How to make PROPFIND request?

Sep 16, 2013 at 8:36 PM
I'm working with Yandex.Disk using DAV. I need to make PROPFIND request to the service ( to check how much free space is left. How can I do this?
I can't find any methods for PROPFIND or any other WebDav requests.
Here is Yandex documentation related to their service:
And here is the free and used space function:
Thank you in advance!