Session message handler not working on 8.1.44

Ignition
1

Possible Bug?
So I backup my gateway, and restore it on latest ignition 8.1.44. - Did I miss to configure any setting??

This was working on 8.1.37

Problem: Message Handler configured in View, not receiving Message send by Session

Button Action
image

	
	system.util.sendMessage(
		project = system.project.getProjectName(), 
		messageHandler = "sessionMsgHandler", 
		payload={}, 
		scope="S"
	)
	
	logger = system.util.getLogger("sessionBug")
	
	logger.info("sent message to sessionMsgHandler")

On Session Event Message Handler:

image
image1042×435 38 KB

On View's Message Handler:

image
image509×463 21.3 KB

Logs:

image
image532×187 6.72 KB

2

Maybe I'm stating the obvious, but your view with the event handler is open when you're calling it?

1 Like
3

We are on 3.1.44 too and session messages are working well for us. It must be a problem with your project.

4

Is there any error in your logs ?

5

Session message handler are able to received messages.
It is either Session not sending system.perspective.sendMessage or view not listening to "Session" Scope.
-- but view session scope is working, when messages are sent from view.

@diamond are you doing system.perspective.sendMessage from your session?

Nope, no error on gateway log.

6

I just tried and it works just fine.
As Michael asked: Are you trying this when the view is opened ? It needs to be opened for the message handler to be active.

7

Thanks for testing on your side.

Yes, view is open.. The button sending message, and the message handler receiving are on the same view.

I will keep on troubleshoot then..

8

Session messages sent with system.util.sendMessage() can only be caught by message handlers defined on the session. Component message handlers can only catch messages sent with system.perspective.sendMessage().

9

in perspective I call system.util.sendMessage for session's message handler.
In session message handler I call system.perspective.sendMessage for view's message Handler.

But in my case, view's message handler does not receive the message.

I don't have to time to troubleshoot, as this is urgent, so I reverted back to 8.1.37.

1 Like