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.\" ========================================================================
.\"
.IX Title "Socket::Multicast6 3pm"
.TH Socket::Multicast6 3pm "2018-11-02" "perl v5.28.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.nh
.SH "NAME"
Socket::Multicast6 \- Constructors and constants for IPv4 and IPv6 multicast socket operations.
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&  use Socket::Multicast6 qw(:all);
\&
\&  my $ip = getprotobyname( \*(Aqip\*(Aq );
\&  
\&  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( \*(AqC\*(Aq, $loop ) )
\&    or die( "setsockopt IP_MULTICAST_LOOP failed: $!" );
\&
\&  setsockopt( $sock, $ip, IP_MULTICAST_TTL, pack( \*(AqC\*(Aq, $ttl ) )
\&    or die( "setsockopt IP_MULTICAST_TTL failed: $!" );
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This module is used to gain access to constants and utility functions
used when manipulating multicast socket attributes.
.PP
For simple, object-oriented way of doing the same thing, take a look 
at IO::Socket::Multicast6 or IO::Socket::Multicast.
.SH "EXPORTS"
.IX Header "EXPORTS"
By default nothing is exported, you can use the 'ipv4', 'ipv6' and 'independent' to 
export a specific protocol family, or 'all' to export all symbols.
.SH "FUNCTIONS"
.IX Header "FUNCTIONS"
.ie n .IP "$ip_mreq = pack_ip_mreq(\s-1MCAST_ADDR, IF_ADDR\s0)" 4
.el .IP "\f(CW$ip_mreq\fR = pack_ip_mreq(\s-1MCAST_ADDR, IF_ADDR\s0)" 4
.IX Item "$ip_mreq = pack_ip_mreq(MCAST_ADDR, IF_ADDR)"
.PD 0
.ie n .IP "$ip_mreq_source = pack_ip_mreq_source(\s-1MCAST_ADDR, SOURCE_ADDR, IF_ADDR\s0)" 4
.el .IP "\f(CW$ip_mreq_source\fR = pack_ip_mreq_source(\s-1MCAST_ADDR, SOURCE_ADDR, IF_ADDR\s0)" 4
.IX Item "$ip_mreq_source = pack_ip_mreq_source(MCAST_ADDR, SOURCE_ADDR, IF_ADDR)"
.ie n .IP "$ipv6_mreq = pack_ipv6_mreq(\s-1MCAST6_ADDR, IF_INDEX\s0)" 4
.el .IP "\f(CW$ipv6_mreq\fR = pack_ipv6_mreq(\s-1MCAST6_ADDR, IF_INDEX\s0)" 4
.IX Item "$ipv6_mreq = pack_ipv6_mreq(MCAST6_ADDR, IF_INDEX)"
.PD
.SH "CONSTANTS"
.IX Header "CONSTANTS"
.IP "\s-1IP_MULTICAST_IF\s0" 4
.IX Item "IP_MULTICAST_IF"
.PD 0
.IP "\s-1IP_MULTICAST_TTL\s0" 4
.IX Item "IP_MULTICAST_TTL"
.IP "\s-1IP_MULTICAST_LOOP\s0" 4
.IX Item "IP_MULTICAST_LOOP"
.IP "\s-1IP_ADD_MEMBERSHIP\s0" 4
.IX Item "IP_ADD_MEMBERSHIP"
.IP "\s-1IP_DROP_MEMBERSHIP\s0" 4
.IX Item "IP_DROP_MEMBERSHIP"
.IP "\s-1IP_ADD_SOURCE_MEMBERSHIP\s0" 4
.IX Item "IP_ADD_SOURCE_MEMBERSHIP"
.IP "\s-1IP_DROP_SOURCE_MEMBERSHIP\s0" 4
.IX Item "IP_DROP_SOURCE_MEMBERSHIP"
.IP "\s-1IPV6_MULTICAST_IF\s0" 4
.IX Item "IPV6_MULTICAST_IF"
.IP "\s-1IPV6_MULTICAST_HOPS\s0" 4
.IX Item "IPV6_MULTICAST_HOPS"
.IP "\s-1IPV6_MULTICAST_LOOP\s0" 4
.IX Item "IPV6_MULTICAST_LOOP"
.IP "\s-1IPV6_JOIN_GROUP\s0" 4
.IX Item "IPV6_JOIN_GROUP"
.IP "\s-1IPV6_LEAVE_GROUP\s0" 4
.IX Item "IPV6_LEAVE_GROUP"
.IP "\s-1MCAST_JOIN_GROUP\s0" 4
.IX Item "MCAST_JOIN_GROUP"
.IP "\s-1MCAST_BLOCK_SOURCE\s0" 4
.IX Item "MCAST_BLOCK_SOURCE"
.IP "\s-1MCAST_UNBLOCK_SOURCE\s0" 4
.IX Item "MCAST_UNBLOCK_SOURCE"
.IP "\s-1MCAST_LEAVE_GROUP\s0" 4
.IX Item "MCAST_LEAVE_GROUP"
.IP "\s-1MCAST_JOIN_SOURCE_GROUP\s0" 4
.IX Item "MCAST_JOIN_SOURCE_GROUP"
.IP "\s-1MCAST_LEAVE_SOURCE_GROUP\s0" 4
.IX Item "MCAST_LEAVE_SOURCE_GROUP"
.PD
.SH "SEE ALSO"
.IX Header "SEE ALSO"
IO::Socket::Multicast6 (The easier, object-oriented way)
.SH "AUTHOR"
.IX Header "AUTHOR"
Based on Socket::Multicast by Jonathan Steinert, <hachi@cpan.org>
Socket::Multicast6 by Nicholas J Humfrey, <njh@cpan.org>
.SH "COPYRIGHT AND LICENSE"
.IX Header "COPYRIGHT AND LICENSE"
Copyright (C) 2006 Nicholas J Humfrey
Copyright (C) 2006 Jonathan Steinert
.PP
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.