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request choking delay if too many NACKs. Drop window size to 1 if choking delay received

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orignal 2024-04-02 18:49:16 -04:00
parent 75df8d3c7b
commit 4f1cb74f75
2 changed files with 15 additions and 3 deletions
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17
libi2pd/Streaming.cpp
View File

@ -289,6 +289,8 @@ namespace stream
m_AckSendTimer.async_wait (std::bind (&Stream::HandleAckSendTimer,
shared_from_this (), std::placeholders::_1));
}
if (delayRequested >= DELAY_CHOKING)
m_WindowSize = 1;
}
optionData += 2;
}
@ -691,6 +693,7 @@ namespace stream
htobe32buf (packet + size, lastReceivedSeqn);
size += 4; // ack Through
uint8_t numNacks = 0;
bool choking = false;
if (lastReceivedSeqn > m_LastReceivedSequenceNumber)
{
// fill NACKs
@ -703,6 +706,7 @@ namespace stream
{
LogPrint (eLogError, "Streaming: Number of NACKs exceeds 256. seqn=", seqn, " nextSeqn=", nextSeqn);
htobe32buf (packet + 12, nextSeqn - 1); // change ack Through back
choking = true;
break;
}
for (uint32_t i = nextSeqn; i < seqn; i++)
@ -724,10 +728,17 @@ namespace stream
size++; // NACK count
}
packet[size] = 0;
size++; // resend delay
htobuf16 (packet + size, 0); // no flags set
size++; // resend delay
htobuf16 (packet + size, choking ? PACKET_FLAG_DELAY_REQUESTED : 0); // no flags set or delay
size += 2; // flags
htobuf16 (packet + size, 0); // no options
if (choking)
{
htobuf16 (packet + size, 2); // 2 bytes delay interval
htobuf16 (packet + size + 2, DELAY_CHOKING); // set choking interval
size += 2;
}
else
htobuf16 (packet + size, 0); // no options
size += 2; // options size
p.len = size;

1
libi2pd/Streaming.h
View File

@ -66,6 +66,7 @@ namespace stream
const size_t MAX_PENDING_INCOMING_BACKLOG = 128;
const int PENDING_INCOMING_TIMEOUT = 10; // in seconds
const int MAX_RECEIVE_TIMEOUT = 20; // in seconds
const uint16_t DELAY_CHOKING = 60000; // in milliseconds
struct Packet
{