annotate mod_s2s_keepalive/mod_s2s_keepalive.lua @ 5627:3a5cf8d80089

mod_http_oauth2: Tweak method of centering the UI The percentage here was relative to the viewport width, which on some very wide screens may put the UI slightly outside of the view, requiring scrolling to see. By using a unit relative to the height of the viewport, this is avoided and should work better. But no guarantees, it's still possible to resize the browser or adjust font sizes so that the UI goes out of view.
author Kim Alvefur <zash@zash.se>
date Mon, 31 Jul 2023 07:28:09 +0200
parents 0e60ce83205c
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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);