the service type to look up (eg, "ldap")
the networking protocol to use for service (eg, "tcp")
the DNS domain to look up the service in
a GCancellable, or NULL. [allow-none]
callback to call after resolution completes. [scope async]
data for callback. closure
Begins asynchronously performing a DNS SRV lookup for the given service and protocol in the given domain, and eventually calls callback, which must call g_resolver_lookup_service_finish() to get the final result. See g_resolver_lookup_service() for more details. Since 2.22