net.server_epoll: Add support for systemd socket activation
Allows creating listening sockets and accepting client connections
before Prosody starts.
This is unlike normal Prosody dynamic resource management, where ports
may added and removed at any time, and the ports defined by the config.
Weird things happen if these are closed (e.g. due to reload) so here we
prevent closing and ensure sockets are reused when opened again.
No 'to' attribute:
IQ: Pass to appropriate handler
Presence: Broadcast to contacts
- if initial presence, also send out presence probes
- if probe would be to local user, generate presence stanza for them
Message: Route as if it is addressed to the bare JID of the sender
To a local host:
IQ: Pass to appropriate handler
Presence: -
Message: Deliver to admin?
To local contact:
Bare JID:
IQ: Pass to appropriate handler
Presence: Broadcast to all resources
Message: Route to 'best' resource
Full JID:
IQ: Send to resource
Presence: Send to resource
Message: Send to resource
Full JID but resource not connected:
IQ: Return service-unavailable
Message: Handle same as if to bare JID
Presence: Drop (unless type=subscribe[ed])
To remote contact:
Initiate s2s connection if necessary
Send stanza across