scalra/lib/socket.io-1.0.6/socket.io.js

node.js framework to prototype and scale rapidly

!function(e){"object"==typeof exports?module.exports=e():"function"==typeof define&&define.amd?define(e):"undefined"!=typeof window?window.io=e():"undefined"!=typeof global?global.io=e():"undefined"!=typeof self&&(self.io=e())}(function(){var define,module,exports;return function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s}({1:[function(require,module,exports){module.exports=require("./lib/")},{"./lib/":2}],2:[function(require,module,exports){var url=require("./url");var parser=require("socket.io-parser");var Manager=require("./manager");var debug=require("debug")("socket.io-client");module.exports=exports=lookup;var cache=exports.managers={};function lookup(uri,opts){if(typeof uri=="object"){opts=uri;uri=undefined}opts=opts||{};var parsed=url(uri);var source=parsed.source;var id=parsed.id;var io;if(opts.forceNew||opts["force new connection"]||false===opts.multiplex){debug("ignoring socket cache for %s",source);io=Manager(source,opts)}else{if(!cache[id]){debug("new io instance for %s",source);cache[id]=Manager(source,opts)}io=cache[id]}return io.socket(parsed.path)}exports.protocol=parser.protocol;exports.connect=lookup;exports.Manager=require("./manager");exports.Socket=require("./socket")},{"./manager":3,"./socket":5,"./url":6,debug:9,"socket.io-parser":40}],3:[function(require,module,exports){var url=require("./url");var eio=require("engine.io-client");var Socket=require("./socket");var Emitter=require("component-emitter");var parser=require("socket.io-parser");var on=require("./on");var bind=require("component-bind");var object=require("object-component");var debug=require("debug")("socket.io-client:manager");module.exports=Manager;function Manager(uri,opts){if(!(this instanceof Manager))return new Manager(uri,opts);if(uri&&"object"==typeof uri){opts=uri;uri=undefined}opts=opts||{};opts.path=opts.path||"/socket.io";this.nsps={};this.subs=[];this.opts=opts;this.reconnection(opts.reconnection!==false);this.reconnectionAttempts(opts.reconnectionAttempts||Infinity);this.reconnectionDelay(opts.reconnectionDelay||1e3);this.reconnectionDelayMax(opts.reconnectionDelayMax||5e3);this.timeout(null==opts.timeout?2e4:opts.timeout);this.readyState="closed";this.uri=uri;this.connected=0;this.attempts=0;this.encoding=false;this.packetBuffer=[];this.encoder=new parser.Encoder;this.decoder=new parser.Decoder;this.open()}Manager.prototype.emitAll=function(){this.emit.apply(this,arguments);for(var nsp in this.nsps){this.nsps[nsp].emit.apply(this.nsps[nsp],arguments)}};Emitter(Manager.prototype);Manager.prototype.reconnection=function(v){if(!arguments.length)return this._reconnection;this._reconnection=!!v;return this};Manager.prototype.reconnectionAttempts=function(v){if(!arguments.length)return this._reconnectionAttempts;this._reconnectionAttempts=v;return this};Manager.prototype.reconnectionDelay=function(v){if(!arguments.length)return this._reconnectionDelay;this._reconnectionDelay=v;return this};Manager.prototype.reconnectionDelayMax=function(v){if(!arguments.length)return this._reconnectionDelayMax;this._reconnectionDelayMax=v;return this};Manager.prototype.timeout=function(v){if(!arguments.length)return this._timeout;this._timeout=v;return this};Manager.prototype.maybeReconnectOnOpen=function(){if(!this.openReconnect&&!this.reconnecting&&this._reconnection){this.openReconnect=true;this.reconnect()}};Manager.prototype.open=Manager.prototype.connect=function(fn){debug("readyState %s",this.readyState);if(~this.readyState.indexOf("open"))return this;debug("opening %s",this.uri);this.engine=eio(this.uri,this.opts);var socket=this.engine;var self=this;this.readyState="opening";var openSub=on(socket,"open",function(){self.onopen();fn&&fn()});var errorSub=on(socket,"error",function(data){debug("connect_error");self.cleanup();self.readyState="closed";self.emitAll("connect_error",data);if(fn){var err=new Error("Connection error");err.data=data;fn(err)}self.maybeReconnectOnOpen()});if(false!==this._timeout){var timeout=this._timeout;debug("connect attempt will timeout after %d",timeout);var timer=setTimeout(function(){debug("connect attempt timed out after %d",timeout);openSub.destroy();socket.close();socket.emit("error","timeout");self.emitAll("connect_timeout",timeout)},timeout);this.subs.push({destroy:function(){clearTimeout(timer)}})}this.subs.push(openSub);this.subs.push(errorSub);return this};Manager.prototype.onopen=function(){debug("open");this.cleanup();this.readyState="open";this.emit("open");var socket=this.engine;this.subs.push(on(socket,"data",bind(this,"ondata")));this.subs.push(on(this.decoder,"decoded",bind(this,"ondecoded")));this.subs.push(on(socket,"error",bind(this,"onerror")));this.subs.push(on(socket,"close",bind(this,"onclose")))};Manager.prototype.ondata=function(data){this.decoder.add(data)};Manager.prototype.ondecoded=function(packet){this.emit("packet",packet)};Manager.prototype.onerror=function(err){debug("error",err);this.emitAll("error",err)};Manager.prototype.socket=function(nsp){var socket=this.nsps[nsp];if(!socket){socket=new Socket(this,nsp);this.nsps[nsp]=socket;var self=this;socket.on("connect",function(){self.connected++})}return socket};Manager.prototype.destroy=function(socket){--this.connected||this.close()};Manager.prototype.packet=function(packet){debug("writing packet %j",packet);var self=this;if(!self.encoding){self.encoding=true;this.encoder.encode(packet,function(encodedPackets){for(var i=0;i<encodedPackets.length;i++){self.engine.write(encodedPackets[i])}self.encoding=false;self.processPacketQueue()})}else{self.packetBuffer.push(packet)}};Manager.prototype.processPacketQueue=function(){if(this.packetBuffer.length>0&&!this.encoding){var pack=this.packetBuffer.shift();this.packet(pack)}};Manager.prototype.cleanup=function(){var sub;while(sub=this.subs.shift())sub.destroy();this.packetBuffer=[];this.encoding=false;this.decoder.destroy()};Manager.prototype.close=Manager.prototype.disconnect=function(){this.skipReconnect=true;this.engine.close()};Manager.prototype.onclose=function(reason){debug("close");this.cleanup();this.readyState="closed";this.emit("close",reason);if(this._reconnection&&!this.skipReconnect){this.reconnect()}};Manager.prototype.reconnect=function(){if(this.reconnecting)return this;var self=this;this.attempts++;if(this.attempts>this._reconnectionAttempts){debug("reconnect failed");this.emitAll("reconnect_failed");this.reconnecting=false}else{var delay=this.attempts*this.reconnectionDelay();delay=Math.min(delay,this.reconnectionDelayMax());debug("will wait %dms before reconnect attempt",delay);this.reconnecting=true;var timer=setTimeout(function(){debug("attempting reconnect");self.emitAll("reconnect_attempt",self.attempts);self.emitAll("reconnecting",self.attempts);self.open(function(err){if(err){debug("reconnect attempt error");self.reconnecting=false;self.reconnect();self.emitAll("reconnect_error",err.data)}else{debug("reconnect success");self.onreconnect()}})},delay);this.subs.push({destroy:function(){clearTimeout(timer)}})}};Manager.prototype.onreconnect=function(){var attempt=this.attempts;this.attempts=0;this.reconnecting=false;this.emitAll("reconnect",attempt)}},{"./on":4,"./socket":5,"./url":6,"component-bind":7,"component-emitter":8,debug:9,"engine.io-client":11,"object-component":37,"socket.io-parser":40}],4:[function(require,module,exports){module.exports=on;function on(obj,ev,fn){obj.on(ev,fn);return{destroy:function(){obj.removeListener(ev,fn)}}}},{}],5:[function(require,module,exports){var parser=require("socket.io-parser");var Emitter=require("component-emitter");var toArray=require("to-array");var on=require("./on");var bind=require("component-bind");var debug=require("debug")("socket.io-client:socket");var hasBin=require("has-binary-data");var indexOf=require("indexof");module.exports=exports=Socket;var events={connect:1,connect_error:1,connect_timeout:1,disconnect:1,error:1,reconnect:1,reconnect_attempt:1,reconnect_failed:1,reconnect_error:1,reconnecting:1};var emit=Emitter.prototype.emit;function Socket(io,nsp){this.io=io;this.nsp=nsp;this.json=this;this.ids=0;this.acks={};this.open();this.receiveBuffer=[];this.sendBuffer=[];this.connected=false;this.disconnected=true;this.subEvents()}Emitter(Socket.prototype);Socket.prototype.subEvents=function(){var io=this.io;this.subs=[on(io,"open",bind(this,"onopen")),on(io,"packet",bind(this,"onpacket")),on(io,"close",bind(this,"onclose"))]};Socket.prototype.open=Socket.prototype.connect=function(){if(this.connected)return this;this.io.open();if("open"==this.io.readyState)this.onopen();return this};Socket.prototype.send=function(){var args=toArray(arguments);args.unshift("message");this.emit.apply(this,args);return this};Socket.prototype.emit=function(ev){if(events.hasOwnProperty(ev)){emit.apply(this,arguments);return this}var args=toArray(arguments);var parserType=parser.EVENT;if(hasBin(args)){parserType=parser.BINARY_EVENT}var packet={type:parserType,data:args};if("function"==typeof args[args.length-1]){debug("emitting packet with ack id %d",this.ids);this.acks[this.ids]=args.pop();packet.id=this.ids++}if(this.connected){this.packet(packet)}else{this.sendBuffer.push(packet)}return this};Socket.prototype.packet=function(packet){packet.nsp=this.nsp;this.io.packet(packet)};Socket.prototype.onopen=function(){debug("transport is open - connecting");if("/"!=this.nsp){this.packet({type:parser.CONNECT})}};Socket.prototype.onclose=function(reason){debug("close (%s)",reason);this.connected=false;this.disconnected=true;this.emit("disconnect",reason)};Socket.prototype.onpacket=function(packet){if(packet.nsp!=this.nsp)return;switch(packet.type){case parser.CONNECT:this.onconnect();break;case parser.EVENT:this.onevent(packet);break;case parser.BINARY_EVENT:this.onevent(packet);break;case parser.ACK:this.onack(packet);break;case parser.BINARY_ACK:this.onack(packet);break;case parser.DISCONNECT:this.ondisconnect();break;case parser.ERROR:this.emit("error",packet.data);break}};Socket.prototype.onevent=function(packet){var args=packet.data||[];debug("emitting event %j",args);if(null!=packet.id){debug("attaching ack callback to event");args.push(this.ack(packet.id))}if(this.connected){emit.apply(this,args)}else{this.receiveBuffer.push(args)}};Socket.prototype.ack=function(id){var self=this;var sent=false;return function(){if(sent)return;sent=true;var args=toArray(arguments);debug("sending ack %j",args);var type=hasBin(args)?parser.BINARY_ACK:parser.ACK;self.packet({type:type,id:id,data:args})}};Socket.prototype.onack=function(packet){debug("calling ack %s with %j",packet.id,packet.data);var fn=this.acks[packet.id];fn.apply(this,packet.data);delete this.acks[packet.id]};Socket.prototype.onconnect=function(){this.connected=true;this.disconnected=false;this.emit("connect");this.emitBuffered()};Socket.prototype.emitBuffered=function(){var i;for(i=0;i<this.receiveBuffer.length;i++){emit.apply(this,this.receiveBuffer[i])}this.receiveBuffer=[];for(i=0;i<this.sendBuffer.length;i++){this.packet(this.sendBuffer[i])}this.sendBuffer=[]};Socket.prototype.ondisconnect=function(){debug("server disconnect (%s)",this.nsp);this.destroy();this.onclose("io server disconnect")};Socket.prototype.destroy=function(){for(var i=0;i<this.subs.length;i++){this.subs[i].destroy()}this.io.destroy(this)};Socket.prototype.close=Socket.prototype.disconnect=function(){if(!this.connected)return this;debug("performing disconnect (%s)",this.nsp);this.packet({type:parser.DISCONNECT});this.destroy();this.onclose("io client disconnect");return this}},{"./on":4,"component-bind":7,"component-emitter":8,debug:9,"has-binary-data":32,indexof:36,"socket.io-parser":40,"to-array":43}],6:[function(require,module,exports){var global=typeof self!=="undefined"?self:typeof window!=="undefined"?window:{};var parseuri=require("parseuri");var debug=require("debug")("socket.io-client:url");module.exports=url;function url(uri,loc){var obj=uri;var loc=loc||global.location;if(null==uri)uri=loc.protocol+"//"+loc.hostname;if("string"==typeof uri){if("/"==uri.charAt(0)){if("undefined"!=typeof loc){uri=loc.hostname+uri}}if(!/^(https?|wss?):\/\//.test(uri)){debug("protocol-less url %s",uri);if("undefined"!=typeof loc){uri=loc.protocol+"//"+uri}else{uri="https://"+uri}}debug("parse %s",uri);obj=parseuri(uri)}if(!obj.port){if(/^(http|ws)$/.test(obj.protocol)){obj.port="80"}else if(/^(http|ws)s$/.test(obj.protocol)){obj.port="443"}}obj.path=obj.path||"/";obj.id=obj.protocol+"://"+obj.host+":"+obj.port;obj.href=obj.protocol+"://"+obj.host+(loc&&loc.port==obj.port?"":":"+obj.port);return obj}},{debug:9,parseuri:38}],7:[function(require,module,exports){var slice=[].slice;module.exports=function(obj,fn){if("string"==typeof fn)fn=obj[fn];if("function"!=typeof fn)throw new Error("bind() requires a function");var args=slice.call(arguments,2);return function(){return fn.apply(obj,args.concat(slice.call(arguments)))}}},{}],8:[function(require,module,exports){module.exports=Emitter;function Emitter(obj){if(obj)return mixin(obj)}function mixin(obj){for(var key in Emitter.prototype){obj[key]=Emitter.prototype[key]}return obj}Emitter.prototype.on=Emitter.prototype.addEventListener=function(event,fn){this._callbacks=this._callbacks||{};(this._callbacks[event]=this._callbacks[event]||[]).push(fn);return this};Emitter.prototype.once=function(event,fn){var self=this;this._callbacks=this._callbacks||{};function on(){self.off(event,on);fn.apply(this,arguments)}on.fn=fn;this.on(event,on);return this};Emitter.prototype.off=Emitter.prototype.removeListener=Emitter.prototype.removeAllListeners=Emitter.prototype.removeEventListener=function(event,fn){this._callbacks=this._callbacks||{};if(0==arguments.length){this._callbacks={};return this}var callbacks=this._callbacks[event];if(!callbacks)return this;if(1==arguments.length){delete this._callbacks[event];return this}var cb;for(var i=0;i<callbacks.length;i++){cb=callbacks[i];if(cb===fn||cb.fn===fn){callbacks.splice(i,1);break}}return this};Emitter.prototype.emit=function(event){this._callbacks=this._callbacks||{};var args=[].slice.call(arguments,1),callbacks=this._callbacks[event];if(callbacks){callbacks=callbacks.slice(0);for(var i=0,len=callbacks.length;i<len;++i){callbacks[i].apply(this,args)}}return this};Emitter.prototype.listeners=function(event){this._callbacks=this._callbacks||{};return this._callbacks[event]||[]};Emitter.prototype.hasListeners=function(event){return!!this.listeners(event).length}},{}],9:[function(require,module,exports){module.exports=debug;function debug(name){if(!debug.enabled(name))return function(){};return function(fmt){fmt=coerce(fmt);var curr=new Date;var ms=curr-(debug[name]||curr);debug[name]=curr;fmt=name+" "+fmt+" +"+debug.humanize(ms);window.console&&console.log&&Function.prototype.apply.call(console.log,console,arguments)}}debug.names=[];debug.skips=[];debug.enable=function(name){try{localStorage.debug=name}catch(e){}var split=(name||"").split(/[\s,]+/),len=split.length;for(var i=0;i<len;i++){name=split[i].replace("*",".*?");if(name[0]==="-"){debug.skips.push(new RegExp("^"+name.substr(1)+"$"))}else{debug.names.push(new RegExp("^"+name+"$"))}}};debug.disable=function(){debug.enable("")};debug.humanize=function(ms){var sec=1e3,min=60*1e3,hour=60*min;if(ms>=hour)return(ms/hour).toFixed(1)+"h";if(ms>=min)return(ms/min).toFixed(1)+"m";if(ms>=sec)return(ms/sec|0)+"s";return ms+"ms"};debug.enabled=function(name){for(var i=0,len=debug.skips.length;i<len;i++){if(debug.skips[i].test(name)){return false}}for(var i=0,len=debug.names.length;i<len;i++){if(debug.names[i].test(name)){return true}}return false};function coerce(val){if(val instanceof Error)return val.stack||val.message;return val}try{if(window.localStorage)debug.enable(localStorage.debug)}catch(e){}},{}],10:[function(require,module,exports){var index=require("indexof");module.exports=Emitter;function Emitter(obj){if(obj)return mixin(obj)}function mixin(obj){for(var key in Emitter.prototype){obj[key]=Emitter.prototype[key]}return obj}Emitter.prototype.on=function(event,fn){this._callbacks=this._callbacks||{};(this._callbacks[event]=this._callbacks[event]||[]).push(fn);return this};Emitter.prototype.once=function(event,fn){var self=this;this._callbacks=this._callbacks||{};function on(){self.off(event,on);fn.apply(this,arguments)}fn._off=on;this.on(event,on);return this};Emitter.prototype.off=Emitter.prototype.removeListener=Emitter.prototype.removeAllListeners=function(event,fn){this._callbacks=this._callbacks||{};if(0==arguments.length){this._callbacks={};return this}var callbacks=this._callbacks[event];if(!callbacks)return this;if(1==arguments.length){delete this._callbacks[event];return this}var i=index(callbacks,fn._off||fn);if(~i)callbacks.splice(i,1);return this};Emitter.prototype.emit=function(event){this._callbacks=this._callbacks||{};var args=[].slice.call(arguments,1),callbacks=this._callbacks[event];if(callbacks){callbacks=callbacks.slice(0);for(var i=0,len=callbacks.length;i<len;++i){callbacks[i].apply(this,args)}}return this};Emitter.prototype.listeners=function(event){this._callbacks=this._callbacks||{};return this._callbacks[event]||[]};Emitter.prototype.hasListeners=function(event){return!!this.listeners(event).length}},{indexof:36}],11:[function(require,module,exports){module.exports=require("./lib/")},{"./lib/":12}],12:[function(require,module,exports){module.exports=require("./socket");module.exports.parser=require("engine.io-parser")},{"./socket":13,"engine.io-parser":22}],13:[function(require,module,exports){var global=typeof self!=="undefined"?self:typeof window!=="undefined"?window:{};var transports=require("./transports");var Emitter=require("component-emitter");var debug=require("debug")("engine.io-client:socket");var index=require("indexof");var parser=require("engine.io-parser");var parseuri=require("parseuri");var parsejson=require("parsejson");var parseqs=require("parseqs");module.exports=Socket;function noop(){}function Socket(uri,opts){if(!(this instanceof Socket))return new Socket(uri,opts);opts=opts||{};if(uri&&"object"==typeof uri){opts=uri;uri=null}if(uri){uri=parseuri(uri);opts.host=uri.host;opts.secure=uri.protocol=="https"||uri.protocol=="wss";opts.port=uri.port;if(uri.query)opts.query=uri.query}this.secure=null!=opts.secure?opts.secure:global.location&&"https:"==location.protocol;if(opts.host){var pieces=opts.host.split(":");opts.hostname=pieces.shift();if(pieces.length)opts.port=pieces.pop()}this.agent=opts.agent||false;this.hostname=opts.hostname||(global.location?location.hostname:"localhost");this.port=opts.port||(global.location&&location.port?location.port:this.secure?443:80);this.query=opts.query||{};if("string"==typeof this.query)this.query=parseqs.decode(this.query);this.upgrade=false!==opts.upgrade;this.path=(opts.path||"/engine.io").replace(/\/$/,"")+"/";this.forceJSONP=!!opts.forceJSONP;this.forceBase64=!!opts.forceBase64;this.timestampParam=opts.timestampParam||"t";this.timestampRequests=opts.timestampRequests;this.transports=opts.transports||["polling","websocket"];this.readyState="";this.writeBuffer=[];this.callbackBuffer=[];this.policyPort=opts.policyPort||843;this.rememberUpgrade=opts.rememberUpgrade||false;this.open();this.binaryType=null;this.onlyBinaryUpgrades=opts.onlyBinaryUpgrades}Socket.priorWebsocketSuccess=false;Emitter(Socket.prototype);Socket.protocol=parser.protocol;Socket.Socket=Socket;Socket.Transport=require("./transport");Socket.transports=require("./transports");Socket.parser=require("engine.io-parser");Socket.prototype.createTransport=function(name){debug('creating transport "%s"',name);var query=clone(this.query);query.EIO=parser.protocol;query.transport=name;if(this.id)query.sid=this.id;var transport=new transports[name]({agent:this.agent,hostname:this.hostname,port:this.port,secure:this.secure,path:this.path,query:query,forceJSONP:this.forceJSONP,forceBase64:this.forceBase64,timestampRequests:this.timestampRequests,timestampParam:this.timestampParam,policyPort:this.policyPort,socket:this});return transport};function clone(obj){var o={};for(var i in obj){if(obj.hasOwnProperty(i)){o[i]=obj[i]}}return o}Socket.prototype.open=function(){var transport;if(this.rememberUpgrade&&Socket.priorWebsocketSuccess&&this.transports.indexOf("websocket")!=-1){transport="websocket"}else{transport=this.transports[0]}this.readyState="opening";var transport=this.createTransport(transport);transport.open();this.setTransport(transport)};Socket.prototype.setTransport=function(transport){debug("setting transport %s",transport.name);var self=this;if(this.transport){debug("clearing existing transport %s",this.transport.name);this.transport.removeAllListeners()}this.transport=transport;transport.on("drain",function(){self.onDrain()}).on("packet",function(packet){self.onPacket(packet)}).on("error",function(e){self.onError(e)}).on("close",function(){self.onClose("transport close")})};Socket.prototype.probe=function(name){debug('probing transport "%s"',name);var transport=this.createTransport(name,{probe:1}),failed=false,self=this;Socket.priorWebsocketSuccess=false;function onTransportOpen(){if(self.onlyBinaryUpgrades){var upgradeLosesBinary=!this.supportsBinary&&self.transport.supportsBinary;failed=failed||upgradeLosesBinary}if(failed)return;debug('probe transport "%s" opened',name);transport.send([{type:"ping",data:"probe"}]);transport.once("packet",function(msg){if(failed)return;if("pong"==msg.type&&"probe"==msg.data){debug('probe transport "%s" pong',name);self.upgrading=true;self.emit("upgrading",transport);Socket.priorWebsocketSuccess="websocket"==transport.name;debug('pausing current transport "%s"',self.transport.name);self.transport.pause(function(){if(failed)return;if("closed"==self.readyState||"closing"==self.readyState){return}debug("changing transport and sending upgrade packet");cleanup();self.setTransport(transport);transport.send([{type:"upgrade"}]);self.emit("upgrade",transport);transport=null;self.upgrading=false;self.flush()})}else{debug('probe transport "%s" failed',name);var err=new Error("probe error");err.transport=transport.name;self.emit("upgradeError",err)}})}function freezeTransport(){if(failed)return;failed=true;cleanup();transport.close();transport=null}function onerror(err){var error=new Error("probe error: "+err);error.transport=transport.name;freezeTransport();debug('probe transport "%s" failed because of error: %s',name,err);self.emit("upgradeError",error)}function onTransportClose(){onerror("transport closed")}function onclose(){onerror("socket closed")}function onupgrade(to){if(transport&&to.name!=transport.name){debug('"%s" works - aborting "%s"',to.name,transport.name);freezeTransport()}}function cleanup(){transport.removeListener("open",onTransportOpen);transport.removeListener("error",onerror);transport.removeListener("close",onTransportClose);self.removeListener("close",onclose);self.removeListener("upgrading",onupgrade)}transport.once("open",onTransportOpen);transport.once("error",onerror);transport.once("close",onTransportClose);this.once("close",onclose);this.once("upgrading",onupgrade);transport.open()};Socket.prototype.onOpen=function(){debug("socket open");this.readyState="open";Socket.priorWebsocketSuccess="websocket"==this.transport.name;this.emit("open");this.flush();if("open"==this.readyState&&this.upgrade&&this.transport.pause){debug("starting upgrade probes");for(var i=0,l=this.upgrades.length;i<l;i++){this.probe(this.upgrades[i])}}};Socket.prototype.onPacket=function(packet){if("opening"==this.readyState||"open"==this.readyState){debug('socket receive: type "%s", data "%s"',packet.type,packet.data);this.emit("packet",packet);this.emit("heartbeat");switch(packet.type){case"open":this.onHandshake(parsejson(packet.data));break;case"pong":this.setPing();break;case"error":var err=new Error("server error");err.code=packet.data;this.emit("error",err);break;case"message":this.emit("data",packet.data);this.emit("message",packet.data);break}}else{debug('packet received with socket readyState "%s"',this.readyState)}};Socket.prototype.onHandshake=function(data){this.emit("handshake",data);this.id=data.sid;this.transport.query.sid=data.sid;this.upgrades=this.filterUpgrades(data.upgrades);this.pingInterval=data.pingInterval;this.pingTimeout=data.pingTimeout;this.onOpen();if("closed"==this.readyState)return;this.setPing();this.removeListener("heartbeat",this.onHeartbeat);this.on("heartbeat",this.onHeartbeat)};Socket.prototype.onHeartbeat=function(timeout){clearTimeout(this.pingTimeoutTimer);var self=this;self.pingTimeoutTimer=setTimeout(function(){if("closed"==self.readyState)return;self.onClose("ping timeout")},timeout||self.pingInterval+self.pingTimeout)};Socket.prototype.setPing=function(){var self=this;clearTimeout(self.pingIntervalTimer);self.pingIntervalTimer=setTimeout(function(){debug("writing ping packet - expecting pong within %sms",self.pingTimeout);self.ping();self.onHeartbeat(self.pingTimeout)},self.pingInterval)};Socket.prototype.ping=function(){this.sendPacket("ping")};Socket.prototype.onDrain=function(){for(var i=0;i<this.prevBufferLen;i++){if(this.callbackBuffer[i]){this.callbackBuffer[i]()}}this.writeBuffer.splice(0,this.prevBufferLen);this.callbackBuffer.splice(0,this.prevBufferLen);this.prevBufferLen=0;if(this.writeBuffer.length==0){this.emit("drain")}else{this.flush()}};Socket.prototype.flush=function(){if("closed"!=this.readyState&&this.transport.writable&&!this.upgrading&&this.writeBuffer.length){debug("flushing %d packets in socket",this.writeBuffer.length);this.transport.send(this.writeBuffer);this.prevBufferLen=this.writeBuffer.length;this.emit("flush")}};Socket.prototype.write=Socket.prototype.send=function(msg,fn){this.sendPacket("message",msg,fn);return this};Socket.prototype.sendPacket=function(type,data,fn){var packet={type:type,data:data};this.emit("packetCreate",packet);this.writeBuffer.push(packet);this.callbackBuffer.push(fn);this.flush()};Socket.prototype.close=function(){if("opening"==this.readyState||"open"==this.readyState){this.onClose("forced close");debug("socket closing - telling transport to close");this.transport.close()}return this};Socket.prototype.onError=function(err){debug("socket error %j",err);Socket.priorWebsocketSuccess=false;this.emit("error",err);this.onClose("transport error",err)};Socket.prototype.onClose=function(reason,desc){if("opening"==this.readyState||"open"==this.readyState){debug('socket close with reason: "%s"',reason);var self=this;clearTimeout(this.pingIntervalTimer);clearTimeout(this.pingTimeoutTimer);setTimeout(function(){self.writeBuffer=[];self.callbackBuffer=[];self.prevBufferLen=0},0);this.transport.removeAllListeners("close");this.transport.close();this.transport.removeAllListeners();this.readyState="closed";this.id=null;this.emit("close",reason,desc)}};Socket.prototype.filterUpgrades=function(upgrades){var filteredUpgrades=[];for(var i=0,j=upgrades.length;i<j;i++){if(~index(this.transports,upgrades[i]))filteredUpgrades.push(upgrades[i])}return filteredUpgrades}},{"./transport":14,"./transports":15,"component-emitter":8,debug:9,"engine.io-parser":22,indexof:36,parsejson:29,parseqs:30,parseuri:38}],14:[function(require,module,exports){var parser=require("engine.io-parser");var Emitter=require("component-emitter");module.exports=Transport;function Transport(opts){this.path=opts.path;this.hostname=opts.hostname;this.port=opts.port;this.secure=opts.secure;this.query=opts.query;this.timestampParam=opts.timestampParam;this.timestampRequests=opts.timestampRequests;this.readyState="";this.agent=opts.agent||false;this.socket=opts.socket}Emitter(Transport.prototype);Transport.timestamps=0;Transport.prototype.onError=function(msg,desc){var err=new Error(msg);err.type="TransportError";err.description=desc;this.emit("error",err);return this};Transport.prototype.open=function(){if("closed"==this.readyState||""==this.readyState){this.readyState="opening";this.doOpen()}return this};Transport.prototype.close=function(){if("opening"==this.readyState||"open"==this.readyState){this.doClose();this.onClose()}return this};Transport.prototype.send=function(packets){if("open"==this.readyState){this.write(packets)}else{throw new Error("Transport not open")}};Transport.prototype.onOpen=function(){this.readyState="open";this.writable=true;this.emit("open")};Transport.prototype.onData=function(data){try{var packet=parser.decodePacket(data,this.socket.binaryType);this.onPacket(packet)}catch(e){e.data=data;this.onError("parser decode error",e)}};Transport.prototype.onPacket=function(packet){this.emit("packet",packet)};Transport.prototype.onClose=function(){this.readyState="closed";this.emit("close")}},{"component-emitter":8,"engine.io-parser":22}],15:[function(require,module,exports){var global=typeof self!=="undefined"?self:typeof window!=="undefined"?window:{};var XMLHttpRequest=require("xmlhttprequest");var XHR=require("./polling-xhr");var JSONP=require("./polling-jsonp");var websocket=require("./websocket");exports.polling=polling;exports.websocket=websocket;function polling(opts){var xhr;var xd=false;if(global.location){var isSSL="https:"==location.protocol;var port=location.port;if(!port){port=isSSL?443:80}xd=opts.hostname!=location.hostname||port!=opts.port}opts.xdomain=xd;xhr=new XMLHttpRequest(opts);if("open"in xhr&&!opts.forceJSONP){return new XHR(opts)}else{return new JSONP(opts)}}},{"./polling-jsonp":16,"./polling-xhr":17,"./websocket":19,xmlhttprequest:20}],16:[function(require,module,exports){var global=typeof self!=="undefined"?self:typeof window!=="undefined"?window:{};var Polling=require("./polling");var inherit=require("component-inherit");module.exports=JSONPPolling;var rNewline=/\n/g;var rEscapedNewline=/\\n/g;var callbacks;var index=0;function empty(){}function JSONPPolling(opts){Polling.call(this,opts);this.query=this.query||{};if(!callbacks){if(!global.___eio)global.___eio=[];callbacks=global.___eio}this.index=callbacks.length;var self=this;callbacks.push(function(msg){self.onData(msg)});this.query.j=this.index;if(global.document&&global.addEventListener){global.addEventListener("beforeunload",function(){if(self.script)self.script.onerror=empty})}}inherit(JSONPPolling,Polling);JSONPPolling.prototype.supportsBinary=false;JSONPPolling.prototype.doClose=function(){if(this.script){this.script.parentNode.removeChild(this.script);this.script=null}if(this.form){this.form.parentNode.removeChild(this.form);this.form=null}Polling.prototype.doClose.call(this)};JSONPPolling.prototype.doPoll=function(){var self=this;var script=document.createElement("script");if(this.script){this.script.parentNode.removeChild(this.script);this.script=null}script.async=true;script.src=this.uri();script.onerror=function(e){self.onError("jsonp poll error",e)};var insertAt=document.getElementsByTagName("script")[0];insertAt.parentNode.insertBefore(script,insertAt);this.script=script;var isUAgecko="undefined"!=typeof navigator&&/gecko/i.test(navigator.userAgent);if(isUAgecko){setTimeout(function(){var iframe=document.createElement("iframe");document.body.appendChild(iframe);document.body.removeChild(iframe)},100)}};JSONPPolling.prototype.doWrite=function(data,fn){var self=this;if(!this.form){var form=document.createElement("form");var area=document.createElement("textarea");var id=this.iframeId="eio_iframe_"+this.index;var iframe;form.className="socketio";form.style.position="absolute";form.style.top="-1000px";form.style.left="-1000px";form.target=id;form.method="POST";form.setAttribute("accept-charset","utf-8");area.name="d";form.appendChild(area);document.body.appendChild(form);this.form=form;this.area=area}this.form.action=this.uri();function complete(){initIframe();fn()}function initIframe(){if(self.iframe){try{self.form.removeChild(self.iframe)
}catch(e){self.onError("jsonp polling iframe removal error",e)}}try{var html='<iframe src="javascript:0" name="'+self.iframeId+'">';iframe=document.createElement(html)}catch(e){iframe=document.createElement("iframe");iframe.name=self.iframeId;iframe.src="javascript:0"}iframe.id=self.iframeId;self.form.appendChild(iframe);self.iframe=iframe}initIframe();data=data.replace(rEscapedNewline,"\\\n");this.area.value=data.replace(rNewline,"\\n");try{this.form.submit()}catch(e){}if(this.iframe.attachEvent){this.iframe.onreadystatechange=function(){if(self.iframe.readyState=="complete"){complete()}}}else{this.iframe.onload=complete}}},{"./polling":18,"component-inherit":21}],17:[function(require,module,exports){var global=typeof self!=="undefined"?self:typeof window!=="undefined"?window:{};var XMLHttpRequest=require("xmlhttprequest");var Polling=require("./polling");var Emitter=require("component-emitter");var inherit=require("component-inherit");var debug=require("debug")("engine.io-client:polling-xhr");module.exports=XHR;module.exports.Request=Request;function empty(){}function XHR(opts){Polling.call(this,opts);if(global.location){var isSSL="https:"==location.protocol;var port=location.port;if(!port){port=isSSL?443:80}this.xd=opts.hostname!=global.location.hostname||port!=opts.port}}inherit(XHR,Polling);XHR.prototype.supportsBinary=true;XHR.prototype.request=function(opts){opts=opts||{};opts.uri=this.uri();opts.xd=this.xd;opts.agent=this.agent||false;opts.supportsBinary=this.supportsBinary;return new Request(opts)};XHR.prototype.doWrite=function(data,fn){var isBinary=typeof data!=="string"&&data!==undefined;var req=this.request({method:"POST",data:data,isBinary:isBinary});var self=this;req.on("success",fn);req.on("error",function(err){self.onError("xhr post error",err)});this.sendXhr=req};XHR.prototype.doPoll=function(){debug("xhr poll");var req=this.request();var self=this;req.on("data",function(data){self.onData(data)});req.on("error",function(err){self.onError("xhr poll error",err)});this.pollXhr=req};function Request(opts){this.method=opts.method||"GET";this.uri=opts.uri;this.xd=!!opts.xd;this.async=false!==opts.async;this.data=undefined!=opts.data?opts.data:null;this.agent=opts.agent;this.create(opts.isBinary,opts.supportsBinary)}Emitter(Request.prototype);Request.prototype.create=function(isBinary,supportsBinary){var xhr=this.xhr=new XMLHttpRequest({agent:this.agent,xdomain:this.xd});var self=this;try{debug("xhr open %s: %s",this.method,this.uri);xhr.open(this.method,this.uri,this.async);if(supportsBinary){xhr.responseType="arraybuffer"}if("POST"==this.method){try{if(isBinary){xhr.setRequestHeader("Content-type","application/octet-stream")}else{xhr.setRequestHeader("Content-type","text/plain;charset=UTF-8")}}catch(e){}}if("withCredentials"in xhr){xhr.withCredentials=true}xhr.onreadystatechange=function(){var data;try{if(4!=xhr.readyState)return;if(200==xhr.status||1223==xhr.status){var contentType=xhr.getResponseHeader("Content-Type");if(contentType==="application/octet-stream"){data=xhr.response}else{if(!supportsBinary){data=xhr.responseText}else{data="ok"}}}else{setTimeout(function(){self.onError(xhr.status)},0)}}catch(e){self.onError(e)}if(null!=data){self.onData(data)}};debug("xhr data %s",this.data);xhr.send(this.data)}catch(e){setTimeout(function(){self.onError(e)},0);return}if(global.document){this.index=Request.requestsCount++;Request.requests[this.index]=this}};Request.prototype.onSuccess=function(){this.emit("success");this.cleanup()};Request.prototype.onData=function(data){this.emit("data",data);this.onSuccess()};Request.prototype.onError=function(err){this.emit("error",err);this.cleanup()};Request.prototype.cleanup=function(){if("undefined"==typeof this.xhr||null===this.xhr){return}this.xhr.onreadystatechange=empty;try{this.xhr.abort()}catch(e){}if(global.document){delete Request.requests[this.index]}this.xhr=null};Request.prototype.abort=function(){this.cleanup()};if(global.document){Request.requestsCount=0;Request.requests={};if(global.attachEvent){global.attachEvent("onunload",unloadHandler)}else if(global.addEventListener){global.addEventListener("beforeunload",unloadHandler)}}function unloadHandler(){for(var i in Request.requests){if(Request.requests.hasOwnProperty(i)){Request.requests[i].abort()}}}},{"./polling":18,"component-emitter":8,"component-inherit":21,debug:9,xmlhttprequest:20}],18:[function(require,module,exports){var Transport=require("../transport");var parseqs=require("parseqs");var parser=require("engine.io-parser");var inherit=require("component-inherit");var debug=require("debug")("engine.io-client:polling");module.exports=Polling;var hasXHR2=function(){var XMLHttpRequest=require("xmlhttprequest");var xhr=new XMLHttpRequest({agent:this.agent,xdomain:false});return null!=xhr.responseType}();function Polling(opts){var forceBase64=opts&&opts.forceBase64;if(!hasXHR2||forceBase64){this.supportsBinary=false}Transport.call(this,opts)}inherit(Polling,Transport);Polling.prototype.name="polling";Polling.prototype.doOpen=function(){this.poll()};Polling.prototype.pause=function(onPause){var pending=0;var self=this;this.readyState="pausing";function pause(){debug("paused");self.readyState="paused";onPause()}if(this.polling||!this.writable){var total=0;if(this.polling){debug("we are currently polling - waiting to pause");total++;this.once("pollComplete",function(){debug("pre-pause polling complete");--total||pause()})}if(!this.writable){debug("we are currently writing - waiting to pause");total++;this.once("drain",function(){debug("pre-pause writing complete");--total||pause()})}}else{pause()}};Polling.prototype.poll=function(){debug("polling");this.polling=true;this.doPoll();this.emit("poll")};Polling.prototype.onData=function(data){var self=this;debug("polling got data %s",data);var callback=function(packet,index,total){if("opening"==self.readyState){self.onOpen()}if("close"==packet.type){self.onClose();return false}self.onPacket(packet)};parser.decodePayload(data,this.socket.binaryType,callback);if("closed"!=this.readyState){this.polling=false;this.emit("pollComplete");if("open"==this.readyState){this.poll()}else{debug('ignoring poll - transport state "%s"',this.readyState)}}};Polling.prototype.doClose=function(){var self=this;function close(){debug("writing close packet");self.write([{type:"close"}])}if("open"==this.readyState){debug("transport open - closing");close()}else{debug("transport not open - deferring close");this.once("open",close)}};Polling.prototype.write=function(packets){var self=this;this.writable=false;var callbackfn=function(){self.writable=true;self.emit("drain")};var self=this;parser.encodePayload(packets,this.supportsBinary,function(data){self.doWrite(data,callbackfn)})};Polling.prototype.uri=function(){var query=this.query||{};var schema=this.secure?"https":"http";var port="";if(false!==this.timestampRequests){query[this.timestampParam]=+new Date+"-"+Transport.timestamps++}if(!this.supportsBinary&&!query.sid){query.b64=1}query=parseqs.encode(query);if(this.port&&("https"==schema&&this.port!=443||"http"==schema&&this.port!=80)){port=":"+this.port}if(query.length){query="?"+query}return schema+"://"+this.hostname+port+this.path+query}},{"../transport":14,"component-inherit":21,debug:9,"engine.io-parser":22,parseqs:30,xmlhttprequest:20}],19:[function(require,module,exports){var Transport=require("../transport");var parser=require("engine.io-parser");var parseqs=require("parseqs");var inherit=require("component-inherit");var debug=require("debug")("engine.io-client:websocket");var WebSocket=require("ws");module.exports=WS;function WS(opts){var forceBase64=opts&&opts.forceBase64;if(forceBase64){this.supportsBinary=false}Transport.call(this,opts)}inherit(WS,Transport);WS.prototype.name="websocket";WS.prototype.supportsBinary=true;WS.prototype.doOpen=function(){if(!this.check()){return}var self=this;var uri=this.uri();var protocols=void 0;var opts={agent:this.agent};this.ws=new WebSocket(uri,protocols,opts);if(this.ws.binaryType===undefined){this.supportsBinary=false}this.ws.binaryType="arraybuffer";this.addEventListeners()};WS.prototype.addEventListeners=function(){var self=this;this.ws.onopen=function(){self.onOpen()};this.ws.onclose=function(){self.onClose()};this.ws.onmessage=function(ev){self.onData(ev.data)};this.ws.onerror=function(e){self.onError("websocket error",e)}};if("undefined"!=typeof navigator&&/iPad|iPhone|iPod/i.test(navigator.userAgent)){WS.prototype.onData=function(data){var self=this;setTimeout(function(){Transport.prototype.onData.call(self,data)},0)}}WS.prototype.write=function(packets){var self=this;this.writable=false;for(var i=0,l=packets.length;i<l;i++){parser.encodePacket(packets[i],this.supportsBinary,function(data){try{self.ws.send(data)}catch(e){debug("websocket closed before onclose event")}})}function ondrain(){self.writable=true;self.emit("drain")}setTimeout(ondrain,0)};WS.prototype.onClose=function(){Transport.prototype.onClose.call(this)};WS.prototype.doClose=function(){if(typeof this.ws!=="undefined"){this.ws.close()}};WS.prototype.uri=function(){var query=this.query||{};var schema=this.secure?"wss":"ws";var port="";if(this.port&&("wss"==schema&&this.port!=443||"ws"==schema&&this.port!=80)){port=":"+this.port}if(this.timestampRequests){query[this.timestampParam]=+new Date}if(!this.supportsBinary){query.b64=1}query=parseqs.encode(query);if(query.length){query="?"+query}return schema+"://"+this.hostname+port+this.path+query};WS.prototype.check=function(){return!!WebSocket&&!("__initialize"in WebSocket&&this.name===WS.prototype.name)}},{"../transport":14,"component-inherit":21,debug:9,"engine.io-parser":22,parseqs:30,ws:31}],20:[function(require,module,exports){var hasCORS=require("has-cors");module.exports=function(opts){var xdomain=opts.xdomain;try{if("undefined"!=typeof XMLHttpRequest&&(!xdomain||hasCORS)){return new XMLHttpRequest}}catch(e){}if(!xdomain){try{return new ActiveXObject("Microsoft.XMLHTTP")}catch(e){}}}},{"has-cors":34}],21:[function(require,module,exports){module.exports=function(a,b){var fn=function(){};fn.prototype=b.prototype;a.prototype=new fn;a.prototype.constructor=a}},{}],22:[function(require,module,exports){var global=typeof self!=="undefined"?self:typeof window!=="undefined"?window:{};var keys=require("./keys");var sliceBuffer=require("arraybuffer.slice");var base64encoder=require("base64-arraybuffer");var after=require("after");var utf8=require("utf8");var isAndroid=navigator.userAgent.match(/Android/i);exports.protocol=2;var packets=exports.packets={open:0,close:1,ping:2,pong:3,message:4,upgrade:5,noop:6};var packetslist=keys(packets);var err={type:"error",data:"parser error"};var Blob=require("blob");exports.encodePacket=function(packet,supportsBinary,callback){if(typeof supportsBinary=="function"){callback=supportsBinary;supportsBinary=false}var data=packet.data===undefined?undefined:packet.data.buffer||packet.data;if(global.ArrayBuffer&&data instanceof ArrayBuffer){return encodeArrayBuffer(packet,supportsBinary,callback)}else if(Blob&&data instanceof global.Blob){return encodeBlob(packet,supportsBinary,callback)}var encoded=packets[packet.type];if(undefined!==packet.data){encoded+=utf8.encode(String(packet.data))}return callback(""+encoded)};function encodeArrayBuffer(packet,supportsBinary,callback){if(!supportsBinary){return exports.encodeBase64Packet(packet,callback)}var data=packet.data;var contentArray=new Uint8Array(data);var resultBuffer=new Uint8Array(1+data.byteLength);resultBuffer[0]=packets[packet.type];for(var i=0;i<contentArray.length;i++){resultBuffer[i+1]=contentArray[i]}return callback(resultBuffer.buffer)}function encodeBlobAsArrayBuffer(packet,supportsBinary,callback){if(!supportsBinary){return exports.encodeBase64Packet(packet,callback)}var fr=new FileReader;fr.onload=function(){packet.data=fr.result;exports.encodePacket(packet,supportsBinary,callback)};return fr.readAsArrayBuffer(packet.data)}function encodeBlob(packet,supportsBinary,callback){if(!supportsBinary){return exports.encodeBase64Packet(packet,callback)}if(isAndroid){return encodeBlobAsArrayBuffer(packet,supportsBinary,callback)}var length=new Uint8Array(1);length[0]=packets[packet.type];var blob=new Blob([length.buffer,packet.data]);return callback(blob)}exports.encodeBase64Packet=function(packet,callback){var message="b"+exports.packets[packet.type];if(Blob&&packet.data instanceof Blob){var fr=new FileReader;fr.onload=function(){var b64=fr.result.split(",")[1];callback(message+b64)};return fr.readAsDataURL(packet.data)}var b64data;try{b64data=String.fromCharCode.apply(null,new Uint8Array(packet.data))}catch(e){var typed=new Uint8Array(packet.data);var basic=new Array(typed.length);for(var i=0;i<typed.length;i++){basic[i]=typed[i]}b64data=String.fromCharCode.apply(null,basic)}message+=global.btoa(b64data);return callback(message)};exports.decodePacket=function(data,binaryType){if(typeof data=="string"||data===undefined){if(data.charAt(0)=="b"){return exports.decodeBase64Packet(data.substr(1),binaryType)}data=utf8.decode(data);var type=data.charAt(0);if(Number(type)!=type||!packetslist[type]){return err}if(data.length>1){return{type:packetslist[type],data:data.substring(1)}}else{return{type:packetslist[type]}}}var asArray=new Uint8Array(data);var type=asArray[0];var rest=sliceBuffer(data,1);if(Blob&&binaryType==="blob"){rest=new Blob([rest])}return{type:packetslist[type],data:rest}};exports.decodeBase64Packet=function(msg,binaryType){var type=packetslist[msg.charAt(0)];if(!global.ArrayBuffer){return{type:type,data:{base64:true,data:msg.substr(1)}}}var data=base64encoder.decode(msg.substr(1));if(binaryType==="blob"&&Blob){data=new Blob([data])}return{type:type,data:data}};exports.encodePayload=function(packets,supportsBinary,callback){if(typeof supportsBinary=="function"){callback=supportsBinary;supportsBinary=null}if(supportsBinary){if(Blob&&!isAndroid){return exports.encodePayloadAsBlob(packets,callback)}return exports.encodePayloadAsArrayBuffer(packets,callback)}if(!packets.length){return callback("0:")}function setLengthHeader(message){return message.length+":"+message}function encodeOne(packet,doneCallback){exports.encodePacket(packet,supportsBinary,function(message){doneCallback(null,setLengthHeader(message))})}map(packets,encodeOne,function(err,results){return callback(results.join(""))})};function map(ary,each,done){var result=new Array(ary.length);var next=after(ary.length,done);var eachWithIndex=function(i,el,cb){each(el,function(error,msg){result[i]=msg;cb(error,result)})};for(var i=0;i<ary.length;i++){eachWithIndex(i,ary[i],next)}}exports.decodePayload=function(data,binaryType,callback){if(typeof data!="string"){return exports.decodePayloadAsBinary(data,binaryType,callback)}if(typeof binaryType==="function"){callback=binaryType;binaryType=null}var packet;if(data==""){return callback(err,0,1)}var length="",n,msg;for(var i=0,l=data.length;i<l;i++){var chr=data.charAt(i);if(":"!=chr){length+=chr}else{if(""==length||length!=(n=Number(length))){return callback(err,0,1)}msg=data.substr(i+1,n);if(length!=msg.length){return callback(err,0,1)}if(msg.length){packet=exports.decodePacket(msg,binaryType);if(err.type==packet.type&&err.data==packet.data){return callback(err,0,1)}var ret=callback(packet,i+n,l);if(false===ret)return}i+=n;length=""}}if(length!=""){return callback(err,0,1)}};exports.encodePayloadAsArrayBuffer=function(packets,callback){if(!packets.length){return callback(new ArrayBuffer(0))}function encodeOne(packet,doneCallback){exports.encodePacket(packet,true,function(data){return doneCallback(null,data)})}map(packets,encodeOne,function(err,encodedPackets){var totalLength=encodedPackets.reduce(function(acc,p){var len;if(typeof p==="string"){len=p.length}else{len=p.byteLength}return acc+len.toString().length+len+2},0);var resultArray=new Uint8Array(totalLength);var bufferIndex=0;encodedPackets.forEach(function(p){var isString=typeof p==="string";var ab=p;if(isString){var view=new Uint8Array(p.length);for(var i=0;i<p.length;i++){view[i]=p.charCodeAt(i)}ab=view.buffer}if(isString){resultArray[bufferIndex++]=0}else{resultArray[bufferIndex++]=1}var lenStr=ab.byteLength.toString();for(var i=0;i<lenStr.length;i++){resultArray[bufferIndex++]=parseInt(lenStr[i])}resultArray[bufferIndex++]=255;var view=new Uint8Array(ab);for(var i=0;i<view.length;i++){resultArray[bufferIndex++]=view[i]}});return callback(resultArray.buffer)})};exports.encodePayloadAsBlob=function(packets,callback){function encodeOne(packet,doneCallback){exports.encodePacket(packet,true,function(encoded){var binaryIdentifier=new Uint8Array(1);binaryIdentifier[0]=1;if(typeof encoded==="string"){var view=new Uint8Array(encoded.length);for(var i=0;i<encoded.length;i++){view[i]=encoded.charCodeAt(i)}encoded=view.buffer;binaryIdentifier[0]=0}var len=encoded instanceof ArrayBuffer?encoded.byteLength:encoded.size;var lenStr=len.toString();var lengthAry=new Uint8Array(lenStr.length+1);for(var i=0;i<lenStr.length;i++){lengthAry[i]=parseInt(lenStr[i])}lengthAry[lenStr.length]=255;if(Blob){var blob=new Blob([binaryIdentifier.buffer,lengthAry.buffer,encoded]);doneCallback(null,blob)}})}map(packets,encodeOne,function(err,results){return callback(new Blob(results))})};exports.decodePayloadAsBinary=function(data,binaryType,callback){if(typeof binaryType==="function"){callback=binaryType;binaryType=null}var bufferTail=data;var buffers=[];while(bufferTail.byteLength>0){var tailArray=new Uint8Array(bufferTail);var isString=tailArray[0]===0;var msgLength="";for(var i=1;;i++){if(tailArray[i]==255)break;msgLength+=tailArray[i]}bufferTail=sliceBuffer(bufferTail,2+msgLength.length);msgLength=parseInt(msgLength);var msg=sliceBuffer(bufferTail,0,msgLength);if(isString){try{msg=String.fromCharCode.apply(null,new Uint8Array(msg))}catch(e){var typed=new Uint8Array(msg);msg="";for(var i=0;i<typed.length;i++){msg+=String.fromCharCode(typed[i])}}}buffers.push(msg);bufferTail=slic