got Error: getaddrinfo ENOTFOUND from http request node

[Pierre-Andre Line]

Hi,

I send a http request to my server (cloud) and sometimes (about one for ten requests), I get “Error: getaddrinfo ENOTFOUND”. When I replace in the URL the domain name by the server’s IP, it works perfect.
I read in nodejs docs/forums that it could be a IPV4 / IPV6 issue in DNS resolution, and then I should set http request’s option ‘family’ to 4, to be sure that it will use IPV4.
I added this option value in a function before the http request node :

var newMsg = {
    payload: msg,
    family: 4,
    headers: {
        "Content-type" : "application/json"
    }
};
return newMsg;

But same result (ENOTFOUND errors sometimes).

I’ve checked that ipV6 is not enabled (no inet6 IP displayed with ifconfig and no ipv6 setup panel).

Is there a better way to specify the family option of the http request node ?
Is there another explication ?
Thanks.

[Peter Ferland]

Are you using ethernet or a cellular connection for WAN? Are you specifying a DNS server in the configuration for your WAN in the web interface or are you relying on DHCP?

[Pierre-Andre Line]

WAN connexion by ethernet (eth0) mode DHCP client. Dns server’s IP comes from DHCP server, and seems to be correct :

admin@mtcdt:~# cat /etc/resolv.conf
domain home
nameserver 10.10.10.1

10.10.10.1 is the internet gateway.

[Author]

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