prosody-modules
22f02716819f
mod_s2s_keepalive/mod_s2s_keepalive.lua

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mod_s2s_keepalive/mod_s2s_keepalive.lua @ 3772:22f02716819f

mod_s2s_keepalive: Isolate source host of pings The incoming_s2s table is not restricted to the current virtualhost so this prevents opening more connections than what's needed. Also prevents useless double sending of one whitespace per local host.
author Kim Alvefur <zash@zash.se>
date Mon, 23 Dec 2019 01:18:02 +0100
parent 3771:98e1e3ce307d
child 3833:580862decd77
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 local st = require "util.stanza";
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2 local watchdog = require "util.watchdog";
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3
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4 local keepalive_servers = module:get_option_set("keepalive_servers");
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5 local keepalive_interval = module:get_option_number("keepalive_interval", 60);
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6 local keepalive_timeout = module:get_option_number("keepalive_timeout", 593);
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7
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8 local host = module.host;
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9 local s2sout = prosody.hosts[host].s2sout;
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11 local function send_pings()
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12 local ping_hosts = {};
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13
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14 for remote_domain, session in pairs(s2sout) do
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15 if session.type ~= "s2sout_unauthed"
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16 and (not(keepalive_servers) or keepalive_servers:contains(remote_domain)) then
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17 session.sends2s(st.iq({ to = remote_domain, type = "get", from = host, id = "keepalive" })
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18 :tag("ping", { xmlns = "urn:xmpp:ping" })
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19 );
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20 end
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21 end
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22
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23 for session in pairs(prosody.incoming_s2s) do
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24 if session.type ~= "s2sin_unauthed"
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25 and session.to_host == host
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26 and (not(keepalive_servers) or keepalive_servers:contains(session.from_host)) then
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27 if not s2sout[session.from_host] then ping_hosts[session.from_host] = true; end
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28 session.sends2s " ";
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29 -- If the connection is dead, this should make it time out.
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30 end
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31 end
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32
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33 -- ping remotes we only have s2sin from
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34 for remote_domain in pairs(ping_hosts) do
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35 module:send(st.iq({ to = remote_domain, type = "get", from = host, id = "keepalive" })
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36 :tag("ping", { xmlns = "urn:xmpp:ping" })
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37 );
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38 end
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39
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40 return keepalive_interval;
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41 end
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42
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43 module:hook("s2sin-established", function (event)
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44 local session = event.session;
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45 if session.watchdog_keepalive then return end -- in case mod_bidi fires this twice
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46 session.watchdog_keepalive = watchdog.new(keepalive_timeout, function ()
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47 session.log("info", "Keepalive ping timed out, closing connection");
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48 session:close("connection-timeout");
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49 end);
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50 end);
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51
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52 module:hook("s2sout-established", function (event)
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53 local session = event.session;
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54 if session.watchdog_keepalive then return end -- in case mod_bidi fires this twice
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55 session.watchdog_keepalive = watchdog.new(keepalive_timeout, function ()
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56 session.log("info", "Keepalive ping timed out, closing connection");
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57 session:close("connection-timeout");
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58 end);
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59 end);
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60
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61 module:hook("iq-result/host/keepalive", function (event)
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62 local origin = event.origin;
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63 if origin.watchdog_keepalive then
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64 origin.watchdog_keepalive:reset();
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65 end
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66 if s2sout[origin.from_host] and s2sout[origin.from_host].watchdog_keepalive then
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67 s2sout[origin.from_host].watchdog_keepalive:reset();
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68 end
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69 return true;
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70 end);
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71
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72 module:hook("iq-error/host/keepalive", function (event)
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73 local origin = event.origin;
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74 if origin.dummy then return end -- Probably a sendq bounce
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75
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76 if origin.type == "s2sin" or origin.type == "s2sout" then
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77 -- An error from the remote means connectivity is ok,
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78 -- so treat it the same as a result
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79 return module:fire_event("iq-result/host/keepalive", event);
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80 end
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81 end);
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82
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83 module:add_timer(keepalive_interval, send_pings);