<net-dev> Java_java_net_Inet6AddressImpl_isReachable0 is returning false for InetAdress 0.0.0.0

[Deven You]

On 04/09/2012 03:57 PM, Deven You wrote:
> Hi net-devs,
>
> There is a test case [1] can reproduce this problem. Please use root 
> privilege to run this test case(create raw socket need root privilege).
>
> Test results:
>
> sudo ~/jdks/oracle/jdk1.7.0_03/bin/java Javanet
> The target ip is 0.0.0.0
> the target is reachable: false
> Test failed
> Exception in thread "main" java.lang.Exception: address 0.0.0.0 can 
> not be reachable!
>     at Javanet.main(Javanet.java:40)
>
> The root cause is that ping4 method in Inet4AddressImpl.c does a check 
> of sending and receiving address.
> (him->sin_addr.s_addr == sa_recv.sin_addr.s_addr)
>
> This is not true for InetAddress 0.0.0.0. We can using ping command on 
> Linux to confirm it:
>
> ping 0.0.0.0
> ING 0.0.0.0 (127.0.0.1) 56(84) bytes of data.
> 64 bytes from 127.0.0.1: icmp_req=1 ttl=64 time=0.024 ms
> 64 bytes from 127.0.0.1: icmp_req=2 ttl=64 time=0.025 ms
>
> So for 0.0.0.0, we can remove the (him->sin_addr.s_addr == 
> sa_recv.sin_addr.s_addr).
>
> I have made a patch[1] to solve this issue.
>
> Thanks a lot!
>
> [1] http://cr.openjdk.java.net/~youdwei/inet4adr/webrev.00/ 
> <http://cr.openjdk.java.net/%7Eyoudwei/inet4adr/webrev.00/>
> -- 
> Best Regards,
>
> Deven
Hi All,

Is there anyone could review this patch, thanks a lot!

-- 
Best Regards,

Deven

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