From 7fc21361663a0287123b92c9afbe229a87749e06 Mon Sep 17 00:00:00 2001
From: orignal <i2porignal@yandex.ru>
Date: Fri, 12 Jun 2026 07:52:49 -0400
Subject: [PATCH] don't consider empty tunnel message as error

---
 libi2pd/TunnelEndpoint.cpp | 26 ++++++++++++--------------
 1 file changed, 12 insertions(+), 14 deletions(-)

diff --git a/libi2pd/TunnelEndpoint.cpp b/libi2pd/TunnelEndpoint.cpp
index 66b7effa..22b62984 100644
--- a/libi2pd/TunnelEndpoint.cpp
+++ b/libi2pd/TunnelEndpoint.cpp
@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2025, The PurpleI2P Project
+* Copyright (c) 2013-2026, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -21,7 +21,7 @@ namespace i2p
 {
 namespace tunnel
 {
-	
+
 	void TunnelEndpoint::HandleDecryptedTunnelDataMsg (std::shared_ptr<I2NPMessage> msg)
 	{
 		m_NumReceivedBytes += TUNNEL_DATA_MSG_SIZE;
@@ -152,8 +152,6 @@ namespace tunnel
 				fragment += size;
 			}
 		}
-		else
-			LogPrint (eLogError, "TunnelMessage: Zero not found");
 	}
 
 	void TunnelEndpoint::HandleFollowOnFragment (uint32_t msgID, bool isLastFragment,
@@ -258,7 +256,7 @@ namespace tunnel
 	void TunnelEndpoint::AddOutOfSequenceFragment (uint32_t msgID, uint8_t fragmentNum,
 		bool isLastFragment, const uint8_t * fragment, size_t size)
 	{
-		if (!m_OutOfSequenceFragments.try_emplace ((uint64_t)msgID << 32 | fragmentNum, 
+		if (!m_OutOfSequenceFragments.try_emplace ((uint64_t)msgID << 32 | fragmentNum,
 			isLastFragment, i2p::util::GetMillisecondsSinceEpoch (), fragment, size).second)
 			LogPrint (eLogInfo, "TunnelMessage: Duplicate out-of-sequence fragment ", fragmentNum, " of message ", msgID);
 	}
@@ -297,7 +295,7 @@ namespace tunnel
 				*newMsg = *(msg.data);
 				msg.data = newMsg;
 			}
-			if (msg.data->Concat (it->second.data.data (), size) < size) // concatenate out-of-sync fragment	
+			if (msg.data->Concat (it->second.data.data (), size) < size) // concatenate out-of-sync fragment
 				LogPrint (eLogError, "TunnelMessage: Tunnel endpoint I2NP buffer overflow ", msg.data->maxLen);
 			if (it->second.isLastFragment)
 				// message complete
@@ -319,7 +317,7 @@ namespace tunnel
 		}
 		uint8_t typeID = msg.data->GetTypeID ();
 		LogPrint (eLogDebug, "TunnelMessage: Handle fragment of ", msg.data->GetLength (), " bytes, msg type ", (int)typeID);
-		
+
 		switch (msg.deliveryType)
 		{
 			case eDeliveryTypeLocal:
@@ -364,9 +362,9 @@ namespace tunnel
 	}
 
 	void TunnelEndpoint::SendMessageTo (const i2p::data::IdentHash& to, std::shared_ptr<i2p::I2NPMessage> msg)
-	{	
+	{
 		if (msg)
-		{	
+		{
 			if (!m_Sender && m_I2NPMsgs.empty ()) // first message
 				m_CurrentHash = to;
 			else if (m_CurrentHash != to) // new target router
@@ -376,21 +374,21 @@ namespace tunnel
 				m_CurrentHash = to; // set new target router
 			}	// otherwise add msg to the list for current target router
 			m_I2NPMsgs.push_back (msg);
-		}	
+		}
 	}
-	
+
 	void TunnelEndpoint::FlushI2NPMsgs ()
 	{
 		if (!m_I2NPMsgs.empty ())
 		{
 			if (!m_Sender) m_Sender = std::make_unique<TunnelTransportSender>();
 			m_Sender->SendMessagesTo (m_CurrentHash, m_I2NPMsgs); // send and clear
-		}	
-	}	
+		}
+	}
 
 	const i2p::data::IdentHash * TunnelEndpoint::GetCurrentHash () const
 	{
 		return (m_Sender || !m_I2NPMsgs.empty ()) ? &m_CurrentHash : nullptr;
-	}	
+	}
 }
 }