creating #2
awaiting callback 2
r 2 here
awaiting callback 3
r 2 ready
creating #3
r 3 here
got callback 3
r 3 ready
creating #4
r 4 here
nothing here
r 4 ready
hello 2 :  call
hello 3 :  call
hello 4 :  send
hello 2 :  cocall
hello 3 :  cocall
hello 4 :  cocall
hello 2 :  cosend
hello 3 :  cosend
hello 4 :  cosend
Scheduler ready
Client requests to enter a server
got request
awaiting go_ahead