rocketmq中的代码

  1. public static byte[] getIP() {
  2.     try {
  3.         Enumeration allNetInterfaces = NetworkInterface.getNetworkInterfaces();
  4.         InetAddress ip = null;
  5.         byte[] internalIP = null;
  6.         while (allNetInterfaces.hasMoreElements()) {
  7.             NetworkInterface netInterface = (NetworkInterface) allNetInterfaces.nextElement();
  8.             Enumeration addresses = netInterface.getInetAddresses();
  9.             while (addresses.hasMoreElements()) {
  10.                 ip = (InetAddress) addresses.nextElement();
  11.                 if (ip != null && ip instanceof Inet4Address) {
  12.                     byte[] ipByte = ip.getAddress();
  13.                     if (ipByte.length == 4) {
  14.                         if (ipCheck(ipByte)) {
  15.                             if (!isInternalIP(ipByte)) {
  16.                                 return ipByte;
  17.                             } else if (internalIP == null) {
  18.                                 internalIP = ipByte;
  19.                             }
  20.                         }
  21.                     }
  22.                 } else if (ip != null && ip instanceof Inet6Address) {
  23.                     byte[] ipByte = ip.getAddress();
  24.                     if (ipByte.length == 16) {
  25.                         if (ipV6Check(ipByte)) {
  26.                             if (!isInternalV6IP(ip)) {
  27.                                 return ipByte;
  28.                             }
  29.                         }
  30.                     }
  31.                 }
  32.             }
  33.         }
  34.         if (internalIP != null) {
  35.             return internalIP;
  36.         } else {
  37.             throw new RuntimeException("Can not get local ip");
  38.         }
  39.     } catch (Exception e) {
  40.         throw new RuntimeException("Can not get local ip", e);
  41.     }
  42. }

apollo代码

  1. private void load() {
  2.     String ip = getProperty("host.ip");
  4.     if (ip != null) {
  5.       try {
  6.         m_local = InetAddress.getByName(ip);
  7.         return;
  8.       } catch (Exception e) {
  9.         System.err.println(e);
  10.         // ignore
  11.       }
  12.     }
  14.     try {
  15.       Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
  16.       List<NetworkInterface> nis = interfaces == null ? Collections.<NetworkInterface>emptyList() : Collections.list(interfaces);
  17.       List<InetAddress> addresses = new ArrayList<InetAddress>();
  18.       InetAddress local = null;
  20.       try {
  21.         for (NetworkInterface ni : nis) {
  22.           if (ni.isUp() && !ni.isLoopback()) {
  23.             addresses.addAll(Collections.list(ni.getInetAddresses()));
  24.           }
  25.         }
  26.         local = findValidateIp(addresses);
  27.       } catch (Exception e) {
  28.         // ignore
  29.       }
  30.       if (local != null) {
  31.         m_local = local;
  32.         return;
  33.       }
  34.     } catch (SocketException e) {
  35.       // ignore it
  36.     }
  38.     m_local = InetAddress.getLoopbackAddress();
  39.   }