verse
931bf313c691
init.lua

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init.lua @ 241:931bf313c691

verse: Format messages before passing them to custom log handler
author Matthew Wild <mwild1@gmail.com>
date Sun, 27 Nov 2011 22:59:59 +0000
parent 240:e27bf761bea6
child 242:ab4773b0ef5e
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caf260adc453 Beginning of new verse
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ec6b0b94826c 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");
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a28540d4117a verse: Load LuaSec if possible
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5 -- Load LuaSec if available
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6 pcall(require, "ssl");
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9c96318913f7 Revert module names throughout to their Prosody equivalents
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8 local server = require "net.server";
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9 local events = require "util.events";
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d158c97556b4 verse: require('util.logger') (besides being correct, also fixes a silly bug when loading verse twice)
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10 local logger = require "util.logger";
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12 module("verse", package.seeall);
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13 local verse = _M;
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cbcd45be11a8 verse: Expose net.server as verse.server
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14 _M.server = server;
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16 local stream = {};
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17 stream.__index = stream;
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18 stream_mt = stream;
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372ddb5900d3 verse: Support for loading plugins
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20 verse.plugins = {};
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21
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22 local max_id = 0;
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37396504de5f verse: Multiple changes to allow controlling logging for both verse and streams
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24 function verse.new(logger, base)
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25 local t = setmetatable(base or {}, stream);
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26 max_id = max_id + 1;
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27 t.id = tostring(max_id);
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28 t.logger = logger or verse.new_logger("stream"..t.id);
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29 t.events = events.new();
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30 t.plugins = {};
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31 return t;
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32 end
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6006e6bb1c28 verse: Add verse.add_task(delay, callback) to add timer functions using util.timer
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34 verse.add_task = require "util.timer".add_task;
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36 verse.logger = logger.init; -- COMPAT: Deprecated
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d75a209e57fc verse: verse.logger() -> verse.new_logger()
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37 verse.new_logger = logger.init;
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b46921de1e03 verse: Add verse.log() to log a message using the default logger. Also add verse.set_error_handler() to, er, set an error handler.
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38 verse.log = verse.logger("verse");
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931bf313c691 verse: Format messages before passing them to custom log handler
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40 local function format(format, ...)
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41 local n, arg, maxn = 0, { ... }, select('#', ...);
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42 return (format:gsub("%%(.)", function (c) if n <= maxn then n = n + 1; return tostring(arg[n]); end end));
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43 end
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44
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45 function verse.set_log_handler(log_handler, levels)
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46 levels = levels or { "debug", "info", "warn", "error" };
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47 logger.reset();
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48 local function _log_handler(name, level, message, ...)
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49 return log_handler(name, level, format(message, ...));
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50 end
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e27bf761bea6 verse: set_log_handler(): Allow nil to be passed for log_handler to disable logging (the default).
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51 if log_handler then
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52 for i, level in ipairs(levels) do
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53 logger.add_level_sink(level, _log_handler);
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54 end
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ea753bc81a33 verse: Add verse.filter_log(levels, logger) to filter a logger for certain levels
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55 end
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56 end
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57
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58 local function error_handler(err)
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59 verse.log("error", "Error: %s", err);
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60 verse.log("error", "Traceback: %s", debug.traceback());
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61 end
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63 function verse.set_error_handler(new_error_handler)
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64 error_handler = new_error_handler;
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65 end
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66
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67 function verse.loop()
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fa3ddadb8364 verse: verse.loop() and new verse.step() use the new error handler to, er, handle errors.
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68 return xpcall(server.loop, error_handler);
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69 end
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70
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71 function verse.step()
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72 return xpcall(server.step, error_handler);
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73 end
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75 function verse.quit()
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76 return server.setquitting(true);
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77 end
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78
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79 function stream:connect(connect_host, connect_port)
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80 connect_host = connect_host or "localhost";
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81 connect_port = tonumber(connect_port) or 5222;
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83 -- Create and initiate connection
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84 local conn = socket.tcp()
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85 conn:settimeout(0);
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86 local success, err = conn:connect(connect_host, connect_port);
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87
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88 if not success and err ~= "timeout" then
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89 self:warn("connect() to %s:%d failed: %s", connect_host, connect_port, err);
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90 return self:event("disconnected", { reason = err }) or false, err;
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91 end
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92
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93 local conn = server.wrapclient(conn, connect_host, connect_port, new_listener(self), "*a");
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94 if not conn then
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95 self:warn("connection initialisation failed: %s", err);
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96 return self:event("disconnected", { reason = err }) or false, err;
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97 end
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98
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99 self.conn = conn;
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100 self.send = function (stream, data)
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101 self:event("outgoing", data);
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102 data = tostring(data);
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103 self:event("outgoing-raw", data);
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104 return conn:write(data);
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105 end;
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106 return true;
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107 end
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108
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109 function stream:close()
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110 if not self.conn then
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111 verse.log("error", "Attempt to close disconnected connection - possibly a bug");
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112 return;
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113 end
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114 local on_disconnect = self.conn.disconnect();
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115 self.conn:close();
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116 on_disconnect(conn, reason);
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117 end
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118
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119 -- Logging functions
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120 function stream:debug(...)
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121 return self.logger("debug", ...);
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122 end
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123
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124 function stream:warn(...)
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125 return self.logger("warn", ...);
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126 end
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127
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128 function stream:error(...)
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129 return self.logger("error", ...);
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130 end
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131
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132 -- Event handling
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133 function stream:event(name, ...)
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134 self:debug("Firing event: "..tostring(name));
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135 return self.events.fire_event(name, ...);
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136 end
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137
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138 function stream:hook(name, ...)
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139 return self.events.add_handler(name, ...);
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140 end
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141
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091ff10eb51c verse: Add stream:unhook(event_name, handler)
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142 function stream:unhook(name, handler)
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143 return self.events.remove_handler(name, handler);
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144 end
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145
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146 function verse.eventable(object)
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147 object.events = events.new();
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148 object.hook, object.unhook = stream.hook, stream.unhook;
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149 local fire_event = object.events.fire_event;
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150 function object:event(name, ...)
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151 return fire_event(name, ...);
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152 end
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153 return object;
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154 end
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155
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156 function stream:add_plugin(name)
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157 if self.plugins[name] then return true; end
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158 if require("verse.plugins."..name) then
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159 local ok, err = verse.plugins[name](self);
162
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160 if ok ~= false then
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161 self:debug("Loaded %s plugin", name);
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162 self.plugins[name] = true;
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163 else
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164 self:warn("Failed to load %s plugin: %s", name, err);
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165 end
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166 end
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167 return self;
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168 end
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169
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170 -- Listener factory
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171 function new_listener(stream)
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172 local conn_listener = {};
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173
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174 function conn_listener.onconnect(conn)
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175 stream.connected = true;
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176 stream:event("connected");
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177 end
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178
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179 function conn_listener.onincoming(conn, data)
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180 stream:event("incoming-raw", data);
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181 end
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182
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183 function conn_listener.ondisconnect(conn, err)
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184 stream.connected = false;
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185 stream:event("disconnected", { reason = err });
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186 end
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163beb198646 verse: Add "drained" event to signal when send buffer is empty (new server.lua feature)
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187
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188 function conn_listener.ondrain(conn)
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189 stream:event("drained");
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190 end
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191
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1f47ddab3499 verse: Fire "status" event for connection status changes (notably SSL handshake complete)
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192 function conn_listener.onstatus(conn, new_status)
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193 stream:event("status", new_status);
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194 end
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195
0
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196 return conn_listener;
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197 end
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198
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199
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200 local log = require "util.logger".init("verse");
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201
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202 return verse;