Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

Asynchronously perform forward resolution of a query to a list of entries.

template<
    typename ResolveHandler>
void-or-deduced async_resolve(
    const query & q,
    ResolveHandler handler);
  » more...

Asynchronously perform reverse resolution of an endpoint to a list of entries.

template<
    typename ResolveHandler>
void-or-deduced async_resolve(
    const endpoint_type & e,
    ResolveHandler handler);
  » more...