set user variable fails when -webroot is used

[janpascal]

Hi all,

I'm trying to set a user variable from a dzVents script (so that another script can trigger on it). I think it is failing because I start domoticz with the -webroot option:

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-daemon -www 8081 -sslwww 0 -log /var/log/domoticz/log.txt -webroot domoticz -verbose 2 -pidfile $PIDFILE -userdata /var/lib/domoticz/ -dbase /var/lib/domoticz/domoticz.db -loglevel 3

Then, when from a dzVents script I try to set a user variable:

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domoticz.variables('AlarmDetected').set(1)

This result in an error message in the domoticz log:

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Error opening url: http://127.0.0.1:8081/json.htm?type=command&param=updateuservariable&vname=AlarmDetected&vtype=0&vvalue=1&idx=1

... which is indeed incorrect because the webroot is missing in the url. It should start with http://127.0.0.1:8081/domoticz/json.html?...

It seems to me two things should be done to fix this. First, in main/EventSystem.cpp, in EventSystem::EvaluateLua(), the Lua global variable 'globalvariables' is set, including the domoticz_listening_port. Here domoticz_webroot should be added with code like this:

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                        lua_pushstring(lua_state, "domoticz_webroot");
                        lua_pushstring(lua_state, <SOMETHING>);
                        lua_rawset(lua_state, -3);

I'm not sure where the webroot is stored in domoticz.

Second, in dzVents/runtime/EventHelpers.lua the line

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['Domoticz url'] = 'http://127.0.0.1:' .. (tostring(globalvariables['domoticz_listening_port']) or "8080")
 

should be something like

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['Domoticz url'] = 'http://127.0.0.1:' .. (tostring(globalvariables['domoticz_listening_port']) or "8080") .. '/' ..(tostring(globalvariables['domoticz_webroot']) or ''')
 

(except that this add a superfluous / when the webroot is empty).

Am I thinking in the right direction? BTW, running Domoticz 3.8153 with the included dzVents 2.2.0.
Thanks for any help,

Jan-Pascal

[dannybloe]

Ah, interesting. You learn something new every day. I'll add it to the todo list. In the mean time you can upgrade to 2.3 as that no longer uses http to update variables.

[dannybloe]

Ok, dzVents 2.4 will have support for this.
I tested this on my machine and I noticed that if you started domoticz with a webroot that you cannot save the settings in the GUI. Will give you bad request.

[mischa]

How can I update to version 2.3 without updating Domoticz?
running into the same issue

Thanks,

Mischa

[dannybloe]

You will have to wait for 2.4 to be merged in beta. DzVents is tightly locked to a Domoticz build.

[mischa]

Is there a workaround for updating the variable?

I'm running stable on a Synology NAS, not sure if it is possible to update from stable to beta.
and probably going to take a while before jumbotroll makes another beta.

Mischa