBuilder.UseStartup():
//Additional configuration is required to successfully run gRPC on macOS.
// For instructions on how to configure Kestrel and gRPC clients on macOS, visit https://go.microsoft.com/fwlink/?linkid=2099682
public static IHostBuilder CreateHostBuilder(string[] args) =>
Host.CreateDefaultBuilder(args)
.ConfigureWebHostDefaults(webBuilder =>
{
webBuilder.UseStartup<Startup>();
});
I've tried to use the Visual Studio localhost certificate and a self signed certificate within the IIS in both the client computer and the server computer running IIS.
Also I've used this line in the client to trust all certificates:
ServicePointManager.ServerCertificateValidationCallback = delegate { return true; };
Which I got from: How to ignore the certificate check when ssl
I don't know what more to do. Anyone can help?
##################### UPDATE ######################
I've added this code to the client
var httpClientHandler = new HttpClientHandler();
// Return `true` to allow certificates that are untrusted/invalid
httpClientHandler.ServerCertificateCustomValidationCallback =
HttpClientHandler.DangerousAcceptAnyServerCertificateValidator;
var httpClient = new HttpClient(httpClientHandler);
var channel = GrpcChannel.ForAddress("https://localhost:5001",
new GrpcChannelOptions { HttpClient = httpClient });
var client = new QueueManagement.QueueManagementClient(channel);
...
Now I don't have the SSL error but this one:
PS C:\Users\Farm\Desktop\GrpcSierConsole\Viewer> dotnet run
Entered task
Unhandled exception. System.AggregateException: One or more errors occurred. (Status(StatusCode=Internal, Detail="Error starting gRPC call: An error occurred while sending the request."))
---> Grpc.Core.RpcException: Status(StatusCode=Internal, Detail="Error starting gRPC call: An error occurred while sending the request.")
at Grpc.Net.Client.Internal.HttpContentClientStreamReader`2.MoveNextCore(CancellationToken cancellationToken)
at Grpc.Core.AsyncStreamReaderExtensions.ReadAllAsync[T](IAsyncStreamReader`1 streamReader, CancellationToken cancellationToken)+MoveNext()
at Grpc.Core.AsyncStreamReaderExtensions.ReadAllAsync[T](IAsyncStreamReader`1 streamReader, CancellationToken cancellationToken)+System.Threading.Tasks.Sources.IValueTaskSource<System.Boolean>.GetResult()
at Viewer.Program.<>c.<<Main>b__0_0>d.MoveNext() in C:\Users\Farm\Desktop\GrpcSierConsole\Viewer\Program.cs:line 32
--- End of stack trace from previous location where exception was thrown ---
at Viewer.Program.<>c.<<Main>b__0_0>d.MoveNext() in C:\Users\Farm\Desktop\GrpcSierConsole\Viewer\Program.cs:line 32
--- End of inner exception stack trace ---
at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken)
at System.Threading.Tasks.Task.Wait()
at Viewer.Program.Main() in C:\Users\Farm\Desktop\GrpcSierConsole\Viewer\Program.cs:line 37
And at line 37 i have the task.wait() because this runs inside a task.
var channel = GrpcChannel.ForAddress("https://beta.server.com",
new GrpcChannelOptions { HttpClient = httpClient });
var client = new QueueManagement.QueueManagementClient(channel);
var request = client.QueueNumberChanged(new SendQueueId { QueueId = "2" });
await foreach (var response in request.ResponseStream.ReadAllAsync())
{
Console.WriteLine($"Senha {response.Number} -> fila 2");
}
});
t.Wait();
