$proto = getprotobyname("tcp");
$iaddr = inet_aton($host) or
    die "Invalid host : $!\n";
$paddr = sockaddr_in($port,$iaddr);

socket(SOCKET,PF_INET,SOCK_STREAM,$proto) or
    die "socket: $!\n";

connect(SOCKET,$paddr) or
    die "connect: $!\n";

print "connected\n";

print SOCKET "HELLO\n";
print SOCKET "END\n";
print "finished sending\n";


while (chomp($line = <SOCKET>))
{
    print $line;
    if ($line eq "END")
    {
        print SOCKET "received $line\n";
        print SOCKET "END";
    }
}

close SOCKET or die "close: $!";