Domoticz server denies access by some APIs Topic is solved

[roelvdh]

I have a Raspi running Domoticz. Everything runs fine, except 2 APIs that used to run OK but suddenly stopped communicating. I am not aware of any changes to my system around the time this started. The problematic services are Tado and Weatherchannel:

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2024-01-30 20:49:35.138 Error: Tado systeem: Failed to retrieve API environment from https://my.tado.com/webapp/env.js
2024-01-30 20:49:42.474 Error: Weerkanaal: Error getting http data!

This may not be a Domoticz problem but I am out of options so maybe someone has a quick fix?

Edit:
And I cannot reach the Domoticz site either

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pi@EnergyPi:~/domoticz $ sudo ./updaterelease
Stopping Domoticz...
Making backup of current installation...
Output file: backups/domoticz_backup_20240130_210843.tar.gz
Backup finished...
Downloading latest release version...
Problem downloading new Domoticz version!!. Restarting current version...
pi@EnergyPi:~/domoticz $/code]

[lwolf]

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2024-01-30 20:49:35.138 Error: Tado systeem: Failed to retrieve API environment from https://my.tado.com/webapp/env.js
2024-01-30 20:49:42.474 Error: Weerkanaal: Error getting http data!

This may not be a Domoticz problem but I am out of options so maybe someone has a quick fix?

Try to ssh into the Raspberry and exec the commands below:

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ping 8.8.8.8

If this shows that 8.8.8.8 is reachable you have a working ip gateway.

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ping www.google.com

If the first command work, but this one said www.google.com is not reachable: your network DNS settings failed, and this is not a Domoticz problem, but system-wide.

[willemd]

First thing to do is a router reset. Usually when my domoticz system has trouble accessing other internal systems, it is a router issue.

[roelvdh]

Sure, that works normally. In this case I think something went wrong after installing Domoticz 2024.2. The internal web server works fine for ports 8080 and 443 (internal network) but refuses external connections via port 80, and even internally from my Windows machine on the same network:

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C:\Users\Gebruiker>telnet EnergyPi.local 80
Er wordt verbinding gemaakt met EnergyPi.local...Kan geen verbinding met de host maken, op poort 80: Het maken van de verbinding is mislukt
:\Users\Gebruiker>

I will completely uninstall Domoticz and re-install with the Stable version issued yesterday.

[waltervl]

Because there is nothing on port 80 from Domoticz. So why do you want to use port 80? A reinstall will not fix this.....

[roelvdh]

Indeed, https://my.tado.com/webapp/env.js will use port 443, but WeatherChannel probably uses port 80 as per the error message. I am still confused why these services suddenly stopped working without any changes from my side besides updating Domoticz.

[waltervl]

The internal Domoticz webserver has nothing to do with Domoticz server not able to contact your tado website or your weather channel.
Can you telnet from your Domoticz server to weatherchannel or tado? If not something is wrong in your network settings , could also be on the Domoticz server itself but also on a firewall or router.

[roelvdh]

Solved. I decided the problem must be in the RPi, so I rebuilt the RPi from scratch and put back my existing Domoticz files. That worked. I still assume something must have happened to the RPi when upgrading to Domoticz 2024.2, but I leave that for now. You were right about the internal web server: it serves pages but does not communicate with APIs. Thanks for helping me out.

[roelvdh]

I called it solved and it was, but now I made the same error again and now I understand what happened. Problem was I had changed the hostname of the RPi. That's the way I work: start an upgrade on another RPi and when it works OK, change back the hostname. But that makes existing calls to external APIs invalid, so it seems. Probably a cache problem somewhere. Now really solved!