Begins asynchronously reverse-resolving address to determine its associated hostname, and eventually calls callback
, which must call lookup_by_address_async.end to get the final result.
| this |
a Resolver |
| address |
the address to reverse-resolve |
| cancellable |
a Cancellable, or null |
| callback |
callback to call after resolution completes |
| user_data |
data for |