Perl - Client Server

#!/usr/bin/perl -w
# Filename : server.pl
 
use strict;
use Socket;
 
# use port 7890 as default
my $port = shift || 7890;
my $proto = getprotobyname('tcp');
my $server = "localhost";  # Host IP running the server
 
# create a socket, make it reusable
socket(SOCKET, PF_INET, SOCK_STREAM, $proto)
or die "Can't open socket $!\n";
setsockopt(SOCKET, SOL_SOCKET, SO_REUSEADDR, 1)
or die "Can't set socket option to SO_REUSEADDR $!\n";
 
# bind to a port, then listen
bind( SOCKET, pack_sockaddr_in($port, inet_aton($server)))
or die "Can't bind to port $port! \n";
 
listen(SOCKET, 5) or die "listen: $!";
print "SERVER started on port $port\n";
 
# accepting a connection
my $client_addr;
while ($client_addr = accept(NEW_SOCKET, SOCKET)) {
    # send them a message, close connection
    my $name = gethostbyaddr($client_addr, AF_INET);
    print NEW_SOCKET "Smile from the server";
    print "Connection received from $client_addr $name\n";
    close NEW_SOCKET;
}
 

#!/usr/bin/perl -w
# Filename : client.pl
 
use strict;
use Socket;
 
# initialize host and port
my $host = shift || 'localhost';
my $port = shift || 7890;
my $server = "localhost";  # Host IP running the server
 
# create the socket, connect to the port
socket(SOCKET,PF_INET,SOCK_STREAM,(getprotobyname('tcp'))[2])
or die "Can't create a socket $!\n";
connect( SOCKET, pack_sockaddr_in($port, inet_aton($server)))
or die "Can't connect to port $port! \n";
 
my $line;
while ($line = ) {
    print "$line\n";
}
close SOCKET or die "close: $!";