limited connectivity mode

libi2pd/NetDb.cpp

@@ -759,7 +759,8 @@ namespace data
 	
 	void NetDb::RequestDestination (const IdentHash& destination, RequestedDestination::RequestComplete requestComplete, bool direct)
 	{
-		if (direct && i2p::transport::transports.RoutesRestricted ()) direct = false; // always use tunnels for restricted routes
+		if (direct && (i2p::transport::transports.RoutesRestricted () || i2p::context.IsLimitedConnectivity ())) 
+		    direct = false; // always use tunnels for restricted routes or limited connectivity
 		if (m_Requests)
 			m_Requests->PostRequestDestination (destination, requestComplete, direct);
 		else

libi2pd/RouterContext.h

@@ -177,6 +177,7 @@ namespace garlic
 			void SetMTU (int mtu, bool v4);
 			void SetHidden(bool hide) { m_IsHiddenMode = hide; };
 			bool IsHidden() const { return m_IsHiddenMode; };
+			bool IsLimitedConnectivity () const { return m_Status == eRouterStatusProxy; }; // TODO: implement other cases
 			i2p::crypto::NoiseSymmetricState& GetCurrentNoiseState () { return m_CurrentNoiseState; };
 
 			void UpdateNTCP2V6Address (const boost::asio::ip::address& host); // called from Daemon. TODO: remove

libi2pd/Transports.cpp

@@ -599,7 +599,7 @@ namespace transport
 			}
 
 			LogPrint (eLogInfo, "Transports: No compatible addresses available");
-			if (peer->router->IsReachableFrom (i2p::context.GetRouterInfo ()))
+			if (!i2p::context.IsLimitedConnectivity () && peer->router->IsReachableFrom (i2p::context.GetRouterInfo ()))
 				i2p::data::netdb.SetUnreachable (ident, true); // we are here because all connection attempts failed but router claimed them
 			peer->Done ();
 			std::unique_lock<std::mutex> l(m_PeersMutex);