handle error for SessionConfrimed send

libi2pd/NTCP2.cpp

@@ -601,6 +601,14 @@ namespace transport
 	}
 
 	void NTCP2Session::HandleSessionConfirmedSent (const boost::system::error_code& ecode, std::size_t bytes_transferred)
+	{
+		(void) bytes_transferred;
+		if (ecode)
+		{
+			LogPrint (eLogWarning, "NTCP2: couldn't send SessionConfirmed message: ", ecode.message ());
+			Terminate ();
+		}
+		else
 		{	
 			LogPrint (eLogDebug, "NTCP2: SessionConfirmed sent");
 			KeyDerivationFunctionDataPhase ();
@@ -617,6 +625,7 @@ namespace transport
 			// m_SendQueue.push_back (CreateDeliveryStatusMsg (1));
 			// SendQueue ();
 		}		
+	}
 
 	void NTCP2Session::HandleSessionCreatedSent (const boost::system::error_code& ecode, std::size_t bytes_transferred)
 	{