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<p class="MsoNormal">Hi Spyros. Hi Junxiao.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We solved the issue (thanks to Raj) by encoding the NDNLP packet into a NFD packet in the receiveFromNetDevice method, as follows:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">void<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">NetDeviceTransport::receiveFromNetDevice(<args>){<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> <o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> // Read SINR value from NS-3 packet tag<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> double sinrValue = 0;<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> ns3::SnrTag tag;<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> if(p->PeekPacketTag(tag)){<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> sinrValue = tag.Get();<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> }<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> <o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> Ptr<ns3::Packet> packet = p->Copy();<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> BlockHeader header;<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> packet->RemoveHeader(header);<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> auto nfdPacket = Packet(std::move(header.getBlock()));<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> <o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> // If SINR tag is present, add as a LP tag
<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> ::ndn::lp::Packet lpPacket = ::ndn::lp::Packet(nfdPacket.packet);<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> if (sinrValue){<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> lpPacket.set<lp::SinrTagField>(sinrValue);<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> }<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> else{<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> lpPacket.set<lp::SinrTagField>(0);<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> } <o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> //this->receive(std::move(nfdPacket));<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> this->receive(std::move(Packet(lpPacket.wireEncode())));<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">}<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks for your assistance!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> Spyridon (Spyros) Mastorakis <mastorakis@cs.ucla.edu>
<br>
<b>Sent:</b> Monday, August 13, 2018 4:31 PM<br>
<b>To:</b> Thiago Teixeira <tteixeira@umass.edu><br>
<b>Cc:</b> NdnSIM <ndnSIM@lists.cs.ucla.edu>; Junxiao Shi <shijunxiao@email.arizona.edu>; Rajvardhan Deshmukh <rdeshmukh@umass.edu><br>
<b>Subject:</b> Re: [ndnSIM] SINR packet tag in ndnSIM 2.5<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hi Thiago,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">did you guys also do something like that:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><a href="https://github.com/named-data-ndnSIM/NFD/blob/0a30676920b9d3f2b2c8bc68e583befc415210cc/daemon/face/generic-link-service.cpp#L136">https://github.com/named-data-ndnSIM/NFD/blob/0a30676920b9d3f2b2c8bc68e583befc415210cc/daemon/face/generic-link-service.cpp#L136</a><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Other than that, if the geo-tag works for you, then why not following this logic (do not remember how different or similar it is to the the general way of encoding/decoding NDNLP tags)?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thanks,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Spyridon (Spyros) Mastorakis<br>
Personal Website: <a href="http://cs.ucla.edu/~mastorakis/">http://cs.ucla.edu/~mastorakis/</a><br>
Internet Research Laboratory<br>
Computer Science Department<br>
UCLA<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Aug 13, 2018, at 9:31 AM, Thiago Teixeira <<a href="mailto:tteixeira@umass.edu">tteixeira@umass.edu</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hi all,<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal">I wonder if you had a chance to look into this issue.<span class="apple-converted-space"> </span><o:p></o:p></p>
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<p class="MsoNormal">Recapping, we<o:p></o:p></p>
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<ul style="margin-top:0in" type="disc">
<li class="MsoNormal" style="mso-list:l0 level1 lfo1">created a SINR tag (NS-3) in the<span class="apple-converted-space"> </span><a href="http://wifi-phy.cc/"><span style="color:purple">wifi-phy.cc</span></a><o:p></o:p></li><li class="MsoNormal" style="mso-list:l0 level1 lfo1">created a new TLV and tag (NDNLP) to carry that value<o:p></o:p></li><li class="MsoNormal" style="mso-list:l0 level1 lfo1">modified the encoding according to the<span class="apple-converted-space"> </span><a href="https://lo.calho.st/networks/adding-custom-packet-fields-to-packets-in-ndnsim-2-3-without-forking-the-entire-repository/"><span style="color:purple">post</span></a><span class="apple-converted-space"> </span>Junxiao
shared<o:p></o:p></li><li class="MsoNormal" style="mso-list:l0 level1 lfo1">read the SINR value in the NDN net-device (thus, the NS-3 tag works) and attach the NDNLP tag to the newly created NFD packet<o:p></o:p></li><li class="MsoNormal" style="mso-list:l0 level1 lfo1">read the SINR tag (NDNLP) that is attached to the NFD packet in the forwarding strategy, but the value is zero<o:p></o:p></li></ul>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal">I was looking at the<span class="apple-converted-space"> </span><a href="https://github.com/4th-ndn-hackathon/ndnSIM-Mobile-Simulation-Package/commit/c59de9d958ad0aed7bcb37bdc57a46ebe1752b6f"><span style="color:purple">geo-tag</span></a><span class="apple-converted-space"> </span>from
the 4<sup>th</sup><span class="apple-converted-space"> </span>Hackathon, and that tag survives this encoding/decoding process. Is this a way worth pursuing?<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal">Thanks,<o:p></o:p></p>
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<p class="MsoNormal">TT<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal"><b>From:</b><span class="apple-converted-space"> </span>Thiago Teixeira<span class="apple-converted-space"> </span><br>
<b>Sent:</b><span class="apple-converted-space"> </span>Tuesday, August 7, 2018 7:24 AM<br>
<b>To:</b><span class="apple-converted-space"> </span>NdnSIM <<a href="mailto:ndnSIM@lists.cs.ucla.edu">ndnSIM@lists.cs.ucla.edu</a>><br>
<b>Cc:</b><span class="apple-converted-space"> </span>'Spyridon (Spyros) Mastorakis' <<a href="mailto:mastorakis@cs.ucla.edu">mastorakis@cs.ucla.edu</a>>; Junxiao Shi <<a href="mailto:shijunxiao@email.arizona.edu">shijunxiao@email.arizona.edu</a>><br>
<b>Subject:</b><span class="apple-converted-space"> </span>FW: [ndnSIM] SINR packet tag in ndnSIM 2.5<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal">Just including the mailing list<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal"><b>From:</b><span class="apple-converted-space"> </span>Rajvardhan Deshmukh <<a href="mailto:rdeshmukh@umass.edu"><span style="color:purple">rdeshmukh@umass.edu</span></a>><span class="apple-converted-space"> </span><br>
<b>Sent:</b><span class="apple-converted-space"> </span>Monday, August 6, 2018 4:14 PM<br>
<b>To:</b><span class="apple-converted-space"> </span>Junxiao Shi <<a href="mailto:shijunxiao@email.arizona.edu"><span style="color:purple">shijunxiao@email.arizona.edu</span></a>><br>
<b>Cc:</b><span class="apple-converted-space"> </span>Thiago Teixeira <<a href="mailto:tteixeira@umass.edu"><span style="color:purple">tteixeira@umass.edu</span></a>><br>
<b>Subject:</b><span class="apple-converted-space"> </span>Re: [ndnSIM] SINR packet tag in ndnSIM 2.5<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">Hi Junxiao,</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">The error was solved using your suggestion (using the set method).</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">But when we try to access this tag in the forwarding strategy, we still get null value:</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">Code Snippet #1: (to access tag in forwarding strategy)</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> double sinr = 0.0;<br>
auto sinrTag = interest.getTag<lp::SinrTag>();<br>
if (sinrTag != nullptr) {</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> sinr =*sinrTag;</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> }</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">Output for Snippet #1:</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> sinrTag is nullptr</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">--------------------------------------------------------------</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">Code Snippet #2: (to set tag in<span class="apple-converted-space"> </span><a href="https://github.com/named-data-ndnSIM/ndnSIM/blob/65c490630e1a2e9cdebaf505de8729838c000821/model/ndn-net-device-transport.cpp#L119"><span style="color:purple">ndn-net-device-transport.cpp</span></a>)<br>
<br>
BlockHeader header;<br>
packet->RemoveHeader(header);<br>
auto nfdPacket = Packet(std::move(header.getBlock()));<br>
<br>
::ndn::lp::Packet lpPacket = ::ndn::lp::Packet(nfdPacket.packet);<br>
if (sinrValue) {<br>
lpPacket.set<lp::SinrTagField>(sinrValue);<br>
}<br>
<br>
this->receive(std::move(nfdPacket));<br>
-------------------------------------------------------------</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">Can you help us set the value for SinrTagField in the ndn-net-device-transport.cpp?</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">Thanks,</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">Raj</span><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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