[Nfd-dev] Fetching data that NFD has overheard

[Spyridon (Spyros) Mastorakis]

Hi guys,

I have built a simple app running on top of NFD and I have a small testbed consisting of 3 nodes. Each node runs the app and NFD. The NFD of each node communicate directly with the NFD of the other nodes through a multicast Ethernet face. When the app of a node overhears an Interest for data that could be useful (meaning that NFD will overhear the data transmission soon), the app would like to fetch this data packet once it reaches the local NFD.

The straightforward way would be to add the app's face to the incoming faces of the Interest’s PIT entry, so that NFD forwards the data to the application when it overhears the data transmission. Is there a way to do that (or a way to achieve similar functionality) from the application code without modifying the source code of NFD?

Thank you,
Spyros