[ndnSIM] How to get cache hit/miss ratio in a variable?

[adithya srinivasan]

Hi
Yes I'm creating my own custom producer application. But I'm not able to
figure out how exclusion works. Can you atleast give a simple description
like example? Assume that a consumer requests "/node8" , puts it in an
interest and sends it. A producer replies back with "/node8/user". Now upon
receiving this data , the consumer wants to exclude the "user" postfix and
search for another "/node8". So he adds "/user" as an exclude filter and
requests again? Is this how exclusion works?

On Tue, Feb 17, 2015 at 7:44 AM, Spyridon (Spyros) Mastorakis <
spiros.mastorakis at gmail.com> wrote:

> Hello,
>
> based on my understanding of the scenario that you want to create, you do
> not need to worry about the minsuffixcomponent and maxsuffixcomponent
> selectors. However, you will need to create your own custom producer
> application (or modify the existing one) to handle the exclude selectors
> appropriately.
>
> --
> Spyridon (Spyros) Mastorakis
> Personal Website: http://cs.ucla.edu/~mastorakis/
> Internet Research Laboratory
> PhD Computer Science
> UCLA
>
>
>
>
> > On Feb 16, 2015, at 7:17 AM, adithya srinivasan <adith.ad at gmail.com>
> wrote:
> >
> > Hello
> > Thank you for your reply. However i wasn't able to find a way to specify
> the minsuffixcomponents and maxsuffixcomponents. And also , can you provide
> me with an example of an application that uses exclude filters where the
> packets are excluded while the program is running.A very simple example
> will suffice. What I tried so far is , create a prefix , say , "/node8" and
> add origins to that prefix to a node8 in the network. And then i added
> "user" as an exclude filter using the excludeOne() function. The
> onInterest() of node8 appends "user" to the dataname of the packet.So the
> name of the packet from producer becomes "/node8/user". Now as far as my
> understanding goes , this packet must be ignored since there is a match for
> the exclude filter. But the packet is being forwarded to the consumer.Can
> you point out where I am going wrong?
> >
> > P.S I also tried changing the source prefix as "/node8/user" and the
> consumer's interest prefix as "/node8" without any exclude filters. However
> there was no packet being transmitted. By longest prefix match , there
> should be a transmission of data packet from node 8 , shouldn't it be?
> > Thank you
> > Adithya
> >
> > On Sun, Feb 15, 2015 at 11:53 PM, Spyridon (Spyros) Mastorakis <
> spiros.mastorakis at gmail.com> wrote:
> > Hello,
> >
> > please use the “reply to all” option, so that your emails are visible to
> all the users of ndnSIM.
> >
> > Exclude is a selector and refers only to a name prefix. You can take a
> look here for further information:
> >
> > http://named-data.net/doc/ndn-tlv/interest.html#selectors
> >
> > However, the FreshnessPeriod field of a data packet may be useful to you:
> >
> > http://named-data.net/doc/ndn-tlv/data.html#freshnessperiod
> >
> > Remember that if you want to use this field, the consumer has to request
> fresh data explicitly. This can be done with the MustBeFresh selector:
> >
> > http://named-data.net/doc/ndn-tlv/interest.html#mustbefresh
> >
> > --
> > Spyridon (Spyros) Mastorakis
> > Personal Website: http://cs.ucla.edu/~mastorakis/
> > Internet Research Laboratory
> > PhD Computer Science
> > UCLA
> >
> >
> >
> >
> > > On Feb 15, 2015, at 4:44 AM, adithya srinivasan <adith.ad at gmail.com>
> wrote:
> > >
> > > Hi
> > > Thank you for your reply. Actually i thought initially that we can
> exclude a packet directly by specifying just the name of the packet. But i
> looked into the ndn-exclude files and found that exclusions can be made for
> the prefixes alone.Isn't that so? What I needed was the number of
> exclusions made by various users for a data packet in the Content Store of
> a router so that I can determine whether that packet is an important one or
> not.Suppose a user adds "/node0" as an exclusion in the interest , I want
> the number of exlcusions for "/node0" in the router's CS to be incremented
> by 1. I still don't know how to achieve this. Sorry I'm kind of a noob in
> this. Is there a way to get this?
> > >
> > > Thank you
> > > Adithya
> > >
> > > On Sun, Feb 15, 2015 at 11:49 AM, Spyridon (Spyros) Mastorakis <
> spiros.mastorakis at gmail.com> wrote:
> > > Hello,
> > >
> > > in order to get the cache hit/miss ratio in the desired format, you
> will need either to modify the implementation of the CS directly or the
> implementation of the cs tracer in order to return the desired parameter.
> > >
> > > For the other thing about the exclusions, Alex asked you to define
> more precisely the term “number of exclusions”. I would like to ask the
> same thing in order to really understand your question and be able to
> answer it.
> > >
> > > --
> > > Spyridon (Spyros) Mastorakis
> > > Personal Website: http://cs.ucla.edu/~mastorakis/
> > > Internet Research Laboratory
> > > PhD Computer Science
> > > UCLA
> > >
> > >
> > >
> > >
> > > > On Feb 13, 2015, at 11:08 PM, adithya srinivasan <adith.ad at gmail.com>
> wrote:
> > > >
> > > > Hello
> > > > My project involves a basic level security algorithm against cache
> poisoning and pollution in NDN. For that I'm in need of the cache hit/miss
> ratio and also the exclusions made for a packet in the Content Store of a
> node. I've seen programs where the cache hit/miss ratio can be traced using
> tracers. But is there any way to obtain the cache hit/miss ratio of a node
> at any point of time inside a variable. I can use custom apps to create an
> instance for a node and is it possible to get the cache hit/miss ratio in
> that app?
> > > >
> > > > Thank you
> > > > Adithya
> > > > _______________________________________________
> > > > ndnSIM mailing list
> > > > ndnSIM at lists.cs.ucla.edu
> > > > http://www.lists.cs.ucla.edu/mailman/listinfo/ndnsim
> > >
> > >
> >
> >
>
>
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