<div dir="ltr"><div>Hi Hafsteinn</div><div><br></div><div>While esp8266ndn used to contain an adaptation of NDN-Lite, it was removed earlier this year.<br></div><div>Current version of esp8266ndn is a <i>port</i> of NDNph, a different C++ library that limits the use of dynamic memory allocations. <br></div><div>See @yoursunny's blog post about this update: <a href="https://yoursunny.com/t/2020/NDNph-intro/" target="_blank">https://yoursunny.com/t/2020/NDNph-intro/</a></div><div>
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<div><div>At the moment NDNph cannot run in ns-3 and NDNph. It may or may not happen in the future, depending on how many people are interested in this feature and whether @yoursunny feels like it.</div><div><br></div><div><br></div>
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</div><div>It is certainly possible to connect a real world network device, including the ESP8266, to ns-3 and ndnSIM.</div><div>This can be achieved with TapBridgeNetDevice: <a href="https://www.nsnam.org/docs/release/3.31/models/html/emulation-overview.html" target="_blank">https://www.nsnam.org/docs/release/3.31/models/html/emulation-overview.html</a></div><div>However, it is difficult to create a reproducible experiment.<br></div><div><br></div><div><br></div><div>A better method to achieve your simulation depends on whether the algorithm is CPU constrained or memory constrained.<br></div><div><br></div><div>For a memory constrained algorithm:</div><div><ol><li>Define the data structures in NDNph. Find out roughly how many records you can fit in the memory of the target device such as ESP8266.</li><li>Implement the algorithms in ndnSIM using ndn-cxx. Limit the table size of each IoT node not to exceed the limit measured in the previous step.<br></li></ol></div><div>For a CPU constrained algorithm:</div><div><ol><li>Implement the key operations (such as crypto) in NDNph. Find out roughly how much time does it take to execute (a thousand times of) each operation.</li><li>Implement the algorithms in ndnSIM using ndn-cxx. Model the CPU time for each operation via the simulation scheduler.<br></li></ol></div><br><div><br></div><div>Finally, it is certainly possible to run this experiment in a real network that consists of ESP8266 devices and physical machines.<br></div><div>That would make a stronger case, but it would take significantly more effort to create a reproducible experiment.<br></div><div><br></div><div>Yours, Junxiao</div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Jul 25, 2020 at 8:20 PM Hafsteinn Hjartarson via ndnSIM <<a href="mailto:ndnsim@lists.cs.ucla.edu" target="_blank">ndnsim@lists.cs.ucla.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hi everyone and thank you for your feedback,<div><br></div><div>To be more precise, I have set up yoursunny's arduino library for NDN on the ESP8266 which can be found here -> <a href="https://github.com/yoursunny/esp8266ndn" target="_blank">https://github.com/yoursunny/esp8266ndn</a></div><div><br></div><div>In the paper "Securing ICN-Based UAV Ad Hoc Networks with Blockchain" by Kai Lei et al. , they propose a framework to mitigate the risk of content poisoning in drones communicating over an NDN network. The framework was tested successfully on a powerful machine running NDNsim.</div><div><br></div><div>What I want to do is to try to use this method to mitigate content poisoning in resource constrained devices such as the ESP8266. In order to test this I must be able to both install NDN on the ESP8266 and connect it to a network where I am able to modify the routers (NFD) myself.</div><div><br></div><div>Is there possibly a better way to do this? Perhaps not using NDNsim at all?</div><div><br></div><div>I hope I am making myself understandable and really appreciate all your help.</div><div><br></div><div>Best regards,</div><div>Hafsteinn</div><div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Jul 25, 2020 at 4:27 PM Lixia Zhang <<a href="mailto:lixia@cs.ucla.edu" target="_blank">lixia@cs.ucla.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br>
> On Jul 23, 2020, at 6:36 AM, Hafsteinn Hjartarson via ndnSIM <<a href="mailto:ndnsim@lists.cs.ucla.edu" target="_blank">ndnsim@lists.cs.ucla.edu</a>> wrote:<br>
> <br>
> Hello,<br>
> <br>
> I am working on a research project related to iot and ndn.<br>
> <br>
> I have set up ndn-lite on two ESP8266 (one acting as a consumer and one as a producer) and I want to connect them to my simulation network running on a virtual machine.<br>
> <br>
> Is this possible?<br>
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one first question: what would you like to achieve from doing this?<br>
<br>
Lixia<br>
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