#!/usr/bin/perl
# file: time_of_day_cli.pl
# Figure 21.5: Time of Day Multicast Client

use IO::Socket;
use IO::Socket::Multicast;

my $port = shift || 2070;
my $addr = shift || '224.225.226.227';

# set up socket
my $sock = IO::Socket::Multicast->new(LocalPort=>$port)
  or die "Can't create socket: $!";

# add multicast address
$sock->mcast_add($addr) or die "mcast_add: $!";
while (1) {
  my ($message,$peer);
  die "recv error: $!" unless $peer = recv($sock,$message,1024,0);
  my ($port,$peeraddr) = sockaddr_in($peer);
  print inet_ntoa($peeraddr) . ": $message\n";
}

__END__