mod_pubsub: Add support for limiting result size #1608

util.pubsub: Add support for limiting number of items to retrieve Hopefully this will eventually be upgraded to RSM, which is why the argument is called 'resultspec' and is a table.

mod_tls: Attempt STARTTLS on outgoing unencrypted legacy s2s connections As suggested by RFC 7590

mod_storage_internal: Stop storing XEP-0091 timestamp Should no longer be used by anything since the conversion of mod_offline to the archive API in 0.10.0, which was 4 years ago. The line clearing the property is left for a bit longer in case someone has very old offline messages or archived data.

net.server_select: Deprecate and warn about it To be removed in the future, but not right now. Give the log warning a chance to prod anyone who might have network_backend="select" in their config first. There's also things built on Verse which uses server_select.lua, which will need to be updated somehow.

net.server: Pikc server_epoll as unconditional default Previously it would have gone for server_select if util.poll was for some reason not available, which should be never these days. And even if it was, best to flush it out by throwing loud errors so users notice. Then they can work around it by using select until we delete that one.

net.server: Fall back to default backend from libevent instead of always select Fixes that selecting libevent when unavaibalbe would fall back to select instead of epoll, even if that's available. This way, we only have to update it in once place when choosing a new default.

net.server_epoll: Prevent removed timers from being readded In a case like this the timer would not be readded: addtimer(1, function(t, id) stop(id) return 1 end);

mod_mam: Suppress offline message broadcast for MAM clients MattJ on 09:34:24 > Zash: I think as a first step, offline messages should not be sent to > clients that request MAM https://chat.modernxmpp.org/log/modernxmpp/2021-08-31#2021-08-31-8518a542bd283686

mod_mam: Only check for locally generated stanza-ids Otherwise a message archived by a remote server would be incorrectly silently discarded. This should be safe from spoofing thanks to strip_stanza_id earlier in the event chain.