... and it is not so easy...
Sending commands seems to be working fine, but when trying to get some info back.... 
Using rr_gcode?gcode=M408 it does not return any information. Not to curl, but it instead responds in the open browser window....
Same as in this topic.
Any way around that?
Edit: Sorry, got excited, hyperactivity kicked in, and I missed the part about rr_status?type=XXX. This should be enough 