[ndnSIM] InterestProcessTimeOut in NFD

[Hitesh Wadekar]

That's really great explanation Spyridon. I got a small picture about
sequence :).

Let me think how to incorporate it.

Also, I am still searching or exploring how to use OnTime with interest
name packet approach. I  will update you based on my solution.

Regards,
Hitesh



On Tue, Jun 9, 2015 at 11:17 AM, Spyridon (Spyros) Mastorakis <
spiros.mastorakis at gmail.com> wrote:

> Hi Hitesh,
>
> if this approach works for you, I do not see any reasons not to use it. :)
>
> Let me elaborate on the sequence number a little bit:
>
> the sequence number is just a way to distinguish among the multiple
> segments of a file (i.e., name prefix — at least that is the way I think of
> it). You can keep the sequence number and remove it after the transmission
> using the the getPrefix method of the name class:
>
>
> http://named-data.net/doc/ndn-cxx/current/doxygen/da/d3e/classndn_1_1Name.html#accf5de89558b3bd59a009cb74ceccb4d
>
> We used the sequence number as a way to specify which segment of the file
> has not been retrieved and request again only the specific segment. If you
> are planning to retrieve a single data packet for each name prefix, then
> you do not need a sequence number.
>
> In general, I do not see the sequence number as a limitation or problem,
> as: 1) it can be removed/added any time, 2) the Interest forwarding is
> being performed based on the longest name prefix match principle.
>
> --
> Spyridon (Spyros) Mastorakis
> Personal Website: http://cs.ucla.edu/~mastorakis/
> Internet Research Laboratory
> PhD Computer Science
> UCLA
>
>
>
>
> > On Jun 9, 2015, at 6:37 AM, Hitesh Wadekar <wadekahn at clarkson.edu>
> wrote:
> >
> > Thank you Spyridon.
> >
> > I have gone through all these. However, they are tracking interest based
> on sequence number, same case for OnTimeout as well. In my case, I am not
> generating any sequences, its simple interest to neighbor.
> > Let me explain my thought,
> >
> > I already customized consumer app to simple interest to neighbor without
> any sequences, so I am simple looking an event for OnTimeout where it will
> tell me which interest for it timed out rather than sequence number.
> >
> > For instance, event would be called,
> > OnTimeout(shared_ptr<const Interest> interest);
> >
> > Please correct me if I am wrong or going other direction.
> >
> > Regards,
> > Hitesh
> >
> > On Mon, Jun 8, 2015 at 11:25 AM, Spyridon (Spyros) Mastorakis <
> spiros.mastorakis at gmail.com> wrote:
> > Hi Hitesh,
> >
> > NFD is the NDN Forwarder, that is it operates somewhere between the Link
> and Network layers.
> >
> > As far as the application layer timeouts, you should modify the code of
> the consumer application under the "/apps” directory (or create your own
> consumer application). Specifically, for this purpose, we have the
> OnTimeout method and some other methods to handle the retransmission timer
> (e.g., GetRetxTimer, CheckRetxTimeout, SetRetxTimer):
> >
> >
> http://ndnsim.net/2.0/doxygen/classns3_1_1ndn_1_1Consumer.html#a5f4e5baddcb70c734c3c92e7bb4d6f38
> > https://github.com/NDN-Routing/ndnSIM/blob/master/apps/ndn-consumer.cpp
> >
> > Hope that this helps.
> >
> > --
> > Spyridon (Spyros) Mastorakis
> > Personal Website: http://cs.ucla.edu/~mastorakis/
> > Internet Research Laboratory
> > PhD Computer Science
> > UCLA
> >
> >
> >
> >
> > > On Jun 8, 2015, at 8:02 AM, Hitesh Wadekar <wadekahn at clarkson.edu>
> wrote:
> > >
> > > Hello Guys,
> > >
> > > Do we have a function in NFD at app level such as InterestTimeOut()?
> like if I send an interest and if we didn't get any response of that
> interest then we should get a notification (event) InterestTimeOut.
> > >
> > > I could see a function in NDN face, (ndn-cxx/face.hpp)
> > >
> > >   const PendingInterestId*
> > >   expressInterest(const Interest& interest,
> > >                   const OnData& onData, const OnTimeout& onTimeout =
> OnTimeout());
> > >
> > > But don't know how to use it or call NDF app level
> > >
> > > Thanks for the input.
> > >
> > > Thanks,
> > > Hitesh
> >
> >
>
>
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