!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. 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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 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s.writeUInt8(i.codes[e]<<i.CMD_SHIFT|(r?i.DUP_MASK:0)|t<<i.QOS_SHIFT|o,0,!0),s})})})}i.propertiesTypes={sessionExpiryInterval:"int32",willDelayInterval:"int32",receiveMaximum:"int16",maximumPacketSize:"int32",topicAliasMaximum:"int16",requestResponseInformation:"byte",requestProblemInformation:"byte",userProperties:"pair",authenticationMethod:"string",authenticationData:"binary",payloadFormatIndicator:"byte",messageExpiryInterval:"int32",contentType:"string",responseTopic:"string",correlationData:"binary",maximumQoS:"int8",retainAvailable:"byte",assignedClientIdentifier:"string",reasonString:"string",wildcardSubscriptionAvailable:"byte",subscriptionIdentifiersAvailable:"byte",sharedSubscriptionAvailable:"byte",serverKeepAlive:"int32",responseInformation:"string",serverReference:"string",topicAlias:"int16",subscriptionIdentifier:"var"},i.PUBLISH_HEADER=c("publish"),i.SUBSCRIBE_HEADER=c("subscribe"),i.SUBSCRIBE_OPTIONS_QOS_MASK=3,i.SUBSCRIBE_OPTIONS_NL_MASK=1,i.SUBSCRIBE_OPTIONS_NL_SHIFT=2,i.SUBSCRIBE_OPTIONS_RAP_MASK=1,i.SUBSCRIBE_OPTIONS_RAP_SHIFT=3,i.SUBSCRIBE_OPTIONS_RH_MASK=3,i.SUBSCRIBE_OPTIONS_RH_SHIFT=4,i.SUBSCRIBE_OPTIONS_RH=[0,16,32],i.SUBSCRIBE_OPTIONS_NL=4,i.SUBSCRIBE_OPTIONS_RAP=8,i.SUBSCRIBE_OPTIONS_QOS=[0,1,2],i.UNSUBSCRIBE_HEADER=c("unsubscribe"),i.ACKS={unsuback:c("unsuback"),puback:c("puback"),pubcomp:c("pubcomp"),pubrel:c("pubrel"),pubrec:c("pubrec")},i.SUBACK_HEADER=n.from([i.codes.suback<<i.CMD_SHIFT]),i.VERSION3=n.from([3]),i.VERSION4=n.from([4]),i.VERSION5=n.from([5]),i.QOS=[0,1,2].map(function(e){return n.from([e])}),i.EMPTY={pingreq:n.from([i.codes.pingreq<<4,0]),pingresp:n.from([i.codes.pingresp<<4,0]),disconnect:n.from([i.codes.disconnect<<4,0])}},{"safe-buffer":118}],91:[function(e,t,r){"use strict";var n=e("safe-buffer").Buffer,i=e("./writeToStream"),o=e("events").EventEmitter;function s(){this._array=new Array(20),this._i=0}e("inherits")(s,o),s.prototype.write=function(e){return this._array[this._i++]=e,!0},s.prototype.concat=function(){var e,t,r=0,i=new Array(this._array.length),o=this._array,s=0;for(e=0;e<o.length&&void 0!==o[e];e++)"string"!=typeof o[e]?i[e]=o[e].length:i[e]=n.byteLength(o[e]),r+=i[e];for(t=n.allocUnsafe(r),e=0;e<o.length&&void 0!==o[e];e++)"string"!=typeof o[e]?(o[e].copy(t,s),s+=i[e]):(t.write(o[e],s),s+=i[e]);return t},t.exports=function(e,t){var r=new s;return i(e,r,t),r.concat()}},{"./writeToStream":97,events:83,inherits:88,"safe-buffer":118}],92:[function(e,t,r){"use strict";r.parser=e("./parser"),r.generate=e("./generate"),r.writeToStream=e("./writeToStream")},{"./generate":91,"./parser":96,"./writeToStream":97}],93:[function(e,t,r){var n=e("readable-stream/duplex"),i=e("util"),o=e("safe-buffer").Buffer;function s(e){if(!(this instanceof s))return new s(e);if(this._bufs=[],this.length=0,"function"==typeof e){this._callback=e;var t=function(e){this._callback&&(this._callback(e),this._callback=null)}.bind(this);this.on("pipe",function(e){e.on("error",t)}),this.on("unpipe",function(e){e.removeListener("error",t)})}else this.append(e);n.call(this)}i.inherits(s,n),s.prototype._offset=function(e){var t,r=0,n=0;if(0===e)return[0,0];for(;n<this._bufs.length;n++){if(e<(t=r+this._bufs[n].length)||n==this._bufs.length-1)return[n,e-r];r=t}},s.prototype.append=function(e){var t=0;if(o.isBuffer(e))this._appendBuffer(e);else if(Array.isArray(e))for(;t<e.length;t++)this.append(e[t]);else if(e instanceof s)for(;t<e._bufs.length;t++)this.append(e._bufs[t]);else null!=e&&("number"==typeof e&&(e=e.toString()),this._appendBuffer(o.from(e)));return this},s.prototype._appendBuffer=function(e){this._bufs.push(e),this.length+=e.length},s.prototype._write=function(e,t,r){this._appendBuffer(e),"function"==typeof r&&r()},s.prototype._read=function(e){if(!this.length)return this.push(null);e=Math.min(e,this.length),this.push(this.slice(0,e)),this.consume(e)},s.prototype.end=function(e){n.prototype.end.call(this,e),this._callback&&(this._callback(null,this.slice()),this._callback=null)},s.prototype.get=function(e){return this.slice(e,e+1)[0]},s.prototype.slice=function(e,t){return"number"==typeof e&&e<0&&(e+=this.length),"number"==typeof t&&t<0&&(t+=this.length),this.copy(null,0,e,t)},s.prototype.copy=function(e,t,r,n){if(("number"!=typeof r||r<0)&&(r=0),("number"!=typeof n||n>this.length)&&(n=this.length),r>=this.length)return e||o.alloc(0);if(n<=0)return e||o.alloc(0);var i,s,a=!!e,u=this._offset(r),c=n-r,l=c,f=a&&t||0,p=u[1];if(0===r&&n==this.length){if(!a)return 1===this._bufs.length?this._bufs[0]:o.concat(this._bufs,this.length);for(s=0;s<this._bufs.length;s++)this._bufs[s].copy(e,f),f+=this._bufs[s].length;return e}if(l<=this._bufs[u[0]].length-p)return a?this._bufs[u[0]].copy(e,t,p,p+l):this._bufs[u[0]].slice(p,p+l);for(a||(e=o.allocUnsafe(c)),s=u[0];s<this._bufs.length;s++){if(!(l>(i=this._bufs[s].length-p))){this._bufs[s].copy(e,f,p,p+l);break}this._bufs[s].copy(e,f,p),f+=i,l-=i,p&&(p=0)}return e},s.prototype.shallowSlice=function(e,t){e=e||0,t=t||this.length,e<0&&(e+=this.length),t<0&&(t+=this.length);var r=this._offset(e),n=this._offset(t),i=this._bufs.slice(r[0],n[0]+1);return 0==n[1]?i.pop():i[i.length-1]=i[i.length-1].slice(0,n[1]),0!=r[1]&&(i[0]=i[0].slice(r[1])),new s(i)},s.prototype.toString=function(e,t,r){return this.slice(t,r).toString(e)},s.prototype.consume=function(e){for(;this._bufs.length;){if(!(e>=this._bufs[0].length)){this._bufs[0]=this._bufs[0].slice(e),this.length-=e;break}e-=this._bufs[0].length,this.length-=this._bufs[0].length,this._bufs.shift()}return this},s.prototype.duplicate=function(){for(var e=0,t=new s;e<this._bufs.length;e++)t.append(this._bufs[e]);return t},s.prototype.destroy=function(){this._bufs.length=0,this.length=0,this.push(null)},function(){var e={readDoubleBE:8,readDoubleLE:8,readFloatBE:4,readFloatLE:4,readInt32BE:4,readInt32LE:4,readUInt32BE:4,readUInt32LE:4,readInt16BE:2,readInt16LE:2,readUInt16BE:2,readUInt16LE:2,readInt8:1,readUInt8:1};for(var t in e)!function(t){s.prototype[t]=function(r){return this.slice(r,r+e[t])[t](0)}}(t)}(),t.exports=s},{"readable-stream/duplex":105,"safe-buffer":118,util:136}],94:[function(e,t,r){"use strict";var n=e("safe-buffer").Buffer,i=65536,o={};function s(e){var t=n.allocUnsafe(2);return t.writeUInt8(e>>8,0),t.writeUInt8(255&e,1),t}t.exports={cache:o,generateCache:function(){for(var e=0;e<i;e++)o[e]=s(e)},generateNumber:s,genBufVariableByteInt:function(e){var t=0,r=0,i=function(e){return e>=0&&e<128?1:e>=128&&e<16384?2:e>=16384&&e<2097152?3:e>=2097152&&e<268435456?4:0}(e),o=n.allocUnsafe(i);do{t=e%128|0,(e=e/128|0)>0&&(t|=128),o.writeUInt8(t,r++)}while(e>0);return{data:o,length:i}},generate4ByteBuffer:function(e){var t=n.allocUnsafe(4);return t.writeUInt32BE(e,0),t}}},{"safe-buffer":118}],95:[function(e,t,r){t.exports=function(){this.cmd=null,this.retain=!1,this.qos=0,this.dup=!1,this.length=-1,this.topic=null,this.payload=null}},{}],96:[function(e,t,r){"use strict";var n=e("bl"),i=e("inherits"),o=e("events").EventEmitter,s=e("./packet"),a=e("./constants");function u(e){if(!(this instanceof u))return new u(e);this.settings=e||{},this._states=["_parseHeader","_parseLength","_parsePayload","_newPacket"],this._resetState()}i(u,o),u.prototype._resetState=function(){this.packet=new s,this.error=null,this._list=n(),this._stateCounter=0},u.prototype.parse=function(e){for(this.error&&this._resetState(),this._list.append(e);(-1!==this.packet.length||this._list.length>0)&&this[this._states[this._stateCounter]]()&&!this.error;)this._stateCounter++,this._stateCounter>=this._states.length&&(this._stateCounter=0);return this._list.length},u.prototype._parseHeader=function(){var e=this._list.readUInt8(0);return this.packet.cmd=a.types[e>>a.CMD_SHIFT],this.packet.retain=0!=(e&a.RETAIN_MASK),this.packet.qos=e>>a.QOS_SHIFT&a.QOS_MASK,this.packet.dup=0!=(e&a.DUP_MASK),this._list.consume(1),!0},u.prototype._parseLength=function(){var e=this._parseVarByteNum(!0);return e&&(this.packet.length=e.value,this._list.consume(e.bytes)),!!e},u.prototype._parsePayload=function(){var e=!1;if(0===this.packet.length||this._list.length>=this.packet.length){switch(this._pos=0,this.packet.cmd){case"connect":this._parseConnect();break;case"connack":this._parseConnack();break;case"publish":this._parsePublish();break;case"puback":case"pubrec":case"pubrel":case"pubcomp":this._parseConfirmation();break;case"subscribe":this._parseSubscribe();break;case"suback":this._parseSuback();break;case"unsubscribe":this._parseUnsubscribe();break;case"unsuback":this._parseUnsuback();break;case"pingreq":case"pingresp":break;case"disconnect":this._parseDisconnect();break;case"auth":this._parseAuth();break;default:this._emitError(new Error("Not supported"))}e=!0}return e},u.prototype._parseConnect=function(){var e,t,r,n,i,o,s={},u=this.packet;if(null===(e=this._parseString()))return this._emitError(new Error("Cannot parse protocolId"));if("MQTT"!==e&&"MQIsdp"!==e)return this._emitError(new Error("Invalid protocolId"));if(u.protocolId=e,this._pos>=this._list.length)return this._emitError(new Error("Packet too short"));if(u.protocolVersion=this._list.readUInt8(this._pos),3!==u.protocolVersion&&4!==u.protocolVersion&&5!==u.protocolVersion)return this._emitError(new Error("Invalid protocol version"));if(this._pos++,this._pos>=this._list.length)return this._emitError(new Error("Packet too short"));if(s.username=this._list.readUInt8(this._pos)&a.USERNAME_MASK,s.password=this._list.readUInt8(this._pos)&a.PASSWORD_MASK,s.will=this._list.readUInt8(this._pos)&a.WILL_FLAG_MASK,s.will&&(u.will={},u.will.retain=0!=(this._list.readUInt8(this._pos)&a.WILL_RETAIN_MASK),u.will.qos=(this._list.readUInt8(this._pos)&a.WILL_QOS_MASK)>>a.WILL_QOS_SHIFT),u.clean=0!=(this._list.readUInt8(this._pos)&a.CLEAN_SESSION_MASK),this._pos++,u.keepalive=this._parseNum(),-1===u.keepalive)return this._emitError(new Error("Packet too short"));if(5===u.protocolVersion){var c=this._parseProperties();Object.getOwnPropertyNames(c).length&&(u.properties=c)}if(null===(t=this._parseString()))return this._emitError(new Error("Packet too short"));if(u.clientId=t,s.will){if(5===u.protocolVersion){var l=this._parseProperties();Object.getOwnPropertyNames(l).length&&(u.will.properties=l)}if(null===(r=this._parseString()))return this._emitError(new Error("Cannot parse will topic"));if(u.will.topic=r,null===(n=this._parseBuffer()))return this._emitError(new Error("Cannot parse will payload"));u.will.payload=n}if(s.username){if(null===(o=this._parseString()))return this._emitError(new Error("Cannot parse username"));u.username=o}if(s.password){if(null===(i=this._parseBuffer()))return this._emitError(new Error("Cannot parse password"));u.password=i}return this.settings=u,u},u.prototype._parseConnack=function(){var e=this.packet;if(this._list.length<2)return null;if(e.sessionPresent=!!(this._list.readUInt8(this._pos++)&a.SESSIONPRESENT_MASK),5===this.settings.protocolVersion?e.reasonCode=this._list.readUInt8(this._pos++):e.returnCode=this._list.readUInt8(this._pos++),-1===e.returnCode||-1===e.reasonCode)return this._emitError(new Error("Cannot parse return code"));if(5===this.settings.protocolVersion){var t=this._parseProperties();Object.getOwnPropertyNames(t).length&&(e.properties=t)}},u.prototype._parsePublish=function(){var e=this.packet;if(e.topic=this._parseString(),null===e.topic)return this._emitError(new Error("Cannot parse topic"));if(!(e.qos>0)||this._parseMessageId()){if(5===this.settings.protocolVersion){var t=this._parseProperties();Object.getOwnPropertyNames(t).length&&(e.properties=t)}e.payload=this._list.slice(this._pos,e.length)}},u.prototype._parseSubscribe=function(){var e,t,r,n,i,o,s,u=this.packet;if(1!==u.qos)return this._emitError(new Error("Wrong subscribe header"));if(u.subscriptions=[],this._parseMessageId()){if(5===this.settings.protocolVersion){var c=this._parseProperties();Object.getOwnPropertyNames(c).length&&(u.properties=c)}for(;this._pos<u.length;){if(null===(e=this._parseString()))return this._emitError(new Error("Cannot parse topic"));r=(t=this._parseByte())&a.SUBSCRIBE_OPTIONS_QOS_MASK,o=0!=(t>>a.SUBSCRIBE_OPTIONS_NL_SHIFT&a.SUBSCRIBE_OPTIONS_NL_MASK),i=0!=(t>>a.SUBSCRIBE_OPTIONS_RAP_SHIFT&a.SUBSCRIBE_OPTIONS_RAP_MASK),n=t>>a.SUBSCRIBE_OPTIONS_RH_SHIFT&a.SUBSCRIBE_OPTIONS_RH_MASK,s={topic:e,qos:r},5===this.settings.protocolVersion&&(s.nl=o,s.rap=i,s.rh=n),u.subscriptions.push(s)}}},u.prototype._parseSuback=function(){var e=this.packet;if(this.packet.granted=[],this._parseMessageId()){if(5===this.settings.protocolVersion){var t=this._parseProperties();Object.getOwnPropertyNames(t).length&&(e.properties=t)}for(;this._pos<this.packet.length;)this.packet.granted.push(this._list.readUInt8(this._pos++))}},u.prototype._parseUnsubscribe=function(){var e=this.packet;if(e.unsubscriptions=[],this._parseMessageId()){if(5===this.settings.protocolVersion){var t=this._parseProperties();Object.getOwnPropertyNames(t).length&&(e.properties=t)}for(;this._pos<e.length;){var r;if(null===(r=this._parseString()))return this._emitError(new Error("Cannot parse topic"));e.unsubscriptions.push(r)}}},u.prototype._parseUnsuback=function(){var e=this.packet;if(!this._parseMessageId())return this._emitError(new Error("Cannot parse messageId"));if(5===this.settings.protocolVersion){var t=this._parseProperties();for(Object.getOwnPropertyNames(t).length&&(e.properties=t),e.granted=[];this._pos<this.packet.length;)this.packet.granted.push(this._list.readUInt8(this._pos++))}},u.prototype._parseConfirmation=function(){var e=this.packet;if(this._parseMessageId(),5===this.settings.protocolVersion&&e.length>2){e.reasonCode=this._parseByte();var t=this._parseProperties();Object.getOwnPropertyNames(t).length&&(e.properties=t)}return!0},u.prototype._parseDisconnect=function(){var e=this.packet;if(5===this.settings.protocolVersion){e.reasonCode=this._parseByte();var t=this._parseProperties();Object.getOwnPropertyNames(t).length&&(e.properties=t)}return!0},u.prototype._parseAuth=function(){var e=this.packet;if(5!==this.settings.protocolVersion)return this._emitError(new Error("Not supported auth packet for this version MQTT"));e.reasonCode=this._parseByte();var t=this._parseProperties();return Object.getOwnPropertyNames(t).length&&(e.properties=t),!0},u.prototype._parseMessageId=function(){var e=this.packet;return e.messageId=this._parseNum(),null!==e.messageId||(this._emitError(new Error("Cannot parse messageId")),!1)},u.prototype._parseString=function(e){var t,r=this._parseNum(),n=r+this._pos;return-1===r||n>this._list.length||n>this.packet.length?null:(t=this._list.toString("utf8",this._pos,n),this._pos+=r,t)},u.prototype._parseStringPair=function(){return{name:this._parseString(),value:this._parseString()}},u.prototype._parseBuffer=function(){var e,t=this._parseNum(),r=t+this._pos;return-1===t||r>this._list.length||r>this.packet.length?null:(e=this._list.slice(this._pos,r),this._pos+=t,e)},u.prototype._parseNum=function(){if(this._list.length-this._pos<2)return-1;var e=this._list.readUInt16BE(this._pos);return this._pos+=2,e},u.prototype._parse4ByteNum=function(){if(this._list.length-this._pos<4)return-1;var e=this._list.readUInt32BE(this._pos);return this._pos+=4,e},u.prototype._parseVarByteNum=function(e){for(var t,r=0,n=1,i=0,o=!0,s=this._pos?this._pos:0;r<5&&(i+=n*((t=this._list.readUInt8(s+r++))&a.LENGTH_MASK),n*=128,0!=(t&a.LENGTH_FIN_MASK));)if(this._list.length<=r){o=!1;break}return s&&(this._pos+=r),o=!!o&&(e?{bytes:r,value:i}:i)},u.prototype._parseByte=function(){var e=this._list.readUInt8(this._pos);return this._pos++,e},u.prototype._parseByType=function(e){switch(e){case"byte":return 0!==this._parseByte();case"int8":return this._parseByte();case"int16":return this._parseNum();case"int32":return this._parse4ByteNum();case"var":return this._parseVarByteNum();case"string":return this._parseString();case"pair":return this._parseStringPair();case"binary":return this._parseBuffer()}},u.prototype._parseProperties=function(){for(var e=this._parseVarByteNum(),t=this._pos+e,r={};this._pos<t;){var n=this._parseByte(),i=a.propertiesCodes[n];if(!i)return this._emitError(new Error("Unknown property")),!1;if("userProperties"!==i)r[i]=this._parseByType(a.propertiesTypes[i]);else{r[i]||(r[i]={});var o=this._parseByType(a.propertiesTypes[i]);r[i][o.name]=o.value}}return r},u.prototype._newPacket=function(){return this.packet&&(this._list.consume(this.packet.length),this.emit("packet",this.packet)),this.packet=new s,this._pos=0,!0},u.prototype._emitError=function(e){this.error=e,this.emit("error",e)},t.exports=u},{"./constants":90,"./packet":95,bl:93,events:83,inherits:88}],97:[function(e,t,r){"use strict";var n=e("./constants"),i=e("safe-buffer").Buffer,o=i.allocUnsafe(0),s=i.from([0]),a=e("./numbers"),u=e("process-nextick-args").nextTick,c=a.cache,l=a.generateNumber,f=a.generateCache,p=a.genBufVariableByteInt,h=a.generate4ByteBuffer,d=S,g=!0;function b(e,t,r){switch(t.cork&&(t.cork(),u(y,t)),g&&(g=!1,f()),e.cmd){case"connect":return function(e,t,r){var o=e||{},s=o.protocolId||"MQTT",a=o.protocolVersion||4,u=o.will,c=o.clean,l=o.keepalive||0,f=o.clientId||"",p=o.username,h=o.password,g=o.properties;void 0===c&&(c=!0);var b=0;if(!s||"string"!=typeof s&&!i.isBuffer(s))return t.emit("error",new Error("Invalid protocolId")),!1;b+=s.length+2;if(3!==a&&4!==a&&5!==a)return t.emit("error",new Error("Invalid protocol version")),!1;b+=1;if("string"!=typeof f&&!i.isBuffer(f)||!f&&4!==a||!f&&!c){if(a<4)return t.emit("error",new Error("clientId must be supplied before 3.1.1")),!1;if(1*c==0)return t.emit("error",new Error("clientId must be given if cleanSession set to 0")),!1}else b+=f.length+2;if("number"!=typeof l||l<0||l>65535||l%1!=0)return t.emit("error",new Error("Invalid keepalive")),!1;b+=2;if(b+=1,5===a){var y=I(t,g);b+=y.length}if(u){if("object"!=typeof u)return t.emit("error",new Error("Invalid will")),!1;if(!u.topic||"string"!=typeof u.topic)return t.emit("error",new Error("Invalid will topic")),!1;if(b+=i.byteLength(u.topic)+2,u.payload){if(!(u.payload.length>=0))return t.emit("error",new Error("Invalid will payload")),!1;"string"==typeof u.payload?b+=i.byteLength(u.payload)+2:b+=u.payload.length+2;var m={};5===a&&(m=I(t,u.properties),b+=m.length)}}var w=!1;if(null!=p){if(!T(p))return t.emit("error",new Error("Invalid username")),!1;w=!0,b+=i.byteLength(p)+2}if(null!=h){if(!w)return t.emit("error",new Error("Username is required to use password")),!1;if(!T(h))return t.emit("error",new Error("Invalid password")),!1;b+=j(h)+2}t.write(n.CONNECT_HEADER),_(t,b),E(t,s),t.write(4===a?n.VERSION4:5===a?n.VERSION5:n.VERSION3);var S=0;S|=null!=p?n.USERNAME_MASK:0,S|=null!=h?n.PASSWORD_MASK:0,S|=u&&u.retain?n.WILL_RETAIN_MASK:0,S|=u&&u.qos?u.qos<<n.WILL_QOS_SHIFT:0,S|=u?n.WILL_FLAG_MASK:0,S|=c?n.CLEAN_SESSION_MASK:0,t.write(i.from([S])),d(t,l),5===a&&y.write();E(t,f),u&&(5===a&&m.write(),v(t,u.topic),E(t,u.payload));null!=p&&E(t,p);null!=h&&E(t,h);return!0}(e,t);case"connack":return function(e,t,r){var o=r?r.protocolVersion:4,a=e||{},u=5===o?a.reasonCode:a.returnCode,c=a.properties,l=2;if("number"!=typeof u)return t.emit("error",new Error("Invalid return code")),!1;var 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subscriptions - invalid qos")),!1;if(5===o){var y=c[h].nl||!1;if("boolean"!=typeof y)return t.emit("error",new Error("Invalid subscriptions - invalid No Local")),!1;var m=c[h].rap||!1;if("boolean"!=typeof m)return t.emit("error",new Error("Invalid subscriptions - invalid Retain as Published")),!1;var w=c[h].rh||0;if("number"!=typeof w||w>2)return t.emit("error",new Error("Invalid subscriptions - invalid Retain Handling")),!1}f+=i.byteLength(g)+2+1}t.write(n.SUBSCRIBE_HEADER[1][a?1:0][0]),_(t,f),d(t,u),null!==p&&p.write();for(var S=!0,x=0;x<c.length;x++){var k,E=c[x],C=E.topic,O=E.qos,j=+E.nl,T=+E.rap,A=E.rh;v(t,C),k=n.SUBSCRIBE_OPTIONS_QOS[O],5===o&&(k|=j?n.SUBSCRIBE_OPTIONS_NL:0,k|=T?n.SUBSCRIBE_OPTIONS_RAP:0,k|=A?n.SUBSCRIBE_OPTIONS_RH[A]:0),S=t.write(i.from([k]))}return S}(e,t,r);case"suback":return function(e,t,r){var o=r?r.protocolVersion:4,s=e||{},a=s.messageId,u=s.granted,c=s.properties,l=0;if("number"!=typeof a)return t.emit("error",new Error("Invalid 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