[jira] [Resolved] (LOG4NET-363) System.ObjectDisposedException thrown in log4net.Layout.XmlLayoutSchemaLog4j.FormatXml ln 47

["Stefan Bodewig (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LOG4NET-363?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Stefan Bodewig resolved LOG4NET-363.
------------------------------------

       Resolution: Duplicate
    Fix Version/s: 1.2.12

> System.ObjectDisposedException thrown in log4net.Layout.XmlLayoutSchemaLog4j.FormatXml ln 47
> --------------------------------------------------------------------------------------------
>
>                 Key: LOG4NET-363
>                 URL: https://issues.apache.org/jira/browse/LOG4NET-363
>             Project: Log4net
>          Issue Type: Bug
>          Components: Appenders
>    Affects Versions: 1.2.11
>         Environment: IIS 7.0
>            Reporter: David Perlman
>            Priority: Minor
>              Labels: nullpointerexception
>             Fix For: 1.2.12
>
>
> On line 47 in XmlLayoutSchemaLog4j there is a reference to the LoggingEvent.Identity property. If this call is made after the web request is finished (from a different thread) the logger throws (below the exception is my sad workaround):
> log4net:ERROR [UdpAppender] ErrorCode: WriteFailure. Unable to send logging event to remote host ------- on port ----.
> System.ObjectDisposedException: Safe handle has been closed
>    at System.Runtime.InteropServices.SafeHandle.DangerousAddRef(Boolean& success)
>    at Microsoft.Win32.Win32Native.GetTokenInformation(SafeTokenHandle TokenHandle, UInt32 TokenInformationClass, SafeLocalAllocHandle TokenInformation, UInt32 TokenInformationLength, UInt32& ReturnLength)
>    at System.Security.Principal.WindowsIdentity.GetTokenInformation(SafeTokenHandle tokenHandle, TokenInformationClass tokenInformationClass)
>    at System.Security.Principal.WindowsIdentity.get_User()
>    at System.Security.Principal.WindowsIdentity.GetName()
>    at System.Security.Principal.WindowsIdentity.get_Name()
>    at log4net.Core.LoggingEvent.get_Identity()
>    at log4net.Layout.XmlLayoutSchemaLog4j.FormatXml(XmlWriter writer, LoggingEvent loggingEvent)
>    at log4net.Layout.XmlLayoutBase.Format(TextWriter writer, LoggingEvent loggingEvent)
>    at log4net.Appender.AppenderSkeleton.RenderLoggingEvent(LoggingEvent loggingEvent)
>    at log4net.Appender.UdpAppender.Append(LoggingEvent loggingEvent)
> Workaround -----
> // translate identity name
>             // When logging on a thread that continues (asynchronously) after the web request is finished this will throw the logging
>             try
>             {
>                 if (loggingEvent.Identity != null &&
>                     loggingEvent.Identity.Length > 0 &&
>                     loggingEvent.LookupProperty(LoggingEvent.IdentityProperty) == null)
>                 {
>                     loggingEvent.GetProperties()[LoggingEvent.IdentityProperty] = loggingEvent.Identity ?? "identity lost";
>                 }
>             }
>             catch { }            



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