Optional findFirstAppropriateAddress()

in src/main/java/com/ericsson/gerrit/plugins/highavailability/peers/jgroups/InetAddressFinder.java [56:74]

• 19 lines of code
• 11 McCabe index (conditional complexity)

  Optional<InetAddress> findFirstAppropriateAddress(List<NetworkInterface> networkInterfaces)
      throws SocketException {
    for (NetworkInterface ni : networkInterfaces) {
      if (ni.isLoopback() || !ni.isUp() || !ni.supportsMulticast() || shouldSkip(ni.getName())) {
        continue;
      }
      Enumeration<InetAddress> inetAddresses = ni.getInetAddresses();
      while (inetAddresses.hasMoreElements()) {
        InetAddress a = inetAddresses.nextElement();
        if (preferIPv4 && a instanceof Inet4Address) {
          return Optional.of(a);
        }
        if (!preferIPv4 && a instanceof Inet6Address) {
          return Optional.of(a);
        }
      }
    }
    return Optional.empty();
  }