Question regarding hostname about node-tradfri-client

[AlCalzone]

Hmm I guess I could write this in the readme. The hostname is gw- followed by the MAC address in lowercase without any separators. The MAC address is printed on the label under the gateway.

[oscarnyl]

That is how I assumed it was: However, I was unable to connect when only entering the hostname (ERR_NAME_NOT_RESOLVED).

My case might be slightly special though as I'm running the development inside a Docker container which in turn is ran on a virtual machine 😅

[AlCalzone]

Hmm, can you open the console on your machine and run node, then enter the following code (edit the hostname)

var dns = require("dns");
dns.resolve("gw-xyzabc", function(err, addr) {
	if (err) {
		console.log("ERROR: " + err);
	} else {
		console.log(JSON.stringify(addr));
	}
});

and post the output here? I'd need some more info as I haven't heard about that error in a nodejs context.

[oscarnyl]

I think I've figured out why it would not resolve: I'm running a pihole in my network as my DNS server, which apparently messes with how this is supposed to work. When the pihole is inactive the adress resolves correctly, output of command is:

dns.resolve('gw-dcefcabcf84d', (err, addr) => err ? console.log(err) : console.log(JSON.stringify(addr)))
// => ["192.168.1.55"]

[oscarnyl]

I wonder if I can get it to work automatically while still having the pihole present on the network.

[oscarnyl]

For reference this is the result when running the same code when the pihole is active:

dns.resolve('gw-dcefcabcf84d', (err, addr) => err ? console.log(err) : console.log(JSON.stringify(addr)))
// => { Error: queryA ENOTFOUND gw-dcefcabcf84d
    at errnoException (dns.js:55:10)
    at QueryReqWrap.onresolve [as oncomplete] (dns.js:243:19)
  code: 'ENOTFOUND',
  errno: 'ENOTFOUND',
  syscall: 'queryA',
  hostname: 'gw-dcefcabcf84d' }

[AlCalzone]

Maybe enabling the pi-hole's DHCP helps with that:
https://www.reddit.com/r/pihole/comments/5xepzl/local_hostname_resolution/
Or you can add the gateway to /etc/hosts on the pihole:
https://discourse.pi-hole.net/t/trouble-using-pihole-to-resolve-local-hostnames/2163/2

Closing this as it doesn't seem to be a library issue.

[oscarnyl]

Thank you for the suggestion, I will try that out. 👍