4,817 questions
Kindly find the middleware code
Please share your recommendation.
System.ObjectDisposedException: Cannot access a disposed object. Object name: 'MemoryPool'. Asp.Net Core
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(236.8, 32%, 32%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EM%3C/text%3E%3C/svg%3E)
Mani
1
Reputation point
app.UseMiddleware(typeof(ErrorHandlingMiddleware));
app.UseMiddleware<TokenHandler>();
System.ObjectDisposedException: Cannot access a disposed object. Object name: 'MemoryPool'. at System.Buffers.MemoryPoolThrowHelper.ThrowObjectDisposedException(ExceptionArgument argument) at System.Buffers.SlabMemoryPool.Lease() at System.IO.Pipelines.Pipe.AllocateSegment(Int32 sizeHint) at System.IO.Pipelines.Pipe.AllocateWriteHeadSynchronized(Int32 sizeHint) at Microsoft.AspNetCore.Server.IIS.Core.OutputProducer.WriteAsync(ReadOnlyMemory`1 buffer, CancellationToken cancellationToken) at Microsoft.AspNetCore.Server.IIS.Core.IISHttpContext.<>c__DisplayClass335_0.<g__WriteFirstAsync|0>d.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Text.Json.JsonSerializer.WriteAsyncCore(Stream utf8Json, Object value, Type inputType, JsonSerializerOptions options, CancellationToken cancellationToken) at Microsoft.AspNetCore.Mvc.Formatters.SystemTextJsonOutputFormatter.WriteResponseBodyAsync(OutputFormatterWriteContext context, Encoding selectedEncoding) at Microsoft.AspNetCore.Mvc.Formatters.SystemTextJsonOutputFormatter.WriteResponseBodyAsync(OutputFormatterWriteContext context, Encoding selectedEncoding) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.g__Awaited|29_0TFilter,TFilterAsync at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResultExecutedContextSealed context) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.ResultNextTFilter,TFilterAsync at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.InvokeResultFilters() --- End of stack trace from previous location where exception was thrown --- at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.g__Awaited|19_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope) at Microsoft.AspNetCore.Routing.EndpointMiddleware.g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger) at DesktopEngine.Helper.TokenHandler.Invoke(HttpContext context) in C:\DesktopEngine\Helper\TokenHandler.cs:line 62 at DesktopEngine.MiddleWare.ErrorHandlingMiddleware.Invoke(HttpContext context) in C:\DesktopEngine\MiddleWare\ErrorHandlingMiddleware.cs:line 26|
How to fix this?
Developer technologies | ASP.NET | ASP.NET Core
{count} votes
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Mani 1 Reputation point
2023-01-06T05:56:45.42+00:00 On an ASP.NET Core project I have the following on Startup:
app.UseMiddleware(typeof(ErrorHandlingMiddleware));
app.UseMiddleware<TokenHandler>();
getting above exception
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 8%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
Anonymous2023-01-06T08:10:18.077+00:00 Hi @Mani ,
Please check the code in the ErrorHandlingMiddleware and TokenHandler, the MemoryPool object has disposed, so you can't access it.
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Mani 1 Reputation point
2023-01-10T08:01:58.51+00:00 -
Anonymous
2023-01-10T08:37:51.803+00:00 Hi @Mani ,
I checked your code on my side, they are works well, and cannot reproduce the problem.
I found this thread, it seems that the issue might relates the default ShutdownTimeout. You can check it.
Best regards, Dillion
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Mani 1 Reputation point
2023-01-13T13:50:07.38+00:00 We have a load balancer with 4 servers. The above exception is happening in Server 1 only. Please assist us.
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Anonymous
2023-01-31T06:25:21.5966667+00:00 We have a load balancer with 4 servers. The above exception is happening in Server 1 only. Please assist us.
Whether this issue has been solved or not? If not since this issue only happens on one server, the issue might relate the server configuration or IIS configuration. You can ask a new question with the Internet Information Services (IIS) tag.
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