Cognitive Services CustomVision SDK

[Jesper Hoegsdal]

I have an MVC ASP.NET website with multiple projects. In a separate project, to the web project, I have a service which is using the SDK Microsoft.Cognitive.CustomVision.Training version 1.2.0 https://www.nuget.org/packages/Microsoft.Cognitive.CustomVision.Training/1.2.0.

I initiate the Training API object like this:

new TrainingApi { ApiKey = <my API Key> }


The code above is called from an action call in one of my controllers.

In another project I have an Azure WebJob. When I deploy the above code to Azure the WebJob fails to run with the following error:


Microsoft.Azure.WebJobs.Host.FunctionInvocationException: Exception while executing function: Functions.ProcessQueueMessage ---> System.Net.Http.HttpRequestException: An error occurred while sending the request. ---> System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a send. ---> System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host

at System.Net.Sockets.Socket.EndReceive(IAsyncResult asyncResult)

at System.Net.Sockets.NetworkStream.EndRead(IAsyncResult asyncResult)

--- End of inner exception stack trace ---

at System.Net.TlsStream.EndWrite(IAsyncResult asyncResult)

at System.Net.PooledStream.EndWrite(IAsyncResult asyncResult)

at System.Net.ConnectStream.WriteHeadersCallback(IAsyncResult ar)

--- End of inner exception stack trace ---

at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)

at System.Net.Http.HttpClientHandler.GetResponseCallback(IAsyncResult ar)

--- End of inner exception stack trace ---

at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()

at PayCompliment.Service.Utilities.Progress.<CommunicateProgressAsync>d__2.MoveNext() in D:\home\site\repository\PayCompliment.Service\Utilities\Progress.cs:line 43

--- End of stack trace from previous location where exception was thrown ---

at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

at System.Runtime.CompilerServices.TaskAwaiter.GetResult()

at PayCompliment.WebJobs.Functions.<ProcessQueueMessage>d__2.MoveNext()

--- End of stack trace from previous location where exception was thrown ---

at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

at Microsoft.Azure.WebJobs.Host.Executors.FunctionInvoker`1.<InvokeAsync>d__8.MoveNext()

--- End of stack trace from previous location where exception was thrown ---

at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.<InvokeAsync>d__22.MoveNext()

--- End of stack trace from previous location where exception was thrown ---

at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)

at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.<ExecuteWithWatchersAsync>d__21.MoveNext()

--- End of stack trace from previous location where exception was thrown ---

at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.<ExecuteWithLoggingAsync>d__19.MoveNext()

--- End of stack trace from previous location where exception was thrown ---

at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)

at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.<ExecuteWithLoggingAsync>d__13.MoveNext()

--- End of inner exception stack trace ---



This error occurs even though the WebJob is not using the Training API. When I remove the code

new TrainingApi { ApiKey = <my API Key> }


it works just fine.

I’m a bit puzzled of why this happens and not sure where to debug.

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