Software /
code /
prosody
File
plugins/mod_offline.lua @ 11741:dcf38ac6a38c
net.server: Add a predrain callaback just before writes
Allows sneaking in things in the write buffer just before it's sent to
the network stack. For example ack requests, compression flushes or
other things that make sense to send after stanzas or other things.
This ensures any additional trailing data sent is included in the same
write, and possibly the same TCP packet. Other methods used such as
timers or nextTick might not have the same effect as it depends on
scheduling.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Mon, 16 Aug 2021 12:34:52 +0200 (2021-08-16) |
parent | 10296:7072569044d4 |
child | 12977:74b9e05af71e |
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-- Prosody IM -- Copyright (C) 2008-2009 Matthew Wild -- Copyright (C) 2008-2009 Waqas Hussain -- -- This project is MIT/X11 licensed. Please see the -- COPYING file in the source package for more information. -- local datetime = require "util.datetime"; local jid_split = require "util.jid".split; local offline_messages = module:open_store("offline", "archive"); module:add_feature("msgoffline"); module:hook("message/offline/handle", function(event) local origin, stanza = event.origin, event.stanza; local to = stanza.attr.to; local node; if to then node = jid_split(to) else node = origin.username; end local ok = offline_messages:append(node, nil, stanza, os.time(), ""); if ok then module:log("debug", "Saved to offline storage: %s", stanza:top_tag()); end return ok; end, -1); module:hook("message/offline/broadcast", function(event) local origin = event.origin; origin.log("debug", "Broadcasting offline messages"); local node, host = origin.username, origin.host; local data = offline_messages:find(node); if not data then return true; end for _, stanza, when in data do stanza:tag("delay", {xmlns = "urn:xmpp:delay", from = host, stamp = datetime.datetime(when)}):up(); -- XEP-0203 origin.send(stanza); end local ok = offline_messages:delete(node); if type(ok) == "number" and ok > 0 then origin.log("debug", "%d offline messages consumed"); end return true; end, -1);