### buffer_size

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.

##### Requirements

Header: `asio/buffer.hpp`

Convenience header: `asio.hpp`