verse
816b8ccb3082
init.lua

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init.lua @ 257:816b8ccb3082

verse: Add init(...) method to load connection modules (client, component, bosh, etc.)
author Matthew Wild <mwild1@gmail.com>
date Mon, 05 Dec 2011 15:38:18 +0000
parent 247:7c58c16efa3e
child 259:05acf08d2e98
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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caf260adc453 Beginning of new verse
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1
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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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caf260adc453 Beginning of new verse
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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 function verse.init(...)
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23 for i=1,select("#", ...) do
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24 local ok = pcall(require, "verse."..select(i,...));
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25 if not ok then
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26 error("Verse connection module not found: verse."..select(i,...));
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27 end
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28 end
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29 return verse;
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30 end
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32
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65a0d3fcbbad verse: Switch connection ids to be a simple incrementing integer
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33 local max_id = 0;
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34
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37396504de5f verse: Multiple changes to allow controlling logging for both verse and streams
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35 function verse.new(logger, base)
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36 local t = setmetatable(base or {}, stream);
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37 max_id = max_id + 1;
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38 t.id = tostring(max_id);
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39 t.logger = logger or verse.new_logger("stream"..t.id);
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40 t.events = events.new();
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41 t.plugins = {};
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42 t.verse = verse;
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43 return t;
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caf260adc453 Beginning of new verse
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44 end
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6006e6bb1c28 verse: Add verse.add_task(delay, callback) to add timer functions using util.timer
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46 verse.add_task = require "util.timer".add_task;
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48 verse.logger = logger.init; -- COMPAT: Deprecated
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d75a209e57fc verse: verse.logger() -> verse.new_logger()
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49 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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50 verse.log = verse.logger("verse");
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51
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931bf313c691 verse: Format messages before passing them to custom log handler
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52 local function format(format, ...)
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53 local n, arg, maxn = 0, { ... }, select('#', ...);
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54 return (format:gsub("%%(.)", function (c) if n <= maxn then n = n + 1; return tostring(arg[n]); end end));
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55 end
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56
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57 function verse.set_log_handler(log_handler, levels)
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58 levels = levels or { "debug", "info", "warn", "error" };
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59 logger.reset();
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60 local function _log_handler(name, level, message, ...)
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61 return log_handler(name, level, format(message, ...));
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62 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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63 if log_handler then
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64 for i, level in ipairs(levels) do
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65 logger.add_level_sink(level, _log_handler);
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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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66 end
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ea753bc81a33 verse: Add verse.filter_log(levels, logger) to filter a logger for certain levels
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67 end
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68 end
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69
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ab4773b0ef5e verse: Add default log handler for errors
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70 function _default_log_handler(name, level, message)
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71 return io.stderr:write(name, "\t", level, "\t", message, "\n");
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72 end
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73 verse.set_log_handler(_default_log_handler, { "error" });
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74
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75 local function error_handler(err)
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76 verse.log("error", "Error: %s", err);
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77 verse.log("error", "Traceback: %s", debug.traceback());
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78 end
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80 function verse.set_error_handler(new_error_handler)
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81 error_handler = new_error_handler;
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82 end
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83
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84 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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85 return xpcall(server.loop, error_handler);
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86 end
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87
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88 function verse.step()
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89 return xpcall(server.step, error_handler);
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caf260adc453 Beginning of new verse
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90 end
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91
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50a2e4fb0a16 verse: Add verse.quit() to exit the event loop
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92 function verse.quit()
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93 return server.setquitting(true);
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94 end
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95
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96 function stream:connect(connect_host, connect_port)
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97 connect_host = connect_host or "localhost";
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98 connect_port = tonumber(connect_port) or 5222;
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99
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100 -- Create and initiate connection
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101 local conn = socket.tcp()
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102 conn:settimeout(0);
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103 local success, err = conn:connect(connect_host, connect_port);
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104
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105 if not success and err ~= "timeout" then
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106 self:warn("connect() to %s:%d failed: %s", connect_host, connect_port, err);
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107 return self:event("disconnected", { reason = err }) or false, err;
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108 end
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109
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829a0a495dd1 verse: Remove some useless comments
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110 local conn = server.wrapclient(conn, connect_host, connect_port, new_listener(self), "*a");
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111 if not conn then
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3659ba3b8dfa verse: Log error when connection fails instantly
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112 self:warn("connection initialisation failed: %s", err);
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113 return self:event("disconnected", { reason = err }) or false, err;
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114 end
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115
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116 self.conn = conn;
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117 self.send = function (stream, data)
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118 self:event("outgoing", data);
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119 data = tostring(data);
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120 self:event("outgoing-raw", data);
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121 return conn:write(data);
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122 end;
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f0aec10023aa verse: Return true from connect() on success, add stream:close()
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123 return true;
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124 end
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125
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126 function stream:close()
132
b38397163737 verse: Log error and return when trying to close a closed connection
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127 if not self.conn then
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128 verse.log("error", "Attempt to close disconnected connection - possibly a bug");
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129 return;
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130 end
96
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131 local on_disconnect = self.conn.disconnect();
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132 self.conn:close();
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133 on_disconnect(conn, reason);
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134 end
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135
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136 -- Logging functions
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137 function stream:debug(...)
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138 return self.logger("debug", ...);
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139 end
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140
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141 function stream:warn(...)
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142 return self.logger("warn", ...);
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143 end
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144
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145 function stream:error(...)
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146 return self.logger("error", ...);
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147 end
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148
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149 -- Event handling
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150 function stream:event(name, ...)
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151 self:debug("Firing event: "..tostring(name));
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152 return self.events.fire_event(name, ...);
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153 end
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154
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155 function stream:hook(name, ...)
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156 return self.events.add_handler(name, ...);
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157 end
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158
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159 function stream:unhook(name, handler)
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160 return self.events.remove_handler(name, handler);
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161 end
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162
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163 function verse.eventable(object)
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164 object.events = events.new();
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165 object.hook, object.unhook = stream.hook, stream.unhook;
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166 local fire_event = object.events.fire_event;
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167 function object:event(name, ...)
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168 return fire_event(name, ...);
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169 end
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170 return object;
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171 end
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172
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173 function stream:add_plugin(name)
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174 if self.plugins[name] then return true; end
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175 if require("verse.plugins."..name) then
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176 local ok, err = verse.plugins[name](self);
162
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177 if ok ~= false then
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178 self:debug("Loaded %s plugin", name);
173
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179 self.plugins[name] = true;
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180 else
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181 self:warn("Failed to load %s plugin: %s", name, err);
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182 end
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183 end
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184 return self;
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185 end
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186
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187 -- Listener factory
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188 function new_listener(stream)
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189 local conn_listener = {};
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190
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191 function conn_listener.onconnect(conn)
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192 stream.connected = true;
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193 stream:event("connected");
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194 end
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195
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196 function conn_listener.onincoming(conn, data)
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197 stream:event("incoming-raw", data);
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198 end
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199
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200 function conn_listener.ondisconnect(conn, err)
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201 stream.connected = false;
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202 stream:event("disconnected", { reason = err });
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203 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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204
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205 function conn_listener.ondrain(conn)
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206 stream:event("drained");
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207 end
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208
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1f47ddab3499 verse: Fire "status" event for connection status changes (notably SSL handshake complete)
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209 function conn_listener.onstatus(conn, new_status)
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210 stream:event("status", new_status);
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211 end
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212
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213 return conn_listener;
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214 end
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215
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216 return verse;