Hi Michael,
I have done some search with google, there is an introduction says when
sending a socket bound with INADDR_ANY, it will be sent to the default
IP address (default address is the one has the lowest-numbered interface).
I guess most Unix like OS should support the ping command, I also
already tested the ping on Linux and AIX, they are working fine. I can
test zos when I get a machine.
Thanks a lot!
On 04/23/2012 05:56 PM, Michael McMahon wrote:
Deven,
The change looks benign enough, but my only concern is that not all
operating systems appear to support pinging 0.0.0.0. What is the official
position on 0.0.0.0 as a destination address?
- Michael.
On 23/04/12 06:57, Deven You wrote:
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
--
Best Regards,
Deven
