Packet-level trace helpers
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ndn::L3RateTracer
javascript:void(null)跟踪NDN节点转发的Interest/Data包的以字节为单位的速率和包的数量
以下示例跟踪所有节点:
// the following should be put just before calling Simulator::Run in the scenario
L3RateTracer::InstallAll("rate-trace.txt", Seconds(1.0));
Simulator::Run();
...
输出文件格式是制表符分隔值,第一行指定列的名称。 有关列的说明,请参阅下表:
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L2Tracer
这个跟踪器在本质上类似于ndn :: L3RateTracer,但是它当前只跟踪第2层上的数据包丢弃(例如,由于传输队列溢出)。
// the following should be put just before calling Simulator::Run in the scenario
L2RateTracer::InstallAll("drop-trace.txt", Seconds(0.5));
Simulator::Run();
...
Content store trace helper
NOTE: This tracer works ONLY when the OldContentStore structure is used!
Application-level trace helper
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ndn::AppDelayTracer
通过使用ndn :: AppDelayTracer,可以获得有关发送Interest和接收相应数据包之间的延迟的数据。
// the following should be put just before calling Simulator::Run in the scenario
AppDelayTracer::InstallAll("app-delays-trace.txt");
Simulator::Run();
...