void
PipelineInterests::handleNack(const Interest& interest, const lp::Nack& nack)
{
if (m_options.isVerbose)
std::cerr << "Received Nack with reason " << nack.getReason()
<< " for Interest " << interest << std::endl;
switch (nack.getReason()) {
case lp::NackReason::DUPLICATE: {
break; // ignore duplicates
}
case lp::NackReason::CONGESTION: { // treated the same as timeout for now
uint64_t segno = interest.getName()[-1].toSegment();
m_segmentInfoMap[segno]->state = inRetxQueue; // update state
handleTimeout(1);
break;
}
default: {
m_hasError = true;
fail("Could not retrieve data for " + interest.getName().toUri() +
", reason: " + boost::lexical_cast<std::string>(nack.getReason()));
break;
}
}
}
void
CertificateFetcherFromNetwork::nackCallback(const lp::Nack& nack,
const shared_ptr<CertificateRequest>& certRequest,
const shared_ptr<ValidationState>& state,
const ValidationContinuation& continueValidation)
{
NDN_LOG_DEBUG_DEPTH("NACK (" << nack.getReason() << ") while fetching certificate "
<< certRequest->interest.getName());
--certRequest->nRetriesLeft;
if (certRequest->nRetriesLeft >= 0) {
m_scheduler.schedule(certRequest->waitAfterNack,
[=] { fetch(certRequest, state, continueValidation); });
certRequest->waitAfterNack *= 2;
}
else {
state->fail({ValidationError::Code::CANNOT_RETRIEVE_CERT, "Cannot fetch certificate after all "
"retries `" + certRequest->interest.getName().toUri() + "`"});
}
}
void
SegmentFetcher::afterNackReceivedCb(const Interest& origInterest, const lp::Nack& nack,
const weak_ptr<SegmentFetcher>& weakSelf)
{
if (shouldStop(weakSelf))
return;
afterSegmentNacked();
BOOST_ASSERT(m_nSegmentsInFlight > 0);
m_nSegmentsInFlight--;
switch (nack.getReason()) {
case lp::NackReason::DUPLICATE:
case lp::NackReason::CONGESTION:
afterNackOrTimeout(origInterest);
break;
default:
signalError(NACK_ERROR, "Nack Error");
break;
}
}
void
AsfStrategy::afterReceiveNack(const Face& inFace, const lp::Nack& nack,
const shared_ptr<pit::Entry>& pitEntry)
{
NFD_LOG_DEBUG("Nack for " << nack.getInterest() << " from=" << inFace.getId() << ": " << nack.getReason());
onTimeout(pitEntry->getName(), inFace.getId());
}