InetAddress should utilize networkaddress.cache.ttl for getLocalHost() too

[Alan Bateman]

On 05/07/2012 07:10, Deven You wrote:
> Hi All,
>
> I noticed that InetAddress.getLocalHost() uses cache to improve the 
> performance. However the default implementation is caching local host 
> within 5 seconds.
>
> From the spec, networkaddress.cache.ttl should be used to control the 
> cache behaviour and I think it is a better solution.
>
> For example, if the networkaddress.cache.ttl is set to -1 which means 
> always cache the local host then we can avoid unnecessary operations 
> on getAddressesFromNameService to improve the performance.
>
> I have made a patch for this solution, so anyone would like to take a 
> look?
>
> [1] http://cr.openjdk.java.net/~littlee/OJDK-527/webrev.00/ 
> <http://cr.openjdk.java.net/%7Elittlee/OJDK-527/webrev.00/>
> Thanks a lot!
> -- 
> Best Regards,
>
> Deven
I'm not sure about this one as I suspect it will cause problems in DHCP 
or any environments where the host addresses changes, say moving to a 
different wireless network or waking up a machine after hibernation.

-Alan
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