I am trying to insert delay between messages that are sent from server socket to client socket, but only the first one is reaching the client. Server socket code:

use IO::Socket::INET;
 use strict;
use warnings;
# auto-flush on socket
$| = 1;
 
# creating a listening socket
my $socket = new IO::Socket::INET (
    LocalHost => '0.0.0.0',
    LocalPort => "1111",
    Proto => 'tcp',
    Listen => 1,
    Reuse => 1
);
die "cannot create socket $!\n" unless $socket;
print "server waiting for client connection on port 1111\n";
 
while(1)
{
    # waiting for a new client connection
    my $client_socket = $socket->accept();
 
    # get information about a newly connected client
    my $client_address = $client_socket->peerhost();
    my $client_port = $client_socket->peerport();
    print "connection from $client_address:$client_port\n";
 
    # read up to 1024 characters from the connected client
    my $data = "";
    $client_socket->recv($data, 1024);
    print "received data: $data\n";
 
    # write response data to the connected client
    $data = "ok";
   
    #******************************
    #Sending three messages but only one is reaching the client.
    sleep(2);
 $client_socket->send($data);
    sleep(2);
 $client_socket->send($data);
    sleep(2);
 $client_socket->send($data);

    #******************************

    # notify client that response has been sent
    shutdown($client_socket, 1);
}
 
$socket->close();
[download]

Client socket code:

use IO::Socket::INET;
 
# auto-flush on socket
$| = 1;
 
# create a connecting socket
my $socket = new IO::Socket::INET (
    PeerHost => '192.168.1.104',
    PeerPort => '1111',
    Proto => 'tcp',
);
die "cannot connect to the server $!\n" unless $socket;
print "connected to the server\n";
 
# data to send to a server
my $req = 'hello world';
my $size = $socket->send($req);
print "sent data of length $size\n";
 
# notify server that request has been sent
shutdown($socket, 1);
 
# receive a response of up to 1024 characters from server
my $response = "";
$socket->recv($response, 1024);
print "received response: $response\n";
 
$socket->close();
[download]

Output:

received response: ok
[download]

Any help will be very appreciated.

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