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improved window size reculculation algorithm

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orignal 2024-08-29 18:57:14 -04:00
parent 937809bc0f
commit 604bdf314f
2 changed files with 115 additions and 94 deletions
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11
libi2pd/Streaming.h
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@ -56,7 +56,9 @@ namespace stream
const int INITIAL_WINDOW_SIZE = 10;
const int MIN_WINDOW_SIZE = 1;
const int MAX_WINDOW_SIZE = 1024;
const double RTT_EWMA_ALPHA = 0.125;
const double RTT_EWMA_ALPHA = 0.25;
const double SLOWRTT_EWMA_ALPHA = 0.125;
const double PREV_SPEED_KEEP_TIME_COEFF = 0.1; // 0.1 - 1 // how long will the window size stay around the previous drop level, less is longer
const int MIN_RTO = 20; // in milliseconds
const int INITIAL_RTT = 8000; // in milliseconds
const int INITIAL_RTO = 9000; // in milliseconds
@ -241,11 +243,13 @@ namespace stream
void HandleAckSendTimer (const boost::system::error_code& ecode);
void UpdatePacingTime ();
void ProcessWindowDrop ();
private:
boost::asio::io_service& m_Service;
uint32_t m_SendStreamID, m_RecvStreamID, m_SequenceNumber;
uint32_t m_DropWindowDelaySequenceNumber;
uint32_t m_TunnelsChangeSequenceNumber;
int32_t m_LastReceivedSequenceNumber;
int32_t m_PreviousReceivedSequenceNumber;
@ -276,8 +280,9 @@ namespace stream
SendBufferQueue m_SendBuffer;
double m_RTT, m_SlowRTT;
float m_WindowSize, m_LastWindowDropSize;
int m_WindowIncCounter, m_RTO, m_AckDelay, m_PrevRTTSample, m_PrevRTT, m_Jitter;
float m_WindowSize, m_LastWindowDropSize, m_WindowDropTargetSize;
int m_WindowIncCounter, m_RTO, m_AckDelay, m_PrevRTTSample;
double m_Jitter;
uint64_t m_MinPacingTime, m_PacingTime, m_PacingTimeRem, m_DropWindowDelayTime, m_LastSendTime; // microseconds
uint64_t m_LastACKSendTime, m_PacketACKInterval, m_PacketACKIntervalRem; // for limit inbound speed
int m_NumResendAttempts, m_NumPacketsToSend;