Error in calling Kostal Piko API: SyntaxError: Unexpected end of JSON input

[dj-mib]

Adapter is working but every day I have several entries of this error in the logfile.

I have a Piko 10 installed System Info: Versions: UI06.41 FW05.60 HW0100 PAR02.70 Artikelnummer10101181 LändereinstellungGermany NSR (30.11)

Do you have any idea why this happens?

[hombach]

Hello Michael,

adapter version? nodejs version? js controller version? or you could send your Piko's IP adress, then I could check sentry logs about this.

Define several entries .... sometimes? Or quite constant every e.g. every 250sec....

[dj-mib]

Hello Hombach,

Node.js v12.22.7 Kostal Adapter 1.4.7 JS Adapter 5.7.0

Pikos IP is 192.168.0.4 I added some logs regarding the adapter. Polltime is set to: 7.5 seconds, is it too short?

The error sounds like Piko is not responding correctly.

kostal.log

[dj-mib]

Hello again, I found something stupid. Polltime alltime statistics set to: 0.12 seconds In the Configuration Polltime was set to 120.000. It is now set to 120000. I don't know how the decimal separator was added but I think this caused a denial of service attack.

I will check if the error still occurs.

Maybe it is useful to define some minimum values to prevent this.

[hombach]

Yes, sounds as this really could be an active reaction to a "DoS-Attack"... or just IO overload :) -> will be definitely better with correct numbers, let's see if it is completely fixed.

-> You're right there should be some limits for the values.... I'll check Kostal docu, perhaps something is defined... plus: I'll define that daily stat poll has to be minimum double of standard poll and alltime double of daily.

[hombach]

Another point... you're restarting the adapter every 24h .... ? Any troubles in continous run? I never restart - expect for updates

[hombach]

Tried with 100ms poll - I get the same errors. Also tested the update frequency - looks like Piko internal update is only every 5 seconds

[dj-mib]

Another point... you're restarting the adapter every 24h .... ? Any troubles in continous run? I never restart - expect for updates

Daily restart was an attempt to get rid of this error, I think it is unnecessary. No other issues with your adapter. It works very fine! After fixing the update frequency there are no more errors in the log.

Validating the update frequency values will reduce configuration failure. Thank you very much.

[hombach]

.... use version 1.5.0 - validation of update values implemented.... ;)

[dj-mib]

Installed and tested. Invalid values will be overwritten by minimum values.