Ejemplo n.º 1
0
shared_ptr<Entry>
Measurements::get(const fib::Entry& fibEntry)
{
    shared_ptr<name_tree::Entry> nte = m_nameTree.get(fibEntry);
    if (nte == nullptr) {
        // must be Fib::s_emptyEntry that is unattched
        BOOST_ASSERT(fibEntry.getPrefix().empty());
        nte = m_nameTree.lookup(fibEntry.getPrefix());
    }

    BOOST_ASSERT(nte != nullptr);
    return this->get(*nte);
}
Ejemplo n.º 2
0
void
ProbingModule::scheduleProbe(const fib::Entry& fibEntry, const time::milliseconds& interval)
{
  Name prefix = fibEntry.getPrefix();

  // Set the probing flag for the namespace to true after passed interval of time
  scheduler::schedule(interval, [this, prefix] {
    NamespaceInfo* info = m_measurements.getNamespaceInfo(prefix);

    if (info == nullptr) {
      // fib::Entry with the passed prefix has been removed or the fib::Entry has
      // a name that is not controlled by the AsfStrategy
      return;
    }
    else {
      info->setIsProbingDue(true);
    }
  });
}
Ejemplo n.º 3
0
void
AsfStrategy::forwardInterest(const Interest& interest,
                             const fib::Entry& fibEntry,
                             const shared_ptr<pit::Entry>& pitEntry,
                             Face& outFace,
                             bool wantNewNonce)
{
  if (wantNewNonce) {
    //Send probe: interest with new Nonce
    Interest probeInterest(interest);
    probeInterest.refreshNonce();
    NFD_LOG_TRACE("Sending probe for " << probeInterest << probeInterest.getNonce()
                                       << " to FaceId: " << outFace.getId());
    this->sendInterest(pitEntry, outFace, probeInterest);
  }
  else {
    this->sendInterest(pitEntry, outFace, interest);
  }

  FaceInfo& faceInfo = m_measurements.getOrCreateFaceInfo(fibEntry, interest, outFace);

  // Refresh measurements since Face is being used for forwarding
  NamespaceInfo& namespaceInfo = m_measurements.getOrCreateNamespaceInfo(fibEntry, interest);
  namespaceInfo.extendFaceInfoLifetime(faceInfo, outFace);

  if (!faceInfo.isTimeoutScheduled()) {
    // Estimate and schedule timeout
    RttEstimator::Duration timeout = faceInfo.computeRto();

    NFD_LOG_TRACE("Scheduling timeout for " << fibEntry.getPrefix()
                                            << " FaceId: " << outFace.getId()
                                            << " in " << time::duration_cast<time::milliseconds>(timeout) << " ms");

    scheduler::EventId id = scheduler::schedule(timeout,
        bind(&AsfStrategy::onTimeout, this, interest.getName(), outFace.getId()));

    faceInfo.setTimeoutEvent(id, interest.getName());
  }
}