select tunnel from TunnelPool rather than from LeaseSet for DeliveryStatus

Destination.h

@@ -88,6 +88,7 @@ namespace client
 			
 			// implements GarlicDestination
 			const i2p::data::LeaseSet * GetLeaseSet ();
+			std::shared_ptr<i2p::tunnel::TunnelPool> GetTunnelPool () const { return m_Pool; }
 			void HandleI2NPMessage (const uint8_t * buf, size_t len, std::shared_ptr<i2p::tunnel::InboundTunnel> from);
 
 			// override GarlicDestination

Garlic.cpp

@@ -297,16 +297,15 @@ namespace garlic
 		size_t size = 0;
 		if (m_Owner)
 		{
-			auto leases = m_Owner->GetLeaseSet ()->GetNonExpiredLeases ();
-			if (!leases.empty ())
+			auto inboundTunnel = m_Owner->GetTunnelPool ()->GetNextInboundTunnel ();
+			if (inboundTunnel)
 			{	
 				buf[size] = eGarlicDeliveryTypeTunnel << 5; // delivery instructions flag tunnel
 				size++;
-				uint32_t i = m_Rnd.GenerateWord32 (0, leases.size () - 1);
 				// hash and tunnelID sequence is reversed for Garlic 
-				memcpy (buf + size, leases[i].tunnelGateway, 32); // To Hash
+				memcpy (buf + size, inboundTunnel->GetNextIdentHash (), 32); // To Hash
 				size += 32;
-				htobe32buf (buf + size, leases[i].tunnelID); // tunnelID
+				htobe32buf (buf + size, inboundTunnel->GetNextTunnelID ()); // tunnelID
 				size += 4; 	
 				// create msg 
 				I2NPMessage * msg = CreateDeliveryStatusMsg (msgID);
@@ -333,7 +332,7 @@ namespace garlic
 				size += 3;
 			}
 			else	
-				LogPrint ("All tunnels of local LeaseSet expired");	
+				LogPrint (eLogError, "No inbound tunnels in the pool for DeliveryStatus");	
 		}
 		else
 			LogPrint ("Missing local LeaseSet");

Garlic.h

@@ -133,6 +133,7 @@ namespace garlic
 			virtual void SetLeaseSetUpdated ();
 			
 			virtual const i2p::data::LeaseSet * GetLeaseSet () = 0; // TODO
+			virtual std::shared_ptr<i2p::tunnel::TunnelPool> GetTunnelPool () const = 0;
 			virtual void HandleI2NPMessage (const uint8_t * buf, size_t len, std::shared_ptr<i2p::tunnel::InboundTunnel> from) = 0;
 			
 		protected:

RouterContext.cpp

@@ -289,6 +289,11 @@ namespace i2p
 		fk.write ((char *)&keys, sizeof (keys));	
 	}
 
+	std::shared_ptr<i2p::tunnel::TunnelPool> RouterContext::GetTunnelPool () const
+	{
+		return i2p::tunnel::tunnels.GetExploratoryPool (); 
+	}	
+		
 	void RouterContext::HandleI2NPMessage (const uint8_t * buf, size_t len, std::shared_ptr<i2p::tunnel::InboundTunnel> from)
 	{
 		i2p::HandleI2NPMessage (CreateI2NPMessage (buf, GetI2NPMessageLength (buf), from));

RouterContext.h

@@ -73,6 +73,7 @@ namespace i2p
 
 			// implements GarlicDestination
 			const i2p::data::LeaseSet * GetLeaseSet () { return nullptr; };
+			std::shared_ptr<i2p::tunnel::TunnelPool> GetTunnelPool () const;
 			void HandleI2NPMessage (const uint8_t * buf, size_t len, std::shared_ptr<i2p::tunnel::InboundTunnel> from);
 			
 		private: