+ List<List<PcapPacket>> firstListOffSign = offSignature.get(0);
+ List<List<PcapPacket>> lastListOffSign = offSignature.get(offSignature.size()-1);
+ // Load OFF signature first and last packet's timestamps
+ for (List<PcapPacket> list : firstListOffSign) {
+ // Get timestamp Instant from the last packet
+ firstSignatureTimestamps.add(list.get(0).getTimestamp());
+ }
+ for (List<PcapPacket> list : lastListOffSign) {
+ // Get timestamp Instant from the last packet
+ int lastPacketIndex = list.size()-1;
+ lastSignatureTimestamps.add(list.get(lastPacketIndex).getTimestamp());
+ }
+ // Sort the timestamps
+ firstSignatureTimestamps.sort((p1, p2) -> {
+ return p1.compareTo(p2);
+ });
+ // Sort the timestamps
+ lastSignatureTimestamps.sort((p1, p2) -> {
+ return p1.compareTo(p2);
+ });
+
+ Iterator<Instant> iterFirst = firstSignatureTimestamps.iterator();
+ Iterator<Instant> iterLast = lastSignatureTimestamps.iterator();
+ System.out.println("First to Last Packet:");
+ while (iterFirst.hasNext() && iterLast.hasNext()) {
+ Instant firstInst = (Instant) iterFirst.next();
+ Instant lastInst = (Instant) iterLast.next();
+ Duration dur = Duration.between(firstInst, lastInst);
+ long duration = dur.toMillis();
+ // Check duration --- should be below 15 seconds
+ if (duration >= 0 && duration <= 15000) {
+ System.out.println(dur.toMillis());
+ } else if (duration > 15000) {
+ while (duration > 15000) { // that means we have to move to the next trigger
+ firstInst = (Instant) iterFirst.next();
+ dur = Duration.between(firstInst, lastInst);
+ duration = dur.toMillis();
+ }
+ System.out.println(dur.toMillis());
+ } else { // below 0 / negative --- that means we have to move to the next signature
+ while (duration < 0) { // that means we have to move to the next trigger
+ lastInst = (Instant) iterLast.next();
+ dur = Duration.between(firstInst, lastInst);
+ duration = dur.toMillis();
+ }
+ System.out.println(dur.toMillis());
+ }
+ if (duration > 8000) {
+ break;
+ }
+ }
+
+ // TODO: The above part is just for 15-second time sensitivity experiment
+ // TODO: The above part is just for 15-second time sensitivity experiment
+ // TODO: The above part is just for 15-second time sensitivity experiment
+
+
+
+
+// TriggerTimesFileReader ttfr = new TriggerTimesFileReader();
+// List<Instant> triggerTimes = ttfr.readTriggerTimes(triggerTimesFile, false);
+// // Tag each trigger with "ON" or "OFF", assuming that the first trigger is an "ON" and that they alternate.
+// List<UserAction> userActions = new ArrayList<>();
+// for (int i = 0; i < triggerTimes.size(); i++) {
+// userActions.add(new UserAction(i % 2 == 0 ? Type.TOGGLE_ON : Type.TOGGLE_OFF, triggerTimes.get(i)));
+// }
+// TriggerTrafficExtractor tte = new TriggerTrafficExtractor(inputPcapFile, triggerTimes, deviceIp);
+// final PcapDumper outputter = Pcaps.openDead(DataLinkType.EN10MB, 65536).dumpOpen(outputPcapFile);
+// DnsMap dnsMap = new DnsMap();
+// TcpReassembler tcpReassembler = new TcpReassembler();
+// TrafficLabeler trafficLabeler = new TrafficLabeler(userActions);
+// tte.performExtraction(pkt -> {
+// try {
+// outputter.dump(pkt);
+// } catch (NotOpenException e) {
+// e.printStackTrace();
+// }
+// }, dnsMap, tcpReassembler, trafficLabeler);
+// outputter.flush();
+// outputter.close();
+//
+// if (tte.getPacketsIncludedCount() != trafficLabeler.getTotalPacketCount()) {
+// // Sanity/debug check
+// throw new AssertionError(String.format("mismatch between packet count in %s and %s",
+// TriggerTrafficExtractor.class.getSimpleName(), TrafficLabeler.class.getSimpleName()));
+// }
+//
+// // Extract all conversations present in the filtered trace.
+// List<Conversation> allConversations = tcpReassembler.getTcpConversations();
+// // Group conversations by hostname.
+// Map<String, List<Conversation>> convsByHostname = TcpConversationUtils.groupConversationsByHostname(allConversations, dnsMap);
+// System.out.println("Grouped conversations by hostname.");
+// // For each hostname, count the frequencies of packet lengths exchanged with that hostname.
+// final Map<String, Map<Integer, Integer>> pktLenFreqsByHostname = new HashMap<>();
+// convsByHostname.forEach((host, convs) -> pktLenFreqsByHostname.put(host, TcpConversationUtils.countPacketLengthFrequencies(convs)));
+// System.out.println("Counted frequencies of packet lengths exchanged with each hostname.");
+// // For each hostname, count the frequencies of packet sequences (i.e., count how many conversations exchange a
+// // sequence of packets of some specific lengths).
+// final Map<String, Map<String, Integer>> pktSeqFreqsByHostname = new HashMap<>();
+// convsByHostname.forEach((host, convs) -> pktSeqFreqsByHostname.put(host, TcpConversationUtils.countPacketSequenceFrequencies(convs)));
+// System.out.println("Counted frequencies of packet sequences exchanged with each hostname.");
+// // For each hostname, count frequencies of packet pairs exchanged with that hostname across all conversations
+// final Map<String, Map<String, Integer>> pktPairFreqsByHostname =
+// TcpConversationUtils.countPacketPairFrequenciesByHostname(allConversations, dnsMap);
+// System.out.println("Counted frequencies of packet pairs per hostname");
+// // For each user action, reassemble the set of TCP connections occurring shortly after
+// final Map<UserAction, List<Conversation>> userActionToConversations = trafficLabeler.getLabeledReassembledTcpTraffic();
+// final Map<UserAction, Map<String, List<Conversation>>> userActionsToConvsByHostname = trafficLabeler.getLabeledReassembledTcpTraffic(dnsMap);
+// System.out.println("Reassembled TCP conversations occurring shortly after each user event");
+
+
+
+ /*
+ * NOTE: no need to generate these more complex on/off maps that also contain mappings from hostname and
+ * sequence identifiers as we do not care about hostnames and sequences during clustering.
+ * We can simply use the UserAction->List<Conversation> map to generate ON/OFF groupings of conversations.
+ */
+
+// // Contains all ON events: hostname -> sequence identifier -> list of conversations with that sequence
+// Map<String, Map<String, List<Conversation>>> ons = new HashMap<>();
+// // Contains all OFF events: hostname -> sequence identifier -> list of conversations with that sequence
+// Map<String, Map<String, List<Conversation>>> offs = new HashMap<>();
+// userActionsToConvsByHostname.forEach((ua, hostnameToConvs) -> {
+// Map<String, Map<String, List<Conversation>>> outer = ua.getType() == Type.TOGGLE_ON ? ons : offs;
+// hostnameToConvs.forEach((host, convs) -> {
+// Map<String, List<Conversation>> seqsToConvs = TcpConversationUtils.
+// groupConversationsByPacketSequence(convs, verbose);
+// outer.merge(host, seqsToConvs, (oldMap, newMap) -> {
+// newMap.forEach((sequence, cs) -> oldMap.merge(sequence, cs, (list1, list2) -> {
+// list1.addAll(list2);
+// return list1;
+// }));
+// return oldMap;
+// });
+// });
+// });
+//
+// System.out.println("==== ON ====");
+// // Print out all the pairs into a file for ON events
+// File fileOnEvents = new File(onPairsPath);
+// PrintWriter pwOn = null;
+// try {
+// pwOn = new PrintWriter(fileOnEvents);
+// } catch(Exception ex) {
+// ex.printStackTrace();
+// }
+// for(Map.Entry<String, Map<String, List<Conversation>>> entry : ons.entrySet()) {
+// Map<String, List<Conversation>> seqsToConvs = entry.getValue();
+// for(Map.Entry<String, List<Conversation>> entryConv : seqsToConvs.entrySet()) {
+// List<Conversation> listConv = entryConv.getValue();
+// // Just get the first Conversation because all Conversations in this group
+// // should have the same pairs of Application Data.
+// for(Conversation conv : listConv) {
+// // Process only if it is a TLS packet
+// if (conv.isTls()) {
+// List<PcapPacketPair> tlsAppDataList = TcpConversationUtils.extractTlsAppDataPacketPairs(conv);
+// for(PcapPacketPair pair: tlsAppDataList) {
+// System.out.println(PrintUtils.toCsv(pair, dnsMap));
+// pwOn.println(PrintUtils.toCsv(pair, dnsMap));
+// }
+// } else { // Non-TLS conversations
+// List<PcapPacketPair> packetList = TcpConversationUtils.extractPacketPairs(conv);
+// for(PcapPacketPair pair: packetList) {
+// System.out.println(PrintUtils.toCsv(pair, dnsMap));
+// pwOn.println(PrintUtils.toCsv(pair, dnsMap));
+// }
+// }
+// }
+// }
+// }
+// pwOn.close();
+//
+// System.out.println("==== OFF ====");
+// // Print out all the pairs into a file for ON events
+// File fileOffEvents = new File(offPairsPath);
+// PrintWriter pwOff = null;
+// try {
+// pwOff = new PrintWriter(fileOffEvents);
+// } catch(Exception ex) {
+// ex.printStackTrace();
+// }
+// for(Map.Entry<String, Map<String, List<Conversation>>> entry : offs.entrySet()) {
+// Map<String, List<Conversation>> seqsToConvs = entry.getValue();
+// for(Map.Entry<String, List<Conversation>> entryConv : seqsToConvs.entrySet()) {
+// List<Conversation> listConv = entryConv.getValue();
+// // Just get the first Conversation because all Conversations in this group
+// // should have the same pairs of Application Data.
+// for(Conversation conv : listConv) {
+// // Process only if it is a TLS packet
+// if (conv.isTls()) {
+// List<PcapPacketPair> tlsAppDataList = TcpConversationUtils.extractTlsAppDataPacketPairs(conv);
+// for(PcapPacketPair pair: tlsAppDataList) {
+// System.out.println(PrintUtils.toCsv(pair, dnsMap));
+// pwOff.println(PrintUtils.toCsv(pair, dnsMap));
+// }
+// } else { // Non-TLS conversations
+// List<PcapPacketPair> packetList = TcpConversationUtils.extractPacketPairs(conv);
+// for (PcapPacketPair pair : packetList) {
+// System.out.println(PrintUtils.toCsv(pair, dnsMap));
+// pwOff.println(PrintUtils.toCsv(pair, dnsMap));
+// }
+// }
+// }
+// }
+// }
+// pwOff.close();
+
+
+ // ================================================ CLUSTERING ================================================
+ // Note: no need to use the more convoluted on/off maps; can simply use the UserAction->List<Conversation> map
+ // when don't care about hostnames and sequences (see comment earlier).
+// List<Conversation> onConversations = userActionToConversations.entrySet().stream().
+// filter(e -> e.getKey().getType() == Type.TOGGLE_ON). // drop all OFF events from stream
+// map(e -> e.getValue()). // no longer interested in the UserActions
+// flatMap(List::stream). // flatten List<List<T>> to a List<T>
+// collect(Collectors.toList());
+// List<Conversation> offConversations = userActionToConversations.entrySet().stream().
+// filter(e -> e.getKey().getType() == Type.TOGGLE_OFF).
+// map(e -> e.getValue()).
+// flatMap(List::stream).
+// collect(Collectors.toList());
+// //Collections.sort(onConversations, (c1, c2) -> c1.getPackets().)
+//
+// List<PcapPacketPair> onPairs = onConversations.stream().
+// map(c -> c.isTls() ? TcpConversationUtils.extractTlsAppDataPacketPairs(c) :
+// TcpConversationUtils.extractPacketPairs(c)).
+// flatMap(List::stream). // flatten List<List<>> to List<>
+// collect(Collectors.toList());
+// List<PcapPacketPair> offPairs = offConversations.stream().
+// map(c -> c.isTls() ? TcpConversationUtils.extractTlsAppDataPacketPairs(c) :
+// TcpConversationUtils.extractPacketPairs(c)).
+// flatMap(List::stream). // flatten List<List<>> to List<>
+// collect(Collectors.toList());
+// // Note: need to update the DnsMap of all PcapPacketPairs if we want to use the IP/hostname-sensitive distance.
+// Stream.concat(Stream.of(onPairs), Stream.of(offPairs)).flatMap(List::stream).forEach(p -> p.setDnsMap(dnsMap));
+// // Perform clustering on conversation logged as part of all ON events.
+//// DBSCANClusterer<PcapPacketPair> onClusterer = new DBSCANClusterer<>(10.0, 45);
+// DBSCANClusterer<PcapPacketPair> onClusterer = new DBSCANClusterer<>(2, 2);
+// //DBSCANClusterer<PcapPacketPair> onClusterer = new DBSCANClusterer<>(10.0, 10);
+// List<Cluster<PcapPacketPair>> onClusters = onClusterer.cluster(onPairs);
+// // Perform clustering on conversation logged as part of all OFF events.
+//// DBSCANClusterer<PcapPacketPair> offClusterer = new DBSCANClusterer<>(10.0, 45);
+// DBSCANClusterer<PcapPacketPair> offClusterer = new DBSCANClusterer<>(2, 2);
+// //DBSCANClusterer<PcapPacketPair> offClusterer = new DBSCANClusterer<>(10.0, 10);
+// List<Cluster<PcapPacketPair>> offClusters = offClusterer.cluster(offPairs);
+// // Sort the conversations as reference
+// List<Conversation> sortedAllConversation = TcpConversationUtils.sortConversationList(allConversations);
+// // Output clusters
+// System.out.println("========================================");
+// System.out.println(" Clustering results for ON ");
+// System.out.println(" Number of clusters: " + onClusters.size());
+// int count = 0;
+// List<List<List<PcapPacket>>> ppListOfListReadOn = new ArrayList<>();
+// List<List<List<PcapPacket>>> ppListOfListListOn = new ArrayList<>();
+// for (Cluster<PcapPacketPair> c : onClusters) {
+// System.out.println(String.format("<<< Cluster #%02d (%03d points) >>>", ++count, c.getPoints().size()));
+// System.out.print(PrintUtils.toSummaryString(c));
+// if(c.getPoints().size() > 45 && c.getPoints().size() < 55) {
+// //if(c.getPoints().size() > 25) {
+// // Print to file
+// List<List<PcapPacket>> ppListOfList = PcapPacketUtils.clusterToListOfPcapPackets(c);
+// ppListOfListListOn.add(ppListOfList);
+// }
+// }
+// // TODO: Merging test
+// ppListOfListListOn = PcapPacketUtils.mergeSignatures(ppListOfListListOn, sortedAllConversation);
+// // TODO: Need to remove sequence 550 567 for Blossom phone side since it is not a good signature (overlap)!
+//// PcapPacketUtils.removeSequenceFromSignature(ppListOfListListOn, 1);
+// // TODO: Need to remove sequence 69 296 for Blossom device side since it is not a good signature (overlap)!
+//// PcapPacketUtils.removeSequenceFromSignature(ppListOfListListOn, 2);
+// // TODO: Need to remove sequence number 2 for ST plug since it is not a good signature!
+// //PcapPacketUtils.removeSequenceFromSignature(ppListOfListListOn, 2);
+// // TODO: Need to remove sequence number 0 for Arlo Camera since it is not a good signature!
+// //PcapPacketUtils.removeSequenceFromSignature(ppListOfListListOn, 0);
+// // TODO: Need to remove sequence number 0 for TP-Link plug since it is not a good signature!
+// // TODO: This sequence actually belongs to the local communication between the plug and the phone
+// //PcapPacketUtils.removeSequenceFromSignature(ppListOfListListOn, 0);
+// ppListOfListListOn = PcapPacketUtils.sortSignatures(ppListOfListListOn);
+// PcapPacketUtils.printSignatures(ppListOfListListOn);
+// //count = 0;
+// /*for (List<List<PcapPacket>> ll : ppListOfListListOn) {
+// PrintUtils.serializeClustersIntoFile("./onSignature" + ++count + ".sig", ll);
+// ppListOfListReadOn.add(PrintUtils.deserializeClustersFromFile("./onSignature" + count + ".sig"));
+// }*/
+// PrintUtils.serializeSignatureIntoFile("./onSignature.sig", ppListOfListListOn);
+// ppListOfListReadOn = PrintUtils.deserializeSignatureFromFile("./onSignature.sig");
+//
+// System.out.println("========================================");
+// System.out.println(" Clustering results for OFF ");
+// System.out.println(" Number of clusters: " + offClusters.size());
+// count = 0;
+// List<List<List<PcapPacket>>> ppListOfListReadOff = new ArrayList<>();
+// List<List<List<PcapPacket>>> ppListOfListListOff = new ArrayList<>();
+// for (Cluster<PcapPacketPair> c : offClusters) {
+// System.out.println(String.format("<<< Cluster #%03d (%06d points) >>>", ++count, c.getPoints().size()));
+// System.out.print(PrintUtils.toSummaryString(c));
+// if(c.getPoints().size() > 45 && c.getPoints().size() < 55) {
+// //if(c.getPoints().size() > 25) {
+// // Print to file
+// List<List<PcapPacket>> ppListOfList = PcapPacketUtils.clusterToListOfPcapPackets(c);
+// ppListOfListListOff.add(ppListOfList);
+// }
+// }
+// // TODO: Merging test
+// ppListOfListListOff = PcapPacketUtils.mergeSignatures(ppListOfListListOff, sortedAllConversation);
+// // TODO: Need to remove sequence 69 296 for Blossom device side since it is not a good signature (overlap)!
+//// PcapPacketUtils.removeSequenceFromSignature(ppListOfListListOff, 3);
+// // TODO: Need to remove sequence number 1 for Nest Thermostat since it is not a good signature!
+// //PcapPacketUtils.removeSequenceFromSignature(ppListOfListListOff, 1);
+// // TODO: Need to remove sequence number 0 for Arlo Camera since it is not a good signature!
+//// PcapPacketUtils.removeSequenceFromSignature(ppListOfListListOff, 1);
+// // TODO: Need to remove sequence number 2 for ST plug since it is not a good signature!
+// //PcapPacketUtils.removeSequenceFromSignature(ppListOfListListOff, 2);
+// // TODO: Need to remove sequence number 0 for TP-Link plug since it is not a good signature!
+// // TODO: This sequence actually belongs to the local communication between the plug and the phone
+// //PcapPacketUtils.removeSequenceFromSignature(ppListOfListListOff, 0);
+// ppListOfListListOff = PcapPacketUtils.sortSignatures(ppListOfListListOff);
+// PcapPacketUtils.printSignatures(ppListOfListListOff);
+// //count = 0;
+// /*for (List<List<PcapPacket>> ll : ppListOfListListOff) {
+// PrintUtils.serializeClustersIntoFile("./offSignature" + ++count + ".sig", ll);
+// ppListOfListReadOff.add(PrintUtils.deserializeClustersFromFile("./offSignature" + count + ".sig"));
+// }*/
+// PrintUtils.serializeSignatureIntoFile("./offSignature.sig", ppListOfListListOff);
+// ppListOfListReadOff = PrintUtils.deserializeSignatureFromFile("./offSignature.sig");
+// System.out.println("========================================");
+ // ============================================================================================================
+
+ // TODO: This part is just for DBSCAN sensitivity experiment
+ // TODO: This part is just for DBSCAN sensitivity experiment
+ // TODO: This part is just for DBSCAN sensitivity experiment
+ // TODO: This part is just for DBSCAN sensitivity experiment
+ // TODO: This part is just for DBSCAN sensitivity experiment
+// List<Conversation> onConversations = userActionToConversations.entrySet().stream().
+// filter(e -> e.getKey().getType() == Type.TOGGLE_ON). // drop all OFF events from stream
+// map(e -> e.getValue()). // no longer interested in the UserActions
+// flatMap(List::stream). // flatten List<List<T>> to a List<T>
+// collect(Collectors.toList());
+// List<Conversation> offConversations = userActionToConversations.entrySet().stream().
+// filter(e -> e.getKey().getType() == Type.TOGGLE_OFF).
+// map(e -> e.getValue()).
+// flatMap(List::stream).
+// collect(Collectors.toList());
+// //Collections.sort(onConversations, (c1, c2) -> c1.getPackets().)
+//
+// List<PcapPacketPair> onPairs = onConversations.stream().
+// map(c -> c.isTls() ? TcpConversationUtils.extractTlsAppDataPacketPairs(c) :
+// TcpConversationUtils.extractPacketPairs(c)).
+// flatMap(List::stream). // flatten List<List<>> to List<>
+// collect(Collectors.toList());
+// List<PcapPacketPair> offPairs = offConversations.stream().
+// map(c -> c.isTls() ? TcpConversationUtils.extractTlsAppDataPacketPairs(c) :
+// TcpConversationUtils.extractPacketPairs(c)).
+// flatMap(List::stream). // flatten List<List<>> to List<>
+// collect(Collectors.toList());
+// // Note: need to update the DnsMap of all PcapPacketPairs if we want to use the IP/hostname-sensitive distance.
+// Stream.concat(Stream.of(onPairs), Stream.of(offPairs)).flatMap(List::stream).forEach(p -> p.setDnsMap(dnsMap));
+//
+// double eps = 10; // loop from eps 1-10
+// int minPts = 50; // loop from minPts 30-50
+// for(int epsCount = 1; epsCount <= eps; epsCount++) {
+// for(int minPtsCount = 30; minPtsCount <= minPts; minPtsCount++) {
+// System.out.println("Eps: " + epsCount + " --- minPts: " + minPtsCount);
+// DBSCANClusterer<PcapPacketPair> onClusterer = new DBSCANClusterer<>(epsCount, minPtsCount);
+// DBSCANClusterer<PcapPacketPair> offClusterer = new DBSCANClusterer<>(epsCount, minPtsCount);
+// List<Cluster<PcapPacketPair>> onClusters = onClusterer.cluster(onPairs);
+// List<Cluster<PcapPacketPair>> offClusters = offClusterer.cluster(offPairs);
+// // Sort the conversations as reference
+// List<Conversation> sortedAllConversation = TcpConversationUtils.sortConversationList(allConversations);
+// // Output clusters
+// System.out.println("========================================");
+// System.out.println(" Clustering results for ON ");
+// System.out.println(" Number of clusters: " + onClusters.size());
+// int count = 0;
+// List<List<List<PcapPacket>>> ppListOfListListOn = new ArrayList<>();
+// for (Cluster<PcapPacketPair> c : onClusters) {
+// System.out.println(String.format("<<< Cluster #%02d (%03d points) >>>", ++count, c.getPoints().size()));
+// System.out.print(PrintUtils.toSummaryString(c));
+// if (c.getPoints().size() > 45 && c.getPoints().size() < 55) {
+//// if(c.getPoints().size() > 25) {
+// // Print to file
+// List<List<PcapPacket>> ppListOfList = PcapPacketUtils.clusterToListOfPcapPackets(c);
+// ppListOfListListOn.add(ppListOfList);
+// }
+// }
+// PcapPacketUtils.printSignatures(ppListOfListListOn);
+//
+// System.out.println("========================================");
+// System.out.println(" Clustering results for OFF ");
+// System.out.println(" Number of clusters: " + offClusters.size());
+// count = 0;
+// List<List<List<PcapPacket>>> ppListOfListListOff = new ArrayList<>();
+// for (Cluster<PcapPacketPair> c : offClusters) {
+// System.out.println(String.format("<<< Cluster #%03d (%06d points) >>>", ++count, c.getPoints().size()));
+//// System.out.print(PrintUtils.toSummaryString(c));
+// if (c.getPoints().size() > 45 && c.getPoints().size() < 55) {
+// //if(c.getPoints().size() > 25) {
+// // Print to file
+// List<List<PcapPacket>> ppListOfList = PcapPacketUtils.clusterToListOfPcapPackets(c);
+// ppListOfListListOff.add(ppListOfList);
+// }
+// }
+// PcapPacketUtils.printSignatures(ppListOfListListOff);
+// System.out.println();
+// System.out.println();
+// System.out.println();
+// // ============================================================================================================
+// }
+// }
+
+
+// // ================================================================================================
+// // <<< Some work-in-progress/explorative code that extracts a "representative" sequence >>>
+// //
+// // Currently need to know relevant hostname in advance :(
+// String hostname = "events.tplinkra.com";
+//// String hostname = "rfe-us-west-1.dch.dlink.com";
+// // Conversations with 'hostname' for ON events.
+// List<Conversation> onsForHostname = new ArrayList<>();
+// // Conversations with 'hostname' for OFF events.
+// List<Conversation> offsForHostname = new ArrayList<>();
+// // "Unwrap" sequence groupings in ons/offs maps.
+// ons.get(hostname).forEach((k,v) -> onsForHostname.addAll(v));
+// offs.get(hostname).forEach((k,v) -> offsForHostname.addAll(v));
+//
+//
+// Map<String, List<Conversation>> onsForHostnameGroupedByTlsAppDataSequence = TcpConversationUtils.groupConversationsByTlsApplicationDataPacketSequence(onsForHostname);
+//
+//
+// // Extract representative sequence for ON and OFF by providing the list of conversations with
+// // 'hostname' observed for each event type (the training data).
+// SequenceExtraction seqExtraction = new SequenceExtraction();
+//// ExtractedSequence extractedSequenceForOn = seqExtraction.extract(onsForHostname);
+//// ExtractedSequence extractedSequenceForOff = seqExtraction.extract(offsForHostname);
+//
+// ExtractedSequence extractedSequenceForOn = seqExtraction.extractByTlsAppData(onsForHostname);
+// ExtractedSequence extractedSequenceForOff = seqExtraction.extractByTlsAppData(offsForHostname);
+//
+// // Let's check how many ONs align with OFFs and vice versa (that is, how many times an event is incorrectly
+// // labeled).
+// int onsLabeledAsOff = 0;
+// Integer[] representativeOnSeq = TcpConversationUtils.getPacketLengthSequence(extractedSequenceForOn.getRepresentativeSequence());
+// Integer[] representativeOffSeq = TcpConversationUtils.getPacketLengthSequence(extractedSequenceForOff.getRepresentativeSequence());
+// SequenceAlignment<Integer> seqAlg = seqExtraction.getAlignmentAlgorithm();
+// for (Conversation c : onsForHostname) {
+// Integer[] onSeq = TcpConversationUtils.getPacketLengthSequence(c);
+// if (seqAlg.calculateAlignment(representativeOffSeq, onSeq) <= extractedSequenceForOff.getMaxAlignmentCost()) {
+// onsLabeledAsOff++;
+// }
+// }
+// int offsLabeledAsOn = 0;
+// for (Conversation c : offsForHostname) {
+// Integer[] offSeq = TcpConversationUtils.getPacketLengthSequence(c);
+// if (seqAlg.calculateAlignment(representativeOnSeq, offSeq) <= extractedSequenceForOn.getMaxAlignmentCost()) {
+// offsLabeledAsOn++;
+// }
+// }
+// System.out.println("");
+// // ================================================================================================
+//
+//
+// // -------------------------------------------------------------------------------------------------------------
+// // -------------------------------------------------------------------------------------------------------------