host lookup on specific nameserver

[Thilo Rusche]

Hi,

is there a way to perform a host lookup using a specific DNS server
instead of the default nameserver of the local machine in Java, short
of implementing the DNS protocol? For example, if the local machine is
configured to use /etc/hosts, 10.254.1.1 and 10.254.2.2, is there any
API call that allows me to query a different server? As far as I am
aware, the java.net package does not support this, and I could not
find any third party API for this either. Any pointers would be
appreciated.

Thanks!
Thilo

 

[Joseph Millar]

is there a way to perform a host lookup using a specific DNS server
instead of the default nameserver of the local machine in Java, short
of implementing the DNS protocol? For example, if the local machine is
configured to use /etc/hosts, 10.254.1.1 and 10.254.2.2, is there any
API call that allows me to query a different server? As far as I am
aware, the java.net package does not support this, and I could not
find any third party API for this either. Any pointers would be
appreciated.

I know of no way to do this in Java directly. There may be
some 3rd party class out there that do it, or you can use
various tools like nslookup using Runtime.exec().

--Joe

 

[Joseph Millar]

Yes. The hard part is doing it WITHOUT knowing a hard coded DNS
server.

[snip!]

Very cool, didn't know about this. Guess I need to find out
more about JNDI.

--Joe

 

[Thilo Rusche]

Yes. The hard part is doing it WITHOUT knowing a hard coded DNS
server.

Here is how you do it:

Thanks, just what I was looking for. I wasn't familiar with the
javax.naming package yet.

Cheers,
Thilo