Socket option to join a multicast group on a specified interface.

typedef implementation_defined join_group;

Implements the IPPROTO_IP/IP_ADD_MEMBERSHIP socket option.

Examples

Setting the option to join a multicast group:

asio::ip::udp::socket socket(my_context);
...
asio::ip::address multicast_address =
  asio::ip::address::from_string("225.0.0.1");
asio::ip::multicast::join_group option(multicast_address);
socket.set_option(option);

Requirements

Header: asio/ip/multicast.hpp

Convenience header: asio.hpp