public void expressHintInterest(Name.Component excludeComp = null)
{
Name hintName = new Name(prefix);
hintName.append(this.getStartTimeComponent()).append(producerNameComponents.trackHint);
Interest hintInterest = new Interest(hintName);
if (excludeComp != null)
{
Exclude exclude = new Exclude();
exclude.appendAny();
// Debug.Log (" excluding hint num " + excludeComp.toNumber ());
exclude.appendComponent(excludeComp);
hintInterest.setExclude(exclude);
}
hintInterest.setMustBeFresh(true);
hintInterest.setInterestLifetimeMilliseconds(config.defaultHintLifetime);
hintInterest.setChildSelector(1);
HintHandler handler = new HintHandler(this);
FaceSingleton.getFace().expressInterest(hintInterest, handler, handler);
}
public void startOptConsumer()
{
Interest initialInterest = new Interest(new Name(optPrefix));
initialInterest.setMustBeFresh(true);
initialInterest.setInterestLifetimeMilliseconds(defaultInitialLifetime);
// for initial interest, the rightMostChild is preferred
initialInterest.setChildSelector(1);
face_.expressInterest(initialInterest, initialHandler_, initialHandler_);
}
onContentSet
(Namespace nameSpace, Namespace contentNamespace, long callbackId)
{
if (!(contentNamespace.getName().size() >= namespace_.getName().size() + 1 &&
contentNamespace.getName()[namespace_.getName().size()].isSegment()))
{
// Not a segment, ignore.
return;
}
// TODO: Use the Namespace mechanism to validate the Data packet.
var metaInfo = contentNamespace.getData().getMetaInfo();
if (metaInfo.getFinalBlockId().getValue().size() > 0 &&
metaInfo.getFinalBlockId().isSegment())
{
finalSegmentNumber_ = metaInfo.getFinalBlockId().toSegment();
}
// Report as many segments as possible where the node already has content.
while (true)
{
var nextSegmentNumber = maxRetrievedSegmentNumber_ + 1;
var nextSegment = debugGetRightmostLeaf
(namespace_[Name.Component.fromSegment(nextSegmentNumber)]);
if (nextSegment.getContent() == null)
{
break;
}
maxRetrievedSegmentNumber_ = nextSegmentNumber;
fireOnSegment(nextSegment);
if (finalSegmentNumber_ >= 0 && nextSegmentNumber == finalSegmentNumber_)
{
// Finished.
fireOnSegment(null);
return;
}
}
if (finalSegmentNumber_ < 0 && !didRequestFinalSegment_)
{
didRequestFinalSegment_ = true;
// Try to determine the final segment now.
var interestTemplate = new Interest();
interestTemplate.setInterestLifetimeMilliseconds(4000.0);
interestTemplate.setChildSelector(1);
namespace_.expressInterest(interestTemplate);
}
requestNewSegments(interestPipelineSize_);
}
void expressInitialInterest()
{
Debug.Log("expressInitialInterest: start");
Interest initialInterest = new Interest(this.prefix);
initialInterest.setMustBeFresh(true);
initialInterest.setInterestLifetimeMilliseconds(config.defaultInitialLifetime);
// for initial interest, the rightMostChild is preferred
initialInterest.setChildSelector(1);
InitialDataHandler handler = new InitialDataHandler(this);
Debug.Log("expressInitialInterest: " + initialInterest.toUri());
this.face.expressInterest(initialInterest, handler, handler);
}
private void fetchFirstSegment(Interest baseInterest)
{
Interest interest = new Interest(baseInterest);
interest.setChildSelector(1);
interest.setMustBeFresh(true);
try {
face_.expressInterest(interest, this, this);
} catch (IOException ex) {
try {
onError_.onError(net.named_data.jndn.util.SegmentFetcher.ErrorCode.IO_ERROR,
"I/O error fetching the first segment " + ex);
} catch (Exception exception) {
logger_.log(ILOG.J2CsMapping.Util.Logging.Level.SEVERE, "Error in onError", exception);
}
}
}
private void fetchNextSegment(Interest originalInterest_0, Name dataName,
long segment)
{
// Start with the original Interest to preserve any special selectors.
Interest interest = new Interest(originalInterest_0);
// Changing a field clears the nonce so that the library will generate a new one.
interest.setChildSelector(0);
interest.setMustBeFresh(false);
interest.setName(dataName.getPrefix(-1).appendSegment(segment));
try {
face_.expressInterest(interest, this, this);
} catch (IOException ex) {
try {
onError_.onError(net.named_data.jndn.util.SegmentFetcher.ErrorCode.IO_ERROR,
"I/O error fetching the next segment " + ex);
} catch (Exception exception) {
logger_.log(ILOG.J2CsMapping.Util.Logging.Level.SEVERE, "Error in onError", exception);
}
}
}
//fetchTrack
public void expressInterestForTrack(string trackID, Name.Component excludeComp = null)
{
Name trackName = new Name(prefix);
trackName.append(startTimeComponent).append(producerNameComponents.tracks).append(trackID); //.append ("0");
Interest trackInterest = new Interest(trackName);
if (excludeComp != null)
{
Exclude exclude = new Exclude();
exclude.appendAny();
exclude.appendComponent(excludeComp);
trackInterest.setExclude(exclude);
}
trackInterest.setMustBeFresh(true);
trackInterest.setChildSelector(1);
TrackHandler handler = new TrackHandler(this);
FaceSingleton.getFace().expressInterest(trackInterest, handler, handler);
}
static void Main(string[] args)
{
var interest = new Interest();
interest.wireDecode(new Blob(TlvInterest));
Console.Out.WriteLine("Interest:");
dumpInterest(interest);
// Set the name again to clear the cached encoding so we encode again.
interest.setName(interest.getName());
var encoding = interest.wireEncode();
Console.Out.WriteLine("");
Console.Out.WriteLine("Re-encoded interest " + encoding.toHex());
var reDecodedInterest = new Interest();
reDecodedInterest.wireDecode(encoding);
Console.Out.WriteLine("");
Console.Out.WriteLine("Re-decoded Interest:");
dumpInterest(reDecodedInterest);
var freshInterest = new Interest(new Name("/ndn/abc"));
freshInterest.setMinSuffixComponents(4);
freshInterest.setMaxSuffixComponents(6);
freshInterest.setInterestLifetimeMilliseconds(30000);
freshInterest.setChildSelector(1);
freshInterest.setMustBeFresh(true);
freshInterest.getKeyLocator().setType(KeyLocatorType.KEY_LOCATOR_DIGEST);
freshInterest.getKeyLocator().setKeyData
(new Blob(new byte[] {
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F
}));
freshInterest.getExclude().appendComponent(new Name("abc").get(0)).appendAny();
var identityStorage = new MemoryIdentityStorage();
var privateKeyStorage = new MemoryPrivateKeyStorage();
var keyChain = new KeyChain
(new IdentityManager(identityStorage, privateKeyStorage),
new SelfVerifyPolicyManager(identityStorage));
// Initialize the storage.
var keyName = new Name("/testname/DSK-123");
var certificateName = keyName.getSubName(0, keyName.size() - 1).append
("KEY").append(keyName.get(-1)).append("ID-CERT").append("0");
identityStorage.addKey(keyName, KeyType.RSA, new Blob(DEFAULT_RSA_PUBLIC_KEY_DER));
privateKeyStorage.setKeyPairForKeyName
(keyName, KeyType.RSA, new ByteBuffer(DEFAULT_RSA_PUBLIC_KEY_DER),
new ByteBuffer(DEFAULT_RSA_PRIVATE_KEY_DER));
// Make a Face just so that we can sign the interest.
var face = new Face("localhost");
face.setCommandSigningInfo(keyChain, certificateName);
face.makeCommandInterest(freshInterest);
Interest reDecodedFreshInterest = new Interest();
reDecodedFreshInterest.wireDecode(freshInterest.wireEncode());
Console.Out.WriteLine("");
Console.Out.WriteLine("Re-decoded fresh Interest:");
dumpInterest(reDecodedFreshInterest);
VerifyCallbacks callbacks = new VerifyCallbacks("Freshly-signed Interest");
keyChain.verifyInterest(reDecodedFreshInterest, callbacks, callbacks);
}