Start an asynchronous send on a connected socket.
template< typename ConstBufferSequence, typename WriteToken = default_completion_token_t<executor_type>> DEDUCED async_send( const ConstBufferSequence & buffers, WriteToken && token = default_completion_token_t< executor_type >()); » more... template< typename ConstBufferSequence, typename WriteToken = default_completion_token_t<executor_type>> DEDUCED async_send( const ConstBufferSequence & buffers, socket_base::message_flags flags, WriteToken && token = default_completion_token_t< executor_type >()); » more...