add tracing support to PacketSink

src/applications/packet-sink/packet-sink.cc

@@ -25,6 +25,7 @@
 #include "ns3/simulator.h"
 #include "ns3/socket-factory.h"
 #include "ns3/packet.h"
+#include "ns3/composite-trace-resolver.h"
 #include "packet-sink.h"
 
 using namespace std;
@@ -101,8 +102,23 @@ void PacketSink::Receive(Ptr<Socket> socket, Ptr<Packet> packet,
       NS_LOG_INFO ("Received " << packet->GetSize() << " bytes from " << 
         address.GetIpv4() << " [" << address << "]---'" << 
         packet->PeekData() << "'");
-      // TODO:  Add a tracing source here
     }
+  m_rxTrace (packet, from);
+}
+
+Ptr<TraceResolver> 
+PacketSink::GetTraceResolver (void) const
+{
+  Ptr<CompositeTraceResolver> resolver = Create<CompositeTraceResolver> ();
+  resolver->AddSource ("rx",
+                       TraceDoc ("A new packet has been received",
+                                 "Ptr<const Packet>",
+                                 "The newly-received packet.",
+                                 "const Address &",
+                                 "The source address of the received packet."),
+                       m_rxTrace);
+  resolver->SetParentResolver (Application::GetTraceResolver ());
+  return resolver;
 }
 
 } // Namespace ns3

src/applications/packet-sink/packet-sink.h

@@ -24,6 +24,8 @@
 #include "ns3/application.h"
 #include "ns3/event-id.h"
 #include "ns3/ptr.h"
+#include "ns3/callback-trace-source.h"
+#include "ns3/address.h"
 
 namespace ns3 {
 
@@ -68,6 +70,8 @@ private:
   // inherited from Application base class.
   virtual void StartApplication (void);    // Called at time specified by Start
   virtual void StopApplication (void);     // Called at time specified by Stop
+  // inherited from Object base class.
+  virtual Ptr<TraceResolver> GetTraceResolver (void) const;
 
   void Construct (Ptr<Node> n,
                   const Address &local,
@@ -78,6 +82,7 @@ private:
   Ptr<Socket>     m_socket;       // Associated socket
   Address         m_local;        // Local address to bind to
   std::string     m_iid;          // Protocol name (e.g., "Udp")
+  CallbackTraceSource<Ptr<const Packet>, const Address &> m_rxTrace;
   
 };