packet_generator.h

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#ifndef PACKET_GENERATOR_H
#define PACKET_GENERATOR_H
 
#include <itpp/base/random.h>
 
#if (defined(_MSC_VER) && defined(ITPP_SHARED_LIB) && !(defined(itpp_EXPORTS) || defined(itpp_debug_EXPORTS)))
 
#ifndef ITPP_PROTOCOL_EXCLUDED
#define ITPP_PROTOCOL_EXCLUDED
#pragma message( "PROTOCOL definitions are not available for MSVC shared builds" )
#endif
 
#else
 
#include <itpp/protocol/packet.h>
 
namespace itpp
{



class Packet_Generator
{
public:
  Packet_Generator(const int Packet_size = 150, const unsigned long int Max_packets = 0);
  virtual ~Packet_Generator();
  Signal<Packet*> output;
  Slot<Packet_Generator, bool> start;
  void set_parameters(const int Packet_size, const unsigned long int Max_packets);
  int get_packet_size();
  int get_max_packets();
protected:
  virtual Ttype delta_t() = 0;
private:
  Slot<Packet_Generator, Packet*> next;
  void handle_next(Packet*);
  void handle_start(const bool run);
  bool keep_running;
  unsigned long int id;
  int packet_size;
  unsigned long int max_packets;
};
 

class Poisson_Packet_Generator : public Packet_Generator
{
public:
  Poisson_Packet_Generator(const double Avg_bit_rate = 1.0, const int Packet_size = 150, const unsigned long int Max_packets = 0);
  virtual ~Poisson_Packet_Generator();
  void set_parameters(const double Avg_bit_rate, const int Packet_size, const unsigned long int Max_packets);
  double get_avg_bit_rate();
protected:
  virtual Ttype delta_t();
  double avg_delta_t;
  double avg_bit_rate;
  Exponential_RNG ee;
};
 

class Constant_Rate_Packet_Generator : public Poisson_Packet_Generator
{
public:
  Constant_Rate_Packet_Generator(const double Avg_bit_rate = 1.0, const int Packet_size = 150, const unsigned long int Max_packets = 0);
  virtual ~Constant_Rate_Packet_Generator();
protected:
  virtual Ttype delta_t();
};

class Burst_WWW_Packet_Generator : public Poisson_Packet_Generator
{
public:
  Burst_WWW_Packet_Generator(const double Avg_bit_rate = 1.0, const int Packet_size = 150, const int Max_packets = 0);
  virtual ~Burst_WWW_Packet_Generator();
protected:
  virtual Ttype delta_t();
  int N;
  int Navg;
  double Ti;
  double Tr;
};
 

class Sink
{
public:
  Sink(const unsigned long int Max_packets = 1000);
  ~Sink();
  // -- Slots -- //
  Slot<Sink, Packet*> packet_input;
private:
  void handle_packet_input(Packet* packet);
  unsigned long int Ncp;
  unsigned long int Nbytes;
  unsigned long int max_packets;
  Ttype start_time;
};

 
} // namespace itpp
 
#endif
 
#endif // #ifndef PACKET_GENERATOR_H