Two legged oauth autentication to access and "xoauth_requestor_id"

[sinan]

Is it possible to use the 2 legged oauth with "xoauth_requestor_id?mysubdo...@mysubdomain.com"  to access Calendar , Contacts and Document  for example of the users in a subdomain??

Right now i receive that error: 

No authentication header information

Authentication error: Unable to respond to any of these challenges: {}