Checking in LUA that WAN is alive

[knuth 29]

My Fibaro HC2 is connected to a 4G router for external (WAN) communication. The mobile network coverage is variable, and the external signal some times fails. In a LUA scene I want to check that my external WAN connection is not down. I assume that the LAN and its router are working normally, so I need to check against an external name server (DNS) or something. What would be the easiest way to implement this in LUA? I have looked at the request(url, options, succes, error) function, thinking that this maybe can return an error function which I can use as an indicator. But I am not sure how to set it up. Am I on the right track? Any ready-made solutions for this situation out there? Or any good ideas? 

[10der 832]

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online field

 

IMHO

[knuth 29]

And how, exactly, do you use this to detect whether the router has lost its external communication? The most relevant parameter here seems to be "Server status" (described as "Server status in seconds"). But is this the Fibaro server (i.e. a WAN connection) or the local "server"/router (i.e. the LAN connectivity)? 

 

Besides, your reference is to an API command. In my case, I am physically remote from the HC2 most of the time, making direct API commands inaccessible. I need to implement detection of lost WAN through an automated LUA scene (with appropriate actions, like restarting the router, taken). How can this detection be done in LUA? 

[10der 832]

IMHO online field

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it's online status with connection to FIBARO GW. so if your 4g router is offline - HC2 lose connection to FIBARO cloud... 

@knuth can understand me - implementation ICMP in LUA by fibaro it's pain. 

and btw you can open via VD socket connection to 8.8.8.8 for example - abd test this connection as sign - OK or !OK

[knuth 29]

Thanks, @10der , but I am out of my depth here, making it difficult for me to understand what you are suggesting. ICMP means nothing to me, and I am struggling with the last pages of the Fibaro LUA documentation, which I think are relevant for this ("TCPListener" etc.).

I do understand from you that the "online" status indicates whether connection to the Fibaro cloud has been lost. Great! That is what I need! I do not see, however, how I can retrieve this variable in a LUA scene. Can I? If so, how?

[10der 832]

1 minute ago, knuth said:

I can retrieve this variable in a LUA scene. Can I? If so, how?

 

 

 

 

 

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[szmyk 52]

You can use also this VD:

 

 

[10der 832]

By the way @szmyk +1

[szmyk 52]

@10der all credits and glory go to @AutoFrank