more routine cleanup

libi2pd/SSU2.cpp

@@ -679,6 +679,22 @@ namespace transport
 					it.second->CleanUp (ts);
 			}
 
+			for (auto it = m_SessionsByRouterHash.begin (); it != m_SessionsByRouterHash.begin ();)
+			{
+				if (it->second && it->second->GetState () == eSSU2SessionStateTerminated)
+					it = m_SessionsByRouterHash.erase (it);
+				else
+					it++;
+			}		
+
+			for (auto it = m_Relays.begin (); it != m_Relays.begin ();)
+			{
+				if (it->second && it->second->GetState () == eSSU2SessionStateTerminated)
+					it = m_Relays.erase (it);
+				else
+					it++;
+			}	
+			
 			for (auto it = m_IncomingTokens.begin (); it != m_IncomingTokens.end (); )
 			{
 				if (ts > it->second.second)
@@ -695,6 +711,7 @@ namespace transport
 					it++;
 			}
 			
+			m_PacketsPool.CleanUpMt ();
 			ScheduleTermination ();
 		}
 	}

libi2pd/SSU2.h

@@ -116,7 +116,7 @@ namespace transport
 			boost::asio::ip::udp::socket m_SocketV4, m_SocketV6;
 			boost::asio::ip::address m_AddressV4, m_AddressV6;
 			std::unordered_map<uint64_t, std::shared_ptr<SSU2Session> > m_Sessions;
-			std::map<i2p::data::IdentHash, std::shared_ptr<SSU2Session> > m_SessionsByRouterHash;
+			std::unordered_map<i2p::data::IdentHash, std::shared_ptr<SSU2Session> > m_SessionsByRouterHash;
 			std::map<boost::asio::ip::udp::endpoint, std::shared_ptr<SSU2Session> > m_PendingOutgoingSessions;
 			std::map<boost::asio::ip::udp::endpoint, std::pair<uint64_t, uint32_t> > m_IncomingTokens, m_OutgoingTokens; // remote endpoint -> (token, expires in seconds)
 			std::map<uint32_t, std::shared_ptr<SSU2Session> > m_Relays; // we are introducer, relay tag -> session