[ndnSIM] Sending a custom Interest

[Michał Król]

Dear All,

I'm trying to send a new Interest packet from my forwarding strategy 
(for signaling reasons). So after I get an interest for data I forward 
it, and want to generate and broadcast another one to my neighbors.

I tried to modify the code from ndn-app.cpp as that's the only "example" 
I found. However, the interest is not passed to the Forwarder and I'm 
not sure how to do it. The callback "afterSendInterest" is invoked.

I'm wondering if I can use "NullTransport" for that (as it's done for 
ndn-app) or I need a different one?

Is it the right way to implement a signaling protocol in my forwarding 
strategy?

I would be grateful for any advices/comments.


Regards,

Michał Król



//create and add a face

   auto genericLink = make_unique<nfd::face::GenericLinkService>();
   auto transport = make_unique<ns3::ndn::NullTransport>("appFace://", 
"appFace://",
::ndn::nfd::FACE_SCOPE_LOCAL);
   m_face = std::make_shared<Face>(std::move(genericLink), 
std::move(transport));
   m_genericLinkService = 
static_cast<nfd::face::GenericLinkService*>(m_face->getLinkService());
   m_face->setMetric(1);
   m_forwarder.addFace(m_face);


//connect callbacks
   m_genericLinkService->afterReceiveData.connect([this] (Data data) {
                       onData(data);
                         });

   m_genericLinkService->afterSendInterest.connect([this] (Interest 
interest) {
                       afterInterest(interest);
                         });


//send an interest

   shared_ptr<Name> name = make_shared<Name>("/signaling");
   shared_ptr<Interest> interest = make_shared<Interest>();
   interest->setName(*name);

   m_genericLinkService->sendInterest(*interest);