Bug in WebChart when IPv6

[PTV]

Hi,

I always get a System.NotSupportedException when I open a ASP site containing a WebChart (v2).
The TempChart property is set to File and the registry values "ShareFolder" and "VirtualShare" are OK .
When I start the web application in Visual Studio 2005 in debug mode everything works fine.
The folder settings (permissions to read and write) are correct, too.
Maybe the problem is my Vista 64x (IIS 7.0) in combination with the WebChart.
The exception is thrown before first WebCharts AfterDraw event is risen.
I have absolutly no idea what else I could try.... I spend 3 days with this issue.......

Thanks for your help !


The stacktrace:

[System.NotSupportedException: The given path's format is not supported.]
System.Security.Util.StringExpressionSet.CanonicalizePath(String path, Boolean needFullPath) +127
System.Security.Util.StringExpressionSet.CreateListFromExpressions(String[] str, Boolean needFullPath) +329
System.Security.Permissions.FileIOPermission.AddPathList(FileIOPermissionAccess access, AccessControlActions control, String[] pathListOrig, Boolean checkForDuplicates, Boolean needFullPath, Boolean copyPathList) +105
System.Security.Permissions.FileIOPermission..ctor(FileIOPermissionAccess access, AccessControlActions control, String[] pathList, Boolean checkForDuplicates, Boolean needFullPath) +54
System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy) +677
System.IO.FileStream..ctor(String path, FileMode mode) +64
Steema.TeeChart.Export.ImageExportFormat.Save(String FileName) +29
Steema.TeeChart.Web.WebChart.CreatePictureFile(HtmlTextWriter writer) +1426
Steema.TeeChart.Web.WebChart.Render(HtmlTextWriter output) +10
System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +25
System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +121
System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +22
System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +199
System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +20
System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer) +59
System.Web.UI.HtmlControls.HtmlForm.Render(HtmlTextWriter output) +68
System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +25
System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +121
System.Web.UI.HtmlControls.HtmlForm.RenderControl(HtmlTextWriter writer) +37
System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +199
System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +20
System.Web.UI.Page.Render(HtmlTextWriter writer) +26
System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +25
System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +121
System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +22
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2558

[PTV]

I took a look at TeeChart source code (WebChart.cs, method CreatePictureFile)
The file name is build with this code:

string fileRoot = ID.ToString() + Context.Request.UserHostAddress.ToString().Replace(".", "")
+ timeStamp.Replace(",", "").Replace("/", "").Replace(":", "").Replace(" ", "").Replace(".", "");

In my case the fileRoot value is:
WebChart1::1633628717810557595

The UserHostAddresss = ::1 and this is what causes the error. A file name must not contain ':' chars.
::1 is the IPv6 address of localhost
I´m a little bit confused why IPv6 is not considered in WebChart, but happy to found the reason...

Is this bug resolved in TeeChart v3 ? I think it´s done in a few seconds

Greetings

[Marc]

Hello,

TeeChart Version 3 code is similar for version 3. We'll check behaviour.

Re.

string fileRoot = ID.ToString() + Context.Request.UserHostAddress.ToString().Replace(".", "")
+ timeStamp.Replace(",", "").Replace("/", "").Replace(":", "").Replace(" ", "").Replace(".", "");

In my case the fileRoot value is:
WebChart1::1633628717810557595

It's not clear at first glance from your description why "::" isn't being cleaned out by the parse line (.Replace(":", "")). If you do a view source of the final generated page, could you confirm to us please that the file name still contains the ":" character.

Regards,
Marc Meumann

[PTV]

Hello,

The "::"-chars are located in the UserHostAddress, and the code there does only clean out "." and not ":".
Look at Context.Request.UserHostAddress.ToString().Replace(".", "")
The parse line (.Replace(":", "")). is executed on timeStamp not the UserHostAddress.

See:
Context.Request.UserHostAddress.ToString().Replace(".", "")
+ timeStamp.Replace....


I changed the source code to:

Context.Request.UserHostAddress.ToString().Replace(".", "").Replace(":","") + timeStamp.Replace....

Now it works fine

Regards

[Marc]

Hello,

Re. (.Replace(":", "")). is executed on timeStamp not the UserHostAddress

Yes, thanks for pointing that out, I hadn't noticed that. We'll include your modification for future versions.

Regards,
Marc