mod_pubsub_serverinfo: Treat public providers as public The opt-in mechanism is to prevent leaking domain names or relationships between small private servers. These are not considerations relevant to public servers. We use the providers.xmpp.net API to fetch a list of known public provider domains.

mod_pubsub_serverinfo: Allow configuration of node persistence/deletion

mod_pubsub_serverinfo: Add explicit xmlns to all pubsub tags This helps when routing between hosts on the same server, where the namespace normalization is not handled by default.

mod_pubsub_serverinfo: Remove unused variable declaration

mod_pubsub_serverinfo: Some logging improvements

mod_pubsub_serverinfo: Refresh cache entries if they will expire before next run

mod_pubsub_serverinfo: Add node on compatibility

mod_pubsub_serverinfo: Warm-up opt-in cache By warming up the cache that contains the opt-in data, the first publication has a better chance of including domain names for remote domains that opt-in. Without this change, those domains are named only after the _second_ publication, which can take a while. New users are likely thrown off by that.

mod_pubsub_serverinfo: Fix namespace parsing issue with disco/info Prosody's API works based on attribute definitions, without using namespace scopes.

mod_pubsub_serverinfo: Consider sibling vhosts 'connected' Prosody does not have s2s connections between vhosts. Multiple domains will therefor not show up as each-other 'remote domains'. With this commit, the module considers vhosts permanently s2s-connected. Additional debug logging has been added.