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/**
* Overview of uHub
*/
digraph G
{
"main()" -> "event_dispatch()"
"event_dispatch()" -> "net_on_accept()"
"event_dispatch()" -> "net_on_read()"
"event_dispatch()" -> "net_on_write()"
"event_dispatch()" -> "event_queue_process()"
/* net events */
"net_on_write()" -> "net_send()"
"net_on_write()" -> "user_disconnect()"
"net_on_accept()" -> "user_create()"
"net_on_read()" -> "net_recv()"
"net_on_read()" -> "user_disconnect()"
"net_recv()" -> "hub_handle_message()"
/* adc message handling */
"hub_handle_message()" -> "hub_handle_password()"
"hub_handle_message()" -> "hub_handle_support()"
"hub_handle_password()" -> "user_disconnect()"
"hub_handle_support()" -> "user_disconnect()"
"hub_handle_password()" -> "route_to_user()"
"hub_handle_support()" -> "route_to_user()"
"hub_handle_message()" -> "hub_handle_info()"
"hub_handle_message()" -> "route_message()"
"hub_handle_info()" -> "route_to_user()"
"hub_handle_info()" -> "route_to_all()"
/* message routing, depending on message type */
"route_message()" -> "route_to_user()"
"route_message()" -> "route_to_all()" -> "route_to_user()"
"route_message()" -> "route_to_subscribers()" -> "route_to_user()"
"route_to_user()" -> "net_send()"
"route_to_user()" -> "queue_command()"
"route_to_user()" -> "user_disconnect()"
/* Message dispatcher */
"event_queue_process()" -> "hub_event_dispatcher()"
"hub_event_dispatcher()" -> "EVENT_USER_JOIN"
"hub_event_dispatcher()" -> "EVENT_USER_QUIT"
"EVENT_USER_QUIT" -> "route_to_all()"
"EVENT_USER_QUIT" -> "user_destroy()"
"EVENT_USER_JOIN" -> "route_to_all()"
/* user_disconnect() -- critical part */
"user_disconnect()" -> "user_set_state(state_cleanup)" -> "post: EVENT_USER_QUIT"
"user_disconnect()" -> "user_destroy()"
}
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