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Posted to notifications@netbeans.apache.org by GitBox <gi...@apache.org> on 2022/08/28 14:59:34 UTC
[GitHub] [netbeans] blakemcbride opened a new issue, #4558: Can't attach to a debug process on Java 17
blakemcbride opened a new issue, #4558:
URL: https://github.com/apache/netbeans/issues/4558
### Apache NetBeans version
Apache NetBeans 15 release candidate
### What happened
I have been debugging my Java app by attaching to a process under Java 8 with no problem. I upgraded my app and system to Java 17. I can no longer attach to the process. NetBeans says, "Connection refused." Interestingly, IntelliJ can attach to the process, so I know it is something to do with NetBeans and Java 17.
When I try to attach to the process with NetBeans, I select:
Debugger: Java Debugger (JPDA)
Connector: SocketAttach (Attaches by socket to other VMs)
Transport: dt_socket
Host: i9-tower
Port: 9090
Timeout [ms]: [blank]
These are the same parameters I used with Java 8 that worked fine.
### How to reproduce
_No response_
### Did this work correctly in an earlier version?
No / Don't know
### Operating System
Fedora Linux
### JDK
17
### Apache NetBeans packaging
Apache NetBeans provided installer
### Anything else
_No response_
### Are you willing to submit a pull request?
No
### Code of Conduct
Yes
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[GitHub] [netbeans] lkishalmi commented on issue #4558: Can't attach to a debug process on Java 17
Posted by GitBox <gi...@apache.org>.
lkishalmi commented on issue #4558:
URL: https://github.com/apache/netbeans/issues/4558#issuecomment-1231908986
Fedora. SELinux?
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[GitHub] [netbeans] blakemcbride commented on issue #4558: Can't attach to a debug process on Java 17
Posted by GitBox <gi...@apache.org>.
blakemcbride commented on issue #4558:
URL: https://github.com/apache/netbeans/issues/4558#issuecomment-1231943734
IntelliJ can attach to port 9090 and debug.
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[GitHub] [netbeans] blakemcbride commented on issue #4558: Can't attach to a debug process on Java 17
Posted by GitBox <gi...@apache.org>.
blakemcbride commented on issue #4558:
URL: https://github.com/apache/netbeans/issues/4558#issuecomment-1231946210
Also, I am starting the server and trying to attach from the same user.
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[GitHub] [netbeans] blakemcbride commented on issue #4558: Can't attach to a debug process on Java 17
Posted by GitBox <gi...@apache.org>.
blakemcbride commented on issue #4558:
URL: https://github.com/apache/netbeans/issues/4558#issuecomment-1232781768
Perhaps NetBeans should default to localhost rather than the hostname. (I've never seen a Linux install that auto-added the hostname to the hosts file.)
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[GitHub] [netbeans] lkishalmi commented on issue #4558: Can't attach to a debug process on Java 17
Posted by GitBox <gi...@apache.org>.
lkishalmi commented on issue #4558:
URL: https://github.com/apache/netbeans/issues/4558#issuecomment-1231155537
Works like a charm. Everything is on Java 17.0.4 provided by Ubuntu packages.
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[GitHub] [netbeans] blakemcbride commented on issue #4558: Can't attach to a debug process on Java 17
Posted by GitBox <gi...@apache.org>.
blakemcbride commented on issue #4558:
URL: https://github.com/apache/netbeans/issues/4558#issuecomment-1230894687
Well, under Java 17, I get "Connection refused," but IntelliJ can attach. If I switch to Java 8, NetBeans can connect. The app I am working on is a webap hosted on tomcat with about 10,000 classes. I will try to create a minimum example as soon as I get a chance.
Thanks!
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[GitHub] [netbeans] blakemcbride commented on issue #4558: Can't attach to a debug process on Java 17
Posted by GitBox <gi...@apache.org>.
blakemcbride commented on issue #4558:
URL: https://github.com/apache/netbeans/issues/4558#issuecomment-1231940007
I turned off SELunix with:
systemctl disable firewalld.service
systemctl stop firewalld.service
And:
ufw disable
I still can't connect. However, the IDE log is giving me:
INFO [org.netbeans.ui.metrics.debugger]: Debugger connect using connector com.sun.jdi.SocketAttach with arguments: timeout=, hostname=i9-tower, port=9090
INFO [org.netbeans.ui.metrics.debugger]: Connecting via connect type Java Debugger (JPDA)
INFO [org.netbeans.ui.metrics.debugger]: Debugger session i9-tower:9090 started at i9-tower for Java
INFO [org.netbeans.api.debugger.jpda.AttachingDICookie]: Attaching Connector = com.sun.jdi.SocketAttach (defaults: timeout=, hostname=i9-tower, port=), arguments = {timeout=timeout=, hostname=hostname=i9-tower, port=port=9090}
java.net.ConnectException: Connection refused (Connection refused)
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:607)
at com.sun.tools.jdi.SocketTransportService.attach(SocketTransportService.java:222)
at com.sun.tools.jdi.GenericAttachingConnector.attach(GenericAttachingConnector.java:116)
at com.sun.tools.jdi.SocketAttachingConnector.attach(SocketAttachingConnector.java:90)
[catch] at org.netbeans.api.debugger.jpda.AttachingDICookie.getVirtualMachine(AttachingDICookie.java:206)
at org.netbeans.modules.debugger.jpda.actions.StartActionProvider.doStartDebugger(StartActionProvider.java:163)
at org.netbeans.modules.debugger.jpda.actions.StartActionProvider.access$200(StartActionProvider.java:55)
at org.netbeans.modules.debugger.jpda.actions.StartActionProvider$1.run(StartActionProvider.java:140)
at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:45)
at org.openide.util.lookup.Lookups.executeWith(Lookups.java:278)
at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)
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[GitHub] [netbeans] blakemcbride commented on issue #4558: Can't attach to a debug process on Java 17
Posted by GitBox <gi...@apache.org>.
blakemcbride commented on issue #4558:
URL: https://github.com/apache/netbeans/issues/4558#issuecomment-1230906253
Okay. I've got a simple example. Type the following (on Linux)
$ git clone https://github.com/blakemcbride/Kiss.git
$ cd Kiss
$ ./bld develop
Now, from NetBeans click Debug / Attach Debugger...
Debugger: Java Debugger (JPDA)
Connector: SocketAttach
Transport: dt_docket
Host: [your host]
Port: 9000
If I build under Java 8 the debugger attaches. If I build the above app under Java 17 NetBeans gives me "Connection refused".
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[GitHub] [netbeans] blakemcbride commented on issue #4558: Can't attach to a debug process on Java 17
Posted by GitBox <gi...@apache.org>.
blakemcbride commented on issue #4558:
URL: https://github.com/apache/netbeans/issues/4558#issuecomment-1230374384
I am sure NetBeans can debug Java 17 programs. That is not what I am talking about. I am talking about the ability to attach to a running program for debug purposes. This is done by clicking on Debug / Attach Debugger...
When doing this with a Java 17 program, NetBeans responds with "Connection refused."
Again, IntelliJ can attach to the same process so I know the problem is with NetBeans.
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[GitHub] [netbeans] blakemcbride commented on issue #4558: Can't attach to a debug process on Java 17
Posted by GitBox <gi...@apache.org>.
blakemcbride commented on issue #4558:
URL: https://github.com/apache/netbeans/issues/4558#issuecomment-1231889081
Okay. That's good news. I turned off my firewall, and that didn't help. I also looked at the NetBeans log. Nothing. How can I figure out why it isn't working on my machine?
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[GitHub] [netbeans] lkishalmi commented on issue #4558: Can't attach to a debug process on Java 17
Posted by GitBox <gi...@apache.org>.
lkishalmi commented on issue #4558:
URL: https://github.com/apache/netbeans/issues/4558#issuecomment-1229748200
Well working with Java 17 on Ubuntu for over 6 months by now I do not see such issues. (I switched from running NetBeans from Java 11 to 17 early this year.)
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[GitHub] [netbeans] blakemcbride commented on issue #4558: Can't attach to a debug process on Java 17
Posted by GitBox <gi...@apache.org>.
blakemcbride commented on issue #4558:
URL: https://github.com/apache/netbeans/issues/4558#issuecomment-1232653940
FYI:
[root@i9-tower ~]# cd /etc
[root@i9-tower etc]# cat hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
137.184.221.59 wtg
157.245.254.75 tse
[root@i9-tower etc]# hostname
i9-tower
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[GitHub] [netbeans] blakemcbride commented on issue #4558: Can't attach to a debug process on Java 17
Posted by GitBox <gi...@apache.org>.
blakemcbride commented on issue #4558:
URL: https://github.com/apache/netbeans/issues/4558#issuecomment-1232650485
That worked! Thank you very much!!
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[GitHub] [netbeans] blakemcbride commented on issue #4558: Can't attach to a debug process on Java 17
Posted by GitBox <gi...@apache.org>.
blakemcbride commented on issue #4558:
URL: https://github.com/apache/netbeans/issues/4558#issuecomment-1229486547
I reconfigured my machine back to Java 8. I can again attach to the debug process with the exact same setup. The problem is clearly associated with Java 17.
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[GitHub] [netbeans] lkishalmi commented on issue #4558: Can't attach to a debug process on Java 17
Posted by GitBox <gi...@apache.org>.
lkishalmi commented on issue #4558:
URL: https://github.com/apache/netbeans/issues/4558#issuecomment-1232500214
Could you try localhost in the hosname field instead of i9-tower?
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[GitHub] [netbeans] lkishalmi closed issue #4558: Can't attach to a debug process on Java 17
Posted by GitBox <gi...@apache.org>.
lkishalmi closed issue #4558: Can't attach to a debug process on Java 17
URL: https://github.com/apache/netbeans/issues/4558
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[GitHub] [netbeans] lkishalmi commented on issue #4558: Can't attach to a debug process on Java 17
Posted by GitBox <gi...@apache.org>.
lkishalmi commented on issue #4558:
URL: https://github.com/apache/netbeans/issues/4558#issuecomment-1230657296
Just tested on my computer (it has Java 17 only). Attaching debugger works.
My testcase was:
1. Create a new Gradle Application Project
2. Open the App.java, place a valid breakpoint
3. Select the app project
4. Tools > Open in Terminal
5. execute: ```../gradlew run --debug-jvm```
6. Attach the debugger on port: 5005
7. Check the breakpoint caught.
```
Product Version: Apache NetBeans IDE 15
Java: 17.0.4; OpenJDK 64-Bit Server VM 17.0.4+8-Ubuntu-122.04
Runtime: OpenJDK Runtime Environment 17.0.4+8-Ubuntu-122.04
System: Linux version 5.15.0-46-generic running on amd64; UTF-8; en_US (nb)
User directory: /home/lkishalmi/snap/netbeans/69
Cache directory: /home/lkishalmi/snap/netbeans/common/69
```
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[GitHub] [netbeans] blakemcbride commented on issue #4558: Can't attach to a debug process on Java 17
Posted by GitBox <gi...@apache.org>.
blakemcbride commented on issue #4558:
URL: https://github.com/apache/netbeans/issues/4558#issuecomment-1232362876
BTW, of all the things I've reported, this one is the most important to me. Until I get it working, I can't switch to Java 17.
Thanks for all of your help!
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