annotate mod_s2s_keepalive/mod_s2s_keepalive.lua @ 4813:0a257d1402c3

mod_muc_rtbl: Optimize case with zero hashes On the assumption that during quiet times between torrents of spam, the hash set would be empty. There would be no point in doing the operations and hashes to check for a match in that case.
author Kim Alvefur <zash@zash.se>
date Mon, 06 Dec 2021 18:19:19 +0100
parents 0e60ce83205c
children
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 local dt = require "util.datetime";
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5 local keepalive_servers = module:get_option_set("keepalive_servers");
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6 local keepalive_interval = module:get_option_number("keepalive_interval", 60);
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7 local keepalive_timeout = module:get_option_number("keepalive_timeout", 593);
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9 local host = module.host;
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10 local s2sout = prosody.hosts[host].s2sout;
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12 local function send_pings()
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13 local ping_hosts = {};
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14
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15 for remote_domain, session in pairs(s2sout) do
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16 if session.type ~= "s2sout_unauthed"
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17 and (not(keepalive_servers) or keepalive_servers:contains(remote_domain)) then
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18 session.sends2s(st.iq({ to = remote_domain, type = "get", from = host, id = "keepalive:"..dt.datetime()})
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19 :tag("ping", { xmlns = "urn:xmpp:ping" })
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20 );
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21 end
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22 end
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24 for session in pairs(prosody.incoming_s2s) do
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25 if session.type ~= "s2sin_unauthed"
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26 and not session.notopen
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27 and session.to_host == host
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28 and (not(keepalive_servers) or keepalive_servers:contains(session.from_host)) then
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29 if not s2sout[session.from_host] then ping_hosts[session.from_host] = true; end
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30 session.sends2s " ";
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31 -- If the connection is dead, this should make it time out.
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32 end
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33 end
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34
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35 -- ping remotes we only have s2sin from
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36 for remote_domain in pairs(ping_hosts) do
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37 module:send(st.iq({ to = remote_domain, type = "get", from = host, id = "keepalive:"..dt.datetime() })
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38 :tag("ping", { xmlns = "urn:xmpp:ping" })
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39 );
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40 end
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41
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42 return keepalive_interval;
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43 end
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44
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45 module:hook("s2sin-established", function (event)
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46 local session = event.session;
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47 if session.watchdog_keepalive then return end -- in case mod_bidi fires this twice
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48 if keepalive_servers and not keepalive_servers:contains(session.from_host) then return end
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49 session.watchdog_keepalive = watchdog.new(keepalive_timeout, function ()
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50 session.log("info", "Keepalive ping timed out, closing connection");
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51 session:close("connection-timeout");
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52 end);
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53 end);
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54
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55 module:hook("s2sout-established", function (event)
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56 local session = event.session;
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57 if session.watchdog_keepalive then return end -- in case mod_bidi fires this twice
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58 if keepalive_servers and not keepalive_servers:contains(session.from_host) then return end
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59 session.watchdog_keepalive = watchdog.new(keepalive_timeout, function ()
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60 session.log("info", "Keepalive ping timed out, closing connection");
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61 session:close("connection-timeout");
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62 end);
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63 end);
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64
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65 module:hook("iq/host", function (event)
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66 local stanza = event.stanza;
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67 if stanza.attr.type ~= "result" and stanza.attr.type ~= "error" then
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68 return -- not a reply iq stanza
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69 end
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70 if not (stanza.attr.id and stanza.attr.id:sub(1, #"keepalive:") == "keepalive:") then
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71 return -- not a reply to this module
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72 end
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73 if stanza.attr.type == "error" then
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74 local err = stanza:get_child("error");
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75 local err_by = err and err.attr.by;
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76 if err_by and prosody.hosts[err_by] then
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77 return -- error produced by the local host
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78 end
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79 end
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80
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81 local origin = event.origin;
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82 if origin.dummy then return end -- Probably a sendq bounce
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83 if origin.watchdog_keepalive then
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84 origin.log("debug", "Resetting keepalive watchdog")
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85 origin.watchdog_keepalive:reset();
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86 end
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87 if s2sout[origin.from_host] and s2sout[origin.from_host].watchdog_keepalive then
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88 s2sout[origin.from_host].watchdog_keepalive:reset();
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89 end
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90 return true;
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91 end);
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92
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93 module:add_timer(keepalive_interval, send_pings);