Beefy Boxes and Bandwidth Generously Provided by pair Networks
We don't bite newbies here... much
 
PerlMonks  

Re: problem querying TLD nameserver with Net::DNS::Resolver

by bingos (Vicar)
on Feb 24, 2011 at 10:48 UTC ( #889953=note: print w/ replies, xml ) Need Help??


in reply to problem querying TLD nameserver with Net::DNS::Resolver

Your variable is undefined because there wasn't an answer to the specific question you asked

From the Net::DNS::Resolver documentation:

Returns a "Net::DNS::Packet" object, or "undef" if no answers were found. If you need to examine the response packet whether it contains any answers or not, use the send() method instead.

This amended code uses send() instead:

use strict; use warnings; use Net::DNS; my $domain = $ARGV[0]; #192.48.79.30 is j.gtld-servers.net my $res = Net::DNS::Resolver->new( nameservers => [qw(192.48.79.30)], recurse => 1, debug => 1, ); my $packet = $res->send("$domain", 'NS'); my @authority = $packet->authority; foreach my $rr (@authority) { print $rr->string, "\n"; }


Comment on Re: problem querying TLD nameserver with Net::DNS::Resolver
Download Code

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://889953]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others lurking in the Monastery: (10)
As of 2014-12-19 10:24 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    Is guessing a good strategy for surviving in the IT business?





    Results (77 votes), past polls