Software /
code /
prosody
Annotate
plugins/mod_bosh.lua @ 1544:c7f0938bc33e
net.server: Fix copyright header line endings and text
author | Matthew Wild <mwild1@gmail.com> |
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date | Sun, 12 Jul 2009 20:32:38 +0100 |
parent | 1541:591732da1306 |
child | 1551:c6646e806d18 |
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 |
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10 module.host = "*" -- Global module |
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11 |
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12 local hosts = _G.hosts; |
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13 local lxp = require "lxp"; |
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14 local init_xmlhandlers = require "core.xmlhandlers" |
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15 local server = require "net.server"; |
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16 local httpserver = require "net.httpserver"; |
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17 local sm = require "core.sessionmanager"; |
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18 local sm_destroy_session = sm.destroy_session; |
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19 local new_uuid = require "util.uuid".generate; |
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20 local fire_event = require "core.eventmanager".fire_event; |
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21 local core_process_stanza = core_process_stanza; |
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22 local st = require "util.stanza"; |
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23 local logger = require "util.logger"; |
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24 local log = logger.init("mod_bosh"); |
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25 local stream_callbacks = { stream_tag = "http://jabber.org/protocol/httpbind|body" }; |
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26 local config = require "core.configmanager"; |
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27 local xmlns_bosh = "http://jabber.org/protocol/httpbind"; -- (hard-coded into a literal in session.send) |
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28 |
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29 local BOSH_DEFAULT_HOLD = tonumber(config.get("*", "core", "bosh_default_hold")) or 1; |
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30 local BOSH_DEFAULT_INACTIVITY = tonumber(config.get("*", "core", "bosh_max_inactivity")) or 60; |
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31 local BOSH_DEFAULT_POLLING = tonumber(config.get("*", "core", "bosh_max_polling")) or 5; |
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32 local BOSH_DEFAULT_REQUESTS = tonumber(config.get("*", "core", "bosh_max_requests")) or 2; |
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33 local BOSH_DEFAULT_MAXPAUSE = tonumber(config.get("*", "core", "bosh_max_pause")) or 300; |
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34 |
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35 local default_headers = { ["Content-Type"] = "text/xml; charset=utf-8" }; |
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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), "|"); |
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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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115 local session_close_reply = { headers = default_headers, body = st.stanza("body", { xmlns = xmlns_bosh, type = "terminate" }), attr = {} }; |
684
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116 local function bosh_close_stream(session, reason) |
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117 (session.log or log)("info", "BOSH client disconnected"); |
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118 session_close_reply.attr.condition = reason; |
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119 local session_close_reply = tostring(session_close_reply); |
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120 for _, held_request in ipairs(session.requests) do |
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121 held_request:send(session_close_reply); |
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122 held_request:destroy(); |
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|
123 end |
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124 sessions[session.sid] = nil; |
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|
125 sm_destroy_session(session); |
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126 end |
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127 |
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128 function stream_callbacks.streamopened(request, attr) |
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129 log("debug", "BOSH body open (sid: %s)", attr.sid); |
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130 local sid = attr.sid |
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131 if not sid then |
679
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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:
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132 -- New session request |
684
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133 request.notopen = nil; -- Signals that we accept this opening tag |
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|
134 |
636
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135 -- TODO: Sanity checks here (rid, to, known host, etc.) |
684
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diff
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|
136 if not hosts[attr.to] then |
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parents:
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diff
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|
137 -- Unknown host |
1048
45fc590539cd
mod_bosh: Add log message for clients connecting to unknown host
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1047
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|
138 log("debug", "BOSH client tried to connect to unknown host: %s", tostring(attr.to)); |
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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parents:
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|
139 session_close_reply.attr.condition = "host-unknown"; |
866
8958fe4b2391
mod_bosh: Set Content-Type in response headers
Matthew Wild <mwild1@gmail.com>
parents:
816
diff
changeset
|
140 request:send{ headers = default_headers, body = tostring(session_close_reply) }; |
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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parents:
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|
141 request.notopen = nil |
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142 return; |
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diff
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|
143 end |
636
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|
144 |
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145 -- New session |
763
8e77a39826c2
mod_bosh: No need to tostring() uuids now
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725
diff
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|
146 sid = new_uuid(); |
636
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147 local session = { type = "c2s_unauthed", conn = {}, sid = sid, rid = attr.rid, host = attr.to, bosh_version = attr.ver, bosh_wait = attr.wait, streamid = sid, |
679
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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
Matthew Wild <mwild1@gmail.com>
parents:
660
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|
148 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
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|
149 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
|
150 dispatch_stanza = core_process_stanza, log = logger.init("bosh"..sid), secure = request.secure }; |
636
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|
151 sessions[sid] = session; |
1109
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|
152 |
636
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153 log("info", "New BOSH session, assigned it sid '%s'", sid); |
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|
154 local r, send_buffer = session.requests, session.send_buffer; |
866
8958fe4b2391
mod_bosh: Set Content-Type in response headers
Matthew Wild <mwild1@gmail.com>
parents:
816
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changeset
|
155 local response = { headers = default_headers } |
636
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diff
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|
156 function session.send(s) |
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|
157 log("debug", "Sending BOSH data: %s", tostring(s)); |
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158 local oldest_request = r[1]; |
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|
159 while oldest_request and oldest_request.destroyed do |
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|
160 t_remove(r, 1); |
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|
161 waiting_requests[oldest_request] = nil; |
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|
162 oldest_request = r[1]; |
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|
163 end |
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|
164 if oldest_request then |
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|
165 log("debug", "We have an open request, so using that to send with"); |
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parents:
diff
changeset
|
166 response.body = t_concat{"<body xmlns='http://jabber.org/protocol/httpbind' sid='", sid, "' xmlns:stream = 'http://etherx.jabber.org/streams'>", tostring(s), "</body>" }; |
9c9c671ecc50
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parents:
diff
changeset
|
167 oldest_request:send(response); |
771
ecdf72f9b085
Remove redundant logging and debug printing from mod_bosh
Matthew Wild <mwild1@gmail.com>
parents:
763
diff
changeset
|
168 --log("debug", "Sent"); |
636
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parents:
diff
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|
169 if oldest_request.stayopen then |
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parents:
diff
changeset
|
170 if #r>1 then |
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parents:
diff
changeset
|
171 -- Move front request to back |
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diff
changeset
|
172 t_insert(r, oldest_request); |
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|
173 t_remove(r, 1); |
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parents:
diff
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|
174 end |
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parents:
diff
changeset
|
175 else |
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parents:
diff
changeset
|
176 log("debug", "Destroying the request now..."); |
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parents:
diff
changeset
|
177 oldest_request:destroy(); |
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parents:
diff
changeset
|
178 t_remove(r, 1); |
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parents:
diff
changeset
|
179 end |
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parents:
diff
changeset
|
180 elseif s ~= "" then |
9c9c671ecc50
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parents:
diff
changeset
|
181 log("debug", "Saved to send buffer because there are %d open requests", #r); |
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parents:
diff
changeset
|
182 -- Hmm, no requests are open :( |
9c9c671ecc50
Initial mod_bosh, works, kind of, but quite incomplete
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parents:
diff
changeset
|
183 t_insert(session.send_buffer, tostring(s)); |
9c9c671ecc50
Initial mod_bosh, works, kind of, but quite incomplete
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parents:
diff
changeset
|
184 log("debug", "There are now %d things in the send_buffer", #session.send_buffer); |
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parents:
diff
changeset
|
185 end |
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parents:
diff
changeset
|
186 end |
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parents:
diff
changeset
|
187 |
9c9c671ecc50
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parents:
diff
changeset
|
188 -- Send creation response |
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parents:
diff
changeset
|
189 |
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parents:
diff
changeset
|
190 local features = st.stanza("stream:features"); |
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parents:
diff
changeset
|
191 fire_event("stream-features", session, features); |
9c9c671ecc50
Initial mod_bosh, works, kind of, but quite incomplete
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parents:
diff
changeset
|
192 --xmpp:version='1.0' xmlns:xmpp='urn:xmpp:xbosh' |
9c9c671ecc50
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parents:
diff
changeset
|
193 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
|
194 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
|
195 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
|
196 ["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
|
197 request:send{ headers = default_headers, body = tostring(response) }; |
636
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Initial mod_bosh, works, kind of, but quite incomplete
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parents:
diff
changeset
|
198 |
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parents:
diff
changeset
|
199 request.sid = sid; |
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parents:
diff
changeset
|
200 return; |
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parents:
diff
changeset
|
201 end |
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parents:
diff
changeset
|
202 |
9c9c671ecc50
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parents:
diff
changeset
|
203 local session = sessions[sid]; |
9c9c671ecc50
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parents:
diff
changeset
|
204 if not session then |
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parents:
diff
changeset
|
205 -- Unknown sid |
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parents:
diff
changeset
|
206 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
|
207 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
|
208 request.notopen = nil; |
9c9c671ecc50
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parents:
diff
changeset
|
209 return; |
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parents:
diff
changeset
|
210 end |
9c9c671ecc50
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Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
211 |
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
|
212 if attr.type == "terminate" then |
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
|
213 -- Client wants to end this session |
684
b7d85c6a0002
Implement session:close() for BOSH, and add checking for attempts to connect to hosts we don't serve
Matthew Wild <mwild1@gmail.com>
parents:
683
diff
changeset
|
214 session:close(); |
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
|
215 request.notopen = nil; |
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
|
216 return; |
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
|
217 end |
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
|
218 |
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
|
219 -- If session was inactive, make sure it is now marked as not |
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
|
220 if #session.requests == 0 then |
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
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221 (session.log or log)("debug", "BOSH client now active again at %d", os_time()); |
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222 inactive_sessions[session] = nil; |
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223 end |
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224 |
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225 if session.notopen then |
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226 local features = st.stanza("stream:features"); |
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227 fire_event("stream-features", session, features); |
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228 session.send(features); |
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229 session.notopen = nil; |
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230 end |
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231 |
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232 request.notopen = nil; -- Signals that we accept this opening tag |
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233 t_insert(session.requests, request); |
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234 request.sid = sid; |
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235 end |
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236 |
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237 function stream_callbacks.handlestanza(request, stanza) |
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238 log("debug", "BOSH stanza received: %s\n", stanza:top_tag()); |
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239 local session = sessions[request.sid]; |
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240 if session then |
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241 if stanza.attr.xmlns == xmlns_bosh then |
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242 stanza.attr.xmlns = "jabber:client"; |
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243 end |
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244 core_process_stanza(session, stanza); |
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245 end |
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246 end |
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247 |
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248 function on_timer() |
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249 -- log("debug", "Checking for requests soon to timeout..."); |
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250 -- Identify requests timing out within the next few seconds |
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251 local now = os_time() + 3; |
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252 for request in pairs(waiting_requests) do |
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253 if request.reply_before <= now then |
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254 log("debug", "%s was soon to timeout, sending empty response", request.id); |
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255 -- Send empty response to let the |
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256 -- client know we're still here |
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257 if request.conn then |
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258 sessions[request.sid].send(""); |
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259 end |
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260 end |
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261 end |
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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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262 |
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263 now = now - 3; |
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Matthew Wild <mwild1@gmail.com>
parents:
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264 for session, inactive_since in pairs(inactive_sessions) do |
692
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265 if session.bosh_max_inactive then |
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266 if now - inactive_since > session.bosh_max_inactive then |
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267 (session.log or log)("debug", "BOSH client inactive too long, destroying session at %d", now); |
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268 sessions[session.sid] = nil; |
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269 inactive_sessions[session] = nil; |
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270 sm_destroy_session(session, "BOSH client silent for over "..session.bosh_max_inactive.." seconds"); |
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271 end |
693
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272 else |
679
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273 inactive_sessions[session] = nil; |
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274 end |
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275 end |
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276 end |
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277 |
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278 local ports = config.get(module.host, "core", "bosh_ports") or { 5280 }; |
1537
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279 httpserver.new_from_config(ports, handle_request); |
701
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|
280 |
660
b2c4a7ec31c6
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636
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|
281 server.addtimer(on_timer); |