public static String getLocalAddress()

in ons-core/ons-trace-core/src/main/java/org/apache/rocketmq/ons/open/trace/core/utils/MixUtils.java [31:85]
45 lines of code
12 McCabe index (conditional complexity)

    public static String getLocalAddress() {
        try {

            Enumeration<NetworkInterface> enumeration = NetworkInterface.getNetworkInterfaces();
            ArrayList<String> ipv4Result = new ArrayList<String>();
            ArrayList<String> ipv6Result = new ArrayList<String>();
            while (enumeration.hasMoreElements()) {
                final NetworkInterface networkInterface = enumeration.nextElement();
                final Enumeration<InetAddress> en = networkInterface.getInetAddresses();
                while (en.hasMoreElements()) {
                    final InetAddress address = en.nextElement();
                    if (!address.isLoopbackAddress()) {
                        if (address instanceof Inet6Address) {
                            ipv6Result.add(normalizeHostAddress(address));
                        }
                        else {
                            ipv4Result.add(normalizeHostAddress(address));
                        }
                    }
                }
            }


            if (!ipv4Result.isEmpty()) {
                for (String ip : ipv4Result) {
                    if (ip.startsWith("127.0") || ip.startsWith("192.168")) {
                        continue;
                    }

                    return ip;
                }


                return ipv4Result.get(ipv4Result.size() - 1);
            }

            else if (!ipv6Result.isEmpty()) {
                return ipv6Result.get(0);
            }

            final InetAddress localHost = InetAddress.getLocalHost();
            return normalizeHostAddress(localHost);
        }
        catch (SocketException e) {
            e.printStackTrace();
        }
        catch (UnknownHostException e) {
            e.printStackTrace();
        }
        finally {

        }

        return null;
    }