[ndnSIM] can't get Nack when congestion

Alex Afanasyev alexander.afanasyev at ucla.edu
Sun Mar 10 12:15:03 PDT 2013

Hi Xiaoke,

Thank you very much for your commit!

I have merged it with some minor corrections.  For the later fixes, you can create a new branch (e.g., git checkout -b issue-27 origin/issue-27-hop-count-fix).  You can also put "Issue #27" at the beginning of the commit message, this way github will associate commit to the issue.

Regarding to you other question.  I'm not entirely sure what is your concern.  The available forwarding strategies in ndnSIM do not ask routers to do "retransmission" (as Lixia mentioned in another email, routers can merely "retry" if "asked" by NACK or new interest from the consumer).  The whole responsibility to retransmit (in case something was lost) is solely end-client (consumer app) responsibility.   Did I misunderstand your question?

Thanks again,

On Mar 10, 2013, at 5:18 AM, Xiaoke Jiang <shock.jiang at gmail.com> wrote:

> Hi Alex,
> 	First, I have fix the hop count = -1 (test passed), maybe we can merge this first. I have sent you a pull request on GitHub. I am also try to design two tags.
> P,S,  Is there any way to make the Forward Strategy works like IP?  Because I want to compare NDN with IP, no retransmission on the middle node, I mean the Nack/timeout leads to rechoose another path and leave all the retransmission work to end nodes. And of course, only one path is selected for one prefix.
> thanks
> My Regards,
> Xiaoke Jiang (蒋小可)
> Ph.D Candidate,
> Dept. of Computer Science and Technology,
> Tsinghua University, P. R. China

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