ptr_lib::shared_ptr<DataBlock>
FrameBuffer::acquireData(const ndn::Interest& interest, ndn::Name& nalType )
{
lock_guard<recursive_mutex> scopedLock(syncMutex_);
ptr_lib::shared_ptr<DataBlock> data;
std::map<ndn::Name, ptr_lib::shared_ptr<DataBlock> >::reverse_iterator re_iter;
//iter = activeSlots_.find(interest.getName());
ndn::Name name;
for( re_iter = activeSlots_.rbegin(); re_iter != activeSlots_.rend(); ++re_iter )
{
name = re_iter->first;
if( interest.getName().equals(name.getPrefix(interest.getName().size())))
{
nalType = name.getSubName(-2);
break;
}
}
if (re_iter!=activeSlots_.rend()) //if found
{
data = re_iter->second;
//cout << "********** size:" << segBlock->size() << " &data=" << (void*)(segBlock->dataPtr()) << endl;
}
return data;
}
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();
}
}
void
respondToAnyInterest(const ndn::Interest& interest)
{
auto data = std::make_shared<ndn::Data>(interest.getName());
m_keyChain.sign(*data);
m_faceProducer.put(*data);
}
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
onData( ndn::Face &face,
const ndn::Interest& interest,
ndn::Data& data,
int globalReference,
int localReference,
int patternId,
boost::posix_time::ptime sentTime )
{
double roundTripTime;
int receivedContentLength;
std::string receivedContent;
std::string logLine;
logLine = "";
logLine += "Data Received - PatternType="+toString(patternId+1);
logLine += ", GlobalID="+toString(globalReference);
logLine += ", LocalID="+toString(localReference);
logLine += ", Name="+interest.getName().toUri();
boost::posix_time::time_duration roundTripDuration;
totalInterestReceived_++;
trafficPattern_[patternId].totalInterestReceived++;
if (trafficPattern_[patternId].expectedContent != "")
{
receivedContent = (char*)(data.getContent().value());
receivedContentLength = data.getContent().value_size();
receivedContent = receivedContent.substr(0, receivedContentLength);
if (receivedContent != trafficPattern_[patternId].expectedContent)
{
contentInconsistencies_++;
trafficPattern_[patternId].contentInconsistencies++;
logLine += ", IsConsistent=No";
}
else
logLine += ", IsConsistent=Yes";
}
else
logLine += ", IsConsistent=NotChecked";
m_logger.log(logLine, true, false);
roundTripDuration = boost::posix_time::microsec_clock::local_time() - sentTime;
roundTripTime = roundTripDuration.total_microseconds()/1000.0;
if (minimumInterestRoundTripTime_ > roundTripTime)
minimumInterestRoundTripTime_ = roundTripTime;
if (maximumInterestRoundTripTime_ < roundTripTime)
maximumInterestRoundTripTime_ = roundTripTime;
if (trafficPattern_[patternId].minimumInterestRoundTripTime > roundTripTime)
trafficPattern_[patternId].minimumInterestRoundTripTime = roundTripTime;
if (trafficPattern_[patternId].maximumInterestRoundTripTime < roundTripTime)
trafficPattern_[patternId].maximumInterestRoundTripTime = roundTripTime;
totalInterestRoundTripTime_ += roundTripTime;
trafficPattern_[patternId].totalInterestRoundTripTime += roundTripTime;
if (totalInterestSent_ == interestCount_)
signalHandler();
}
void
PrefixUpdateProcessor::sendNack(const ndn::Interest& request)
{
ndn::MetaInfo metaInfo;
metaInfo.setType(ndn::tlv::ContentType_Nack);
shared_ptr<ndn::Data> responseData = std::make_shared<ndn::Data>(request.getName());
responseData->setMetaInfo(metaInfo);
m_keyChain.sign(*responseData);
m_face.put(*responseData);
}
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
onInterest(const ndn::Name& name, const ndn::Interest& interest)
{
ndn::Name interestName(interest.getName());
if(DEBUG)
std::cout << "received interest: " << interest.getName() << std::endl;
//run scripts if requested by server
ndn::Name cmpName(getFilter()+SCRIPT_SUFFIX);
int num_components = cmpName.size();
if(cmpName.isPrefixOf(interestName))
{
int numberOfComponents = interestName.size();
for(int i = num_components; i < numberOfComponents; ++i)
{
m_scriptsList.push_front(interestName[i].toUri());
}
runScripts(interestName);
}
else
{
int numberOfComponents = interestName.size();
if(!m_remoteLinks.empty())
{
std::cerr << "remote links list is not empty - check for a missing reports!!" << std::endl;
m_remoteLinks.clear();
}
for(int i = name.size(); i < numberOfComponents; ++i)
{
m_remoteLinks.insert(interestName[i].toUri());
}
// ask for local status
fetchFaceStatusInformation(interestName);
}
}
void
onTimeout( ndn::Face &face,
const ndn::Interest& interest,
int globalReference,
int localReference,
int patternId)
{
std::string logLine;
logLine = "";
logLine += "Interest Timed Out - PatternType="+toString(patternId+1);
logLine += ", GlobalID="+toString(globalReference);
logLine += ", LocalID="+toString(localReference);
logLine += ", Name="+interest.getName().toUri();
m_logger.log(logLine, true, false);
if (totalInterestSent_ == interestCount_)
signalHandler();
}
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()));
}
}
}
virtual void
onInterest(const ndn::InterestFilter& filter, const ndn::Interest& interest)
{
int dollarfound=0;
int hashfound=0;
printf("This doesn't work");
std::cout << "Checking if this works " << interest.getName().size() << std::endl;
int comp_size=interest.getName().size();
string last_comp=interest.getName().get(comp_size-1).toUri();
string check=UriDecode(last_comp);
cout<<check<<endl;
cout<<"Last component is "<<last_comp<<endl;
std::size_t found = check.find("#");
if (found!=std::string::npos)
{
hashfound=1;
}
found = check.find("$");
if (found!=std::string::npos)
{
dollarfound=1;
}
printf("DollarFound:%d and HashFound:%d\n",dollarfound,hashfound);
std::cout << "Received Interest " << interest << std::endl;
//Creating the file name
std::shared_ptr<ndn::Data> response(std::make_shared<ndn::Data>(interest.getName()));
if(dollarfound==1)
{
int i=0;
string filename;
for(i=0;i<comp_size-1;i++)
{
string mid=interest.getName().get(i).toUri();
string checking=UriDecode(mid);
filename = filename + '_' +mid;
}
char node_name[node_size];
gethostname(node_name,node_size);
string node_n=string(node_name);
node_n.append("-");
node_n=node_n + filename;
cout<<node_n<<endl;
// char data[1000];
FILE *fp1=fopen(node_n.c_str(),"r+");
fseek(fp1, 0L, SEEK_END);
int number_of_segments=0;
int size= ftell(fp1);
if(size%MAX_SEG!=0)
{
number_of_segments=(size/MAX_SEG)+1;
}
else
{
number_of_segments=(size/MAX_SEG);
}
string data1=to_string(number_of_segments);
// string data2='$'+data1;
printf("Number of Segments is =%d\n",number_of_segments);
response->setContent(reinterpret_cast<const uint8_t*>(data1.c_str()),
data1.size());
fclose(fp1);
}
if(hashfound==1){
int i=0;
string filename;
for(i=0;i<comp_size-2;i++)
{
string mid=interest.getName().get(i).toUri();
string checking=UriDecode(mid);
filename = filename + '_' +mid;
}
char node_name[node_size];
gethostname(node_name,node_size);
string node_n=string(node_name);
node_n.append("-");
node_n=node_n + filename;
cout<<node_n<<endl;
char data[1000];
// char data[32];
FILE *fp1=fopen(node_n.c_str(),"r+");
fseek(fp1, 0L, SEEK_END);
// int number_of_segments=0;
//int size= ftell(fp1);
int start=0;
start=stoi(check.substr(1))*MAX_SEG;
fseek(fp1,start,SEEK_SET);
memset(&data,0,sizeof(data));
size_t check=fread(data,MAX_SEG,1,fp1);
if(check==0)
printf("Error\n");
// printf("Data: %s\n",data);
string msg=string(data);
response->setContent(reinterpret_cast<const uint8_t*>(data),
MAX_SEG);
// printf("Size of the outgoing message is:%d",msg.size());
cout<<msg.c_str()<<endl;
}
m_keyChain.sign(*response);
m_face.put(*response);
}
bool
EdgeStrategy::filterOutgoingInterest
( const nfd::Face& face,
ndn::Interest& interest,
ns3::Time& delay )
{
auto in_face = getFaceTable().get( interest.getIncomingFaceId() );
bool coming_from_network = !in_face->isEdge();
bool going_to_network = !face.isEdge();
// if the interest coming from and going to
// the same network then we don't need to do
// anything special
if( coming_from_network == going_to_network )
{
return RouterStrategy::filterOutgoingInterest
( face, interest, delay );
}
// if the interest is leaving the network then just change
// current network
if( coming_from_network )
{
BOOST_ASSERT( interest.getCurrentNetwork()
== ndn::RouteTracker::INTERNET_NETWORK );
tracers::edge->interest_left( interest );
interest.setCurrentNetwork( ndn::RouteTracker::EXIT_NETWORK );
return RouterStrategy::filterOutgoingInterest
( face, interest, delay );
}
// if the interest is entering the network then
// we need to do some extra stuff
BOOST_ASSERT( interest.getCurrentNetwork()
== ndn::RouteTracker::ENTRY_NETWORK );
tracers::edge->interest_entered( interest );
interest.setCurrentNetwork( ndn::RouteTracker::INTERNET_NETWORK );
// if the interest doesn't have an auth tag, or its auth level
// is 0 then we don't do any authentication
if( !interest.hasAuthTag()
|| interest.getAuthTag().getAccessLevel() == 0 )
{
return RouterStrategy::filterOutgoingInterest( face,
interest,
delay );
}
const ndn::AuthTag& auth = interest.getAuthTag();
// if the auth tag provided by the interest is expired
// then we can drop the interest
if( auth.isExpired() )
{
tracers::edge->blocked_interest
( interest, tracers::BlockedExpired );
onInterestDropped( interest, face, "Expired auth" );
return false;
}
// if the interest and auth tag have different prefixes
// then we drop the interest
if( !auth.getPrefix().isPrefixOf( interest.getName() ) )
{
tracers::edge->blocked_interest
( interest, tracers::BlockedBadPrefix );
onInterestDropped( interest, face, "Mismatched prefix" );
return false;
}
// if the interest route hash doesn't match its auth tag
// then we can drop it
if( interest.getEntryRoute() != auth.getRouteHash() )
{
tracers::edge->blocked_interest
( interest, tracers::BlockedBadRoute );
onInterestDropped( interest, face, "Bad route" );
return false;
}
// if the interest auth is in the positive auth cache then
// we set its auth validity probability
tracers::edge->bloom_lookup( auth, s_edge_bloom_delay );
delay += s_edge_bloom_delay;
if( m_positive_cache.contains( auth ) )
{
double fpp = m_positive_cache.getEffectiveFPP();
double prob = (double)1.0 - fpp;
uint32_t iprob = prob*0xFFFFFFFF;
interest.setAuthValidityProb( iprob );
}
else
{
// if it's in the negative cache then we validate
// its signature manually
tracers::edge->bloom_lookup( auth, s_edge_bloom_delay );
delay += s_edge_bloom_delay;
if( m_negative_cache.contains( auth ) )
{
// we simulate verification delay by incrementing
// the processing delay
tracers::edge->sigverif( auth, s_edge_signature_delay );
delay += EdgeStrategy::s_edge_signature_delay;
if( auth.getSignature().getValue().value_size() > 0
&& auth.getSignature().getValue().value()[0] != 0 )
{
// if signature is valid then set auth validity
// and put auth into positive cache
interest.setAuthValidityProb( 0xFFFFFFFF );
tracers::edge->auth_cached
( auth, tracers::CachedPositiveMoved );
m_positive_cache.insert( auth );
}
else
{
// otherwise we drop the interest
onInterestDropped( interest, face, "negative cache, manual validation failed" );
return false;
}
}
else
{
// if the auth isn't in either cache then
// we set validity probability to 0
interest.setAuthValidityProb( 0 );
}
}
return RouterStrategy::filterOutgoingInterest( face, interest,
delay );
}
void
onData(const ndn::Interest& interest, ndn::Data& data, std::string linkPrefix)
{
std::cout << "Data received for: " << interest.getName() << std::endl;
CollectorData reply;
reply.wireDecode(data.getContent().blockFromValue());
if(reply.m_statusList.empty())
{
std::cerr << "received data is empty!!" << std::endl;
}
// get the list of the remote links requested for this prefix
std::unordered_map<std::string,std::list<ndn::NdnMapServer::linkPair>>::const_iterator got = m_linksList.find(linkPrefix);
if(got == m_linksList.end())
{
std::cerr << "failed to recognize the prefix: " << linkPrefix << std::endl;
}
else
{
std::list<ndn::NdnMapServer::linkPair> prefixList = got->second;
for (unsigned i=0; i< reply.m_statusList.size(); i++)
{
int LinkId = 0;
std::cout << "Reply: " << reply.m_statusList.at(i);
// get the link id of the current IP
for (auto pair = prefixList.cbegin(); pair != prefixList.cend(); ++pair)
{
if((*pair).linkIp == reply.m_statusList[i].getLinkIp())
{
if (DEBUG)
std::cout << " Link ID for " << linkPrefix << " and " << reply.m_statusList[i].getLinkIp() << " is " << (*pair).linkId << std::endl;
LinkId = (*pair).linkId;
}
}
std::string cmdStr("http://");
cmdStr += m_mapServerAddr;
cmdStr += "/bw/";
cmdStr += std::to_string(LinkId);
cmdStr += "/" + reply.m_statusList[i].getTimestamp() + "/";
cmdStr += std::to_string(reply.m_statusList[i].getTx() * 8) + "/";
cmdStr += std::to_string(reply.m_statusList[i].getRx() * 8);
if (DEBUG)
std::cout << "cmd to pass to curl: " << cmdStr << std::endl;
int status;
// check for zombies
waitpid(-1, &status, WNOHANG);
int pid;
if ((pid = fork()) < 0)
printf("for failed for curl %s\n", cmdStr.c_str());
else
{
if (pid == 0)
execl("/usr/bin/curl","curl", "-s", "-L", cmdStr.c_str(), NULL);
}
// check for zombies again
waitpid(-1, &status, WNOHANG);
}
reply.m_statusList.clear();
}
}
void
onTimeout(const ndn::Interest& interest)
{
std::cout << "onTimeout: " << interest.getName() << std::endl;
}
void my_routing::on_timeout( uint32_t error_code, const ndn::Interest& interest)
{
std::cout << "Request timed out (ErrorCode: " << error_code << "): " << interest.getName().toUri() << std::endl;
m_has_error = true;
}