458614 - Java Applet load error

Status: RESOLVED WORKSFORME

(Core Graveyard :: Plug-ins, defect)

Description

[Eddy Nigg (StartCom)]

Attachment: Error message after failure to load.

When using the FileManager Applet as provided by Webmin an error occurs and the applet fails to load. Latest working version is current FF2, FF3 fails. 

- Status bar shows "Applet FileManager notinited".
- Connection is via secured site on non-default port (like port 4567).

Attaching error messages and screen shot.

Comment 1

[Eddy Nigg (StartCom)]

Attachment: Error Popup message after failure to load the applet.

Comment 2

[Samuel Sidler (old account; do not CC)]

Comment on attachment 341835 [details]
Error message after failure to load.

Approval flags are for patches you want to land on the branch.

Comment 3

[Samuel Sidler (old account; do not CC)]

Also, is this a Linux bug you're reporting? The JEP (Java Embedding Plugin) only applies to Mac OS X.

Comment 4

[Matthias Versen [:Matti]]

Does changing browser.cache.disk_cache_ssl to true makes it working ?

Comment 5

[Eddy Nigg (StartCom)]

Oooops. I didn't knew exactly which "Java Something" component to choose, so this sounded about right...apparently not. Please move to matching component. 
Yes, this behavior is on Linux, not tested on other platforms, might apply too.

BTW, this is with the following JVM, but applies to current release and older JVM releases as well:

Java(TM) SE Runtime Environment (build 1.6.0_10-beta-b25)
Java HotSpot(TM) Server VM (build 11.0-b12, mixed mode)

Comment 6

[Eddy Nigg (StartCom)]

(In reply to comment #4)
> Does changing browser.cache.disk_cache_ssl to true makes it working ?
No

Comment 7

[Samuel Sidler (old account; do not CC)]

-> Core::Plug-ins for now.

Comment 8

[Eddy Nigg (StartCom)]

I opened this bug after the short discussion on bug 458545. Changing network
settings doesn't help either (not likely related I think).

BTW, I have no clue why all the output of "UlteoVNC" is in the error message,
but it's not related. A clean session doesn't have any effect.

Comment 9

[Steven Michaud [:smichaud] (Retired)]

Eddy:  You haven't provided specific steps to reproduce this bug.  Please do so (using the webmin site, or something on the webmit site).

Comment 10

[Eddy Nigg (StartCom)]

Webmin is a commonly used web based application for managing Linux servers (remotely). One of the standard components is the Java based FileManager (Applet). Using it previously crashed FF3 or failed to load until shutting the browser, these days it creates an error.

In order to reproduce it, install Webmin on a Linux server and navigate with FF3 to the FileManager.

Comment 11

[Kenneth Russell]

I work on the Java Plug-In at Sun Microsystems. Can you try to determine whether this is a bug on the Firefox or Java Plug-In side by switching between the classic Java Plug-In (libjavaplugin_oji.so) and the new Java Plug-In (libnpjp2.so)? If the error occurs only with the new Java Plug-In, it is likely a regression on the Java side. If it occurs with both versions of the Java Plug-In in Firefox 3, but does not occur in Firefox 2 with the classic Java Plug-In (which is the only version Firefox 2 supports), it is likely a regression on the Firefox side.

Comment 12

[Eddy Nigg (StartCom)]

It happens with both libraries. Actually I didn't knew about the new one and only used the classic one always. Checked now also the new one and the only difference was that FF this time crashed :-)
Attaching the bug report as well...

To confirm, this applet works with FF2 (and previous), old and new Java plugins fail to load, error or crash. (Stupid me, I thought somebody will have reported this issue already..I'm pretty bad in searching existing bugs, should have reported it much earlier since I ran FF3 nightlies).

Comment 13

[Eddy Nigg (StartCom)]

Attachment: Crash output

Comment 14

[Steven Michaud [:smichaud] (Retired)]

(In reply to comment #10)

Anybody know of a publicly available URL that demos Webmin?

We (myself and other potential testers) would appreciate being able to avoid the trouble of having to set up Webmin ourselves, just to test for this bug.

Comment 15

[Eddy Nigg (StartCom)]

Unfortunately I can't give access to the servers I've got. If you have a Linux box (even on a VM), it should be fairly easy to install the Webmin RPM or DEB package. From there accessing the file manager is a snap...

Comment 16

[Eddy Nigg (StartCom)]

To my surprise the Webmin file manger Java applet worked today with version Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.3) Gecko/2008092416 Firefox/3.0.3

I have no clue what changed, but it works. Resolving WORKSFORME...