Wed, 20 Apr 2011 01:32:25 +0200
squishy: Add the roster plugin
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verse: Include LuaRocks packages if we can
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2 | -- Use LuaRocks if available |
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3 | pcall(require, "luarocks.require"); |
0 | 4 | |
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5 | -- Load LuaSec if available |
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6 | pcall(require, "ssl"); |
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7 | |
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8 | local server = require "net.server"; |
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9 | local events = require "util.events"; |
0 | 10 | |
11 | module("verse", package.seeall); | |
12 | local verse = _M; | |
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13 | _M.server = server; |
0 | 14 | |
15 | local stream = {}; | |
16 | stream.__index = stream; | |
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17 | stream_mt = stream; |
0 | 18 | |
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19 | verse.plugins = {}; |
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20 | |
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21 | function verse.new(logger, base) |
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22 | local t = setmetatable(base or {}, stream); |
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23 | t.id = tostring(t):match("%x*$"); |
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24 | t:set_logger(logger, true); |
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25 | t.events = events.new(); |
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26 | t.plugins = {}; |
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27 | return t; |
0 | 28 | end |
29 | ||
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30 | verse.add_task = require "util.timer".add_task; |
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31 | |
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32 | verse.logger = logger.init; |
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33 | verse.log = verse.logger("verse"); |
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34 | |
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35 | function verse.set_logger(logger) |
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36 | verse.log = logger; |
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37 | server.setlogger(logger); |
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38 | end |
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39 | |
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40 | function verse.filter_log(levels, logger) |
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41 | local level_set = {}; |
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42 | for _, level in ipairs(levels) do |
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43 | level_set[level] = true; |
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44 | end |
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45 | return function (level, name, ...) |
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46 | if level_set[level] then |
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47 | return logger(level, name, ...); |
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48 | end |
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49 | end; |
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50 | end |
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51 | |
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52 | local function error_handler(err) |
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53 | verse.log("error", "Error: %s", err); |
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54 | verse.log("error", "Traceback: %s", debug.traceback()); |
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55 | end |
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56 | |
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57 | function verse.set_error_handler(new_error_handler) |
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58 | error_handler = new_error_handler; |
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59 | end |
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60 | |
0 | 61 | function verse.loop() |
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62 | return xpcall(server.loop, error_handler); |
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63 | end |
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64 | |
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65 | function verse.step() |
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66 | return xpcall(server.step, error_handler); |
0 | 67 | end |
68 | ||
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69 | function verse.quit() |
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70 | return server.setquitting(true); |
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71 | end |
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72 | |
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73 | function stream:connect(connect_host, connect_port) |
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74 | connect_host = connect_host or "localhost"; |
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75 | connect_port = tonumber(connect_port) or 5222; |
0 | 76 | |
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77 | -- Create and initiate connection |
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78 | local conn = socket.tcp() |
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79 | conn:settimeout(0); |
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80 | local success, err = conn:connect(connect_host, connect_port); |
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81 | |
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82 | if not success and err ~= "timeout" then |
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83 | self:warn("connect() to %s:%d failed: %s", connect_host, connect_port, err); |
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84 | return self:event("disconnected", { reason = err }) or false, err; |
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85 | end |
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86 | |
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87 | local conn = server.wrapclient(conn, connect_host, connect_port, new_listener(self), "*a"); |
0 | 88 | if not conn then |
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89 | self:warn("connection initialisation failed: %s", err); |
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90 | return self:event("disconnected", { reason = err }) or false, err; |
0 | 91 | end |
92 | ||
93 | self.conn = conn; | |
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94 | self.send = function (stream, data) |
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95 | self:event("outgoing", data); |
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96 | data = tostring(data); |
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97 | self:event("outgoing-raw", data); |
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98 | return conn:write(data); |
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99 | end; |
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100 | return true; |
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101 | end |
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102 | |
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103 | function stream:close() |
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104 | if not self.conn then |
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105 | verse.log("error", "Attempt to close disconnected connection - possibly a bug"); |
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106 | return; |
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107 | end |
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108 | local on_disconnect = self.conn.disconnect(); |
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109 | self.conn:close(); |
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110 | on_disconnect(conn, reason); |
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111 | end |
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112 | |
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113 | -- Logging functions |
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114 | function stream:debug(...) |
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115 | if self.logger and self.log.debug then |
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116 | return self.logger("debug", ...); |
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117 | end |
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118 | end |
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119 | |
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120 | function stream:warn(...) |
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121 | if self.logger and self.log.warn then |
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122 | return self.logger("warn", ...); |
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123 | end |
0 | 124 | end |
125 | ||
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126 | function stream:error(...) |
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127 | if self.logger and self.log.error then |
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128 | return self.logger("error", ...); |
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129 | end |
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130 | end |
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131 | |
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132 | function stream:set_logger(logger, levels) |
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133 | local old_logger = self.logger; |
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134 | if logger then |
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135 | self.logger = logger; |
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136 | end |
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137 | if levels then |
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138 | if levels == true then |
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139 | levels = { "debug", "info", "warn", "error" }; |
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140 | end |
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141 | self.log = {}; |
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142 | for _, level in ipairs(levels) do |
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143 | self.log[level] = true; |
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144 | end |
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145 | end |
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146 | return old_logger; |
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147 | end |
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148 | |
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149 | function stream_mt:set_log_levels(levels) |
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150 | self:set_logger(nil, levels); |
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151 | end |
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152 | |
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153 | -- Event handling |
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154 | function stream:event(name, ...) |
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155 | self:debug("Firing event: "..tostring(name)); |
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156 | return self.events.fire_event(name, ...); |
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157 | end |
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158 | |
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159 | function stream:hook(name, ...) |
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160 | return self.events.add_handler(name, ...); |
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161 | end |
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162 | |
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163 | function stream:unhook(name, handler) |
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164 | return self.events.remove_handler(name, handler); |
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165 | end |
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166 | |
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167 | function verse.eventable(object) |
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168 | object.events = events.new(); |
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169 | object.hook, object.unhook = stream.hook, stream.unhook; |
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170 | local fire_event = object.events.fire_event; |
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171 | function object:event(name, ...) |
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172 | return fire_event(name, ...); |
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173 | end |
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174 | return object; |
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175 | end |
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176 | |
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177 | function stream:add_plugin(name) |
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178 | if self.plugins[name] then return true; end |
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179 | if require("verse.plugins."..name) then |
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180 | local ok, err = verse.plugins[name](self); |
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181 | if ok ~= false then |
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182 | self:debug("Loaded %s plugin", name); |
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183 | self.plugins[name] = true; |
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184 | else |
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185 | self:warn("Failed to load %s plugin: %s", name, err); |
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186 | end |
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187 | end |
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188 | return self; |
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189 | end |
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190 | |
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191 | -- Listener factory |
0 | 192 | function new_listener(stream) |
193 | local conn_listener = {}; | |
194 | ||
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195 | function conn_listener.onconnect(conn) |
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196 | stream.connected = true; |
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197 | stream:event("connected"); |
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198 | end |
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199 | |
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200 | function conn_listener.onincoming(conn, data) |
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201 | stream:event("incoming-raw", data); |
0 | 202 | end |
203 | ||
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204 | function conn_listener.ondisconnect(conn, err) |
0 | 205 | stream.connected = false; |
206 | stream:event("disconnected", { reason = err }); | |
207 | end | |
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208 | |
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209 | function conn_listener.ondrain(conn) |
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210 | stream:event("drained"); |
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211 | end |
0 | 212 | |
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213 | function conn_listener.onstatus(conn, new_status) |
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214 | stream:event("status", new_status); |
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215 | end |
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216 | |
0 | 217 | return conn_listener; |
218 | end | |
219 | ||
220 | ||
221 | local log = require "util.logger".init("verse"); | |
222 | ||
223 | return verse; |