rec: Use canonical ordering in the ECS index

The recursor's ECS index used the `DNSName`'s case insensitive
reverse lexicographical ordering (default) instead of the canonical
ordering one.
While quite faster, it isn't exactly right.

diff --git a/pdns/recursor_cache.hh b/pdns/recursor_cache.hh
index 9f53ca5724c91a432980d28f4232f1017076189d..2e40d4b8a095ac46fedcb8785e74b773bc96593a 100644 (file)
--- a/pdns/recursor_cache.hh
+++ b/pdns/recursor_cache.hh
@@ -167,7 +167,8 @@ private:
           ECSIndexEntry,
           member<ECSIndexEntry,DNSName,&ECSIndexEntry::d_qname>,
           member<ECSIndexEntry,uint16_t,&ECSIndexEntry::d_qtype>
-        >
+        >,
+        composite_key_compare<CanonDNSNameCompare, std::less<uint16_t> >
       >
     >
   > ecsIndex_t;