#!/usr/bin/perl -w 
# server1.pl - a simple server 
 
use strict; 
use Socket; 
use IO::Socket; 
 
# use port 7890 as default 
use constant TEST_TCP_PORT => 7890; 
 
my $port =  TEST_TCP_PORT; 
my $proto = getprotobyname('tcp'); 
 
sub logmsg { print "$0 $$: @_ at ", scalar localtime, "\n" } 
# create a socket, make it reusable 
socket(SERVER, PF_INET, SOCK_STREAM, $proto) or die "Test socket failed : $!\n"; 
setsockopt(SERVER, SOL_SOCKET, SO_REUSEADDR, 1)  or die "Test setsock failed : $! \n"; 
 
# grab a port on this machine 
my $paddr = sockaddr_in($port, INADDR_ANY); 
 
# bind to a port, then listen 
bind(SERVER, $paddr)      or die "Test bind failed : $!"; 
listen(SERVER, SOMAXCONN) or die "Test listen failed : $!"; 
print "Server started on port $port \n"; 
 
# for each connection... 
my $client_addr; 
while ($client_addr = accept(CLIENT, SERVER)) { 
 
# find out who connected 
	my ($client_port, $client_ip) = sockaddr_in($client_addr); 
	my $client_ipnum = inet_ntoa($client_ip); 
	my $client_host =   gethostbyaddr($client_ip, AF_INET) ; 
 
# tell who connected  
#print "Got a connection from: $client_host"," [$client_ipnum]\n"; 
	logmsg "Got a connection from: $client_host"," [$client_ipnum]\n"; 
#------------------------------------------------------------------------------ 
 
#	foreach (1 .. 10){ 
#		print CLIENT "nO \n"; 
#	        CLIENT->flush(); 
# 
#	} 
 
	print CLIENT "Hello from the server \n\n "; 
	CLIENT->flush(); 
 
	my ($response,$temp); 
	while ( defined ($response = <CLIENT>)){ 
		#print length($response); 
		print "Response from client :$response" ; 
		 
		 $temp = $response; 
		print "Temporary : $temp " ; 
			print "Declined \n\n"; 
			last ; 
	} 
 
		print "Temporary : $temp \n", length($temp) ; 
		my @output = split (' ',$temp); 
		print $output[0];	 
		my $temp1 = $output[0]; 
		print "Temporary : $temp1 " ; 
		#print STDOUT "Sajan : ",length($response); 
		print STDOUT "Sajan : ", length($temp1); 
		if ( $temp1 eq "sajan" ){ 
			print "yes"; 
			print STDOUT "Authenticated : "; 
			CLIENT->flush(); 
		} 
 
#------------------------------------------------------------------------------ 
 
	close CLIENT; 
}

##</code><code>##

#! /usr/bin/perl -w 
# client1.pl - a simple client 
 
use strict; 
use Socket; 
use IO::Socket; 
 
use constant TEST_SERVER => "temp.random.com"; 
use constant TEST_TCP_PORT => 7890; 
 
# initialize host and port 
my $host =  TEST_SERVER ; 
my $port =  TEST_TCP_PORT ; 
my $proto = getprotobyname('tcp'); 
 
# get the port address 
 
my $iaddr = inet_aton($host); 
my $paddr = sockaddr_in($port, $iaddr); 
 
# create the socket, connect to the port 
 
socket(SOCKET, PF_INET, SOCK_STREAM, $proto) or die "socket: $!"; 
connect(SOCKET, $paddr) or die "connect: $!"; 
 
my $other_end        = getpeername(SOCKET) 
	or die "Couldn't identify other end: $!\n"; 
 
	($port, $iaddr)   = unpack_sockaddr_in($other_end); 
	my $actual_ip        = inet_ntoa($iaddr); 
	my $claimed_hostname = gethostbyaddr($iaddr, AF_INET); 
 
	print "Connected to server : $actual_ip =>> $claimed_hostname \n"; 
 
#-------------------------------------------------------- 
 
	my $line; 
 
		print SOCKET "sajan "; 
		SOCKET->autoflush(); 
 
	while ($line = <SOCKET>) { 
		print SOCKET "Client says hellooooo toooo !!!"; 
		SOCKET->autoflush(); 
		sleep(11); 
		print STDOUT "Sajan inside "; 
 
		print $line; 
		open my $tfh,  " >> /tmp/sajan.tmp"; 
		my $date = `date`;	 
 
		print $tfh "$date :: $line "; 
		close $tfh 
 
	}