If you are really running the actual server code you showed, your code would greatly benefit from

use strict;

[download]

because you have two or three variables confusingly named the same:

$SIG{ 'TERM' } = $SIG{ 'INT' } = sub { $socket->close(); };
$SIG{ 'PIPE' } = 'IGNORE';
my $client_socket;

# creating a listening socket
my $socket = new IO::Socket::INET (
    LocalHost => '0.0.0.0',
    LocalPort => $port,
    Proto => 'tcp',
    Listen => 5,
    Reuse => 1
);

[download]

Either the declaration of $socket should be moved above your $SIG{ 'TERM' } = $SIG{ 'INT' } handlers, or the variable $socket is intended to be $client_socket, and then the declaration of $client_socket should be moved upwards.

If you want to dissociate your process children from their parent, you might have to do something like Complete Dissociation of Child from Parent and/or the double fork.

In reply to Re: IO:Socket::INET: Strategies against death of child processes on broken pipe by Corion
in thread IO:Socket::INET: Strategies against death of child processes on broken pipe by Bloehdian

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