- Vmm_console/log/stats do not read multiple times
console_add loops
console_subscribe terminates (a stream of messages is sent)
log data stream loops
log_subscribe terminates (a stream of data is sent)
stat_add loops
stat_remove loops
stat_subscribe terminates (a stream of stats is sent)
terminates means: reads once more, and closes socket after second read returned
loop processes further incoming data