Mega Code Archive
Get Current Environment Network IP
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//package org.netbeams.dsp.util;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;
//import org.apache.log4j.Logger;
/**
* Network Utility class for the network card on a gumstix
*
* @author Marcello de Sales (marcello.sales@gmail.com)
*
*/
public final class NetworkUtil {
/**
* The current host IP address is the IP address from the device.
*/
private static String currentHostIpAddress;
/**
* @return the current environment's IP address, taking into account the Internet connection to any of the available
* machine's Network interfaces. Examples of the outputs can be in octats or in IPV6 format.
* <pre>
* ==> wlan0
*
* fec0:0:0:9:213:e8ff:fef1:b717%4
* siteLocal: true
* isLoopback: false isIPV6: true
* 130.212.150.216 <<<<<<<<<<<------------- This is the one we want to grab so that we can.
* siteLocal: false address the DSP on the network.
* isLoopback: false
* isIPV6: false
*
* ==> lo
* 0:0:0:0:0:0:0:1%1
* siteLocal: false
* isLoopback: true
* isIPV6: true
* 127.0.0.1
* siteLocal: false
* isLoopback: true
* isIPV6: false
* </pre>
*/
public static String getCurrentEnvironmentNetworkIp() {
if (currentHostIpAddress == null) {
Enumeration<NetworkInterface> netInterfaces = null;
try {
netInterfaces = NetworkInterface.getNetworkInterfaces();
while (netInterfaces.hasMoreElements()) {
NetworkInterface ni = netInterfaces.nextElement();
Enumeration<InetAddress> address = ni.getInetAddresses();
while (address.hasMoreElements()) {
InetAddress addr = address.nextElement();
// log.debug("Inetaddress:" + addr.getHostAddress() + " loop? " + addr.isLoopbackAddress() + " local? "
// + addr.isSiteLocalAddress());
if (!addr.isLoopbackAddress() && addr.isSiteLocalAddress()
&& !(addr.getHostAddress().indexOf(":") > -1)) {
currentHostIpAddress = addr.getHostAddress();
}
}
}
if (currentHostIpAddress == null) {
currentHostIpAddress = "127.0.0.1";
}
} catch (SocketException e) {
// log.error("Somehow we have a socket error acquiring the host IP... Using loopback instead...");
currentHostIpAddress = "127.0.0.1";
}
}
return currentHostIpAddress;
}
}
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