Annotate

mod_smacks/mod_smacks.lua @ 1599:8e006226e4c5

mod_smacks: Don't attach timestamps to 'iq' stanzas
author Kim Alvefur <zash@zash.se>
date Mon, 26 Jan 2015 15:54:18 +0100
parent 1598:043d08448d87
child 1637:ad6694f7b13c
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 uuid_generate = require "util.uuid".generate;
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4 local t_insert, t_remove = table.insert, table.remove;
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5 local math_min = math.min;
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6 local os_time = os.time;
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7 local tonumber, tostring = tonumber, tostring;
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bc24f58a0d39 mod_smacks: Use filters for catching incoming stanzas (more reliable and efficient), also add some logic to make compatible with the stream resumption module (coming soon)
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8 local add_filter = require "util.filters".add_filter;
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08fa42e1ab06 mod_smacks: Fixes for monkey-patched sessionmanager.destroy to handle stream resumption, and to fall back to stock destroy() if the session is not smacks-enabled.
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9 local timer = require "util.timer";
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db2a40cbd6ef Add a <delay> to stanzas that are queued (and don't have one already), so clients can show them with the original timestamp.
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10 local datetime = require "util.datetime";
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11
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12 local xmlns_sm2 = "urn:xmpp:sm:2";
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13 local xmlns_sm3 = "urn:xmpp:sm:3";
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parents: 263
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14 local xmlns_errors = "urn:ietf:params:xml:ns:xmpp-stanzas";
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15 local xmlns_delay = "urn:xmpp:delay";
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16
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17 local sm2_attr = { xmlns = xmlns_sm2 };
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18 local sm3_attr = { xmlns = xmlns_sm3 };
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19
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06a78cba6499 mod_smacks: get_option+_number
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20 local resume_timeout = module:get_option_number("smacks_hibernation_time", 300);
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44b69c3d5351 mod_smacks: Fix smacks on s2s connections, but disable it by default.
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21 local s2s_smacks = module:get_option_boolean("smacks_enabled_s2s", false);
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842a8a3b0d81 mod_smacks: Make smacks_max_unacked_stanzas configurable
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22 local max_unacked_stanzas = module:get_option_number("smacks_max_unacked_stanzas", 0);
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713c6791fbcc mod_smacks: Import prosody.core_process_stanza()
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23 local core_process_stanza = prosody.core_process_stanza;
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92c6f84ec446 mod_smacks: Use require to import (thanks a lot, autocomplete)
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24 local sessionmanager = require"core.sessionmanager";
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25
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d87131b29bbd mod_smacks: Remove dependency on connlisteners (use sessions table shared by mod_c2s directly)
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26 local c2s_sessions = module:shared("/*/c2s/sessions");
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27 local session_registry = {};
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28
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36003cae2370 mod_smacks: Consolidate logic for deciding whether to advertise or allow smacks for a given session, and fix an issue with not allowing s2s connections to enable smacks because of not binding a resource... (thanks xnyphs)
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29 local function can_do_smacks(session, advertise_only)
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30 if session.smacks then return false, "unexpected-request", "Stream management is already enabled"; end
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32 local session_type = session.type;
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7693724881b3 Fix a typo in mod_smacks (type -> session_type).
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33 if session_type == "c2s" then
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parents: 590
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34 if not(advertise_only) and not(session.resource) then -- Fail unless we're only advertising sm
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f9c73c1249cd Update smacks to urn:xmpp:sm:3. Fix typo in can_do_smacks.
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35 return false, "unexpected-request", "Client must bind a resource before enabling stream management";
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parents: 590
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36 end
36003cae2370 mod_smacks: Consolidate logic for deciding whether to advertise or allow smacks for a given session, and fix an issue with not allowing s2s connections to enable smacks because of not binding a resource... (thanks xnyphs)
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parents: 590
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37 return true;
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7693724881b3 Fix a typo in mod_smacks (type -> session_type).
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parents: 594
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38 elseif s2s_smacks and (session_type == "s2sin" or session_type == "s2sout") then
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36003cae2370 mod_smacks: Consolidate logic for deciding whether to advertise or allow smacks for a given session, and fix an issue with not allowing s2s connections to enable smacks because of not binding a resource... (thanks xnyphs)
Matthew Wild <mwild1@gmail.com>
parents: 590
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39 return true;
36003cae2370 mod_smacks: Consolidate logic for deciding whether to advertise or allow smacks for a given session, and fix an issue with not allowing s2s connections to enable smacks because of not binding a resource... (thanks xnyphs)
Matthew Wild <mwild1@gmail.com>
parents: 590
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40 end
36003cae2370 mod_smacks: Consolidate logic for deciding whether to advertise or allow smacks for a given session, and fix an issue with not allowing s2s connections to enable smacks because of not binding a resource... (thanks xnyphs)
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parents: 590
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41 return false, "service-unavailable", "Stream management is not available for this stream";
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parents: 590
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42 end
36003cae2370 mod_smacks: Consolidate logic for deciding whether to advertise or allow smacks for a given session, and fix an issue with not allowing s2s connections to enable smacks because of not binding a resource... (thanks xnyphs)
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parents: 590
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43
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44 module:hook("stream-features",
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45 function (event)
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46 if can_do_smacks(event.origin, true) then
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47 event.features:tag("sm", sm2_attr):tag("optional"):up():up();
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48 event.features:tag("sm", sm3_attr):tag("optional"):up():up();
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49 end
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50 end);
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52 module:hook("s2s-stream-features",
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53 function (event)
591
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Matthew Wild <mwild1@gmail.com>
parents: 590
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54 if can_do_smacks(event.origin, true) then
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55 event.features:tag("sm", sm2_attr):tag("optional"):up():up();
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56 event.features:tag("sm", sm3_attr):tag("optional"):up():up();
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57 end
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58 end);
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parents:
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59
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60 local function outgoing_stanza_filter(stanza, session)
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61 local is_stanza = stanza.attr and not stanza.attr.xmlns and not stanza.name:find":";
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62 if is_stanza and not stanza._cached then -- Stanza in default stream namespace
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63 local queue = session.outgoing_stanza_queue;
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64 local cached_stanza = st.clone(stanza);
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65 cached_stanza._cached = true;
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66
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67 if cached_stanza and cached_stanza.name ~= "iq" and cached_stanza:get_child("delay", xmlns_delay) == nil then
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68 cached_stanza = cached_stanza:tag("delay", { xmlns = xmlns_delay, from = session.host, stamp = datetime.datetime()});
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69 end
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70
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71 queue[#queue+1] = cached_stanza;
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72 session.log("debug", "#queue = %d", #queue);
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d4a4ed31567e mod_smacks: Trick session.send() into not returning nil or mod_message will act as if messages were not delivered
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73 if session.hibernating then
d4a4ed31567e mod_smacks: Trick session.send() into not returning nil or mod_message will act as if messages were not delivered
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parents: 1520
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74 session.log("debug", "hibernating, stanza queued");
d4a4ed31567e mod_smacks: Trick session.send() into not returning nil or mod_message will act as if messages were not delivered
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75 return ""; -- Hack to make session.send() not return nil
d4a4ed31567e mod_smacks: Trick session.send() into not returning nil or mod_message will act as if messages were not delivered
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76 end
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05fa54404012 mod_smacks: Send ack requests by serializing and concatenating them to outgoing stanzas, using a timer might cause high CPU usage
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parents: 1531
diff changeset
77 if #queue > max_unacked_stanzas and not session.awaiting_ack then
05fa54404012 mod_smacks: Send ack requests by serializing and concatenating them to outgoing stanzas, using a timer might cause high CPU usage
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parents: 1531
diff changeset
78 session.awaiting_ack = true;
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parents: 1531
diff changeset
79 return tostring(stanza)..tostring(st.stanza("r", { xmlns = session.smacks }));
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80 end
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parents: 1518
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81 end
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parents: 1518
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82 return stanza;
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83 end
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parents: 1518
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84
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parents: 1518
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85 local function count_incoming_stanzas(stanza, session)
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parents: 1518
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86 if not stanza.attr.xmlns then
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parents: 1518
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87 session.handled_stanza_count = session.handled_stanza_count + 1;
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parents: 1518
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88 session.log("debug", "Handled %d incoming stanzas", session.handled_stanza_count);
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parents: 1518
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89 end
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Kim Alvefur <zash@zash.se>
parents: 1518
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90 return stanza;
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parents: 1518
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91 end
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parents: 1518
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92
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93 local function wrap_session_out(session, resume)
345
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Matthew Wild <mwild1@gmail.com>
parents: 263
diff changeset
94 if not resume then
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95 session.outgoing_stanza_queue = {};
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parents: 263
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96 session.last_acknowledged_stanza = 0;
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
Matthew Wild <mwild1@gmail.com>
parents: 263
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97 end
1343
7dbde05b48a9 all the things: Remove trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 1325
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98
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Kim Alvefur <zash@zash.se>
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99 add_filter(session, "stanzas/out", outgoing_stanza_filter, -1000);
988
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100
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101 local session_close = session.close;
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102 function session.close(...)
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103 if session.resumption_token then
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104 session_registry[session.resumption_token] = nil;
c15cea87036f mod_smacks: Wrap session:close() and make the session not resumable
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parents: 987
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105 session.resumption_token = nil;
c15cea87036f mod_smacks: Wrap session:close() and make the session not resumable
Kim Alvefur <zash@zash.se>
parents: 987
diff changeset
106 end
c15cea87036f mod_smacks: Wrap session:close() and make the session not resumable
Kim Alvefur <zash@zash.se>
parents: 987
diff changeset
107 return session_close(...);
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parents: 987
diff changeset
108 end
1529
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parents: 1528
diff changeset
109 return session;
16893646a458 mod_smacks: Move wrap_session() contents into separate direction-specific routines
Kim Alvefur <zash@zash.se>
parents: 1528
diff changeset
110 end
1343
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diff changeset
111
1529
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parents: 1528
diff changeset
112 local function wrap_session_in(session, resume)
345
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diff changeset
113 if not resume then
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parents: 263
diff changeset
114 session.handled_stanza_count = 0;
1520
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diff changeset
115 add_filter(session, "stanzas/in", count_incoming_stanzas, 1000);
345
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parents: 263
diff changeset
116 end
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parents: 263
diff changeset
117
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parents: 263
diff changeset
118 return session;
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parents: 263
diff changeset
119 end
201
bc24f58a0d39 mod_smacks: Use filters for catching incoming stanzas (more reliable and efficient), also add some logic to make compatible with the stream resumption module (coming soon)
Matthew Wild <mwild1@gmail.com>
parents: 200
diff changeset
120
1529
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diff changeset
121 local function wrap_session(session, resume)
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diff changeset
122 wrap_session_out(session, resume);
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diff changeset
123 wrap_session_in(session, resume);
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diff changeset
124 return session;
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parents: 1528
diff changeset
125 end
16893646a458 mod_smacks: Move wrap_session() contents into separate direction-specific routines
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parents: 1528
diff changeset
126
1298
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diff changeset
127 function handle_enable(session, stanza, xmlns_sm)
591
36003cae2370 mod_smacks: Consolidate logic for deciding whether to advertise or allow smacks for a given session, and fix an issue with not allowing s2s connections to enable smacks because of not binding a resource... (thanks xnyphs)
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parents: 590
diff changeset
128 local ok, err, err_text = can_do_smacks(session);
36003cae2370 mod_smacks: Consolidate logic for deciding whether to advertise or allow smacks for a given session, and fix an issue with not allowing s2s connections to enable smacks because of not binding a resource... (thanks xnyphs)
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parents: 590
diff changeset
129 if not ok then
590
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parents: 589
diff changeset
130 session.log("warn", "Failed to enable smacks: %s", err_text); -- TODO: XEP doesn't say we can send error text, should it?
1527
06ecc5b3ca46 mod_smacks: Send failure correctly on s2s
Kim Alvefur <zash@zash.se>
parents: 1526
diff changeset
131 (session.sends2s or session.send)(st.stanza("failed", { xmlns = xmlns_sm }):tag(err, { xmlns = xmlns_errors}));
590
40b707d7a809 mod_smacks: Handle a client trying to <enable> twice, or trying to <enable> before resource binding (thanks Thijs Alkemade)
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parents: 589
diff changeset
132 return true;
40b707d7a809 mod_smacks: Handle a client trying to <enable> twice, or trying to <enable> before resource binding (thanks Thijs Alkemade)
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parents: 589
diff changeset
133 end
40b707d7a809 mod_smacks: Handle a client trying to <enable> twice, or trying to <enable> before resource binding (thanks Thijs Alkemade)
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parents: 589
diff changeset
134
345
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diff changeset
135 module:log("debug", "Enabling stream management");
1520
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diff changeset
136 session.smacks = xmlns_sm;
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diff changeset
137
1520
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diff changeset
138 wrap_session(session, false);
1343
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diff changeset
139
345
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parents: 263
diff changeset
140 local resume_token;
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parents: 263
diff changeset
141 local resume = stanza.attr.resume;
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parents: 263
diff changeset
142 if resume == "true" or resume == "1" then
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parents: 263
diff changeset
143 resume_token = uuid_generate();
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parents: 263
diff changeset
144 session_registry[resume_token] = session;
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parents: 263
diff changeset
145 session.resumption_token = resume_token;
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parents: 263
diff changeset
146 end
576
44b69c3d5351 mod_smacks: Fix smacks on s2s connections, but disable it by default.
Kim Alvefur <zash@zash.se>
parents: 478
diff changeset
147 (session.sends2s or session.send)(st.stanza("enabled", { xmlns = xmlns_sm, id = resume_token, resume = resume }));
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parents: 478
diff changeset
148 return true;
1298
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parents: 1293
diff changeset
149 end
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
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parents: 1293
diff changeset
150 module:hook_stanza(xmlns_sm2, "enable", function (session, stanza) return handle_enable(session, stanza, xmlns_sm2); end, 100);
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parents: 1293
diff changeset
151 module:hook_stanza(xmlns_sm3, "enable", function (session, stanza) return handle_enable(session, stanza, xmlns_sm3); end, 100);
576
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parents: 478
diff changeset
152
1530
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parents: 1529
diff changeset
153 module:hook_stanza("http://etherx.jabber.org/streams", "features",
fb7cd669f41b mod_smacks: Initiate outgoing smacks on s2s when sending request and incoming when the remote says enabled
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parents: 1529
diff changeset
154 function (session, stanza)
1531
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parents: 1530
diff changeset
155 module:add_timer(0, function ()
7d86fc477993 mod_smacks: Delay initiation of outgoing smacks on s2s until after queued stanzas are sent
Kim Alvefur <zash@zash.se>
parents: 1530
diff changeset
156 if can_do_smacks(session) then
7d86fc477993 mod_smacks: Delay initiation of outgoing smacks on s2s until after queued stanzas are sent
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parents: 1530
diff changeset
157 if stanza:get_child("sm", xmlns_sm3) then
7d86fc477993 mod_smacks: Delay initiation of outgoing smacks on s2s until after queued stanzas are sent
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parents: 1530
diff changeset
158 session.sends2s(st.stanza("enable", sm3_attr));
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parents: 1530
diff changeset
159 session.smacks = xmlns_sm3;
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Kim Alvefur <zash@zash.se>
parents: 1530
diff changeset
160 elseif stanza:get_child("sm", xmlns_sm2) then
7d86fc477993 mod_smacks: Delay initiation of outgoing smacks on s2s until after queued stanzas are sent
Kim Alvefur <zash@zash.se>
parents: 1530
diff changeset
161 session.sends2s(st.stanza("enable", sm2_attr));
7d86fc477993 mod_smacks: Delay initiation of outgoing smacks on s2s until after queued stanzas are sent
Kim Alvefur <zash@zash.se>
parents: 1530
diff changeset
162 session.smacks = xmlns_sm2;
7d86fc477993 mod_smacks: Delay initiation of outgoing smacks on s2s until after queued stanzas are sent
Kim Alvefur <zash@zash.se>
parents: 1530
diff changeset
163 else
7d86fc477993 mod_smacks: Delay initiation of outgoing smacks on s2s until after queued stanzas are sent
Kim Alvefur <zash@zash.se>
parents: 1530
diff changeset
164 return;
7d86fc477993 mod_smacks: Delay initiation of outgoing smacks on s2s until after queued stanzas are sent
Kim Alvefur <zash@zash.se>
parents: 1530
diff changeset
165 end
7d86fc477993 mod_smacks: Delay initiation of outgoing smacks on s2s until after queued stanzas are sent
Kim Alvefur <zash@zash.se>
parents: 1530
diff changeset
166 wrap_session_out(session, false);
1530
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Kim Alvefur <zash@zash.se>
parents: 1529
diff changeset
167 end
1531
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Kim Alvefur <zash@zash.se>
parents: 1530
diff changeset
168 end);
1530
fb7cd669f41b mod_smacks: Initiate outgoing smacks on s2s when sending request and incoming when the remote says enabled
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parents: 1529
diff changeset
169 end);
fb7cd669f41b mod_smacks: Initiate outgoing smacks on s2s when sending request and incoming when the remote says enabled
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parents: 1529
diff changeset
170
1298
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diff changeset
171 function handle_enabled(session, stanza, xmlns_sm)
576
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Kim Alvefur <zash@zash.se>
parents: 478
diff changeset
172 module:log("debug", "Enabling stream management");
1520
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Kim Alvefur <zash@zash.se>
parents: 1518
diff changeset
173 session.smacks = xmlns_sm;
1343
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parents: 1325
diff changeset
174
1530
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parents: 1529
diff changeset
175 wrap_session_in(session, false);
576
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Kim Alvefur <zash@zash.se>
parents: 478
diff changeset
176
44b69c3d5351 mod_smacks: Fix smacks on s2s connections, but disable it by default.
Kim Alvefur <zash@zash.se>
parents: 478
diff changeset
177 -- FIXME Resume?
1343
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parents: 1325
diff changeset
178
345
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parents: 263
diff changeset
179 return true;
1298
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
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parents: 1293
diff changeset
180 end
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
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parents: 1293
diff changeset
181 module:hook_stanza(xmlns_sm2, "enabled", function (session, stanza) return handle_enabled(session, stanza, xmlns_sm2); end, 100);
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
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parents: 1293
diff changeset
182 module:hook_stanza(xmlns_sm3, "enabled", function (session, stanza) return handle_enabled(session, stanza, xmlns_sm3); end, 100);
160
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
183
1298
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parents: 1293
diff changeset
184 function handle_r(origin, stanza, xmlns_sm)
160
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
185 if not origin.smacks then
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
186 module:log("debug", "Received ack request from non-smack-enabled session");
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
187 return;
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
188 end
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
189 module:log("debug", "Received ack request, acking for %d", origin.handled_stanza_count);
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
190 -- Reply with <a>
255
9b9b089407b1 mod_smacks: Fix to reply to stream for s2s sessions
Matthew Wild <mwild1@gmail.com>
parents: 220
diff changeset
191 (origin.sends2s or origin.send)(st.stanza("a", { xmlns = xmlns_sm, h = tostring(origin.handled_stanza_count) }));
160
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
192 return true;
1298
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parents: 1293
diff changeset
193 end
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 1293
diff changeset
194 module:hook_stanza(xmlns_sm2, "r", function (origin, stanza) return handle_r(origin, stanza, xmlns_sm2); end);
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 1293
diff changeset
195 module:hook_stanza(xmlns_sm3, "r", function (origin, stanza) return handle_r(origin, stanza, xmlns_sm3); end);
160
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parents:
diff changeset
196
1298
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diff changeset
197 function handle_a(origin, stanza)
160
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parents:
diff changeset
198 if not origin.smacks then return; end
200
64a573203c20 mod_smacks: Better logic for deciding what is a stanza and what is not, and deciding when to send ack requests
Matthew Wild <mwild1@gmail.com>
parents: 160
diff changeset
199 origin.awaiting_ack = nil;
160
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
200 -- Remove handled stanzas from outgoing_stanza_queue
258
36648205b10a mod_smacks: Add commented log statement for future debugging
Matthew Wild <mwild1@gmail.com>
parents: 257
diff changeset
201 --log("debug", "ACK: h=%s, last=%s", stanza.attr.h or "", origin.last_acknowledged_stanza or "");
1407
b631c8a8b9e7 mod_smacks: Assert that the 'h' attribute is present and a number
Kim Alvefur <zash@zash.se>
parents: 1406
diff changeset
202 local h = tonumber(stanza.attr.h);
b631c8a8b9e7 mod_smacks: Assert that the 'h' attribute is present and a number
Kim Alvefur <zash@zash.se>
parents: 1406
diff changeset
203 if not h then
b631c8a8b9e7 mod_smacks: Assert that the 'h' attribute is present and a number
Kim Alvefur <zash@zash.se>
parents: 1406
diff changeset
204 origin:close{ condition = "invalid-xml"; text = "Missing or invalid 'h' attribute"; };
b631c8a8b9e7 mod_smacks: Assert that the 'h' attribute is present and a number
Kim Alvefur <zash@zash.se>
parents: 1406
diff changeset
205 end
b631c8a8b9e7 mod_smacks: Assert that the 'h' attribute is present and a number
Kim Alvefur <zash@zash.se>
parents: 1406
diff changeset
206 local handled_stanza_count = h-origin.last_acknowledged_stanza;
220
263858d40ceb mod_smacks: Fix the logic for handling outgoing stanzas and ack requests
Matthew Wild <mwild1@gmail.com>
parents: 202
diff changeset
207 local queue = origin.outgoing_stanza_queue;
263858d40ceb mod_smacks: Fix the logic for handling outgoing stanzas and ack requests
Matthew Wild <mwild1@gmail.com>
parents: 202
diff changeset
208 if handled_stanza_count > #queue then
1416
7ddb522d9b28 mod_smacks: Fix logging (Thanks Ge0rG)
Kim Alvefur <zash@zash.se>
parents: 1408
diff changeset
209 origin.log("warn", "The client says it handled %d new stanzas, but we only sent %d :)",
220
263858d40ceb mod_smacks: Fix the logic for handling outgoing stanzas and ack requests
Matthew Wild <mwild1@gmail.com>
parents: 202
diff changeset
210 handled_stanza_count, #queue);
1416
7ddb522d9b28 mod_smacks: Fix logging (Thanks Ge0rG)
Kim Alvefur <zash@zash.se>
parents: 1408
diff changeset
211 origin.log("debug", "Client h: %d, our h: %d", tonumber(stanza.attr.h), origin.last_acknowledged_stanza);
220
263858d40ceb mod_smacks: Fix the logic for handling outgoing stanzas and ack requests
Matthew Wild <mwild1@gmail.com>
parents: 202
diff changeset
212 for i=1,#queue do
1416
7ddb522d9b28 mod_smacks: Fix logging (Thanks Ge0rG)
Kim Alvefur <zash@zash.se>
parents: 1408
diff changeset
213 origin.log("debug", "Q item %d: %s", i, tostring(queue[i]));
220
263858d40ceb mod_smacks: Fix the logic for handling outgoing stanzas and ack requests
Matthew Wild <mwild1@gmail.com>
parents: 202
diff changeset
214 end
263858d40ceb mod_smacks: Fix the logic for handling outgoing stanzas and ack requests
Matthew Wild <mwild1@gmail.com>
parents: 202
diff changeset
215 end
263858d40ceb mod_smacks: Fix the logic for handling outgoing stanzas and ack requests
Matthew Wild <mwild1@gmail.com>
parents: 202
diff changeset
216 for i=1,math_min(handled_stanza_count,#queue) do
160
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parents:
diff changeset
217 t_remove(origin.outgoing_stanza_queue, 1);
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parents:
diff changeset
218 end
1406
7d76dd2310ef mod_smacks: Add more debug logging
Kim Alvefur <zash@zash.se>
parents: 1405
diff changeset
219 origin.log("debug", "#queue = %d", #queue);
220
263858d40ceb mod_smacks: Fix the logic for handling outgoing stanzas and ack requests
Matthew Wild <mwild1@gmail.com>
parents: 202
diff changeset
220 origin.last_acknowledged_stanza = origin.last_acknowledged_stanza + handled_stanza_count;
160
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parents:
diff changeset
221 return true;
1298
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Florian Zeitz <florob@babelmonkeys.de>
parents: 1293
diff changeset
222 end
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 1293
diff changeset
223 module:hook_stanza(xmlns_sm2, "a", handle_a);
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 1293
diff changeset
224 module:hook_stanza(xmlns_sm3, "a", handle_a);
160
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parents:
diff changeset
225
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parents:
diff changeset
226 --TODO: Optimise... incoming stanzas should be handled by a per-session
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diff changeset
227 -- function that has a counter as an upvalue (no table indexing for increments,
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parents:
diff changeset
228 -- and won't slow non-198 sessions). We can also then remove the .handled flag
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parents:
diff changeset
229 -- on stanzas
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230
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parents:
diff changeset
231 function handle_unacked_stanzas(session)
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parents:
diff changeset
232 local queue = session.outgoing_stanza_queue;
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diff changeset
233 local error_attr = { type = "cancel" };
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parents:
diff changeset
234 if #queue > 0 then
202
d11478ae374e mod_smacks: Clean outgoing stanza queue correctly on session close
Matthew Wild <mwild1@gmail.com>
parents: 201
diff changeset
235 session.outgoing_stanza_queue = {};
160
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parents:
diff changeset
236 for i=1,#queue do
256
57de4a7840ef mod_smacks: Fixes for storing the unacked stanzas so that they can be properly replayed to clients on stream resume
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parents: 255
diff changeset
237 local reply = st.reply(queue[i]);
160
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238 if reply.attr.to ~= session.full_jid then
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parents:
diff changeset
239 reply.attr.type = "error";
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diff changeset
240 reply:tag("error", error_attr)
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241 :tag("recipient-unavailable", {xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas"});
256
57de4a7840ef mod_smacks: Fixes for storing the unacked stanzas so that they can be properly replayed to clients on stream resume
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parents: 255
diff changeset
242 core_process_stanza(session, reply);
160
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parents:
diff changeset
243 end
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parents:
diff changeset
244 end
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parents:
diff changeset
245 end
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parents:
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246 end
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
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parents:
diff changeset
247
622
ce39df945de1 mod_smacks: Use pre-resource-unbind (0.9 feature) to fix reloadability and multiple host support
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parents: 595
diff changeset
248 module:hook("pre-resource-unbind", function (event)
ce39df945de1 mod_smacks: Use pre-resource-unbind (0.9 feature) to fix reloadability and multiple host support
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parents: 595
diff changeset
249 local session, err = event.session, event.error;
1024
d7655e634c30 mod_smacks: Allow resumption if the TCP connection is closed from our end, c15cea87036f ensures distinction from cleanly closed streams (thanks Lance)
Kim Alvefur <zash@zash.se>
parents: 994
diff changeset
250 if session.smacks then
257
08fa42e1ab06 mod_smacks: Fixes for monkey-patched sessionmanager.destroy to handle stream resumption, and to fall back to stock destroy() if the session is not smacks-enabled.
Matthew Wild <mwild1@gmail.com>
parents: 256
diff changeset
251 if not session.resumption_token then
08fa42e1ab06 mod_smacks: Fixes for monkey-patched sessionmanager.destroy to handle stream resumption, and to fall back to stock destroy() if the session is not smacks-enabled.
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parents: 256
diff changeset
252 local queue = session.outgoing_stanza_queue;
08fa42e1ab06 mod_smacks: Fixes for monkey-patched sessionmanager.destroy to handle stream resumption, and to fall back to stock destroy() if the session is not smacks-enabled.
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parents: 256
diff changeset
253 if #queue > 0 then
1405
26a2092e289f mod_smacks: Log things attached to sessions instead of the module
Kim Alvefur <zash@zash.se>
parents: 1343
diff changeset
254 session.log("warn", "Destroying session with %d unacked stanzas", #queue);
257
08fa42e1ab06 mod_smacks: Fixes for monkey-patched sessionmanager.destroy to handle stream resumption, and to fall back to stock destroy() if the session is not smacks-enabled.
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parents: 256
diff changeset
255 handle_unacked_stanzas(session);
160
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parents:
diff changeset
256 end
257
08fa42e1ab06 mod_smacks: Fixes for monkey-patched sessionmanager.destroy to handle stream resumption, and to fall back to stock destroy() if the session is not smacks-enabled.
Matthew Wild <mwild1@gmail.com>
parents: 256
diff changeset
257 else
586
f733e7599ed6 mod_smacks: Add logging to hibernation and session destruction (thanks darkrain)
Matthew Wild <mwild1@gmail.com>
parents: 576
diff changeset
258 session.log("debug", "mod_smacks hibernating session for up to %d seconds", resume_timeout);
345
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parents: 263
diff changeset
259 local hibernate_time = os_time(); -- Track the time we went into hibernation
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parents: 263
diff changeset
260 session.hibernating = hibernate_time;
478
db0f065c4e09 mod_smacks: Don't destroy a session that binds the same resource as a hibernating smacks session (thanks xnyhps for tracking down the problem, though I've used a different fix)
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parents: 345
diff changeset
261 local resumption_token = session.resumption_token;
257
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parents: 256
diff changeset
262 timer.add_task(resume_timeout, function ()
586
f733e7599ed6 mod_smacks: Add logging to hibernation and session destruction (thanks darkrain)
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parents: 576
diff changeset
263 session.log("debug", "mod_smacks hibernation timeout reached...");
478
db0f065c4e09 mod_smacks: Don't destroy a session that binds the same resource as a hibernating smacks session (thanks xnyhps for tracking down the problem, though I've used a different fix)
Matthew Wild <mwild1@gmail.com>
parents: 345
diff changeset
264 -- We need to check the current resumption token for this resource
db0f065c4e09 mod_smacks: Don't destroy a session that binds the same resource as a hibernating smacks session (thanks xnyhps for tracking down the problem, though I've used a different fix)
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parents: 345
diff changeset
265 -- matches the smacks session this timer is for in case it changed
db0f065c4e09 mod_smacks: Don't destroy a session that binds the same resource as a hibernating smacks session (thanks xnyhps for tracking down the problem, though I've used a different fix)
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parents: 345
diff changeset
266 -- (for example, the client may have bound a new resource and
db0f065c4e09 mod_smacks: Don't destroy a session that binds the same resource as a hibernating smacks session (thanks xnyhps for tracking down the problem, though I've used a different fix)
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parents: 345
diff changeset
267 -- started a new smacks session, or not be using smacks)
810
464ed063a8f2 mod_smacks: Less table indexing!
Kim Alvefur <zash@zash.se>
parents: 757
diff changeset
268 local curr_session = full_sessions[session.full_jid];
1598
043d08448d87 mod_smacks: Remove negation of condition, most likely a leftover from debugging
Kim Alvefur <zash@zash.se>
parents: 1597
diff changeset
269 if session.destroyed then
987
fabff75bfc3f mod_smacks: If a hibernating session was destroyed before the timeout, don't destroy it again or say that it was resumed
Kim Alvefur <zash@zash.se>
parents: 925
diff changeset
270 session.log("debug", "The session has already been destroyed");
fabff75bfc3f mod_smacks: If a hibernating session was destroyed before the timeout, don't destroy it again or say that it was resumed
Kim Alvefur <zash@zash.se>
parents: 925
diff changeset
271 elseif curr_session and curr_session.resumption_token == resumption_token
345
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parents: 263
diff changeset
272 -- Check the hibernate time still matches what we think it is,
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parents: 263
diff changeset
273 -- otherwise the session resumed and re-hibernated.
478
db0f065c4e09 mod_smacks: Don't destroy a session that binds the same resource as a hibernating smacks session (thanks xnyhps for tracking down the problem, though I've used a different fix)
Matthew Wild <mwild1@gmail.com>
parents: 345
diff changeset
274 and session.hibernating == hibernate_time then
586
f733e7599ed6 mod_smacks: Add logging to hibernation and session destruction (thanks darkrain)
Matthew Wild <mwild1@gmail.com>
parents: 576
diff changeset
275 session.log("debug", "Destroying session for hibernating too long");
345
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parents: 263
diff changeset
276 session_registry[session.resumption_token] = nil;
257
08fa42e1ab06 mod_smacks: Fixes for monkey-patched sessionmanager.destroy to handle stream resumption, and to fall back to stock destroy() if the session is not smacks-enabled.
Matthew Wild <mwild1@gmail.com>
parents: 256
diff changeset
277 session.resumption_token = nil;
345
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parents: 263
diff changeset
278 sessionmanager.destroy_session(session);
586
f733e7599ed6 mod_smacks: Add logging to hibernation and session destruction (thanks darkrain)
Matthew Wild <mwild1@gmail.com>
parents: 576
diff changeset
279 else
f733e7599ed6 mod_smacks: Add logging to hibernation and session destruction (thanks darkrain)
Matthew Wild <mwild1@gmail.com>
parents: 576
diff changeset
280 session.log("debug", "Session resumed before hibernation timeout, all is well")
257
08fa42e1ab06 mod_smacks: Fixes for monkey-patched sessionmanager.destroy to handle stream resumption, and to fall back to stock destroy() if the session is not smacks-enabled.
Matthew Wild <mwild1@gmail.com>
parents: 256
diff changeset
281 end
08fa42e1ab06 mod_smacks: Fixes for monkey-patched sessionmanager.destroy to handle stream resumption, and to fall back to stock destroy() if the session is not smacks-enabled.
Matthew Wild <mwild1@gmail.com>
parents: 256
diff changeset
282 end);
622
ce39df945de1 mod_smacks: Use pre-resource-unbind (0.9 feature) to fix reloadability and multiple host support
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parents: 595
diff changeset
283 return true; -- Postpone destruction for now
160
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parents:
diff changeset
284 end
1343
7dbde05b48a9 all the things: Remove trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 1325
diff changeset
285
160
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parents:
diff changeset
286 end
622
ce39df945de1 mod_smacks: Use pre-resource-unbind (0.9 feature) to fix reloadability and multiple host support
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parents: 595
diff changeset
287 end);
345
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
Matthew Wild <mwild1@gmail.com>
parents: 263
diff changeset
288
1298
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 1293
diff changeset
289 function handle_resume(session, stanza, xmlns_sm)
925
720b8268778e mod_smacks: Don't allow steam resumption onto a stream after resource binding
Kim Alvefur <zash@zash.se>
parents: 908
diff changeset
290 if session.full_jid then
994
487cd02aada0 mod_smacks: Complain a little louder about clients trying to resume after resource binding
Kim Alvefur <zash@zash.se>
parents: 988
diff changeset
291 session.log("warn", "Tried to resume after resource binding");
1298
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 1293
diff changeset
292 session.send(st.stanza("failed", { xmlns = xmlns_sm })
925
720b8268778e mod_smacks: Don't allow steam resumption onto a stream after resource binding
Kim Alvefur <zash@zash.se>
parents: 908
diff changeset
293 :tag("unexpected-request", { xmlns = xmlns_errors })
720b8268778e mod_smacks: Don't allow steam resumption onto a stream after resource binding
Kim Alvefur <zash@zash.se>
parents: 908
diff changeset
294 );
720b8268778e mod_smacks: Don't allow steam resumption onto a stream after resource binding
Kim Alvefur <zash@zash.se>
parents: 908
diff changeset
295 return true;
720b8268778e mod_smacks: Don't allow steam resumption onto a stream after resource binding
Kim Alvefur <zash@zash.se>
parents: 908
diff changeset
296 end
720b8268778e mod_smacks: Don't allow steam resumption onto a stream after resource binding
Kim Alvefur <zash@zash.se>
parents: 908
diff changeset
297
345
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
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parents: 263
diff changeset
298 local id = stanza.attr.previd;
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
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parents: 263
diff changeset
299 local original_session = session_registry[id];
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
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parents: 263
diff changeset
300 if not original_session then
588
8042558336b6 mod_smacks: Log message when client tries to resume unknown session
Matthew Wild <mwild1@gmail.com>
parents: 587
diff changeset
301 session.log("debug", "Tried to resume non-existent session with id %s", id);
1298
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 1293
diff changeset
302 session.send(st.stanza("failed", { xmlns = xmlns_sm })
345
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parents: 263
diff changeset
303 :tag("item-not-found", { xmlns = xmlns_errors })
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
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parents: 263
diff changeset
304 );
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
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parents: 263
diff changeset
305 elseif session.username == original_session.username
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parents: 263
diff changeset
306 and session.host == original_session.host then
587
322a14acd974 mod_smacks: Add log message on resume
Matthew Wild <mwild1@gmail.com>
parents: 586
diff changeset
307 session.log("debug", "mod_smacks resuming existing session...");
345
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
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parents: 263
diff changeset
308 -- TODO: All this should move to sessionmanager (e.g. session:replace(new_session))
623
c1f3958695ea mod_smacks: If a resumed session still has a connection open, close that connection before resuming
Matthew Wild <mwild1@gmail.com>
parents: 622
diff changeset
309 if original_session.conn then
c1f3958695ea mod_smacks: If a resumed session still has a connection open, close that connection before resuming
Matthew Wild <mwild1@gmail.com>
parents: 622
diff changeset
310 session.log("debug", "mod_smacks closing an old connection for this session");
c1f3958695ea mod_smacks: If a resumed session still has a connection open, close that connection before resuming
Matthew Wild <mwild1@gmail.com>
parents: 622
diff changeset
311 local conn = original_session.conn;
640
d87131b29bbd mod_smacks: Remove dependency on connlisteners (use sessions table shared by mod_c2s directly)
Matthew Wild <mwild1@gmail.com>
parents: 625
diff changeset
312 c2s_sessions[conn] = nil;
623
c1f3958695ea mod_smacks: If a resumed session still has a connection open, close that connection before resuming
Matthew Wild <mwild1@gmail.com>
parents: 622
diff changeset
313 conn:close();
c1f3958695ea mod_smacks: If a resumed session still has a connection open, close that connection before resuming
Matthew Wild <mwild1@gmail.com>
parents: 622
diff changeset
314 end
345
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
Matthew Wild <mwild1@gmail.com>
parents: 263
diff changeset
315 original_session.ip = session.ip;
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
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parents: 263
diff changeset
316 original_session.conn = session.conn;
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
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parents: 263
diff changeset
317 original_session.send = session.send;
1520
2881d532f385 mod_smacks: Use filters for queuing outgoing stanzas instead of wrapping session.send()
Kim Alvefur <zash@zash.se>
parents: 1518
diff changeset
318 original_session.send.filter = original_session.filter;
345
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
Matthew Wild <mwild1@gmail.com>
parents: 263
diff changeset
319 original_session.stream = session.stream;
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
Matthew Wild <mwild1@gmail.com>
parents: 263
diff changeset
320 original_session.secure = session.secure;
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
Matthew Wild <mwild1@gmail.com>
parents: 263
diff changeset
321 original_session.hibernating = nil;
1520
2881d532f385 mod_smacks: Use filters for queuing outgoing stanzas instead of wrapping session.send()
Kim Alvefur <zash@zash.se>
parents: 1518
diff changeset
322 wrap_session(original_session, true);
345
445178d15b51 mod_smacks: Merge mod_fastreconnect (resumption support), fix a number of bugs, refactor the code and add some more comments to explain process
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parents: 263
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323 -- Inform xmppstream of the new session (passed to its callbacks)
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324 original_session.stream:set_session(original_session);
345
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325 -- Similar for connlisteners
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326 c2s_sessions[session.conn] = original_session;
345
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327
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328 session.send(st.stanza("resumed", { xmlns = xmlns_sm,
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329 h = original_session.handled_stanza_count, previd = id }));
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parents: 1325
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330
345
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331 -- Fake an <a> with the h of the <resume/> from the client
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332 original_session:dispatch_stanza(st.stanza("a", { xmlns = xmlns_sm,
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333 h = stanza.attr.h }));
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334
345
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335 -- Ok, we need to re-send any stanzas that the client didn't see
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336 -- ...they are what is now left in the outgoing stanza queue
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337 local queue = original_session.outgoing_stanza_queue;
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338 session.log("debug", "#queue = %d", #queue);
345
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339 for i=1,#queue do
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340 session.send(queue[i]);
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341 end
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342 session.log("debug", "#queue = %d -- after send", #queue);
345
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343 else
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344 module:log("warn", "Client %s@%s[%s] tried to resume stream for %s@%s[%s]",
345
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345 session.username or "?", session.host or "?", session.type,
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346 original_session.username or "?", original_session.host or "?", original_session.type);
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347 session.send(st.stanza("failed", { xmlns = xmlns_sm })
345
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348 :tag("not-authorized", { xmlns = xmlns_errors }));
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349 end
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350 return true;
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351 end
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352 module:hook_stanza(xmlns_sm2, "resume", function (session, stanza) return handle_resume(session, stanza, xmlns_sm2); end);
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353 module:hook_stanza(xmlns_sm3, "resume", function (session, stanza) return handle_resume(session, stanza, xmlns_sm3); end);