...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Start an asynchronous read at the specified offset.
template< typename MutableBufferSequence, typename ReadHandler> void async_read_some_at( implementation_type & impl, boost::uint64_t offset, const MutableBufferSequence & buffers, ReadHandler handler);