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annotate mod_s2s_idle_timeout/mod_s2s_idle_timeout.lua @ 812:0095b74a3685

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mod_smacks: Avoid indexing a nil value
author Kim Alvefur <zash@zash.se>
date Wed, 12 Sep 2012 18:03:55 +0200
parents 6c454d7208ae
children 4e235e565693
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6c454d7208ae mod_s2s_idle_timeout: Close idle connections after s2s_idle_timeout seconds, default 300s
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1 local now = os.time;
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2
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3 local s2smanager = require "core.s2smanager";
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4 local timer = require "util.timer";
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6 local s2s_sessions = setmetatable({}, { __mode = "kv" });
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8 local idle_timeout = module:get_option("s2s_idle_timeout") or 300;
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9 local check_interval = math.ceil(idle_timeout * 0.75);
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10 local _make_authenticated = s2smanager.make_authenticated;
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11 function s2smanager.make_authenticated(session, host)
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12 if not session.last_received_time then
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13 session.last_received_time = now();
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14 if session.direction == "incoming" then
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15 local _data = session.data;
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16 function session.data(conn, data)
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17 session.last_received_time = now();
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18 return _data(conn, data);
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19 end
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20 else
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21 local _sends2s = session.sends2s;
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22 function session.sends2s(data)
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23 session.last_received_time = now();
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24 return _sends2s(data);
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25 end
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26 end
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27 s2s_sessions[session] = true;
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28 end
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29 return _make_authenticated(session, host);
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30 end
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32 function check_idle_sessions(time)
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33 time = time or now();
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34 for session in pairs(s2s_sessions) do
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35 local last_received_time = session.last_received_time;
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36 if last_received_time and time - last_received_time > idle_timeout then
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37 module:log("debug", "Closing idle connection %s->%s",
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38 session.from_host or "(unknown)", session.to_host or "(unknown)");
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39 session:close(); -- Close-on-idle isn't an error
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40 s2s_sessions[session] = nil;
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41 end
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42 end
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43 return check_interval;
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44 end
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45 timer.add_task(check_interval, check_idle_sessions);
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47 function module.save()
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48 return { s2s_sessions = s2s_sessions };
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49 end
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51 function module.restore(data)
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52 s2s_sessions = setmetatable(data.s2s_sessions or {}, { __mode = "kv" });
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53 end