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bosh.lua

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bosh.lua @ 490:6b2f31da9610

Update for new Prosody module namespace
author Kim Alvefur <zash@zash.se>
date Sat, 20 May 2023 20:48:03 +0200
parent 411:db462d4feb44
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rev   line source
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1
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2 local new_xmpp_stream = require "prosody.util.xmppstream".new;
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3 local st = require "prosody.util.stanza";
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4 local http = require "prosody.net.http";
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6 local stream_mt = setmetatable({}, { __index = verse.stream_mt });
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7 stream_mt.__index = stream_mt;
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8
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9 local xmlns_stream = "http://etherx.jabber.org/streams";
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10 local xmlns_bosh = "http://jabber.org/protocol/httpbind";
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12 local reconnect_timeout = 5;
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14 function verse.new_bosh(logger, url)
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15 local stream = {
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16 bosh_conn_pool = {};
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17 bosh_waiting_requests = {};
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18 bosh_rid = math.random(1,999999);
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19 bosh_outgoing_buffer = {};
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20 bosh_url = url;
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21 conn = {};
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22 };
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23 function stream:reopen()
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24 self.bosh_need_restart = true;
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25 self:flush();
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26 end
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27 local conn = verse.new(logger, stream);
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28 return setmetatable(conn, stream_mt);
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29 end
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31 function stream_mt:connect()
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32 self:_send_session_request();
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33 end
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35 function stream_mt:send(data)
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36 self:debug("Putting into BOSH send buffer: %s", tostring(data));
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37 self.bosh_outgoing_buffer[#self.bosh_outgoing_buffer+1] = st.clone(data);
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38 self:flush(); --TODO: Optimize by doing this on next tick (give a chance for data to buffer)
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39 end
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41 function stream_mt:flush()
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42 if self.connected
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43 and #self.bosh_waiting_requests < self.bosh_max_requests
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44 and (#self.bosh_waiting_requests == 0
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45 or #self.bosh_outgoing_buffer > 0
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46 or self.bosh_need_restart) then
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47 self:debug("Flushing...");
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48 local payload = self:_make_body();
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49 local buffer = self.bosh_outgoing_buffer;
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50 for i, stanza in ipairs(buffer) do
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51 payload:add_child(stanza);
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52 buffer[i] = nil;
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53 end
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54 self:_make_request(payload);
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55 else
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56 self:debug("Decided not to flush.");
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57 end
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58 end
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60 function stream_mt:_make_request(payload)
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61 local request, err = http.request(self.bosh_url, { body = tostring(payload) }, function (response, code, request)
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62 if code ~= 0 then
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63 self.inactive_since = nil;
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64 return self:_handle_response(response, code, request);
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65 end
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66
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67 -- Connection issues, we need to retry this request
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68 local time = os.time();
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69 if not self.inactive_since then
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70 self.inactive_since = time; -- So we know when it is time to give up
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71 elseif time - self.inactive_since > self.bosh_max_inactivity then
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72 return self:_disconnected();
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73 else
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74 self:debug("%d seconds left to reconnect, retrying in %d seconds...",
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75 self.bosh_max_inactivity - (time - self.inactive_since), reconnect_timeout);
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76 end
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77
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78 -- Set up reconnect timer
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79 timer.add_task(reconnect_timeout, function ()
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80 self:debug("Retrying request...");
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81 -- Remove old request
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82 for i, waiting_request in ipairs(self.bosh_waiting_requests) do
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83 if waiting_request == request then
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84 table.remove(self.bosh_waiting_requests, i);
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85 break;
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86 end
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87 end
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88 self:_make_request(payload);
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89 end);
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90 end);
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91 if request then
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92 table.insert(self.bosh_waiting_requests, request);
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93 else
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94 self:warn("Request failed instantly: %s", err);
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95 end
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96 end
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97
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98 function stream_mt:_disconnected()
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99 self.connected = nil;
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100 self:event("disconnected");
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101 end
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102
87
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103 function stream_mt:_send_session_request()
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104 local body = self:_make_body();
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105
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106 -- XEP-0124
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107 body.attr.hold = "1";
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108 body.attr.wait = "60";
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109 body.attr["xml:lang"] = "en";
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110 body.attr.ver = "1.6";
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111
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112 -- XEP-0206
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113 body.attr.from = self.jid;
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114 body.attr.to = self.host;
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115 body.attr.secure = 'true';
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116
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117 http.request(self.bosh_url, { body = tostring(body) }, function (response, code)
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118 if code == 0 then
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119 -- Failed to connect
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120 return self:_disconnected();
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121 end
87
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122 -- Handle session creation response
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123 local payload = self:_parse_response(response)
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124 if not payload then
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125 self:warn("Invalid session creation response");
93
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126 self:_disconnected();
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127 return;
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128 end
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129 self.bosh_sid = payload.attr.sid; -- Session id
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130 self.bosh_wait = tonumber(payload.attr.wait); -- How long the server may hold connections for
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131 self.bosh_hold = tonumber(payload.attr.hold); -- How many connections the server may hold
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132 self.bosh_max_inactivity = tonumber(payload.attr.inactivity); -- Max amount of time with no connections
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133 self.bosh_max_requests = tonumber(payload.attr.requests) or self.bosh_hold; -- Max simultaneous requests we can make
87
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134 self.connected = true;
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135 self:event("connected");
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136 self:_handle_response_payload(payload);
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137 end);
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138 end
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139
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140 function stream_mt:_handle_response(response, code, request)
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141 if self.bosh_waiting_requests[1] ~= request then
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142 self:warn("Server replied to request that wasn't the oldest");
93
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143 for i, waiting_request in ipairs(self.bosh_waiting_requests) do
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144 if waiting_request == request then
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145 self.bosh_waiting_requests[i] = nil;
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146 break;
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147 end
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148 end
87
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149 else
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150 table.remove(self.bosh_waiting_requests, 1);
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151 end
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152 local payload = self:_parse_response(response);
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153 if payload then
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154 self:_handle_response_payload(payload);
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155 end
93
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156 self:flush();
87
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157 end
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158
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159 function stream_mt:_handle_response_payload(payload)
261
c1404c69dec9 verse.bosh: Fix to loop over every child tag (childtags() is now too namespace-aware for this purpose)
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parents: 161
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160 local stanzas = payload.tags;
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parents: 161
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161 for i = 1, #stanzas do
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162 local stanza = stanzas[i];
87
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163 if stanza.attr.xmlns == xmlns_stream then
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164 self:event("stream-"..stanza.name, stanza);
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165 elseif stanza.attr.xmlns then
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166 self:event("stream/"..stanza.attr.xmlns, stanza);
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167 else
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168 self:event("stanza", stanza);
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169 end
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170 end
93
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171 if payload.attr.type == "terminate" then
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172 self:_disconnected({reason = payload.attr.condition});
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173 end
87
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174 end
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175
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176 local stream_callbacks = {
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177 stream_ns = "http://jabber.org/protocol/httpbind", stream_tag = "body",
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178 default_ns = "jabber:client",
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179 streamopened = function (session, attr) session.notopen = nil; session.payload = verse.stanza("body", attr); return true; end;
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180 handlestanza = function (session, stanza) session.payload:add_child(stanza); end;
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181 };
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182 function stream_mt:_parse_response(response)
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183 self:debug("Parsing response: %s", response);
93
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184 if response == nil then
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185 self:debug("%s", debug.traceback());
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186 self:_disconnected();
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187 return;
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188 end
262
f47afb171e6e verse.bosh: Minor change to pass Verse stream to stream callbacks (though it isn't currently used by them)
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parents: 261
diff changeset
189 local session = { notopen = true, stream = self };
161
b177bcea2006 squishy, verse.client, verse.component, verse.bosh: Port to util.xmppstream instead of xmlhandlers which has been removed from Prosody. Also remove util.ztact from squishy for the same reason.
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parents: 93
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190 local stream = new_xmpp_stream(session, stream_callbacks);
b177bcea2006 squishy, verse.client, verse.component, verse.bosh: Port to util.xmppstream instead of xmlhandlers which has been removed from Prosody. Also remove util.ztact from squishy for the same reason.
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191 stream:feed(response);
87
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192 return session.payload;
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193 end
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194
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195 function stream_mt:_make_body()
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196 self.bosh_rid = self.bosh_rid + 1;
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197 local body = verse.stanza("body", {
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198 xmlns = xmlns_bosh;
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199 content = "text/xml; charset=utf-8";
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200 sid = self.bosh_sid;
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201 rid = self.bosh_rid;
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202 });
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203 if self.bosh_need_restart then
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204 self.bosh_need_restart = nil;
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diff changeset
205 body.attr.restart = 'true';
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206 end
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207 return body;
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diff changeset
208 end