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kappa for RTO culculation

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orignal 2022-07-31 09:45:18 -04:00
parent ff5fa1d137
commit eba4626589
2 changed files with 3 additions and 2 deletions
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4
libi2pd/SSU2Session.cpp
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@ -25,7 +25,7 @@ namespace transport
m_DestConnID (0), m_SourceConnID (0), m_State (eSSU2SessionStateUnknown),
m_SendPacketNum (0), m_ReceivePacketNum (0), m_IsDataReceived (false),
m_WindowSize (SSU2_MIN_WINDOW_SIZE), m_RTT (SSU2_RESEND_INTERVAL),
m_RTO (SSU2_RESEND_INTERVAL*1.5), m_RelayTag (0),
m_RTO (SSU2_RESEND_INTERVAL*SSU2_kAPPA), m_RelayTag (0),
m_ConnectTimer (server.GetService ()), m_TerminationReason (eSSU2TerminationReasonNormalClose),
m_MaxPayloadSize (SSU2_MIN_PACKET_SIZE - IPV6_HEADER_SIZE - UDP_HEADER_SIZE - 32) // min size
{
@ -1462,7 +1462,7 @@ namespace transport
{
auto rtt = ts - it1->second->sendTime;
m_RTT = (m_RTT*m_SendPacketNum + rtt)/(m_SendPacketNum + 1);
m_RTO = m_RTT*1.5;
m_RTO = m_RTT*SSU2_kAPPA;
if (m_RTO < SSU2_MIN_RTO) m_RTO = SSU2_MIN_RTO;
if (m_RTO > SSU2_MAX_RTO) m_RTO = SSU2_MAX_RTO;
}

1
libi2pd/SSU2Session.h
View File

@ -42,6 +42,7 @@ namespace transport
const size_t SSU2_MAX_WINDOW_SIZE = 256; // in packets
const size_t SSU2_MIN_RTO = 100; // in milliseconds
const size_t SSU2_MAX_RTO = 2500; // in milliseconds
const float SSU2_kAPPA = 1.8;
const size_t SSU2_MAX_OUTGOING_QUEUE_SIZE = 500; // in messages
const int SSU2_MAX_NUM_ACK_RANGES = 32; // to send