[Ns-developers] DelayBox - ns-3

[Mathieu Lacage]

On Mon, 2008-04-07 at 21:22 -0400, Matt Crinklaw wrote:

> 1. The application writer will be responsible for creating a source
> and invoking that source on every packet they send to the socket.

yes.

> 2. The application wrtier is also responsible for connecting their
> source to whatever sinks I provide to tag the packets.

Application writers are not responsible for doing the connection. They
just have to record their trace source in their TypeId in
MyApplication::GetTypeId: the code in src/core/config.cc will take care
of doing the connection for them.

class MyApplication : public Application
{
public:
  static TypeId GetTypeId (void);

private:
  // invoke this callback whenever a new packet is created.
  TracedCallback<Ptr<const Packet> > m_txPacket;
};

TypeId
MyApplication::GetTypeId (void)
{
  static TypeId tid = TypeId ("ns3::MyApplication")
    .SetParent<Application> ()
    .AddConstructor<MyApplication> ()
    .AddTraceSource ("TxPacket", "generate and send a packet down to
socket",
                   MakeTraceSourceAccessor (&MyApplication::m_txPacket))
  ;
  return tid;
}

I hope that this answers your questions,
Mathieu