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send immediate ack request if no packet being sent

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orignal 2024-09-09 18:40:06 -04:00
parent cd648b9b3f
commit 07d108bb6f
2 changed files with 13 additions and 5 deletions
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11
libi2pd/Streaming.cpp
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@ -877,13 +877,18 @@ namespace stream
}
packet[size] = 0;
size++; // resend delay
htobuf16 (packet + size, choking ? PACKET_FLAG_DELAY_REQUESTED : 0); // no flags set or delay
bool requestImmediateAck = false;
if (!choking)
requestImmediateAck = m_LastSendTime && ts > m_LastSendTime + REQUEST_IMMEDIATE_ACK_INTERVAL &&
ts > m_LastSendTime + REQUEST_IMMEDIATE_ACK_INTERVAL + m_LocalDestination.GetRandom () % REQUEST_IMMEDIATE_ACK_INTERVAL_VARIANCE;
htobuf16 (packet + size, (choking || requestImmediateAck) ? PACKET_FLAG_DELAY_REQUESTED : 0); // no flags set or delay requested
size += 2; // flags
if (choking)
if (choking || requestImmediateAck)
{
htobuf16 (packet + size, 2); // 2 bytes delay interval
htobuf16 (packet + size + 2, DELAY_CHOKING); // set choking interval
htobuf16 (packet + size + 2, choking ? DELAY_CHOKING : 0); // set choking or immediated ack interval
size += 2;
if (requestImmediateAck) m_LastSendTime = ts; // ack request sent
}
else
htobuf16 (packet + size, 0); // no options

5
libi2pd/Streaming.h
View File

@ -70,6 +70,8 @@ namespace stream
const int MAX_RECEIVE_TIMEOUT = 20; // in seconds
const uint16_t DELAY_CHOKING = 60000; // in milliseconds
const uint64_t SEND_INTERVAL = 1000; // in microseconds
const uint64_t REQUEST_IMMEDIATE_ACK_INTERVAL = 7500; // in milliseconds
const uint64_t REQUEST_IMMEDIATE_ACK_INTERVAL_VARIANCE = 3200; // in milliseconds
struct Packet
{
@ -283,7 +285,8 @@ namespace stream
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_LastSendTime; // microseconds
uint64_t m_MinPacingTime, m_PacingTime, m_PacingTimeRem, // microseconds
m_LastSendTime; // miliseconds
uint64_t m_LastACKSendTime, m_PacketACKInterval, m_PacketACKIntervalRem; // for limit inbound speed
int m_NumResendAttempts, m_NumPacketsToSend;
size_t m_MTU;