EventHubClient in hosted Azure Function throws System.Net.Sockets.SocketException

EventHubClient in hosted Azure Function throws System.Net.Sockets.SocketException - c#

I'm having an issue with a hosted Azure Function using an EventHubClient (Mircosoft.Azure.EventHubs) in an injected wrapper class of of our making, called EventHubEventPublisher (Injected using AddTransient). The function has been up and running in Azure for the past month with no issues, but yesterday it started to throw the following exception every time a function executes that calls EventHubClient.PublishEvent().
System.Net.Sockets.SocketException:
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.EventHubs.Amqp.AmqpEventHubClient+<CreateConnectionAsync>d__32.MoveNext (Microsoft.Azure.EventHubs, Version=3.0.0.0, Culture=neutral, PublicKeyToken=7e34167dcc6d6d8c)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Amqp.FaultTolerantAmqpObject`1+<OnCreateAsync>d__6.MoveNext (Microsoft.Azure.Amqp, Version=2.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Amqp.Singleton`1+<GetOrCreateAsync>d__13.MoveNext (Microsoft.Azure.Amqp, Version=2.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Amqp.Singleton`1+<GetOrCreateAsync>d__13.MoveNext (Microsoft.Azure.Amqp, Version=2.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.EventHubs.Amqp.AmqpEventDataSender+<CreateLinkAsync>d__12.MoveNext (Microsoft.Azure.EventHubs, Version=3.0.0.0, Culture=neutral, PublicKeyToken=7e34167dcc6d6d8c)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Amqp.FaultTolerantAmqpObject`1+<OnCreateAsync>d__6.MoveNext (Microsoft.Azure.Amqp, Version=2.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Amqp.Singleton`1+<GetOrCreateAsync>d__13.MoveNext (Microsoft.Azure.Amqp, Version=2.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Amqp.Singleton`1+<GetOrCreateAsync>d__13.MoveNext (Microsoft.Azure.Amqp, Version=2.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.EventHubs.Amqp.AmqpEventDataSender+<OnSendAsync>d__10.MoveNext (Microsoft.Azure.EventHubs, Version=3.0.0.0, Culture=neutral, PublicKeyToken=7e34167dcc6d6d8c)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.EventHubs.Amqp.AmqpEventDataSender+<OnSendAsync>d__10.MoveNext (Microsoft.Azure.EventHubs, Version=3.0.0.0, Culture=neutral, PublicKeyToken=7e34167dcc6d6d8c)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.EventHubs.EventDataSender+<SendAsync>d__7.MoveNext (Microsoft.Azure.EventHubs, Version=3.0.0.0, Culture=neutral, PublicKeyToken=7e34167dcc6d6d8c)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.EventHubs.EventHubClient+<SendAsync>d__22.MoveNext (Microsoft.Azure.EventHubs, Version=3.0.0.0, Culture=neutral, PublicKeyToken=7e34167dcc6d6d8c)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Scrubbed_Name.Events.EventHubEventPublisher+<PublishEvent>d__5.MoveNext (Scrubbed_Name, Version=0.1.66.0, Culture=neutral, PublicKeyToken=null)
I'm hoping to get some insight as to what's going on in this stack trace. Our hosted Event Hub's metrics doesn't suggest that we're hitting the quota on Active Users, but restarting the Functions app in its entirety seems to have solved the issue for now; events are being processed. I'd like to be able to handle this situation gracefully in the future, or avoid it outright.
Other facts about the code
EventHubEventPublisher implements IDisposable, and the Dispose function closes the client connection, but the Azure Function itself does not call Dispose on it once all the work that needs to be done is completed. It was my understanding that an Azure Function should deallocate its resources once the function has completed. Is perhaps the way it's being injected as a Transient a problem?

Related

Console.WriteLine sometimes throws the handle is invalid exception

I have an Azure function which has this line of code:
Console.WriteLine("Name: " + list.Count());
This line sometimes throws this exception:
The handle is invalid.
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor+d__26.MoveNext (Microsoft.Azure.WebJobs.Host, Version=3.0.34.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionExecutor.cs:352)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor+d__18.MoveNext (Microsoft.Azure.WebJobs.Host, Version=3.0.34.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionExecutor.cs:108)
Inner exception System.IO.IOException handled at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw:
at System.ConsolePal+WindowsConsoleStream.Write (System.Console, Version=4.1.2.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a)
at System.IO.StreamWriter.Flush (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.IO.StreamWriter.WriteLine (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.IO.TextWriter+SyncTextWriter.WriteLine (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Console.WriteLine (System.Console, Version=4.1.2.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a)
Should we ignore this or don't use console class in Azure function?

This happens when the console window has been closed, or if the console output has been redirected to a file or other stream.
In azure functions, you should not use the Console.WriteLine. instead, you should use ILogger to write logs. you can write logs like log.LogInformation("Name: " + list.Count());, this will write output to the Azure Functions runtime log. you can also view logs in the azure portal.
Edit: As #Fildor suggested in comment, you could use log.LogInformation("Name: {count}", list.Count());

Asp.net core app random route stops working until i recycle app pool

We are experiencing an odd issue with our production webserver.
Random route from our app stops working, and this is the error we find in our app insights log.
It's always just one route, but never the same.
Issue disappears after we recycle app pool
We are using asp.net core 2.0.1 with .net framework.
Any ideas regarding this issue?
System.IO.IOException:
at System.IO.__Error.WinIOError (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at System.IO.FileStream.EndRead (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at System.IO.FileStream.ReadCore (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at System.IO.FileStream.Read (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at System.Security.Cryptography.HashAlgorithm.ComputeHash (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at Microsoft.AspNetCore.Razor.Language.StreamSourceDocument.ComputeChecksum (Microsoft.AspNetCore.Razor.Language, Version=2.0.3.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at Microsoft.AspNetCore.Razor.Language.StreamSourceDocument..ctor (Microsoft.AspNetCore.Razor.Language, Version=2.0.3.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
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at Microsoft.AspNetCore.Razor.Language.RazorTemplateEngine.CreateCodeDocument (Microsoft.AspNetCore.Razor.Language, Version=2.0.3.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at Microsoft.AspNetCore.Mvc.Razor.Internal.RazorViewCompiler.CompileAndEmit (Microsoft.AspNetCore.Mvc.Razor, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at Microsoft.AspNetCore.Mvc.Razor.Internal.RazorViewCompiler.CreateCacheEntry (Microsoft.AspNetCore.Mvc.Razor, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at Microsoft.AspNetCore.Builder.RouterMiddleware+<Invoke>d__4.MoveNext (Microsoft.AspNetCore.Routing, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at Microsoft.AspNetCore.Mvc.Razor.Internal.DefaultRazorPageFactoryProvider.CreateFactory (Microsoft.AspNetCore.Mvc.Razor, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at Microsoft.AspNetCore.Mvc.Razor.RazorViewEngine.CreateCacheResult (Microsoft.AspNetCore.Mvc.Razor, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at Microsoft.AspNetCore.Mvc.Razor.RazorViewEngine.OnCacheMiss (Microsoft.AspNetCore.Mvc.Razor, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at Microsoft.AspNetCore.Mvc.Razor.RazorViewEngine.LocatePageFromViewLocations (Microsoft.AspNetCore.Mvc.Razor, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at Microsoft.AspNetCore.Mvc.ViewFeatures.HtmlHelper+<RenderPartialCoreAsync>d__60.MoveNext (Microsoft.AspNetCore.Mvc.ViewFeatures, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at Microsoft.AspNetCore.Builder.Extensions.MapMiddleware+<Invoke>d__3.MoveNext (Microsoft.AspNetCore.Http.Abstractions, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at Microsoft.AspNetCore.Mvc.ViewFeatures.HtmlHelper+<PartialAsync>d__57.MoveNext (Microsoft.AspNetCore.Mvc.ViewFeatures, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware+<Invoke>d__6.MoveNext (Microsoft.AspNetCore.Diagnostics, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at Microsoft.AspNetCore.Mvc.Rendering.HtmlHelperPartialExtensions.Partial (Microsoft.AspNetCore.Mvc.ViewFeatures, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at Microsoft.AspNetCore.Mvc.Rendering.HtmlHelperPartialExtensions.Partial (Microsoft.AspNetCore.Mvc.ViewFeatures, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at AspNetCore._Areas_Mobile_Views_Timeline_Index_cshtml+<ExecuteAsync>d__7.MoveNext (jasjbnoj.s3b, Version=0.0.0.0, Culture=neutral, PublicKeyToken=nulljasjbnoj.s3b, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null: C:\Webovi\index_new\Areas\Mobile\Views\Timeline\Index.cshtmljasjbnoj.s3b, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null: 48)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at Microsoft.AspNetCore.Mvc.Razor.RazorView+<RenderPageCoreAsync>d__16.MoveNext (Microsoft.AspNetCore.Mvc.Razor, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at Microsoft.AspNetCore.Mvc.Razor.RazorView+<RenderPageAsync>d__15.MoveNext (Microsoft.AspNetCore.Mvc.Razor, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at Microsoft.AspNetCore.Mvc.Razor.RazorView+<RenderAsync>d__14.MoveNext (Microsoft.AspNetCore.Mvc.Razor, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
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at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at Microsoft.AspNetCore.Mvc.ViewFeatures.ViewExecutor+<ExecuteAsync>d__21.MoveNext (Microsoft.AspNetCore.Mvc.ViewFeatures, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at Microsoft.AspNetCore.Mvc.ViewResult+<ExecuteResultAsync>d__26.MoveNext (Microsoft.AspNetCore.Mvc.ViewFeatures, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker+<InvokeResultAsync>d__19.MoveNext (Microsoft.AspNetCore.Mvc.Core, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker+<InvokeNextResultFilterAsync>d__24.MoveNext (Microsoft.AspNetCore.Mvc.Core, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Rethrow (Microsoft.AspNetCore.Mvc.Core, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Next (Microsoft.AspNetCore.Mvc.Core, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker+<InvokeNextResourceFilter>d__22.MoveNext (Microsoft.AspNetCore.Mvc.Core, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Rethrow (Microsoft.AspNetCore.Mvc.Core, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Next (Microsoft.AspNetCore.Mvc.Core, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker+<InvokeFilterPipelineAsync>d__17.MoveNext (Microsoft.AspNetCore.Mvc.Core, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker+<InvokeAsync>d__15.MoveNext (Microsoft.AspNetCore.Mvc.Core, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at Microsoft.AspNetCore.Builder.RouterMiddleware+<Invoke>d__4.MoveNext (Microsoft.AspNetCore.Routing, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at Microsoft.AspNetCore.Builder.Extensions.MapMiddleware+<Invoke>d__3.MoveNext (Microsoft.AspNetCore.Http.Abstractions, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
at Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware+<Invoke>d__6.MoveNext (Microsoft.AspNetCore.Diagnostics, Version=2.0.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)

I've tried to update to asp.net core 2.2, but that did not help.
Then I read that the asp.net core team removed the need for kestrel in 2.2, so I decided to switch to in-process hosting by adding .UseIIS() in my builder.
Not sure exactly why, but problem disappeared after that.

List container groups using Azure management APIs fails with System.Net.Sockets.SocketException

I'm using some Azure management nuget packages such as the Azure Container Instances libraries for .NET for months.
A few days ago I noticed some errors when trying to do something simple such as getting a list of container instances - for example:
using Microsoft.Azure.Management.ContainerInstance.Fluent;
using Microsoft.Azure.Management.ContainerInstance.Models;
using Microsoft.Azure.Management.Fluent;
using Microsoft.Azure.Management.ResourceManager.Fluent.Core;
var groups = await _azure.ContainerGroups.ListAsync(loadAllPages: true);
Error message is the following:
The operation was canceled. Unable to read data from the transport connection: The I/O operation has been aborted because of either a thread exit or an application request. The I/O operation has been aborted because of either a thread exit or an application request
This code is being executed on an Azure function but the same error occurs when I'm running it on my machine.
Stack trace of the exception is the following when running the code on an Azure function:
System.Threading.Tasks.TaskCanceledException:
at Microsoft.Rest.RetryDelegatingHandler+d__15.MoveNext (Microsoft.Rest.ClientRuntime, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Management.ResourceManager.Fluent.Core.ProviderRegistrationDelegatingHandler+d__4.MoveNext (Microsoft.Azure.Management.ResourceManager.Fluent, Version=1.0.0.61, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Management.ResourceManager.Fluent.Core.HttpLoggingDelegatingHandler+d__7.MoveNext (Microsoft.Azure.Management.ResourceManager.Fluent, Version=1.0.0.61, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Management.ResourceManager.Fluent.Core.UserAgentDelegatingHandler+d__5.MoveNext (Microsoft.Azure.Management.ResourceManager.Fluent, Version=1.0.0.61, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable1+ConfiguredTaskAwaiter.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Net.Http.HttpClient+d__62.MoveNext (System.Net.Http, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable1+ConfiguredTaskAwaiter.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Management.ContainerInstance.Fluent.ContainerGroupsOperations+d__7.MoveNext (Microsoft.Azure.Management.ContainerInstance.Fluent, Version=1.0.0.61, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable1+ConfiguredTaskAwaiter.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Management.ContainerInstance.Fluent.ContainerGroupsOperationsExtensions+d__2.MoveNext (Microsoft.Azure.Management.ContainerInstance.Fluent, Version=1.0.0.61, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Management.ResourceManager.Fluent.Core.ResourceActions.IndexableRefreshableWrapper2+d__8.MoveNext (Microsoft.Azure.Management.ResourceManager.Fluent, Version=1.0.0.61, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Management.ContainerInstance.Fluent.ContainerGroupImpl+d__37.MoveNext (Microsoft.Azure.Management.ContainerInstance.Fluent, Version=1.0.0.61, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Management.ContainerInstance.Fluent.ContainerGroupsImpl+d__21.MoveNext (Microsoft.Azure.Management.ContainerInstance.Fluent, Version=1.0.0.61, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Management.ResourceManager.Fluent.Core.PagedCollection2+<>c__DisplayClass21_0+<b__0>d.MoveNext (Microsoft.Azure.Management.ResourceManager.Fluent, Version=1.0.0.61, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Management.ResourceManager.Fluent.Core.PagedCollection2+d__21.MoveNext (Microsoft.Azure.Management.ResourceManager.Fluent, Version=1.0.0.61, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Management.ResourceManager.Fluent.Core.PagedCollection2+d__16.MoveNext (Microsoft.Azure.Management.ResourceManager.Fluent, Version=1.0.0.61, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Management.ContainerInstance.Fluent.ContainerGroupsImpl+d__20.MoveNext (Microsoft.Azure.Management.ContainerInstance.Fluent, Version=1.0.0.61, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Polly.Retry.AsyncRetryEngine+d__01.MoveNext (Polly, Version=7.0.0.0, Culture=neutral, PublicKeyToken=c8a3ffc3f8f825cc)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Polly.AsyncPolicy+d__211.MoveNext (Polly, Version=7.0.0.0, Culture=neutral, PublicKeyToken=c8a3ffc3f8f825cc)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Pyra.Automation.BuildAgents.Monitor.Commands.CreateBuildAgentInstanceCommand+d__8.MoveNext (Pyra.Automation.BuildAgents.Monitor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=nullPyra.Automation.BuildAgents.Monitor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: F:\Agent02\w\961\s\src\Pyra.Automation.BuildAgents.Monitor\Commands\CreateBuildAgentInstanceCommand.csPyra.Automation.BuildAgents.Monitor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: 128)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Pyra.Automation.BuildAgents.Monitor.Commands.CreateBuildAgentInstanceCommand+d__7.MoveNext (Pyra.Automation.BuildAgents.Monitor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=nullPyra.Automation.BuildAgents.Monitor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: F:\Agent02\w\961\s\src\Pyra.Automation.BuildAgents.Monitor\Commands\CreateBuildAgentInstanceCommand.csPyra.Automation.BuildAgents.Monitor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: 78)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Pyra.Automation.BuildAgents.Monitor.Function.BuildAgentSchedulerFunction+d__1.MoveNext (Pyra.Automation.BuildAgents.Monitor.Function, Version=1.0.0.0, Culture=neutral, PublicKeyToken=nullPyra.Automation.BuildAgents.Monitor.Function, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: F:\Agent02\w\961\s\src\Pyra.Automation.BuildAgents.Monitor.Function\BuildAgentSchedulerFunction.csPyra.Automation.BuildAgents.Monitor.Function, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: 89)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Pyra.Automation.BuildAgents.Monitor.Function.BuildAgentSchedulerFunction+d__0.MoveNext (Pyra.Automation.BuildAgents.Monitor.Function, Version=1.0.0.0, Culture=neutral, PublicKeyToken=nullPyra.Automation.BuildAgents.Monitor.Function, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: F:\Agent02\w\961\s\src\Pyra.Automation.BuildAgents.Monitor.Function\BuildAgentSchedulerFunction.csPyra.Automation.BuildAgents.Monitor.Function, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: 50)
Inner exception System.IO.IOException handled at Microsoft.Rest.RetryDelegatingHandler+d__15.MoveNext:
at System.Net.Sockets.Socket+AwaitableSocketAsyncEventArgs.ThrowException (System.Net.Sockets, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a)
at System.Net.Sockets.Socket+AwaitableSocketAsyncEventArgs.GetResult (System.Net.Sockets, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a)
at System.Runtime.CompilerServices.ConfiguredValueTaskAwaitable1+ConfiguredValueTaskAwaiter.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Net.Security.SslStreamInternal+<g__InternalFillBufferAsync|38_0>d1.MoveNext (System.Net.Security, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.ConfiguredValueTaskAwaitable1+ConfiguredValueTaskAwaiter.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Net.Security.SslStreamInternal+d__341.MoveNext (System.Net.Security, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.ConfiguredValueTaskAwaitable1+ConfiguredValueTaskAwaiter.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Net.Http.HttpConnection+d__61.MoveNext (System.Net.Http, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a)
Inner exception System.Net.Sockets.SocketException handled at System.Net.Sockets.Socket+AwaitableSocketAsyncEventArgs.ThrowException:
I've tried to update the nuget packages to use the latest version available but the same error occurs, what am I missing here?

I'm not able to reproduce the issue anymore but I'll post answer anyway, hopefully it might help someone with similar issues.
I believe this issue was caused by some messed up container instances.
Some months ago I had a similar issue - I wasn't able to see the statuses of some container groups in the Azure Portal, there was just a - (dash) instead. After deleting these containers everything was working as expected.
Conclusion:
If listing container instances stop working go to the Azure Portal and check for containers with status Failed, Terminated, - etc. Delete these groups and try to list the containers again

Seems to me that there's an internal error the code is throwing and you're not receiving it:
Async void methods have different error-handling semantics. When an exception is thrown out of an async Task or async Task method, that exception is captured and placed on the Task object. With async void methods, there is no Task object, so any exceptions thrown out of an async void method will be raised directly on the SynchronizationContext that was active when the async void method started.
Take a look if your method is returning a Task:
public static async Task UseMethodWithAsyncVoid()
{
try
{
await MethodWithException();
}
catch (Exception e)
{
Console.WriteLine("Ex Message" + e.Message);
}
}

Azure Storage Account - error 403 forbidden

I have an Azure Function that should process files in a storage account container. The Azure Function should be triggered every day. But once or twice a week I see that some Files in the container are not processed: (At the beginning 401 files from 600 are not processed, because of error 403)
As I read here in Stackoverflow. It is because of SAS token time skew. Is it possible without a big changing in my code, I solve this problem?
my code:
CloudStorageAccount sa;
CloudStorageAccount.TryParse("MyConnString", out sa);
_blobClient = sa.CreateCloudBlobClient();
ICloudBlob sourceBlob = _blobClient.GetBlobReferenceFromServer(new Uri(BlobUrl));
Update
Message Exception while executing function:
process_files_by_http_trigger_activity The remote server returned an
error: (403) Forbidden. The remote server returned an error: (403)
Forbidden.
Call Stack:
Microsoft.Azure.WebJobs.Host.FunctionInvocationException: at
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw
(mscorlib, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=b7xxxx934e089) at
Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor+d__16.MoveNext
(Microsoft.Azure.WebJobs.Host, Version=2.4.0.0, Culture=neutral,
PublicKeyToken=31bfxxxx64e35) at
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess
(mscorlib, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=b7xxxx934e089) at
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification
(mscorlib, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=b7xxxx934e089) at
Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor+d__13.MoveNext
(Microsoft.Azure.WebJobs.Host, Version=2.4.0.0, Culture=neutral,
PublicKeyToken=31bfxxxx64e35) Inner exception
Microsoft.WindowsAzure.Storage.StorageException handled at
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw: at
Microsoft.WindowsAzure.Storage.Core.Executor.Executor.ExecuteSync
(Microsoft.WindowsAzure.Storage, Version=7.2.1.0, Culture=neutral,
PublicKeyToken=31bfxxxx64e35Microsoft.WindowsAzure.Storage,
Version=7.2.1.0, Culture=neutral, PublicKeyToken=31bfxxxx64e35:
c:\Program Files
(x86)\Jenkins\workspace\release_dotnet_master\Lib\ClassLibraryCommon\Core\Executor\Executor.csMicrosoft.WindowsAzure.Storage,
Version=7.2.1.0, Culture=neutral, PublicKeyToken=31bfxxxx64e35:
604) at
Microsoft.WindowsAzure.Storage.Blob.CloudBlobClient.GetBlobReferenceFromServer
(Microsoft.WindowsAzure.Storage, Version=7.2.1.0, Culture=neutral,
PublicKeyToken=31bfxxxx64e35Microsoft.WindowsAzure.Storage,
Version=7.2.1.0, Culture=neutral, PublicKeyToken=31bfxxxx64e35:
c:\Program Files
(x86)\Jenkins\workspace\release_dotnet_master\Lib\ClassLibraryCommon\Blob\CloudBlobClient.csMicrosoft.WindowsAzure.Storage,
Version=7.2.1.0, Culture=neutral, PublicKeyToken=31bfxxxx64e35:
563) at
Microsoft.WindowsAzure.Storage.Blob.CloudBlobClient.GetBlobReferenceFromServer
(Microsoft.WindowsAzure.Storage, Version=7.2.1.0, Culture=neutral,
PublicKeyToken=31bfxxxx64e35Microsoft.WindowsAzure.Storage,
Version=7.2.1.0, Culture=neutral, PublicKeyToken=31bfxxxx64e35:
c:\Program Files
(x86)\Jenkins\workspace\release_dotnet_master\Lib\ClassLibraryCommon\Blob\CloudBlobClient.csMicrosoft.WindowsAzure.Storage,
Version=7.2.1.0, Culture=neutral, PublicKeyToken=31bfxxxx64e35:
546) at
bip.dev.afu.inbound.we.process_xz_files_by_http_trigger.XzFileMove
(bip.dev.afu.inbound.we, Version=1.0.0.0, Culture=neutral,
PublicKeyToken=null) at
bip.dev.afu.inbound.we.process_xz_files_by_http_trigger+d__10.MoveNext
(bip.dev.afu.inbound.we, Version=1.0.0.0, Culture=neutral,
PublicKeyToken=null) at
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess
(mscorlib, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=b7xxxx934e089) at
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification
(mscorlib, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=b7xxxx934e089) at
Microsoft.Azure.WebJobs.Host.Executors.VoidTaskMethodInvoker2+<InvokeAsync>d__2.MoveNext
(Microsoft.Azure.WebJobs.Host, Version=2.4.0.0, Culture=neutral,
PublicKeyToken=31bfxxxx64e35) at
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess
(mscorlib, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=b7xxxx934e089) at
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification
(mscorlib, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=b7xxxx934e089) at
Microsoft.Azure.WebJobs.Host.Executors.FunctionInvoker2+d__9.MoveNext
(Microsoft.Azure.WebJobs.Host, Version=2.4.0.0, Culture=neutral,
PublicKeyToken=31bfxxxx64e35) at
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess
(mscorlib, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=b7xxxx934e089) at
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification
(mscorlib, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=b7xxxx934e089) at
Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor+d__24.MoveNext
(Microsoft.Azure.WebJobs.Host, Version=2.4.0.0, Culture=neutral,
PublicKeyToken=31bfxxxx64e35) at
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess
(mscorlib, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=b7xxxx934e089) at
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification
(mscorlib, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=b7xxxx934e089) at
Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor+d__23.MoveNext
(Microsoft.Azure.WebJobs.Host, Version=2.4.0.0, Culture=neutral,
PublicKeyToken=31bfxxxx64e35) at
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess
(mscorlib, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=b7xxxx934e089) at
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification
(mscorlib, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=b7xxxx934e089) at
Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor+d__22.MoveNext
(Microsoft.Azure.WebJobs.Host, Version=2.4.0.0, Culture=neutral,
PublicKeyToken=31bfxxxx64e35) at
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess
(mscorlib, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=b7xxxx934e089) at
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification
(mscorlib, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=b7xxxx934e089) at
System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (mscorlib,
Version=4.0.0.0, Culture=neutral, PublicKeyToken=b7xxxx934e089)
at
Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor+d__16.MoveNext
(Microsoft.Azure.WebJobs.Host, Version=2.4.0.0, Culture=neutral,
PublicKeyToken=31bfxxxx64e35) Inner exception
System.Net.WebException handled at
Microsoft.WindowsAzure.Storage.Core.Executor.Executor.ExecuteSync:
at System.Net.HttpWebRequest.GetResponse (System, Version=4.0.0.0,
Culture=neutral, PublicKeyToken=b7xxxx934e089) at
Microsoft.WindowsAzure.Storage.Core.Executor.Executor.ExecuteSync
(Microsoft.WindowsAzure.Storage, Version=7.2.1.0, Culture=neutral,
PublicKeyToken=31bfxxxx64e35Microsoft.WindowsAzure.Storage,
Version=7.2.1.0, Culture=neutral, PublicKeyToken=31bfxxxx64e35:
c:\Program Files
(x86)\Jenkins\workspace\release_dotnet_master\Lib\ClassLibraryCommon\Core\Executor\Executor.csMicrosoft.WindowsAzure.Storage,
Version=7.2.1.0, Culture=neutral, PublicKeyToken=3xxxxx6ad364e35:
677)

Start with the basics, An Azure Storage connection string uses following format. Please make sure you have provided a right account name and key pair for the connection string. If you set account n1 and account key for account n2, it will cause the exception.
DefaultEndpointsProtocol=https;AccountName=[accountName];AccountKey=[accountKey];EndpointSuffix=core.windows.net
I would suggest you to print you connection string and see if it is the same all the time as you mentioned in the App.setting.
Trace.Write(ConnectionString);
Please ensure that the current date time of your system/app instance is correct.
The storage services ensure that a request is no older than 15 minutes by the time it reaches the service. This guards against certain security attacks, including replay attacks. When this check fails, the server returns response code 403 (Forbidden).
Hope it helps.Feel free to tag me in your conversation for any additional help.

Correct use of app and local settings with Azure Function Bindings?

I am developing some Azure Functions in Visual Studio 2017 that use EventHub, ServiceBus, SignalR, CosmosDB and other bindings. Many of the bindings have a Connection or ConnectionStringSetting argument that is supposed to be set to the name of the setting that holds the connection string.
For example:
[EventHubTrigger(eventHubName: "the-hub-name", Connection = "MySettingName")] TheRequestEventType request
I have the MySettingName value in the Values section of my local.settings.json. This all works fine for running and debugging locally.
When I added MySettingName to the App Settings on the Azure Functions App and deployed the App things do not work. When the app starts I get exceptions stating that the connection string is null: Error indexing method 'MyEventHandler.Run' Value cannot be null. Parameter name: connectionString (full call stack provided below).
What is the correct way to use the Connection or ConnectionStringSetting arguments?
Is there some naming convention that must be used like APPSETTING_MySettingName?
I've been searching for documentation on this and using App Settings with Function Apps in general but not found anything that address this, sorry in advance if I've missed something obvious.
Microsoft.Azure.WebJobs.Host.Indexers.FunctionIndexingException:
at Microsoft.Azure.WebJobs.Host.Indexers.FunctionIndexer+<IndexMethodAsync>d__17.MoveNext (Microsoft.Azure.WebJobs.Host, Version=3.0.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35Microsoft.Azure.WebJobs.Host, Version=3.0.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Indexers\FunctionIndexer.csMicrosoft.Azure.WebJobs.Host, Version=3.0.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: 175)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.WebJobs.Host.Indexers.FunctionIndexer+<IndexTypeAsync>d__13.MoveNext (Microsoft.Azure.WebJobs.Host, Version=3.0.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35Microsoft.Azure.WebJobs.Host, Version=3.0.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Indexers\FunctionIndexer.csMicrosoft.Azure.WebJobs.Host, Version=3.0.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: 103)
Inner exception System.ArgumentNullException handled at Microsoft.Azure.WebJobs.Host.Indexers.FunctionIndexer+<IndexMethodAsync>d__17.MoveNext:
at Microsoft.WindowsAzure.Storage.CloudStorageAccount.Parse (Microsoft.WindowsAzure.Storage, Version=9.3.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at Microsoft.Azure.EventHubs.Processor.EventProcessorHost..ctor (Microsoft.Azure.EventHubs.Processor, Version=2.1.0.0, Culture=neutral, PublicKeyToken=7e34167dcc6d6d8c)
at Microsoft.Azure.WebJobs.EventHubs.EventHubOptions.GetEventProcessorHost (Microsoft.Azure.WebJobs.EventHubs, Version=3.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35Microsoft.Azure.WebJobs.EventHubs, Version=3.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Extensions.EventHubs\Config\EventHubOptions.csMicrosoft.Azure.WebJobs.EventHubs, Version=3.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: 247)
at Microsoft.Azure.WebJobs.EventHubs.EventHubTriggerAttributeBindingProvider.TryCreateAsync (Microsoft.Azure.WebJobs.EventHubs, Version=3.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35Microsoft.Azure.WebJobs.EventHubs, Version=3.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Extensions.EventHubs\Triggers\EventHubTriggerAttributeBindingProvider.csMicrosoft.Azure.WebJobs.EventHubs, Version=3.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: 68)
at Microsoft.Azure.WebJobs.Host.Triggers.CompositeTriggerBindingProvider+<TryCreateAsync>d__2.MoveNext (Microsoft.Azure.WebJobs.Host, Version=3.0.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35Microsoft.Azure.WebJobs.Host, Version=3.0.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Triggers\CompositeTriggerBindingProvider.csMicrosoft.Azure.WebJobs.Host, Version=3.0.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: 22)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.WebJobs.Host.Indexers.FunctionIndexer+<IndexMethodAsyncCore>d__18.MoveNext (Microsoft.Azure.WebJobs.Host, Version=3.0.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35Microsoft.Azure.WebJobs.Host, Version=3.0.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Indexers\FunctionIndexer.csMicrosoft.Azure.WebJobs.Host, Version=3.0.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: 190)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.WebJobs.Host.Indexers.FunctionIndexer+<IndexMethodAsync>d__17.MoveNext (Microsoft.Azure.WebJobs.Host, Version=3.0.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35Microsoft.Azure.WebJobs.Host, Version=3.0.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Indexers\FunctionIndexer.csMicrosoft.Azure.WebJobs.Host, Version=3.0.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: 167)

You did it right that adding those Connection String settings(e.g. MySettingName and corresponding value)to the App Settings on the Azure Functions. There's no naming convention either.
The null value exception probably results from missing AzureWebJobsStorage in App Settings, this storage account connection string is required for all triggers except Http trigger. The storage account must be a general-purpose one that supports blobs, queues, and tables.

The fact that it works when debugging locally means, your local.settings.json is correct and has "MySettingName" configured correctly.
As far as I can understand, it doesn't work when you deploy to Azure. When running in Azure, it doesn't look at local.seetings.json. Instead Azure looks at "Application Settings" of your function app.
So edit application settings and add "MySettingName" there. That should solve your issue.

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