/// <summary>
/// Get the first header field in lpPacket which is a NetworkNack. This is
/// an internal method which the application normally would not use.
/// </summary>
///
/// <param name="lpPacket">The LpPacket with the header fields to search.</param>
/// <returns>The first NetworkNack header field, or null if not found.</returns>
static public NetworkNack getFirstHeader(LpPacket lpPacket)
{
for (int i = 0; i < lpPacket.countHeaderFields(); ++i)
{
Object field = lpPacket.getHeaderField(i);
if (field is NetworkNack)
{
return((NetworkNack)field);
}
}
return(null);
}
/// <summary>
/// Decode input as an LpPacket and set the fields of the lpPacket object. Your
/// derived class should override.
/// </summary>
///
/// <param name="lpPacket">The LpPacket object whose fields are updated.</param>
/// <param name="input"></param>
/// <exception cref="EncodingException">For invalid encoding.</exception>
/// <exception cref="System.NotSupportedException">for unimplemented if the derivedclass does not override.</exception>
public virtual void decodeLpPacket(LpPacket lpPacket, ByteBuffer input)
{
throw new NotSupportedException(
"decodeLpPacket is not implemented");
}
public void onReceivedElement(ByteBuffer element)
{
LpPacket lpPacket = null;
if (element.get(0) == net.named_data.jndn.encoding.tlv.Tlv.LpPacket_LpPacket)
{
// Decode the LpPacket and replace element with the fragment.
lpPacket = new LpPacket();
// Set copy false so that the fragment is a slice which will be copied below.
// The header fields are all integers and don't need to be copied.
net.named_data.jndn.encoding.TlvWireFormat.get().decodeLpPacket(lpPacket, element, false);
element = lpPacket.getFragmentWireEncoding().buf();
}
// First, decode as Interest or Data.
Interest interest = null;
Data data = null;
if (element.get(0) == net.named_data.jndn.encoding.tlv.Tlv.Interest || element.get(0) == net.named_data.jndn.encoding.tlv.Tlv.Data)
{
TlvDecoder decoder = new TlvDecoder(element);
if (decoder.peekType(net.named_data.jndn.encoding.tlv.Tlv.Interest, element.remaining()))
{
interest = new Interest();
interest.wireDecode(element, net.named_data.jndn.encoding.TlvWireFormat.get());
if (lpPacket != null)
{
interest.setLpPacket(lpPacket);
}
}
else if (decoder.peekType(net.named_data.jndn.encoding.tlv.Tlv.Data, element.remaining()))
{
data = new Data();
data.wireDecode(element, net.named_data.jndn.encoding.TlvWireFormat.get());
if (lpPacket != null)
{
data.setLpPacket(lpPacket);
}
}
}
if (lpPacket != null)
{
// We have decoded the fragment, so remove the wire encoding to save memory.
lpPacket.setFragmentWireEncoding(new Blob());
NetworkNack networkNack = net.named_data.jndn.NetworkNack.getFirstHeader(lpPacket);
if (networkNack != null)
{
if (interest == null)
{
// We got a Nack but not for an Interest, so drop the packet.
return;
}
ArrayList <PendingInterestTable.Entry> pitEntries = new ArrayList <PendingInterestTable.Entry>();
pendingInterestTable_.extractEntriesForNackInterest(interest,
pitEntries);
for (int i = 0; i < pitEntries.Count; ++i)
{
PendingInterestTable.Entry pendingInterest = pitEntries[i];
try {
pendingInterest.getOnNetworkNack().onNetworkNack(
pendingInterest.getInterest(), networkNack);
} catch (Exception ex) {
logger_.log(ILOG.J2CsMapping.Util.Logging.Level.SEVERE, "Error in onNack", ex);
}
}
// We have processed the network Nack packet.
return;
}
}
// Now process as Interest or Data.
if (interest != null)
{
dispatchInterest(interest);
}
else if (data != null)
{
satisfyPendingInterests(data);
}
}
/// <summary>
/// An internal library method to set the LpPacket for an incoming packet. The
/// application should not call this.
/// </summary>
///
/// <param name="lpPacket">The LpPacket. This does not make a copy.</param>
/// <returns>This Data so that you can chain calls to update values.</returns>
/// @note This is an experimental feature. This API may change in the future.
internal Data setLpPacket(LpPacket lpPacket)
{
lpPacket_ = lpPacket;
// Don't update changeCount_ since this doesn't affect the wire encoding.
return(this);
}
public void onReceivedElement(ByteBuffer element)
{
LpPacket lpPacket = null;
if (element.get(0) == net.named_data.jndn.encoding.tlv.Tlv.LpPacket_LpPacket)
{
// Decode the LpPacket and replace element with the fragment.
lpPacket = new LpPacket();
net.named_data.jndn.encoding.TlvWireFormat.get().decodeLpPacket(lpPacket, element);
element = lpPacket.getFragmentWireEncoding().buf();
}
// First, decode as Interest or Data.
Interest interest = null;
Data data = null;
if (element.get(0) == net.named_data.jndn.encoding.tlv.Tlv.Interest || element.get(0) == net.named_data.jndn.encoding.tlv.Tlv.Data)
{
TlvDecoder decoder = new TlvDecoder(element);
if (decoder.peekType(net.named_data.jndn.encoding.tlv.Tlv.Interest, element.remaining()))
{
interest = new Interest();
interest.wireDecode(element, net.named_data.jndn.encoding.TlvWireFormat.get());
if (lpPacket != null)
{
interest.setLpPacket(lpPacket);
}
}
else if (decoder.peekType(net.named_data.jndn.encoding.tlv.Tlv.Data, element.remaining()))
{
data = new Data();
data.wireDecode(element, net.named_data.jndn.encoding.TlvWireFormat.get());
if (lpPacket != null)
{
data.setLpPacket(lpPacket);
}
}
}
if (lpPacket != null)
{
// We have decoded the fragment, so remove the wire encoding to save memory.
lpPacket.setFragmentWireEncoding(new Blob());
NetworkNack networkNack = net.named_data.jndn.NetworkNack.getFirstHeader(lpPacket);
if (networkNack != null)
{
if (interest == null)
{
// We got a Nack but not for an Interest, so drop the packet.
return;
}
ArrayList <PendingInterestTable.Entry> pitEntries = new ArrayList <PendingInterestTable.Entry>();
pendingInterestTable_.extractEntriesForNackInterest(interest,
pitEntries);
for (int i = 0; i < pitEntries.Count; ++i)
{
PendingInterestTable.Entry pendingInterest = pitEntries[i];
try {
pendingInterest.getOnNetworkNack().onNetworkNack(
pendingInterest.getInterest(), networkNack);
} catch (Exception ex) {
logger_.log(ILOG.J2CsMapping.Util.Logging.Level.SEVERE, "Error in onNack", ex);
}
}
// We have process the network Nack packet.
return;
}
}
// Now process as Interest or Data.
if (interest != null)
{
// Quickly lock and get all interest filter callbacks which match.
ArrayList matchedFilters = new ArrayList();
interestFilterTable_.getMatchedFilters(interest, matchedFilters);
// The lock on interestFilterTable_ is released, so call the callbacks.
for (int i_0 = 0; i_0 < matchedFilters.Count; ++i_0)
{
InterestFilterTable.Entry entry = (InterestFilterTable.Entry)matchedFilters[i_0];
try {
entry.getOnInterest().onInterest(
entry.getFilter().getPrefix(), interest,
entry.getFace(), entry.getInterestFilterId(),
entry.getFilter());
} catch (Exception ex_1) {
logger_.log(ILOG.J2CsMapping.Util.Logging.Level.SEVERE, "Error in onInterest", ex_1);
}
}
}
else if (data != null)
{
ArrayList <PendingInterestTable.Entry> pitEntries_2 = new ArrayList <PendingInterestTable.Entry>();
pendingInterestTable_.extractEntriesForExpressedInterest(
data.getName(), pitEntries_2);
for (int i_3 = 0; i_3 < pitEntries_2.Count; ++i_3)
{
PendingInterestTable.Entry pendingInterest_4 = pitEntries_2[i_3];
try {
pendingInterest_4.getOnData().onData(
pendingInterest_4.getInterest(), data);
} catch (Exception ex_5) {
logger_.log(ILOG.J2CsMapping.Util.Logging.Level.SEVERE, "Error in onData", ex_5);
}
}
}
}
/// <summary>
/// Decode input as an LpPacket and set the fields of the lpPacket object. Copy
/// from the input when making new Blob values. Your derived class should
/// override.
/// </summary>
///
/// <param name="lpPacket">The LpPacket object whose fields are updated.</param>
/// <param name="input"></param>
/// <exception cref="EncodingException">For invalid encoding.</exception>
/// <exception cref="System.NotSupportedException">for unimplemented if the derivedclass does not override.</exception>
public void decodeLpPacket(LpPacket lpPacket, ByteBuffer input)
{
decodeLpPacket(lpPacket, input, true);
}
