Synchronously reverse-resolves address to determine its associated hostname.
If the DNS resolution fails, error (if non-null) will be set to a value from #GResolverError.
If cancellable is non-null, it can be used to cancel the operation, in which case error (if non-null) will be set to gio.types.IOErrorEnum.Cancelled.
the address to reverse-resolve
a #GCancellable, or null
a hostname (either ASCII-only, or in ASCII-encoded form), or null on error.
Synchronously reverse-resolves address to determine its associated hostname.
If the DNS resolution fails, error (if non-null) will be set to a value from #GResolverError.
If cancellable is non-null, it can be used to cancel the operation, in which case error (if non-null) will be set to gio.types.IOErrorEnum.Cancelled.