Can you please specify step by step what you do (and with which of my nodes: Discovery node, Event node, ...) to get that error. I need to be able to reproduce it, in order to fix it.
- Have you also enabled you events in the web interface of your camera as I explained? Because if you don't tell your camera which events it needs to stream, then it won't stream any events.
- Which info is being displayed in the Event node status (i.e. the text that appears directly below the event node rectangle)?
- Do you see errors in the Debug sidepanel or in the Node-RED log?
Seems that there was 3 days ago a new version released of the onvif library that I use. They now allow to catch exceptions caused by responses from cameras that cannot be parsed. Perhaps that might be the case here. Don't know... I have asked them here for more information. But meanwhile I have again pushed a fix to github to show such errors in the Node-RED Debug sidebar. So if you can again install my node and then see in the Debug sidebar - after you have triggered the Discovery node - if we get extra information.
Yes I did.
I used the following flow
[{"id":"a19788d1.afaf98","type":"onvif-discovery","z":"50df184.124f2e8","name":"","timeout":5,"separate":true,"x":500,"y":480,"wires":[["ed0cc23.44c014"]]},{"id":"be6e8353.f7716","type":"inject","z":"50df184.124f2e8","name":"Start searching","topic":"","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":280,"y":480,"wires":[["a19788d1.afaf98"]]},{"id":"ed0cc23.44c014","type":"debug","z":"50df184.124f2e8","name":"Onvif devices","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","x":700,"y":480,"wires":[]}]
Since we did not find a device.
When I use this flow and enter the IP address of the camera and user and password I get the following error.
TypeError: Cannot read property 'device' of undefined
[{"id":"748f5110.c57f7","type":"inject","z":"b3db206e.b7139","name":"Start listening","topic":"","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":150,"y":1020,"wires":[["12ad9448.0899fc"]]},{"id":"12ad9448.0899fc","type":"change","z":"b3db206e.b7139","name":"","rules":[{"t":"set","p":"action","pt":"msg","to":"start","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":460,"y":1020,"wires":[["a8f7752e.2998f8"]]},{"id":"801f0dd.3e0b3f","type":"inject","z":"b3db206e.b7139","name":"Stop listening","topic":"","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":150,"y":1060,"wires":[["b7dc815b.29f4a"]]},{"id":"b7dc815b.29f4a","type":"change","z":"b3db206e.b7139","name":"","rules":[{"t":"set","p":"action","pt":"msg","to":"stop","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":460,"y":1060,"wires":[["a8f7752e.2998f8"]]},{"id":"2774034b.91102c","type":"inject","z":"b3db206e.b7139","name":"Get event properties","topic":"","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":170,"y":1140,"wires":[["e59923ee.4db8d"]]},{"id":"e59923ee.4db8d","type":"change","z":"b3db206e.b7139","name":"","rules":[{"t":"set","p":"action","pt":"msg","to":"getEventProperties","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":460,"y":1140,"wires":[["a8f7752e.2998f8"]]},{"id":"120e35a2.b4da5a","type":"inject","z":"b3db206e.b7139","name":"Get event service capabilities","topic":"","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":200,"y":1100,"wires":[["2c1017b7.e2e448"]]},{"id":"2c1017b7.e2e448","type":"change","z":"b3db206e.b7139","name":"","rules":[{"t":"set","p":"action","pt":"msg","to":"getEventServiceCapabilities","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":460,"y":1100,"wires":[["a8f7752e.2998f8"]]},{"id":"a8f7752e.2998f8","type":"onvif-events","z":"b3db206e.b7139","name":"","deviceConfig":"c6b46a46.8067f8","action":"","x":670,"y":1020,"wires":[["61d49191.38fb9"]]},{"id":"61d49191.38fb9","type":"switch","z":"b3db206e.b7139","name":"Topic ProcessorUsage","property":"topic","propertyType":"msg","rules":[{"t":"eq","v":"Monitoring/ProcessorUsage","vt":"str"}],"checkall":"true","repair":false,"outputs":1,"x":880,"y":1020,"wires":[["9d4463a2.1d43d"]]},{"id":"9d4463a2.1d43d","type":"change","z":"b3db206e.b7139","name":"Get value","rules":[{"t":"set","p":"payload","pt":"msg","to":"data.value","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":1080,"y":1020,"wires":[["97abe077.30ed"]]},{"id":"97abe077.30ed","type":"ui_chart","z":"b3db206e.b7139","name":"Camera CPU %","group":"22787703.a0e968","order":2,"width":0,"height":0,"label":"Camera CPU %","chartType":"line","legend":"false","xformat":"HH:mm:ss","interpolate":"linear","nodata":"","dot":false,"ymin":"0","ymax":"110","removeOlder":1,"removeOlderPoints":"50","removeOlderUnit":"3600","cutout":0,"useOneColor":false,"colors":["#1f77b4","#aec7e8","#ff7f0e","#2ca02c","#98df8a","#d62728","#ff9896","#9467bd","#c5b0d5"],"useOldStyle":false,"outputs":1,"x":1260,"y":1020,"wires":[[]]},{"id":"c6b46a46.8067f8","type":"onvif-config","z":"","xaddress":"192.168.1.174","port":"80","name":"Hikvision"},{"id":"22787703.a0e968","type":"ui_group","z":"","name":"Web push notifications","tab":"80f0e178.bbf4a","disp":true,"width":"6","collapse":false},{"id":"80f0e178.bbf4a","type":"ui_tab","z":"","name":"Home","icon":"dashboard","order":1,"disabled":false,"hidden":false}]
@madmax,
Thanks for the feedback. Will have a look later, because it is the lady her birthday today. Which means limited Node-RED time today 
As you can see here I am also trying to find bugs in the discovery process meanwhile...
When I look at your corresponding screenshot, the Event node has status "disconnected":
When the node is disconnected, that is normally due to wrong ip/port/username/password. But of course there can also be a bug in the code. Because the whole (dis)connect recently has been rewritten for this issue, but it is not tested yet by the people that can reproduce the issue.
But I can imagine that a disconnected node results in errors like "TypeError: Cannot read property 'device' of undefined". Of course the message should become user friendly...
Does this error appear when you inject a message via the "start listening" button???
Ok thanks for confirming that!
I don't see any node status:
Is there also no status visible when you have injected an input message, to start the discovery?
I found also a bug in my discovery node, which I need to solve somehow (see discussion).
Seems other people with such a camera had the same issue with the library that I'm using ;-(
The IP address and the access data were correct.
The error comes when I click on start listening.
I only get the status that no device was found.
Which camera do you use?
I would like one that automatically recognizes people, cars and everything. It has to go via wifi.
Hmm I should have the possibility to debug this. Is there a possibility that you setup port forwarding to that cam on your router, and send me a private message with ip adress/username/password? You can cover it, because I don't need to see anything...
Most of my cams are prety old Panasonic cams.
I have also one Hikvision DS-2CD2442FWD-IW to experiment with Onvif...
You can better start a new discussion (category "hardware") to ask people which cam they advise...
I just sent you a message.
@madmax,
When I use the flow you had shared above, I also get "disconnected" when testing your camera.
Remark: I don't get that TypeError when I start listening when not connected...
However I see this in your camera's settings:
When I change the port number in the config screen from port 80 to 8000 then I get "connected":
Remark: when I add a Debug node to the output of the Event node, I don't see any events after I started listening. Not sure which events you have activated and if those occur at this moment...
Can you change the Onvif port number and test your events locally?
Hello!
I forwarded that with the Proto, it was always at 8000.
I have set everything so with me he does not connect.
@madmax,
Under the cover, I use the onvif library.
I see now that on my system version 0.6.3 of that library was installed, while their latest version is 0.6.5 (which has been published about 7 days ago).
I have now installed version 0.6.5 to make sure I have the same setup as you. But I see that your camera is not available anymore. Could you please make it public again? I will try to find some time tomorrow evening to test it again with the updated library.
That is the last thing I can try to analyse your problem.
Hello!
OK I just released it. You can access it again.
Hi @madmax,
I can confirm that with the latest version, I indeed have exactly the same issues as you have reported.
Now I need to start debugging... But I have only few spare time in the evenings, so you might have to leave your cam public available for a couple of days. Hopefully that is not a problem ...
OK I do.
Many thanks for your help.
You are welcome.
The TypeError seemed to be because the Onvif library - for some reason not clear to me yet - does not fetch the capabilities (e.g. events, ptz, ...) from your camera. So it doesn't know whether it supports events.
In my (local) version I have now fixed this, to show a new status in this case:
But that doesn't help you very much.
I need to figure out why the hell I don't get your cam's capabilities 
