|  | 
Get the total number of bytes in a buffer sequence.
template< typename BufferSequence> std::size_t buffer_size( const BufferSequence & b);
        The buffer_size function
        determines the total size of all buffers in the buffer sequence, as if computed
        as follows:
      
size_t total_size = 0; auto i = asio::buffer_sequence_begin(buffers); auto end = asio::buffer_sequence_end(buffers); for (; i != end; ++i) { const_buffer b(*i); total_size += b.size(); } return total_size;
        The BufferSequence template
        parameter may meet either of the ConstBufferSequence
        or MutableBufferSequence
        type requirements.
      
        Header: asio/buffer.hpp
      
        Convenience header: asio.hpp