[ndnSIM] How to use ndnSIM helpers to specify custom field in interest packet.

[Prajjwal Singh]

Dear Ygor,
Thank you for this information.
I was trying to tweak my way into using the attribute feature.
Glad it is the correct way.

Regards
Prajjwal Singh

On Fri, Apr 9, 2021 at 3:54 AM Ygor Amaral <ygor.amaral at gmail.com> wrote:

> Prajjwal, it depends on what you need to do.
>
> I think you should create a new ns-3/ndn application (e.g:
> ns3::ndn::CustomConsumerCbr). Since it is the application that will create
> the interest packets.
>
> It is common to use ndn::AppHelper to instantiate applications. If you
> need to pass any value to your new application, no problem, ndn::AppHelper
> supports this (SetAttribute).
>
> Regards,
> Ygor Amaral
>
> On Thu, Apr 8, 2021 at 12:38 AM Prajjwal Singh <csb17053 at tezu.ac.in>
> wrote:
>
>> Thanks Ygor.
>> I have a scenario which uses consumerCbr for consumer nodes.
>> Will I have to write custom scenarios to specify the new interest fields?
>>
>> On Thu, Apr 8, 2021 at 5:27 AM Ygor Amaral <ygor.amaral at gmail.com> wrote:
>>
>>> Hi Prajjwal,
>>>
>>> I do not know if I fully understood your question.
>>>
>>> ndnSIM has no helpers for creating new interest packet fields.
>>>
>>> You need to change the Interest class (ndn-cxx library) to add new
>>> fields.
>>>
>>> Path:
>>>      - ndnSIM/ns-3/src/ndnSIM/ndn-cxx/ndn-cxx/interest.cpp
>>>      - ndnSIM/ns-3/src/ndnSIM/ndn-cxx/ndn-cxx/interest.hpp
>>>
>>> When creating a new interest packet, you will set the value of the new
>>> field, similar to how it is done with the other fields. For example:
>>>
>>> ...
>>> shared_ptr<Interest> interest = make_shared<Interest>();
>>> interest->setOldField(value1);
>>> interest->setNewField(value2);
>>> ...
>>> send(*interest);
>>> ...
>>>
>>> Regards,
>>> Ygor Amaral
>>>
>>> On Tue, Apr 6, 2021 at 3:26 AM Prajjwal Singh <csb17053 at tezu.ac.in>
>>> wrote:
>>>
>>>> Hello all,
>>>> After adding a custom field, say Priority, to the interest packet, how
>>>> can I make use of ndnSIM helpers to specify this Priority field in the
>>>> interest packets, while installing and specifying prefix to consumer nodes
>>>> in the simulating examples?
>>>>
>>>> Thanks in advance,
>>>> Prajjwal Singh
>>>>
>>>> _______________________________________________
>>>> ndnSIM mailing list
>>>> ndnSIM at lists.cs.ucla.edu
>>>> http://www.lists.cs.ucla.edu/mailman/listinfo/ndnsim
>>>>
>>>
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