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recalculate RTT for one way communications

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orignal 2024-09-10 12:22:42 -04:00
parent a65dd218da
commit 261acbbd66
2 changed files with 17 additions and 4 deletions
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18
libi2pd/Streaming.cpp
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@ -73,7 +73,7 @@ namespace stream
m_LastConfirmedReceivedSequenceNumber (0), // for limit inbound speed
m_Status (eStreamStatusNew), m_IsAckSendScheduled (false), m_IsNAcked (false), m_IsFirstACK (false),
m_IsResendNeeded (false), m_IsFirstRttSample (false), m_IsSendTime (true), m_IsWinDropped (false),
m_IsTimeOutResend (false), m_LocalDestination (local),
m_IsTimeOutResend (false), m_IsImmediateAckRequested (false), m_LocalDestination (local),
m_RemoteLeaseSet (remote), m_ReceiveTimer (m_Service), m_SendTimer (m_Service), m_ResendTimer (m_Service),
m_AckSendTimer (m_Service), m_NumSentBytes (0), m_NumReceivedBytes (0), m_Port (port),
m_RTT (INITIAL_RTT), m_SlowRTT (INITIAL_RTT), m_WindowSize (INITIAL_WINDOW_SIZE), m_LastWindowDropSize (0),
@ -101,7 +101,7 @@ namespace stream
m_LastConfirmedReceivedSequenceNumber (0), // for limit inbound speed
m_Status (eStreamStatusNew), m_IsAckSendScheduled (false), m_IsNAcked (false), m_IsFirstACK (false),
m_IsResendNeeded (false), m_IsFirstRttSample (false), m_IsSendTime (true), m_IsWinDropped (false),
m_IsTimeOutResend (false), m_LocalDestination (local),
m_IsTimeOutResend (false), m_IsImmediateAckRequested (false), m_LocalDestination (local),
m_ReceiveTimer (m_Service), m_SendTimer (m_Service), m_ResendTimer (m_Service), m_AckSendTimer (m_Service),
m_NumSentBytes (0), m_NumReceivedBytes (0), m_Port (0), m_RTT (INITIAL_RTT), m_SlowRTT (INITIAL_RTT),
m_WindowSize (INITIAL_WINDOW_SIZE), m_LastWindowDropSize (0), m_WindowDropTargetSize (0), m_WindowIncCounter (0),
@ -192,7 +192,15 @@ namespace stream
ProcessOptions (flags, packet);
else
// plain ack
{
LogPrint (eLogDebug, "Streaming: Plain ACK received");
if (m_IsImmediateAckRequested)
{
auto ts = i2p::util::GetMillisecondsSinceEpoch ();
m_RTT = (m_RTT + (ts - m_LastSendTime)) / 2;
m_IsImmediateAckRequested = false;
}
}
m_LocalDestination.DeletePacket (packet);
return;
}
@ -893,7 +901,11 @@ namespace stream
htobe16buf (packet + size, 2); // 2 bytes delay interval
htobe16buf (packet + size + 2, choking ? DELAY_CHOKING : 0); // set choking or immediated ack interval
size += 2;
if (requestImmediateAck) m_LastSendTime = ts; // ack request sent
if (requestImmediateAck) // ack request sent
{
m_LastSendTime = ts;
m_IsImmediateAckRequested = true;
}
}
else
htobuf16 (packet + size, 0); // no options

1
libi2pd/Streaming.h
View File

@ -265,6 +265,7 @@ namespace stream
bool m_IsSendTime;
bool m_IsWinDropped;
bool m_IsTimeOutResend;
bool m_IsImmediateAckRequested;
StreamingDestination& m_LocalDestination;
std::shared_ptr<const i2p::data::IdentityEx> m_RemoteIdentity;
std::shared_ptr<const i2p::crypto::Verifier> m_TransientVerifier; // in case of offline key