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HttpListenerResponse: Unhandled exception. System.ObjectDisposedException #71364

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caoyudeng opened this issue Jun 28, 2022 · 10 comments
Open

HttpListenerResponse: Unhandled exception. System.ObjectDisposedException #71364

caoyudeng opened this issue Jun 28, 2022 · 10 comments
Labels
area-System.Net
Milestone
Future

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@caoyudeng
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caoyudeng commented Jun 28, 2022 •
edited by karelz

Description

Linux localhost.localdomain 4.18.0-193.el8.x86_64 #1 SMP Fri May 8 10:59:10 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
.Net 5.0/6.0
HttpListener.GetContext() Unhandled exception. System.ObjectDisposedException: Cannot access a disposed object.

Reproduction Steps

  1. demo
using System;
using System.Net;

namespace TestHttp
{
    class Program
    {
        static void Main(string[] args)
        {
            HttpListener oListener = new HttpListener();
            oListener.Prefixes.Add("http://*:9527/");
            oListener.Start();
            Console.WriteLine("Listening...");

            while (true)
            {
                HttpListenerContext oContext = default;
                try
                {
                    oContext = oListener.GetContext();
                }
                catch (Exception e)
                {
                    Console.WriteLine($"{e.Message}");
                }

                var oRequest = oContext.Request;
                var oResponse = oContext.Response;

                string responseString = "<HTML><BODY> Hello world!</BODY></HTML>";
                byte[] buffer = System.Text.Encoding.UTF8.GetBytes(responseString);
                oResponse.ContentLength64 = buffer.Length;
                System.IO.Stream output = oResponse.OutputStream;
                output.Write(buffer, 0, buffer.Length);
                output.Close();
            }

            oListener.Stop();
        }
    }
}
  1. Postman: Send extremely long Get requests(300+kb)

Expected behavior

no exception.

Actual behavior

  • linux .NET 5
Unhandled exception. System.ObjectDisposedException: Cannot access a disposed object.
Object name: 'System.Net.HttpListenerResponse'.
   at System.Net.HttpListenerResponse.CheckDisposed()
   at System.Net.HttpListenerResponse.<>c.<Close>b__74_0(IAsyncResult iar)
   at System.Net.LazyAsyncResult.Complete(IntPtr userToken)
   at System.Net.ContextAwareResult.CompleteCallback()
   at System.Net.ContextAwareResult.<>c.<Complete>b__15_0(Object s)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Net.ContextAwareResult.Complete(IntPtr userToken)
   at System.Net.LazyAsyncResult.ProtectedInvokeCallback(Object result, IntPtr userToken)
   at System.Net.Sockets.BaseOverlappedAsyncResult.CompletionCallback(Int32 numBytes, SocketError errorCode)
   at System.Net.Sockets.OverlappedAsyncResult.CompletionCallback(Int32 numBytes, Byte[] socketAddress, Int32 socketAddressSize, SocketFlags receivedFlags, SocketError errorCode)
   at System.Net.Sockets.SocketAsyncContext.BufferMemorySendOperation.InvokeCallback(Boolean allowPooling)
   at System.Net.Sockets.SocketAsyncContext.AsyncOperation.<>c.<TryCancel>b__18_0(Object o)
   at System.Threading.QueueUserWorkItemCallbackDefaultContext.Execute()
   at System.Threading.ThreadPoolWorkQueue.Dispatch()
   at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback()
  • linux .NET 6
Object name: 'System.Net.HttpListenerResponse'.
   at System.Net.HttpListenerResponse.CheckDisposed()
   at System.Net.HttpListenerResponse.<>c.<Close>b__74_0(IAsyncResult iar)
   at System.Threading.Tasks.TaskToApm.TaskAsyncResult.InvokeCallback()
   at System.Threading.Tasks.AwaitTaskContinuation.<>c.<.cctor>b__17_0(Object state)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.Tasks.AwaitTaskContinuation.RunCallback(ContextCallback callback, Object state, Task& currentTask)
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Task.<>c.<ThrowAsync>b__127_1(Object state)
   at System.Threading.QueueUserWorkItemCallbackDefaultContext.Execute()
   at System.Threading.ThreadPoolWorkQueue.Dispatch()
   at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart()
   at System.Threading.Thread.StartCallback()
Unhandled exception. System.ObjectDisposedException: Cannot access a disposed object.
Object name: 'System.Net.HttpListenerResponse'.
   at System.Net.HttpListenerResponse.CheckDisposed()
   at System.Net.HttpListenerResponse.<>c.<Close>b__74_0(IAsyncResult iar)
   at System.Threading.Tasks.TaskToApm.TaskAsyncResult.InvokeCallback()
   at System.Threading.Tasks.AwaitTaskContinuation.<>c.<.cctor>b__17_0(Object state)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.Tasks.AwaitTaskContinuation.RunCallback(ContextCallback callback, Object state, Task& currentTask)
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Task.<>c.<ThrowAsync>b__127_1(Object state)
   at System.Threading.QueueUserWorkItemCallbackDefaultContext.Execute()
   at System.Threading.ThreadPoolWorkQueue.Dispatch()
   at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart()
   at System.Threading.Thread.StartCallback()

====================================================================

Regression?

No response

Known Workarounds

No response

Configuration

No response

Other information

No response
@ghost ghost added the untriaged New issue has not been triaged by the area owner label Jun 28, 2022
@ghost
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ghost commented Jun 28, 2022

Tagging subscribers to this area: @dotnet/ncl
See info in area-owners.md if you want to be subscribed.

Issue Details

Description

Linux localhost.localdomain 4.18.0-193.el8.x86_64 #1 SMP Fri May 8 10:59:10 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
HttpListener.GetContext() Unhandled exception. System.ObjectDisposedException: Cannot access a disposed object.

Reproduction Steps

Send extremely long Get requests

Expected behavior

==============================================================

Actual behavior

Unhandled exception. System.ObjectDisposedException: Cannot access a disposed object.
Object name: 'System.Net.HttpListenerResponse'.
at System.Net.HttpListenerResponse.CheckDisposed()
at System.Net.HttpListenerResponse.<>c.b__74_0(IAsyncResult iar)
at System.Net.LazyAsyncResult.Complete(IntPtr userToken)
at System.Net.ContextAwareResult.CompleteCallback()
at System.Net.ContextAwareResult.<>c.b__15_0(Object s)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Net.ContextAwareResult.Complete(IntPtr userToken)
at System.Net.LazyAsyncResult.ProtectedInvokeCallback(Object result, IntPtr userToken)
at System.Net.Sockets.BaseOverlappedAsyncResult.CompletionCallback(Int32 numBytes, SocketError errorCode)
at System.Net.Sockets.OverlappedAsyncResult.CompletionCallback(Int32 numBytes, Byte[] socketAddress, Int32 socketAddressSize, SocketFlags receivedFlags, SocketError errorCode)
at System.Net.Sockets.SocketAsyncContext.BufferMemorySendOperation.InvokeCallback(Boolean allowPooling)
at System.Net.Sockets.SocketAsyncContext.AsyncOperation.<>c.b__18_0(Object o)
at System.Threading.QueueUserWorkItemCallbackDefaultContext.Execute()
at System.Threading.ThreadPoolWorkQueue.Dispatch()
at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback()

====================================================================

Regression?

No response

Known Workarounds

No response

Configuration

No response

Other information

No response

Author: caoyudeng
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Labels:

area-System.Net
Milestone: -

@davidfowl
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How long was the get request ?

@caoyudeng
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300+kb

@danmoseley
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Looks like this is .NET 5? That is out of support and not getting security fixes. Could you upgrade to .NET 6 and try again?

@caoyudeng
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linux .net 5: Unhandled exception. System.ObjectDisposedException: Cannot access a disposed object.
linux .net 6: Unhandled exception. System.ObjectDisposedException: Cannot access a disposed object.
win .net 5: no exception.

@caoyudeng
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update comment

@danmoseley
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danmoseley commented Jun 29, 2022 •
edited

Just curious as I'm not a networking person, what is a huge GET request -- a lot of headers? an enormously long URL? huge cookies? Wondering whether I could do it with curl.

@caoyudeng
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curl --location --request GET 'http://127.0.0.1:9527?content=<long url 300+kb>'

@danmoseley
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Yeah, that gives argument too long so I guess curl doesn't work for vast URL's.

@karelz
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karelz commented Jun 30, 2022

Triage: HttpListener is not in active development. We would likely take a contribution for a fix though.
This looks like a corner case scenario.

@karelz karelz added this to the Future milestone Jun 30, 2022
@karelz karelz removed the untriaged New issue has not been triaged by the area owner label Jun 30, 2022
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@davidfowl @karelz @danmoseley @caoyudeng