[ndnSIM] How to use hijacker in ndnSIM?

[Alex Afanasyev]

Hi Chengyu,

You would need to modify wscript file to include hijacker.cc in your scenario.   You can checkout an example in examples/wscript for "ndn-simple-with-custom-app".

At the same time, I would encourage you and everybody else against writing scenarios by modifying ndnSIM or NS-3.  My personal recommendation is to use a modular way, using for example the template https://github.com/cawka/ndnSIM-scenario-template.   If you simply copy hijacker.cc to extensions folder and copy your modified version of ndn-tree-app-delay-trace (alongside with topology files), it should compile and work.

Let us know if you still in trouble with hijacker (either with or without modular way).

---
Alex


On Feb 25, 2013, at 11:14 PM, Chengyu Fan <chengyu at cs.colostate.edu> wrote:

>> Hi~
>> 
>> I want to use the custom app "hijacker" in ndnSIM, so I modify the code of ndn-tree-app-delay-tracer.cc.
>> 
>> Basically I replace codes:
>>   ndn::AppHelper producerHelper ("ns3::ndn::Producer");
>>   producerHelper.SetAttribute ("PayloadSize", StringValue("1024"));  
>> 
>> using: 
>>   ndn::AppHelper producerHelper ("Hijacker");
>> 
>> 
>> However, when I run ndn-tree-app-delay-trace, it prompts the error messages:
>> 
>> assert failed. cond="uid != 0", msg="Assert in TypeId::LookupByName: Hijacker not found", file=../src/core/model/type-id.cc, line=419
>> terminate called without an active exception
>> 
>> Command ['/home/chengyu/ndnSIM/ns-3/build/src/ndnSIM/examples/ns3-dev-ndn-tree-app-delay-tracer-debug', '100'] terminated with signal SIGIOT. Run it under a debugger to get more information (./waf --run <program> --command-template="gdb --args %s <args>").
>> 
>> Does anybody know what the problem is?
>> 
>> Thanks,
>> Chengyu
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