mqtt/dist/mqtt.min.js

A library for the MQTT protocol

!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{("undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this).mqtt=e()}}(function(){return function(){return function e(t,r,n){function i(s,a){if(!r[s]){if(!t[s]){var u="function"==typeof require&&require;if(!a&&u)return u(s,!0);if(o)return o(s,!0);var c=new Error("Cannot find module '"+s+"'");throw c.code="MODULE_NOT_FOUND",c}var l=r[s]={exports:{}};t[s][0].call(l.exports,function(e){return i(t[s][1][e]||e)},l,l.exports,e,t,r,n)}return r[s].exports}for(var o="function"==typeof require&&require,s=0;s<n.length;s++)i(n[s]);return i}}()({1:[function(e,t,r){(function(r,n){"use strict";var i=e("events").EventEmitter,o=e("./store"),s=e("mqtt-packet"),a=e("readable-stream").Writable,u=e("inherits"),c=e("reinterval"),l=e("./validations"),f=e("xtend"),p=e("debug")("mqttjs:client"),h=n.setImmediate||function(e){r.nextTick(e)},d={keepalive:60,reschedulePings:!0,protocolId:"MQTT",protocolVersion:4,reconnectPeriod:1e3,connectTimeout:3e4,clean:!0,resubscribe:!0},g=["ECONNREFUSED","EADDRINUSE","ECONNRESET","ENOTFOUND"],b={0:"",1:"Unacceptable protocol version",2:"Identifier rejected",3:"Server unavailable",4:"Bad username or password",5:"Not authorized",16:"No matching subscribers",17:"No subscription existed",128:"Unspecified error",129:"Malformed Packet",130:"Protocol Error",131:"Implementation specific error",132:"Unsupported Protocol Version",133:"Client Identifier not valid",134:"Bad User Name or Password",135:"Not authorized",136:"Server unavailable",137:"Server busy",138:"Banned",139:"Server shutting down",140:"Bad authentication method",141:"Keep Alive timeout",142:"Session taken over",143:"Topic Filter invalid",144:"Topic Name invalid",145:"Packet identifier in use",146:"Packet Identifier not found",147:"Receive Maximum exceeded",148:"Topic Alias invalid",149:"Packet too large",150:"Message rate too high",151:"Quota exceeded",152:"Administrative action",153:"Payload format invalid",154:"Retain not supported",155:"QoS not supported",156:"Use another server",157:"Server moved",158:"Shared Subscriptions not supported",159:"Connection rate exceeded",160:"Maximum connect time",161:"Subscription Identifiers not supported",162:"Wildcard Subscriptions not supported"};function y(e,t,r){p("sendPacket :: packet: %O",t),p("sendPacket :: emitting `packetsend`"),e.emit("packetsend",t),p("sendPacket :: writing to stream");var n=s.writeToStream(t,e.stream,e.options);p("sendPacket :: writeToStream result %s",n),!n&&r?(p("sendPacket :: handle events on `drain` once through callback."),e.stream.once("drain",r)):r&&(p("sendPacket :: invoking cb"),r())}function m(e,t,r,n){p("storeAndSend :: store packet with cmd %s to outgoingStore",t.cmd),e.outgoingStore.put(t,function(i){if(i)return r&&r(i);n(),y(e,t,r)})}function _(e){p("nop ::",e)}function v(e,t){var r,n=this;if(!(this instanceof v))return new v(e,t);for(r in this.options=t||{},d)void 0===this.options[r]?this.options[r]=d[r]:this.options[r]=t[r];p("MqttClient :: options.protocol",t.protocol),p("MqttClient :: options.protocolVersion",t.protocolVersion),p("MqttClient :: options.username",t.username),p("MqttClient :: options.keepalive",t.keepalive),p("MqttClient :: options.reconnectPeriod",t.reconnectPeriod),p("MqttClient :: options.rejectUnauthorized",t.rejectUnauthorized),this.options.clientId="string"==typeof t.clientId?t.clientId:"mqttjs_"+Math.random().toString(16).substr(2,8),p("MqttClient :: clientId",this.options.clientId),this.options.customHandleAcks=5===t.protocolVersion&&t.customHandleAcks?t.customHandleAcks:function(){arguments[3](0)},this.streamBuilder=e,this.outgoingStore=t.outgoingStore||new o,this.incomingStore=t.incomingStore||new o,this.queueQoSZero=void 0===t.queueQoSZero||t.queueQoSZero,this._resubscribeTopics={},this.messageIdToTopic={},this.pingTimer=null,this.connected=!1,this.disconnecting=!1,this.queue=[],this.connackTimer=null,this.reconnectTimer=null,this._storeProcessing=!1,this._packetIdsDuringStoreProcessing={},this.nextId=Math.max(1,Math.floor(65535*Math.random())),this.outgoing={},this._firstConnection=!0,this.on("connect",function(){var e=this.queue;p("connect :: sending queued packets"),function t(){var r=e.shift();p("deliver :: entry %o",r);var i;r&&(i=r.packet,p("deliver :: call _sendPacket for %o",i),n._sendPacket(i,function(e){r.cb&&r.cb(e),t()}))}()}),this.on("close",function(){p("close :: connected set to `false`"),this.connected=!1,p("close :: clearing connackTimer"),clearTimeout(this.connackTimer),p("close :: clearing ping timer"),null!==n.pingTimer&&(n.pingTimer.clear(),n.pingTimer=null),p("close :: calling _setupReconnect"),this._setupReconnect()}),i.call(this),p("MqttClient :: setting up stream"),this._setupStream()}u(v,i),v.prototype._setupStream=function(){var e,t=this,n=new a,i=s.parser(this.options),o=null,u=[];function c(){if(u.length)r.nextTick(l);else{var e=o;o=null,e()}}function l(){p("work :: getting next packet in queue");var e=u.shift();if(e)p("work :: packet pulled from queue"),t._handlePacket(e,c);else{p("work :: no packets in queue");var r=o;o=null,p("work :: done flag is %s",!!r),r&&r()}}if(p("_setupStream :: calling method to clear reconnect"),this._clearReconnect(),p("_setupStream :: using streamBuilder provided to client to create stream"),this.stream=this.streamBuilder(this),i.on("packet",function(e){p("parser :: on packet push to packets array."),u.push(e)}),n._write=function(e,t,r){o=r,p("writable stream :: parsing buffer"),i.parse(e),l()},p("_setupStream :: pipe stream to writable stream"),this.stream.pipe(n),this.stream.on("error",function(e){p("streamErrorHandler :: error",e.message),g.includes(e.code)?(p("streamErrorHandler :: emitting error"),t.emit("error",e)):_(e)}),this.stream.on("close",function(){var e;p("(%s)stream :: on close",t.options.clientId),(e=t.outgoing)&&(p("flushVolatile :: deleting volatile messages from the queue and setting their callbacks as error function"),Object.keys(e).forEach(function(t){e[t].volatile&&"function"==typeof e[t].cb&&(e[t].cb(new Error("Connection closed")),delete e[t])})),p("stream: emit close to MqttClient"),t.emit("close")}),p("_setupStream: sending packet `connect`"),(e=Object.create(this.options)).cmd="connect",y(this,e),i.on("error",this.emit.bind(this,"error")),this.options.properties){if(!this.options.properties.authenticationMethod&&this.options.properties.authenticationData)return t.end(()=>this.emit("error",new Error("Packet has no Authentication Method"))),this;if(this.options.properties.authenticationMethod&&this.options.authPacket&&"object"==typeof this.options.authPacket)y(this,f({cmd:"auth",reasonCode:0},this.options.authPacket))}this.stream.setMaxListeners(1e3),clearTimeout(this.connackTimer),this.connackTimer=setTimeout(function(){p("!!connectTimeout hit!! Calling _cleanUp with force `true`"),t._cleanUp(!0)},this.options.connectTimeout)},v.prototype._handlePacket=function(e,t){var r=this.options;if(5===r.protocolVersion&&r.properties&&r.properties.maximumPacketSize&&r.properties.maximumPacketSize<e.length)return this.emit("error",new Error("exceeding packets size "+e.cmd)),this.end({reasonCode:149,properties:{reasonString:"Maximum packet size was exceeded"}}),this;switch(p("_handlePacket :: emitting packetreceive"),this.emit("packetreceive",e),e.cmd){case"publish":this._handlePublish(e,t);break;case"puback":case"pubrec":case"pubcomp":case"suback":case"unsuback":this._handleAck(e),t();break;case"pubrel":this._handlePubrel(e,t);break;case"connack":this._handleConnack(e),t();break;case"pingresp":this._handlePingresp(e),t();break;case"disconnect":this._handleDisconnect(e),t()}},v.prototype._checkDisconnecting=function(e){return this.disconnecting&&(e?e(new Error("client disconnecting")):this.emit("error",new Error("client disconnecting"))),this.disconnecting},v.prototype.publish=function(e,t,r,n){var i;p("publish :: message `%s` to topic `%s`",t,e);var o=this.options;"function"==typeof r&&(n=r,r=null);if(r=f({qos:0,retain:!1,dup:!1},r),this._checkDisconnecting(n))return this;switch(i={cmd:"publish",topic:e,payload:t,qos:r.qos,retain:r.retain,messageId:this._nextId(),dup:r.dup},5===o.protocolVersion&&(i.properties=r.properties,(!o.properties&&i.properties&&i.properties.topicAlias||r.properties&&o.properties&&(r.properties.topicAlias&&o.properties.topicAliasMaximum&&r.properties.topicAlias>o.properties.topicAliasMaximum||!o.properties.topicAliasMaximum&&r.properties.topicAlias))&&delete i.properties.topicAlias),p("publish :: qos",r.qos),r.qos){case 1:case 2:this.outgoing[i.messageId]={volatile:!1,cb:n||_},this._storeProcessing?(p("_storeProcessing enabled"),this._packetIdsDuringStoreProcessing[i.messageId]=!1,this._storePacket(i,void 0,r.cbStorePut)):(p("MqttClient:publish: packet cmd: %s",i.cmd),this._sendPacket(i,void 0,r.cbStorePut));break;default:this._storeProcessing?(p("_storeProcessing enabled"),this._storePacket(i,n,r.cbStorePut)):(p("MqttClient:publish: packet cmd: %s",i.cmd),this._sendPacket(i,n,r.cbStorePut))}return this},v.prototype.subscribe=function(){for(var e,t=new Array(arguments.length),r=0;r<arguments.length;r++)t[r]=arguments[r];var n,i=[],o=t.shift(),s=o.resubscribe,a=t.pop()||_,u=t.pop(),c=this,d=this.options.protocolVersion;if(delete o.resubscribe,"string"==typeof o&&(o=[o]),"function"!=typeof a&&(u=a,a=_),null!==(n=l.validateTopics(o)))return h(a,new Error("Invalid topic "+n)),this;if(this._checkDisconnecting(a))return p("subscribe: discconecting true"),this;var g={qos:0};if(5===d&&(g.nl=!1,g.rap=!1,g.rh=0),u=f(g,u),Array.isArray(o)?o.forEach(function(e){if(p("subscribe: array topic %s",e),!c._resubscribeTopics.hasOwnProperty(e)||c._resubscribeTopics[e].qos<u.qos||s){var t={topic:e,qos:u.qos};5===d&&(t.nl=u.nl,t.rap=u.rap,t.rh=u.rh,t.properties=u.properties),p("subscribe: pushing topic `%s` and qos `%s` to subs list",t.topic,t.qos),i.push(t)}}):Object.keys(o).forEach(function(e){if(p("subscribe: object topic %s",e),!c._resubscribeTopics.hasOwnProperty(e)||c._resubscribeTopics[e].qos<o[e].qos||s){var t={topic:e,qos:o[e].qos};5===d&&(t.nl=o[e].nl,t.rap=o[e].rap,t.rh=o[e].rh,t.properties=u.properties),p("subscribe: pushing `%s` to subs list",t),i.push(t)}}),e={cmd:"subscribe",subscriptions:i,qos:1,retain:!1,dup:!1,messageId:this._nextId()},u.properties&&(e.properties=u.properties),i.length){if(this.options.resubscribe){p("subscribe :: resubscribe true");var b=[];i.forEach(function(e){if(c.options.reconnectPeriod>0){var t={qos:e.qos};5===d&&(t.nl=e.nl||!1,t.rap=e.rap||!1,t.rh=e.rh||0,t.properties=e.properties),c._resubscribeTopics[e.topic]=t,b.push(e.topic)}}),c.messageIdToTopic[e.messageId]=b}return this.outgoing[e.messageId]={volatile:!0,cb:function(e,t){if(!e)for(var r=t.granted,n=0;n<r.length;n+=1)i[n].qos=r[n];a(e,i)}},p("subscribe :: call _sendPacket"),this._sendPacket(e),this}a(null,[])},v.prototype.unsubscribe=function(){for(var e={cmd:"unsubscribe",qos:1,messageId:this._nextId()},t=this,r=new Array(arguments.length),n=0;n<arguments.length;n++)r[n]=arguments[n];var i=r.shift(),o=r.pop()||_,s=r.pop();return"string"==typeof i&&(i=[i]),"function"!=typeof o&&(s=o,o=_),this._checkDisconnecting(o)?this:("string"==typeof i?e.unsubscriptions=[i]:Array.isArray(i)&&(e.unsubscriptions=i),this.options.resubscribe&&e.unsubscriptions.forEach(function(e){delete t._resubscribeTopics[e]}),"object"==typeof s&&s.properties&&(e.properties=s.properties),this.outgoing[e.messageId]={volatile:!0,cb:o},p("unsubscribe: call _sendPacket"),this._sendPacket(e),this)},v.prototype.end=function(e,t,n){var i=this;function o(){p("end :: (%s) :: finish :: calling _cleanUp with force %s",i.options.clientId,e),i._cleanUp(e,()=>{p("end :: finish :: calling process.nextTick on closeStores"),r.nextTick(function(){p("end :: closeStores: closing incoming and outgoing stores"),i.disconnected=!0,i.incomingStore.close(function(){i.outgoingStore.close(function(){p("end :: closeStores: emitting end"),i.emit("end"),n&&(p("end :: closeStores: invoking callback with args"),n())})}),i._deferredReconnect&&i._deferredReconnect()}.bind(i))},t)}return p("end :: (%s)",this.options.clientId),null!=e&&"boolean"==typeof e||(n=t||_,t=e,e=!1,"object"!=typeof t&&(n=t,t=null,"function"!=typeof n&&(n=_))),"object"!=typeof t&&(n=t,t=null),p("end :: cb? %s",!!n),n=n||_,this.disconnecting?(n(),this):(this._clearReconnect(),this.disconnecting=!0,!e&&Object.keys(this.outgoing).length>0?(p("end :: (%s) :: calling finish in 10ms once outgoing is empty",i.options.clientId),this.once("outgoingEmpty",setTimeout.bind(null,o,10))):(p("end :: (%s) :: immediately calling finish",i.options.clientId),o()),this)},v.prototype.removeOutgoingMessage=function(e){var t=this.outgoing[e]?this.outgoing[e].cb:null;return delete this.outgoing[e],this.outgoingStore.del({messageId:e},function(){t(new Error("Message removed"))}),this},v.prototype.reconnect=function(e){p("client reconnect");var t=this,r=function(){e?(t.options.incomingStore=e.incomingStore,t.options.outgoingStore=e.outgoingStore):(t.options.incomingStore=null,t.options.outgoingStore=null),t.incomingStore=t.options.incomingStore||new o,t.outgoingStore=t.options.outgoingStore||new o,t.disconnecting=!1,t.disconnected=!1,t._deferredReconnect=null,t._reconnect()};return this.disconnecting&&!this.disconnected?this._deferredReconnect=r:r(),this},v.prototype._reconnect=function(){p("_reconnect: emitting reconnect to client"),this.emit("reconnect"),p("_reconnect: calling _setupStream"),this._setupStream()},v.prototype._setupReconnect=function(){var e=this;!e.disconnecting&&!e.reconnectTimer&&e.options.reconnectPeriod>0?(this.reconnecting||(p("_setupReconnect :: emit `offline` state"),this.emit("offline"),p("_setupReconnect :: set `reconnecting` to `true`"),this.reconnecting=!0),p("_setupReconnect :: setting reconnectTimer for %d ms",e.options.reconnectPeriod),e.reconnectTimer=setInterval(function(){p("reconnectTimer :: reconnect triggered!"),e._reconnect()},e.options.reconnectPeriod)):p("_setupReconnect :: doing nothing...")},v.prototype._clearReconnect=function(){p("_clearReconnect : clearing reconnect timer"),this.reconnectTimer&&(clearInterval(this.reconnectTimer),this.reconnectTimer=null)},v.prototype._cleanUp=function(e,t){var r,n=arguments[2];if(t&&(p("_cleanUp :: done callback provided for on stream close"),this.stream.on("close",t)),p("_cleanUp :: forced? %s",e),e)0===this.options.reconnectPeriod&&this.options.clean&&(r=this.outgoing)&&(p("flush: queue exists? %b",!!r),Object.keys(r).forEach(function(e){"function"==typeof r[e].cb&&(r[e].cb(new Error("Connection closed")),delete r[e])})),p("_cleanUp :: (%s) :: destroying stream",this.options.clientId),this.stream.destroy();else{var i=f({cmd:"disconnect"},n);p("_cleanUp :: (%s) :: call _sendPacket with disconnect packet",this.options.clientId),this._sendPacket(i,h.bind(null,this.stream.end.bind(this.stream)))}this.disconnecting||(p("_cleanUp :: client not disconnecting. Clearing and resetting reconnect."),this._clearReconnect(),this._setupReconnect()),null!==this.pingTimer&&(p("_cleanUp :: clearing pingTimer"),this.pingTimer.clear(),this.pingTimer=null),t&&!this.connected&&(p("_cleanUp :: (%s) :: removing stream `done` callback `close` listener",this.options.clientId),this.stream.removeListener("close",t),t())},v.prototype._sendPacket=function(e,t,r){if(p("_sendPacket :: (%s) ::  start",this.options.clientId),r=r||_,!this.connected)return p("_sendPacket :: client not connected. Storing packet offline."),void this._storePacket(e,t,r);switch(this._shiftPingInterval(),e.cmd){case"publish":break;case"pubrel":return void m(this,e,t,r);default:return void y(this,e,t)}switch(e.qos){case 2:case 1:m(this,e,t,r);break;case 0:default:y(this,e,t)}p("_sendPacket :: (%s) ::  end",this.options.clientId)},v.prototype._storePacket=function(e,t,r){p("_storePacket :: packet: %o",e),p("_storePacket :: cb? %s",!!t),r=r||_,0===(e.qos||0)&&this.queueQoSZero||"publish"!==e.cmd?this.queue.push({packet:e,cb:t}):e.qos>0?(t=this.outgoing[e.messageId]?this.outgoing[e.messageId].cb:null,this.outgoingStore.put(e,function(e){if(e)return t&&t(e);r()})):t&&t(new Error("No connection to broker"))},v.prototype._setupPingTimer=function(){p("_setupPingTimer :: keepalive %d (seconds)",this.options.keepalive);var e=this;!this.pingTimer&&this.options.keepalive&&(this.pingResp=!0,this.pingTimer=c(function(){e._checkPing()},1e3*this.options.keepalive))},v.prototype._shiftPingInterval=function(){this.pingTimer&&this.options.keepalive&&this.options.reschedulePings&&this.pingTimer.reschedule(1e3*this.options.keepalive)},v.prototype._checkPing=function(){p("_checkPing :: checking ping..."),this.pingResp?(p("_checkPing :: ping response received. Clearing flag and sending `pingreq`"),this.pingResp=!1,this._sendPacket({cmd:"pingreq"})):(p("_checkPing :: calling _cleanUp with force true"),this._cleanUp(!0))},v.prototype._handlePingresp=function(){this.pingResp=!0},v.prototype._handleConnack=function(e){p("_handleConnack");var t=this.options,r=5===t.protocolVersion?e.reasonCode:e.returnCode;if(clearTimeout(this.connackTimer),e.properties&&(e.properties.topicAliasMaximum&&(t.properties||(t.properties={}),t.properties.topicAliasMaximum=e.properties.topicAliasMaximum),e.properties.serverKeepAlive&&t.keepalive&&(t.keepalive=e.properties.serverKeepAlive,this._shiftPingInterval()),e.properties.maximumPacketSize&&(t.properties||(t.properties={}),t.properties.maximumPacketSize=e.properties.maximumPacketSize)),0===r)this.reconnecting=!1,this._onConnect(e);else if(r>0){var n=new Error("Connection refused: "+b[r]);n.code=r,this.emit("error",n)}},v.prototype._handlePublish=function(e,t){p("_handlePublish: packet %o",e),t=void 0!==t?t:_;var r=e.topic.toString(),n=e.payload,i=e.qos,o=e.messageId,s=this,a=this.options,u=[0,16,128,131,135,144,145,151,153];switch(p("_handlePublish: qos %d",i),i){case 2:a.customHandleAcks(r,n,e,function(r,n){return r instanceof Error||(n=r,r=null),r?s.emit("error",r):-1===u.indexOf(n)?s.emit("error",new Error("Wrong reason code for pubrec")):void(n?s._sendPacket({cmd:"pubrec",messageId:o,reasonCode:n},t):s.incomingStore.put(e,function(){s._sendPacket({cmd:"pubrec",messageId:o},t)}))});break;case 1:a.customHandleAcks(r,n,e,function(i,a){return i instanceof Error||(a=i,i=null),i?s.emit("error",i):-1===u.indexOf(a)?s.emit("error",new Error("Wrong reason code for puback")):(a||s.emit("message",r,n,e),void s.handleMessage(e,function(e){if(e)return t&&t(e);s._sendPacket({cmd:"puback",messageId:o,reasonCode:a},t)}))});break;case 0:this.emit("message",r,n,e),this.handleMessage(e,t);break;default:p("_handlePublish: unknown QoS. Doing nothing.")}},v.prototype.handleMessage=function(e,t){t()},v.prototype._handleAck=function(e){var t,r=e.messageId,n=e.cmd,i=null,o=this.outgoing[r]?this.outgoing[r].cb:null,s=this;if(o){switch(p("_handleAck :: packet type",n),n){case"pubcomp":case"puback":var a=e.reasonCode;a&&a>0&&16!==a&&((t=new Error("Publish error: "+b[a])).code=a,o(t,e)),delete this.outgoing[r],this.outgoingStore.del(e,o);break;case"pubrec":i={cmd:"pubrel",qos:2,messageId:r};var u=e.reasonCode;u&&u>0&&16!==u?((t=new Error("Publish error: "+b[u])).code=u,o(t,e)):this._sendPacket(i);break;case"suback":delete this.outgoing[r];for(var c=0;c<e.granted.length;c++)if(0!=(128&e.granted[c])){var l=this.messageIdToTopic[r];l&&l.forEach(function(e){delete s._resubscribeTopics[e]})}o(null,e);break;case"unsuback":delete this.outgoing[r],o(null);break;default:s.emit("error",new Error("unrecognized packet type"))}this.disconnecting&&0===Object.keys(this.outgoing).length&&this.emit("outgoingEmpty")}else p("_handleAck :: Server sent an ack in error. Ignoring.")},v.prototype._handlePubrel=function(e,t){p("handling pubrel packet"),t=void 0!==t?t:_;var r=this,n={cmd:"pubcomp",messageId:e.messageId};r.incomingStore.get(e,function(e,i){e?r._sendPacket(n,t):(r.emit("message",i.topic,i.payload,i),r.handleMessage(i,function(e){if(e)return t(e);r.incomingStore.del(i,_),r._sendPacket(n,t)}))})},v.prototype._handleDisconnect=function(e){this.emit("disconnect",e)},v.prototype._nextId=function(){var e=this.nextId++;return 65536===this.nextId&&(this.nextId=1),e},v.prototype.getLastMessageId=function(){return 1===this.nextId?65535:this.nextId-1},v.prototype._resubscribe=function(e){p("_resubscribe");var t=Object.keys(this._resubscribeTopics);if(!this._firstConnection&&(this.options.clean||5===this.options.protocolVersion&&!e.sessionPresent)&&t.length>0)if(this.options.resubscribe)if(5===this.options.protocolVersion){p("_resubscribe: protocolVersion 5");for(var r=0;r<t.length;r++){var n={};n[t[r]]=this._resubscribeTopics[t[r]],n.resubscribe=!0,this.subscribe(n,{properties:n[t[r]].properties})}}else this._resubscribeTopics.resubscribe=!0,this.subscribe(this._resubscribeTopics);else this._resubscribeTopics={};this._firstConnection=!1},v.prototype._onConnect=function(e){if(this.disconnected)this.emit("connect",e);else{var t=this;this._setupPingTimer(),this._resubscribe(e),this.connected=!0,function r(){var n=t.outgoingStore.createStream();function i(){t._storeProcessing=!1,t._packetIdsDuringStoreProcessing={}}function o(){n.destroy(),n=null,i()}t.once("close",o),n.on("error",function(e){i(),t.removeListener("close",o),t.emit("error",e)}),n.on("end",function(){var n=!0;for(var s in t._packetIdsDuringStoreProcessing)if(!t._packetIdsDuringStoreProcessing[s]){n=!1;break}n?(i(),t.removeListener("close",o),t.emit("connect",e)):r()}),function e(){if(n){t._storeProcessing=!0;var r,i=n.read(1);i?t._packetIdsDuringStoreProcessing[i.messageId]?e():t.disconnecting||t.reconnectTimer?n.destroy&&n.destroy():(r=t.outgoing[i.messageId]?t.outgoing[i.messageId].cb:null,t.outgoing[i.messageId]={volatile:!1,cb:function(t,n){r&&r(t,n),e()}},t._packetIdsDuringStoreProcessing[i.messageId]=!0,t._sendPacket(i)):n.once("readable",e)}}()}()}},t.exports=v}).call(this,e("_process"),"undefined"!=typeof global?global:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{})},{"./store":7,"./validations":8,_process:100,debug:17,events:83,inherits:88,"mqtt-packet":92,"readable-stream":116,reinterval:117,xtend:140}],2:[function(e,t,r){(function(r){"use strict";var n,i,o,s=e("readable-stream").Transform,a=e("duplexify"),u=e("base64-js"),c=!1;t.exports=function(e,t){if(t.hostname=t.hostname||t.host,!t.hostname)throw new Error("Could not determine host. Specify host manually.");var l="MQIsdp"===t.protocolId&&3===t.protocolVersion?"mqttv3.1":"mqtt";!function(e){e.hostname||(e.hostname="localhost"),e.path||(e.path="/"),e.wsOptions||(e.wsOptions={})}(t);var f=function(e,t){var r="alis"===e.protocol?"wss":"ws",n=r+"://"+e.hostname+e.path;return e.port&&80!==e.port&&443!==e.port&&(n=r+"://"+e.hostname+":"+e.port+e.path),"function"==typeof e.transformWsUrl&&(n=e.transformWsUrl(n,e,t)),n}(t,e);return(n=t.my).connectSocket({url:f,protocols:l}),i=function(){var e=new s;return e._write=function(e,t,r){n.sendSocketMessage({data:e.buffer,success:function(){r()},fail:function(){r(new Error)}})},e._flush=function(e){n.closeSocket({success:function(){e()}})},e}(),o=a.obj(),c||(c=!0,n.onSocketOpen(function(){o.setReadable(i),o.setWritable(i),o.emit("connect")}),n.onSocketMessage(function(e){if("string"==typeof e.data){var t=u.toByteArray(e.data),n=r.from(t);i.push(n)}else{var o=new FileReader;o.addEventListener("load",function(){var e=o.result;e=e instanceof ArrayBuffer?r.from(e):r.from(e,"utf8"),i.push(e)}),o.readAsArrayBuffer(e.data)}}),n.onSocketClose(function(){o.end(),o.destroy()}),n.onSocketError(function(e){o.destroy(e)})),o}}).call(this,e("buffer").Buffer)},{"base64-js":10,buffer:12,duplexify:19,"readable-stream":116}],3:[function(e,t,r){"use strict";var n=e("net"),i=e("debug")("mqttjs:tcp");t.exports=function(e,t){var r,o;return t.port=t.port||1883,t.hostname=t.hostname||t.host||"localhost",r=t.port,o=t.hostname,i("port %d and host %s",r,o),n.createConnection(r,o)}},{debug:17,net:11}],4:[function(e,t,r){"use strict";var n=e("tls"),i=e("debug")("mqttjs:tls");t.exports=function(e,t){var r;function o(n){t.rejectUnauthorized&&e.emit("error",n),r.end()}return t.port=t.port||8883,t.host=t.hostname||t.host||"localhost",t.servername=t.host,t.rejectUnauthorized=!1!==t.rejectUnauthorized,delete t.path,i("port %d host %s rejectUnauthorized %b",t.port,t.host,t.rejectUnauthorized),(r=n.connect(t)).on("secureConnect",function(){t.rejectUnauthorized&&!r.authorized?r.emit("error",new Error("TLS not authorized")):r.removeListener("error",o)}),r.on("error",o),r}},{debug:17,tls:11}],5:[function(e,t,r){(function(r){"use strict";var n=e("debug")("mqttjs:ws"),i=e("websocket-stream"),o=e("url"),s=["rejectUnauthorized","ca","cert","key","pfx","passphrase"],a="browser"===r.title;function u(e,t){n("createWebSocket");var r="MQIsdp"===t.protocolId&&3===t.protocolVersion?"mqttv3.1":"mqtt";!function(e){e.hostname||(e.hostname="localhost"),e.port||("wss"===e.protocol?e.port=443:e.port=80),e.path||(e.path="/"),e.wsOptions||(e.wsOptions={}),a||"wss"!==e.protocol||s.forEach(function(t){e.hasOwnProperty(t)&&!e.wsOptions.hasOwnProperty(t)&&(e.wsOptions[t]=e[t])})}(t);var o=function(e,t){var r=e.protocol+"://"+e.hostname+":"+e.port+e.path;return"function"==typeof e.transformWsUrl&&(r=e.transformWsUrl(r,e,t)),r}(t,e);return n("url %s protocol %s",o,r),i(o,[r],t.wsOptions)}t.exports=a?function(e,t){if(n("browserStreamBuilder"),t.hostname||(t.hostname=t.host),!t.hostname){if("undefined"==typeof document)throw new Error("Could not determine host. Specify host manually.");var r=o.parse(document.URL);t.hostname=r.hostname,t.port||(t.port=r.port)}return u(e,t)}:function(e,t){return u(e,t)}}).call(this,e("_process"))},{_process:100,debug:17,url:132,"websocket-stream":137}],6:[function(e,t,r){(function(r,n){"use strict";var i,o,s,a=e("readable-stream").Transform,u=e("duplexify");t.exports=function(e,t){if(t.hostname=t.hostname||t.host,!t.hostname)throw new Error("Could not determine host. Specify host manually.");var c="MQIsdp"===t.protocolId&&3===t.protocolVersion?"mqttv3.1":"mqtt";!function(e){e.hostname||(e.hostname="localhost"),e.path||(e.path="/"),e.wsOptions||(e.wsOptions={})}(t);var l=function(e,t){var r="wxs"===e.protocol?"wss":"ws",n=r+"://"+e.hostname+e.path;return e.port&&80!==e.port&&443!==e.port&&(n=r+"://"+e.hostname+":"+e.port+e.path),"function"==typeof e.transformWsUrl&&(n=e.transformWsUrl(n,e,t)),n}(t,e);i=wx.connectSocket({url:l,protocols:[c]}),o=function(){var e=new a;return e._write=function(e,t,r){i.send({data:e.buffer,success:function(){r()},fail:function(e){r(new Error(e))}})},e._flush=function(e){i.close({success:function(){e()}})},e}(),(s=u.obj())._destroy=function(e,t){i.close({success:function(){t&&t(e)}})};var f=s.destroy;return s.destroy=function(){s.destroy=f;var e=this;r.nextTick(function(){i.close({fail:function(){e._destroy(new Error)}})})}.bind(s),i.onOpen(function(){s.setReadable(o),s.setWritable(o),s.emit("connect")}),i.onMessage(function(e){var t=e.data;t=t instanceof ArrayBuffer?n.from(t):n.from(t,"utf8"),o.push(t)}),i.onClose(function(){s.end(),s.destroy()}),i.onError(function(e){s.destroy(new Error(e.errMsg))}),s}}).call(this,e("_process"),e("buffer").Buffer)},{_process:100,buffer:12,duplexify:19,"readable-stream":116}],7:[function(e,t,r){(function(r){"use strict";var n=e("xtend"),i=e("readable-stream").Readable,o={objectMode:!0},s={clean:!0},a=e("es6-map");function u(e){if(!(this instanceof u))return new u(e);this.options=e||{},this.options=n(s,e),this._inflights=new a}u.prototype.put=function(e,t){return this._inflights.set(e.messageId,e),t&&t(),this},u.prototype.createStream=function(){var e=new i(o),t=!1,n=[],s=0;return this._inflights.forEach(function(e,t){n.push(e)}),e._read=function(){!t&&s<n.length?this.push(n[s++]):this.push(null)},e.destroy=function(){if(!t){var e=this;t=!0,r.nextTick(function(){e.emit("close")})}},e},u.prototype.del=function(e,t){return(e=this._inflights.get(e.messageId))?(this._inflights.delete(e.messageId),t(null,e)):t&&t(new Error("missing packet")),this},u.prototype.get=function(e,t){return(e=this._inflights.get(e.messageId))?t(null,e):t&&t(new Error("missing packet")),this},u.prototype.close=function(e){this.options.clean&&(this._inflights=null),e&&e()},t.exports=u}).call(this,e("_process"))},{_process:100,"es6-map":68,"readable-stream":116,xtend:140}],8:[function(e,t,r){"use strict";function n(e){for(var t=e.split("/"),r=0;r<t.length;r++)if("+"!==t[r]){if("#"===t[r])return r===t.length-1;if(-1!==t[r].indexOf("+")||-1!==t[r].indexOf("#"))return!1}return!0}t.exports={validateTopics:function(e){if(0===e.length)return"empty_topic_list";for(var t=0;t<e.length;t++)if(!n(e[t]))return e[t];return null}}},{}],9:[function(e,t,r){(function(r){"use strict";var n=e("../client"),i=e("../store"),o=e("url"),s=e("xtend"),a=e("debug")("mqttjs"),u={};function c(e,t){if(a("connecting to an MQTT broker..."),"object"!=typeof e||t||(t=e,e=null),t=t||{},e){var r=o.parse(e,!0);if(null!=r.port&&(r.port=Number(r.port)),null===(t=s(r,t)).protocol)throw new Error("Missing protocol");t.protocol=t.protocol.replace(/:$/,"")}if(function(e){var t;e.auth&&((t=e.auth.match(/^(.+):(.+)$/))?(e.username=t[1],e.password=t[2]):e.username=e.auth)}(t),t.query&&"string"==typeof t.query.clientId&&(t.clientId=t.query.clientId),t.cert&&t.key){if(!t.protocol)throw new Error("Missing secure protocol key");if(-1===["mqtts","wss","wxs","alis"].indexOf(t.protocol))switch(t.protocol){case"mqtt":t.protocol="mqtts";break;case"ws":t.protocol="wss";break;case"wx":t.protocol="wxs";break;case"ali":t.protocol="alis";break;default:throw new Error('Unknown protocol for secure connection: "'+t.protocol+'"!')}}if(!u[t.protocol]){var i=-1!==["mqtts","wss"].indexOf(t.protocol);t.protocol=["mqtt","mqtts","ws","wss","wx","wxs","ali","alis"].filter(function(e,t){return(!i||t%2!=0)&&"function"==typeof u[e]})[0]}if(!1===t.clean&&!t.clientId)throw new Error("Missing clientId for unclean clients");t.protocol&&(t.defaultProtocol=t.protocol);var c=new n(function(e){return t.servers&&(e._reconnectCount&&e._reconnectCount!==t.servers.length||(e._reconnectCount=0),t.host=t.servers[e._reconnectCount].host,t.port=t.servers[e._reconnectCount].port,t.protocol=t.servers[e._reconnectCount].protocol?t.servers[e._reconnectCount].protocol:t.defaultProtocol,t.hostname=t.host,e._reconnectCount++),a("calling streambuilder for",t.protocol),u[t.protocol](e,t)},t);return c.on("error",function(){}),c}"browser"!==r.title?(u.mqtt=e("./tcp"),u.tcp=e("./tcp"),u.ssl=e("./tls"),u.tls=e("./tls"),u.mqtts=e("./tls")):(u.wx=e("./wx"),u.wxs=e("./wx"),u.ali=e("./ali"),u.alis=e("./ali")),u.ws=e("./ws"),u.wss=e("./ws"),t.exports=c,t.exports.connect=c,t.exports.MqttClient=n,t.exports.Store=i}).call(this,e("_process"))},{"../client":1,"../store":7,"./ali":2,"./tcp":3,"./tls":4,"./ws":5,"./wx":6,_process:100,debug:17,url:132,xtend:140}],10:[function(e,t,r){"use strict";r.byteLength=function(e){var t=c(e),r=t[0],n=t[1];return 3*(r+n)/4-n},r.toByteArray=function(e){for(var t,r=c(e),n=r[0],s=r[1],a=new o(function(e,t,r){return 3*(t+r)/4-r}(0,n,s)),u=0,l=s>0?n-4:n,f=0;f<l;f+=4)t=i[e.charCodeAt(f)]<<18|i[e.charCodeAt(f+1)]<<12|i[e.charCodeAt(f+2)]<<6|i[e.charCodeAt(f+3)],a[u++]=t>>16&255,a[u++]=t>>8&255,a[u++]=255&t;2===s&&(t=i[e.charCodeAt(f)]<<2|i[e.charCodeAt(f+1)]>>4,a[u++]=255&t);1===s&&(t=i[e.charCodeAt(f)]<<10|i[e.charCodeAt(f+1)]<<4|i[e.charCodeAt(f+2)]>>2,a[u++]=t>>8&255,a[u++]=255&t);return a},r.fromByteArray=function(e){for(var t,r=e.length,i=r%3,o=[],s=0,a=r-i;s<a;s+=16383)o.push(l(e,s,s+16383>a?a:s+16383));1===i?(t=e[r-1],o.push(n[t>>2]+n[t<<4&63]+"==")):2===i&&(t=(e[r-2]<<8)+e[r-1],o.push(n[t>>10]+n[t>>4&63]+n[t<<2&63]+"="));return o.join("")};for(var n=[],i=[],o="undefined"!=typeof Uint8Array?Uint8Array:Array,s="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",a=0,u=s.length;a<u;++a)n[a]=s[a],i[s.charCodeAt(a)]=a;function c(e){var t=e.length;if(t%4>0)throw new Error("Invalid string. Length must be a multiple of 4");var r=e.indexOf("=");return-1===r&&(r=t),[r,r===t?0:4-r%4]}function l(e,t,r){for(var i,o,s=[],a=t;a<r;a+=3)i=(e[a]<<16&16711680)+(e[a+1]<<8&65280)+(255&e[a+2]),s.push(n[(o=i)>>18&63]+n[o>>12&63]+n[o>>6&63]+n[63&o]);return s.join("")}i["-".charCodeAt(0)]=62,i["_".charCodeAt(0)]=63},{}],11:[function(e,t,r){},{}],12:[function(e,t,r){(function(t){"use strict";var n=e("base64-js"),i=e("ieee754");r.Buffer=t,r.SlowBuffer=function(e){+e!=e&&(e=0);return t.alloc(+e)},r.INSPECT_MAX_BYTES=50;var o=2147483647;function s(e){if(e>o)throw new RangeError('The value "'+e+'" is invalid for option "size"');var r=new Uint8Array(e);return r.__proto__=t.prototype,r}function t(e,t,r){if("number"==typeof e){if("string"==typeof t)throw new TypeError('The "string" argument must be of type string. Received type number');return c(e)}return a(e,t,r)}function a(e,r,n){if("string"==typeof e)return function(e,r){"string"==typeof r&&""!==r||(r="utf8");if(!t.isEncoding(r))throw new TypeError("Unknown encoding: "+r);var n=0|p(e,r),i=s(n),o=i.write(e,r);o!==n&&(i=i.slice(0,o));return i}(e,r);if(ArrayBuffer.isView(e))return l(e);if(null==e)throw TypeError("The first argument must be one of type string, Buffer, ArrayBuffer, Array, or Array-like Object. Received type "+typeof e);if(q(e,ArrayBuffer)||e&&q(e.buffer,ArrayBuffer))return function(e,r,n){if(r<0||e.byteLength<r)throw new RangeError('"offset" is outside of buffer bounds');if(e.byteLength<r+(n||0))throw new RangeError('"length" is outside of buffer bounds');var i;i=void 0===r&&void 0===n?new Uint8Array(e):void 0===n?new Uint8Array(e,r):new Uint8Array(e,r,n);return i.__proto__=t.prototype,i}(e,r,n);if("number"==typeof e)throw new TypeError('The "value" argument must not be of type number. Received type number');var i=e.valueOf&&e.valueOf();if(null!=i&&i!==e)return t.from(i,r,n);var o=function(e){if(t.isBuffer(e)){var r=0|f(e.length),n=s(r);return 0===n.length?n:(e.copy(n,0,0,r),n)}if(void 0!==e.length)return"number"!=typeof e.length||F(e.length)?s(0):l(e);if("Buffer"===e.type&&Array.isArray(e.data))return l(e.data)}(e);if(o)return o;if("undefined"!=typeof Symbol&&null!=Symbol.toPrimitive&&"function"==typeof e[Symbol.toPrimitive])return t.from(e[Symbol.toPrimitive]("string"),r,n);throw new TypeError("The first argument must be one of type string, Buffer, ArrayBuffer, Array, or Array-like Object. Received type "+typeof e)}function u(e){if("number"!=typeof e)throw new TypeError('"size" argument must be of type number');if(e<0)throw new RangeError('The value "'+e+'" is invalid for option "size"')}function c(e){return u(e),s(e<0?0:0|f(e))}function l(e){for(var t=e.length<0?0:0|f(e.length),r=s(t),n=0;n<t;n+=1)r[n]=255&e[n];return r}function f(e){if(e>=o)throw new RangeError("Attempt to allocate Buffer larger than maximum size: 0x"+o.toString(16)+" bytes");return 0|e}function p(e,r){if(t.isBuffer(e))return e.length;if(ArrayBuffer.isView(e)||q(e,ArrayBuffer))return e.byteLength;if("string"!=typeof e)throw new TypeError('The "string" argument must be one of type string, Buffer, or ArrayBuffer. Received type '+typeof e);var n=e.length,i=arguments.length>2&&!0===arguments[2];if(!i&&0===n)return 0;for(var o=!1;;)switch(r){case"ascii":case"latin1":case"binary":return n;case"utf8":case"utf-8":return U(e).length;case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return 2*n;case"hex":return n>>>1;case"base64":return N(e).length;default:if(o)return i?-1:U(e).length;r=(""+r).toLowerCase(),o=!0}}function h(e,t,r){var n=e[t];e[t]=e[r],e[r]=n}function d(e,r,n,i,o){if(0===e.length)return-1;if("string"==typeof n?(i=n,n=0):n>2147483647?n=2147483647:n<-2147483648&&(n=-2147483648),F(n=+n)&&(n=o?0:e.length-1),n<0&&(n=e.length+n),n>=e.length){if(o)return-1;n=e.length-1}else if(n<0){if(!o)return-1;n=0}if("string"==typeof r&&(r=t.from(r,i)),t.isBuffer(r))return 0===r.length?-1:g(e,r,n,i,o);if("number"==typeof r)return r&=255,"function"==typeof Uint8Array.prototype.indexOf?o?Uint8Array.prototype.indexOf.call(e,r,n):Uint8Array.prototype.lastIndexOf.call(e,r,n):g(e,[r],n,i,o);throw new TypeError("val must be string, number or Buffer")}function g(e,t,r,n,i){var o,s=1,a=e.length,u=t.length;if(void 0!==n&&("ucs2"===(n=String(n).toLowerCase())||"ucs-2"===n||"utf16le"===n||"utf-16le"===n)){if(e.length<2||t.length<2)return-1;s=2,a/=2,u/=2,r/=2}function c(e,t){return 1===s?e[t]:e.readUInt16BE(t*s)}if(i){var l=-1;for(o=r;o<a;o++)if(c(e,o)===c(t,-1===l?0:o-l)){if(-1===l&&(l=o),o-l+1===u)return l*s}else-1!==l&&(o-=o-l),l=-1}else for(r+u>a&&(r=a-u),o=r;o>=0;o--){for(var f=!0,p=0;p<u;p++)if(c(e,o+p)!==c(t,p)){f=!1;break}if(f)return o}return-1}function b(e,t,r,n){r=Number(r)||0;var i=e.length-r;n?(n=Number(n))>i&&(n=i):n=i;var o=t.length;n>o/2&&(n=o/2);for(var s=0;s<n;++s){var a=parseInt(t.substr(2*s,2),16);if(F(a))return s;e[r+s]=a}return s}function y(e,t,r,n){return L(U(t,e.length-r),e,r,n)}function m(e,t,r,n){return L(function(e){for(var t=[],r=0;r<e.length;++r)t.push(255&e.charCodeAt(r));return t}(t),e,r,n)}function _(e,t,r,n){return m(e,t,r,n)}function v(e,t,r,n){return L(N(t),e,r,n)}function w(e,t,r,n){return L(function(e,t){for(var r,n,i,o=[],s=0;s<e.length&&!((t-=2)<0);++s)r=e.charCodeAt(s),n=r>>8,i=r%256,o.push(i),o.push(n);return o}(t,e.length-r),e,r,n)}function S(e,t,r){return 0===t&&r===e.length?n.fromByteArray(e):n.fromByteArray(e.slice(t,r))}function x(e,t,r){r=Math.min(e.length,r);for(var n=[],i=t;i<r;){var o,s,a,u,c=e[i],l=null,f=c>239?4:c>223?3:c>191?2:1;if(i+f<=r)switch(f){case 1:c<128&&(l=c);break;case 2:128==(192&(o=e[i+1]))&&(u=(31&c)<<6|63&o)>127&&(l=u);break;case 3:o=e[i+1],s=e[i+2],128==(192&o)&&128==(192&s)&&(u=(15&c)<<12|(63&o)<<6|63&s)>2047&&(u<55296||u>57343)&&(l=u);break;case 4:o=e[i+1],s=e[i+2],a=e[i+3],128==(192&o)&&128==(192&s)&&128==(192&a)&&(u=(15&c)<<18|(63&o)<<12|(63&s)<<6|63&a)>65535&&u<1114112&&(l=u)}null===l?(l=65533,f=1):l>65535&&(l-=65536,n.push(l>>>10&1023|55296),l=56320|1023&l),n.push(l),i+=f}return function(e){var t=e.length;if(t<=k)return String.fromCharCode.apply(String,e);var r="",n=0;for(;n<t;)r+=String.fromCharCode.apply(String,e.slice(n,n+=k));return r}(n)}r.kMaxLength=o,t.TYPED_ARRAY_SUPPORT=function(){try{var e=new Uint8Array(1);return e.__proto__={__proto__:Uint8Array.prototype,foo:function(){return 42}},42===e.foo()}catch(e){return!1}}(),t.TYPED_ARRAY_SUPPORT||"undefined"==typeof console||"function"!=typeof console.error||console.error("This browser lacks typed array (Uint8Array) support which is required by `buffer` v5.x. Use `buffer` v4.x if you require old browser support."),Object.defineProperty(t.prototype,"parent",{enumerable:!0,get:function(){if(t.isBuffer(this))return this.buffer}}),Object.defineProperty(t.prototype,"offset",{enumerable:!0,get:function(){if(t.isBuffer(this))return this.byteOffset}}),"undefined"!=typeof Symbol&&null!=Symbol.species&&t[Symbol.species]===t&&Object.defineProperty(t,Symbol.species,{value:null,configurable:!0,enumerable:!1,writable:!1}),t.poolSize=8192,t.from=function(e,t,r){return a(e,t,r)},t.prototype.__proto__=Uint8Array.prototype,t.__proto__=Uint8Array,t.alloc=function(e,t,r){return function(e,t,r){return u(e),e<=0?s(e):void 0!==t?"string"==typeof r?s(e).fill(t,r):s(e).fill(t):s(e)}(e,t,r)},t.allocUnsafe=function(e){return c(e)},t.allocUnsafeSlow=function(e){return c(e)},t.isBuffer=function(e){return null!=e&&!0===e._isBuffer&&e!==t.prototype},t.compare=function(e,r){if(q(e,Uint8Array)&&(e=t.from(e,e.offset,e.byteLength)),q(r,Uint8Array)&&(r=t.from(r,r.offset,r.byteLength)),!t.isBuffer(e)||!t.isBuffer(r))throw new TypeError('The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array');if(e===r)return 0;for(var n=e.length,i=r.length,o=0,s=Math.min(n,i);o<s;++o)if(e[o]!==r[o]){n=e[o],i=r[o];break}return n<i?-1:i<n?1:0},t.isEncoding=function(e){switch(String(e).toLowerCase()){case"hex":case"utf8":case"utf-8":case"ascii":case"latin1":case"binary":case"base64":case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return!0;default:return!1}},t.concat=function(e,r){if(!Array.isArray(e))throw new TypeError('"list" argument must be an Array of Buffers');if(0===e.length)return t.alloc(0);var n;if(void 0===r)for(r=0,n=0;n<e.length;++n)r+=e[n].length;var i=t.allocUnsafe(r),o=0;for(n=0;n<e.length;++n){var s=e[n];if(q(s,Uint8Array)&&(s=t.from(s)),!t.isBuffer(s))throw new TypeError('"list" argument must be an Array of Buffers');s.copy(i,o),o+=s.length}return i},t.byteLength=p,t.prototype._isBuffer=!0,t.prototype.swap16=function(){var e=this.length;if(e%2!=0)throw new RangeError("Buffer size must be a multiple of 16-bits");for(var t=0;t<e;t+=2)h(this,t,t+1);return this},t.prototype.swap32=function(){var e=this.length;if(e%4!=0)throw new RangeError("Buffer size must be a multiple of 32-bits");for(var t=0;t<e;t+=4)h(this,t,t+3),h(this,t+1,t+2);return this},t.prototype.swap64=function(){var e=this.length;if(e%8!=0)throw new RangeError("Buffer size must be a multiple of 64-bits");for(var t=0;t<e;t+=8)h(this,t,t+7),h(this,t+1,t+6),h(this,t+2,t+5),h(this,t+3,t+4);return this},t.prototype.toString=function(){var e=this.length;return 0===e?"":0===arguments.length?x(this,0,e):function(e,t,r){var n=!1;if((void 0===t||t<0)&&(t=0),t>this.length)return"";if((void 0===r||r>this.length)&&(r=this.length),r<=0)return"";if((r>>>=0)<=(t>>>=0))return"";for(e||(e="utf8");;)switch(e){case"hex":return C(this,t,r);case"utf8":case"utf-8":return x(this,t,r);case"ascii":return E(this,t,r);case"latin1":case"binary":return I(this,t,r);case"base64":return S(this,t,r);case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return O(this,t,r);default:if(n)throw new TypeError("Unknown encoding: "+e);e=(e+"").toLowerCase(),n=!0}}.apply(this,arguments)},t.prototype.toLocaleString=t.prototype.toString,t.prototype.equals=function(e){if(!t.isBuffer(e))throw new TypeError("Argument must be a Buffer");return this===e||0===t.compare(this,e)},t.prototype.inspect=function(){var e="",t=r.INSPECT_MAX_BYTES;return e=this.toString("hex",0,t).replace(/(.{2})/g,"$1 ").trim(),this.length>t&&(e+=" ... "),"<Buffer "+e+">"},t.prototype.compare=function(e,r,n,i,o){if(q(e,Uint8Array)&&(e=t.from(e,e.offset,e.byteLength)),!t.isBuffer(e))throw new TypeError('The "target" argument must be one of type Buffer or Uint8Array. Received type '+typeof e);if(void 0===r&&(r=0),void 0===n&&(n=e?e.length:0),void 0===i&&(i=0),void 0===o&&(o=this.length),r<0||n>e.length||i<0||o>this.length)throw new RangeError("out of range index");if(i>=o&&r>=n)return 0;if(i>=o)return-1;if(r>=n)return 1;if(r>>>=0,n>>>=0,i>>>=0,o>>>=0,this===e)return 0;for(var s=o-i,a=n-r,u=Math.min(s,a),c=this.slice(i,o),l=e.slice(r,n),f=0;f<u;++f)if(c[f]!==l[f]){s=c[f],a=l[f];break}return s<a?-1:a<s?1:0},t.prototype.includes=function(e,t,r){return-1!==this.indexOf(e,t,r)},t.prototype.indexOf=function(e,t,r){return d(this,e,t,r,!0)},t.prototype.lastIndexOf=function(e,t,r){return d(this,e,t,r,!1)},t.prototype.write=function(e,t,r,n){if(void 0===t)n="utf8",r=this.length,t=0;else if(void 0===r&&"string"==typeof t)n=t,r=this.length,t=0;else{if(!isFinite(t))throw new Error("Buffer.write(string, encoding, offset[, length]) is no longer supported");t>>>=0,isFinite(r)?(r>>>=0,void 0===n&&(n="utf8")):(n=r,r=void 0)}var i=this.length-t;if((void 0===r||r>i)&&(r=i),e.length>0&&(r<0||t<0)||t>this.length)throw new RangeError("Attempt to write outside buffer bounds");n||(n="utf8");for(var o=!1;;)switch(n){case"hex":return b(this,e,t,r);case"utf8":case"utf-8":return y(this,e,t,r);case"ascii":return m(this,e,t,r);case"latin1":case"binary":return _(this,e,t,r);case"base64":return v(this,e,t,r);case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return w(this,e,t,r);default:if(o)throw new TypeError("Unknown encoding: "+n);n=(""+n).toLowerCase(),o=!0}},t.prototype.toJSON=function(){return{type:"Buffer",data:Array.prototype.slice.call(this._arr||this,0)}};var k=4096;function E(e,t,r){var n="";r=Math.min(e.length,r);for(var i=t;i<r;++i)n+=String.fromCharCode(127&e[i]);return n}function I(e,t,r){var n="";r=Math.min(e.length,r);for(var i=t;i<r;++i)n+=String.fromCharCode(e[i]);return n}function C(e,t,r){var n=e.length;(!t||t<0)&&(t=0),(!r||r<0||r>n)&&(r=n);for(var i="",o=t;o<r;++o)i+=R(e[o]);return i}function O(e,t,r){for(var n=e.slice(t,r),i="",o=0;o<n.length;o+=2)i+=String.fromCharCode(n[o]+256*n[o+1]);return i}function j(e,t,r){if(e%1!=0||e<0)throw new RangeError("offset is not uint");if(e+t>r)throw new RangeError("Trying to access beyond buffer length")}function T(e,r,n,i,o,s){if(!t.isBuffer(e))throw new TypeError('"buffer" argument must be a Buffer instance');if(r>o||r<s)throw new RangeError('"value" argument is out of bounds');if(n+i>e.length)throw new RangeError("Index out of range")}function A(e,t,r,n,i,o){if(r+n>e.length)throw new RangeError("Index out of range");if(r<0)throw new RangeError("Index out of range")}function P(e,t,r,n,o){return t=+t,r>>>=0,o||A(e,0,r,4),i.write(e,t,r,n,23,4),r+4}function M(e,t,r,n,o){return t=+t,r>>>=0,o||A(e,0,r,8),i.write(e,t,r,n,52,8),r+8}t.prototype.slice=function(e,r){var n=this.length;e=~~e,r=void 0===r?n:~~r,e<0?(e+=n)<0&&(e=0):e>n&&(e=n),r<0?(r+=n)<0&&(r=0):r>n&&(r=n),r<e&&(r=e);var i=this.subarray(e,r);return i.__proto__=t.prototype,i},t.prototype.readUIntLE=function(e,t,r){e>>>=0,t>>>=0,r||j(e,t,this.length);for(var n=this[e],i=1,o=0;++o<t&&(i*=256);)n+=this[e+o]*i;return n},t.prototype.readUIntBE=function(e,t,r){e>>>=0,t>>>=0,r||j(e,t,this.length);for(var n=this[e+--t],i=1;t>0&&(i*=256);)n+=this[e+--t]*i;return n},t.prototype.readUInt8=function(e,t){return e>>>=0,t||j(e,1,this.length),this[e]},t.prototype.readUInt16LE=function(e,t){return e>>>=0,t||j(e,2,this.length),this[e]|this[e+1]<<8},t.prototype.readUInt16BE=function(e,t){return e>>>=0,t||j(e,2,this.length),this[e]<<8|this[e+1]},t.prototype.readUInt32LE=function(e,t){return e>>>=0,t||j(e,4,this.length),(this[e]|this[e+1]<<8|this[e+2]<<16)+16777216*this[e+3]},t.prototype.readUInt32BE=function(e,t){return e>>>=0,t||j(e,4,this.length),16777216*this[e]+(this[e+1]<<16|this[e+2]<<8|this[e+3])},t.prototype.readIntLE=function(e,t,r){e>>>=0,t>>>=0,r||j(e,t,this.length);for(var n=this[e],i=1,o=0;++o<t&&(i*=256);)n+=this[e+o]*i;return n>=(i*=128)&&(n-=Math.pow(2,8*t)),n},t.prototype.readIntBE=function(e,t,r){e>>>=0,t>>>=0,r||j(e,t,this.length);for(var n=t,i=1,o=this[e+--n];n>0&&(i*=256);)o+=this[e+--n]*i;return o>=(i*=128)&&(o-=Math.pow(2,8*t)),o},t.prototype.readInt8=function(e,t){return e>>>=0,t||j(e,1,this.length),128&this[e]?-1*(255-this[e]+1):this[e]},t.prototype.readInt16LE=function(e,t){e>>>=0,t||j(e,2,this.length);var r=this[e]|this[e+1]<<8;return 32768&r?4294901760|r:r},t.prototype.readInt16BE=function(e,t){e>>>=0,t||j(e,2,this.length);var r=this[e+1]|this[e]<<8;return 32768&r?4294901760|r:r},t.prototype.readInt32LE=function(e,t){return e>>>=0,t||j(e,4,this.length),this[e]|this[e+1]<<8|this[e+2]<<16|this[e+3]<<24},t.prototype.readInt32BE=function(e,t){return e>>>=0,t||j(e,4,this.length),this[e]<<24|this[e+1]<<16|this[e+2]<<8|this[e+3]},t.prototype.readFloatLE=function(e,t){return e>>>=0,t||j(e,4,this.length),i.read(this,e,!0,23,4)},t.prototype.readFloatBE=function(e,t){return e>>>=0,t||j(e,4,this.length),i.read(this,e,!1,23,4)},t.prototype.readDoubleLE=function(e,t){return e>>>=0,t||j(e,8,this.length),i.read(this,e,!0,52,8)},t.prototype.readDoubleBE=function(e,t){return e>>>=0,t||j(e,8,this.length),i.read(this,e,!1,52,8)},t.prototype.writeUIntLE=function(e,t,r,n){(e=+e,t>>>=0,r>>>=0,n)||T(this,e,t,r,Math.pow(2,8*r)-1,0);var i=1,o=0;for(this[t]=255&e;++o<r&&(i*=256);)this[t+o]=e/i&255;return t+r},t.prototype.writeUIntBE=function(e,t,r,n){(e=+e,t>>>=0,r>>>=0,n)||T(this,e,t,r,Math.pow(2,8*r)-1,0);var i=r-1,o=1;for(this[t+i]=255&e;--i>=0&&(o*=256);)this[t+i]=e/o&255;return t+r},t.prototype.writeUInt8=function(e,t,r){return e=+e,t>>>=0,r||T(this,e,t,1,255,0),this[t]=255&e,t+1},t.prototype.writeUInt16LE=function(e,t,r){return e=+e,t>>>=0,r||T(this,e,t,2,65535,0),this[t]=255&e,this[t+1]=e>>>8,t+2},t.prototype.writeUInt16BE=function(e,t,r){return e=+e,t>>>=0,r||T(this,e,t,2,65535,0),this[t]=e>>>8,this[t+1]=255&e,t+2},t.prototype.writeUInt32LE=function(e,t,r){return e=+e,t>>>=0,r||T(this,e,t,4,4294967295,0),this[t+3]=e>>>24,this[t+2]=e>>>16,this[t+1]=e>>>8,this[t]=255&e,t+4},t.prototype.writeUInt32BE=function(e,t,r){return e=+e,t>>>=0,r||T(this,e,t,4,4294967295,0),this[t]=e>>>24,this[t+1]=e>>>16,this[t+2]=e>>>8,this[t+3]=255&e,t+4},t.prototype.writeIntLE=function(e,t,r,n){if(e=+e,t>>>=0,!n){var i=Math.pow(2,8*r-1);T(this,e,t,r,i-1,-i)}var o=0,s=1,a=0;for(this[t]=255&e;++o<r&&(s*=256);)e<0&&0===a&&0!==this[t+o-1]&&(a=1),this[t+o]=(e/s>>0)-a&255;return t+r},t.prototype.writeIntBE=function(e,t,r,n){if(e=+e,t>>>=0,!n){var i=Math.pow(2,8*r-1);T(this,e,t,r,i-1,-i)}var o=r-1,s=1,a=0;for(this[t+o]=255&e;--o>=0&&(s*=256);)e<0&&0===a&&0!==this[t+o+1]&&(a=1),this[t+o]=(e/s>>0)-a&255;return t+r},t.prototype.writeInt8=function(e,t,r){return e=+e,t>>>=0,r||T(this,e,t,1,127,-128),e<0&&(e=255+e+1),this[t]=255&e,t+1},t.prototype.writeInt16LE=function(e,t,r){return e=+e,t>>>=0,r||T(this,e,t,2,32767,-32768),this[t]=255&e,this[t+1]=e>>>8,t+2},t.prototype.writeInt16BE=function(e,t,r){return e=+e,t>>>=0,r||T(this,e,t,2,32767,-32768),this[t]=e>>>8,this[t+1]=255&e,t+2},t.prototype.writeInt32LE=function(e,t,r){return e=+e,t>>>=0,r||T(this,e,t,4,2147483647,-2147483648),this[t]=255&e,this[t+1]=e>>>8,this[t+2]=e>>>16,this[t+3]=e>>>24,t+4},t.prototype.writeInt32BE=function(e,t,r){return e=+e,t>>>=0,r||T(this,e,t,4,2147483647,-2147483648),e<0&&(e=4294967295+e+1),this[t]=e>>>24,this[t+1]=e>>>16,this[t+2]=e>>>8,this[t+3]=255&e,t+4},t.prototype.writeFloatLE=function(e,t,r){return P(this,e,t,!0,r)},t.prototype.writeFloatBE=function(e,t,r){return P(this,e,t,!1,r)},t.prototype.writeDoubleLE=function(e,t,r){return M(this,e,t,!0,r)},t.prototype.writeDoubleBE=function(e,t,r){return M(this,e,t,!1,r)},t.prototype.copy=function(e,r,n,i){if(!t.isBuffer(e))throw new TypeError("argument should be a Buffer");if(n||(n=0),i|