Motivation:
DnsNameResolver#resolveAll(String) may return duplicate results in the event that the original hostname DNS response includes an IP address X and a CNAME that ends up resolving the same IP address X. This behavior is inconsistent with the JDK’s resolver and is unexpected to retrun a List with duplicate entries from a resolveAll(..) call.
Modifications:
- Filter out duplicates
- Add unit test
Result:
More consistent and less suprising behavior
4bd068edf0