Synchronously reverse-resolves address to determine its associated hostname.
If the DNS resolution fails, throws (if non-null) will be set to a value from ResolverError.
If cancellable is non-null, it can be used to cancel the operation, in which
case throws (if non-null) will be set to
g_io_error_cancelled.
| this |
a Resolver |
| address |
the address to reverse-resolve |
| cancellable |
a Cancellable, or null |
|
a hostname (either ASCII-only, or in ASCII-encoded form), or null on error. |