From 88561c22d361ccaf3330fa5f73b24154294200c4 Mon Sep 17 00:00:00 2001
From: orignal <i2porignal@yandex.ru>
Date: Thu, 9 Jun 2016 14:34:38 -0400
Subject: [PATCH] make sure ackThrough is correct

---
 Streaming.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Streaming.cpp b/Streaming.cpp
index ab0a6df0..a258eef1 100644
--- a/Streaming.cpp
+++ b/Streaming.cpp
@@ -232,6 +232,11 @@ namespace stream
 		bool acknowledged = false;
 		auto ts = i2p::util::GetMillisecondsSinceEpoch ();
 		uint32_t ackThrough = packet->GetAckThrough ();
+		if (ackThrough > m_SequenceNumber)
+		{
+			LogPrint (eLogError, "Streaming: Unexpected ackThrough=", ackThrough, " > seqn=", m_SequenceNumber);
+			return;
+		}	
 		int nackCount = packet->GetNACKCount ();
 		for (auto it = m_SentPackets.begin (); it != m_SentPackets.end ();)
 		{			
@@ -521,7 +526,7 @@ namespace stream
 		size += 4; // receiveStreamID
 		htobe32buf (packet + size, m_SequenceNumber++);
 		size += 4; // sequenceNum
-		htobe32buf (packet + size, m_LastReceivedSequenceNumber);
+		htobe32buf (packet + size, m_LastReceivedSequenceNumber >= 0 ?  m_LastReceivedSequenceNumber : 0);
 		size += 4; // ack Through
 		packet[size] = 0; 
 		size++; // NACK count