private static InetAddress chooseAddress()

in hawtio-util/src/main/java/io/hawt/util/Hosts.java [113:150]
33 lines of code
13 McCabe index (conditional complexity)

    private static InetAddress chooseAddress(String preferred) throws UnknownHostException {
        Set<InetAddress> addresses = getAddresses();
        if (preferred != null && !preferred.isEmpty()) {
            //Favor preferred address if exists
            try {
                InetAddress preferredAddress = InetAddress.getByName(preferred);
                if (addresses != null && addresses.contains(preferredAddress)) {
                    LOG.info("preferred address is " + preferredAddress.getHostAddress() + " for host " + preferredAddress.getHostName());
                    return preferredAddress;
                }
            } catch (UnknownHostException e) {
                //noop
            }
            for (InetAddress address : addresses) {
                if (preferred.equals(address.getHostName())) {
                    return address;
                }
            }
            StringBuffer hostNameBuffer = new StringBuffer();
            for (InetAddress address : addresses) {
                if (hostNameBuffer.length() > 0) {
                    hostNameBuffer.append(", ");
                }
                hostNameBuffer.append(address.getHostName() + "/" + address.getHostAddress());
            }
            LOG.warn("Could not find network address for preferred '" + preferred + "' when the addresses were: " + hostNameBuffer);
        }
        if (addresses.contains(InetAddress.getLocalHost())) {
            //Then if local host address is not bound to a loop-back interface, use it.
            return InetAddress.getLocalHost();
        } else if (addresses != null && !addresses.isEmpty()) {
            //else return the first available addrress
            return addresses.toArray(new InetAddress[addresses.size()])[0];
        } else {
            //else we are forcedt to use the localhost address.
            return InetAddress.getLocalHost();
        }
    }