doesn't store leases in netdb

Destination.cpp

@@ -187,16 +187,17 @@ namespace client
 		auto it = m_RemoteLeaseSets.find (ident);
 		if (it != m_RemoteLeaseSets.end ())
 		{	
-			if (it->second->HasNonExpiredLeases ())
+			if (!it->second->IsExpired ())
 				return it->second;
 			else
-				LogPrint (eLogWarning, "Destination: All leases of remote LeaseSet expired");
+				LogPrint (eLogWarning, "Destination: remote LeaseSet expired");
 		}	
 		else
 		{	
 			auto ls = i2p::data::netdb.FindLeaseSet (ident);
 			if (ls)
 			{
+				ls->PopulateLeases (); // since we don't store them in netdb
 				m_RemoteLeaseSets[ident] = ls;			
 				return ls;
 			}	
@@ -674,9 +675,10 @@ namespace client
 
 	void ClientDestination::CleanupRemoteLeaseSets ()
 	{
+		auto ts = i2p::util::GetMillisecondsSinceEpoch ();
 		for (auto it = m_RemoteLeaseSets.begin (); it != m_RemoteLeaseSets.end ();)
 		{
-			if (!it->second->HasNonExpiredLeases ()) // all leases expired
+			if (ts > it->second->GetExpirationTime ()) // leaseset expired
 			{
 				LogPrint (eLogWarning, "Destination: Remote LeaseSet ", it->second->GetIdentHash ().ToBase64 (), " expired");
 				it = m_RemoteLeaseSets.erase (it);

Destination.h

@@ -72,7 +72,7 @@ namespace client
 			bool IsRunning () const { return m_IsRunning; };
 			boost::asio::io_service& GetService () { return m_Service; };
 			std::shared_ptr<i2p::tunnel::TunnelPool> GetTunnelPool () { return m_Pool; }; 
-			bool IsReady () const { return m_LeaseSet && m_LeaseSet->HasNonExpiredLeases () && m_Pool->GetOutboundTunnels ().size () > 0; };
+			bool IsReady () const { return m_LeaseSet && !m_LeaseSet->IsExpired () && m_Pool->GetOutboundTunnels ().size () > 0; };
 			std::shared_ptr<const i2p::data::LeaseSet> FindLeaseSet (const i2p::data::IdentHash& ident);
 			bool RequestDestination (const i2p::data::IdentHash& dest, RequestComplete requestComplete = nullptr);
 			void CancelDestinationRequest (const i2p::data::IdentHash& dest);	

HTTPServer.cpp

@@ -793,7 +793,7 @@ namespace util
 		}		
 
 		auto leaseSet = i2p::client::context.GetSharedLocalDestination ()->FindLeaseSet (destination);
-		if (leaseSet && leaseSet->HasNonExpiredLeases ())
+		if (leaseSet && !leaseSet->IsExpired ())
 			SendToDestination (leaseSet, port, buf, len);
 		else
 		{
@@ -812,7 +812,7 @@ namespace util
 		if (ecode != boost::asio::error::operation_aborted)
 		{	
 			auto leaseSet = i2p::client::context.GetSharedLocalDestination ()->FindLeaseSet (destination);
-			if (leaseSet && leaseSet->HasNonExpiredLeases ())
+			if (leaseSet && !leaseSet->IsExpired ())
 				SendToDestination (leaseSet, port, buf, len);
 			else
 				// still no LeaseSet

LeaseSet.cpp

@@ -12,8 +12,8 @@ namespace i2p
 namespace data
 {
 	
-	LeaseSet::LeaseSet (const uint8_t * buf, size_t len):
-		m_IsValid (true)
+	LeaseSet::LeaseSet (const uint8_t * buf, size_t len, bool storeLeases):
+		m_IsValid (true), m_StoreLeases (storeLeases), m_ExpirationTime (0)
 	{
 		m_Buffer = new uint8_t[len];
 		memcpy (m_Buffer, buf, len);
@@ -22,7 +22,7 @@ namespace data
 	}
 
 	LeaseSet::LeaseSet (std::shared_ptr<const i2p::tunnel::TunnelPool> pool):
-		m_IsValid (true)
+		m_IsValid (true), m_StoreLeases (true), m_ExpirationTime (0)
 	{	
 		if (!pool) return;
 		// header
@@ -55,6 +55,7 @@ namespace data
 			uint64_t ts = it->GetCreationTime () + i2p::tunnel::TUNNEL_EXPIRATION_TIMEOUT - i2p::tunnel::TUNNEL_EXPIRATION_THRESHOLD; // 1 minute before expiration
 			ts *= 1000; // in milliseconds
 			ts += rand () % 6; // + random milliseconds 0-5
+			if (ts > m_ExpirationTime) m_ExpirationTime = ts;
 			htobe64buf (m_Buffer + m_BufferLen, ts);
 			m_BufferLen += 8; // end date
 		}
@@ -79,7 +80,14 @@ namespace data
 		m_BufferLen = len;
 		ReadFromBuffer (false);
 	}
-	
+
+	void LeaseSet::PopulateLeases ()
+	{
+		m_StoreLeases = true;
+		m_Leases.clear ();
+		ReadFromBuffer (false);
+	}	
+		
 	void LeaseSet::ReadFromBuffer (bool readIdentity)	
 	{	
 		if (readIdentity || !m_Identity)
@@ -105,6 +113,7 @@ namespace data
 		}	
 
 		// process leases
+		m_ExpirationTime = 0;
 		const uint8_t * leases = m_Buffer + size;
 		for (int i = 0; i < num; i++)
 		{
@@ -113,16 +122,20 @@ namespace data
 			leases += 32; // gateway
 			lease.tunnelID = bufbe32toh (leases);
 			leases += 4; // tunnel ID
-			lease.endDate = bufbe64toh (leases);
+			lease.endDate = bufbe64toh (leases); 
 			leases += 8; // end date
-			m_Leases.push_back (lease);
-
-			// check if lease's gateway is in our netDb
-			if (!netdb.FindRouter (lease.tunnelGateway))
-			{
-				// if not found request it
-				LogPrint (eLogInfo, "LeaseSet: Lease's tunnel gateway not found, requesting");
-				netdb.RequestDestination (lease.tunnelGateway);
+			if (lease.endDate > m_ExpirationTime)
+				m_ExpirationTime = lease.endDate;
+			if (m_StoreLeases)
+			{	
+				m_Leases.push_back (lease);
+				// check if lease's gateway is in our netDb
+				if (!netdb.FindRouter (lease.tunnelGateway))
+				{
+					// if not found request it
+					LogPrint (eLogInfo, "LeaseSet: Lease's tunnel gateway not found, requesting");
+					netdb.RequestDestination (lease.tunnelGateway);
+				}
 			}	
 		}	
 		
@@ -150,19 +163,17 @@ namespace data
 	}	
 
 	bool LeaseSet::HasExpiredLeases () const
-	{
+ 	{
 		auto ts = i2p::util::GetMillisecondsSinceEpoch ();
 		for (auto& it: m_Leases)
 			if (ts >= it.endDate) return true;
 		return false;
-	}	
+ 	}	
 
-	bool LeaseSet::HasNonExpiredLeases () const
+	bool LeaseSet::IsExpired () const
 	{
 		auto ts = i2p::util::GetMillisecondsSinceEpoch ();
-		for (auto& it: m_Leases)
-			if (ts < it.endDate) return true;
-		return false;
+		return ts > m_ExpirationTime;
 	}	
 }		
 }	

LeaseSet.h

@@ -37,10 +37,11 @@ namespace data
 	{
 		public:
 
-			LeaseSet (const uint8_t * buf, size_t len);
+			LeaseSet (const uint8_t * buf, size_t len, bool storeLeases = true);
 			LeaseSet (std::shared_ptr<const i2p::tunnel::TunnelPool> pool);
 			~LeaseSet () { delete[] m_Buffer; };
 			void Update (const uint8_t * buf, size_t len);
+			void PopulateLeases (); /// from buffer
 			std::shared_ptr<const IdentityEx> GetIdentity () const { return m_Identity; };			
 
 			const uint8_t * GetBuffer () const { return m_Buffer; };
@@ -52,7 +53,8 @@ namespace data
 			const std::vector<Lease>& GetLeases () const { return m_Leases; };
 			const std::vector<Lease> GetNonExpiredLeases (bool withThreshold = true) const;
 			bool HasExpiredLeases () const;
-			bool HasNonExpiredLeases () const;
+			bool IsExpired () const;
+			uint64_t GetExpirationTime () const { return m_ExpirationTime; };
 			const uint8_t * GetEncryptionPublicKey () const { return m_EncryptionKey; };
 			bool IsDestination () const { return true; };
 
@@ -62,8 +64,9 @@ namespace data
 			
 		private:
 
-			bool m_IsValid;
+			bool m_IsValid, m_StoreLeases; // we don't need to store leases for floodfill
 			std::vector<Lease> m_Leases;
+			uint64_t m_ExpirationTime; // in milliseconds
 			std::shared_ptr<const IdentityEx> m_Identity;
 			uint8_t m_EncryptionKey[256];
 			uint8_t * m_Buffer;

NetDb.cpp

@@ -206,7 +206,7 @@ namespace data
 			}
 			else
 			{	
-				auto leaseSet = std::make_shared<LeaseSet> (buf, len);
+				auto leaseSet = std::make_shared<LeaseSet> (buf, len, false); // we don't need leases in netdb 
 				if (leaseSet->IsValid ())
 				{
 					LogPrint (eLogInfo, "NetDb: LeaseSet added: ", ident.ToBase64());
@@ -981,9 +981,10 @@ namespace data
 	
 	void NetDb::ManageLeaseSets ()
 	{
+		auto ts = i2p::util::GetMillisecondsSinceEpoch ();
 		for (auto it = m_LeaseSets.begin (); it != m_LeaseSets.end ();)
 		{
-			if (!it->second->HasNonExpiredLeases ()) // all leases expired
+			if (ts > it->second->GetExpirationTime ()) 
 			{
 				LogPrint (eLogWarning, "NetDb: LeaseSet ", it->second->GetIdentHash ().ToBase64 (), " expired");
 				it = m_LeaseSets.erase (it);