hanlders iterator

libi2pd_client/I2PService.cpp

@@ -67,9 +67,10 @@ namespace client
 	{
 		if(m_ConnectTimeout)
 			m_ReadyTimer.cancel();
-		std::unique_lock<std::mutex> l(m_HandlersMutex);
-		for (auto it: m_Handlers)
-			it->Terminate ();
+		IterateHandlers ([](std::shared_ptr<I2PServiceHandler> handler)
+			{
+				if (handler) handler->Terminate ();
+			});
 		m_Handlers.clear();
 	}
 

libi2pd_client/I2PService.h

@@ -74,6 +74,16 @@ namespace client
 
 			virtual const char* GetName() const { return "Generic I2P Service"; }
 
+		protected:
+
+			template<typename Callback>
+			void IterateHandlers (Callback&& callback)
+			{
+				std::unique_lock<std::mutex> l(m_HandlersMutex);
+				for (auto it: m_Handlers)
+					callback (it);
+			}
+
 		private:
 
 			void TriggerReadyCheckTimer();