void
HelloProtocol::sendScheduledInterest(uint32_t seconds)
{
std::list<Adjacent> adjList = m_nlsr.getAdjacencyList().getAdjList();
for (std::list<Adjacent>::iterator it = adjList.begin(); it != adjList.end();
++it) {
// If this adjacency has a Face, just proceed as usual.
if((*it).getFaceId() != 0) {
/* interest name: /<neighbor>/NLSR/INFO/<router> */
ndn::Name interestName = (*it).getName() ;
interestName.append(NLSR_COMPONENT);
interestName.append(INFO_COMPONENT);
interestName.append(m_nlsr.getConfParameter().getRouterPrefix().wireEncode());
expressInterest(interestName,
m_nlsr.getConfParameter().getInterestResendTime());
}
// If it does not have a Face, we need to give it one. A
// successful registration prompts a callback that sends the hello
// Interest to the new Face.
else {
registerPrefixes((*it).getName(), (*it).getConnectingFaceUri(),
(*it).getLinkCost(), ndn::time::milliseconds::max());
}
}
scheduleInterest(m_nlsr.getConfParameter().getInfoInterestInterval());
}
// 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::processInterestTimedOut(const ndn::Interest& interest)
{
/* interest name: /<neighbor>/NLSR/INFO/<router> */
const ndn::Name interestName(interest.getName());
_LOG_DEBUG("Interest timed out for Name: " << interestName);
if (interestName.get(-2).toUri() != INFO_COMPONENT) {
return;
}
ndn::Name neighbor = interestName.getPrefix(-3);
_LOG_DEBUG("Neighbor: " << neighbor);
m_nlsr.getAdjacencyList().incrementTimedOutInterestCount(neighbor);
Adjacent::Status status = m_nlsr.getAdjacencyList().getStatusOfNeighbor(neighbor);
uint32_t infoIntTimedOutCount =
m_nlsr.getAdjacencyList().getTimedOutInterestCount(neighbor);
_LOG_DEBUG("Status: " << status);
_LOG_DEBUG("Info Interest Timed out: " << infoIntTimedOutCount);
if ((infoIntTimedOutCount < m_nlsr.getConfParameter().getInterestRetryNumber())) {
/* 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 if ((status == Adjacent::STATUS_ACTIVE) &&
(infoIntTimedOutCount == m_nlsr.getConfParameter().getInterestRetryNumber())) {
m_nlsr.getAdjacencyList().setStatusOfNeighbor(neighbor, Adjacent::STATUS_INACTIVE);
m_nlsr.getLsdb().scheduleAdjLsaBuild();
}
}
const PendingInterestId*
Face::expressInterest(const Name& name,
const Interest& tmpl,
const OnData& onData, const OnTimeout& onTimeout/* = OnTimeout()*/)
{
return expressInterest(Interest(tmpl)
.setName(name)
.setNonce(0),
onData, onTimeout);
}
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::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());
}
}
}
}
void
HelloProtocol::processInterestTimedOut(const ndn::Interest& interest)
{
/* interest name: /<neighbor>/NLSR/INFO/<router> */
const ndn::Name interestName(interest.getName());
_LOG_DEBUG("Interest timed out for Name: " << interestName);
if (interestName.get(-2).toUri() != INFO_COMPONENT) {
return;
}
ndn::Name neighbor = interestName.getPrefix(-3);
_LOG_DEBUG("Neighbor: " << neighbor);
m_nlsr.getAdjacencyList().incrementTimedOutInterestCount(neighbor);
int status = m_nlsr.getAdjacencyList().getStatusOfNeighbor(neighbor);
uint32_t infoIntTimedOutCount =
m_nlsr.getAdjacencyList().getTimedOutInterestCount(neighbor);
_LOG_DEBUG("Status: " << status);
_LOG_DEBUG("Info Interest Timed out: " << infoIntTimedOutCount);
if ((infoIntTimedOutCount < m_nlsr.getConfParameter().getInterestRetryNumber())) {
/* 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 if ((status == 1) &&
(infoIntTimedOutCount == m_nlsr.getConfParameter().getInterestRetryNumber())) {
m_nlsr.getAdjacencyList().setStatusOfNeighbor(neighbor, 0);
m_nlsr.incrementAdjBuildCount();
if (m_nlsr.getIsBuildAdjLsaSheduled() == false) {
_LOG_DEBUG("Scheduling scheduledAdjLsaBuild");
m_nlsr.setIsBuildAdjLsaSheduled(true);
// event here
m_nlsr.getScheduler().scheduleEvent(ndn::time::seconds(5),
ndn::bind(&Lsdb::scheduledAdjLsaBuild,
&m_nlsr.getLsdb()));
}
}
}
void
HelloProtocol::sendScheduledInterest(uint32_t seconds)
{
std::list<Adjacent> adjList = m_nlsr.getAdjacencyList().getAdjList();
for (std::list<Adjacent>::iterator it = adjList.begin(); it != adjList.end();
++it) {
if((*it).getFaceId() != 0) {
/* interest name: /<neighbor>/NLSR/INFO/<router> */
ndn::Name interestName = (*it).getName() ;
interestName.append(NLSR_COMPONENT);
interestName.append(INFO_COMPONENT);
interestName.append(m_nlsr.getConfParameter().getRouterPrefix().wireEncode());
expressInterest(interestName,
m_nlsr.getConfParameter().getInterestResendTime());
}
else {
registerPrefixes((*it).getName(), (*it).getConnectingFaceUri(),
(*it).getLinkCost(), ndn::time::milliseconds::max());
}
}
scheduleInterest(m_nlsr.getConfParameter().getInfoInterestInterval());
}
/**
* Encode name as an Interest, using a default interest lifetime.
* Send the interest through the transport, read the entire response and call onData(interest, data).
* @param name A reference to a Name for the interest. This copies the Name.
* @param onData A function object to call when a matching data packet is received. This copies the function object, so you may need to
* use func_lib::ref() as appropriate.
* @param onTimeout A function object to call if the interest times out. If onTimeout is an empty OnTimeout(), this does not use it.
* This copies the function object, so you may need to use func_lib::ref() as appropriate.
* @param wireFormat A WireFormat object used to encode the message. If omitted, use WireFormat getDefaultWireFormat().
* @return The pending interest ID which can be used with removePendingInterest.
*/
uint64_t
expressInterest
(const Name& name, const OnData& onData, const OnTimeout& onTimeout = OnTimeout())
{
return expressInterest(name, 0, onData, onTimeout);
}
void
Node::nfdRegisterPrefix
(uint64_t registeredPrefixId, const ptr_lib::shared_ptr<const Name>& prefix,
const OnInterestCallback& onInterest, const OnRegisterFailed& onRegisterFailed,
const ForwardingFlags& flags, KeyChain& commandKeyChain,
const Name& commandCertificateName, WireFormat& wireFormat, Face* face)
{
if (!&commandKeyChain)
throw runtime_error
("registerPrefix: The command KeyChain has not been set. You must call setCommandSigningInfo.");
if (commandCertificateName.size() == 0)
throw runtime_error
("registerPrefix: The command certificate name has not been set. You must call setCommandSigningInfo.");
ControlParameters controlParameters;
controlParameters.setName(*prefix);
controlParameters.setForwardingFlags(flags);
ptr_lib::shared_ptr<Interest> commandInterest(new Interest());
if (isLocal()) {
commandInterest->setName(Name("/localhost/nfd/rib/register"));
// The interest is answered by the local host, so set a short timeout.
commandInterest->setInterestLifetimeMilliseconds(2000.0);
}
else {
commandInterest->setName(Name("/localhop/nfd/rib/register"));
// The host is remote, so set a longer timeout.
commandInterest->setInterestLifetimeMilliseconds(4000.0);
}
// NFD only accepts TlvWireFormat packets.
commandInterest->getName().append
(controlParameters.wireEncode(*TlvWireFormat::get()));
makeCommandInterest
(*commandInterest, commandKeyChain, commandCertificateName,
*TlvWireFormat::get());
if (registeredPrefixId != 0) {
uint64_t interestFilterId = 0;
if (onInterest) {
// registerPrefix was called with the "combined" form that includes the
// callback, so add an InterestFilterEntry.
interestFilterId = getNextEntryId();
setInterestFilter
(interestFilterId, ptr_lib::make_shared<const InterestFilter>(*prefix),
onInterest, face);
}
registeredPrefixTable_.push_back
(ptr_lib::shared_ptr<RegisteredPrefix>(new RegisteredPrefix
(registeredPrefixId, prefix, interestFilterId)));
}
// Send the registration interest.
RegisterResponse response
(ptr_lib::shared_ptr<RegisterResponse::Info>(new RegisterResponse::Info
(this, prefix, onInterest, onRegisterFailed, flags, wireFormat, face)));
// It is OK for func_lib::function make a copy of the function object because
// the Info is in a ptr_lib::shared_ptr.
expressInterest
(getNextEntryId(), commandInterest, response, response, wireFormat, face);
}