User-Agent: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.3) Gecko/20030312 Build Identifier: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.3) Gecko/20030312 When JRE 1.4.1_02 is installed and a small (4.6K) signed applet is loaded, the "Warning - Security" prompt appears, the user accepts the certificate, and the applet runs correctly. Under the same circumstances, when a larger (28.3K) signed applet is loaded, the browser hangs after painting the frame of the "Warning - Security" pop-up window. At first I thought this might be an out-of-memory issue, but I retested with a freshly booted PC (128M RAM), with no other applications loaded. Same result, browser hangs loading the larger applet. After hanging, and while the browser is still resident, the system Resource Meter shows 80% or more of all system resources still free. Occasionally (but not always) the Java Console displays java.lang.illegalArgumentException: null source just before the browser hangs (the Java Console hangs too). This suggest a timing problem of some kind -- i.e., the JRE is attempting to execute a signed applet before it has fully loaded (and before the user has accepted the signing certificate). And the timing problem could very well be related to the size of the JAR file being downloaded from a web site. Both the small and larger signed applets load and run just fine under Mozilla (1.3) with JRE 1.4.0_01 installed. Both applets also load and run perfectly under Microsoft IE with EITHER JRE 1.4.1_02 or JRE 1.4.0_01. So the problem is a REGRESSION, and it is specific to JRE 1.4.1 under Mozilla (1.3). Reproducible: Always Steps to Reproduce: 1. Access my small signed applet test case at http://www.metaconnect.com/pt.htm. This works. (When the Security Warning dialog pops up, click on "Grant this session".) 2. Access my larger signed applet test case at http://www.metaconnect.com/hostpubl/demos/gsdemo.html. This hangs the browser. (The frame of the Security Warning dialog is painted, but that is as far as it gets.) Actual Results: Browser hangs. Java Console hangs too. Expected Results: The entire Security Warning dialog should be painted, the user should be able to accept the signing certificate, and after that the applet should run.
Please use the latest JRE1.4.2-beta, Thanks!
-- Verified in the latest trunk build on Win2K with JRE1.4.1_02. Browser is hanging when loading larger signed applet.
Need traction on this bug
Joshua, Would you file a bugtraq bug for this and assign to Java Plug-in team? Thanks.
This bug is a duplicate of bug 197759 which we won't have a solution in short term. The workaround is to call "getWindow" in the applet "start" method instead of "init" method.
There is no explicit call to "getWindow" in the applet "init" method (or anywhere else in the "large signed applet" that hangs). Not likely it is doing anything that makes an indirect call to "getWindow", either. These applets use no Frame or Window objects, they run entirely in the "Web page sandbox". No WindowEvent objects are handled explicitly anywhere in these applets.
Okay, there was some confusion on my part about WHICH "getWindow" you meant. The only "getWindow" documented in the Sun Java API is related to WindowEvent objects -- that is the "getWindow" I thought you meant, and (as I said) THAT "getWindow" is never called. The "getWindow" shown in your trace is associated with Netscape's JSObject API -- in other words, the LiveConnect API. Indeed, the applet DOES call "JSObject.getWindow", and that call is essential to the applet's operation. The applet makes EXTENSIVE use of LiveConnect. It might be possible, but with GREAT difficulty, to redesign the applet to do its LiveConnect initialization in the "start" method rather than the "init" method. However, I no longer have this option. This applet, and numerous ones similar to it, were developed several years ago for my former employer, from whom I retired in 1999. I no longer have access to their source code or the ability to make changes to their products. Please note that this problem is a REGRESSION -- it worked fine in all Java releases through and including 1.4.0. It fails only in JRE 1.4.1, and then only under the Mozilla browser (it works in Microsoft Internet Explorer with JRE 1.4.1).
This bug is filed in Sun's bugtraq #4856057
Status: NEW → ASSIGNED
The title of this bug should be changed to "JRE 1.4.1 hangs browser when loading LiveConnect applet", as I now realize the true nature of the problem. The applet's size, and being a signed applet, apparently had nothing to do with it -- these were "red herrings". I do apologize for not doing better "problem isolation". Indeed, before retiring I spent 30 years as a software engineer for major software vendors in Silicon valley, and I very well know how important it is for the tester to correctly identify the test conditions that are truly relevant (in this case, LiveConnect) and to NOT specify test conditions that are irrelevant ("red herrings"). Now that the true cause of the bug is known, I feel obligated to point out that the problem probably impacts practically every LiveConnect applet ever written.
Keywords: nsbeta1 → nsbeta1+
Whiteboard: Java1 → [adt2] Java1
Summary: JRE 1.4.1 hangs browser when loading larger signed applet → JRE 1.4.1 hangs browser when loading LiveConnect applet
this bug also happen on IE + JRE 1.4.2-beta-b19 so it should be JRE/JPI 's bug. unblock 1.4.
We have fixed it in JRE 1.5 release. The Sun internal bugtraq bug no is 4821301.
Assignee: joshua.xia → Xiaobin.Lu
Status: ASSIGNED → NEW
Assignee: Xiaobin.Lu → kyle.yuan
Status: ASSIGNED → NEW
Whiteboard: [adt2] Java1 → [adt2] Java1, fixed_in_tiger
not a mozilla bug. fixed in jre 1.5.
Status: NEW → RESOLVED
Last Resolved: 15 years ago
Resolution: --- → WORKSFORME
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