Hi,
This is not strictly related to the Mindfusion and is probably a general problem. I am facing an issue of applet not getting initialized when I am using forms authentication in ASP.Net.
Kindly suggest.

Regards,

Vikas Kapoor

Hi,
Just now I sent the test project.

Thanks and regards,

Vikas Kapoor

Hi,

There is an "Incompatible magic value 218762506 in class file" displayed in the Java console, and we have found this report related to that message:

http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4975146

From what we can see in your Web.Config file, there is a section related to custom error headers, which leads to that error as described in the page linked above. Our guess is that when using Forms Authentication, ASP.NET changes all GET request URLs in the web application. The web server receives a request for the ".jar" but cannot find the file due to the changed URL. Then it returns a "Not found" error code, which combined with the custom error pages leads to the applet error.

Unfortunately removing the custom error pages won't help. That will just prevent the JRE from trying to load the applet, because it will recognize the "404 not found" response.

We will investigate this further in the following few days. Meanwhile, if you have more knowledge on Forms Authentication than us, you might try to add some Web.Config directive to exclude ".jar" files from the Forms Authentication mechanism.

Stoyan

Hi,

We have run this once with enabled authentication, and next time with disabled. The ASP.NET logs are below:

enabled authentication

09:27:50 127.0.0.1 GET /NetworkChart/Default.aspx 401
09:27:50 127.0.0.1 GET /NetworkChart/Default.aspx 302
09:27:57 127.0.0.1 GET /NetworkChart/login.aspx 200
09:28:00 127.0.0.1 POST /NetworkChart/login.aspx 302
09:28:02 127.0.0.1 GET /NetworkChart/Default.aspx 200
09:28:02 127.0.0.1 GET /NetworkChart/WebResource.axd 200
09:28:02 127.0.0.1 GET /NetworkChart/com/mindfusion/jdiagram/FlowChartApplet.class 401
09:28:03 127.0.0.1 GET /NetworkChart/com/mindfusion/jdiagram/FlowChartApplet.class 404
 

disabled authentication

09:33:56 127.0.0.1 GET /NetworkChart/Default.aspx 200
09:33:56 127.0.0.1 GET /NetworkChart/WebResource.axd 200
09:33:57 127.0.0.1 GET /NetworkChart/JDiagram.jar 200
09:34:14 127.0.0.1 GET /NetworkChart/Default.aspx 401
09:34:14 127.0.0.1 GET /NetworkChart/Default.aspx 200
09:34:14 127.0.0.1 GET /NetworkChart/JDiagram.jar 401
09:34:14 127.0.0.1 GET /NetworkChart/JDiagram.jar 200
 

Apparently the JRE does not download the ".jar" file at all while using authentication, but directly tries to download the class files. So we have just unzipped the .jar file in the project's folder, and now the application runs fine when using the ASP.NET server.

Unfortunately, it still has the same problem when using the VS2005 development web server. I will let you know if we find a way to run it from the development server too.

Stoyan

Hello, has there been any progress made on this?  I'd very much like to purchase the NetDiagram control for use in our upcomming project, but I'm afraid having an ASP.Net solution that can't use Forms Authentication is simply not going to cut it.

Hi,

I'm currently evaluating this control for my PhD project, and found an easy way to avoid this problem altogether.

The root folder of my web application is accessible to all, and I keep my authenticated web forms (including the ones with the diagramming applet) in the "Authenticated" folder.

You only have to put the .jar file in the root folder, and set the control's "jarlocation" property accordingly.

It just works.

Regards,
David