annotate mod_s2s_keepalive/mod_s2s_keepalive.lua @ 1110:97e238ce37ce

mod_s2s_keepalive: Initial commit, poke s2s connections with pings and whitespace
author Kim Alvefur <zash@zash.se>
date Fri, 12 Jul 2013 01:28:48 +0200
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children 2db2c03dfb95
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97e238ce37ce mod_s2s_keepalive: Initial commit, poke s2s connections with pings and whitespace
Kim Alvefur <zash@zash.se>
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1 local st = require "util.stanza";
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2
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3 local keepalive_servers = module:get_option_set("keepalive_servers");
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4 local keepalive_interval = module:get_option_number("keepalive_interval", 60);
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5
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6 local host = module.host;
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7
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8 local function send_pings()
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9 for remote_domain, session in pairs(hosts[host].s2sout) do
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10 if session.type == "s2sout" -- as opposed to _unauthed
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11 and (not(keepalive_servers) or keepalive_servers:contains(remote_domain)) then
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12 session.sends2s(st.iq({ to = remote_domain, type = "get", from = host, id = "keepalive" })
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13 :tag("ping", { xmlns = "urn:xmpp:ping" })
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14 );
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15 -- Note: We don't actually check if this comes back.
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16 end
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17 end
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18
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19 for session in pairs(prosody.incoming_s2s) do
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20 if session.type == "s2sin" -- as opposed to _unauthed
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21 and (not(keepalive_servers) or keepalive_servers:contains(session.from_host)) then
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22 session.conn:send " ";
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23 -- If the connection is dead, this should make it time out.
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24 end
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25 end
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26 return keepalive_interval;
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27 end
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28
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29 if module.add_timer then -- 0.9
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30 module:add_timer(keepalive_interval, send_pings);
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31 else -- 0.8
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32 local timer = require "util.timer";
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33 local unloaded;
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34 timer.add_task(keepalive_interval, function()
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35 if not unloaded then
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36 return send_pings()
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37 end
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38 end);
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39 function module.unload()
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40 unloaded = true
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41 end
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42 end