Mercurial > prosody-modules
view mod_throttle_presence/mod_throttle_presence.lua @ 4764:a754f7e380b2
mod_dnsupdate: Rewrite port config vs DNS comparison code
I'm not sure if it was correct, which means it was hard to understand
and thus needed to be simplified. Hope this accomplishes that.
author | Kim Alvefur <zash@zash.se> |
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date | Mon, 08 Nov 2021 23:03:14 +0100 |
parents | 552faee596b7 |
children |
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local filters = require "util.filters"; local st = require "util.stanza"; module:depends("csi"); local function presence_filter(stanza, session) if getmetatable(stanza) ~= st.stanza_mt then return stanza; -- Things we don't want to touch end if stanza._flush then stanza._flush = nil; return stanza; end local buffer = session.presence_buffer; local from = stanza.attr.from; if stanza.name == "presence" and (stanza.attr.type == nil or stanza.attr.type == "unavailable") then module:log("debug", "Buffering presence stanza from %s to %s", stanza.attr.from, session.full_jid); buffer[stanza.attr.from] = st.clone(stanza); return nil; -- Drop this stanza (we've stored it for later) else local cached_presence = buffer[stanza.attr.from]; if cached_presence then module:log("debug", "Important stanza for %s from %s, flushing presence", session.full_jid, from); stanza._flush = true; cached_presence._flush = true; session.send(cached_presence); buffer[stanza.attr.from] = nil; end end return stanza; end local function throttle_session(event) local session = event.origin; if session.presence_buffer then return; end module:log("debug", "Suppressing presence updates to %s", session.full_jid); session.presence_buffer = {}; filters.add_filter(session, "stanzas/out", presence_filter); end local function restore_session(event) local session = event.origin; if not session.presence_buffer then return; end filters.remove_filter(session, "stanzas/out", presence_filter); module:log("debug", "Flushing buffer for %s", session.full_jid); for jid, presence in pairs(session.presence_buffer) do session.send(presence); end session.presence_buffer = nil; end module:hook("csi-client-inactive", throttle_session); module:hook("csi-client-active", restore_session);