public class RequestUtilsTest {
@Test
public void test(){
RequestUtils utils = new RequestUtils();
Assert.assertEquals(null, utils.filterXForwardedForIP("10.1.6.128,10.1.6.128"));
Assert.assertEquals(null, utils.filterXForwardedForIP("172.16.6.128,172.16.6.128"));
Assert.assertEquals(null, utils.filterXForwardedForIP("172.31.6.128,172.31.6.128"));
Assert.assertEquals(null, utils.filterXForwardedForIP("192.168.0.1,192.168.0.1"));
Assert.assertEquals("172.32.6.128", utils.filterXForwardedForIP("172.32.6.128,172.32.6.128"));
}