[ndnSIM] how to add private member variable in class Intererst

[Spyridon (Spyros) Mastorakis]

Hi,

why you do not use the hopCount of a data packet? This is already provided by ndnSIM.

I guess that you do not encode your hop count as a TLV field for the Interest. You will to modify the wireEncode and wireDecode methods of the Interest class to do that.

Thanks,

Spyridon (Spyros) Mastorakis
Personal Website: http://cs.ucla.edu/~mastorakis/ <http://cs.ucla.edu/~mastorakis/>
Internet Research Laboratory
Computer Science Department
UCLA

> On Mar 27, 2017, at 7:25 PM, gc199211 <gc199211 at mail.ustc.edu.cn> wrote:
> 
>  
> Hi sir :
>      I find  out that my last email is incomplete in maillist, so I  finish it  and send again.  
>      I am  trying to add  hop information in Interest recently on ndnSIM 2.2. Here is my code.
> 1). I add a private member variable  which is named hop in ndnSIM/ndn-cxx/src/interest.h 
>             private:
>                           Name m_name;
>                                       ......
>                          mutable Block m_wire;
>                           int hop;           // a new private member variable                       
>                    
> 2). I increace the value of hop in the nfd::Forwarder::onOutgoingInterest(shared_ptr<pit::Entry> pitEntry, Face& outFace,bool  wantNewNonce),so as to caculate the hop .
>   
>                int tmpHop=interest->getHop();
>                tmpHop++;
>                interest->setHop(tmpHop);                 
>  
> Here is my problem,It seems that the hop value is always 0 no matter how many nodes it is forwarded.How to solve the problem? I know there is a ns3::ndn::FwHopCountTag a to caculate the hop in ns3::ndn::NetDeviceLinkService ,But I want to caculate the hop value directly in Interest. If it works ,I can add other member variable in Interest  which is quite important for my research.Thank you very much .
> 

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