NAME

       Socket::Multicast6 - Constructors and constants for IPv4 and IPv6 multicast socket
       operations.

SYNOPSIS

         use Socket::Multicast6 qw(:all);

         my $ip = getprotobyname( 'ip' );

         my $ip_mreq = pack_ip_mreq( inet_aton( $mcast_addr ), inet_aton( $if_addr ) );

         my $ipv6_mreq = pack_ipv6_mreq( inet_pton( AF_INET6, $mcast6_addr ), $if_index );

         setsockopt( $sock, $ip, IP_ADD_MEMBERSHIP, $ip_mreq )
           or die( "setsockopt IP_ADD_MEMBERSHIP failed: $!" );

         setsockopt( $sock, $ip, IP_DROP_MEMBERSHIP, $ip_mreq )
           or die( "setsockopt IP_DROP_MEMBERSHIP failed: $!" );

         setsockopt( $sock, $ip, IP_MULTICAST_LOOP, pack( 'C', $loop ) )
           or die( "setsockopt IP_MULTICAST_LOOP failed: $!" );

         setsockopt( $sock, $ip, IP_MULTICAST_TTL, pack( 'C', $ttl ) )
           or die( "setsockopt IP_MULTICAST_TTL failed: $!" );

DESCRIPTION

       This module is used to gain access to constants and utility functions used when
       manipulating multicast socket attributes.

       For simple, object-oriented way of doing the same thing, take a look at
       IO::Socket::Multicast6 or IO::Socket::Multicast.

EXPORTS

       By default nothing is exported, you can use the 'ipv4', 'ipv6' and 'independent' to export
       a specific protocol family, or 'all' to export all symbols.

FUNCTIONS

       $ip_mreq = pack_ip_mreq(MCAST_ADDR, IF_ADDR)
       $ip_mreq_source = pack_ip_mreq_source(MCAST_ADDR, SOURCE_ADDR, IF_ADDR)
       $ipv6_mreq = pack_ipv6_mreq(MCAST6_ADDR, IF_INDEX)

CONSTANTS

       IP_MULTICAST_IF
       IP_MULTICAST_TTL
       IP_MULTICAST_LOOP
       IP_ADD_MEMBERSHIP
       IP_DROP_MEMBERSHIP
       IP_ADD_SOURCE_MEMBERSHIP
       IP_DROP_SOURCE_MEMBERSHIP
       IPV6_MULTICAST_IF
       IPV6_MULTICAST_HOPS
       IPV6_MULTICAST_LOOP
       IPV6_JOIN_GROUP
       IPV6_LEAVE_GROUP
       MCAST_JOIN_GROUP
       MCAST_BLOCK_SOURCE
       MCAST_UNBLOCK_SOURCE
       MCAST_LEAVE_GROUP
       MCAST_JOIN_SOURCE_GROUP
       MCAST_LEAVE_SOURCE_GROUP

SEE ALSO

       IO::Socket::Multicast6 (The easier, object-oriented way)

AUTHOR

       Based on Socket::Multicast by Jonathan Steinert, <hachi@cpan.org> Socket::Multicast6 by
       Nicholas J Humfrey, <njh@cpan.org>

COPYRIGHT AND LICENSE

       Copyright (C) 2006 Nicholas J Humfrey Copyright (C) 2006 Jonathan Steinert

       This library is free software; you can redistribute it and/or modify it under the same
       terms as Perl itself, either Perl version 5.6.1 or, at your option, any later version of
       Perl 5 you may have available.