Question

I have this function to get the HostAddress from my request (HttpServletRequest) on Java. But using Jetty 7.x and my IP is ipV6 I have always this error with iPv6 address.

My function:

xxxx.getIP(request, false);

public static String getIP(HttpServletRequest request, boolean proxy) {
    String ip = "";
    log.debug("X-getHeaderNames ["+ request.getHeaderNames()+"]");
    if (proxy) {
        ip = XFordwardedInetAddressUtil.getAddressFromRequest(request);
    } else {
        String _ip = request.getRemoteAddr();
        ip = InetAddresses.forString(_ip).getHostAddress();
    }
    return ip;
}

The error:

DEBUG: org.encuestame.core.exception.EnMeMappingExceptionResolver – Resolving exception from handler [org.encuestame.mvc.controller.TweetPollController@4fc23996]: java.lang.IllegalArgumentException: ‘0:0:0:0:0:0:0:1%0’ is not an IP string literal.
java.lang.IllegalArgumentException: ‘0:0:0:0:0:0:0:1%0’ is not an IP string literal.
at org.encuestame.utils.net.InetAddresses.forString(InetAddresses.java:59)
at org.encuestame.core.util.EnMeUtils.getIP(EnMeUtils.java:210)
at org.encuestame.mvc.controller.AbstractBaseOperations.getIpClient(AbstractBaseOperations.java:262)
at org.encuestame.mvc.controller.TweetPollController.detailTweetPollController(TweetPollController.java:332)
at org.encuestame.mvc.controller.TweetPollController$$FastClassByCGLIB$$6990b004.invoke()
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:191)
at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedIntercepto

I know the iPv6 localhost format should be ‘0:0:0:0:0:0:0:1’ but my request always return this string ‘0:0:0:0:0:0:0:1%0’

Anyone can help me?

Answer 1

The problem is that the class you’re using (org.encuestame.utils.net.InetAddresses) clearly doesn’t support IPv6. Try using the java InetAddress class that Joachim mentioned in his answer.