Error Connecting To Designer From Debugger

Module Development
1

I'm experiencing an issue with remote debugging in Ignition Designer using IntelliJ IDEA. The debugger initially connects on port 8001 but disconnects almost immediately, typically within a second. The debug connection only remains open when the JVM argument includes 'suspend=y', but this causes the application to halt until a debugger connects. With 'suspend=n', the port appears to close after the initial loading phase.

Im getting these outputs when running netstat -ano | findstr :8001:

I'm using the following JVM argument for remote debugging:
TCP 127.0.0.1:8001 127.0.0.1:53511 TIME_WAIT 0
TCP 0.0.0.0:8001 0.0.0.0:0 LISTENING 31272
TCP [::]:8001 [::]:0 LISTENING 31272
TCP 0.0.0.0:8001 0.0.0.0:0 LISTENING 31272
TCP [::]:8001 [::]:0 LISTENING 31272
TCP 0.0.0.0:8001 0.0.0.0:0 LISTENING 31272
TCP [::]:8001 [::]:0 LISTENING 31272
TCP 127.0.0.1:8001 127.0.0.1:53623 ESTABLISHED 31272
TCP 127.0.0.1:53623 127.0.0.1:8001 ESTABLISHED 5444
TCP 127.0.0.1:8001 127.0.0.1:53623 TIME_WAIT 0
TCP 127.0.0.1:8001 127.0.0.1:53623 TIME_WAIT 0

These are the jvm arguments:
-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=:8001
--Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=:8001

The debugger log shows:

  1. Successful initial connection:
    FINE - #c.i.d.e.DebugProcessImpl - *VM attached

  2. Debugger enters RUNNING state:
    FINE - #c.i.d.i.DebuggerSession - DebuggerSession state = RUNNING, event = ATTACHED

  3. Almost immediately after, the debugger detaches and disposes of the session:
    FINE - #c.i.d.i.DebuggerSession - DebuggerSession state = STOPPED, event = DETACHED
    FINE - #c.i.d.i.DebuggerSession - DebuggerSession state = DISPOSED, event = DISPOSE

Any insights or suggestions would be greatly appreciated. Thank you in advance for your help!

2

What does your IntelliJ launch config and Designer Launcher config look like? Do you maybe have a firewall or AV software interfering?

I just gave this a quick try and had no issue getting the remote debugger attached.

Using

-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=*:5005
3

weirdly enough after many hours of trying I simply reinstalled my designer and it seems to be working.

Thanks for the help anyway!