public static int findAvailableUdpPort(int minPort) {
        return findAvailableUdpPort(minPort, PORT_RANGE_MAX);
    }
Find an available UDP port randomly selected from the range
[{@code minPort}, {@value #PORT_RANGE_MAX}].
@param minPort the minimum port number
@return an available UDP port number
@throws IllegalStateException if no available port could be found
agent-module/plugins-test-module/testcase/src/main/java/com/navercorp/pinpoint/testcase/util/SocketUtils.java