From 2182a0add52ffc93713ae78d38a200fa320c87a5 Mon Sep 17 00:00:00 2001
From: orignal <i2porignal@yandex.ru>
Date: Sun, 9 Aug 2026 15:02:21 -0400
Subject: [PATCH] fixed possible overflow with negative value

---
 libi2pd/Streaming.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libi2pd/Streaming.cpp b/libi2pd/Streaming.cpp
index b7084596..4fb55163 100644
--- a/libi2pd/Streaming.cpp
+++ b/libi2pd/Streaming.cpp
@@ -1178,7 +1178,7 @@ namespace stream
 		int64_t passedTime = m_PacketACKInterval * INITIAL_WINDOW_SIZE; // in microseconds // while m_LastACKSendTime == 0
 		if (m_LastACKSendTime)
 			passedTime = (ts - m_LastACKSendTime)*1000; // in microseconds
-		numPackets = (passedTime + m_PacketACKIntervalRem) / m_PacketACKInterval;
+		numPackets = (passedTime + (int64_t)m_PacketACKIntervalRem) / (int64_t)m_PacketACKInterval;
 		int64_t delta = numPackets * (int64_t)m_PacketACKInterval - passedTime;
 		if (delta < (int64_t)m_PacketACKIntervalRem)
 			m_PacketACKIntervalRem -= delta;