Re: properties for DNSJavaNameService

[Brian W. <bwe...@xb...>]

On Mon, 8 Aug 2005, Stefan Groschupf wrote:

> i wish to use javadns to fix some bottleneck my webcrawler has with dns.
> Actually I would love to test the usage of javadns as alternative 
> implementation of sun.net.spi.nameservice.NameService.
>
> I notice that Paul Cowan is one of the authors of 
> org.xbill.DNS.spi.DNSJavaNameService.
> Since I had seen a older implementation of this interface from Paul that 
> supports some properties
> (http://buzzsurf.com/java/dns/doc/com/buzzsurf/dns/DNSJavaNameService.html)
> I asking my self if this properties are still supported but may not 
> documented.

The included name services provider uses the:
 	sun.net.spi.nameservice.nameservers
 	sun.net.spi.nameservice.domain
 	java.net.preferIPv6Addresses
as documented.

> I'm very interested to provide a set of DNS servers and the possibility to 
> load balance in a round robbing style, can this somehow configured just by 
> system properties or do I need to code it myself somehow.

Setting the servers can be done using system properties.  To enable 
round-robin load balancing, you'd need to write code which called 
Lookup.getDefaultResolver() to obtain the default Resolver object and 
ExtendedResolver.setLoadBalance() to enable load balancing.

Brian