/usr/include/libtgvoip/CongestionControl.h is in libtgvoip-dev 1.0.3-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// libtgvoip is free and unencumbered public domain software.
// For more information, see http://unlicense.org or the UNLICENSE file
// you should have received with this source code distribution.
//
#ifndef LIBTGVOIP_CONGESTIONCONTROL_H
#define LIBTGVOIP_CONGESTIONCONTROL_H
#include <stdlib.h>
#include <stdint.h>
#include "threading.h"
#define TGVOIP_CONCTL_STARTUP 0
#define TGVOIP_CONCTL_DRAIN 1
#define TGVOIP_CONCTL_PROBE_BW 2
#define TGVOIP_CONCTL_PROBE_RTT 3
#define TGVOIP_CONCTL_ACT_INCREASE 1
#define TGVOIP_CONCTL_ACT_DECREASE 2
#define TGVOIP_CONCTL_ACT_NONE 0
namespace tgvoip{
struct tgvoip_congestionctl_packet_t{
uint32_t seq;
double sendTime;
size_t size;
};
typedef struct tgvoip_congestionctl_packet_t tgvoip_congestionctl_packet_t;
class CongestionControl{
public:
CongestionControl();
~CongestionControl();
void PacketSent(uint32_t seq, size_t size);
void PacketAcknowledged(uint32_t seq);
double GetAverageRTT();
double GetMinimumRTT();
size_t GetInflightDataSize();
size_t GetCongestionWindow();
size_t GetAcknowledgedDataSize();
void Tick();
int GetBandwidthControlAction();
uint32_t GetSendLossCount();
private:
double rttHistory[100];
tgvoip_congestionctl_packet_t inflightPackets[100];
size_t inflightHistory[30];
int state;
uint32_t lossCount;
double tmpRtt;
double lastActionTime;
double lastActionRtt;
double stateTransitionTime;
int tmpRttCount;
char rttHistorySize;
unsigned int rttHistoryTop;
unsigned int inflightHistoryTop;
uint32_t lastSentSeq;
uint32_t tickCount;
size_t inflightDataSize;
size_t cwnd;
tgvoip_mutex_t mutex;
};
}
#endif //LIBTGVOIP_CONGESTIONCONTROL_H
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