Implementing base support for TCP-style window-based limiting on per-FIB-prefix and per-face granularity
Currently, limits are supported only by ndn::fw::Limits forwarding
strategy and only at the very basic (not fully tested) level.
diff --git a/test/fw-per-fib-limits.cc b/test/fw-per-fib-limits.cc
new file mode 100644
index 0000000..d66856e
--- /dev/null
+++ b/test/fw-per-fib-limits.cc
@@ -0,0 +1,156 @@
+/* -*- 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>
+ */
+
+#include "fw-per-fib-limits.h"
+#include "ns3/core-module.h"
+#include "ns3/ndnSIM-module.h"
+#include "ns3/point-to-point-module.h"
+
+#include <boost/lexical_cast.hpp>
+
+NS_LOG_COMPONENT_DEFINE ("ndn.test.fw.PerFibLimits");
+
+namespace ns3 {
+namespace ndn {
+
+void Decay (Ptr<fib::Entry> entry)
+{
+ entry->GetLimits ().DecayCurrentLimit ();
+}
+
+
+template<class T>
+void
+PrintTracedValue (std::string context, T oldValue, T newValue)
+{
+ NS_LOG_DEBUG (context << ": " <<
+ oldValue << " => " << newValue);
+}
+
+void
+Test1 (Ptr<fib::Entry> entry)
+{
+ entry->GetLimits ().IsBelowLimit ();
+ entry->GetLimits ().DecreaseLimit ();
+}
+
+void
+Test2 (Ptr<fib::Entry> entry)
+{
+ entry->GetLimits ().RemoveOutstanding ();
+ for (uint32_t i = 0; i < 40; i++)
+ entry->GetLimits ().IncreaseLimit ();
+}
+
+void
+FwPerFibLimits::CheckCurMaxLimit (Ptr<fib::Entry> entry, double amount)
+{
+ NS_TEST_ASSERT_MSG_EQ_TOL ((double)entry->GetLimits ().m_curMaxLimit, amount, 0.1, "");
+}
+
+void
+FwPerFibLimits::CheckOutstanding (Ptr<fib::Entry> entry, uint32_t amount)
+{
+ NS_TEST_ASSERT_MSG_EQ ((double)entry->GetLimits ().m_outstanding, amount, "");
+}
+
+// void
+// FwPerFibLimits::Check2 (Ptr<fib::Entry> entry)
+// {
+// NS_TEST_ASSERT_MSG_EQ ((double)entry->GetLimits ().m_outstanding, 0, "");
+// }
+
+void
+FwPerFibLimits::DoRun ()
+{
+ Simulator::Destroy ();
+
+ NodeContainer nodes;
+ nodes.Create (2);
+
+ PointToPointHelper p2pHelper;
+ p2pHelper.Install (nodes);
+
+ StackHelper ndn;
+ ndn.SetForwardingStrategy ("ns3::ndn::fw::PerFibLimits");
+ ndn.Install (nodes);
+
+ Ptr<Fib> fib = nodes.Get (0)->GetObject<Fib> ();
+ ndn.AddRoute (nodes.Get (0), "/bla", 0, 10);
+
+ Ptr<fib::Entry> entry = fib->Begin ();
+
+ bool ok = entry->GetLimits ().TraceConnect ("CurMaxLimit", "fibEntry.curMax", MakeCallback (PrintTracedValue<double>));
+ NS_TEST_ASSERT_MSG_EQ (ok, true, "");
+
+ ok = entry->GetLimits ().TraceConnect ("Outstanding", "fibEntry.out", MakeCallback (PrintTracedValue<uint32_t>));
+ NS_TEST_ASSERT_MSG_EQ (ok, true, "");
+
+ ok = nodes.Get (0)->GetObject<L3Protocol> ()->GetFace (0)->GetLimits ()->TraceConnect ("CurMaxLimit", "face.curMax", MakeCallback (PrintTracedValue<double>));
+ NS_TEST_ASSERT_MSG_EQ (ok, true, "");
+ ok = nodes.Get (0)->GetObject<L3Protocol> ()->GetFace (0)->GetLimits ()->TraceConnect ("Outstanding", "face.out", MakeCallback (PrintTracedValue<uint32_t>));
+ NS_TEST_ASSERT_MSG_EQ (ok, true, "");
+
+ nodes.Get (0)->GetObject<L3Protocol> ()->GetFace (0)->GetLimits ()->SetMaxLimit (100);
+
+ entry->GetLimits ().SetMaxLimit (100);
+ NS_TEST_ASSERT_MSG_EQ_TOL ((double)entry->GetLimits ().m_curMaxLimit, 100, 0.1, "");
+
+ entry->GetLimits ().DecreaseLimit ();
+ NS_TEST_ASSERT_MSG_EQ_TOL ((double)entry->GetLimits ().m_curMaxLimit, 50, 0.1, "");
+
+ entry = fib->Begin ();
+
+ NS_LOG_DEBUG (entry);
+ Simulator::Schedule (Seconds (0.1), Decay, entry);
+ Simulator::Schedule (Seconds (25.0), Decay, entry);
+ Simulator::Schedule (Seconds (28.0), Decay, entry);
+ Simulator::Schedule (Seconds (40.0), Decay, entry);
+ Simulator::Schedule (Seconds (60.0), Decay, entry);
+ Simulator::Schedule (Seconds (100.0), Decay, entry);
+
+ Simulator::Schedule (Seconds (100.1), &FwPerFibLimits::CheckCurMaxLimit, this, entry, 81.5);
+
+ Simulator::Schedule (Seconds (100.5), &FwPerFibLimits::CheckOutstanding, this, entry, 0);
+ Simulator::Schedule (Seconds (101.0), Test1, entry);
+ Simulator::Schedule (Seconds (101.5), &FwPerFibLimits::CheckOutstanding, this, entry, 1);
+ Simulator::Schedule (Seconds (101.5), &FwPerFibLimits::CheckCurMaxLimit, this, entry, 40.75);
+
+ Simulator::Schedule (Seconds (102.0), Test2, entry);
+ Simulator::Schedule (Seconds (102.5), &FwPerFibLimits::CheckOutstanding, this, entry, 0);
+ Simulator::Schedule (Seconds (102.5), &FwPerFibLimits::CheckCurMaxLimit, this, entry, 41.75);
+
+ // Config::Connect ("/NodeList/*/$ns3::ndn::L3Protocol/FaceList/*/Limits/CurMaxLimit", MakeCallback (PrintTracedValue<double>));
+ // Config::Connect ("/NodeList/*/$ns3::ndn::L3Protocol/FaceList/*/Limits/Outstanding", MakeCallback (PrintTracedValue<uint32_t>));
+
+ AppHelper consumer ("ns3::ndn::ConsumerBatches");
+ consumer.SetPrefix ("/bla");
+ consumer.SetAttribute ("Batches", StringValue ("105 1"));
+ consumer.SetAttribute ("LifeTime", StringValue ("1s"));
+ consumer.Install (nodes.Get (0));
+
+ Simulator::Stop (Seconds (110.0));
+ Simulator::Run ();
+
+ Simulator::Destroy ();
+}
+
+} // namespace ndn
+} // namespace ns3