content: package com.alibaba.arthas.tunnel.server.utils;
  
  import java.net.InetAddress;
  import java.net.NetworkInterface;
  import java.util.Enumeration;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * 
   * @author hengyunabc 2020-10-27
   *
   */
  public class InetAddressUtil {
      private final static Logger logger = LoggerFactory.getLogger(InetAddressUtil.class);
  
      /**
       * 获得本机IP。
       * <p>
       * 在超过一块网卡时会有问题，因为这里每次都只是取了第一块网卡绑定的IP地址
       */
      public static String getInetAddress() {
          try {
              Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
              InetAddress address = null;
              while (interfaces.hasMoreElements()) {
                  NetworkInterface ni = interfaces.nextElement();
                  Enumeration<InetAddress> addresses = ni.getInetAddresses();
                  while (addresses.hasMoreElements()) {
                      address = addresses.nextElement();
                      if (isValidAddress(address)) {
                          return address.getHostAddress();
                      }
                  }
              }
              logger.warn("Can not get the server IP address");
              return null;
          } catch (Throwable t) {
              logger.error("Can not get the server IP address", t);
              return null;
          }
      }
  
      public static boolean isValidAddress(InetAddress address) {
          return address != null && !address.isLoopbackAddress() // filter 127.x.x.x
                  && !address.isAnyLocalAddress() // filter 0.0.0.0
                  && !address.isLinkLocalAddress() // filter 169.254.0.0/16
                  && !address.getHostAddress().contains(":");// filter IPv6
      }
  }
  