[ndnSIM] Manually change face state

[Muhammad Hosain Abdollahi Sabet]

Spyridon,

I have a couple of questions on this that I will be grateful if you could
help me with:

In transport.hpp there is a setState, but it hasn't been called in face.hpp
at all. What is the reason?

With this lead of yours I'm trying to extend linkControlHelper to actually
fail a link by setting its state to FAILED or CLOSED. Is there a specific
reason it hasn't been done already?


Thanks,
Sabet

On Thu, Mar 9, 2017 at 1:08 AM, Spyridon (Spyros) Mastorakis <
mastorakis at cs.ucla.edu> wrote:

> Hi,
>
> each application has a corresponding face, so you could extend your
> application logic to set the state of its face to the local forwarder to
> DOWN.
>
> You will also have to modify NFD to be able to set the state of a Face
> based on its transport instance, similar to this getState method (create a
> setState method):
>
> https://github.com/named-data-ndnSIM/NFD/blob/
> 38111cde9bab698f6eaf1a9d430130c2cbb3eca4/daemon/face/face.hpp#L289
>
> There is an enumeration for the state of a Face transport available here:
>
> https://github.com/named-data-ndnSIM/NFD/blob/
> 38111cde9bab698f6eaf1a9d430130c2cbb3eca4/daemon/face/transport.hpp#L41
>
> Hope that this helps,
>
> Spyridon (Spyros) Mastorakis
> Personal Website: http://cs.ucla.edu/~mastorakis/
> Internet Research Laboratory
> Computer Science Department
> UCLA
>
> On Mar 7, 2017, at 5:29 PM, Γιαννης Μανωλοπουλος <j.manolopoulos at gmail.com>
> wrote:
>
> Hello,
>
> I am trying to model link failure between a router and a particular
> consumer. The consumer has issued an interest, but the link fails while
> awaiting for the data packet. I tried using LinkControlHelper, but it only
> sets the error rate of the channel to maximum and won't change consumer
> application's face state to DOWN. So, when the data packet arrives at the
> router, as far as the forwarder/strategy is concerned, it is forwarded
> correctly to the consumer and the pit entry gets deleted eventually,
> whereas I want to maintain it for the duration of InterestLifetime or at
> least until the link is up again (for experimental purposes).
>
> So I was wondering if there is a way to schedule for this particular face
> to change its state to DOWN at a given time, and then change it back to UP
> when the link is up again.
>
> Thanks!
>
>
>
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>
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