One more big change: prototypes of most of the forwarding strategy functions has been changed
InterestHeader now constant everywhere and only smart pointer is used, instead of passing some parameters by
reference to the smart pointer (doesn't really make sense).
Another big change that is not fully visible for now: PIT entry now
stores the whole pointer to InterestHeader, which can be used with
delayed Interest processing procedures (previously, only Name was
stored, which is really a big simplification of PIT).
diff --git a/model/fw/stats-based-randomized-interest-accept.h b/model/fw/stats-based-randomized-interest-accept.h
new file mode 100644
index 0000000..7ce0e9c
--- /dev/null
+++ b/model/fw/stats-based-randomized-interest-accept.h
@@ -0,0 +1,86 @@
+/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2011 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>
+ */
+
+
+#ifndef NDNSIM_STATS_BASED_RANDOMIZED_INTEREST_ACCEPT_H
+#define NDNSIM_STATS_BASED_RANDOMIZED_INTEREST_ACCEPT_H
+
+#include "ns3/event-id.h"
+
+#include "fw-stats.h"
+
+namespace ns3 {
+namespace ndn {
+namespace fw {
+
+/**
+ * \ingroup ndn
+ * \brief Strategy implementing stats-based randomized accept for interests
+ *
+ * (prerequisite) Window-based limits should be enabled
+ *
+ * This strategy has several limitation to accept interest for further processing:
+ * - if per-fib-entry limit or per-face limit is exhausted, Interest will not be accepted
+ * - if the number of interests received from the incoming face is less than threshold, then no special handling
+ * - if this number is greater than threshold, an Interest will be accepted with probability equal to satisfaction ratio for this incoming face (overall per-face).
+ * (probability is shifted to allow small rate of acceptance (1% by default) of Interests from faces with 0 satisfaction ratio.
+ */
+class StatsBasedRandomizedInterestAccept :
+ public FwStats
+{
+public:
+ static TypeId
+ GetTypeId ();
+
+ /**
+ * @brief Default constructor
+ */
+ StatsBasedRandomizedInterestAccept ();
+
+ virtual void
+ WillEraseTimedOutPendingInterest (Ptr<pit::Entry> pitEntry);
+
+protected:
+ virtual bool
+ WillSendOutInterest (Ptr<Face> outFace,
+ Ptr<const InterestHeader> header,
+ Ptr<pit::Entry> pitEntry);
+
+ virtual void
+ WillSatisfyPendingInterest (Ptr<Face> inFace,
+ Ptr<pit::Entry> pitEntry);
+
+ // from Object
+ void
+ DoDispose ();
+
+private:
+ double m_threshold;
+ double m_graceAcceptProbability;
+
+ typedef FwStats super;
+};
+
+
+} // namespace fw
+} // namespace ndn
+} // namespace ns3
+
+#endif // NDNSIM_STATS_BASED_RANDOMIZED_INTEREST_ACCEPT_H