prefetch_dns

Description:

[ Version ( since = "2.38" ) ]
public void prefetch_dns (string hostname, Cancellable? cancellable, AddressCallback? callback)

Tells this that an URI from the given hostname may be requested shortly, and so the session can try to prepare by resolving the domain name in advance, in order to work more quickly once the URI is actually requested.

If cancellable is non-%NULL, it can be used to cancel the resolution. callback will still be invoked in this case, with a status of CANCELLED.

Parameters:

this	a Session
hostname	a hostname to be resolved
cancellable	a Cancellable object, or `null`
callback	callback to call with the result, or `null`
user_data	data for `callback`