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plugins/mod_bosh.lua @ 2378:bc1ae371ad54
s2smanager: More whitespace
author | Matthew Wild <mwild1@gmail.com> |
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date | Thu, 17 Dec 2009 21:18:02 +0000 |
parent | 2373:13090fc6ad90 |
child | 2467:8098310d0dfd |
rev | line source |
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1 -- Prosody IM |
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2 -- Copyright (C) 2008-2009 Matthew Wild |
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3 -- Copyright (C) 2008-2009 Waqas Hussain |
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4 -- |
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5 -- This project is MIT/X11 licensed. Please see the |
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6 -- COPYING file in the source package for more information. |
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7 -- |
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8 |
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9 module.host = "*" -- Global module |
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10 |
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11 local hosts = _G.hosts; |
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12 local lxp = require "lxp"; |
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13 local init_xmlhandlers = require "core.xmlhandlers" |
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14 local server = require "net.server"; |
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15 local httpserver = require "net.httpserver"; |
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16 local sm = require "core.sessionmanager"; |
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17 local sm_destroy_session = sm.destroy_session; |
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18 local new_uuid = require "util.uuid".generate; |
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19 local fire_event = require "core.eventmanager".fire_event; |
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20 local core_process_stanza = core_process_stanza; |
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21 local st = require "util.stanza"; |
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22 local logger = require "util.logger"; |
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23 local log = logger.init("mod_bosh"); |
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24 |
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25 local xmlns_bosh = "http://jabber.org/protocol/httpbind"; -- (hard-coded into a literal in session.send) |
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26 local stream_callbacks = { stream_tag = "http://jabber.org/protocol/httpbind\1body", default_ns = xmlns_bosh }; |
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27 |
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28 local BOSH_DEFAULT_HOLD = tonumber(module:get_option("bosh_default_hold")) or 1; |
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29 local BOSH_DEFAULT_INACTIVITY = tonumber(module:get_option("bosh_max_inactivity")) or 60; |
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30 local BOSH_DEFAULT_POLLING = tonumber(module:get_option("bosh_max_polling")) or 5; |
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31 local BOSH_DEFAULT_REQUESTS = tonumber(module:get_option("bosh_max_requests")) or 2; |
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32 local BOSH_DEFAULT_MAXPAUSE = tonumber(module:get_option("bosh_max_pause")) or 300; |
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33 |
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34 local default_headers = { ["Content-Type"] = "text/xml; charset=utf-8" }; |
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35 local session_close_reply = { headers = default_headers, body = st.stanza("body", { xmlns = xmlns_bosh, type = "terminate" }), attr = {} }; |
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36 |
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37 local t_insert, t_remove, t_concat = table.insert, table.remove, table.concat; |
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38 local os_time = os.time; |
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39 |
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40 local sessions = {}; |
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41 local inactive_sessions = {}; -- Sessions which have no open requests |
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42 |
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43 -- Used to respond to idle sessions (those with waiting requests) |
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44 local waiting_requests = {}; |
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45 function on_destroy_request(request) |
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46 waiting_requests[request] = nil; |
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47 local session = sessions[request.sid]; |
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48 if session then |
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49 local requests = session.requests; |
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50 for i,r in pairs(requests) do |
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51 if r == request then requests[i] = nil; break; end |
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52 end |
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53 |
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54 -- If this session now has no requests open, mark it as inactive |
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55 if #requests == 0 and session.bosh_max_inactive and not inactive_sessions[session] then |
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56 inactive_sessions[session] = os_time(); |
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57 (session.log or log)("debug", "BOSH session marked as inactive at %d", inactive_sessions[session]); |
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58 end |
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59 end |
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60 end |
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61 |
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62 function handle_request(method, body, request) |
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63 if (not body) or request.method ~= "POST" then |
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64 return "<html><body>You really don't look like a BOSH client to me... what do you want?</body></html>"; |
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65 end |
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66 if not method then |
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67 log("debug", "Request %s suffered error %s", tostring(request.id), body); |
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68 return; |
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69 end |
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70 --log("debug", "Handling new request %s: %s\n----------", request.id, tostring(body)); |
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71 request.notopen = true; |
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72 request.log = log; |
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73 local parser = lxp.new(init_xmlhandlers(request, stream_callbacks), "\1"); |
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74 |
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75 parser:parse(body); |
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76 |
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77 local session = sessions[request.sid]; |
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78 if session then |
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79 local r = session.requests; |
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80 log("debug", "Session %s has %d out of %d requests open", request.sid, #r, session.bosh_hold); |
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81 log("debug", "and there are %d things in the send_buffer", #session.send_buffer); |
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82 if #r > session.bosh_hold then |
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83 -- We are holding too many requests, send what's in the buffer, |
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84 log("debug", "We are holding too many requests, so..."); |
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85 if #session.send_buffer > 0 then |
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86 log("debug", "...sending what is in the buffer") |
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87 session.send(t_concat(session.send_buffer)); |
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88 session.send_buffer = {}; |
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89 else |
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90 -- or an empty response |
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91 log("debug", "...sending an empty response"); |
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92 session.send(""); |
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93 end |
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94 elseif #session.send_buffer > 0 then |
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95 log("debug", "Session has data in the send buffer, will send now.."); |
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96 local resp = t_concat(session.send_buffer); |
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97 session.send_buffer = {}; |
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98 session.send(resp); |
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99 end |
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100 |
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101 if not request.destroyed and session.bosh_wait then |
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102 request.reply_before = os_time() + session.bosh_wait; |
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103 request.on_destroy = on_destroy_request; |
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104 waiting_requests[request] = true; |
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105 end |
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106 |
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107 log("debug", "Have nothing to say, so leaving request unanswered for now"); |
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108 return true; |
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109 end |
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110 end |
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111 |
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112 |
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113 local function bosh_reset_stream(session) session.notopen = true; end |
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114 |
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parents:
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changeset
|
115 local function bosh_close_stream(session, reason) |
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116 (session.log or log)("info", "BOSH client disconnected"); |
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117 session_close_reply.attr.condition = reason; |
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diff
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|
118 for _, held_request in ipairs(session.requests) do |
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119 held_request:send(session_close_reply); |
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120 held_request:destroy(); |
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diff
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121 end |
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Implement session:close() for BOSH, and add checking for attempts to connect to hosts we don't serve
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parents:
683
diff
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122 sessions[session.sid] = nil; |
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parents:
683
diff
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|
123 sm_destroy_session(session); |
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diff
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|
124 end |
636
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125 |
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126 function stream_callbacks.streamopened(request, attr) |
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127 log("debug", "BOSH body open (sid: %s)", attr.sid); |
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128 local sid = attr.sid |
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129 if not sid then |
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Numerous BOSH improvements... handle client disconnects, either explicit or implicit through inactivity; allow specifying BOSH default parameters through config; fix to prevent prematurely closing request connections in some cases, before they were replied to
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parents:
660
diff
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130 -- New session request |
684
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131 request.notopen = nil; -- Signals that we accept this opening tag |
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|
132 |
636
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133 -- TODO: Sanity checks here (rid, to, known host, etc.) |
684
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parents:
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diff
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|
134 if not hosts[attr.to] then |
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parents:
683
diff
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|
135 -- Unknown host |
1048
45fc590539cd
mod_bosh: Add log message for clients connecting to unknown host
Matthew Wild <mwild1@gmail.com>
parents:
1047
diff
changeset
|
136 log("debug", "BOSH client tried to connect to unknown host: %s", tostring(attr.to)); |
1633
7812459eeed7
mod_bosh: Fix error reply for host-unknown errors
Matthew Wild <mwild1@gmail.com>
parents:
1551
diff
changeset
|
137 session_close_reply.body.attr.condition = "host-unknown"; |
7812459eeed7
mod_bosh: Fix error reply for host-unknown errors
Matthew Wild <mwild1@gmail.com>
parents:
1551
diff
changeset
|
138 request:send(session_close_reply); |
684
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parents:
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diff
changeset
|
139 request.notopen = nil |
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Implement session:close() for BOSH, and add checking for attempts to connect to hosts we don't serve
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parents:
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|
140 return; |
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diff
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|
141 end |
636
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142 |
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143 -- New session |
763
8e77a39826c2
mod_bosh: No need to tostring() uuids now
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parents:
725
diff
changeset
|
144 sid = new_uuid(); |
1663
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145 local session = { type = "c2s_unauthed", conn = {}, sid = sid, rid = tonumber(attr.rid), host = attr.to, bosh_version = attr.ver, bosh_wait = attr.wait, streamid = sid, |
679
9506bf204b1a
Numerous BOSH improvements... handle client disconnects, either explicit or implicit through inactivity; allow specifying BOSH default parameters through config; fix to prevent prematurely closing request connections in some cases, before they were replied to
Matthew Wild <mwild1@gmail.com>
parents:
660
diff
changeset
|
146 bosh_hold = BOSH_DEFAULT_HOLD, bosh_max_inactive = BOSH_DEFAULT_INACTIVITY, |
1109
bb21eb3cd364
mod_bosh: Give BOSH sessions a logger (thanks Florob)
Matthew Wild <mwild1@gmail.com>
parents:
1049
diff
changeset
|
147 requests = { }, send_buffer = {}, reset_stream = bosh_reset_stream, close = bosh_close_stream, |
1541
591732da1306
mod_bosh: Mark a session as secure if it is created with HTTPS
Matthew Wild <mwild1@gmail.com>
parents:
1537
diff
changeset
|
148 dispatch_stanza = core_process_stanza, log = logger.init("bosh"..sid), secure = request.secure }; |
636
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parents:
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149 sessions[sid] = session; |
1109
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diff
changeset
|
150 |
636
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|
151 log("info", "New BOSH session, assigned it sid '%s'", sid); |
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|
152 local r, send_buffer = session.requests, session.send_buffer; |
866
8958fe4b2391
mod_bosh: Set Content-Type in response headers
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parents:
816
diff
changeset
|
153 local response = { headers = default_headers } |
636
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parents:
diff
changeset
|
154 function session.send(s) |
2099
73e083d01449
mod_bosh: Don't log response XML
Matthew Wild <mwild1@gmail.com>
parents:
2084
diff
changeset
|
155 --log("debug", "Sending BOSH data: %s", tostring(s)); |
636
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|
156 local oldest_request = r[1]; |
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|
157 while oldest_request and oldest_request.destroyed do |
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|
158 t_remove(r, 1); |
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|
159 waiting_requests[oldest_request] = nil; |
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|
160 oldest_request = r[1]; |
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|
161 end |
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|
162 if oldest_request then |
2099
73e083d01449
mod_bosh: Don't log response XML
Matthew Wild <mwild1@gmail.com>
parents:
2084
diff
changeset
|
163 log("debug", "We have an open request, so sending on that"); |
636
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parents:
diff
changeset
|
164 response.body = t_concat{"<body xmlns='http://jabber.org/protocol/httpbind' sid='", sid, "' xmlns:stream = 'http://etherx.jabber.org/streams'>", tostring(s), "</body>" }; |
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parents:
diff
changeset
|
165 oldest_request:send(response); |
771
ecdf72f9b085
Remove redundant logging and debug printing from mod_bosh
Matthew Wild <mwild1@gmail.com>
parents:
763
diff
changeset
|
166 --log("debug", "Sent"); |
636
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|
167 if oldest_request.stayopen then |
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diff
changeset
|
168 if #r>1 then |
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parents:
diff
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|
169 -- Move front request to back |
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parents:
diff
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|
170 t_insert(r, oldest_request); |
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diff
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|
171 t_remove(r, 1); |
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diff
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|
172 end |
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diff
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|
173 else |
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parents:
diff
changeset
|
174 log("debug", "Destroying the request now..."); |
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diff
changeset
|
175 oldest_request:destroy(); |
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parents:
diff
changeset
|
176 t_remove(r, 1); |
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parents:
diff
changeset
|
177 end |
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parents:
diff
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|
178 elseif s ~= "" then |
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parents:
diff
changeset
|
179 log("debug", "Saved to send buffer because there are %d open requests", #r); |
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diff
changeset
|
180 -- Hmm, no requests are open :( |
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parents:
diff
changeset
|
181 t_insert(session.send_buffer, tostring(s)); |
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parents:
diff
changeset
|
182 log("debug", "There are now %d things in the send_buffer", #session.send_buffer); |
9c9c671ecc50
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parents:
diff
changeset
|
183 end |
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parents:
diff
changeset
|
184 end |
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parents:
diff
changeset
|
185 |
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diff
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|
186 -- Send creation response |
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parents:
diff
changeset
|
187 |
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parents:
diff
changeset
|
188 local features = st.stanza("stream:features"); |
9c9c671ecc50
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diff
changeset
|
189 fire_event("stream-features", session, features); |
9c9c671ecc50
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parents:
diff
changeset
|
190 --xmpp:version='1.0' xmlns:xmpp='urn:xmpp:xbosh' |
9c9c671ecc50
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parents:
diff
changeset
|
191 local response = st.stanza("body", { xmlns = xmlns_bosh, |
679
9506bf204b1a
Numerous BOSH improvements... handle client disconnects, either explicit or implicit through inactivity; allow specifying BOSH default parameters through config; fix to prevent prematurely closing request connections in some cases, before they were replied to
Matthew Wild <mwild1@gmail.com>
parents:
660
diff
changeset
|
192 inactivity = tostring(BOSH_DEFAULT_INACTIVITY), polling = tostring(BOSH_DEFAULT_POLLING), requests = tostring(BOSH_DEFAULT_REQUESTS), hold = tostring(session.bosh_hold), maxpause = "120", |
1049
c476bceaf2db
mod_bosh: Put dummy authid in session creation response to keep JSJaC happy
Matthew Wild <mwild1@gmail.com>
parents:
1048
diff
changeset
|
193 sid = sid, authid = sid, ver = '1.6', from = session.host, secure = 'true', ["xmpp:version"] = "1.0", |
636
9c9c671ecc50
Initial mod_bosh, works, kind of, but quite incomplete
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parents:
diff
changeset
|
194 ["xmlns:xmpp"] = "urn:xmpp:xbosh", ["xmlns:stream"] = "http://etherx.jabber.org/streams" }):add_child(features); |
866
8958fe4b2391
mod_bosh: Set Content-Type in response headers
Matthew Wild <mwild1@gmail.com>
parents:
816
diff
changeset
|
195 request:send{ headers = default_headers, body = tostring(response) }; |
636
9c9c671ecc50
Initial mod_bosh, works, kind of, but quite incomplete
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parents:
diff
changeset
|
196 |
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parents:
diff
changeset
|
197 request.sid = sid; |
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parents:
diff
changeset
|
198 return; |
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parents:
diff
changeset
|
199 end |
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parents:
diff
changeset
|
200 |
9c9c671ecc50
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parents:
diff
changeset
|
201 local session = sessions[sid]; |
9c9c671ecc50
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parents:
diff
changeset
|
202 if not session then |
9c9c671ecc50
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parents:
diff
changeset
|
203 -- Unknown sid |
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parents:
diff
changeset
|
204 log("info", "Client tried to use sid '%s' which we don't know about", sid); |
866
8958fe4b2391
mod_bosh: Set Content-Type in response headers
Matthew Wild <mwild1@gmail.com>
parents:
816
diff
changeset
|
205 request:send{ headers = default_headers, body = tostring(st.stanza("body", { xmlns = xmlns_bosh, type = "terminate", condition = "item-not-found" })) }; |
636
9c9c671ecc50
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parents:
diff
changeset
|
206 request.notopen = nil; |
9c9c671ecc50
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parents:
diff
changeset
|
207 return; |
9c9c671ecc50
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parents:
diff
changeset
|
208 end |
9c9c671ecc50
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parents:
diff
changeset
|
209 |
1663
b30c4d0bbe84
mod_bosh: Basic handling of rids (more to come)
Matthew Wild <mwild1@gmail.com>
parents:
1662
diff
changeset
|
210 if session.rid then |
b30c4d0bbe84
mod_bosh: Basic handling of rids (more to come)
Matthew Wild <mwild1@gmail.com>
parents:
1662
diff
changeset
|
211 local rid = tonumber(attr.rid); |
1664
6587b6c2678e
mod_bosh: Calculate rid difference just once
Matthew Wild <mwild1@gmail.com>
parents:
1663
diff
changeset
|
212 local diff = rid - session.rid; |
6587b6c2678e
mod_bosh: Calculate rid difference just once
Matthew Wild <mwild1@gmail.com>
parents:
1663
diff
changeset
|
213 if diff > 1 then |
1663
b30c4d0bbe84
mod_bosh: Basic handling of rids (more to come)
Matthew Wild <mwild1@gmail.com>
parents:
1662
diff
changeset
|
214 session.log("warn", "rid too large (means a request was lost). Last rid: %d New rid: %s", session.rid, attr.rid); |
1664
6587b6c2678e
mod_bosh: Calculate rid difference just once
Matthew Wild <mwild1@gmail.com>
parents:
1663
diff
changeset
|
215 elseif diff <= 0 then |
1663
b30c4d0bbe84
mod_bosh: Basic handling of rids (more to come)
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parents:
1662
diff
changeset
|
216 -- Repeated, ignore |
b30c4d0bbe84
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parents:
1662
diff
changeset
|
217 session.log("debug", "rid repeated (on request %s), ignoring: %d", request.id, session.rid); |
b30c4d0bbe84
mod_bosh: Basic handling of rids (more to come)
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parents:
1662
diff
changeset
|
218 request.notopen = nil; |
b30c4d0bbe84
mod_bosh: Basic handling of rids (more to come)
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parents:
1662
diff
changeset
|
219 t_insert(session.requests, request); |
b30c4d0bbe84
mod_bosh: Basic handling of rids (more to come)
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parents:
1662
diff
changeset
|
220 return; |
b30c4d0bbe84
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parents:
1662
diff
changeset
|
221 end |
b30c4d0bbe84
mod_bosh: Basic handling of rids (more to come)
Matthew Wild <mwild1@gmail.com>
parents:
1662
diff
changeset
|
222 session.rid = rid; |
b30c4d0bbe84
mod_bosh: Basic handling of rids (more to come)
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parents:
1662
diff
changeset
|
223 end |
b30c4d0bbe84
mod_bosh: Basic handling of rids (more to come)
Matthew Wild <mwild1@gmail.com>
parents:
1662
diff
changeset
|
224 |
679
9506bf204b1a
Numerous BOSH improvements... handle client disconnects, either explicit or implicit through inactivity; allow specifying BOSH default parameters through config; fix to prevent prematurely closing request connections in some cases, before they were replied to
Matthew Wild <mwild1@gmail.com>
parents:
660
diff
changeset
|
225 if attr.type == "terminate" then |
9506bf204b1a
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226 -- Client wants to end this session |
684
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Implement session:close() for BOSH, and add checking for attempts to connect to hosts we don't serve
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227 session:close(); |
679
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228 request.notopen = nil; |
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229 return; |
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230 end |
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231 |
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232 -- If session was inactive, make sure it is now marked as not |
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233 if #session.requests == 0 then |
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234 (session.log or log)("debug", "BOSH client now active again at %d", os_time()); |
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235 inactive_sessions[session] = nil; |
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236 end |
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|
237 |
636
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238 if session.notopen then |
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239 local features = st.stanza("stream:features"); |
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240 fire_event("stream-features", session, features); |
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241 session.send(features); |
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242 session.notopen = nil; |
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243 end |
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244 |
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245 request.notopen = nil; -- Signals that we accept this opening tag |
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246 t_insert(session.requests, request); |
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247 request.sid = sid; |
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248 end |
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249 |
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250 function stream_callbacks.handlestanza(request, stanza) |
725
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Replacing pretty_print() with top_tag() for logging
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251 log("debug", "BOSH stanza received: %s\n", stanza:top_tag()); |
636
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252 local session = sessions[request.sid]; |
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253 if session then |
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254 if stanza.attr.xmlns == xmlns_bosh then |
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255 stanza.attr.xmlns = "jabber:client"; |
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256 end |
2373
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257 session.ip = request.handler:ip(); |
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258 core_process_stanza(session, stanza); |
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259 end |
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260 end |
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261 |
1864
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262 local dead_sessions = {}; |
636
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263 function on_timer() |
660
b2c4a7ec31c6
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636
diff
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|
264 -- log("debug", "Checking for requests soon to timeout..."); |
636
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265 -- Identify requests timing out within the next few seconds |
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266 local now = os_time() + 3; |
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267 for request in pairs(waiting_requests) do |
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268 if request.reply_before <= now then |
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269 log("debug", "%s was soon to timeout, sending empty response", request.id); |
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270 -- Send empty response to let the |
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271 -- client know we're still here |
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272 if request.conn then |
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273 sessions[request.sid].send(""); |
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274 end |
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275 end |
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276 end |
679
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277 |
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278 now = now - 3; |
1864
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279 local n_dead_sessions = 0; |
679
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parents:
660
diff
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|
280 for session, inactive_since in pairs(inactive_sessions) do |
692
4a218377f4e3
BOSH: Fix for error when closed session was in inactive_sessions list
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|
281 if session.bosh_max_inactive then |
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|
282 if now - inactive_since > session.bosh_max_inactive then |
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|
283 (session.log or log)("debug", "BOSH client inactive too long, destroying session at %d", now); |
4a218377f4e3
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|
284 sessions[session.sid] = nil; |
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|
285 inactive_sessions[session] = nil; |
1864
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|
286 n_dead_sessions = n_dead_sessions + 1; |
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|
287 dead_sessions[n_dead_sessions] = session; |
692
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684
diff
changeset
|
288 end |
693
d8b793e612a9
BOSH: Make previous fix a bit more efficient
Matthew Wild <mwild1@gmail.com>
parents:
692
diff
changeset
|
289 else |
679
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diff
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|
290 inactive_sessions[session] = nil; |
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parents:
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diff
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|
291 end |
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660
diff
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|
292 end |
1864
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|
293 |
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|
294 for i=1,n_dead_sessions do |
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|
295 local session = dead_sessions[i]; |
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|
296 dead_sessions[i] = nil; |
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|
297 sm_destroy_session(session, "BOSH client silent for over "..session.bosh_max_inactive.." seconds"); |
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|
298 end |
636
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299 end |
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|
300 |
701
dc67e3cffff4
BOSH: Allow BOSH servers to be configured through config file
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693
diff
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|
301 |
2354
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Waqas Hussain <waqas20@gmail.com>
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diff
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|
302 local function setup() |
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diff
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|
303 local ports = module:get_option("bosh_ports") or { 5280 }; |
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|
304 httpserver.new_from_config(ports, handle_request, { base = "http-bind" }); |
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diff
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|
305 server.addtimer(on_timer); |
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|
306 end |
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diff
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|
307 if prosody.start_time then -- already started |
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diff
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|
308 setup(); |
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|
309 else |
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diff
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|
310 prosody.events.add_handler("server-started", setup); |
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diff
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|
311 end |