== cobalt/io/resolver.hpp

The resolver allows looking up the endpoints for a given address and service.

[source,cpp]
----
struct resolver
{
  resolver(const executor & exec = this_thread::get_executor());
  resolver(resolver && ) = delete;

  void cancel();

  // Produces a endpoint_sequence
  [[nodiscard]] auto resolve(std::string_view host, std::string_view service);
};


// Short hand for performing a single lookup.
auto lookup(std::string_view host, std::string_view service,
         const executor & exec = this_thread::get_executor());

----