Expose DNS Servers via public API

[Alan Bateman]

On 30/03/2017 15:59, Norman Maurer wrote:

> Thats why I tried to kick-off the topic :) Thanks for the quick reply 
> btw…. So is this list the right place for this discussion ?
>
I just checked the docs for the JNDI-DNS provider [1] and it documents 
that the provider updates the java.naming.provider.url property with the 
configuration when it isn't initially specified. So I think this will do 
what you want:

Hashtable<String, String> env = new Hashtable<>();
env.put(Context.INITIAL_CONTEXT_FACTORY, 
"com.sun.jndi.dns.DnsContextFactory");
env.put("java.naming.provider.url", "dns://");
DirContext ctx = new InitialDirContext(env);
String dnsUrls = (String) 
ctx.getEnvironment().get("java.naming.provider.url"));

-Alan

[1] http://docs.oracle.com/javase/8/docs/technotes/guides/jndi/jndi-dns.html