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annotate mod_smacks/mod_smacks.lua @ 1408:ed2a9c00b5c4

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mod_smacks: Impose a limit on number of unacked stanzas (Thanks Holger)
author Kim Alvefur <zash@zash.se>
date Wed, 07 May 2014 16:18:05 +0200
parents b631c8a8b9e7
children 7ddb522d9b28
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rev   line source
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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
1 local st = require "util.stanza";
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parents: 263
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2 local uuid_generate = require "util.uuid".generate;
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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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4 local t_insert, t_remove = table.insert, table.remove;
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263858d40ceb mod_smacks: Fix the logic for handling outgoing stanzas and ack requests
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parents: 202
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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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parents: 200
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8 local add_filter = require "util.filters".add_filter;
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
9 local timer = require "util.timer";
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Thijs Alkemade <thijsalkemade@gmail.com>
parents: 592
diff changeset
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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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.
Kim Alvefur <zash@zash.se>
parents: 478
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21 local s2s_smacks = module:get_option_boolean("smacks_enabled_s2s", false);
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ed2a9c00b5c4 mod_smacks: Impose a limit on number of unacked stanzas (Thanks Holger)
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parents: 1407
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22 local max_queue_size = module:get_option_number("smacks_max_queue_size", 500);
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842a8a3b0d81 mod_smacks: Make smacks_max_unacked_stanzas configurable
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parents: 641
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23 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()
Kim Alvefur <zash@zash.se>
parents: 642
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24 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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25 local sessionmanager = require"core.sessionmanager";
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64a573203c20 mod_smacks: Better logic for deciding what is a stanza and what is not, and deciding when to send ack requests
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26
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d87131b29bbd mod_smacks: Remove dependency on connlisteners (use sessions table shared by mod_c2s directly)
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27 local c2s_sessions = module:shared("/*/c2s/sessions");
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28 local session_registry = {};
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29
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parents: 590
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30 local function can_do_smacks(session, advertise_only)
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31 if session.smacks then return false, "unexpected-request", "Stream management is already enabled"; end
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32
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33 local session_type = session.type;
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7693724881b3 Fix a typo in mod_smacks (type -> session_type).
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34 if session_type == "c2s" then
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parents: 590
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35 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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36 return false, "unexpected-request", "Client must bind a resource before enabling stream management";
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parents: 590
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37 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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38 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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39 elseif s2s_smacks and (session_type == "s2sin" or session_type == "s2sout") then
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parents: 590
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40 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)
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parents: 590
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41 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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42 return false, "service-unavailable", "Stream management is not available for this stream";
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parents: 590
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43 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)
Matthew Wild <mwild1@gmail.com>
parents: 590
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44
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45 module:hook("stream-features",
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46 function (event)
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parents: 590
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47 if can_do_smacks(event.origin, true) then
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48 event.features:tag("sm", sm2_attr):tag("optional"):up():up();
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49 event.features:tag("sm", sm3_attr):tag("optional"):up():up();
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50 end
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51 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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53 module:hook("s2s-stream-features",
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54 function (event)
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parents: 590
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55 if can_do_smacks(event.origin, true) then
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56 event.features:tag("sm", sm2_attr):tag("optional"):up():up();
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57 event.features:tag("sm", sm3_attr):tag("optional"):up():up();
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58 end
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59 end);
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60
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61 module:hook_stanza("http://etherx.jabber.org/streams", "features",
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62 function (session, stanza)
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63 if can_do_smacks(session) then
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64 if stanza:get_child("sm", xmlns_sm3) then
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65 session.sends2s(st.stanza("enable", sm3_attr));
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66 elseif stanza:get_child("sm", xmlns_sm2) then
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67 session.sends2s(st.stanza("enable", sm2_attr));
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68 end
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69 end
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70 end);
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71
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72 local function wrap_session(session, resume, xmlns_sm)
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73 local sm_attr = { xmlns = xmlns_sm };
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74 -- Overwrite process_stanza() and send()
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parents: 263
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75 local queue;
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76 if not resume then
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parents: 263
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77 queue = {};
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78 session.outgoing_stanza_queue = queue;
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79 session.last_acknowledged_stanza = 0;
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parents: 263
diff changeset
80 else
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parents: 263
diff changeset
81 queue = session.outgoing_stanza_queue;
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parents: 263
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82 end
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83
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84 local _send = session.sends2s or session.send;
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diff changeset
85 local function new_send(stanza)
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parents: 263
diff changeset
86 local attr = stanza.attr;
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parents: 263
diff changeset
87 if attr and not attr.xmlns then -- Stanza in default stream namespace
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parents: 592
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88 local cached_stanza = st.clone(stanza);
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89
593
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parents: 592
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90 if cached_stanza and cached_stanza:get_child("delay", xmlns_delay) == nil then
db2a40cbd6ef Add a <delay> to stanzas that are queued (and don't have one already), so clients can show them with the original timestamp.
Thijs Alkemade <thijsalkemade@gmail.com>
parents: 592
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91 cached_stanza = cached_stanza:tag("delay", { xmlns = xmlns_delay, from = session.host, stamp = datetime.datetime()});
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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parents: 592
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92 end
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93
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parents: 1407
diff changeset
94 if max_queue_size > 0 and #queue > max_queue_size then
ed2a9c00b5c4 mod_smacks: Impose a limit on number of unacked stanzas (Thanks Holger)
Kim Alvefur <zash@zash.se>
parents: 1407
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95 session.log("warn", "Too many unacked stanzas");
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Kim Alvefur <zash@zash.se>
parents: 1407
diff changeset
96 session:close{ condition = "policy-violation"; text = "Too many unacked stanzas"; };
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97 end
593
db2a40cbd6ef Add a <delay> to stanzas that are queued (and don't have one already), so clients can show them with the original timestamp.
Thijs Alkemade <thijsalkemade@gmail.com>
parents: 592
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98 queue[#queue+1] = cached_stanza;
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99 session.log("debug", "#queue = %d", #queue);
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parents: 263
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100 end
908
abf0f12fe75c mod_smacks: Don't try to send stanzas to hibernating sessions. Fixes duplicate IQ replies on libevent.
Kim Alvefur <zash@zash.se>
parents: 891
diff changeset
101 if session.hibernating then
1406
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102 session.log("debug", "hibernating, stanza queued")
908
abf0f12fe75c mod_smacks: Don't try to send stanzas to hibernating sessions. Fixes duplicate IQ replies on libevent.
Kim Alvefur <zash@zash.se>
parents: 891
diff changeset
103 -- The session is hibernating, no point in sending the stanza
abf0f12fe75c mod_smacks: Don't try to send stanzas to hibernating sessions. Fixes duplicate IQ replies on libevent.
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parents: 891
diff changeset
104 -- over a dead connection. It will be delivered upon resumption.
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Kim Alvefur <zash@zash.se>
parents: 891
diff changeset
105 return true;
abf0f12fe75c mod_smacks: Don't try to send stanzas to hibernating sessions. Fixes duplicate IQ replies on libevent.
Kim Alvefur <zash@zash.se>
parents: 891
diff changeset
106 end
345
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parents: 263
diff changeset
107 local ok, err = _send(stanza);
811
e2d940d81613 mod_smacks: Only request ack for stanzas
Kim Alvefur <zash@zash.se>
parents: 810
diff changeset
108 if ok and #queue > max_unacked_stanzas and not session.awaiting_ack and attr and not attr.xmlns then
345
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parents: 263
diff changeset
109 session.awaiting_ack = true;
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parents: 263
diff changeset
110 return _send(st.stanza("r", sm_attr));
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parents: 263
diff changeset
111 end
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diff changeset
112 return ok, err;
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parents: 263
diff changeset
113 end
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diff changeset
114
345
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diff changeset
115 if session.sends2s then
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diff changeset
116 session.sends2s = new_send;
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diff changeset
117 else
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diff changeset
118 session.send = new_send;
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parents: 263
diff changeset
119 end
988
c15cea87036f mod_smacks: Wrap session:close() and make the session not resumable
Kim Alvefur <zash@zash.se>
parents: 987
diff changeset
120
c15cea87036f mod_smacks: Wrap session:close() and make the session not resumable
Kim Alvefur <zash@zash.se>
parents: 987
diff changeset
121 local session_close = session.close;
c15cea87036f mod_smacks: Wrap session:close() and make the session not resumable
Kim Alvefur <zash@zash.se>
parents: 987
diff changeset
122 function session.close(...)
c15cea87036f mod_smacks: Wrap session:close() and make the session not resumable
Kim Alvefur <zash@zash.se>
parents: 987
diff changeset
123 if session.resumption_token then
c15cea87036f mod_smacks: Wrap session:close() and make the session not resumable
Kim Alvefur <zash@zash.se>
parents: 987
diff changeset
124 session_registry[session.resumption_token] = nil;
c15cea87036f mod_smacks: Wrap session:close() and make the session not resumable
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parents: 987
diff changeset
125 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
126 end
c15cea87036f mod_smacks: Wrap session:close() and make the session not resumable
Kim Alvefur <zash@zash.se>
parents: 987
diff changeset
127 return session_close(...);
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parents: 987
diff changeset
128 end
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diff changeset
129
345
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diff changeset
130 if not resume then
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diff changeset
131 session.handled_stanza_count = 0;
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diff changeset
132 add_filter(session, "stanzas/in", function (stanza)
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diff changeset
133 if not stanza.attr.xmlns then
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diff changeset
134 session.handled_stanza_count = session.handled_stanza_count + 1;
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parents: 263
diff changeset
135 session.log("debug", "Handled %d incoming stanzas", session.handled_stanza_count);
255
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parents: 220
diff changeset
136 end
345
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diff changeset
137 return stanza;
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parents: 263
diff changeset
138 end);
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parents: 263
diff changeset
139 end
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parents: 263
diff changeset
140
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parents: 263
diff changeset
141 return session;
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parents: 263
diff changeset
142 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
143
1298
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Florian Zeitz <florob@babelmonkeys.de>
parents: 1293
diff changeset
144 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)
Matthew Wild <mwild1@gmail.com>
parents: 590
diff changeset
145 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)
Matthew Wild <mwild1@gmail.com>
parents: 590
diff changeset
146 if not ok then
590
40b707d7a809 mod_smacks: Handle a client trying to <enable> twice, or trying to <enable> before resource binding (thanks Thijs Alkemade)
Matthew Wild <mwild1@gmail.com>
parents: 589
diff changeset
147 session.log("warn", "Failed to enable smacks: %s", err_text); -- TODO: XEP doesn't say we can send error text, should it?
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
148 session.send(st.stanza("failed", { xmlns = xmlns_sm }):tag(err, { xmlns = xmlns_errors}));
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parents: 589
diff changeset
149 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
150 end
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Matthew Wild <mwild1@gmail.com>
parents: 589
diff changeset
151
345
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parents: 263
diff changeset
152 module:log("debug", "Enabling stream management");
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parents: 263
diff changeset
153 session.smacks = true;
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diff changeset
154
1298
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diff changeset
155 wrap_session(session, false, xmlns_sm);
1343
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diff changeset
156
345
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diff changeset
157 local resume_token;
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parents: 263
diff changeset
158 local resume = stanza.attr.resume;
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parents: 263
diff changeset
159 if resume == "true" or resume == "1" then
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parents: 263
diff changeset
160 resume_token = uuid_generate();
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
161 session_registry[resume_token] = session;
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parents: 263
diff changeset
162 session.resumption_token = resume_token;
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parents: 263
diff changeset
163 end
576
44b69c3d5351 mod_smacks: Fix smacks on s2s connections, but disable it by default.
Kim Alvefur <zash@zash.se>
parents: 478
diff changeset
164 (session.sends2s or session.send)(st.stanza("enabled", { xmlns = xmlns_sm, id = resume_token, resume = resume }));
44b69c3d5351 mod_smacks: Fix smacks on s2s connections, but disable it by default.
Kim Alvefur <zash@zash.se>
parents: 478
diff changeset
165 return true;
1298
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 1293
diff changeset
166 end
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
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parents: 1293
diff changeset
167 module:hook_stanza(xmlns_sm2, "enable", function (session, stanza) return handle_enable(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
168 module:hook_stanza(xmlns_sm3, "enable", function (session, stanza) return handle_enable(session, stanza, xmlns_sm3); end, 100);
576
44b69c3d5351 mod_smacks: Fix smacks on s2s connections, but disable it by default.
Kim Alvefur <zash@zash.se>
parents: 478
diff changeset
169
1298
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Florian Zeitz <florob@babelmonkeys.de>
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diff changeset
170 function handle_enabled(session, stanza, xmlns_sm)
576
44b69c3d5351 mod_smacks: Fix smacks on s2s connections, but disable it by default.
Kim Alvefur <zash@zash.se>
parents: 478
diff changeset
171 module:log("debug", "Enabling stream management");
44b69c3d5351 mod_smacks: Fix smacks on s2s connections, but disable it by default.
Kim Alvefur <zash@zash.se>
parents: 478
diff changeset
172 session.smacks = true;
1343
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diff changeset
173
1298
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diff changeset
174 wrap_session(session, false, xmlns_sm);
576
44b69c3d5351 mod_smacks: Fix smacks on s2s connections, but disable it by default.
Kim Alvefur <zash@zash.se>
parents: 478
diff changeset
175
44b69c3d5351 mod_smacks: Fix smacks on s2s connections, but disable it by default.
Kim Alvefur <zash@zash.se>
parents: 478
diff changeset
176 -- FIXME Resume?
1343
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diff changeset
177
345
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parents: 263
diff changeset
178 return true;
1298
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
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parents: 1293
diff changeset
179 end
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
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parents: 1293
diff changeset
180 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
181 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
182
1298
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parents: 1293
diff changeset
183 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
184 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
185 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
186 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
187 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
188 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
189 -- Reply with <a>
255
9b9b089407b1 mod_smacks: Fix to reply to stream for s2s sessions
Matthew Wild <mwild1@gmail.com>
parents: 220
diff changeset
190 (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
191 return true;
1298
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diff changeset
192 end
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 1293
diff changeset
193 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
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parents: 1293
diff changeset
194 module:hook_stanza(xmlns_sm3, "r", function (origin, stanza) return handle_r(origin, stanza, xmlns_sm3); end);
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
195
1298
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diff changeset
196 function handle_a(origin, stanza)
160
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
197 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
198 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 :)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
199 -- 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
200 --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
201 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
202 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
203 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
204 end
b631c8a8b9e7 mod_smacks: Assert that the 'h' attribute is present and a number
Kim Alvefur <zash@zash.se>
parents: 1406
diff changeset
205 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
206 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
207 if handled_stanza_count > #queue then
1405
26a2092e289f mod_smacks: Log things attached to sessions instead of the module
Kim Alvefur <zash@zash.se>
parents: 1343
diff changeset
208 session.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
209 handled_stanza_count, #queue);
1405
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Kim Alvefur <zash@zash.se>
parents: 1343
diff changeset
210 session.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
211 for i=1,#queue do
1405
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Kim Alvefur <zash@zash.se>
parents: 1343
diff changeset
212 session.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
213 end
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 for i=1,math_min(handled_stanza_count,#queue) do
160
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parents:
diff changeset
216 t_remove(origin.outgoing_stanza_queue, 1);
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parents:
diff changeset
217 end
1406
7d76dd2310ef mod_smacks: Add more debug logging
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parents: 1405
diff changeset
218 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
219 origin.last_acknowledged_stanza = origin.last_acknowledged_stanza + 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
220 return true;
1298
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Florian Zeitz <florob@babelmonkeys.de>
parents: 1293
diff changeset
221 end
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 1293
diff changeset
222 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
223 module:hook_stanza(xmlns_sm3, "a", handle_a);
160
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parents:
diff changeset
224
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parents:
diff changeset
225 --TODO: Optimise... incoming stanzas should be handled by a per-session
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parents:
diff changeset
226 -- function that has a counter as an upvalue (no table indexing for increments,
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parents:
diff changeset
227 -- and won't slow non-198 sessions). We can also then remove the .handled flag
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parents:
diff changeset
228 -- on stanzas
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parents:
diff changeset
229
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parents:
diff changeset
230 function handle_unacked_stanzas(session)
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parents:
diff changeset
231 local queue = session.outgoing_stanza_queue;
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diff changeset
232 local error_attr = { type = "cancel" };
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parents:
diff changeset
233 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
234 session.outgoing_stanza_queue = {};
160
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parents:
diff changeset
235 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
236 local reply = st.reply(queue[i]);
160
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parents:
diff changeset
237 if reply.attr.to ~= session.full_jid then
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parents:
diff changeset
238 reply.attr.type = "error";
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parents:
diff changeset
239 reply:tag("error", error_attr)
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parents:
diff changeset
240 :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
Matthew Wild <mwild1@gmail.com>
parents: 255
diff changeset
241 core_process_stanza(session, reply);
160
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parents:
diff changeset
242 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
243 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
244 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
245 end
9a7671720dec mod_smacks: XEP-0198 Stream Management acks. Initial commit - very rough, useful mainly for testing at the moment, most certainly contains bugs :)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
246
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
247 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
248 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
249 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
250 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.
Matthew Wild <mwild1@gmail.com>
parents: 256
diff changeset
251 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.
Matthew Wild <mwild1@gmail.com>
parents: 256
diff changeset
252 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
253 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.
Matthew Wild <mwild1@gmail.com>
parents: 256
diff changeset
254 handle_unacked_stanzas(session);
160
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parents:
diff changeset
255 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
256 else
586
f733e7599ed6 mod_smacks: Add logging to hibernation and session destruction (thanks darkrain)
Matthew Wild <mwild1@gmail.com>
parents: 576
diff changeset
257 session.log("debug", "mod_smacks hibernating session for up to %d seconds", resume_timeout);
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
258 local hibernate_time = os_time(); -- Track the time we went into hibernation
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
259 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
260 local resumption_token = session.resumption_token;
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
261 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
262 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
263 -- 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)
Matthew Wild <mwild1@gmail.com>
parents: 345
diff changeset
264 -- 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
265 -- (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)
Matthew Wild <mwild1@gmail.com>
parents: 345
diff changeset
266 -- 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
267 local curr_session = full_sessions[session.full_jid];
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
268 if false and session.destroyed then
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
269 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
270 elseif curr_session and curr_session.resumption_token == resumption_token
345
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parents: 263
diff changeset
271 -- Check the hibernate time still matches what we think it is,
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
272 -- 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
273 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
274 session.log("debug", "Destroying session for hibernating too long");
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
275 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
276 session.resumption_token = nil;
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
277 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
278 else
f733e7599ed6 mod_smacks: Add logging to hibernation and session destruction (thanks darkrain)
Matthew Wild <mwild1@gmail.com>
parents: 576
diff changeset
279 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
280 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
281 end);
622
ce39df945de1 mod_smacks: Use pre-resource-unbind (0.9 feature) to fix reloadability and multiple host support
Matthew Wild <mwild1@gmail.com>
parents: 595
diff changeset
282 return true; -- Postpone destruction for now
160
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parents:
diff changeset
283 end
1343
7dbde05b48a9 all the things: Remove trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 1325
diff changeset
284
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
285 end
622
ce39df945de1 mod_smacks: Use pre-resource-unbind (0.9 feature) to fix reloadability and multiple host support
Matthew Wild <mwild1@gmail.com>
parents: 595
diff changeset
286 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
287
1298
659da45a2b4b mod_smacks: Handle both version 2 and version 3 namespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 1293
diff changeset
288 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
289 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
290 session.log("warn", "Tried to resume after resource binding");
1298
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Florian Zeitz <florob@babelmonkeys.de>
parents: 1293
diff changeset
291 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
292 :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
293 );
720b8268778e mod_smacks: Don't allow steam resumption onto a stream after resource binding
Kim Alvefur <zash@zash.se>
parents: 908
diff changeset
294 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
295 end
720b8268778e mod_smacks: Don't allow steam resumption onto a stream after resource binding
Kim Alvefur <zash@zash.se>
parents: 908
diff changeset
296
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
297 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
298 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
299 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
300 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
301 session.send(st.stanza("failed", { xmlns = xmlns_sm })
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
302 :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
303 );
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 elseif session.username == original_session.username
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Matthew Wild <mwild1@gmail.com>
parents: 263
diff changeset
305 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
306 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
Matthew Wild <mwild1@gmail.com>
parents: 263
diff changeset
307 -- 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
308 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
309 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
310 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
311 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
312 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
313 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
314 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
Matthew Wild <mwild1@gmail.com>
parents: 263
diff changeset
315 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
Matthew Wild <mwild1@gmail.com>
parents: 263
diff changeset
316 original_session.send = session.send;
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
317 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
318 original_session.secure = session.secure;
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319 original_session.hibernating = nil;
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320 local filter = original_session.filter;
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321 local stream = session.stream;
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322 local log = session.log;
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323 function original_session.data(data)
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324 data = filter("bytes/in", data);
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325 if data then
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326 local ok, err = stream:feed(data);
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327 if ok then return; end
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328 log("debug", "Received invalid XML (%s) %d bytes: %s", tostring(err), #data, data:sub(1, 300):gsub("[\r\n]+", " "):gsub("[%z\1-\31]", "_"));
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329 original_session:close("xml-not-well-formed");
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330 end
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331 end
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332 wrap_session(original_session, true, xmlns_sm);
345
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333 -- Inform xmppstream of the new session (passed to its callbacks)
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334 stream:set_session(original_session);
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335 -- Similar for connlisteners
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336 c2s_sessions[session.conn] = original_session;
345
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337
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338 session.send(st.stanza("resumed", { xmlns = xmlns_sm,
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339 h = original_session.handled_stanza_count, previd = id }));
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340
345
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341 -- Fake an <a> with the h of the <resume/> from the client
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342 original_session:dispatch_stanza(st.stanza("a", { xmlns = xmlns_sm,
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343 h = stanza.attr.h }));
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344
345
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345 -- Ok, we need to re-send any stanzas that the client didn't see
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346 -- ...they are what is now left in the outgoing stanza queue
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347 local queue = original_session.outgoing_stanza_queue;
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348 session.log("debug", "#queue = %d", #queue);
345
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349 for i=1,#queue do
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350 session.send(queue[i]);
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351 end
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352 session.log("debug", "#queue = %d -- after send", #queue);
345
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353 else
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354 module:log("warn", "Client %s@%s[%s] tried to resume stream for %s@%s[%s]",
345
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355 session.username or "?", session.host or "?", session.type,
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356 original_session.username or "?", original_session.host or "?", original_session.type);
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357 session.send(st.stanza("failed", { xmlns = xmlns_sm })
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358 :tag("not-authorized", { xmlns = xmlns_errors }));
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359 end
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360 return true;
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361 end
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362 module:hook_stanza(xmlns_sm2, "resume", function (session, stanza) return handle_resume(session, stanza, xmlns_sm2); end);
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363 module:hook_stanza(xmlns_sm3, "resume", function (session, stanza) return handle_resume(session, stanza, xmlns_sm3); end);