// After we create a new Face, we need to set it up for use. This
// function sets the controlling strategy, registers prefixes in
// sync, broadcast, and LSA.
void
HelloProtocol::onRegistrationSuccess(const ndn::nfd::ControlParameters& commandSuccessResult,
const ndn::Name& neighbor,const ndn::time::milliseconds& timeout)
{
Adjacent *adjacent = m_nlsr.getAdjacencyList().findAdjacent(neighbor);
if (adjacent != 0) {
adjacent->setFaceId(commandSuccessResult.getFaceId());
ndn::Name broadcastKeyPrefix = DEFAULT_BROADCAST_PREFIX;
broadcastKeyPrefix.append("KEYS");
std::string faceUri = adjacent->getConnectingFaceUri();
double linkCost = adjacent->getLinkCost();
m_nlsr.getFib().registerPrefix(m_nlsr.getConfParameter().getChronosyncPrefix(),
faceUri, linkCost, timeout,
ndn::nfd::ROUTE_FLAG_CAPTURE, 0);
m_nlsr.getFib().registerPrefix(m_nlsr.getConfParameter().getLsaPrefix(),
faceUri, linkCost, timeout,
ndn::nfd::ROUTE_FLAG_CAPTURE, 0);
m_nlsr.getFib().registerPrefix(broadcastKeyPrefix,
faceUri, linkCost, timeout,
ndn::nfd::ROUTE_FLAG_CAPTURE, 0);
// Sends a Hello Interest to determine status before the next scheduled.
/* interest name: /<neighbor>/NLSR/INFO/<router> */
ndn::Name interestName(neighbor);
interestName.append(NLSR_COMPONENT);
interestName.append(INFO_COMPONENT);
interestName.append(m_nlsr.getConfParameter().getRouterPrefix().wireEncode());
expressInterest(interestName,
m_nlsr.getConfParameter().getInterestResendTime());
}
}
void
HelloProtocol::onRegistrationSuccess(const ndn::nfd::ControlParameters& commandSuccessResult,
const ndn::Name& neighbor)
{
Adjacent *adjacent = m_nlsr.getAdjacencyList().findAdjacent(neighbor);
if (adjacent != 0) {
adjacent->setFaceId(commandSuccessResult.getFaceId());
/* interest name: /<neighbor>/NLSR/INFO/<router> */
ndn::Name interestName(neighbor);
interestName.append(NLSR_COMPONENT);
interestName.append(INFO_COMPONENT);
interestName.append(m_nlsr.getConfParameter().getRouterPrefix().wireEncode());
expressInterest(interestName,
m_nlsr.getConfParameter().getInterestResendTime());
}
}
void
HelloProtocol::onRegistrationFailure(const ndn::nfd::ControlResponse& response,
const ndn::Name& name)
{
_LOG_DEBUG(response.getText() << " (code: " << response.getCode() << ")");
/*
* If NLSR can not create face for given faceUri then it will treat this
* failure as one INFO interest timed out. So that NLSR can move on with
* building Adj Lsa and calculate routing table. NLSR does not build Adj
* Lsa unless all the neighbors are ACTIVE or DEAD. For considering the
* missconfigured(link) neighbour dead this is required.
*/
Adjacent *adjacent = m_nlsr.getAdjacencyList().findAdjacent(name);
if (adjacent != 0) {
adjacent->setInterestTimedOutNo(adjacent->getInterestTimedOutNo() + 1);
Adjacent::Status status = adjacent->getStatus();
uint32_t infoIntTimedOutCount = adjacent->getInterestTimedOutNo();
if (infoIntTimedOutCount == m_nlsr.getConfParameter().getInterestRetryNumber()) {
if (status == Adjacent::STATUS_ACTIVE) {
adjacent->setStatus(Adjacent::STATUS_INACTIVE);
}
m_nlsr.getLsdb().scheduleAdjLsaBuild();
}
}
}
void
HelloProtocol::processInterest(const ndn::Name& name,
const ndn::Interest& interest)
{
/* interest name: /<neighbor>/NLSR/INFO/<router> */
const ndn::Name interestName = interest.getName();
_LOG_DEBUG("Interest Received for Name: " << interestName);
if (interestName.get(-2).toUri() != INFO_COMPONENT) {
return;
}
ndn::Name neighbor;
neighbor.wireDecode(interestName.get(-1).blockFromValue());
_LOG_DEBUG("Neighbor: " << neighbor);
if (m_nlsr.getAdjacencyList().isNeighbor(neighbor)) {
ndn::shared_ptr<ndn::Data> data = ndn::make_shared<ndn::Data>();
data->setName(ndn::Name(interest.getName()).appendVersion());
data->setFreshnessPeriod(ndn::time::seconds(10)); // 10 sec
data->setContent(reinterpret_cast<const uint8_t*>(INFO_COMPONENT.c_str()),
INFO_COMPONENT.size());
m_nlsr.getKeyChain().sign(*data, m_nlsr.getDefaultCertName());
_LOG_DEBUG("Sending out data for name: " << interest.getName());
m_nlsr.getNlsrFace().put(*data);
Adjacent *adjacent = m_nlsr.getAdjacencyList().findAdjacent(neighbor);
// If this neighbor was previously inactive, send our own hello interest, too
if (adjacent->getStatus() == Adjacent::STATUS_INACTIVE) {
// We can only do that if the neighbor currently has a face.
if(adjacent->getFaceId() != 0){
/* interest name: /<neighbor>/NLSR/INFO/<router> */
ndn::Name interestName(neighbor);
interestName.append(NLSR_COMPONENT);
interestName.append(INFO_COMPONENT);
interestName.append(m_nlsr.getConfParameter().getRouterPrefix().wireEncode());
expressInterest(interestName,
m_nlsr.getConfParameter().getInterestResendTime());
}
// If the originator of the Interest currently lacks a Face, we
// need to give it one.
else {
registerPrefixes(adjacent->getName(), adjacent->getConnectingFaceUri(),
adjacent->getLinkCost(), ndn::time::milliseconds::max());
}
}
}
}
void
HelloProtocol::processInterest(const ndn::Name& name,
const ndn::Interest& interest)
{
/* interest name: /<neighbor>/NLSR/INFO/<router> */
const ndn::Name interestName = interest.getName();
_LOG_DEBUG("Interest Received for Name: " << interestName);
if (interestName.get(-2).toUri() != INFO_COMPONENT) {
return;
}
ndn::Name neighbor;
neighbor.wireDecode(interestName.get(-1).blockFromValue());
_LOG_DEBUG("Neighbor: " << neighbor);
if (m_nlsr.getAdjacencyList().isNeighbor(neighbor)) {
ndn::shared_ptr<ndn::Data> data = ndn::make_shared<ndn::Data>();
data->setName(ndn::Name(interest.getName()).appendVersion());
data->setFreshnessPeriod(ndn::time::seconds(10)); // 10 sec
data->setContent(reinterpret_cast<const uint8_t*>(INFO_COMPONENT.c_str()),
INFO_COMPONENT.size());
m_nlsr.getKeyChain().sign(*data, m_nlsr.getDefaultCertName());
_LOG_DEBUG("Sending out data for name: " << interest.getName());
m_nlsr.getNlsrFace().put(*data);
Adjacent *adjacent = m_nlsr.getAdjacencyList().findAdjacent(neighbor);
if (adjacent->getStatus() == 0) {
if(adjacent->getFaceId() != 0){
/* interest name: /<neighbor>/NLSR/INFO/<router> */
ndn::Name interestName(neighbor);
interestName.append(NLSR_COMPONENT);
interestName.append(INFO_COMPONENT);
interestName.append(m_nlsr.getConfParameter().getRouterPrefix().wireEncode());
expressInterest(interestName,
m_nlsr.getConfParameter().getInterestResendTime());
}
else {
registerPrefixes(adjacent->getName(), adjacent->getConnectingFaceUri(),
adjacent->getLinkCost(), ndn::time::milliseconds::max());
}
}
}
}
