Creating a pure virtual class CcnxConsumer. CcnxConsumerCbr now
implements constant-rate interest generation.
diff --git a/apps/ccnx-consumer-cbr.h b/apps/ccnx-consumer-cbr.h
new file mode 100644
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--- /dev/null
+++ b/apps/ccnx-consumer-cbr.h
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+/* -*- 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: Ilya Moiseenko <iliamo@cs.ucla.edu>
+ * Alexander Afanasyev <alexander.afanasyev@ucla.edu>
+ */
+
+#ifndef CCNX_CONSUMER_CBR_H
+#define CCNX_CONSUMER_CBR_H
+
+#include "ccnx-consumer.h"
+
+namespace ns3
+{
+
+/**
+ * @ingroup ccnx
+ * \brief CCNx application for sending out Interest packets at a "constant" rate (Poisson process)
+ */
+class CcnxConsumerCbr: public CcnxConsumer
+{
+public:
+ static TypeId GetTypeId ();
+
+ /**
+ * \brief Default constructor
+ * Sets up randomizer function and packet sequence number
+ */
+ CcnxConsumerCbr ();
+
+ // From CcnxApp
+ // virtual void
+ // OnInterest (const Ptr<const CcnxInterestHeader> &interest);
+
+ // virtual void
+ // OnNack (const Ptr<const CcnxInterestHeader> &interest);
+
+ // virtual void
+ // OnContentObject (const Ptr<const CcnxContentObjectHeader> &contentObject,
+ // const Ptr<const Packet> &payload);
+
+protected:
+ /**
+ * \brief Constructs the Interest packet and sends it using a callback to the underlying CCNx protocol
+ */
+ virtual void
+ ScheduleNextPacket ();
+
+private:
+ void
+ UpdateMean ();
+
+ virtual void
+ SetPayloadSize (uint32_t payload);
+
+ void
+ SetDesiredRate (DataRate rate);
+
+ DataRate
+ GetDesiredRate () const;
+
+protected:
+ ExponentialVariable m_randExp; // packet inter-arrival time generation (Poisson process)
+ DataRate m_desiredRate; // Desired data packet rate
+};
+
+} // namespace ns3
+
+#endif