-* UTIL:
- - provide higher-level convenience API for servers/services that
- need to send a stream of notifications to clients; instead
- of having each service queue messages and "send when ready",
- simply have a way to add a client to the notification set
- and to 'notify client' or 'notify all clients'
- (useful for peerinfo (new hellos), transport (our hello; blacklist),
- core (misc monitoring features), statistics (change notifications)
- and likely others)
- - server/service API change for ARM inetd'ing
- (listen as well as support for start with multiple, already
- bound & listening sockets!)