Send multiple datagrams to the specified endpoints.

template<
    typename ConstBufferSequences,
    typename EndpointSequence>
std::size_t send_to_multiple(
    ConstBufferSequences && buffer_sequences,
    EndpointSequence && endpoints);
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template<
    typename ConstBufferSequences,
    typename EndpointSequence>
std::size_t send_to_multiple(
    ConstBufferSequences && buffer_sequences,
    EndpointSequence && endpoints,
    socket_base::message_flags flags);
  » more...

template<
    typename ConstBufferSequences,
    typename EndpointSequence>
std::size_t send_to_multiple(
    ConstBufferSequences && buffer_sequences,
    EndpointSequence && endpoints,
    socket_base::message_flags flags,
    boost::system::error_code & ec);
  » more...