<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">It works!! thank you , Alex!<div><br><div>
<div><div style="color: rgb(34, 34, 34); font-size: small; background-color: rgb(255, 255, 255); font-family: arial; "><font face="'comic sans ms', sans-serif">thanks</font><br><br><font face="garamond, serif"><font size="4">My Regards,</font><br></font></div><hr align="left" color="#b5c4df" size="1" style="color: rgb(34, 34, 34); font-size: small; font-family: arial; width: 210px; min-height: 1px; "><div style="color: rgb(34, 34, 34); font-size: small; background-color: rgb(255, 255, 255); font-family: arial; "><font face="garamond, serif"><div><span style="font-size: 10.5pt; ">Xiaoke Jiang （蒋小可）</span></div><div><span style="font-size: 10.5pt; "><br></span></div><div><span style="font-size: 10.5pt; "><font color="#666666">Ph.D Candidate,</font></span></div><div><span style="font-size: 10.5pt; "><font color="#666666">Dept. of Computer Science and Technology,</font></span></div><div><span style="font-size: 10.5pt; "><font color="#666666">Tsinghua University, P. R. China</font></span></div></font></div></div>
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<br><div><div>On Feb 21, 2013, at 4:35 PM, Alex Afanasyev <<a href="mailto:alexander.afanasyev@ucla.edu">alexander.afanasyev@ucla.edu</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><meta http-equiv="content-type" content="text/html; charset=utf-8"><div dir="auto"><div>In NS-3, Installing applications on a node is not the same as aggregating objects on a node (e.g., installing protocol stacks). As a result, your GetObject call will always return 0 and you get segfault.</div><div><br></div><div>Instead, you should either call node->GetApplication(...) (not really good choice) or save installed apps in ApplicationContainer (Install returns it). There should be examples of that.<br><br>---<div>Alex</div></div><div><br>On Feb 21, 2013, at 12:27 AM, Xiaoke Jiang <<a href="mailto:shock.jiang@gmail.com">shock.jiang@gmail.com</a>> wrote:<br><br></div><blockquote type="cite"><meta http-equiv="Content-Type" content="text/html charset=utf-8"><div style="margin: 0px; font-size: 11px; font-family: Monaco; ">Hi All,</div><div style="margin: 0px; font-size: 11px; font-family: Monaco; "><span class="Apple-tab-span" style="white-space:pre"> </span>I write my script to trace Producer processing Interest,</div><div style="margin: 0px; font-size: 11px; font-family: Monaco; "><br></div><div style="margin: 0px; font-size: 11px; font-family: Monaco; ">xiaoke.cc:</div><div style="margin: 0px; font-size: 11px; font-family: Monaco; "><br></div><div style="margin: 0px; font-size: 11px; font-family: Monaco; "><div style="margin: 0px; color: rgb(0, 97, 65); "><span style="color: #931a68">static</span><span style=""> </span><span style="color: #931a68">void</span><span style=""> SinkIst(</span>Ptr<span style=""><</span><span style="color: #931a68">const</span><span style=""> </span>InterestHeader<span style="">>, </span>Ptr<span style=""><</span>App<span style="">>, </span>Ptr<span style=""><</span>Face<span style="">>)</span></div><div style="margin: 0px; ">{</div><div style="margin: 0px; color: rgb(57, 51, 255); "><span style=""><span class="Apple-tab-span" style="white-space:pre"> </span>NS_LOG_INFO(</span>"< <span style="text-decoration: underline">Respodning</span> with ContentObject"<span style="">);</span></div><div style="margin: 0px; ">}</div><div style="margin: 0px; "><br></div></div><div style="margin: 0px; font-size: 11px; font-family: Monaco; ">…</div><div style="margin: 0px; font-size: 11px; font-family: Monaco; "><br></div><div style="margin: 0px; font-size: 11px; font-family: Monaco; ">producerHelper.Install(node);</div><div style="margin: 0px; font-size: 11px; font-family: Monaco; ">node->GetObject<ns3::ndn::<span style="color: #006141">App</span>>()->TraceConnectWithoutContext(<span style="color: #3933ff">"ReceivedInterests"</span>, MakeCallback(&SinkIst));</div><div style="margin: 0px; font-size: 11px; font-family: Monaco; "><br></div><div style="margin: 0px; font-size: 11px; font-family: Monaco; ">It compiles successfully, but run failed and give me </div><div style="margin: 0px; "><div style="margin: 0px; "><font face="Monaco"><span style="font-size: 11px;">"Command ['/Users/shock/ndnSIM/ns-3/build/shock/xiaoke'] terminated with signal SIGSEGV. Run it under a debugger to get more information (./waf --run <program> --command-template="gdb --args %s <args>")."</span></font></div><div style="font-family: Monaco; font-size: 11px; "><br></div><div style="font-family: Monaco; font-size: 11px; "><br></div><div style="font-family: Monaco; font-size: 11px; ">Anyone can help?</div></div><div style="margin: 0px; font-size: 11px; font-family: Monaco; "><br></div><div>
<div><div style="color: rgb(34, 34, 34); font-size: small; background-color: rgb(255, 255, 255); font-family: arial; "><font face="'comic sans ms', sans-serif">thanks</font><br><br><font face="garamond, serif"><font size="4">My Regards,</font><br></font></div><hr align="left" size="1" style="color: rgb(34, 34, 34); font-size: small; font-family: arial; width: 210px; min-height: 1px; "><div style="color: rgb(34, 34, 34); font-size: small; background-color: rgb(255, 255, 255); font-family: arial; "><font face="garamond, serif"><div><span style="font-size: 10.5pt; ">Xiaoke Jiang （蒋小可）</span></div><div><span style="font-size: 10.5pt; "><br></span></div><div><span style="font-size: 10.5pt; "><font color="#666666">Ph.D Candidate,</font></span></div><div><span style="font-size: 10.5pt; "><font color="#666666">Dept. of Computer Science and Technology,</font></span></div><div><span style="font-size: 10.5pt; "><font color="#666666">Tsinghua University, P. R. China</font></span></div></font></div></div>
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