After diving into my http stack setup I noticed my permissions have been too restricted. After relaxing them and allowing 'others' group to read 'wikimedia' directory things seem to be working as they should. I'm not sure if that's 'proper' solution to that problem and would appreciate if anybody would come up with better idea however for the time being my issue is solved.
To finish out it might be important that even though I'm using UNIX socket I still left default port value untouched.