annotate mod_throttle_presence/mod_throttle_presence.lua @ 737:e4ea03b060ed

mod_archive: switch from/to The XEP-0136 is not very explicit about the meening of <from> and <to> elements, but the examples are clear: <from> means it comes from the user in the 'with' attribute of the collection. That is the opposite of what is currently implemented in that module. So for better compatibility with complient clients, this switch the 'from' and 'to' fields
author Olivier Goffart <ogoffart@woboq.com>
date Wed, 04 Jul 2012 14:08:43 +0200
parents fe9c4daee076
children d8c50448d0e7
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fe9c4daee076 mod_throttle_presence: Buffer up presence for up to flush_presence_seconds and send latest presence stanzas for each contact at once
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1 local add_filter = require "util.filters".add_filter;
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2 local add_task = require "util.timer".add_task;
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4 local buffer_seconds = module:get_option_number("flush_presence_seconds");
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6 local function throttle_session(data)
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7 local session = data.session;
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8 local buffer, flushing = {}, false;
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9 local timer_active = false;
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10 local function flush_buffer()
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11 module:log("debug", "Flushing buffer for %s", session.full_jid);
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12 flushing = true;
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13 for jid, presence in pairs(buffer) do
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14 session.send(presence);
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15 end
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16 flushing = false;
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17 end
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18 local function throttle_presence(stanza)
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19 if stanza.name ~= "presence" or (stanza.attr.type and stanza.attr.type ~= "unavailable") then
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20 module:log("debug", "Non-presence stanza for %s: %s", session.full_jid, tostring(stanza));
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21 flush_buffer();
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22 elseif not flushing then
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23 module:log("debug", "Buffering presence stanza from %s to %s", stanza.attr.from, session.full_jid);
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24 buffer[stanza.attr.from] = stanza;
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25 if not timer_active and buffer_seconds then
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26 timer_active = true;
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27 add_task(buffer_seconds, flush_buffer);
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28 end
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29 return nil; -- Drop this stanza (we've stored it for later)
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30 end
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31 return stanza;
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32 end
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33 add_filter(session, "stanzas/out", throttle_presence);
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34 end
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37 module:hook("resource-bind", throttle_session);