Why does InetAddress.getLocalHost work differently in Win and Linux?

Try something like this:

-

import java.net.InetAddress;

import java.util.Scanner;

class Net {

public static void main(String[] args) {

Scanner myAddr = new Scanner(System.in);

String hostAddr = myAddr.next();

try {

InetAddress ipAddr = InetAddress.getByName(hostAddr);

System.out.println(ipAddr);

}

catch (java.net.UnknownHostException exc) {

System.out.println("Host not found");

}

}

}

--

The output should prompt for the hostname. Like my local hostname is: UT1DCS107. I type that and hit Enter, and the output is:

ut1dcs107

ut1dcs107/192.168.1.211

Try that, it should work the same on any OS. localhost should be designated for the loopback interface in TCP/IP. If you're seeing otherwise in Windows, your lmhosts file might be misconfigured.

Hope that helps.

command0a at 2007-7-8 23:39:58 >

Not sure if this is what you're looking for, but I have found this function to work properly under both windows and linux

public boolean isLoopback(String ip)

{

try

{

for (Enumeration<NetworkInterface> i = NetworkInterface.getNetworkInterfaces(); i.hasMoreElements();)

for (Enumeration<InetAddress> j = i.nextElement().getInetAddresses(); j.hasMoreElements();)

if(ip.equals(j.nextElement().getHostAddress())) return true;

}

catch (SocketException se) {}

return false;

}

Cheers

duckbilla at 2007-7-8 23:39:58 >