Java 1.7.0_u25 Applet Debugging with eclipse

Question

I'm trying to debug an applet for 2 days now and I've gone over every solution posted on this site, but i can't find my mistake.

At my Java Runtime Environment Settings i set up all my JREs with the parameters:

-Djava.compiler=NONE -Xnoagent -Xdebug -Xrunjdwp:transport=dt_socket,address=8000,server=y,suspend=n

When I run the Applet in any browser, and confirm the new security dialog from Java, the Applet starts - all fine. However, when I run my Debugger in Eclipse with the settings:

• Connection Type: Standard (Socket Attach)
• Host: localhost
• Port: 8000

I get this error:

'Launching Applet' has encountered a problem. Failed to connect to remote VM.

In the Details Pane:

Failed to connect to remote VM Network is unreachable: connect

The output of an Ping to localhost is:

ping localhost

Pinging myhostename.mydomain [::1] with 32 bytes of data:
Reply from ::1: time<1ms
Reply from ::1: time<1ms
Reply from ::1: time<1ms
Reply from ::1: time<1ms

What is my awfully ridiculous mistake?

Viscus

I have the same problem since java 1.7u21, the last version working is java 1.7u17. I have no solution to your problem however except installing old JVM :). If anyone now how to fix it in newer version please react ! – Marthmartha

The old JVM is no option for me, because i need to fix a bug witch only appears on u21 Applets.. – Viscus

Answer 1

Sun already fixed that, and the fix will be included in Java 1.7.0 update 40 (released in late August)

Here is the bug-report: https://bugs.java.com/bugdatabase/view_bug?bug_id=8016154

There is a early access for update 40: http://jdk7.java.net/download.html

I have not yet tried this but maybe it helps someone out there.

EDIT: Update 40 is now released, I tried it again but it still won't work... I will continue trying, maybe i did something wrong.

Viscus

Answer 2

It seems that 1.7 will not support Applet Debugging... the resolution of the bug is added in 1.8

http://bugs.java.com/view_bug.do?bug_id=8016005

Good thing I found your question/answer, otherwise I might've banged my head the whole day trying to figure out the problem.

Czardom