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I'm trying to get this to work and It's driving me nuts. What I'm writing is a script to automate a set of whois lookups. My idea was to originally open a socket to whois.networksolutions.com and then reuse this socket for every lookup, reconnecting if needed.

However, it appears that I need to reconnect for every request via the socket. Am I fundamentally screwing something up about how sockets work, or is there a problem with my code?

INF is just a list of domains separated with newlines

#!/usr/bin/perl -wT
# This is an excerpt, though it should work OK.
use strict;
use IO::Socket;
use vars qw($socket);

$socket = whoisconnect('whois.networksolutions.com',5);  

my $fileRead = "test.txt"; 

open(INF,$fileRead) or die("Could someone tell me where $fileRead is? 
+$! \n");

while (<INF>){
   my $domain= $_;
   chomp($domain);

   if (!$socket->connected()){
   # Test connection
       print "Not Connected, attempting to reconnect. . .\n";
       $socket = whoisconnect('whois.networksolutions.com',5);
   }
   # If I uncomment the line below, this works beautifully.
   # $socket = whoisconnect('whois.networksolutions.com',5);
   $socket->send("$domain\n") or die ("Can't send data $!");
   my @answer= <$socket>;
   foreach(@answer){
      print $_;
   }
}

close(INF);

sub whoisconnect{
    my ($domain,$timeout)=@_;
    my $socket = IO::Socket::INET->new(PeerAddr => $domain,
                                PeerPort => 43,
                                Proto =>'tcp',
                                Type => SOCK_STREAM,
                                Timeout => $timeout,
                                Reuse=>1
                               )
    or die("Couldn't connect: $!\n");
    return $socket;
}
[download]

Now, this only works on the first domain sent from INF, and the connection test I'm trying doesn't return undef, rendering my connection test worthless.

If I put in a fresh connection (by uncommenting the indicated line) this works for every line of INF. What's going on? I was hoping to reuse a socket as a way to save a little speed. Is this a delusion?

Thanks!

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