[ndnSIM] Adding another "Name" type of field in Interest packet

[Mudasir Qazi]

Thank you all of you :)

On Sun, May 27, 2018, 12:27 AM Mudasir Qazi <mudasirqazi00 at gmail.com> wrote:

> Thank you so much for your effort. I'm surly looking into it. :)
>
> On Sun, May 27, 2018, 12:23 AM Spyridon (Spyros) Mastorakis <
> mastorakis at cs.ucla.edu> wrote:
>
>> Junxiao,
>>
>> there are 2 different things: design and simulation code.
>>
>> We have built the simulator as a tool for the community to experiment
>> with NDN, and we should make their life easier instead of more complicated.
>> Therefore, in my humble opinion, it is fine if someone wants to reduce the
>> coding complexity (not all the users are equally comfortable with software
>> development), and create a more “hacky” implementation to make things work
>> and do some preliminary evaluation. ndnSIM is a research tool, and serves
>> the purpose of enabling people to experiment fast with different design
>> alternatives.
>>
>> @Mudasir, I have implemented some wire encoding/decoding for a more
>> complex data structure than the vector of names that you need. Please take
>> a look here:
>>
>>
>> https://github.com/kchou1/scenario-ntorrent/commit/750e92e9813c4022b95ba19995a4d517c9ec381c
>>
>> Look for the EncodeContent and DecodeIBFAndComputeRearestPiece methods.
>>
>> Thanks,
>>
>> Spyridon (Spyros) Mastorakis
>> Personal Website: http://cs.ucla.edu/~mastorakis/
>> Internet Research Laboratory
>> Computer Science Department
>> UCLA
>>
>> > On May 26, 2018, at 11:56 AM, Junxiao Shi <shijunxiao at email.arizona.edu>
>> wrote:
>> >
>> > Hi Mudasir
>> >
>> > I have tried adding another "Name" type of field in Interest packet.
>> > What's the semantics of this new field?
>> > It's usually a wrong design if you need a secondary name.
>> >
>> > * To guide forwarding: use ForwardingHint field.
>> > * To give additional parameters to the producer: append those
>> parameters to the name. In case producer must return a Data generated by
>> some other node, encapsulate that Data into a new Data that matches the
>> Interest.
>> > * To indicate who expressed the Interest: you shouldn't indicate who
>> expressed the Interest, unless it changes the Data. In that case, see the
>> second point.
>> >
>> >
>> > in wireDecode method:
>> > m_Name2.wireDecode(m_wire.get(tlv::Name2));
>> >
>> > Error:
>> > When I'm running scenario, its builds successfully. But after linking
>> files and before launching the simulator it gives following error:
>> >
>> > terminate called after throwing an instance of
>> 'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<ndn::Block::Error>
>> >'
>> >   what():  (Block::get) Requested a non-existed type [10] from Block
>> >
>> > This error message indicates Nonce element (TLV-TYPE 0x0A ie decimal
>> 10) is missing.
>> >
>> > Yours, Junxiao
>>
>>
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