model: New content store variations: support for content freshness
The following content store realizations now fully support freshness set
in ContentObjects:
- ns3::ndn::cs::Freshness::Lru
- ns3::ndn::cs::Freshness::Random
- ns3::ndn::cs::Freshness::Fifo
Example ndn-simple-with-content-freshness demonstrates basics of new
content stores.
diff --git a/examples/custom-apps/dumb-requester.cc b/examples/custom-apps/dumb-requester.cc
new file mode 100644
index 0000000..1d068c4
--- /dev/null
+++ b/examples/custom-apps/dumb-requester.cc
@@ -0,0 +1,122 @@
+/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2011-2012 University of California, Los Angeles
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Author: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
+ */
+
+// dumb-requester.cc
+
+#include "dumb-requester.h"
+#include "ns3/ptr.h"
+#include "ns3/log.h"
+#include "ns3/simulator.h"
+#include "ns3/packet.h"
+#include "ns3/random-variable.h"
+#include "ns3/string.h"
+
+#include "ns3/ndn-app-face.h"
+#include "ns3/ndn-interest.h"
+#include "ns3/ndn-content-object.h"
+
+NS_LOG_COMPONENT_DEFINE ("DumbRequester");
+
+namespace ns3 {
+
+NS_OBJECT_ENSURE_REGISTERED (DumbRequester);
+
+// register NS-3 type
+TypeId
+DumbRequester::GetTypeId ()
+{
+ static TypeId tid = TypeId ("DumbRequester")
+ .SetParent<ndn::App> ()
+ .AddConstructor<DumbRequester> ()
+
+ .AddAttribute ("Prefix", "Requested name",
+ StringValue ("/dumb-interest"),
+ ndn::MakeNameComponentsAccessor (&DumbRequester::m_name),
+ ndn::MakeNameComponentsChecker ())
+ ;
+ return tid;
+}
+
+DumbRequester::DumbRequester ()
+ : m_isRunning (false)
+{
+}
+
+// Processing upon start of the application
+void
+DumbRequester::StartApplication ()
+{
+ // initialize ndn::App
+ ndn::App::StartApplication ();
+
+ m_isRunning = true;
+ Simulator::ScheduleNow (&DumbRequester::SendInterest, this);
+}
+
+// Processing when application is stopped
+void
+DumbRequester::StopApplication ()
+{
+ m_isRunning = false;
+ // cleanup ndn::App
+ ndn::App::StopApplication ();
+}
+
+void
+DumbRequester::SendInterest ()
+{
+ if (!m_isRunning) return;
+
+ /////////////////////////////////////
+ // Sending one Interest packet out //
+ /////////////////////////////////////
+
+ Ptr<ndn::NameComponents> prefix = Create<ndn::NameComponents> (m_name); // another way to create name
+
+ // Create and configure ndn::InterestHeader
+ ndn::InterestHeader interestHeader;
+ UniformVariable rand (0,std::numeric_limits<uint32_t>::max ());
+ interestHeader.SetNonce (rand.GetValue ());
+ interestHeader.SetName (prefix);
+ interestHeader.SetInterestLifetime (Seconds (1.0));
+
+ // Create packet and add ndn::InterestHeader
+ Ptr<Packet> packet = Create<Packet> ();
+ packet->AddHeader (interestHeader);
+
+ NS_LOG_DEBUG ("Sending Interest packet for " << *prefix);
+
+ // Forward packet to lower (network) layer
+ m_protocolHandler (packet);
+
+ // Call trace (for logging purposes)
+ m_transmittedInterests (&interestHeader, this, m_face);
+ Simulator::Schedule (Seconds (1.0), &DumbRequester::SendInterest, this);
+}
+
+void
+DumbRequester::OnContentObject (const Ptr<const ndn::ContentObjectHeader> &contentObject,
+ Ptr<Packet> payload)
+{
+ NS_LOG_DEBUG ("Receiving ContentObject packet for " << contentObject->GetName ());
+}
+
+
+} // namespace ns3