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
a non-empty #GList of #GSrvTarget, or %NULL on error. You must free each of the targets and the list when you are done with it. (You can use g_resolver_free_targets() to do this.)
GException on failure.
2.22
Synchronously performs a DNS SRV lookup for the given @service and @protocol in the given @domain and returns an array of #GSrvTarget. @domain may be an ASCII-only or UTF-8 hostname. Note also that the @service and @protocol arguments do not include the leading underscore that appears in the actual DNS entry.
On success, g_resolver_lookup_service() will return a non-empty #GList of #GSrvTarget, sorted in order of preference. (That is, you should attempt to connect to the first target first, then the second if the first fails, etc.)
If the DNS resolution fails, @error (if non-%NULL) will be set to a value from #GResolverError and %NULL will be returned.
If @cancellable is non-%NULL, it can be used to cancel the operation, in which case @error (if non-%NULL) will be set to %G_IO_ERROR_CANCELLED.
If you are planning to connect to the service, it is usually easier to create a #GNetworkService and use its #GSocketConnectable interface.