print "Received from Server : $data1\n";
  
##</code><code>##

print "Received from Server :", %$data1, $/;
 # OR
print "Received from Server :", Dumper($data1), $/;

##</code><code>##

#tcpserver.pl

#!/usr/bin/perl
use strict;
use warnings;
use IO::Socket::INET;
use Storable qw(nfreeze);

$| = 1;

my ( $socket,      $clientsocket );
my ( $peeraddress, $peerport );
my $data;
my $line;

my $inputfile = "list.txt";
my %names     = ();
my $reftohash;

open my $fh, '<', $inputfile or die "can't open file: $!";    # read file

while ( $line = <$fh> ) {
    chomp $line;
    $names{$line} = 1;
}
close $fh or die "can't close file: $!";

#set hash reference
$reftohash = \%names;

$socket = new IO::Socket::INET(
    LocalHost => 'localhost',
    LocalPort => '5000',
    Proto     => 'tcp',
    Listen    => 5,
    Reuse     => 1
) or die "ERROR in Socket Creation : $!\n";

#while(1) {
$clientsocket = $socket->accept();
print $clientsocket nfreeze($reftohash);

#}

$socket->close();

##</code><code>##

#tcpclient.pl

#!/usr/bin/perl
use strict;
use warnings;
use Data::Dumper;
use IO::Socket::INET;
use Storable qw(thaw);

$| = 1;

my $socket;
my $data;
my $data1;

$socket = new IO::Socket::INET(
    PeerHost => 'localhost',
    PeerPort => '5000',
    Proto    => 'tcp',
) or die "ERROR in Socket Creation : $!\n";

$data = <$socket>;

$data1 = thaw($data);

print "Received from Server :", Dumper($data1), $/; # OR %$data1

foreach my $i ( keys %{$data1} ) {
    print "$i=>$data1->{$i}\n";
}

$socket->close();