Hi everyone!
The dns.resolve tries to send request to only the first nameserver
in /etc/resolv.conf, and if the first nameserver fails to resolve the name,
dns.resolve just returns and doesn't try to send request to the second
nameserver. Is this work-as-design?
Here is an example: the /etc/resolv.conf is like below in Linux:
75.2.4.5
75.4.7.6
Run below codes:
*dns.resolve*('demo1.sample.com','A',function(err, addresses) {
console.log(err);
console.log(addresses);
});
The 'demo1.sample.com' is defined in the second nameserver (75.4.7.6), so
the above codes always failed, because the dns.resolve doesn't try to call
the second nameserver.
I found nodejs has flag to control this:
https://github.com/nodejs/node/blob/master/deps/cares/src/ares_init.c#L255
seems like the default behaviour is only call the first nameserver, is
there any way to make dns.resolve to call all nameservers in
/etc/resolv.conf until succeed?
Thanks a lot.
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