Java Network Interface Get getLinkLocalScopeId()

Description

get Link Local Scope Id

License

Apache License

Declaration

public static int getLinkLocalScopeId() throws IOException 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.io.IOException;

import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class Main {
    public static int getLinkLocalScopeId() throws IOException {
        for (InetAddress a : getIPAddresses()) {
            if (a instanceof Inet6Address && a.isLinkLocalAddress()) {
                return ((Inet6Address) a).getScopeId();
            }/*from   w w w  .j  av  a2s  . c  om*/
        }
        throw new IOException("No IPv6 support on this device");
    }

    /**
     * List all IP addresses of the device, except loopback addresses.
     * 
     * @return a List of IP addresses
     * @throws IOException
     */
    public static List<InetAddress> getIPAddresses() throws IOException {
        List<InetAddress> addresses = new ArrayList<InetAddress>();
        List<NetworkInterface> interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
        for (NetworkInterface intf : interfaces) {
            List<InetAddress> addrs = Collections.list(intf.getInetAddresses());
            for (InetAddress a : addrs) {
                if (a.isLoopbackAddress()) {
                    continue;
                }
                addresses.add(a);
            }
        }
        return addresses;
    }
}

Related

1. getInterfaces()
2. getInterfaces()
3. getInterfaces()
4. getInterfaces(final String interfaceName)
5. getKey()
6. getLocalInterfaces()
7. getLocalMac()
8. getLoopbackInterface()
9. getLoopbackInterfaceName()