[Mini-NDN] Not getting HIT scenario on CS for multiple interests with same name.

[Aman Maldar]

Thanks you Junxiao,
That is correct. Though  I have a really silly question regarding the
correct syntax.
I am trying to override default value for freshness. I spent good amount of
time figuring this out, but no luck.
I am getting search results for ndnSim, but not for mini-ndn.
I made changes in /usr/local/etc/ndn/nfd.conf file

Is this the way I write it? Additionally , how do I set interestLifetime as
well?


*; The tables section configures the CS, PIT, FIB, Strategy Choice, and
Measurements **tables*
*{*
*  ; ContentStore size limit in number of packets*
*  ; default is 65536, about 500MB with 8KB packet size*
*  cs_max_packets 65000*
*  //FreshnessPeriod 10000mS     //WHAT is correct syntax?*
*  //FreshnessPeriod=11000mS*

I am new to mini-ndn. I appreciate your time and help.


On Fri, Nov 24, 2017 at 9:35 AM, Junxiao Shi <shijunxiao at email.arizona.edu>
wrote:

> Hi Aman
>
> I am trying to see if I request 2 interest packets with the same name back
>> to back, the second interest should be satisfied at the requesting node
>> itself.
>>
> Yes, but only if the cached Data satisfies the Interest selectors.
>
>
>> *Steps followed :*
>> > sudo minindn
>> mini-ndn> d ndnpingserver /ndn/d-site/d &
>> mini-ndn> a ndnping /ndn/d-site/d -c1 -n 55555
>>
> ndnpingserver is invoked with default settings: FreshnessPeriod of the
> Data packet is 1000ms.
>
>>
>> *host A get the contents back . with RTT 45ms apprx.*
>> cs::Insert() adds the content to the CS.
>>
> According to screenshot, this occurs at 1511480463.948688.
>
>
>> Now I immediately execute the same request again, keeping sequence number
>> same.
>>  mini-ndn> a ndnpin /ndn/d-site/d -c1 -n 55555
>>
>  ndnping is invoked with default settings: Interest carries MustBeFresh
> selector.
>
> Now I see in Content store log, the cs::Find() does not finds entry in CS.
>> (I believe it should be already there)
>>
> The cached Data has become stale at 1511480464.948688. When processing the
> Interest at 1511480467.711965, the Data does not satisfy the Interest
> because it violates MustBeFresh selector. Hence, the CS rightfully returns
> "no-match".
>
>
>> The packet goes all the way to host D, and again *when data packet is
>> returned to host A, cs::insert() is called on host A*.
>>
>> *Expected outcome*.
>> second interest should be satisfied by cs::Find() at host A itself with
>> very small RTT.
>>
>> Attaching log screenshot.
>>
>> [image: Inline image 1]
>>
> Next time paste the log as text, not screenshot or attachment.
>
>
>>
>> Any idea if I am doing something wrong? Thank you in advance.
>>
>>
> Yours, Junxiao
>



-- 
*Regards,*
*Mr. Maldar Aman M.*
*University of Massachusetts, Lowell*
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