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socket.io.slim.js

socket.io.slim.js 53 KB
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  1. /*!
    2. 

  2.  * Socket.IO v2.5.0
    3. 

  3.  * (c) 2014-2021 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,p=n.id,h=n.path,u=c[p]&&h in c[p].nsps,f=e.forceNew||e["force new connection"]||!1===e.multiplex||u;return f?r=a(s,e):(c[p]||(c[p]=a(s,e)),r=c[p]),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){"use strict";function n(t,e){var r=t;e=e||"undefined"!=typeof location&&location,null==t&&(t=e.protocol+"//"+e.host),"string"==typeof t&&("/"===t.charAt(0)&&(t="/"===t.charAt(1)?e.protocol+t:e.host+t),/^(https?|wss?):\/\//.test(t)||(t="undefined"!=typeof e?e.protocol+"//"+t:"https://"+t),r=o(t)),r.port||(/^(http|ws)$/.test(r.protocol)?r.port="80":/^(http|ws)s$/.test(r.protocol)&&(r.port="443")),r.path=r.path||"/";var n=r.host.indexOf(":")!==-1,i=n?"["+r.host+"]":r.host;return r.id=r.protocol+"://"+i+":"+r.port,r.href=r.protocol+"://"+i+(e&&e.port===r.port?"":":"+r.port),r}var o=r(2);r(3)("socket.io-client:url");t.exports=n},function(t,e){function r(t,e){var r=/\/{2,9}/g,n=e.replace(r,"/").split("/");return"/"!=e.substr(0,1)&&0!==e.length||n.splice(0,1),"/"==e.substr(e.length-1,1)&&n.splice(n.length-1,1),n}function n(t,e){var r={};return e.replace(/(?:^|&)([^&=]*)=?([^&]*)/g,function(t,e,n){e&&(r[e]=n)}),r}var o=/^(?:(?![^:@]+:[^:@\/]*@)(http|https|ws|wss):\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/,i=["source","protocol","authority","userInfo","user","password","host","port","relative","path","directory","file","query","anchor"];t.exports=function(t){var e=t,s=t.indexOf("["),a=t.indexOf("]");s!=-1&&a!=-1&&(t=t.substring(0,s)+t.substring(s,a).replace(/:/g,";")+t.substring(a,t.length));for(var c=o.exec(t||""),p={},h=14;h--;)p[i[h]]=c[h]||"";return s!=-1&&a!=-1&&(p.source=e,p.host=p.host.substring(1,p.host.length-1).replace(/;/g,":"),p.authority=p.authority.replace("[","").replace("]","").replace(/;/g,":"),p.ipv6uri=!0),p.pathNames=r(p,p.path),p.queryKey=n(p,p.query),p}},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=p(t.substr(r)),c=a!==!1&&(n.type===e.ERROR||d(a));if(!c)return u("invalid payload");n.data=a}return n}function p(t){try{return JSON.parse(t)}catch(t){return!1}}function h(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 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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,h){if(!t)return t;if(c&&t instanceof Blob||p&&t instanceof File){n++;var u=new FileReader;u.onload=function(){h?h[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)}},function(t,e){var r={}.toString;t.exports=Array.isArray||function(t){return"[object Array]"==r.call(t)}},function(t,e){function r(t){return n&&Buffer.isBuffer(t)||o&&(t instanceof ArrayBuffer||i(t))}t.exports=r;var n="function"==typeof Buffer&&"function"==typeof Buffer.isBuffer,o="function"==typeof ArrayBuffer,i=function(t){return"function"==typeof ArrayBuffer.isView?ArrayBuffer.isView(t):t.buffer instanceof ArrayBuffer}},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),p=r(36),h=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=p(r,"open",function(){n.onopen(),t&&t()}),s=p(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;0===a&&o.destroy();var 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(p(t,"data",h(this,"ondata"))),this.subs.push(p(t,"ping",h(this,"onping"))),this.subs.push(p(t,"pong",h(this,"onpong"))),this.subs.push(p(t,"error",h(this,"onerror"))),this.subs.push(p(t,"close",h(this,"onclose"))),this.subs.push(p(this.decoder,"decoded",h(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(19)},function(t,e,r){function n(t,e){return this instanceof n?(e=e||{},t&&"object"==typeof t&&(e=t,t=null),t?(t=p(t),e.hostname=t.host,e.secure="https"===t.protocol||"wss"===t.protocol,e.port=t.port,t.query&&(e.query=t.query)):e.host&&(e.hostname=p(e.host).host),this.secure=null!=e.secure?e.secure:"undefined"!=typeof location&&"https:"===location.protocol,e.hostname&&!e.port&&(e.port=this.secure?"443":"80"),this.agent=e.agent||!1,this.hostname=e.hostname||("undefined"!=typeof location?location.hostname:"localhost"),this.port=e.port||("undefined"!=typeof location&&location.port?location.port:this.secure?443:80),this.query=e.query||{},"string"==typeof this.query&&(this.query=h.decode(this.query)),this.upgrade=!1!==e.upgrade,this.path=(e.path||"/engine.io").replace(/\/$/,"")+"/",this.forceJSONP=!!e.forceJSONP,this.jsonp=!1!==e.jsonp,this.forceBase64=!!e.forceBase64,this.enablesXDR=!!e.enablesXDR,this.withCredentials=!1!==e.withCredentials,this.timestampParam=e.timestampParam||"t",this.timestampRequests=e.timestampRequests,this.transports=e.transports||["polling","websocket"],this.transportOptions=e.transportOptions||{},this.readyState="",this.writeBuffer=[],this.prevBufferLen=0,this.policyPort=e.policyPort||843,this.rememberUpgrade=e.rememberUpgrade||!1,this.binaryType=null,this.onlyBinaryUpgrades=e.onlyBinaryUpgrades,this.perMessageDeflate=!1!==e.perMessageDeflate&&(e.perMessageDeflate||{}),!0===this.perMessageDeflate&&(this.perMessageDeflate={}),this.perMessageDeflate&&null==this.perMessageDeflate.threshold&&(this.perMessageDeflate.threshold=1024),this.pfx=e.pfx||null,this.key=e.key||null,this.passphrase=e.passphrase||null,this.cert=e.cert||null,this.ca=e.ca||null,this.ciphers=e.ciphers||null,this.rejectUnauthorized=void 0===e.rejectUnauthorized||e.rejectUnauthorized,this.forceNode=!!e.forceNode,this.isReactNative="undefined"!=typeof navigator&&"string"==typeof navigator.product&&"reactnative"===navigator.product.toLowerCase(),("undefined"==typeof self||this.isReactNative)&&(e.extraHeaders&&Object.keys(e.extraHeaders).length>0&&(this.extraHeaders=e.extraHeaders),e.localAddress&&(this.localAddress=e.localAddress)),this.id=null,this.upgrades=null,this.pingInterval=null,this.pingTimeout=null,this.pingIntervalTimer=null,this.pingTimeoutTimer=null,void this.open()):new n(t,e)}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(19),p=r(2),h=r(27);t.exports=n,n.priorWebsocketSuccess=!1,s(n.prototype),n.protocol=c.protocol,n.Socket=n,n.Transport=r(18),n.transports=r(12),n.parser=r(19),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,withCredentials:r.withCredentials||this.withCredentials,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,isReactNative:this.isReactNative});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;h=h||t}h||(p.send([{type:"ping",data:"probe"}]),p.once("packet",function(t){if(!h)if("pong"===t.type&&"probe"===t.data){if(u.upgrading=!0,u.emit("upgrading",p),!p)return;n.priorWebsocketSuccess="websocket"===p.name,u.transport.pause(function(){h||"closed"!==u.readyState&&(c(),u.setTransport(p),p.send([{type:"upgrade"}]),u.emit("upgrade",p),p=null,u.upgrading=!1,u.flush())})}else{var e=new Error("probe error");e.transport=p.name,u.emit("upgradeError",e)}}))}function r(){h||(h=!0,c(),p.close(),p=null)}function o(t){var e=new Error("probe error: "+t);e.transport=p.name,r(),u.emit("upgradeError",e)}function i(){o("transport closed")}function s(){o("socket closed")}function a(t){p&&t.name!==p.name&&r()}function c(){p.removeListener("open",e),p.removeListener("error",o),p.removeListener("close",i),u.removeListener("close",s),u.removeListener("upgrading",a)}var p=this.createTransport(t,{probe:1}),h=!1,u=this;n.priorWebsocketSuccess=!1,p.once("open",e),p.once("error",o),p.once("close",i),this.once("close",s),this.once("upgrading",a),p.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}},function(t,e,r){function n(t){var e,r=!1,n=!1,a=!1!==t.jsonp;if("undefined"!=typeof location){var c="https:"===location.protocol,p=location.port;p||(p=c?443:80),r=t.hostname!==location.hostname||p!==t.port,n=t.secure!==c}if(t.xdomain=r,t.xscheme=n,e=new o(t),"open"in e&&!t.forceJSONP)return new i(t);if(!a)throw new Error("JSONP disabled");return new s(t)}var o=r(13),i=r(16),s=r(30),a=r(31);e.polling=n,e.websocket=a},function(t,e,r){var n=r(14),o=r(15);t.exports=function(t){var e=t.xdomain,r=t.xscheme,i=t.enablesXDR;try{if("undefined"!=typeof XMLHttpRequest&&(!e||n))return new XMLHttpRequest}catch(t){}try{if("undefined"!=typeof XDomainRequest&&!r&&i)return new XDomainRequest}catch(t){}if(!e)try{return new(o[["Active"].concat("Object").join("X")])("Microsoft.XMLHTTP")}catch(t){}}},function(t,e){try{t.exports="undefined"!=typeof XMLHttpRequest&&"withCredentials"in new XMLHttpRequest}catch(e){t.exports=!1}},function(t,e){t.exports=function(){return"undefined"!=typeof self?self:"undefined"!=typeof window?window:Function("return this")()}()},function(t,e,r){function n(){}function o(t){if(c.call(this,t),this.requestTimeout=t.requestTimeout,this.extraHeaders=t.extraHeaders,"undefined"!=typeof location){var e="https:"===location.protocol,r=location.port;r||(r=e?443:80),this.xd="undefined"!=typeof location&&t.hostname!==location.hostname||r!==t.port,this.xs=t.secure!==e}}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.withCredentials=t.withCredentials,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(17),p=r(5),h=r(28),u=(r(3)("engine.io-client:polling-xhr"),r(15));if(t.exports=o,t.exports.Request=i,h(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.withCredentials=this.withCredentials,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},p(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 e=this.xhr=new a(t),r=this;try{e.open(this.method,this.uri,this.async);try{if(this.extraHeaders){e.setDisableHeaderCheck&&e.setDisableHeaderCheck(!0);for(var n in this.extraHeaders)this.extraHeaders.hasOwnProperty(n)&&e.setRequestHeader(n,this.extraHeaders[n])}}catch(t){}if("POST"===this.method)try{this.isBinary?e.setRequestHeader("Content-type","application/octet-stream"):e.setRequestHeader("Content-type","text/plain;charset=UTF-8")}catch(t){}try{e.setRequestHeader("Accept","*/*")}catch(t){}"withCredentials"in e&&(e.withCredentials=this.withCredentials),this.requestTimeout&&(e.timeout=this.requestTimeout),this.hasXDR()?(e.onload=function(){r.onLoad()},e.onerror=function(){r.onError(e.responseText)}):e.onreadystatechange=function(){if(2===e.readyState)try{var t=e.getResponseHeader("Content-Type");(r.supportsBinary&&"application/octet-stream"===t||"application/octet-stream; charset=UTF-8"===t)&&(e.responseType="arraybuffer")}catch(t){}4===e.readyState&&(200===e.status||1223===e.status?r.onLoad():setTimeout(function(){r.onError("number"==typeof e.status?e.status:0)},0))},e.send(this.data)}catch(t){return void setTimeout(function(){r.onError(t)},0)}"undefined"!=typeof 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){}"undefined"!=typeof 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||"application/octet-stream; charset=UTF-8"===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 XDomainRequest&&!this.xs&&this.enablesXDR},i.prototype.abort=function(){this.cleanup()},i.requestsCount=0,i.requests={},"undefined"!=typeof document)if("function"==typeof attachEvent)attachEvent("onunload",s);else if("function"==typeof addEventListener){var f="onpagehide"in u?"pagehide":"unload";addEventListener(f,s,!1)}},function(t,e,r){function n(t){var e=t&&t.forceBase64;p&&!e||(this.supportsBinary=!1),o.call(this,t)}var o=r(18),i=r(27),s=r(19),a=r(28),c=r(29);r(3)("engine.io-client:polling");t.exports=n;var p=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&&"open"===t.type&&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.withCredentials=t.withCredentials,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,
    7. 

  7. this.isReactNative=t.isReactNative,this.extraHeaders=t.extraHeaders,this.localAddress=t.localAddress}var o=r(19),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 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);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(){e.encodePacket({type:t.type,data:o.result},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 p,h=r(20),u=r(21),f=r(22),l=r(23),d=r(24);"undefined"!=typeof ArrayBuffer&&(p=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=h(v),k={type:"error",data:"parser error"},w=r(26);e.encodePacket=function(t,e,r,i){"function"==typeof e&&(i=e,e=!1),"function"==typeof r&&(i=r,r=null);var a=void 0===t.data?void 0:t.data.buffer||t.data;if("undefined"!=typeof ArrayBuffer&&a instanceof ArrayBuffer)return o(t,e,i);if("undefined"!=typeof w&&a instanceof w)return s(t,e,i);if(a&&a.base64)return n(t,i);var c=v[t.type];return void 0!==t.data&&(c+=r?d.encode(String(t.data),{strict:!1}):String(t.data)),i(""+c)},e.encodeBase64Packet=function(t,r){var n="b"+e.packets[t.type];if("undefined"!=typeof w&&t.data instanceof w){var o=new FileReader;return o.onload=function(){var t=o.result.split(",")[1];r(n+t)},o.readAsDataURL(t.data)}var i;try{i=String.fromCharCode.apply(null,new Uint8Array(t.data))}catch(e){for(var s=new Uint8Array(t.data),a=new Array(s.length),c=0;c<s.length;c++)a[c]=s[c];i=String.fromCharCode.apply(null,a)}return n+=btoa(i),r(n)},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(!p)return{type:r,data:{base64:!0,data:t.substr(1)}};var n=p.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,p=t.length;c<p;c++){var h=t.charAt(c);if(":"===h){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,p);if(!1===u)return}c+=i,a=""}else a+=h}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 ArrayBuffer(0))},e.encodePayloadAsBlob=function(t,r){function n(t,r){e.encodePacket(t,!0,!0,function(t){var e=new Uint8Array(1);if(e[0]=1,"string"==typeof t){for(var n=new Uint8Array(t.length),o=0;o<t.length;o++)n[o]=t.charCodeAt(o);t=n.buffer,e[0]=0}for(var i=t instanceof ArrayBuffer?t.byteLength:t.size,s=i.toString(),a=new Uint8Array(s.length+1),o=0;o<s.length;o++)a[o]=parseInt(s[o]);if(a[s.length]=255,w){var c=new w([e.buffer,a.buffer,t]);r(null,c)}})}c(t,n,function(t,e){return r(new w(e))})},e.decodePayloadAsBinary=function(t,r,n){"function"==typeof r&&(n=r,r=null);for(var o=t,i=[];o.byteLength>0;){for(var s=new Uint8Array(o),a=0===s[0],c="",p=1;255!==s[p];p++){if(c.length>310)return n(k,0,1);c+=s[p]}o=f(o,2+c.length),c=parseInt(c);var h=f(o,0,c);if(a)try{h=String.fromCharCode.apply(null,new Uint8Array(h))}catch(t){var u=new 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FileConstructor]"===i.call(File);t.exports=n},function(t,e){t.exports=function(t,e,r){var n=t.byteLength;if(e=e||0,r=r||n,t.slice)return t.slice(e,r);if(e<0&&(e+=n),r<0&&(r+=n),r>n&&(r=n),e>=n||e>=r||0===n)return new ArrayBuffer(0);for(var o=new Uint8Array(t),i=new Uint8Array(r-e),s=e,a=0;s<r;s++,a++)i[a]=o[s];return i.buffer}},function(t,e){function r(t,e,r){function o(t,n){if(o.count<=0)throw new Error("after called too many times");--o.count,t?(i=!0,e(t),e=r):0!==o.count||i||e(null,n)}var i=!1;return r=r||n,o.count=t,0===t?e():o}function n(){}t.exports=r},function(t,e){function r(t){for(var e,r,n=[],o=0,i=t.length;o<i;)e=t.charCodeAt(o++),e>=55296&&e<=56319&&o<i?(r=t.charCodeAt(o++),56320==(64512&r)?n.push(((1023&e)<<10)+(1023&r)+65536):(n.push(e),o--)):n.push(e);return n}function n(t){for(var e,r=t.length,n=-1,o="";++n<r;)e=t[n],e>65535&&(e-=65536,o+=d(e>>>10&1023|55296),e=56320|1023&e),o+=d(e);return o}function o(t,e){if(t>=55296&&t<=57343){if(e)throw Error("Lone surrogate 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    8. 

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e={},r=t.split("&"),n=0,o=r.length;n<o;n++){var i=r[n].split("=");e[decodeURIComponent(i[0])]=decodeURIComponent(i[1])}return e}},function(t,e){t.exports=function(t,e){var r=function(){};r.prototype=e.prototype,t.prototype=new r,t.prototype.constructor=t}},function(t,e){"use strict";function r(t){var e="";do e=s[t%a]+e,t=Math.floor(t/a);while(t>0);return e}function n(t){var e=0;for(h=0;h<t.length;h++)e=e*a+c[t.charAt(h)];return e}function o(){var t=r(+new Date);return t!==i?(p=0,i=t):t+"."+r(p++)}for(var i,s="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_".split(""),a=64,c={},p=0,h=0;h<a;h++)c[s[h]]=h;o.encode=r,o.decode=n,t.exports=o},function(t,e,r){function n(){}function o(t){i.call(this,t),this.query=this.query||{},c||(c=a.___eio=a.___eio||[]),this.index=c.length;var e=this;c.push(function(t){e.onData(t)}),this.query.j=this.index,"function"==typeof addEventListener&&addEventListener("beforeunload",function(){e.script&&(e.script.onerror=n)},!1)}var i=r(17),s=r(28),a=r(15);t.exports=o;var c,p=/\n/g,h=/\\n/g;s(o,i),o.prototype.supportsBinary=!1,o.prototype.doClose=function(){this.script&&(this.script.parentNode.removeChild(this.script),this.script=null),this.form&&(this.form.parentNode.removeChild(this.form),this.form=null,this.iframe=null),i.prototype.doClose.call(this)},o.prototype.doPoll=function(){var 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"),c=this.iframeId="eio_iframe_"+this.index;s.className="socketio",s.style.position="absolute",s.style.top="-1000px",s.style.left="-1000px",s.target=c,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(p,"\\n");try{this.form.submit()}catch(t){}this.iframe.attachEvent?this.iframe.onreadystatechange=function(){"complete"===o.iframe.readyState&&r()}:this.iframe.onload=r}},function(t,e,r){function n(t){var e=t&&t.forceBase64;e&&(this.supportsBinary=!1),this.perMessageDeflate=t.perMessageDeflate,this.usingBrowserWebSocket=o&&!t.forceNode,this.protocols=t.protocols,this.usingBrowserWebSocket||(u=i),s.call(this,t)}var o,i,s=r(18),a=r(19),c=r(27),p=r(28),h=r(29);r(3)("engine.io-client:websocket");if("undefined"!=typeof WebSocket?o=WebSocket:"undefined"!=typeof self&&(o=self.WebSocket||self.MozWebSocket),"undefined"==typeof window)try{i=r(32)}catch(t){}var u=o||i;t.exports=n,p(n,s),n.prototype.name="websocket",n.prototype.supportsBinary=!0,n.prototype.doOpen=function(){if(this.check()){var t=this.uri(),e=this.protocols,r={};this.isReactNative||(r.agent=this.agent,r.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&&!this.isReactNative?e?new u(t,e):new u(t):new u(t,e,r)}catch(t){return this.emit("error",t)}void 0===this.ws.binaryType&&(this.supportsBinary=!1),this.ws.supports&&this.ws.supports.binary?(this.supportsBinary=!0,this.ws.binaryType="nodebuffer"):this.ws.binaryType="arraybuffer",this.addEventListeners()}},n.prototype.addEventListeners=function(){var t=this;this.ws.onopen=function(){t.onOpen()},this.ws.onclose=function(){t.onClose()},this.ws.onmessage=function(e){t.onData(e.data)},this.ws.onerror=function(e){t.onError("websocket error",e)}},n.prototype.write=function(t){function e(){r.emit("flush"),setTimeout(function(){r.writable=!0,r.emit("drain")},0)}var r=this;this.writable=!1;for(var n=t.length,o=0,i=n;o<i;o++)!function(t){a.encodePacket(t,r.supportsBinary,function(o){if(!r.usingBrowserWebSocket){var i={};if(t.options&&(i.compress=t.options.compress),r.perMessageDeflate){var s="string"==typeof o?Buffer.byteLength(o):o.length;s<r.perMessageDeflate.threshold&&(i.compress=!1)}}try{r.usingBrowserWebSocket?r.ws.send(o):r.ws.send(o,i)}catch(t){}--n||e()})}(t[o])},n.prototype.onClose=function(){s.prototype.onClose.call(this)},n.prototype.doClose=function(){"undefined"!=typeof this.ws&&this.ws.close()},n.prototype.uri=function(){var t=this.query||{},e=this.secure?"wss":"ws",r="";this.port&&("wss"===e&&443!==Number(this.port)||"ws"===e&&80!==Number(this.port))&&(r=":"+this.port),this.timestampRequests&&(t[this.timestampParam]=h()),this.supportsBinary||(t.b64=1),t=c.encode(t),t.length&&(t="?"+t);var n=this.hostname.indexOf(":")!==-1;return e+"://"+(n?"["+this.hostname+"]":this.hostname)+r+this.path+t},n.prototype.check=function(){return!(!u||"__initialize"in u&&this.name===n.prototype.name)}},function(t,e){},function(t,e){var r=[].indexOf;t.exports=function(t,e){if(r)return t.indexOf(e);for(var n=0;n<t.length;++n)if(t[n]===e)return n;return-1}},function(t,e,r){"use strict";function n(t,e,r){this.io=t,this.nsp=e,this.json=this,this.ids=0,this.acks={},this.receiveBuffer=[],this.sendBuffer=[],this.connected=!1,this.disconnected=!0,this.flags={},r&&r.query&&(this.query=r.query),this.io.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(4),s=r(5),a=r(35),c=r(36),p=r(37),h=(r(3)("socket.io-client:socket"),r(27)),u=r(21);t.exports=e=n;var f={connect:1,connect_error:1,connect_timeout:1,connecting:1,disconnect:1,error:1,reconnect:1,reconnect_attempt:1,reconnect_failed:1,reconnect_error:1,reconnecting:1,ping:1,pong:1},l=s.prototype.emit;s(n.prototype),n.prototype.subEvents=function(){if(!this.subs){var t=this.io;this.subs=[c(t,"open",p(this,"onopen")),c(t,"packet",p(this,"onpacket")),c(t,"close",p(this,"onclose"))]}},n.prototype.open=n.prototype.connect=function(){return this.connected?this:(this.subEvents(),this.io.reconnecting||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)?h.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 e&&(e.apply(this,t.data),delete this.acks[t.id])},n.prototype.onconnect=function(){this.connected=!0,this.disconnected=!1,this.emitBuffered(),this.emit("connect")},n.prototype.emitBuffered=function(){var t;for(t=0;t<this.receiveBuffer.length;t++)l.apply(this,this.receiveBuffer[t]);for(this.receiveBuffer=[],t=0;t<this.sendBuffer.length;t++)this.packet(this.sendBuffer[t]);this.sendBuffer=[]},n.prototype.ondisconnect=function(){this.destroy(),this.onclose("io server disconnect")},n.prototype.destroy=function(){if(this.subs){for(var t=0;t<this.subs.length;t++)this.subs[t].destroy();this.subs=null}this.io.destroy(this)},n.prototype.close=n.prototype.disconnect=function(){return this.connected&&this.packet({type:i.DISCONNECT}),this.destroy(),this.connected&&this.onclose("io client disconnect"),this},n.prototype.compress=function(t){return this.flags.compress=t,this},n.prototype.binary=function(t){return this.flags.binary=t,this}},function(t,e){function r(t,e){var r=[];e=e||0;for(var 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}}])});
    9. 

  9. //# sourceMappingURL=socket.io.slim.js.map
    10.