ip::multicast::hops

Socket option for time-to-live associated with outgoing multicast packets.

typedef implementation_defined hops;

Name	Description
container	Determine the container for the specified elements.
rebind	Rebind the traits to a new set of signatures.
receive_cancelled_signature	The signature of a channel cancellation notification.
receive_closed_signature	The signature of a channel closed notification.

Name	Description
invoke_receive_cancelled [static]	Invoke the specified handler with a cancellation notification.
invoke_receive_closed [static]	Invoke the specified handler with a closed notification.

Implements the IPPROTO_IP/IP_MULTICAST_TTL socket option.

Setting the option:

boost::asio::ip::udp::socket socket(my_context);
...
boost::asio::ip::multicast::hops option(4);
socket.set_option(option);

Getting the current option value:

boost::asio::ip::udp::socket socket(my_context);
...
boost::asio::ip::multicast::hops option;
socket.get_option(option);
int ttl = option.value();

Header: boost/asio/ip/multicast.hpp

Convenience header: boost/asio.hpp