[ndnSIM] modification of 'OnInterest' in 'Producer' side

Alex Afanasyev alexander.afanasyev at ucla.edu
Fri Jun 21 13:11:57 PDT 2013

Hi Amin,

You just add lines after line 122 in ndn-producer.cc with your custom settings to the created DATA packet. Like this:

 header->SetName (Create<Name> (interest->GetName ()));
 header->SetFreshness (m_freshness);
 header->SetSignature (1);

If you want "signature" parameter to be configured in scenario, e.g., in this way:

  ndn::AppHelper producerHelper ("ns3::ndn::Producer");
  producerHelper.SetPrefix ("/prefix");  
  producerHelper.SetAttribute ("PayloadSize", StringValue("1024"));
  producerHelper.SetAttribute ("Signature", StringValue("1"));

Then you would also need to make a couple of extra changes:

in ndn-producer.h
add new private variable

uint32_t m_signature;

in ndn-producer.cc in GetTypeId method (between line 66 and 67): 

   .AddAttribute ("Signature", "Fake signature",
                       UintegerValue (0),

And then on line 123, do something like:

 header->SetSignature (m_signature);


On Jun 21, 2013, at 7:01 AM, Amin Karami <amin at ac.upc.edu> wrote:

> Hi,
> I am going to modify some fields in 'OnInterest' in side of the 'Producer'. e.g., signature of a specific content or freshness field of a specific content. I read this page to get more idea http://ndnsim.net/doxygen/ndn-producer_8cc_source.html
> But i could not understand how is it possible to implement in our scenarios?
> I appreciate in advance for any guidance in implementation
> Amin
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