incompatible with Traccar past version 4.10

[Haskar]

Traccar can send multiple formated responses on the position requests. I do not really understand the mechanics behind this but I read that we need to add "accept-headers" so I changed the following lines in node_helper.js:
changed
'headers': { 'Cookie': response.headers['set-cookie'][0] }
to
'headers': {'Accept': 'application/json', 'Cookie': response.headers['set-cookie'][0] }

It's in the SETUP part of the socketNotificationReceived-function.
Took me a couple of weeks to figure this out ... needless to say, I am a crappy programmer and therefore I'd rather write down my fixes here than commiting the files.

[Haskar]

unfortunately, that didn't fix the problem either ... it just happens less often.

[Haskar]

well I guess the fix was much easier than that.
make the traccar websocket timeout longer - as a minimum I recommend to set it to the time of your fastest updating device + something.

I set mine to 15 minutes by adding this line to the traccar.xml:
<entry key='web.timeout'>900000</entry>

I also added
self.socket.on('close', function(){ self.sendSocketNotification("Error","Error"); });
to the SETUP part of the socketNotificationReceived-function.

I should add some code to close those websocket connections on a restart of the magicmirror-service. I had to restart because I got every update a zillion times :)