try to resend if window is full

libi2pd/SSU2Session.cpp

@@ -285,13 +285,18 @@ namespace transport
 			m_SendQueue.push_back (it);
 		SendQueue ();
 
-		if (m_SendQueue.size () > SSU2_MAX_OUTGOING_QUEUE_SIZE)	
+		if (m_SendQueue.size () > 0) // windows is full
+		{	
+			if (m_SendQueue.size () <= SSU2_MAX_OUTGOING_QUEUE_SIZE)
+				Resend (i2p::util::GetMillisecondsSinceEpoch ());
+			else	
 			{
 				LogPrint (eLogWarning, "SSU2: Outgoing messages queue size to ",
 					GetIdentHashBase64(), " exceeds ", SSU2_MAX_OUTGOING_QUEUE_SIZE);
 				RequestTermination (eSSU2TerminationReasonTimeout);
 			}
 		}	
+	}
 
 	bool SSU2Session::SendQueue ()
 	{
@@ -462,7 +467,6 @@ namespace transport
 			m_WindowSize >>= 1; // /2
 			if (m_WindowSize < SSU2_MIN_WINDOW_SIZE) m_WindowSize = SSU2_MIN_WINDOW_SIZE;
 		}
-		SendQueue ();
 	}
 
 	void SSU2Session::ResendHandshakePacket ()