[ndnSIM] How to limit the hop count of interest

[Shuai Dong]

Hi All,

The scenario is:

There are three NDN nodes A, B, C.  A creates an interest packet and
broadcasts to its one-hop neighbors B and C.
If I do not want B and C to relay the interest to their neighbors after
receiving the interest from node A, is there any way that I can achieve
that?

I see there is a "void SetScope(int8_t scope)" in the ns3::ndn::Interest
class. Is it useful to help me achieve this?

Thanks!
Sincerely
Shuai
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