Begins asynchronously performing a DNS SRV lookup for the given service and protocol in the given domain
, and eventually calls callback, which must call lookup_service_async.end to get the final
result.
See lookup_service for more details.
| this |
a Resolver |
| service |
the service type to look up (eg, "ldap") |
| protocol |
the networking protocol to use for |
| domain |
the DNS domain to look up the service in |
| cancellable |
a Cancellable, or null |
| callback |
callback to call after resolution completes |
| user_data |
data for |