[ndnSIM] access stored content in cache from forward.cpp

[Spyridon Mastorakis]

Include an if statement and filter packets based on their prefix. If you find a packet with a name that starts with “/localhost”, you can safely ignore it.

This method might be useful: https://github.com/named-data/ndn-cxx/blob/master/ndn-cxx/name.hpp#L553

Thanks,

Spyridon (Spyros) Mastorakis
Assistant Professor
Computer Science Department
University of Nebraska, Omaha
Peter Kiewit Institute Room 175A
https://sites.google.com/site/spyridonmastorakis

On Dec 1, 2019, at 6:49 PM, Zeinab Rezaiefar <zeinab.rezaiefar at gmail.com<mailto:zeinab.rezaiefar at gmail.com>> wrote:

Thank you so much Prof. Spyros for your email. However, I need to calculate some metrics for just data messages which are requested by users and saved in the cache ( I do not want to consider to consider data packet generated by NFD) . How I can access it? is there any field that can distinguish these data from each other?
Thanks
Best regards
Zeinab

On Sat, Nov 30, 2019 at 10:56 AM Spyridon Mastorakis <smastorakis at unomaha.edu<mailto:smastorakis at unomaha.edu>> wrote:
Off the top of my head, I do not see anything (much) wrong with what you did. What you got is indeed the name of a data packet generated by NFD for management purposes.

Thanks,

Spyridon (Spyros) Mastorakis
Assistant Professor
Computer Science Department
University of Nebraska, Omaha
Peter Kiewit Institute Room 175A
https://sites.google.com/site/spyridonmastorakis<https://urldefense.proofpoint.com/v2/url?u=https-3A__sites.google.com_site_spyridonmastorakis&d=DwMFaQ&c=Cu5g146wZdoqVuKpTNsYHeFX_rg6kWhlkLF8Eft-wwo&r=eI5Bh74ovG-uIXQ5ksQETSPgRFzmJXjIZXneCqw580E&m=ZVqHtcX5V2jleLUOVSCWpnr7bRu6AHAcDS4pY2pek2Q&s=YbLI2mhQk1ub0Lqq7ySNqy2FZKVz03oU7e_zfVeJqx8&e=>

On Nov 28, 2019, at 11:57 PM, Zeinab Rezaiefar via ndnSIM <ndnsim at lists.cs.ucla.edu<mailto:ndnsim at lists.cs.ucla.edu>> wrote:

Dear Junxiao,
Thanks for your reply. However, may I know how to just get the name of data that the is requested by consumers.
Thanks
Best regards

On Thu, Nov 28, 2019 at 8:18 PM Junxiao Shi <shijunxiao at email.arizona.edu<mailto:shijunxiao at email.arizona.edu>> wrote:
Hi Zeinab

/localhost/nfd/faces/events/%FE%02 is indeed a Data packet stored in the CS.
It’s created by face management
https://redmine.named-data.net/projects/nfd/wiki/FaceMgmt#Face-Status-Change-Notification<https://urldefense.proofpoint.com/v2/url?u=https-3A__redmine.named-2Ddata.net_projects_nfd_wiki_FaceMgmt-23Face-2DStatus-2DChange-2DNotification&d=DwMFaQ&c=Cu5g146wZdoqVuKpTNsYHeFX_rg6kWhlkLF8Eft-wwo&r=eI5Bh74ovG-uIXQ5ksQETSPgRFzmJXjIZXneCqw580E&m=iVeUKIYBbctEMozc-bO8JiTPCteuxVPGB1pQR1kWfWA&s=FXy50ke1ii8ZcC6hK-NevVaWQWkfHCJ1ShlECPtFes4&e=>

Yours, Junxiao

On Thu, Nov 28, 2019 at 00:39 Zeinab Rezaiefar via ndnSIM <ndnsim at lists.cs.ucla.edu<mailto:ndnsim at lists.cs.ucla.edu>> wrote:
Hello,
I would like to get name of content that are stored in the cache in forward.cpp so I wrote the below lines:
for(ns3::Ptr<ns3::ndn::cs::Entry> csentry= m_csFromNdnSim->Begin(); csentry!= m_csFromNdnSim->End(); csentry=m_csFromNdnSim->Next(csentry))
{
std::cout<<"the name"<<csentry->GetName()<<"is stored in  node with id"<<node->GetId()<<"\n";

}

However, I notice this not only gives prefix that stored but also gives some event such as :
the name/localhost/nfd/faces/events/%FE%02is stored in node with id3

what is the reason. how I can just access just the name of contents that are stored.
I will appreciate any help
best regards
Zeinab
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