constant Socket::Constants::MCAST_JOIN_GROUP
MCAST_JOIN_GROUP -> Integer
-
Join a multicast group
BasicSocket#getsockopt, BasicSocket#setsockopt の第2引数(optname)に使用します。
[SEE_ALSO] Socket::Constants::IPPROTO_IP, Socket::Constants::IPPROTO_IPV6, [RFC3678]
module Socket::Constants