Re: [Jtreeview-devel] Signed applets anyone?

[vkj <ve...@gm...>]

Hi Alok,

Thanks again for your attention!

> I have not tried signing the applet. Does the unsigned version crash
> the browser, or just the signed one? Which browser with which JVM?

Only the signed version crashes the browser. Unsigned version works
perfectly. I have tested this on the following combinations:

1. IE6 on WinXP, JDK 1.5

2. Firefox 2.0.5 on opensuse linux, JDK 1.5 as well as 1.6

3. Mozilla on solaris, JDK 1.5.

4. Seamonkey on opensuse linux, JDK 1.5.

Applet launches fine and behaves perfectly until I close it. At that
point it closes the browser from which it was launched. Xterm from
which I launch browser shows the following message after browser
closes:

<start>
INTERNAL ERROR on Browser End: Plugin instance index out of bounds -17409

System error?:: Success
<end>

Numeric value in the end of first statement varies across occurrences.
It is not the process ID of either the browser process of java_vm
process.

Occasionally I also get a slightly different error:
<start>
 INTERNAL ERROR on Browser End: Pipe closed during read? State may be corrupt
System error?:: Resource temporarily unavailable
<end>

Few more details:
---
I am creating a new dialog box which causes a browser window to open.
This not possible in unsigned applets because of applet sandbox
security model. Hence I am creating a signed applet.

I first noticed the error I mentioned in this modified JTreeView. Then
I went back and signed the original applet and that too had the same
behavior. To be sure, I created a "Hello World" applet and signed it.
This does not crash the browser.

I have googled for this error message but nothing relevant is
available. Sun has fixed a bug related to this error message
("http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4935740"). That
was in Oct 2003: I am sure it must have gone into JDK distributions
(at least in 1.6), though I must admit that the information on that
bug report is teasingly similar to the error message I get.

At this point I am clueless and any pointers will be deeply
appreciated. The next step for me would be to try to attach a debugger
to the running jvm. I was hoping to learn from others' experience if
possible.

Vineet