ken@titan ~/tmp/pm_11151665_io_socket
$ ls -l
total 4
-rwxr-xr-x 1 ken None 387 Apr 15 13:51 client.pl
-rwxr-xr-x 1 ken None  50 Apr 15 11:57 process.sh
-rwxr-xr-x 1 ken None 464 Apr 15 13:58 server.pl
-rw-r--r-- 1 ken None 200 Apr 15 14:01 test.log

##</code><code>##

#!/usr/bin/env perl

use strict;
use warnings;

use IO::Socket;

my $client = IO::Socket::INET::->new(
    Proto => 'tcp',
    PeerAddr => 'localhost',
    PeerPort => 55555,
) || die "Can't open client socket: $IO::Socket::errstr";

for my $send_num (1 .. 5) {
    $client->print(<<"EOT");
GET /DATA_String/{send_num = $send_num}HTTP/1.1
host
connection
user-agent

EOT
    sleep 5;
}

##</code><code>##

#!/usr/bin/env perl

use strict;
use warnings;

use IO::Socket;

my $server = IO::Socket::INET::->new(
    Proto => 'tcp',
    LocalPort => 55555,
    Listen => SOMAXCONN,
    ReuseAddr => 1,
) || die "Can't open server socket: $IO::Socket::errstr";

my $client = $server->accept();
$client->autoflush;

while (defined(my $read = <$client>)) {
    chomp $read;

    if (index($read, 'GET /DATA_String/') == 0) {
        system('sh', 'process.sh', $read);
    }
}

##</code><code>##

#!/usr/bin/env sh

echo -e "$*" >> test.log 2>&1

##</code><code>##

$ cat test.log
GET /DATA_String/{send_num = 1}HTTP/1.1
GET /DATA_String/{send_num = 2}HTTP/1.1
GET /DATA_String/{send_num = 3}HTTP/1.1
GET /DATA_String/{send_num = 4}HTTP/1.1
GET /DATA_String/{send_num = 5}HTTP/1.1