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/**
* A network library for processing which supports UDP, TCP and Multicast.
*
* (c) 2004-2012
*
* 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
*
* @author Andreas Schlegel http://www.sojamo.de
* @modified 12/23/2012
* @version 0.9.9
*/
package netP5;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.StringTokenizer;
/**
* some description
* @author andreas schlegel
*/
public class NetInfo {
public NetInfo() {
}
public static void print() {
try {
java.net.InetAddress i = java.net.InetAddress.getLocalHost();
System.out.println("### hostname/ip " + i); // name and IP address
System.out.println("### hostname " + i.getHostName()); // name
System.out.println("### ip " + i.getHostAddress()); // IP address
// only
}
catch (Exception e) {
e.printStackTrace();
}
}
public static String getHostAddress() {
try {
java.net.InetAddress i = java.net.InetAddress.getLocalHost();
return i.getHostAddress();
}
catch (Exception e) {
}
return "ERROR";
}
public static String lan() {
Logger.printProcess("NetInfo.checkNetworkStatus : ", getHostAddress());
return getHostAddress();
}
public static String wan() {
// create URL object.
String myIp = null;
URL u = null;
String URLstring = "http://checkip.dyndns.org";
boolean isConnectedToInternet = false;
Logger.printProcess("NetInfo.checkNetworkStatus",
"Checking internet connection ...");
try {
u = new URL(URLstring);
}
catch (MalformedURLException e) {
Logger.printError("NetInfo.checkNetworkStatus", "Bad URL "
+ URLstring + " " + e);
}
InputStream in = null;
try {
in = u.openStream();
isConnectedToInternet = true;
}
catch (IOException e) {
Logger.printError("NetInfo.checkNetworkStatus",
"! Unable to open " + URLstring + "\n" + "Either the "
+ URLstring
+ " is unavailable or this machine is not"
+ "connected to the internet !");
}
if (isConnectedToInternet) {
try {
BufferedReader br = new BufferedReader(
new InputStreamReader(in));
String line;
String theToken = "";
while ( (line = br.readLine()) != null) {
theToken += line;
}
br.close();
StringTokenizer st = new StringTokenizer(theToken, " <>", false);
while (st.hasMoreTokens()) {
String myToken = st.nextToken();
if (myToken.compareTo("Address:") == 0) {
myToken = st.nextToken();
myIp = myToken;
Logger.printProcess("NetInfo.checkNetworkStatus",
"WAN address : " + myIp);
}
}
}
catch (IOException e) {
Logger.printError("NetInfo.checkNetworkStatus",
"I/O error reading " + URLstring
+ " Exception = " + e);
}
}
return myIp;
}
/**
*
* @param args String[]
* @invisible
*/
public static void main(String[] args) {
NetInfo.wan();
}
}
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