root / HServer / 00.Server / 00.Program / node_modules / socket.io-adapter / index.js
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1 | 39 | HKM | |
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2 | /**
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3 | * Module dependencies.
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4 | */
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5 | |||
6 | var Emitter = require('events').EventEmitter; |
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7 | |||
8 | /**
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9 | * Module exports.
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10 | */
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11 | |||
12 | module.exports = Adapter; |
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13 | |||
14 | /**
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15 | * Memory adapter constructor.
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16 | *
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17 | * @param {Namespace} nsp
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18 | * @api public
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19 | */
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20 | |||
21 | function Adapter(nsp){ |
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22 | this.nsp = nsp;
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23 | this.rooms = {};
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24 | this.sids = {};
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25 | this.encoder = nsp.server.encoder;
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26 | } |
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27 | |||
28 | /**
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29 | * Inherits from `EventEmitter`.
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30 | */
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31 | |||
32 | Adapter.prototype.__proto__ = Emitter.prototype; |
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33 | |||
34 | /**
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35 | * Adds a socket to a room.
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36 | *
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37 | * @param {String} socket id
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38 | * @param {String} room name
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39 | * @param {Function} callback
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40 | * @api public
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41 | */
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42 | |||
43 | Adapter.prototype.add = function(id, room, fn){ |
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44 | return this.addAll(id, [ room ], fn); |
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45 | }; |
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46 | |||
47 | /**
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48 | * Adds a socket to a list of room.
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49 | *
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50 | * @param {String} socket id
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51 | * @param {String} rooms
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52 | * @param {Function} callback
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53 | * @api public
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54 | */
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55 | |||
56 | Adapter.prototype.addAll = function(id, rooms, fn){ |
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57 | for (var i = 0; i < rooms.length; i++) { |
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58 | var room = rooms[i];
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59 | this.sids[id] = this.sids[id] || {}; |
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60 | this.sids[id][room] = true; |
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61 | this.rooms[room] = this.rooms[room] || Room(); |
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62 | this.rooms[room].add(id);
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63 | } |
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64 | if (fn) process.nextTick(fn.bind(null, null)); |
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65 | }; |
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66 | |||
67 | /**
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68 | * Removes a socket from a room.
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69 | *
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70 | * @param {String} socket id
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71 | * @param {String} room name
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72 | * @param {Function} callback
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73 | * @api public
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74 | */
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75 | |||
76 | Adapter.prototype.del = function(id, room, fn){ |
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77 | this.sids[id] = this.sids[id] || {}; |
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78 | delete this.sids[id][room]; |
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79 | if (this.rooms.hasOwnProperty(room)) { |
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80 | this.rooms[room].del(id);
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81 | if (this.rooms[room].length === 0) delete this.rooms[room]; |
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82 | } |
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83 | |||
84 | if (fn) process.nextTick(fn.bind(null, null)); |
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85 | }; |
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86 | |||
87 | /**
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88 | * Removes a socket from all rooms it's joined.
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89 | *
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90 | * @param {String} socket id
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91 | * @param {Function} callback
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92 | * @api public
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93 | */
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94 | |||
95 | Adapter.prototype.delAll = function(id, fn){ |
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96 | var rooms = this.sids[id]; |
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97 | if (rooms) {
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98 | for (var room in rooms) { |
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99 | if (this.rooms.hasOwnProperty(room)) { |
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100 | this.rooms[room].del(id);
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101 | if (this.rooms[room].length === 0) delete this.rooms[room]; |
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102 | } |
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103 | } |
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104 | } |
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105 | delete this.sids[id]; |
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106 | |||
107 | if (fn) process.nextTick(fn.bind(null, null)); |
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108 | }; |
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109 | |||
110 | /**
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111 | * Broadcasts a packet.
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112 | *
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113 | * Options:
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114 | * - `flags` {Object} flags for this packet
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115 | * - `except` {Array} sids that should be excluded
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116 | * - `rooms` {Array} list of rooms to broadcast to
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117 | *
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118 | * @param {Object} packet object
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119 | * @api public
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120 | */
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121 | |||
122 | Adapter.prototype.broadcast = function(packet, opts){ |
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123 | var rooms = opts.rooms || [];
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124 | var except = opts.except || [];
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125 | var flags = opts.flags || {};
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126 | var packetOpts = {
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127 | preEncoded: true, |
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128 | volatile: flags.volatile, |
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129 | compress: flags.compress
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130 | }; |
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131 | var ids = {};
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132 | var self = this; |
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133 | var socket;
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134 | |||
135 | packet.nsp = this.nsp.name;
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136 | this.encoder.encode(packet, function(encodedPackets) { |
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137 | if (rooms.length) {
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138 | for (var i = 0; i < rooms.length; i++) { |
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139 | var room = self.rooms[rooms[i]];
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140 | if (!room) continue; |
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141 | var sockets = room.sockets;
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142 | for (var id in sockets) { |
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143 | if (sockets.hasOwnProperty(id)) {
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144 | if (ids[id] || ~except.indexOf(id)) continue; |
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145 | socket = self.nsp.connected[id]; |
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146 | if (socket) {
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147 | socket.packet(encodedPackets, packetOpts); |
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148 | ids[id] = true;
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149 | } |
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150 | } |
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151 | } |
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152 | } |
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153 | } else {
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154 | for (var id in self.sids) { |
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155 | if (self.sids.hasOwnProperty(id)) {
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156 | if (~except.indexOf(id)) continue; |
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157 | socket = self.nsp.connected[id]; |
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158 | if (socket) socket.packet(encodedPackets, packetOpts);
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159 | } |
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160 | } |
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161 | } |
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162 | }); |
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163 | }; |
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164 | |||
165 | /**
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166 | * Gets a list of clients by sid.
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167 | *
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168 | * @param {Array} explicit set of rooms to check.
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169 | * @param {Function} callback
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170 | * @api public
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171 | */
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172 | |||
173 | Adapter.prototype.clients = function(rooms, fn){ |
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174 | if ('function' == typeof rooms){ |
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175 | fn = rooms; |
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176 | rooms = null;
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177 | } |
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178 | |||
179 | rooms = rooms || []; |
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180 | |||
181 | var ids = {};
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182 | var sids = [];
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183 | var socket;
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184 | |||
185 | if (rooms.length) {
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186 | for (var i = 0; i < rooms.length; i++) { |
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187 | var room = this.rooms[rooms[i]]; |
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188 | if (!room) continue; |
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189 | var sockets = room.sockets;
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190 | for (var id in sockets) { |
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191 | if (sockets.hasOwnProperty(id)) {
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192 | if (ids[id]) continue; |
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193 | socket = this.nsp.connected[id];
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194 | if (socket) {
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195 | sids.push(id); |
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196 | ids[id] = true;
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197 | } |
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198 | } |
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199 | } |
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200 | } |
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201 | } else {
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202 | for (var id in this.sids) { |
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203 | if (this.sids.hasOwnProperty(id)) { |
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204 | socket = this.nsp.connected[id];
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205 | if (socket) sids.push(id);
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206 | } |
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207 | } |
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208 | } |
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209 | |||
210 | if (fn) process.nextTick(fn.bind(null, null, sids)); |
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211 | }; |
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212 | |||
213 | /**
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214 | * Gets the list of rooms a given client has joined.
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215 | *
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216 | * @param {String} socket id
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217 | * @param {Function} callback
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218 | * @api public
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219 | */
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220 | Adapter.prototype.clientRooms = function(id, fn){ |
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221 | var rooms = this.sids[id]; |
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222 | if (fn) process.nextTick(fn.bind(null, null, rooms ? Object.keys(rooms) : null)); |
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223 | }; |
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224 | |||
225 | /**
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226 | * Room constructor.
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227 | *
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228 | * @api private
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229 | */
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230 | |||
231 | function Room(){ |
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232 | if (!(this instanceof Room)) return new Room(); |
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233 | this.sockets = {};
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234 | this.length = 0; |
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235 | } |
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236 | |||
237 | /**
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238 | * Adds a socket to a room.
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239 | *
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240 | * @param {String} socket id
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241 | * @api private
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242 | */
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243 | |||
244 | Room.prototype.add = function(id){ |
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245 | if (!this.sockets.hasOwnProperty(id)) { |
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246 | this.sockets[id] = true; |
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247 | this.length++;
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248 | } |
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249 | }; |
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250 | |||
251 | /**
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252 | * Removes a socket from a room.
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253 | *
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254 | * @param {String} socket id
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255 | * @api private
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256 | */
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257 | |||
258 | Room.prototype.del = function(id){ |
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259 | if (this.sockets.hasOwnProperty(id)) { |
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260 | delete this.sockets[id]; |
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261 | this.length--;
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262 | } |
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263 | }; |