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Re^2: Net::Dns::packet creation.

by cord-bin (Friar)
on May 26, 2014 at 14:18 UTC ( #1087439=note: print w/replies, xml ) Need Help??

in reply to Re: Net::Dns::packet creation.
in thread Net::Dns::packet creation.

shadrack gave a good answer by using gethostbyaddr with the pack function to no use the Socket module which is tricky.
We normally would do :
#!/usr/bin/perl use Socket; #Resolve IP address into hostname sub ReverseLookup { my(@addrs,$xname,$xaliases,$xtype,$xlen,$addr); # @addrs=split(/\./,$_[0]); # $addr=pack('c4',@addrs[0..3]); # c or C - A signed/unsigned char +(8-bit integer) value $addr = inet_aton($_[0..3]); ($xname,$xaliases,$xtype,$xlen,@addrs)=gethostbyaddr($addr,2); return $xname; }
We don't know why MonkeyManChfKiller don't want to use modules, it's his choice but obviously this can be achieved in another way with perl.
Nice use of pack() which I don't see very often.

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[Discipulus]: he does not learn, nor teach, nor learn
[planetscape]: hello all
[stonecolddevin]: o/ planetscape
[Sinistral]: I think that just the sight of his username now causes a downvote storm. I agree, and the gratuitous use of formatting does make reading hard. I've given him +1 on things where there seemed to be actual good advice, but I think the big
[Sinistral]: nail in coffin was the rant against a Schwarzian Transform
[stonecolddevin]: at best, from what i've seen, his knowledge is accurate up to maybe 2002. the sheer volume of words is mostly worthy of a downvote in most cases though i think
[erix]: ITYM Schwartzian Transform :P
[erix]: hey planetscape :)
[planetscape]: howdy stonecolddevin, erix
[Sinistral]: eric Aye. I thought I typed that wrong. All hail Randall! I listen to him on FLOSS Weekly

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