/*
* FindBugs - Find Bugs in Java programs
* Copyright (C) 2003-2008 University of Maryland
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package edu.umd.cs.findbugs.cloud.db;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import edu.umd.cs.findbugs.util.Util;
/**
* @author pugh
*/
public final class IPAddressLookup {
volatile String ipAddress = "unknown";
CountDownLatch latch = new CountDownLatch(1);
IPAddressLookup() {
Thread t = new Thread(new Runnable() {
public void run() {
BufferedReader in = null;
try {
URL u = new URL("http://www.whatismyip.org/");
URLConnection c = u.openConnection();
in = new BufferedReader(new InputStreamReader(c.getInputStream()));
ipAddress = in.readLine();
} catch (IOException e) {
assert true;
} finally {
latch.countDown();
Util.closeSilently(in);
}
}
});
t.setDaemon(true);
t.start();
}
public String get() {
try {
latch.await(100, TimeUnit.MILLISECONDS);
} catch (InterruptedException e) {
assert true;
}
return ipAddress;
}
}