drop expired leasesand renew leaseset

Destination.cpp

@@ -303,7 +303,7 @@ namespace client
 				}
 				else
 				{
-					LogPrint (eLogError, "New remote LeaseSet verification failed");
+					LogPrint (eLogError, "New remote LeaseSet failed");
 					leaseSet = nullptr;
 				}
 			}	
@@ -678,7 +678,7 @@ namespace client
 		auto ts = i2p::util::GetMillisecondsSinceEpoch ();
 		for (auto it = m_RemoteLeaseSets.begin (); it != m_RemoteLeaseSets.end ();)
 		{
-			if (ts > it->second->GetExpirationTime ()) // leaseset expired
+			if (it->second->IsEmpty () || ts > it->second->GetExpirationTime ()) // leaseset expired
 			{
 				LogPrint (eLogWarning, "Destination: Remote LeaseSet ", it->second->GetIdentHash ().ToBase64 (), " expired");
 				it = m_RemoteLeaseSets.erase (it);

LeaseSet.cpp

@@ -119,6 +119,7 @@ namespace data
 
 		// process leases
 		m_ExpirationTime = 0;
+		auto ts = i2p::util::GetMillisecondsSinceEpoch ();
 		const uint8_t * leases = m_Buffer + size;
 		for (int i = 0; i < num; i++)
 		{
@@ -129,6 +130,8 @@ namespace data
 			leases += 4; // tunnel ID
 			lease.endDate = bufbe64toh (leases); 
 			leases += 8; // end date
+			if (ts < lease.endDate)
+			{	
 				if (lease.endDate > m_ExpirationTime)
 					m_ExpirationTime = lease.endDate;
 				if (m_StoreLeases)
@@ -145,6 +148,15 @@ namespace data
 					}
 				}	
 			}
+			else
+				LogPrint (eLogWarning, "LeaseSet: Lease is expired already ");
+		}	
+		if (!m_ExpirationTime)
+		{
+			LogPrint (eLogWarning, "LeaseSet: all leases are expired. Dropped");
+			m_IsValid = false;
+			return;
+		}	
 		// delete old leases	
 		if (m_StoreLeases)
 		{	
@@ -193,6 +205,7 @@ namespace data
 
 	bool LeaseSet::IsExpired () const
 	{
+		if (IsEmpty ()) return true;
 		auto ts = i2p::util::GetMillisecondsSinceEpoch ();
 		return ts > m_ExpirationTime;
 	}	

LeaseSet.h

@@ -55,6 +55,7 @@ namespace data
 			const std::vector<std::shared_ptr<Lease> > GetNonExpiredLeases (bool withThreshold = true) const;
 			bool HasExpiredLeases () const;
 			bool IsExpired () const;
+			bool IsEmpty () const { return m_Leases.empty (); };
 			uint64_t GetExpirationTime () const { return m_ExpirationTime; };
 
 			// implements RoutingDestination

Streaming.cpp

@@ -704,11 +704,11 @@ namespace stream
 
 	void Stream::UpdateCurrentRemoteLease (bool expired)
 	{
-		if (!m_RemoteLeaseSet)
+		if (!m_RemoteLeaseSet || m_RemoteLeaseSet->IsExpired ()) 
 		{
 			m_RemoteLeaseSet = m_LocalDestination.GetOwner ()->FindLeaseSet (m_RemoteIdentity->GetIdentHash ());
 			if (!m_RemoteLeaseSet)	
-				LogPrint (eLogError, "Streaming: LeaseSet ", m_RemoteIdentity->GetIdentHash ().ToBase64 (), " not found");
+				LogPrint (eLogWarning, "Streaming: LeaseSet ", m_RemoteIdentity->GetIdentHash ().ToBase64 (), " not found");
 		}
 		if (m_RemoteLeaseSet)
 		{