Start an asynchronous send on a connected socket.
template< typename ConstBufferSequence, typename WriteHandler> void-or-deduced async_send( const ConstBufferSequence & buffers, WriteHandler handler); » more... template< typename ConstBufferSequence, typename WriteHandler> void-or-deduced async_send( const ConstBufferSequence & buffers, socket_base::message_flags flags, WriteHandler handler); » more...