public static synchronized boolean available()

in commons-testing-generic/src/main/java/org/apache/commons/testing/net/AvailableServerPortFinder.java [86:107]

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

    public static synchronized boolean available(final int port) throws IllegalArgumentException {
        if (port < currentMinPort.get() || port > MAX_PORT_NUMBER) {
            throw new IllegalArgumentException("Invalid start currentMinPort: " + port);
        }

        ServerSocket ss = null;
        DatagramSocket ds = null;
        try {
            ss = new ServerSocket(port);
            ss.setReuseAddress(true);
            ds = new DatagramSocket(port);
            ds.setReuseAddress(true);
            return true;
        } catch (final IOException e) {
            // Do nothing
        } finally {
            Closer.closeSilently(ds);
            Closer.closeSilently(ss);
        }

        return false;
    }