packet_generator.h

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#ifndef PACKET_GENERATOR_H
#define PACKET_GENERATOR_H

#include <itpp/protocol/packet.h>
#include <itpp/base/random.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 // #ifndef PACKET_GENERATOR_H

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