Re: [Pyxida-users] Problem with jpcap

[Ngo C. C. <cuo...@gm...>]

But sometimes there is always the error sendTS > recvTS and the node quit.

Ngo Cao Cuong wrote:
> I think I've fixed it. In ICMPPinger I replace
> pd.sendTS = System.nanoTime() / 1000
> by
> pd.sendTS = System.currentTimeMillis() *1000
> 
> and It worked.
> 
> Thanks.
> Peter Pietzuch wrote:
>> Ngo Cao Cuong wrote:
>>> I haven't found where we can fix it yet but I'll try.
>>> At the moment could you tell me which configuration (of pyxida, jdk, 
>>> jpcap) we can implement stably on PlanetLab?
>> Jon, what was the last version that ran successfully on PlanetLab with pcap?
>>
>> Cheers,
>>   Peter
>>
>>> Peter Pietzuch wrote:
>>>> Ngo Cao Cuong wrote:
>>>>   
>>>>> Thank you for your answer.
>>>>> I installed java 1.6.0_13, I tried jpcap 0.5.1, it did work but
>>>>> everytime the RecvTS is much bigger than SendTS so the latency is very
>>>>> big (like 124535363633), so every node one planetlab update with [0,0,0,0]
>>>>>     
>>>> This is the correct version to use. We are aware of the bug with Java
>>>> 1.6 and the recvTS/sendTS timestamps but haven't fixed it yet. I think
>>>> it has something to do with the fact that the resolution of nanoTime has
>>>> changed in Java 1.6. Can you see if you can fix it?
>>>>
>>>> Cheers,
>>>>   Peter
>>>>
>>>>   
>>>>> Peter Pietzuch wrote:
>>>>>     
>>>>>> Hello,
>>>>>>
>>>>>> Ngo Cao Cuong wrote:
>>>>>>       
>>>>>>> Well finally I solved this problem (because we need to install java 1.6
>>>>>>> instead of 1.5!) but there is always an error with jpcap "exception in
>>>>>>> thread"thread-2" java.lang.nosSuchMethodError: setRoutingOption
>>>>>>> 	at jpcap.JpcapCaptor.nativeOpenLive(Native Method)
>>>>>>> 	at jpcap.JpcapCaptor.openDevice(JpcapCaptor.java:68)
>>>>>>> 	at edu.harvard.syrah.pyxida.ping.JpcapPinger$1.run(JpcapPinger.java:95)
>>>>>>>         
>>>>>> This seems like a version conflict between the Java jpcap library and
>>>>>> the pcap installation on your machine. Can you check the versions?
>>>>>>
>>>>>> Cheers,
>>>>>>   Peter
>>>>>>
>>>>>>       
>>>>>>>> Hello,
>>>>>>>>
>>>>>>>> I've tried to run 0.1.5 but there is always an error:
>>>>>>>> "Exception in thread "main" java.lang.UnsupportedClassVersionError: Bad
>>>>>>>> version number in .class file"
>>>>>>>>
>>>>>>>> I've tried to run 0.1.4 too , it did run but sometimes there is some
>>>>>>>> nodes quit the network with the error of JPcap "RecvTS < SendTS" ???
>>>>>>>> (error on the assert RecvTS > SendTS)
>>>>>>>>
>>>>>>>> Anyone can help me?
>>>>>>>>
>>>>>>>> Thank you,
>>>>>>>> Ngo Cao Cuong
>>>>>>>> INRIA Sophia Antipolis, France.
>>>>>>>>           
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