This is the same as webdav_discover_sources, it only allows to provide a callback function (with its user_data), to reference an additional Source.
It's good to avoid creating its own SourceRegistry instance to get it.
When the operation is finished, callback will be called. You can then call
webdav_discover_sources.end to get the result of the operation.
| url_use_path |
optional URL override, or null |
| only_supports |
bit-or of EWebDAVDiscoverSupports, to limit what type of sources to search |
| credentials |
credentials to use for authentication to the server |
| ref_source_func |
optional callback to use to get an ESource |
| cancellable |
optional Cancellable object, or null |
| callback |
a TaskReadyCallback to call when the request is satisfied |
| ref_source_func_user_data |
user data for |
| source |
an Source from which to take connection details |
| user_data |
data to pass to the callback function |