[ndnSIM] How can I get the contents ahout PIT.

[John Baugh]

While we're in a similar discussion, what about the contents of the CS?

On Nov 3, 2016 5:50 PM, "Junxiao Shi" <shijunxiao at email.arizona.edu> wrote:

> Hi Runtong
>
> Spyros has given the right way to do it. I'll address why the two snippets
> are wrong.
>
> Ptr<nfd::Pit> pit = node->GetObject<nfd::Pit> ();
>>
> In ns-3 object model
> <https://www.nsnam.org/docs/release/3.25/manual/html/object-model.html>,
> ObjectBase::GetObject can return an object aggregated into the current
> object, or cast the current object as a subclass type. nfd::Pit is not
> aggregated into the node, so this does not work.
> If ndnSIM is designed ground-up following ns-3 principles, nfd::Pit should
> be aggregated. But nfd::Pit is imported from NFD codebase that is not
> designed for ns-3, so that it's not aggregated.
>
> ns3::ndn::L3Protocol, as mentioned in Spyros's answer, is aggregated into
> the node, and serves as an entrypoint to access NFD's objects.
>
> Ptr<nfd::pit::Entry> entry = node->GetObject<nfd::pit::Entry> ();
>>
> ns-3 object model allows only one instance of each object to be
> aggregated. Since each node has multiple Interest Table entries, it's wrong
> to aggregate the entry.
> Similarly, a ns3::NetDevice is not aggregated into a ns3::Node.
>
> Yours, Junxiao
>
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