gResolverSetDefault: gResolverSetDefault
Description
Sets resolver to be the application's default resolver (reffing
resolver, and unreffing the previous default resolver, if any).
Future calls to gResolverGetDefault will return this resolver.Usage
gResolverSetDefault(object)
Details
This can be used if an application wants to perform any sort of DNS
caching or "pinning"; it can implement its own GResolver that
calls the original default resolver for DNS operations, and
implements its own cache policies on top of that, and then set
itself as the default resolver for all later code to use.
  Since 2.22