uwvbr-module.h

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//
// Copyright (c) 2017 Regents of the SIGNET lab, University of Padova.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
// 3. Neither the name of the University of Padova (SIGNET lab) nor the
//    names of its contributors may be used to endorse or promote products
//    derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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//
 
#ifndef UWVBR_MODULE_H
#define UWVBR_MODULE_H
 
#include <uwip-module.h>
#include <uwudp-module.h>
 
#include <module.h>
#include <iostream>
#include <string>
#include <sstream>
#include <climits>
 
#define UWVBR_DROP_REASON_UNKNOWN_TYPE \
    "UKT" 
#define UWVBR_DROP_REASON_OUT_OF_SEQUENCE \
    "OOS" 
#define UWVBR_DROP_REASON_DUPLICATED_PACKET \
    "DPK" 
#define HDR_UWVBR(P) (hdr_uwvbr::access(P))
 
 
 
extern packet_t PT_UWVBR;
 
typedef struct hdr_uwvbr {
    u_int16_t sn_; 
    float rftt_; 
    bool rftt_valid_; 
    static int offset_; 
    inline static int &
    offset()
    {
        return offset_;
    }
 
    inline static struct hdr_uwvbr *
    access(const Packet *p)
    {
        return (struct hdr_uwvbr *) p->access(offset_);
    }
 
    inline u_int16_t &
    sn()
    {
        return sn_;
    }
 
    inline bool &
    rftt_valid()
    {
        return rftt_valid_;
    }
 
    inline float &
    rftt()
    {
        return (rftt_);
    }
} hdr_uwvbr;
 
class UwVbrModule;
 
class UwVbrSendTimer : public TimerHandler
{
public:
    UwVbrSendTimer(UwVbrModule *m)
        : TimerHandler()
    {
        module = m;
    }
 
protected:
    virtual void expire(Event *e);
    UwVbrModule *module;
};
 
class UwVbrPeriodSwitcher : public TimerHandler
{
public:
    UwVbrPeriodSwitcher(UwVbrModule *m)
        : TimerHandler()
    {
        module = m;
    }
 
protected:
    virtual void expire(Event *e);
    UwVbrModule *module;
};
 
class UwVbrModule : public Module
{
    friend class UwVbrSendTimer;
    friend class UwVbrPeriodSwitcher;
 
public:
    UwVbrModule();
 
    virtual ~UwVbrModule();
 
    virtual void recv(Packet *);
 
    virtual void recv(Packet *p, Handler *h);
 
    virtual int command(int argc, const char *const *argv);
 
    virtual int crLayCommand(ClMessage *m);
 
    virtual double GetRTT() const;
 
    virtual double GetFTT() const;
 
    virtual double GetPER() const;
 
    virtual double GetTHR() const;
 
    virtual double GetRTTstd() const;
 
    virtual double GetFTTstd() const;
 
    virtual void resetStats();
 
protected:
    static int uidcnt_; 
    u_int16_t dstPort_; 
    nsaddr_t dstAddr_; 
    bool *sn_check; 
    int PoissonTraffic_; 
    int debug_; 
    int drop_out_of_order_; 
    int txsn; 
    int hrsn; 
    int
            pkts_recv; 
    int pkts_ooseq; 
    int
            pkts_lost; 
    int pkts_invalid; 
    int pkts_last_reset; 
    double rftt; 
    double srtt; 
    double sftt; 
    double lrtime; 
    double sthr; 
    int period_identifier_; 
    double period1_; 
    double period2_; 
    double timer_switch_1_; 
    double timer_switch_2_; 
    UwVbrSendTimer sendTmr_; 
    UwVbrPeriodSwitcher
            period_switcher_; 
    int pktSize_; 
    /* Cumulative statistics */
    double sumrtt; 
    double sumrtt2; 
    int rttsamples; 
    double sumftt; 
    double sumftt2; 
    int fttsamples; 
    double sumbytes; 
    double sumdt; 
    uint32_t esn; 
    virtual void initPkt(Packet *p);
 
    virtual void sendPkt();
 
    virtual void transmit();
 
    virtual void start();
 
    virtual void stop();
 
    virtual void updateRTT(const double &);
 
    virtual void updateFTT(const double &);
 
    virtual void updateThroughput(const int &, const double &);
 
    virtual void incrPktLost(const int &);
 
    virtual void incrPktRecv();
 
    virtual void incrPktOoseq();
 
    virtual void incrPktInvalid();
 
    virtual double getTimeBeforeNextPkt();
 
    virtual void switchPeriod();
 
    static inline const int
    getVbrHeaderSize()
    {
        return sizeof(hdr_uwvbr);
    }
};
 
#endif // UWVBR_MODULE_H