don't request banned router

libi2pd/NetDb.cpp

@@ -957,8 +957,10 @@ namespace data
 				LogPrint (eLogDebug, "NetDb: Found new/outdated router. Requesting RouterInfo...");
 				if(m_FloodfillBootstrap)
 					RequestDestinationFrom(router, m_FloodfillBootstrap->GetIdentHash(), true);
-				else
+				else if (!IsRouterBanned (router))
 					RequestDestination (router);
+				else
+					LogPrint (eLogDebug, "NetDb: Router ", peerHash, " is banned. Skipped");
 			}
 			else
 				LogPrint (eLogDebug, "NetDb: [:|||:]");

libi2pd/Profiling.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2023, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -245,6 +245,15 @@ namespace data
 		return profile;
 	}
 
+	bool IsRouterBanned (const IdentHash& identHash)
+	{
+		std::unique_lock<std::mutex> l(g_ProfilesMutex);
+		auto it = g_Profiles.find (identHash);
+		if (it != g_Profiles.end ())
+			return it->second->IsUnreachable ();
+		return false;
+	}	
+		
 	void InitProfilesStorage ()
 	{
 		g_ProfilesStorage.SetPlace(i2p::fs::GetDataDir());

libi2pd/Profiling.h

@@ -87,6 +87,7 @@ namespace data
 	};
 
 	std::shared_ptr<RouterProfile> GetRouterProfile (const IdentHash& identHash);
+	bool IsRouterBanned (const IdentHash& identHash); // check only existing profiles
 	void InitProfilesStorage ();
 	void DeleteObsoleteProfiles ();
 	void SaveProfiles ();