The server is expscted at the port getPlantumlOption("server_port")
on localhost.
server_stop()
integer
or list()
as returned from server_status()
-999: unknown error
-1 : unknown server running on the port on localhost
-2 : PlantUML Web Server running on that port on localhost
0 : PicoWeb Server in the process of stopping or no server running on tat port