asp.net – 如何保护应用程序池免受会话序列化异常的影响？

重现和处理这种情况是它变得更有趣的地方.

在AnyStaObjectsInSessionState中引发了终止进程的异常,其实现非常简单：

internal static bool AnyStaObjectsInSessionState(HttpSessionState session)
{
    if (session != null)
    {
        int count = session.Count;
        for (int i = 0; i < count; i++)
        {
            object obj2 = session[i];
            if (((obj2 != null) && (obj2.GetType().FullName == "System.__ComObject"))
                && (UnsafeNativeMethods.AspCompatIsApartmentComponent(obj2) != 0))
            {
                return true;
            }
        }
    }
    return false;
}

这是堆栈跟踪,显示了异常如何终止进程：

An unhandled exception occurred and the process was terminated.

Application ID: /LM/W3SVC/1/ROOT

Process ID: 4208

Exception: System.Runtime.Serialization.SerializationException

Message: The constructor to deserialize an object of type 'Lucene.Net.QueryParsers.ParseException' was not found.

StackTrace:    at System.Runtime.Serialization.ObjectManager.CompleteISerializableObject(Object obj,SerializationInfo info,StreamingContext context)
   at System.Runtime.Serialization.ObjectManager.FixupSpecialObject(ObjectHolder holder)
   at System.Runtime.Serialization.ObjectManager.DoFixups()
   at System.Runtime.Serialization.Formatters.Binary.ObjectReader.Deserialize(HeaderHandler handler,__BinaryParser serParser,Boolean fCheck,Boolean isCrossAppDomain,IMethodCallMessage methodCallMessage)
   at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream serializationStream,HeaderHandler handler,IMethodCallMessage methodCallMessage)
   at System.Web.Util.AltSerialization.ReadValueFromStream(BinaryReader reader)
   at System.Web.SessionState.SessionStateItemCollection.ReadValueFromStreamWithAssert()
   at System.Web.SessionState.SessionStateItemCollection.DeserializeItem(String name,Boolean check)
   at System.Web.SessionState.SessionStateItemCollection.DeserializeItem(Int32 index)
   at System.Web.SessionState.SessionStateItemCollection.get_Item(Int32 index)
   at System.Web.SessionState.HttpSessionStateContainer.get_Item(Int32 index)
   at System.Web.Util.AspCompatApplicationStep.AnyStaObjectsInSessionState(HttpSessionState session)
   at System.Web.HttpApplicationFactory.FireSessionOnEnd(HttpSessionState session,Object eventSource,EventArgs eventArgs)
   at System.Web.SessionState.SessionOnEndTargetWorkItem.RaiSEOnEndCallback()
   at System.Web.Util.WorkItem.CallCallbackWithAssert(WorkItemCallback callback)
   at System.Threading.ExecutionContext.runTryCode(Object userData)
   at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code,CleanupCode backoutCode,Object userData)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext,ContextCallback callback,Object state)
   at System.Threading._ThreadPoolWaitCallback.PerformWaitCallbackInternal(_ThreadPoolWaitCallback tpWaitCallBack)
   at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback(Object state)

InnerException: System.Runtime.Serialization.SerializationException

Message: The constructor to deserialize an object of type 'Lucene.Net.QueryParsers.ParseException' was not found.

StackTrace:    at System.Runtime.Serialization.ObjectManager.GetConstructor(Type t,Type[] ctorParams)
   at System.Runtime.Serialization.ObjectManager.CompleteISerializableObject(Object obj,StreamingContext context)

我们想了解两件事：

> FireSessionOnEnd何时为进程外提供程序启动,更重要的是,我们如何在未加载的开发环境中模仿它？我已经尝试降低会话超时(设置为一分钟),手动调用Abandon(),并手动调用GC.Collect(),都无济于事.
>我们是否可以捕获此步骤中发生的错误以保护应用程序池？这里引发的异常是使用Source = ASP.NET 2.0.50727.0记录的,并且没有到达global.asax中的应用程序错误处理程序.即使经过适当的检查,我们还能做些什么来防范这种情况？余额是否应用于会话绑定对象？

任何见解将不胜感激.