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livecodingspace...
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public
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lib
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socket.io
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socket.io.slim.js

socket.io.slim.js 52 KB
История Исходник

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  1. /*!
    2. 

  2.  * Socket.IO v2.1.1
    3. 

  3.  * (c) 2014-2018 Guillermo Rauch
    4. 

  4.  * Released under the MIT License.
    5. 

  5.  */
    6. 

  6. !function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.io=e():t.io=e()}(this,function(){return function(t){function e(n){if(r[n])return r[n].exports;var o=r[n]={exports:{},id:n,loaded:!1};return t[n].call(o.exports,o,o.exports,e),o.loaded=!0,o.exports}var r={};return e.m=t,e.c=r,e.p="",e(0)}([function(t,e,r){"use strict";function n(t,e){"object"===("undefined"==typeof t?"undefined":o(t))&&(e=t,t=void 0),e=e||{};var r,n=i(t),s=n.source,h=n.id,p=n.path,u=c[h]&&p in c[h].nsps,f=e.forceNew||e["force new connection"]||!1===e.multiplex||u;return f?r=a(s,e):(c[h]||(c[h]=a(s,e)),r=c[h]),n.query&&!e.query&&(e.query=n.query),r.socket(n.path,e)}var o="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(t){return typeof t}:function(t){return t&&"function"==typeof Symbol&&t.constructor===Symbol&&t!==Symbol.prototype?"symbol":typeof t},i=r(1),s=r(4),a=r(9);r(3)("socket.io-client");t.exports=e=n;var c=e.managers={};e.protocol=s.protocol,e.connect=n,e.Manager=r(9),e.Socket=r(34)},function(t,e,r){(function(e){"use strict";function n(t,r){var n=t;r=r||e.location,null==t&&(t=r.protocol+"//"+r.host),"string"==typeof t&&("/"===t.charAt(0)&&(t="/"===t.charAt(1)?r.protocol+t:r.host+t),/^(https?|wss?):\/\//.test(t)||(t="undefined"!=typeof r?r.protocol+"//"+t:"https://"+t),n=o(t)),n.port||(/^(http|ws)$/.test(n.protocol)?n.port="80":/^(http|ws)s$/.test(n.protocol)&&(n.port="443")),n.path=n.path||"/";var i=n.host.indexOf(":")!==-1,s=i?"["+n.host+"]":n.host;return n.id=n.protocol+"://"+s+":"+n.port,n.href=n.protocol+"://"+s+(r&&r.port===n.port?"":":"+n.port),n}var o=r(2);r(3)("socket.io-client:url");t.exports=n}).call(e,function(){return this}())},function(t,e){var r=/^(?:(?![^:@]+:[^:@\/]*@)(http|https|ws|wss):\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/,n=["source","protocol","authority","userInfo","user","password","host","port","relative","path","directory","file","query","anchor"];t.exports=function(t){var e=t,o=t.indexOf("["),i=t.indexOf("]");o!=-1&&i!=-1&&(t=t.substring(0,o)+t.substring(o,i).replace(/:/g,";")+t.substring(i,t.length));for(var s=r.exec(t||""),a={},c=14;c--;)a[n[c]]=s[c]||"";return o!=-1&&i!=-1&&(a.source=e,a.host=a.host.substring(1,a.host.length-1).replace(/;/g,":"),a.authority=a.authority.replace("[","").replace("]","").replace(/;/g,":"),a.ipv6uri=!0),a}},function(t,e){"use strict";t.exports=function(){return function(){}}},function(t,e,r){function n(){}function o(t){var r=""+t.type;if(e.BINARY_EVENT!==t.type&&e.BINARY_ACK!==t.type||(r+=t.attachments+"-"),t.nsp&&"/"!==t.nsp&&(r+=t.nsp+","),null!=t.id&&(r+=t.id),null!=t.data){var n=i(t.data);if(n===!1)return m;r+=n}return r}function i(t){try{return JSON.stringify(t)}catch(t){return!1}}function s(t,e){function r(t){var r=l.deconstructPacket(t),n=o(r.packet),i=r.buffers;i.unshift(n),e(i)}l.removeBlobs(t,r)}function a(){this.reconstructor=null}function c(t){var r=0,n={type:Number(t.charAt(0))};if(null==e.types[n.type])return u("unknown packet type "+n.type);if(e.BINARY_EVENT===n.type||e.BINARY_ACK===n.type){for(var o="";"-"!==t.charAt(++r)&&(o+=t.charAt(r),r!=t.length););if(o!=Number(o)||"-"!==t.charAt(r))throw new Error("Illegal attachments");n.attachments=Number(o)}if("/"===t.charAt(r+1))for(n.nsp="";++r;){var i=t.charAt(r);if(","===i)break;if(n.nsp+=i,r===t.length)break}else n.nsp="/";var s=t.charAt(r+1);if(""!==s&&Number(s)==s){for(n.id="";++r;){var i=t.charAt(r);if(null==i||Number(i)!=i){--r;break}if(n.id+=t.charAt(r),r===t.length)break}n.id=Number(n.id)}if(t.charAt(++r)){var a=h(t.substr(r)),c=a!==!1&&(n.type===e.ERROR||d(a));if(!c)return u("invalid payload");n.data=a}return n}function h(t){try{return JSON.parse(t)}catch(t){return!1}}function p(t){this.reconPack=t,this.buffers=[]}function u(t){return{type:e.ERROR,data:"parser error: "+t}}var f=(r(3)("socket.io-parser"),r(5)),l=r(6),d=r(7),y=r(8);e.protocol=4,e.types=["CONNECT","DISCONNECT","EVENT","ACK","ERROR","BINARY_EVENT","BINARY_ACK"],e.CONNECT=0,e.DISCONNECT=1,e.EVENT=2,e.ACK=3,e.ERROR=4,e.BINARY_EVENT=5,e.BINARY_ACK=6,e.Encoder=n,e.Decoder=a;var m=e.ERROR+'"encode error"';n.prototype.encode=function(t,r){if(e.BINARY_EVENT===t.type||e.BINARY_ACK===t.type)s(t,r);else{var n=o(t);r([n])}},f(a.prototype),a.prototype.add=function(t){var r;if("string"==typeof t)r=c(t),e.BINARY_EVENT===r.type||e.BINARY_ACK===r.type?(this.reconstructor=new p(r),0===this.reconstructor.reconPack.attachments&&this.emit("decoded",r)):this.emit("decoded",r);else{if(!y(t)&&!t.base64)throw new Error("Unknown type: "+t);if(!this.reconstructor)throw new Error("got binary data when not reconstructing a packet");r=this.reconstructor.takeBinaryData(t),r&&(this.reconstructor=null,this.emit("decoded",r))}},a.prototype.destroy=function(){this.reconstructor&&this.reconstructor.finishedReconstruction()},p.prototype.takeBinaryData=function(t){if(this.buffers.push(t),this.buffers.length===this.reconPack.attachments){var e=l.reconstructPacket(this.reconPack,this.buffers);return this.finishedReconstruction(),e}return null},p.prototype.finishedReconstruction=function(){this.reconPack=null,this.buffers=[]}},function(t,e,r){function n(t){if(t)return o(t)}function o(t){for(var e in n.prototype)t[e]=n.prototype[e];return t}t.exports=n,n.prototype.on=n.prototype.addEventListener=function(t,e){return this._callbacks=this._callbacks||{},(this._callbacks["$"+t]=this._callbacks["$"+t]||[]).push(e),this},n.prototype.once=function(t,e){function r(){this.off(t,r),e.apply(this,arguments)}return r.fn=e,this.on(t,r),this},n.prototype.off=n.prototype.removeListener=n.prototype.removeAllListeners=n.prototype.removeEventListener=function(t,e){if(this._callbacks=this._callbacks||{},0==arguments.length)return this._callbacks={},this;var r=this._callbacks["$"+t];if(!r)return this;if(1==arguments.length)return delete this._callbacks["$"+t],this;for(var n,o=0;o<r.length;o++)if(n=r[o],n===e||n.fn===e){r.splice(o,1);break}return this},n.prototype.emit=function(t){this._callbacks=this._callbacks||{};var e=[].slice.call(arguments,1),r=this._callbacks["$"+t];if(r){r=r.slice(0);for(var n=0,o=r.length;n<o;++n)r[n].apply(this,e)}return this},n.prototype.listeners=function(t){return this._callbacks=this._callbacks||{},this._callbacks["$"+t]||[]},n.prototype.hasListeners=function(t){return!!this.listeners(t).length}},function(t,e,r){(function(t){function n(t,e){if(!t)return t;if(s(t)){var r={_placeholder:!0,num:e.length};return e.push(t),r}if(i(t)){for(var o=new Array(t.length),a=0;a<t.length;a++)o[a]=n(t[a],e);return o}if("object"==typeof t&&!(t instanceof Date)){var o={};for(var c in t)o[c]=n(t[c],e);return o}return t}function o(t,e){if(!t)return t;if(t&&t._placeholder)return e[t.num];if(i(t))for(var r=0;r<t.length;r++)t[r]=o(t[r],e);else if("object"==typeof t)for(var n in t)t[n]=o(t[n],e);return t}var i=r(7),s=r(8),a=Object.prototype.toString,c="function"==typeof t.Blob||"[object BlobConstructor]"===a.call(t.Blob),h="function"==typeof t.File||"[object FileConstructor]"===a.call(t.File);e.deconstructPacket=function(t){var e=[],r=t.data,o=t;return o.data=n(r,e),o.attachments=e.length,{packet:o,buffers:e}},e.reconstructPacket=function(t,e){return t.data=o(t.data,e),t.attachments=void 0,t},e.removeBlobs=function(t,e){function r(t,a,p){if(!t)return t;if(c&&t instanceof Blob||h&&t instanceof File){n++;var u=new FileReader;u.onload=function(){p?p[a]=this.result:o=this.result,--n||e(o)},u.readAsArrayBuffer(t)}else if(i(t))for(var f=0;f<t.length;f++)r(t[f],f,t);else if("object"==typeof t&&!s(t))for(var l in t)r(t[l],l,t)}var n=0,o=t;r(o),n||e(o)}}).call(e,function(){return this}())},function(t,e){var r={}.toString;t.exports=Array.isArray||function(t){return"[object Array]"==r.call(t)}},function(t,e){(function(e){function r(t){return n&&e.Buffer.isBuffer(t)||o&&(t instanceof e.ArrayBuffer||i(t))}t.exports=r;var n="function"==typeof e.Buffer&&"function"==typeof e.Buffer.isBuffer,o="function"==typeof e.ArrayBuffer,i=function(){return o&&"function"==typeof e.ArrayBuffer.isView?e.ArrayBuffer.isView:function(t){return t.buffer instanceof e.ArrayBuffer}}()}).call(e,function(){return this}())},function(t,e,r){"use strict";function n(t,e){if(!(this instanceof n))return new n(t,e);t&&"object"===("undefined"==typeof t?"undefined":o(t))&&(e=t,t=void 0),e=e||{},e.path=e.path||"/socket.io",this.nsps={},this.subs=[],this.opts=e,this.reconnection(e.reconnection!==!1),this.reconnectionAttempts(e.reconnectionAttempts||1/0),this.reconnectionDelay(e.reconnectionDelay||1e3),this.reconnectionDelayMax(e.reconnectionDelayMax||5e3),this.randomizationFactor(e.randomizationFactor||.5),this.backoff=new f({min:this.reconnectionDelay(),max:this.reconnectionDelayMax(),jitter:this.randomizationFactor()}),this.timeout(null==e.timeout?2e4:e.timeout),this.readyState="closed",this.uri=t,this.connecting=[],this.lastPing=null,this.encoding=!1,this.packetBuffer=[];var r=e.parser||c;this.encoder=new r.Encoder,this.decoder=new r.Decoder,this.autoConnect=e.autoConnect!==!1,this.autoConnect&&this.open()}var o="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(t){return typeof t}:function(t){return t&&"function"==typeof Symbol&&t.constructor===Symbol&&t!==Symbol.prototype?"symbol":typeof t},i=r(10),s=r(34),a=r(5),c=r(4),h=r(36),p=r(37),u=(r(3)("socket.io-client:manager"),r(33)),f=r(38),l=Object.prototype.hasOwnProperty;t.exports=n,n.prototype.emitAll=function(){this.emit.apply(this,arguments);for(var t in this.nsps)l.call(this.nsps,t)&&this.nsps[t].emit.apply(this.nsps[t],arguments)},n.prototype.updateSocketIds=function(){for(var t in this.nsps)l.call(this.nsps,t)&&(this.nsps[t].id=this.generateId(t))},n.prototype.generateId=function(t){return("/"===t?"":t+"#")+this.engine.id},a(n.prototype),n.prototype.reconnection=function(t){return arguments.length?(this._reconnection=!!t,this):this._reconnection},n.prototype.reconnectionAttempts=function(t){return arguments.length?(this._reconnectionAttempts=t,this):this._reconnectionAttempts},n.prototype.reconnectionDelay=function(t){return arguments.length?(this._reconnectionDelay=t,this.backoff&&this.backoff.setMin(t),this):this._reconnectionDelay},n.prototype.randomizationFactor=function(t){return arguments.length?(this._randomizationFactor=t,this.backoff&&this.backoff.setJitter(t),this):this._randomizationFactor},n.prototype.reconnectionDelayMax=function(t){return arguments.length?(this._reconnectionDelayMax=t,this.backoff&&this.backoff.setMax(t),this):this._reconnectionDelayMax},n.prototype.timeout=function(t){return arguments.length?(this._timeout=t,this):this._timeout},n.prototype.maybeReconnectOnOpen=function(){!this.reconnecting&&this._reconnection&&0===this.backoff.attempts&&this.reconnect()},n.prototype.open=n.prototype.connect=function(t,e){if(~this.readyState.indexOf("open"))return this;this.engine=i(this.uri,this.opts);var r=this.engine,n=this;this.readyState="opening",this.skipReconnect=!1;var o=h(r,"open",function(){n.onopen(),t&&t()}),s=h(r,"error",function(e){if(n.cleanup(),n.readyState="closed",n.emitAll("connect_error",e),t){var r=new Error("Connection error");r.data=e,t(r)}else n.maybeReconnectOnOpen()});if(!1!==this._timeout){var a=this._timeout,c=setTimeout(function(){o.destroy(),r.close(),r.emit("error","timeout"),n.emitAll("connect_timeout",a)},a);this.subs.push({destroy:function(){clearTimeout(c)}})}return this.subs.push(o),this.subs.push(s),this},n.prototype.onopen=function(){this.cleanup(),this.readyState="open",this.emit("open");var t=this.engine;this.subs.push(h(t,"data",p(this,"ondata"))),this.subs.push(h(t,"ping",p(this,"onping"))),this.subs.push(h(t,"pong",p(this,"onpong"))),this.subs.push(h(t,"error",p(this,"onerror"))),this.subs.push(h(t,"close",p(this,"onclose"))),this.subs.push(h(this.decoder,"decoded",p(this,"ondecoded")))},n.prototype.onping=function(){this.lastPing=new Date,this.emitAll("ping")},n.prototype.onpong=function(){this.emitAll("pong",new Date-this.lastPing)},n.prototype.ondata=function(t){this.decoder.add(t)},n.prototype.ondecoded=function(t){this.emit("packet",t)},n.prototype.onerror=function(t){this.emitAll("error",t)},n.prototype.socket=function(t,e){function r(){~u(o.connecting,n)||o.connecting.push(n)}var n=this.nsps[t];if(!n){n=new s(this,t,e),this.nsps[t]=n;var o=this;n.on("connecting",r),n.on("connect",function(){n.id=o.generateId(t)}),this.autoConnect&&r()}return n},n.prototype.destroy=function(t){var e=u(this.connecting,t);~e&&this.connecting.splice(e,1),this.connecting.length||this.close()},n.prototype.packet=function(t){var e=this;t.query&&0===t.type&&(t.nsp+="?"+t.query),e.encoding?e.packetBuffer.push(t):(e.encoding=!0,this.encoder.encode(t,function(r){for(var n=0;n<r.length;n++)e.engine.write(r[n],t.options);e.encoding=!1,e.processPacketQueue()}))},n.prototype.processPacketQueue=function(){if(this.packetBuffer.length>0&&!this.encoding){var t=this.packetBuffer.shift();this.packet(t)}},n.prototype.cleanup=function(){for(var t=this.subs.length,e=0;e<t;e++){var r=this.subs.shift();r.destroy()}this.packetBuffer=[],this.encoding=!1,this.lastPing=null,this.decoder.destroy()},n.prototype.close=n.prototype.disconnect=function(){this.skipReconnect=!0,this.reconnecting=!1,"opening"===this.readyState&&this.cleanup(),this.backoff.reset(),this.readyState="closed",this.engine&&this.engine.close()},n.prototype.onclose=function(t){this.cleanup(),this.backoff.reset(),this.readyState="closed",this.emit("close",t),this._reconnection&&!this.skipReconnect&&this.reconnect()},n.prototype.reconnect=function(){if(this.reconnecting||this.skipReconnect)return this;var t=this;if(this.backoff.attempts>=this._reconnectionAttempts)this.backoff.reset(),this.emitAll("reconnect_failed"),this.reconnecting=!1;else{var e=this.backoff.duration();this.reconnecting=!0;var r=setTimeout(function(){t.skipReconnect||(t.emitAll("reconnect_attempt",t.backoff.attempts),t.emitAll("reconnecting",t.backoff.attempts),t.skipReconnect||t.open(function(e){e?(t.reconnecting=!1,t.reconnect(),t.emitAll("reconnect_error",e.data)):t.onreconnect()}))},e);this.subs.push({destroy:function(){clearTimeout(r)}})}},n.prototype.onreconnect=function(){var t=this.backoff.attempts;this.reconnecting=!1,this.backoff.reset(),this.updateSocketIds(),this.emitAll("reconnect",t)}},function(t,e,r){t.exports=r(11),t.exports.parser=r(18)},function(t,e,r){(function(e){function n(t,r){if(!(this instanceof n))return new n(t,r);r=r||{},t&&"object"==typeof t&&(r=t,t=null),t?(t=h(t),r.hostname=t.host,r.secure="https"===t.protocol||"wss"===t.protocol,r.port=t.port,t.query&&(r.query=t.query)):r.host&&(r.hostname=h(r.host).host),this.secure=null!=r.secure?r.secure:e.location&&"https:"===location.protocol,r.hostname&&!r.port&&(r.port=this.secure?"443":"80"),this.agent=r.agent||!1,this.hostname=r.hostname||(e.location?location.hostname:"localhost"),this.port=r.port||(e.location&&location.port?location.port:this.secure?443:80),this.query=r.query||{},"string"==typeof this.query&&(this.query=p.decode(this.query)),this.upgrade=!1!==r.upgrade,this.path=(r.path||"/engine.io").replace(/\/$/,"")+"/",this.forceJSONP=!!r.forceJSONP,this.jsonp=!1!==r.jsonp,this.forceBase64=!!r.forceBase64,this.enablesXDR=!!r.enablesXDR,this.timestampParam=r.timestampParam||"t",this.timestampRequests=r.timestampRequests,this.transports=r.transports||["polling","websocket"],this.transportOptions=r.transportOptions||{},this.readyState="",this.writeBuffer=[],this.prevBufferLen=0,this.policyPort=r.policyPort||843,this.rememberUpgrade=r.rememberUpgrade||!1,this.binaryType=null,this.onlyBinaryUpgrades=r.onlyBinaryUpgrades,this.perMessageDeflate=!1!==r.perMessageDeflate&&(r.perMessageDeflate||{}),!0===this.perMessageDeflate&&(this.perMessageDeflate={}),this.perMessageDeflate&&null==this.perMessageDeflate.threshold&&(this.perMessageDeflate.threshold=1024),this.pfx=r.pfx||null,this.key=r.key||null,this.passphrase=r.passphrase||null,this.cert=r.cert||null,this.ca=r.ca||null,this.ciphers=r.ciphers||null,this.rejectUnauthorized=void 0===r.rejectUnauthorized||r.rejectUnauthorized,this.forceNode=!!r.forceNode;var o="object"==typeof e&&e;o.global===o&&(r.extraHeaders&&Object.keys(r.extraHeaders).length>0&&(this.extraHeaders=r.extraHeaders),r.localAddress&&(this.localAddress=r.localAddress)),this.id=null,this.upgrades=null,this.pingInterval=null,this.pingTimeout=null,this.pingIntervalTimer=null,this.pingTimeoutTimer=null,this.open()}function o(t){var e={};for(var r in t)t.hasOwnProperty(r)&&(e[r]=t[r]);return e}var i=r(12),s=r(5),a=(r(3)("engine.io-client:socket"),r(33)),c=r(18),h=r(2),p=r(27);t.exports=n,n.priorWebsocketSuccess=!1,s(n.prototype),n.protocol=c.protocol,n.Socket=n,n.Transport=r(17),n.transports=r(12),n.parser=r(18),n.prototype.createTransport=function(t){var e=o(this.query);e.EIO=c.protocol,e.transport=t;var r=this.transportOptions[t]||{};this.id&&(e.sid=this.id);var n=new i[t]({query:e,socket:this,agent:r.agent||this.agent,hostname:r.hostname||this.hostname,port:r.port||this.port,secure:r.secure||this.secure,path:r.path||this.path,forceJSONP:r.forceJSONP||this.forceJSONP,jsonp:r.jsonp||this.jsonp,forceBase64:r.forceBase64||this.forceBase64,enablesXDR:r.enablesXDR||this.enablesXDR,timestampRequests:r.timestampRequests||this.timestampRequests,timestampParam:r.timestampParam||this.timestampParam,policyPort:r.policyPort||this.policyPort,pfx:r.pfx||this.pfx,key:r.key||this.key,passphrase:r.passphrase||this.passphrase,cert:r.cert||this.cert,ca:r.ca||this.ca,ciphers:r.ciphers||this.ciphers,rejectUnauthorized:r.rejectUnauthorized||this.rejectUnauthorized,perMessageDeflate:r.perMessageDeflate||this.perMessageDeflate,extraHeaders:r.extraHeaders||this.extraHeaders,forceNode:r.forceNode||this.forceNode,localAddress:r.localAddress||this.localAddress,requestTimeout:r.requestTimeout||this.requestTimeout,protocols:r.protocols||void 0});return n},n.prototype.open=function(){var t;if(this.rememberUpgrade&&n.priorWebsocketSuccess&&this.transports.indexOf("websocket")!==-1)t="websocket";else{if(0===this.transports.length){var e=this;return void setTimeout(function(){e.emit("error","No transports available")},0)}t=this.transports[0]}this.readyState="opening";try{t=this.createTransport(t)}catch(t){return this.transports.shift(),void this.open()}t.open(),this.setTransport(t)},n.prototype.setTransport=function(t){var e=this;this.transport&&this.transport.removeAllListeners(),this.transport=t,t.on("drain",function(){e.onDrain()}).on("packet",function(t){e.onPacket(t)}).on("error",function(t){e.onError(t)}).on("close",function(){e.onClose("transport close")})},n.prototype.probe=function(t){function e(){if(u.onlyBinaryUpgrades){var t=!this.supportsBinary&&u.transport.supportsBinary;p=p||t}p||(h.send([{type:"ping",data:"probe"}]),h.once("packet",function(t){if(!p)if("pong"===t.type&&"probe"===t.data){if(u.upgrading=!0,u.emit("upgrading",h),!h)return;n.priorWebsocketSuccess="websocket"===h.name,u.transport.pause(function(){p||"closed"!==u.readyState&&(c(),u.setTransport(h),h.send([{type:"upgrade"}]),u.emit("upgrade",h),h=null,u.upgrading=!1,u.flush())})}else{var e=new Error("probe error");e.transport=h.name,u.emit("upgradeError",e)}}))}function r(){p||(p=!0,c(),h.close(),h=null)}function o(t){var e=new Error("probe error: "+t);e.transport=h.name,r(),u.emit("upgradeError",e)}function i(){o("transport closed")}function s(){o("socket closed")}function a(t){h&&t.name!==h.name&&r()}function c(){h.removeListener("open",e),h.removeListener("error",o),h.removeListener("close",i),u.removeListener("close",s),u.removeListener("upgrading",a)}var h=this.createTransport(t,{probe:1}),p=!1,u=this;n.priorWebsocketSuccess=!1,h.once("open",e),h.once("error",o),h.once("close",i),this.once("close",s),this.once("upgrading",a),h.open()},n.prototype.onOpen=function(){if(this.readyState="open",n.priorWebsocketSuccess="websocket"===this.transport.name,this.emit("open"),this.flush(),"open"===this.readyState&&this.upgrade&&this.transport.pause)for(var t=0,e=this.upgrades.length;t<e;t++)this.probe(this.upgrades[t])},n.prototype.onPacket=function(t){if("opening"===this.readyState||"open"===this.readyState||"closing"===this.readyState)switch(this.emit("packet",t),this.emit("heartbeat"),t.type){case"open":this.onHandshake(JSON.parse(t.data));break;case"pong":this.setPing(),this.emit("pong");break;case"error":var e=new Error("server error");e.code=t.data,this.onError(e);break;case"message":this.emit("data",t.data),this.emit("message",t.data)}},n.prototype.onHandshake=function(t){this.emit("handshake",t),this.id=t.sid,this.transport.query.sid=t.sid,this.upgrades=this.filterUpgrades(t.upgrades),this.pingInterval=t.pingInterval,this.pingTimeout=t.pingTimeout,this.onOpen(),"closed"!==this.readyState&&(this.setPing(),this.removeListener("heartbeat",this.onHeartbeat),this.on("heartbeat",this.onHeartbeat))},n.prototype.onHeartbeat=function(t){clearTimeout(this.pingTimeoutTimer);var e=this;e.pingTimeoutTimer=setTimeout(function(){"closed"!==e.readyState&&e.onClose("ping timeout")},t||e.pingInterval+e.pingTimeout)},n.prototype.setPing=function(){var t=this;clearTimeout(t.pingIntervalTimer),t.pingIntervalTimer=setTimeout(function(){t.ping(),t.onHeartbeat(t.pingTimeout)},t.pingInterval)},n.prototype.ping=function(){var t=this;this.sendPacket("ping",function(){t.emit("ping")})},n.prototype.onDrain=function(){this.writeBuffer.splice(0,this.prevBufferLen),this.prevBufferLen=0,0===this.writeBuffer.length?this.emit("drain"):this.flush()},n.prototype.flush=function(){"closed"!==this.readyState&&this.transport.writable&&!this.upgrading&&this.writeBuffer.length&&(this.transport.send(this.writeBuffer),this.prevBufferLen=this.writeBuffer.length,this.emit("flush"))},n.prototype.write=n.prototype.send=function(t,e,r){return this.sendPacket("message",t,e,r),this},n.prototype.sendPacket=function(t,e,r,n){if("function"==typeof e&&(n=e,e=void 0),"function"==typeof r&&(n=r,r=null),"closing"!==this.readyState&&"closed"!==this.readyState){r=r||{},r.compress=!1!==r.compress;var o={type:t,data:e,options:r};this.emit("packetCreate",o),this.writeBuffer.push(o),n&&this.once("flush",n),this.flush()}},n.prototype.close=function(){function t(){n.onClose("forced close"),n.transport.close()}function e(){n.removeListener("upgrade",e),n.removeListener("upgradeError",e),t()}function r(){n.once("upgrade",e),n.once("upgradeError",e)}if("opening"===this.readyState||"open"===this.readyState){this.readyState="closing";var n=this;this.writeBuffer.length?this.once("drain",function(){this.upgrading?r():t()}):this.upgrading?r():t()}return this},n.prototype.onError=function(t){n.priorWebsocketSuccess=!1,this.emit("error",t),this.onClose("transport error",t)},n.prototype.onClose=function(t,e){if("opening"===this.readyState||"open"===this.readyState||"closing"===this.readyState){var r=this;clearTimeout(this.pingIntervalTimer),clearTimeout(this.pingTimeoutTimer),this.transport.removeAllListeners("close"),this.transport.close(),this.transport.removeAllListeners(),this.readyState="closed",this.id=null,this.emit("close",t,e),r.writeBuffer=[],r.prevBufferLen=0}},n.prototype.filterUpgrades=function(t){for(var e=[],r=0,n=t.length;r<n;r++)~a(this.transports,t[r])&&e.push(t[r]);return e}}).call(e,function(){return this}())},function(t,e,r){(function(t){function n(e){var r,n=!1,a=!1,c=!1!==e.jsonp;if(t.location){var h="https:"===location.protocol,p=location.port;p||(p=h?443:80),n=e.hostname!==location.hostname||p!==e.port,a=e.secure!==h}if(e.xdomain=n,e.xscheme=a,r=new o(e),"open"in r&&!e.forceJSONP)return new i(e);if(!c)throw new Error("JSONP disabled");return new s(e)}var o=r(13),i=r(15),s=r(30),a=r(31);e.polling=n,e.websocket=a}).call(e,function(){return this}())},function(t,e,r){(function(e){var n=r(14);t.exports=function(t){var r=t.xdomain,o=t.xscheme,i=t.enablesXDR;try{if("undefined"!=typeof XMLHttpRequest&&(!r||n))return new XMLHttpRequest}catch(t){}try{if("undefined"!=typeof XDomainRequest&&!o&&i)return new XDomainRequest}catch(t){}if(!r)try{return new(e[["Active"].concat("Object").join("X")])("Microsoft.XMLHTTP")}catch(t){}}}).call(e,function(){return this}())},function(t,e){try{t.exports="undefined"!=typeof XMLHttpRequest&&"withCredentials"in new XMLHttpRequest}catch(e){t.exports=!1}},function(t,e,r){(function(e){function n(){}function o(t){if(c.call(this,t),this.requestTimeout=t.requestTimeout,this.extraHeaders=t.extraHeaders,e.location){var r="https:"===location.protocol,n=location.port;n||(n=r?443:80),this.xd=t.hostname!==e.location.hostname||n!==t.port,this.xs=t.secure!==r}}function i(t){this.method=t.method||"GET",this.uri=t.uri,this.xd=!!t.xd,this.xs=!!t.xs,this.async=!1!==t.async,this.data=void 0!==t.data?t.data:null,this.agent=t.agent,this.isBinary=t.isBinary,this.supportsBinary=t.supportsBinary,this.enablesXDR=t.enablesXDR,this.requestTimeout=t.requestTimeout,this.pfx=t.pfx,this.key=t.key,this.passphrase=t.passphrase,this.cert=t.cert,this.ca=t.ca,this.ciphers=t.ciphers,this.rejectUnauthorized=t.rejectUnauthorized,this.extraHeaders=t.extraHeaders,this.create()}function s(){for(var t in i.requests)i.requests.hasOwnProperty(t)&&i.requests[t].abort()}var a=r(13),c=r(16),h=r(5),p=r(28);r(3)("engine.io-client:polling-xhr");t.exports=o,t.exports.Request=i,p(o,c),o.prototype.supportsBinary=!0,o.prototype.request=function(t){return t=t||{},t.uri=this.uri(),t.xd=this.xd,t.xs=this.xs,t.agent=this.agent||!1,t.supportsBinary=this.supportsBinary,t.enablesXDR=this.enablesXDR,t.pfx=this.pfx,t.key=this.key,t.passphrase=this.passphrase,t.cert=this.cert,t.ca=this.ca,t.ciphers=this.ciphers,t.rejectUnauthorized=this.rejectUnauthorized,t.requestTimeout=this.requestTimeout,t.extraHeaders=this.extraHeaders,new i(t)},o.prototype.doWrite=function(t,e){var r="string"!=typeof t&&void 0!==t,n=this.request({method:"POST",data:t,isBinary:r}),o=this;n.on("success",e),n.on("error",function(t){o.onError("xhr post error",t)}),this.sendXhr=n},o.prototype.doPoll=function(){var t=this.request(),e=this;t.on("data",function(t){e.onData(t)}),t.on("error",function(t){e.onError("xhr poll error",t)}),this.pollXhr=t},h(i.prototype),i.prototype.create=function(){var t={agent:this.agent,xdomain:this.xd,xscheme:this.xs,enablesXDR:this.enablesXDR};t.pfx=this.pfx,t.key=this.key,t.passphrase=this.passphrase,t.cert=this.cert,t.ca=this.ca,t.ciphers=this.ciphers,t.rejectUnauthorized=this.rejectUnauthorized;var r=this.xhr=new a(t),n=this;try{r.open(this.method,this.uri,this.async);try{if(this.extraHeaders){r.setDisableHeaderCheck&&r.setDisableHeaderCheck(!0);for(var o in this.extraHeaders)this.extraHeaders.hasOwnProperty(o)&&r.setRequestHeader(o,this.extraHeaders[o])}}catch(t){}if("POST"===this.method)try{this.isBinary?r.setRequestHeader("Content-type","application/octet-stream"):r.setRequestHeader("Content-type","text/plain;charset=UTF-8")}catch(t){}try{r.setRequestHeader("Accept","*/*")}catch(t){}"withCredentials"in r&&(r.withCredentials=!0),this.requestTimeout&&(r.timeout=this.requestTimeout),this.hasXDR()?(r.onload=function(){n.onLoad()},r.onerror=function(){n.onError(r.responseText)}):r.onreadystatechange=function(){if(2===r.readyState)try{var t=r.getResponseHeader("Content-Type");n.supportsBinary&&"application/octet-stream"===t&&(r.responseType="arraybuffer")}catch(t){}4===r.readyState&&(200===r.status||1223===r.status?n.onLoad():setTimeout(function(){n.onError(r.status)},0))},r.send(this.data)}catch(t){return void setTimeout(function(){n.onError(t)},0)}e.document&&(this.index=i.requestsCount++,i.requests[this.index]=this)},i.prototype.onSuccess=function(){this.emit("success"),this.cleanup()},i.prototype.onData=function(t){this.emit("data",t),this.onSuccess()},i.prototype.onError=function(t){this.emit("error",t),this.cleanup(!0)},i.prototype.cleanup=function(t){if("undefined"!=typeof this.xhr&&null!==this.xhr){if(this.hasXDR()?this.xhr.onload=this.xhr.onerror=n:this.xhr.onreadystatechange=n,t)try{this.xhr.abort()}catch(t){}e.document&&delete i.requests[this.index],this.xhr=null}},i.prototype.onLoad=function(){var t;try{var e;try{e=this.xhr.getResponseHeader("Content-Type")}catch(t){}t="application/octet-stream"===e?this.xhr.response||this.xhr.responseText:this.xhr.responseText}catch(t){this.onError(t)}null!=t&&this.onData(t)},i.prototype.hasXDR=function(){return"undefined"!=typeof e.XDomainRequest&&!this.xs&&this.enablesXDR},i.prototype.abort=function(){this.cleanup()},i.requestsCount=0,i.requests={},e.document&&(e.attachEvent?e.attachEvent("onunload",s):e.addEventListener&&e.addEventListener("beforeunload",s,!1))}).call(e,function(){return this}())},function(t,e,r){function n(t){var e=t&&t.forceBase64;h&&!e||(this.supportsBinary=!1),o.call(this,t)}var o=r(17),i=r(27),s=r(18),a=r(28),c=r(29);r(3)("engine.io-client:polling");t.exports=n;var h=function(){var t=r(13),e=new t({xdomain:!1});return null!=e.responseType}();a(n,o),n.prototype.name="polling",n.prototype.doOpen=function(){this.poll()},n.prototype.pause=function(t){function e(){r.readyState="paused",t()}var r=this;if(this.readyState="pausing",this.polling||!this.writable){var n=0;this.polling&&(n++,this.once("pollComplete",function(){--n||e()})),this.writable||(n++,this.once("drain",function(){--n||e()}))}else e()},n.prototype.poll=function(){this.polling=!0,this.doPoll(),this.emit("poll")},n.prototype.onData=function(t){var e=this,r=function(t,r,n){return"opening"===e.readyState&&e.onOpen(),"close"===t.type?(e.onClose(),!1):void e.onPacket(t)};s.decodePayload(t,this.socket.binaryType,r),"closed"!==this.readyState&&(this.polling=!1,this.emit("pollComplete"),"open"===this.readyState&&this.poll())},n.prototype.doClose=function(){function t(){e.write([{type:"close"}])}var e=this;"open"===this.readyState?t():this.once("open",t)},n.prototype.write=function(t){var e=this;this.writable=!1;var r=function(){e.writable=!0,e.emit("drain")};s.encodePayload(t,this.supportsBinary,function(t){e.doWrite(t,r)})},n.prototype.uri=function(){var t=this.query||{},e=this.secure?"https":"http",r="";!1!==this.timestampRequests&&(t[this.timestampParam]=c()),this.supportsBinary||t.sid||(t.b64=1),t=i.encode(t),this.port&&("https"===e&&443!==Number(this.port)||"http"===e&&80!==Number(this.port))&&(r=":"+this.port),t.length&&(t="?"+t);var n=this.hostname.indexOf(":")!==-1;return e+"://"+(n?"["+this.hostname+"]":this.hostname)+r+this.path+t}},function(t,e,r){function n(t){this.path=t.path,this.hostname=t.hostname,this.port=t.port,this.secure=t.secure,this.query=t.query,this.timestampParam=t.timestampParam,this.timestampRequests=t.timestampRequests,this.readyState="",this.agent=t.agent||!1,this.socket=t.socket,this.enablesXDR=t.enablesXDR,this.pfx=t.pfx,this.key=t.key,this.passphrase=t.passphrase,this.cert=t.cert,this.ca=t.ca,this.ciphers=t.ciphers,this.rejectUnauthorized=t.rejectUnauthorized,this.forceNode=t.forceNode,this.extraHeaders=t.extraHeaders,this.localAddress=t.localAddress}var o=r(18),i=r(5);t.exports=n,i(n.prototype),n.prototype.onError=function(t,e){var r=new Error(t);return r.type="TransportError",r.description=e,this.emit("error",r),this},n.prototype.open=function(){return"closed"!==this.readyState&&""!==this.readyState||(this.readyState="opening",this.doOpen()),this},n.prototype.close=function(){return"opening"!==this.readyState&&"open"!==this.readyState||(this.doClose(),this.onClose()),this},n.prototype.send=function(t){if("open"!==this.readyState)throw new Error("Transport not open");this.write(t)},n.prototype.onOpen=function(){this.readyState="open",this.writable=!0,this.emit("open")},n.prototype.onData=function(t){var e=o.decodePacket(t,this.socket.binaryType);this.onPacket(e)},n.prototype.onPacket=function(t){this.emit("packet",t)},n.prototype.onClose=function(){this.readyState="closed",this.emit("close")}},function(t,e,r){(function(t){function n(t,r){var n="b"+e.packets[t.type]+t.data.data;return r(n)}function o(t,r,n){if(!r)return e.encodeBase64Packet(t,n);
    7. 

  7. var o=t.data,i=new Uint8Array(o),s=new Uint8Array(1+o.byteLength);s[0]=v[t.type];for(var a=0;a<i.length;a++)s[a+1]=i[a];return n(s.buffer)}function i(t,r,n){if(!r)return e.encodeBase64Packet(t,n);var o=new FileReader;return o.onload=function(){t.data=o.result,e.encodePacket(t,r,!0,n)},o.readAsArrayBuffer(t.data)}function s(t,r,n){if(!r)return e.encodeBase64Packet(t,n);if(g)return i(t,r,n);var o=new Uint8Array(1);o[0]=v[t.type];var s=new w([o.buffer,t.data]);return n(s)}function a(t){try{t=d.decode(t,{strict:!1})}catch(t){return!1}return t}function c(t,e,r){for(var n=new Array(t.length),o=l(t.length,r),i=function(t,r,o){e(r,function(e,r){n[t]=r,o(e,n)})},s=0;s<t.length;s++)i(s,t[s],o)}var h,p=r(19),u=r(20),f=r(21),l=r(22),d=r(23);t&&t.ArrayBuffer&&(h=r(25));var y="undefined"!=typeof navigator&&/Android/i.test(navigator.userAgent),m="undefined"!=typeof navigator&&/PhantomJS/i.test(navigator.userAgent),g=y||m;e.protocol=3;var v=e.packets={open:0,close:1,ping:2,pong:3,message:4,upgrade:5,noop:6},b=p(v),k={type:"error",data:"parser error"},w=r(26);e.encodePacket=function(e,r,i,a){"function"==typeof r&&(a=r,r=!1),"function"==typeof i&&(a=i,i=null);var c=void 0===e.data?void 0:e.data.buffer||e.data;if(t.ArrayBuffer&&c instanceof ArrayBuffer)return o(e,r,a);if(w&&c instanceof t.Blob)return s(e,r,a);if(c&&c.base64)return n(e,a);var h=v[e.type];return void 0!==e.data&&(h+=i?d.encode(String(e.data),{strict:!1}):String(e.data)),a(""+h)},e.encodeBase64Packet=function(r,n){var o="b"+e.packets[r.type];if(w&&r.data instanceof t.Blob){var i=new FileReader;return i.onload=function(){var t=i.result.split(",")[1];n(o+t)},i.readAsDataURL(r.data)}var s;try{s=String.fromCharCode.apply(null,new Uint8Array(r.data))}catch(t){for(var a=new Uint8Array(r.data),c=new Array(a.length),h=0;h<a.length;h++)c[h]=a[h];s=String.fromCharCode.apply(null,c)}return o+=t.btoa(s),n(o)},e.decodePacket=function(t,r,n){if(void 0===t)return k;if("string"==typeof t){if("b"===t.charAt(0))return e.decodeBase64Packet(t.substr(1),r);if(n&&(t=a(t),t===!1))return k;var o=t.charAt(0);return Number(o)==o&&b[o]?t.length>1?{type:b[o],data:t.substring(1)}:{type:b[o]}:k}var i=new Uint8Array(t),o=i[0],s=f(t,1);return w&&"blob"===r&&(s=new w([s])),{type:b[o],data:s}},e.decodeBase64Packet=function(t,e){var r=b[t.charAt(0)];if(!h)return{type:r,data:{base64:!0,data:t.substr(1)}};var n=h.decode(t.substr(1));return"blob"===e&&w&&(n=new w([n])),{type:r,data:n}},e.encodePayload=function(t,r,n){function o(t){return t.length+":"+t}function i(t,n){e.encodePacket(t,!!s&&r,!1,function(t){n(null,o(t))})}"function"==typeof r&&(n=r,r=null);var s=u(t);return r&&s?w&&!g?e.encodePayloadAsBlob(t,n):e.encodePayloadAsArrayBuffer(t,n):t.length?void c(t,i,function(t,e){return n(e.join(""))}):n("0:")},e.decodePayload=function(t,r,n){if("string"!=typeof t)return e.decodePayloadAsBinary(t,r,n);"function"==typeof r&&(n=r,r=null);var o;if(""===t)return n(k,0,1);for(var i,s,a="",c=0,h=t.length;c<h;c++){var p=t.charAt(c);if(":"===p){if(""===a||a!=(i=Number(a)))return n(k,0,1);if(s=t.substr(c+1,i),a!=s.length)return n(k,0,1);if(s.length){if(o=e.decodePacket(s,r,!1),k.type===o.type&&k.data===o.data)return n(k,0,1);var u=n(o,c+i,h);if(!1===u)return}c+=i,a=""}else a+=p}return""!==a?n(k,0,1):void 0},e.encodePayloadAsArrayBuffer=function(t,r){function n(t,r){e.encodePacket(t,!0,!0,function(t){return r(null,t)})}return t.length?void c(t,n,function(t,e){var n=e.reduce(function(t,e){var r;return r="string"==typeof e?e.length:e.byteLength,t+r.toString().length+r+2},0),o=new Uint8Array(n),i=0;return e.forEach(function(t){var e="string"==typeof t,r=t;if(e){for(var n=new Uint8Array(t.length),s=0;s<t.length;s++)n[s]=t.charCodeAt(s);r=n.buffer}e?o[i++]=0:o[i++]=1;for(var a=r.byteLength.toString(),s=0;s<a.length;s++)o[i++]=parseInt(a[s]);o[i++]=255;for(var n=new Uint8Array(r),s=0;s<n.length;s++)o[i++]=n[s]}),r(o.buffer)}):r(new 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l=i.length;i.forEach(function(t,o){n(e.decodePacket(t,r,!0),o,l)})}}).call(e,function(){return this}())},function(t,e){t.exports=Object.keys||function(t){var e=[],r=Object.prototype.hasOwnProperty;for(var n in t)r.call(t,n)&&e.push(n);return e}},function(t,e,r){(function(e){function n(t){if(!t||"object"!=typeof t)return!1;if(o(t)){for(var r=0,i=t.length;r<i;r++)if(n(t[r]))return!0;return!1}if("function"==typeof e.Buffer&&e.Buffer.isBuffer&&e.Buffer.isBuffer(t)||"function"==typeof e.ArrayBuffer&&t instanceof ArrayBuffer||s&&t instanceof Blob||a&&t instanceof File)return!0;if(t.toJSON&&"function"==typeof t.toJSON&&1===arguments.length)return n(t.toJSON(),!0);for(var c in t)if(Object.prototype.hasOwnProperty.call(t,c)&&n(t[c]))return!0;return!1}var o=r(7),i=Object.prototype.toString,s="function"==typeof e.Blob||"[object BlobConstructor]"===i.call(e.Blob),a="function"==typeof e.File||"[object FileConstructor]"===i.call(e.File);t.exports=n}).call(e,function(){return 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t=this,e=document.createElement("script");this.script&&(this.script.parentNode.removeChild(this.script),this.script=null),e.async=!0,e.src=this.uri(),e.onerror=function(e){t.onError("jsonp poll error",e)};var r=document.getElementsByTagName("script")[0];r?r.parentNode.insertBefore(e,r):(document.head||document.body).appendChild(e),this.script=e;var n="undefined"!=typeof navigator&&/gecko/i.test(navigator.userAgent);n&&setTimeout(function(){var t=document.createElement("iframe");document.body.appendChild(t),document.body.removeChild(t)},100)},o.prototype.doWrite=function(t,e){function r(){n(),e()}function n(){if(o.iframe)try{o.form.removeChild(o.iframe)}catch(t){o.onError("jsonp polling iframe removal error",t)}try{var t='<iframe src="javascript:0" name="'+o.iframeId+'">';i=document.createElement(t)}catch(t){i=document.createElement("iframe"),i.name=o.iframeId,i.src="javascript:0"}i.id=o.iframeId,o.form.appendChild(i),o.iframe=i}var o=this;if(!this.form){var i,s=document.createElement("form"),a=document.createElement("textarea"),p=this.iframeId="eio_iframe_"+this.index;s.className="socketio",s.style.position="absolute",s.style.top="-1000px",s.style.left="-1000px",s.target=p,s.method="POST",s.setAttribute("accept-charset","utf-8"),a.name="d",s.appendChild(a),document.body.appendChild(s),this.form=s,this.area=a}this.form.action=this.uri(),n(),t=t.replace(h,"\\\n"),this.area.value=t.replace(c,"\\n");try{this.form.submit()}catch(t){}this.iframe.attachEvent?this.iframe.onreadystatechange=function(){"complete"===o.iframe.readyState&&r()}:this.iframe.onload=r}}).call(e,function(){return this}())},function(t,e,r){(function(e){function n(t){var e=t&&t.forceBase64;e&&(this.supportsBinary=!1),this.perMessageDeflate=t.perMessageDeflate,this.usingBrowserWebSocket=p&&!t.forceNode,this.protocols=t.protocols,this.usingBrowserWebSocket||(u=o),i.call(this,t)}var o,i=r(17),s=r(18),a=r(27),c=r(28),h=r(29),p=(r(3)("engine.io-client:websocket"),e.WebSocket||e.MozWebSocket);if("undefined"==typeof window)try{o=r(32)}catch(t){}var u=p;u||"undefined"!=typeof window||(u=o),t.exports=n,c(n,i),n.prototype.name="websocket",n.prototype.supportsBinary=!0,n.prototype.doOpen=function(){if(this.check()){var t=this.uri(),e=this.protocols,r={agent:this.agent,perMessageDeflate:this.perMessageDeflate};r.pfx=this.pfx,r.key=this.key,r.passphrase=this.passphrase,r.cert=this.cert,r.ca=this.ca,r.ciphers=this.ciphers,r.rejectUnauthorized=this.rejectUnauthorized,this.extraHeaders&&(r.headers=this.extraHeaders),this.localAddress&&(r.localAddress=this.localAddress);try{this.ws=this.usingBrowserWebSocket?e?new u(t,e):new u(t):new u(t,e,r)}catch(t){return this.emit("error",t)}void 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t=this.io;this.subs=[c(t,"open",h(this,"onopen")),c(t,"packet",h(this,"onpacket")),c(t,"close",h(this,"onclose"))]}},n.prototype.open=n.prototype.connect=function(){return this.connected?this:(this.subEvents(),this.io.open(),"open"===this.io.readyState&&this.onopen(),this.emit("connecting"),this)},n.prototype.send=function(){var t=a(arguments);return t.unshift("message"),this.emit.apply(this,t),this},n.prototype.emit=function(t){if(f.hasOwnProperty(t))return l.apply(this,arguments),this;var e=a(arguments),r={type:(void 0!==this.flags.binary?this.flags.binary:u(e))?i.BINARY_EVENT:i.EVENT,data:e};return r.options={},r.options.compress=!this.flags||!1!==this.flags.compress,"function"==typeof e[e.length-1]&&(this.acks[this.ids]=e.pop(),r.id=this.ids++),this.connected?this.packet(r):this.sendBuffer.push(r),this.flags={},this},n.prototype.packet=function(t){t.nsp=this.nsp,this.io.packet(t)},n.prototype.onopen=function(){if("/"!==this.nsp)if(this.query){var t="object"===o(this.query)?p.encode(this.query):this.query;this.packet({type:i.CONNECT,query:t})}else this.packet({type:i.CONNECT})},n.prototype.onclose=function(t){this.connected=!1,this.disconnected=!0,delete this.id,this.emit("disconnect",t)},n.prototype.onpacket=function(t){var e=t.nsp===this.nsp,r=t.type===i.ERROR&&"/"===t.nsp;if(e||r)switch(t.type){case i.CONNECT:this.onconnect();break;case i.EVENT:this.onevent(t);break;case i.BINARY_EVENT:this.onevent(t);break;case i.ACK:this.onack(t);break;case i.BINARY_ACK:this.onack(t);break;case i.DISCONNECT:this.ondisconnect();break;case i.ERROR:this.emit("error",t.data)}},n.prototype.onevent=function(t){var e=t.data||[];null!=t.id&&e.push(this.ack(t.id)),this.connected?l.apply(this,e):this.receiveBuffer.push(e)},n.prototype.ack=function(t){var e=this,r=!1;return function(){if(!r){r=!0;var n=a(arguments);e.packet({type:u(n)?i.BINARY_ACK:i.ACK,id:t,data:n})}}},n.prototype.onack=function(t){var e=this.acks[t.id];"function"==typeof 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n=e||0;n<t.length;n++)r[n-e]=t[n];return r}t.exports=r},function(t,e){"use strict";function r(t,e,r){return t.on(e,r),{destroy:function(){t.removeListener(e,r)}}}t.exports=r},function(t,e){var r=[].slice;t.exports=function(t,e){if("string"==typeof e&&(e=t[e]),"function"!=typeof e)throw new Error("bind() requires a function");var n=r.call(arguments,2);return function(){return e.apply(t,n.concat(r.call(arguments)))}}},function(t,e){function r(t){t=t||{},this.ms=t.min||100,this.max=t.max||1e4,this.factor=t.factor||2,this.jitter=t.jitter>0&&t.jitter<=1?t.jitter:0,this.attempts=0}t.exports=r,r.prototype.duration=function(){var t=this.ms*Math.pow(this.factor,this.attempts++);if(this.jitter){var e=Math.random(),r=Math.floor(e*this.jitter*t);t=0==(1&Math.floor(10*e))?t-r:t+r}return 0|Math.min(t,this.max)},r.prototype.reset=function(){this.attempts=0},r.prototype.setMin=function(t){this.ms=t},r.prototype.setMax=function(t){this.max=t},r.prototype.setJitter=function(t){this.jitter=t}}])});
    8. 

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