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Kinetic Jump Support » AppLife Update » General Discussion » Unable to read director.xml. hexadecimal value 0x1F, is an invalid character.

Unable to read director.xml. hexadecimal value 0x1F, is an invalid character.

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RobertMcCarter

#1 Posted : Thursday, August 19, 2010 10:30:22 PM

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Joined: 8/19/2010
Posts: 3
Location: Canada

Here is the exact stack trace I'm getting:

An exception occurred during the operation, making the result invalid. Check InnerException for exception details. ---> Kjs.AppLife.Update.Controller.ValidationException: Unable to read director.xml. ---> System.Xml.XmlException: '', hexadecimal value 0x1F, is an invalid character. Line 1, position 1.
   at System.Xml.XmlTextReaderImpl.Throw(Exception e)
   at System.Xml.XmlTextReaderImpl.Throw(String res, String[] args)
   at System.Xml.XmlTextReaderImpl.Throw(Int32 pos, String res, String[] args)
   at System.Xml.XmlTextReaderImpl.ThrowInvalidChar(Int32 pos, Char invChar)
   at System.Xml.XmlTextReaderImpl.ParseRootLevelWhitespace()
   at System.Xml.XmlTextReaderImpl.ParseDocumentContent()
   at System.Xml.XmlTextReaderImpl.Read()
   at System.Xml.XmlLoader.Load(XmlDocument doc, XmlReader reader, Boolean preserveWhitespace)
   at System.Xml.XmlDocument.Load(XmlReader reader)
   at System.Xml.XmlDocument.Load(Stream inStream)
   at Kjs.AppLife.Update.Controller.Internal.DirectorDocument.a(Stream A_0)
   --- End of inner exception stack trace ---
   --- End of inner exception stack trace ---
   at System.ComponentModel.AsyncCompletedEventArgs.RaiseExceptionIfNecessary()
   at Kjs.AppLife.Update.Controller.CheckForUpdateCompletedEventArgs.get_Result()

I've used the update URL and I can easily download the Director.xml (it's over normal HTTP). I've opened it in a binary editor and there are no occurances of the hex character 0x1F, especially not at line 1 position 1.

My code looks like this:

m_Controller.UpdateFound += OnSoftwareUpdateFound;
m_Controller.CheckForUpdateCompleted += OnCheckForUpdateCompleted;
m_Controller.DownloadUpdateCompleted += OnSoftwareUpdateDownloaded;
m_Controller.CheckForUpdateAsync();

The exception is occuring when I try and reference CheckForUpdateCompletedEventArgs .Results

Here's the code:

private static void OnCheckForUpdateCompleted(object sender, CheckForUpdateCompletedEventArgs args) {
    try {
        if( args.Result==false ) {
            const string message = "No software updates were found.";
            ApplicationMessageList.Instance.AddMessage(message);
        } //if - no updates found
    } catch( Exception e ) {
        m_Log.ErrorException("Failed to check for updates!", e);
    }//catch
}

The OnSoftwareUpdateDownloaded call-back is never called.

Any help would be greatly appreciated! I'm running on Windows 7 using VS2008 and .NET 3.5 SP1.

Thank you very much in advance,

Robert

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brianh

#2 Posted : Friday, August 20, 2010 6:57:25 AM

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Joined: 5/24/2007
Posts: 351
Location: Minnesota

Hello Robert,

Can you email your director.xml file to techsupport <at> kineticjump.com so that we can try and reproduce this? I'm sure we can determine whats going on.

Brian Haas
Kinetic Jump Software

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RobertMcCarter

#3 Posted : Friday, August 20, 2010 9:00:30 AM

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Joined: 8/19/2010
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Location: Canada

I've e-mailed the Directory.Xml file to you.
Thank you very much for your help; everything else up to this point has been very easy, this seems to be really well designed software.

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RobertMcCarter

#4 Posted : Friday, August 20, 2010 5:24:03 PM

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Joined: 8/19/2010
Posts: 3
Location: Canada

Thank you for all of your time and help Brian!!

In case anybody else experiences this, Brian and I worked together and used Fiddler to discover that the problem was (for some reason) IIS 7 was sending the XML file compressed with gzip - even though the request didn't contain any headers indicating that this was okay.

Even more bizzarely, the same IIS 7 server worked for a sample client Brian made and ran from his machine, but did not work when the request came from my machine.

At any rate, I disabled static content compression using the IIS 7 manager for the Director.Xml file, and my application now works (from my machine) as well.

Thanks again Brian!

Sincerely,

Robert

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