remove introducer from RouterInfo after 60 minutes

libi2pd/SSU2.cpp

@@ -997,16 +997,19 @@ namespace transport
 			}
 			if (session && session->IsEstablished ())
 			{
+				if (ts < session->GetCreationTime () + SSU2_TO_INTRODUCER_SESSION_EXPIRATION)
+				{	
+					session->SendKeepAlive ();
 					if (ts < session->GetCreationTime () + SSU2_TO_INTRODUCER_SESSION_DURATION)	
 						newList.push_back (it);
 					else	
 					{	
-					if (ts < session->GetCreationTime () + SSU2_TO_INTRODUCER_SESSION_EXPIRATION)
 						impliedList.push_back (it); // keep in introducers list, but not publish
-					else
 						session = nullptr;	
 					}		
-				if (session) session->SendKeepAlive ();
+				}	
+				else
+					session = nullptr;
 			}
 			if (!session)
 				i2p::context.RemoveSSU2Introducer (it, v4);