RFR: JDK-8173180 VirtualMachine.startLocalManagementAgent() returns URI with unreliable IP address

[Ujwal Vangapally]

Thanks for the Review Daniel, Harsha.

Yes with this fix JConsole running on JDK 8 won't be able to connect to 
a process running on higher version of Java containing this change.

I think even Harsha is agreeing this, his point is that the use case 
where a client running on JDK 8 trying to connect to a process running 
on latest releases is rare. As mostly for Local Management both client 
and server will be running on same machine using same JDK for starting 
both client and server .

please correct me if this is not the case.

can we have this fix with interoperability issue between versions ?

Thanks,

Ujwal.



On 6/20/2017 2:40 PM, Daniel Fuchs wrote:
> Hi Harsha,
>
> Maybe I'm missing something.
> How is the local agent started?
>
> If it's started when you connect jconsole to a process
> by specifying the process ID - then I suspect this will
> prevent e.g. jconsole or jvisualvm running on JDK 8 to
> connect to your process.
>
> Can you verify that it's not the case?
>
> best regards,
>
> -- daniel
>
> On 20/06/2017 09:11, Harsha Wardhana B wrote:
>> Hi Daniel,
>>
>> The fix is applicable only to local JMX agent and the most common use 
>> case would be client and server running from same JVM.
>> It is highly unlikely that local JMX agent will be started to cater 
>> for out-of-jvm clients.
>>
>> I don't see how introducing this fix can cause new interoperability 
>> problems. Can you please elaborate?
>>
>> -Harsha
>>
>> On Monday 19 June 2017 10:23 PM, Daniel Fuchs wrote:
>>> Hi,
>>>
>>> If I'm not mistaken then this will make it impossible
>>> for earlier release to interoperate with newer releases
>>> as the LocalRMIClientSocketFactory class will not be
>>> present the client tries to deserialize the stub.
>>>
>>> best regards,
>>>
>>> -- daniel
>>>
>>> On 19/06/2017 11:52, Ujwal Vangapally wrote:
>>>> Hi,
>>>>
>>>> Kindly review the fix for bug below
>>>>
>>>> https://bugs.openjdk.java.net/browse/JDK-8173180
>>>>
>>>> webrev: 
>>>> http://cr.openjdk.java.net/~uvangapally/webrev/2017/8173180/webrev.00/
>>>>
>>>> Thanks,
>>>>
>>>> Ujwal
>>>>
>>>
>>
>