I have an API developed in .NET Core 2.1 and while doing stress testing, it reports a Kestrel web server error and I don't know what it is.
The error message is: Reading the request body timed out due to data arriving too slowly. See MinRequestBodyDataRate.
I leave the call stack I see in the Application Insights log.
Microsoft.AspNetCore.Server.Kestrel.Core.BadHttpRequestException: at Microsoft.AspNetCore.Server.Kestrel.Core.BadHttpRequestException.Throw (Microsoft.AspNetCore.Server.Kestrel.Core, Version=2.1.7.0, Culture=neutral, PublicKeyToken=adb9793829ddae60) at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.Http1MessageBody+d__4.MoveNext (Microsoft.AspNetCore.Server.Kestrel.Core, Version=2.1.7.0, Culture=neutral, PublicKeyToken=adb9793829ddae60) at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at System.IO.Pipelines.PipeCompletion.ThrowLatchedException (System.IO.Pipelines, Version=4.0.0.1, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51) at System.IO.Pipelines.Pipe.GetReadResult (System.IO.Pipelines, Version=4.0.0.1, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51) at System.IO.Pipelines.Pipe.GetReadAsyncResult (System.IO.Pipelines, Version=4.0.0.1, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51) at System.IO.Pipelines.Pipe+DefaultPipeReader.GetResult (System.IO.Pipelines, Version=4.0.0.1, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51) at System.Runtime.CompilerServices.ValueTaskAwaiter
1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.MessageBody+<ReadAsync>d__21.MoveNext (Microsoft.AspNetCore.Server.Kestrel.Core, Version=2.1.7.0, Culture=neutral, PublicKeyToken=adb9793829ddae60) 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.ValueTaskAwaiter1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpRequestStream+d__22.MoveNext (Microsoft.AspNetCore.Server.Kestrel.Core, Version=2.1.7.0, Culture=neutral, PublicKeyToken=adb9793829ddae60) 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.TaskAwaiter1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at Microsoft.AspNetCore.WebUtilities.FileBufferingReadStream+<ReadAsync>d__35.MoveNext (Microsoft.AspNetCore.WebUtilities, Version=2.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60) 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.TaskAwaiter1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at Microsoft.AspNetCore.WebUtilities.StreamHelperExtensions+d__3.MoveNext (Microsoft.AspNetCore.WebUtilities, Version=2.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60) 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.AspNetCore.Mvc.Formatters.JsonInputFormatter+d__17.MoveNext (Microsoft.AspNetCore.Mvc.Formatters.Json, Version=2.1.3.0, Culture=neutral, PublicKeyToken=adb9793829ddae60) 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.TaskAwaiter1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at Microsoft.AspNetCore.Mvc.ModelBinding.Binders.BodyModelBinder+<BindModelAsync>d__7.MoveNext (Microsoft.AspNetCore.Mvc.Core, Version=2.1.16.0, Culture=neutral, PublicKeyToken=adb9793829ddae60) 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.AspNetCore.Mvc.ModelBinding.ParameterBinder+<BindModelAsync>d__11.MoveNext (Microsoft.AspNetCore.Mvc.Core, Version=2.1.16.0, Culture=neutral, PublicKeyToken=adb9793829ddae60) 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.TaskAwaiter1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at Microsoft.AspNetCore.Mvc.Internal.ControllerBinderDelegateProvider+<>c__DisplayClass0_0+<g__Bind|0>d.MoveNext (Microsoft.AspNetCore.Mvc.Core, Version=2.1.16.0, Culture=neutral, PublicKeyToken=adb9793829ddae60) 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.AspNetCore.Mvc.Internal.ControllerActionInvoker+d__13.MoveNext (Microsoft.AspNetCore.Mvc.Core, Version=2.1.16.0, Culture=neutral, PublicKeyToken=adb9793829ddae60) 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.AspNetCore.Mvc.Internal.ResourceInvoker+d__23.MoveNext (Microsoft.AspNetCore.Mvc.Core, Version=2.1.16.0, Culture=neutral, PublicKeyToken=adb9793829ddae60) at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Rethrow (Microsoft.AspNetCore.Mvc.Core, Version=2.1.16.0, Culture=neutral, PublicKeyToken=adb9793829ddae60) at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Next (Microsoft.AspNetCore.Mvc.Core, Version=2.1.16.0, Culture=neutral, PublicKeyToken=adb9793829ddae60) at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker+d__18.MoveNext (Microsoft.AspNetCore.Mvc.Core, Version=2.1.16.0, Culture=neutral, PublicKeyToken=adb9793829ddae60) 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.AspNetCore.Mvc.Internal.ResourceInvoker+d__16.MoveNext (Microsoft.AspNetCore.Mvc.Core, Version=2.1.16.0, Culture=neutral, PublicKeyToken=adb9793829ddae60) 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.AspNetCore.Builder.RouterMiddleware+d__4.MoveNext (Microsoft.AspNetCore.Routing, Version=2.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60) 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.AspNetCore.Authentication.AuthenticationMiddleware+d__6.MoveNext (Microsoft.AspNetCore.Authentication, Version=2.1.2.0, Culture=neutral, PublicKeyToken=adb9793829ddae60) 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.AspNetCore.StaticFiles.StaticFileMiddleware+d__7.MoveNext (Microsoft.AspNetCore.StaticFiles, Version=2.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60) 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 quodem_qcore_gamification.api.Startup+<>c+<b__5_0>d.MoveNext (quodem-qcore-gamification.api, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null) 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.AspNetCore.Cors.Infrastructure.CorsMiddleware+d__8.MoveNext (Microsoft.AspNetCore.Cors, Version=2.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60) 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.AspNetCore.Server.IISIntegration.IISMiddleware+d__13.MoveNext (Microsoft.AspNetCore.Server.IISIntegration, Version=2.1.7.0, Culture=neutral, PublicKeyToken=adb9793829ddae60) at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e) at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpProtocol+d__188`1.MoveNext (Microsoft.AspNetCore.Server.Kestrel.Core, Version=2.1.7.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
The error message is: Reading the request body timed out due to data arriving too slowly. See MinRequestBodyDataRate.
I suggest you can take a look at the source code of KestrelHttpServer and add the following code in Configure method in the startup file:
app.UseKestrel(opt =>
{
opt.Limits.MinRequestBodyDataRate = null;
})