!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"),h=e("debug")("mqttjs:client"),p=r?r.nextTick:function(e){setTimeout(e,0)},d=n.setImmediate||function(e){p(e)},g={keepalive:60,reschedulePings:!0,protocolId:"MQTT",protocolVersion:4,reconnectPeriod:1e3,connectTimeout:3e4,clean:!0,resubscribe:!0},b=["ECONNREFUSED","EADDRINUSE","ECONNRESET","ENOTFOUND"],m={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){h("sendPacket :: packet: %O",t),h("sendPacket :: emitting `packetsend`"),e.emit("packetsend",t),h("sendPacket :: writing to stream");var n=s.writeToStream(t,e.stream,e.options);h("sendPacket :: writeToStream result %s",n),!n&&r?(h("sendPacket :: handle events on `drain` once through callback."),e.stream.once("drain",r)):r&&(h("sendPacket :: invoking cb"),r())}function _(e,t,r,n){h("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 w(e){h("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||{},g)void 0===this.options[r]?this.options[r]=g[r]:this.options[r]=t[r];h("MqttClient :: options.protocol",t.protocol),h("MqttClient :: options.protocolVersion",t.protocolVersion),h("MqttClient :: options.username",t.username),h("MqttClient :: options.keepalive",t.keepalive),h("MqttClient :: options.reconnectPeriod",t.reconnectPeriod),h("MqttClient :: options.rejectUnauthorized",t.rejectUnauthorized),this.options.clientId="string"==typeof t.clientId?t.clientId:"mqttjs_"+Math.random().toString(16).substr(2,8),h("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;h("connect :: sending queued packets"),function t(){var r=e.shift();h("deliver :: entry %o",r);var i;r&&(i=r.packet,h("deliver :: call _sendPacket for %o",i),n._sendPacket(i,function(e){r.cb&&r.cb(e),t()}))}()}),this.on("close",function(){h("close :: connected set to `false`"),this.connected=!1,h("close :: clearing connackTimer"),clearTimeout(this.connackTimer),h("close :: clearing ping timer"),null!==n.pingTimer&&(n.pingTimer.clear(),n.pingTimer=null),h("close :: calling _setupReconnect"),this._setupReconnect()}),i.call(this),h("MqttClient :: setting up stream"),this._setupStream()}u(v,i),v.prototype._setupStream=function(){var e,t=this,r=new a,n=s.parser(this.options),i=null,o=[];function u(){if(o.length)p(c);else{var e=i;i=null,e()}}function c(){h("work :: getting next packet in queue");var e=o.shift();if(e)h("work :: packet pulled from queue"),t._handlePacket(e,u);else{h("work :: no packets in queue");var r=i;i=null,h("work :: done flag is %s",!!r),r&&r()}}if(h("_setupStream :: calling method to clear reconnect"),this._clearReconnect(),h("_setupStream :: using streamBuilder provided to client to create stream"),this.stream=this.streamBuilder(this),n.on("packet",function(e){h("parser :: on packet push to packets array."),o.push(e)}),r._write=function(e,t,r){i=r,h("writable stream :: parsing buffer"),n.parse(e),c()},h("_setupStream :: pipe stream to writable stream"),this.stream.pipe(r),this.stream.on("error",function(e){h("streamErrorHandler :: error",e.message),b.includes(e.code)?(h("streamErrorHandler :: emitting error"),t.emit("error",e)):w(e)}),this.stream.on("close",function(){var e;h("(%s)stream :: on close",t.options.clientId),(e=t.outgoing)&&(h("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])})),h("stream: emit close to MqttClient"),t.emit("close")}),h("_setupStream: sending packet `connect`"),(e=Object.create(this.options)).cmd="connect",y(this,e),n.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(){h("!!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(h("_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;h("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),h("publish :: qos",r.qos),r.qos){case 1:case 2:this.outgoing[i.messageId]={volatile:!1,cb:n||w},this._storeProcessing?(h("_storeProcessing enabled"),this._packetIdsDuringStoreProcessing[i.messageId]=!1,this._storePacket(i,void 0,r.cbStorePut)):(h("MqttClient:publish: packet cmd: %s",i.cmd),this._sendPacket(i,void 0,r.cbStorePut));break;default:this._storeProcessing?(h("_storeProcessing enabled"),this._storePacket(i,n,r.cbStorePut)):(h("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()||w,u=t.pop(),c=this,p=this.options.protocolVersion;if(delete o.resubscribe,"string"==typeof o&&(o=[o]),"function"!=typeof a&&(u=a,a=w),null!==(n=l.validateTopics(o)))return d(a,new Error("Invalid topic "+n)),this;if(this._checkDisconnecting(a))return h("subscribe: discconecting true"),this;var g={qos:0};if(5===p&&(g.nl=!1,g.rap=!1,g.rh=0),u=f(g,u),Array.isArray(o)?o.forEach(function(e){if(h("subscribe: array topic %s",e),!c._resubscribeTopics.hasOwnProperty(e)||c._resubscribeTopics[e].qos<u.qos||s){var t={topic:e,qos:u.qos};5===p&&(t.nl=u.nl,t.rap=u.rap,t.rh=u.rh,t.properties=u.properties),h("subscribe: pushing topic `%s` and qos `%s` to subs list",t.topic,t.qos),i.push(t)}}):Object.keys(o).forEach(function(e){if(h("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===p&&(t.nl=o[e].nl,t.rap=o[e].rap,t.rh=o[e].rh,t.properties=u.properties),h("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){h("subscribe :: resubscribe true");var b=[];i.forEach(function(e){if(c.options.reconnectPeriod>0){var t={qos:e.qos};5===p&&(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)}},h("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()||w,s=r.pop();return"string"==typeof i&&(i=[i]),"function"!=typeof o&&(s=o,o=w),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},h("unsubscribe: call _sendPacket"),this._sendPacket(e),this)},v.prototype.end=function(e,t,r){var n=this;function i(){h("end :: (%s) :: finish :: calling _cleanUp with force %s",n.options.clientId,e),n._cleanUp(e,()=>{h("end :: finish :: calling process.nextTick on closeStores"),p(function(){h("end :: closeStores: closing incoming and outgoing stores"),n.disconnected=!0,n.incomingStore.close(function(e){n.outgoingStore.close(function(t){if(h("end :: closeStores: emitting end"),n.emit("end"),r){let n=e||t;h("end :: closeStores: invoking callback with args"),r(n)}})}),n._deferredReconnect&&n._deferredReconnect()}.bind(n))},t)}return h("end :: (%s)",this.options.clientId),null!=e&&"boolean"==typeof e||(r=t||w,t=e,e=!1,"object"!=typeof t&&(r=t,t=null,"function"!=typeof r&&(r=w))),"object"!=typeof t&&(r=t,t=null),h("end :: cb? %s",!!r),r=r||w,this.disconnecting?(r(),this):(this._clearReconnect(),this.disconnecting=!0,!e&&Object.keys(this.outgoing).length>0?(h("end :: (%s) :: calling finish in 10ms once outgoing is empty",n.options.clientId),this.once("outgoingEmpty",setTimeout.bind(null,i,10))):(h("end :: (%s) :: immediately calling finish",n.options.clientId),i()),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){h("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(){h("_reconnect: emitting reconnect to client"),this.emit("reconnect"),this.connected?(this.end(()=>{this._setupStream()}),h("client already connected. disconnecting first.")):(h("_reconnect: calling _setupStream"),this._setupStream())},v.prototype._setupReconnect=function(){var e=this;!e.disconnecting&&!e.reconnectTimer&&e.options.reconnectPeriod>0?(this.reconnecting||(h("_setupReconnect :: emit `offline` state"),this.emit("offline"),h("_setupReconnect :: set `reconnecting` to `true`"),this.reconnecting=!0),h("_setupReconnect :: setting reconnectTimer for %d ms",e.options.reconnectPeriod),e.reconnectTimer=setInterval(function(){h("reconnectTimer :: reconnect triggered!"),e._reconnect()},e.options.reconnectPeriod)):h("_setupReconnect :: doing nothing...")},v.prototype._clearReconnect=function(){h("_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&&(h("_cleanUp :: done callback provided for on stream close"),this.stream.on("close",t)),h("_cleanUp :: forced? %s",e),e)0===this.options.reconnectPeriod&&this.options.clean&&(r=this.outgoing)&&(h("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])})),h("_cleanUp :: (%s) :: destroying stream",this.options.clientId),this.stream.destroy();else{var i=f({cmd:"disconnect"},n);h("_cleanUp :: (%s) :: call _sendPacket with disconnect packet",this.options.clientId),this._sendPacket(i,d.bind(null,this.stream.end.bind(this.stream)))}this.disconnecting||(h("_cleanUp :: client not disconnecting. Clearing and resetting reconnect."),this._clearReconnect(),this._setupReconnect()),null!==this.pingTimer&&(h("_cleanUp :: clearing pingTimer"),this.pingTimer.clear(),this.pingTimer=null),t&&!this.connected&&(h("_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(h("_sendPacket :: (%s) ::  start",this.options.clientId),r=r||w,!this.connected)return h("_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 _(this,e,t,r);default:return void y(this,e,t)}switch(e.qos){case 2:case 1:_(this,e,t,r);break;case 0:default:y(this,e,t)}h("_sendPacket :: (%s) ::  end",this.options.clientId)},v.prototype._storePacket=function(e,t,r){h("_storePacket :: packet: %o",e),h("_storePacket :: cb? %s",!!t),r=r||w,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(){h("_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(){h("_checkPing :: checking ping..."),this.pingResp?(h("_checkPing :: ping response received. Clearing flag and sending `pingreq`"),this.pingResp=!1,this._sendPacket({cmd:"pingreq"})):(h("_checkPing :: calling _cleanUp with force true"),this._cleanUp(!0))},v.prototype._handlePingresp=function(){this.pingResp=!0},v.prototype._handleConnack=function(e){h("_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: "+m[r]);n.code=r,this.emit("error",n)}},v.prototype._handlePublish=function(e,t){h("_handlePublish: packet %o",e),t=void 0!==t?t:w;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(h("_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:h("_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(h("_handleAck :: packet type",n),n){case"pubcomp":case"puback":var a=e.reasonCode;a&&a>0&&16!==a&&((t=new Error("Publish error: "+m[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: "+m[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 h("_handleAck :: Server sent an ack in error. Ignoring.")},v.prototype._handlePubrel=function(e,t){h("handling pubrel packet"),t=void 0!==t?t:w;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,w),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){h("_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){h("_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:44,debug:14,events:27,inherits:29,"mqtt-packet":34,"readable-stream":63,reinterval:64,xtend:74}],2:[function(e,t,r){(function(r){"use strict";var n,i,o,s=e("readable-stream").Transform,a=e("duplexify"),u=!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("./writeToStream"),i=e("events");class o extends i{constructor(){super(),this._array=new Array(20),this._i=0}write(e){return this._array[this._i++]=e,!0}concat(){let e=0;const t=new Array(this._array.length),n=this._array;let i,o=0;for(i=0;i<n.length&&void 0!==n[i];i++)"string"!=typeof n[i]?t[i]=n[i].length:t[i]=r.byteLength(n[i]),e+=t[i];const s=r.allocUnsafe(e);for(i=0;i<n.length&&void 0!==n[i];i++)"string"!=typeof n[i]?(n[i].copy(s,o),o+=t[i]):(s.write(n[i],o),o+=t[i]);return s}}t.exports=function(e,t){const r=new o;return n(e,r,t),r.concat()}}).call(this,e("buffer").Buffer)},{"./writeToStream":40,buffer:12,events:27}],34:[function(e,t,r){r.parser=e("./parser").parser,r.generate=e("./generate"),r.writeToStream=e("./writeToStream")},{"./generate":33,"./parser":39,"./writeToStream":40}],35:[function(e,t,r){"use strict";const{Buffer:n}=e("buffer"),i=Symbol.for("BufferList");function o(e){if(!(this instanceof o))return new 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u=a,c=o&&t||0,l=s[1];if(0===r&&i===this.length){if(!o)return 1===this._bufs.length?this._bufs[0]:n.concat(this._bufs,this.length);for(let t=0;t<this._bufs.length;t++)this._bufs[t].copy(e,c),c+=this._bufs[t].length;return e}if(u<=this._bufs[s[0]].length-l)return o?this._bufs[s[0]].copy(e,t,l,l+u):this._bufs[s[0]].slice(l,l+u);o||(e=n.allocUnsafe(a));for(let t=s[0];t<this._bufs.length;t++){const r=this._bufs[t].length-l;if(!(u>r)){this._bufs[t].copy(e,c,l,l+u),c+=r;break}this._bufs[t].copy(e,c,l),c+=r,u-=r,l&&(l=0)}return e.length>c?e.slice(0,c):e},o.prototype.shallowSlice=function(e,t){if(e=e||0,t="number"!=typeof t?this.length:t,e<0&&(e+=this.length),t<0&&(t+=this.length),e===t)return this._new();const 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])),this._new(i)},o.prototype.toString=function(e,t,r){return this.slice(t,r).toString(e)},o.prototype.consume=function(e){if(e=Math.trunc(e),Number.isNaN(e)||e<=0)return this;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},o.prototype.duplicate=function(){const e=this._new();for(let t=0;t<this._bufs.length;t++)e.append(this._bufs[t]);return e},o.prototype.append=function(e){if(null==e)return this;if(e.buffer)this._appendBuffer(n.from(e.buffer,e.byteOffset,e.byteLength));else if(Array.isArray(e))for(let t=0;t<e.length;t++)this.append(e[t]);else if(this._isBufferList(e))for(let t=0;t<e._bufs.length;t++)this.append(e._bufs[t]);else"number"==typeof e&&(e=e.toString()),this._appendBuffer(n.from(e));return this},o.prototype._appendBuffer=function(e){this._bufs.push(e),this.length+=e.length},o.prototype.indexOf=function(e,t,r){if(void 0===r&&"string"==typeof t&&(r=t,t=void 0),"function"==typeof e||Array.isArray(e))throw new TypeError('The "value" argument must be one of type string, Buffer, BufferList, or Uint8Array.');if("number"==typeof e?e=n.from([e]):"string"==typeof e?e=n.from(e,r):this._isBufferList(e)?e=e.slice():Array.isArray(e.buffer)?e=n.from(e.buffer,e.byteOffset,e.byteLength):n.isBuffer(e)||(e=n.from(e)),t=Number(t||0),isNaN(t)&&(t=0),t<0&&(t=this.length+t),t<0&&(t=0),0===e.length)return t>this.length?this.length:t;const i=this._offset(t);let o=i[0],s=i[1];for(;o<this._bufs.length;o++){const t=this._bufs[o];for(;s<t.length;){if(t.length-s>=e.length){const r=t.indexOf(e,s);if(-1!==r)return this._reverseOffset([o,r]);s=t.length-e.length+1}else{const t=this._reverseOffset([o,s]);if(this._match(t,e))return t;s++}}s=0}return-1},o.prototype._match=function(e,t){if(this.length-e<t.length)return!1;for(let r=0;r<t.length;r++)if(this.get(e+r)!==t[r])return!1;return!0},function(){const 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,readIntBE:null,readIntLE:null,readUIntBE:null,readUIntLE:null};for(const t in e)!function(t){o.prototype[t]=null===e[t]?function(e,r){return this.slice(e,e+r)[t](0,r)}:function(r){return this.slice(r,r+e[t])[t](0)}}(t)}(),o.prototype._isBufferList=function(e){return e instanceof o||o.isBufferList(e)},o.isBufferList=function(e){return null!=e&&e[i]},t.exports=o},{buffer:12}],36:[function(e,t,r){"use strict";const n=e("readable-stream").Duplex,i=e("inherits"),o=e("./BufferList");function s(e){if(!(this instanceof s))return new s(e);if("function"==typeof e){this._callback=e;const 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)}),e=null}o._init.call(this,e),n.call(this)}i(s,n),Object.assign(s.prototype,o.prototype),s.prototype._new=function(e){return new s(e)},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._destroy=function(e,t){this._bufs.length=0,this.length=0,t(e)},s.prototype._isBufferList=function(e){return e instanceof s||e instanceof o||s.isBufferList(e)},s.isBufferList=o.isBufferList,t.exports=s,t.exports.BufferListStream=s,t.exports.BufferList=o},{"./BufferList":35,inherits:29,"readable-stream":63}],37:[function(e,t,r){(function(e){const r=65536,n={},i=e.isBuffer(e.from([1,2]).subarray(0,1));function o(t){const r=e.allocUnsafe(2);return r.writeUInt8(t>>8,0),r.writeUInt8(255&t,1),r}t.exports={cache:n,generateCache:function(){for(let e=0;e<r;e++)n[e]=o(e)},generateNumber:o,genBufVariableByteInt:function(t){let r=0,n=0;const o=e.allocUnsafe(4);do{r=t%128|0,(t=t/128|0)>0&&(r|=128),o.writeUInt8(r,n++)}while(t>0&&n<4);return t>0&&(n=0),i?o.subarray(0,n):o.slice(0,n)},generate4ByteBuffer:function(t){const r=e.allocUnsafe(4);return r.writeUInt32BE(t,0),r}}}).call(this,e("buffer").Buffer)},{buffer:12}],38:[function(e,t,r){t.exports=class{constructor(){this.cmd=null,this.retain=!1,this.qos=0,this.dup=!1,this.length=-1,this.topic=null,this.payload=null}}},{}],39:[function(e,t,r){const n=e("bl"),i=e("events"),o=e("./packet"),s=e("./constants"),a=e("debug")("mqtt-packet:parser");class u extends i{constructor(){super(),this.parser=this.constructor.parser}static parser(e){return this instanceof u?(this.settings=e||{},this._states=["_parseHeader","_parseLength","_parsePayload","_newPacket"],this._resetState(),this):(new u).parser(e)}_resetState(){a("_resetState: resetting packet, error, _list, and _stateCounter"),this.packet=new o,this.error=null,this._list=n(),this._stateCounter=0}parse(e){for(this.error&&this._resetState(),this._list.append(e),a("parse: current state: %s",this._states[this._stateCounter]);(-1!==this.packet.length||this._list.length>0)&&this[this._states[this._stateCounter]]()&&!this.error;)this._stateCounter++,a("parse: state complete. _stateCounter is now: %d",this._stateCounter),a("parse: packet.length: %d, buffer list length: %d",this.packet.length,this._list.length),this._stateCounter>=this._states.length&&(this._stateCounter=0);return a("parse: exited while loop. packet: %d, buffer list length: %d",this.packet.length,this._list.length),this._list.length}_parseHeader(){const e=this._list.readUInt8(0);return this.packet.cmd=s.types[e>>s.CMD_SHIFT],this.packet.retain=0!=(e&s.RETAIN_MASK),this.packet.qos=e>>s.QOS_SHIFT&s.QOS_MASK,this.packet.dup=0!=(e&s.DUP_MASK),a("_parseHeader: packet: %o",this.packet),this._list.consume(1),!0}_parseLength(){const e=this._parseVarByteNum(!0);return e?(this.packet.length=e.value,this._list.consume(e.bytes)):this._emitError(new Error("Invalid length")),a("_parseLength %d",e.value),!!e}_parsePayload(){a("_parsePayload: payload %O",this._list);let 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 a("_parsePayload complete result: %s",e),e}_parseConnect(){let e,t,r,n;a("_parseConnect");const i={},o=this.packet,u=this._parseString();if(null===u)return this._emitError(new Error("Cannot parse protocolId"));if("MQTT"!==u&&"MQIsdp"!==u)return this._emitError(new Error("Invalid protocolId"));if(o.protocolId=u,this._pos>=this._list.length)return this._emitError(new Error("Packet too short"));if(o.protocolVersion=this._list.readUInt8(this._pos),3!==o.protocolVersion&&4!==o.protocolVersion&&5!==o.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(i.username=this._list.readUInt8(this._pos)&s.USERNAME_MASK,i.password=this._list.readUInt8(this._pos)&s.PASSWORD_MASK,i.will=this._list.readUInt8(this._pos)&s.WILL_FLAG_MASK,i.will&&(o.will={},o.will.retain=0!=(this._list.readUInt8(this._pos)&s.WILL_RETAIN_MASK),o.will.qos=(this._list.readUInt8(this._pos)&s.WILL_QOS_MASK)>>s.WILL_QOS_SHIFT),o.clean=0!=(this._list.readUInt8(this._pos)&s.CLEAN_SESSION_MASK),this._pos++,o.keepalive=this._parseNum(),-1===o.keepalive)return this._emitError(new Error("Packet too short"));if(5===o.protocolVersion){const e=this._parseProperties();Object.getOwnPropertyNames(e).length&&(o.properties=e)}const c=this._parseString();if(null===c)return this._emitError(new Error("Packet too short"));if(o.clientId=c,a("_parseConnect: packet.clientId: %s",o.clientId),i.will){if(5===o.protocolVersion){const e=this._parseProperties();Object.getOwnPropertyNames(e).length&&(o.will.properties=e)}if(null===(e=this._parseString()))return this._emitError(new Error("Cannot parse will topic"));if(o.will.topic=e,a("_parseConnect: packet.will.topic: %s",o.will.topic),null===(t=this._parseBuffer()))return this._emitError(new Error("Cannot parse will payload"));o.will.payload=t,a("_parseConnect: packet.will.paylaod: %s",o.will.payload)}if(i.username){if(null===(n=this._parseString()))return this._emitError(new Error("Cannot parse username"));o.username=n,a("_parseConnect: packet.username: %s",o.username)}if(i.password){if(null===(r=this._parseBuffer()))return this._emitError(new Error("Cannot parse password"));o.password=r}return this.settings=o,a("_parseConnect: complete"),o}_parseConnack(){a("_parseConnack");const e=this.packet;if(this._list.length<2)return null;if(e.sessionPresent=!!(this._list.readUInt8(this._pos++)&s.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){const t=this._parseProperties();Object.getOwnPropertyNames(t).length&&(e.properties=t)}a("_parseConnack: complete")}_parsePublish(){a("_parsePublish");const 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){const t=this._parseProperties();Object.getOwnPropertyNames(t).length&&(e.properties=t)}e.payload=this._list.slice(this._pos,e.length),a("_parsePublish: payload from buffer list: %o",e.payload)}}_parseSubscribe(){a("_parseSubscribe");const e=this.packet;let t,r,n,i,o,u,c;if(1!==e.qos)return this._emitError(new Error("Wrong subscribe header"));if(e.subscriptions=[],this._parseMessageId()){if(5===this.settings.protocolVersion){const t=this._parseProperties();Object.getOwnPropertyNames(t).length&&(e.properties=t)}for(;this._pos<e.length;){if(null===(t=this._parseString()))return this._emitError(new Error("Cannot parse topic"));if(this._pos>=e.length)return this._emitError(new Error("Malformed Subscribe Payload"));n=(r=this._parseByte())&s.SUBSCRIBE_OPTIONS_QOS_MASK,u=0!=(r>>s.SUBSCRIBE_OPTIONS_NL_SHIFT&s.SUBSCRIBE_OPTIONS_NL_MASK),o=0!=(r>>s.SUBSCRIBE_OPTIONS_RAP_SHIFT&s.SUBSCRIBE_OPTIONS_RAP_MASK),i=r>>s.SUBSCRIBE_OPTIONS_RH_SHIFT&s.SUBSCRIBE_OPTIONS_RH_MASK,c={topic:t,qos:n},5===this.settings.protocolVersion&&(c.nl=u,c.rap=o,c.rh=i),a("_parseSubscribe: push subscription `%s` to subscription",c),e.subscriptions.push(c)}}}_parseSuback(){a("_parseSuback");const e=this.packet;if(this.packet.granted=[],this._parseMessageId()){if(5===this.settings.protocolVersion){const 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++))}}_parseUnsubscribe(){a("_parseUnsubscribe");const e=this.packet;if(e.unsubscriptions=[],this._parseMessageId()){if(5===this.settings.protocolVersion){const t=this._parseProperties();Object.getOwnPropertyNames(t).length&&(e.properties=t)}for(;this._pos<e.length;){const t=this._parseString();if(null===t)return this._emitError(new Error("Cannot parse topic"));a("_parseUnsubscribe: push topic `%s` to unsubscriptions",t),e.unsubscriptions.push(t)}}}_parseUnsuback(){a("_parseUnsuback");const e=this.packet;if(!this._parseMessageId())return this._emitError(new Error("Cannot parse messageId"));if(5===this.settings.protocolVersion){const 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++))}}_parseConfirmation(){a("_parseConfirmation: packet.cmd: `%s`",this.packet.cmd);const e=this.packet;if(this._parseMessageId(),5===this.settings.protocolVersion&&(e.length>2&&(e.reasonCode=this._parseByte(),a("_parseConfirmation: packet.reasonCode `%d`",e.reasonCode)),e.length>3)){const t=this._parseProperties();Object.getOwnPropertyNames(t).length&&(e.properties=t)}return!0}_parseDisconnect(){const e=this.packet;if(a("_parseDisconnect"),5===this.settings.protocolVersion){e.reasonCode=this._parseByte();const t=this._parseProperties();Object.getOwnPropertyNames(t).length&&(e.properties=t)}return a("_parseDisconnect result: true"),!0}_parseAuth(){a("_parseAuth");const 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();const t=this._parseProperties();return Object.getOwnPropertyNames(t).length&&(e.properties=t),a("_parseAuth: result: true"),!0}_parseMessageId(){const e=this.packet;return e.messageId=this._parseNum(),null===e.messageId?(this._emitError(new Error("Cannot parse messageId")),!1):(a("_parseMessageId: packet.messageId %d",e.messageId),!0)}_parseString(e){const t=this._parseNum(),r=t+this._pos;if(-1===t||r>this._list.length||r>this.packet.length)return null;const n=this._list.toString("utf8",this._pos,r);return this._pos+=t,a("_parseString: result: %s",n),n}_parseStringPair(){return a("_parseStringPair"),{name:this._parseString(),value:this._parseString()}}_parseBuffer(){const e=this._parseNum(),t=e+this._pos;if(-1===e||t>this._list.length||t>this.packet.length)return null;const r=this._list.slice(this._pos,t);return this._pos+=e,a("_parseBuffer: result: %o",r),r}_parseNum(){if(this._list.length-this._pos<2)return-1;const e=this._list.readUInt16BE(this._pos);return this._pos+=2,a("_parseNum: result: %s",e),e}_parse4ByteNum(){if(this._list.length-this._pos<4)return-1;const e=this._list.readUInt32BE(this._pos);return this._pos+=4,a("_parse4ByteNum: result: %s",e),e}_parseVarByteNum(e){a("_parseVarByteNum");let t,r=0,n=1,i=0,o=!1;const u=this._pos?this._pos:0;for(;r<5;){if(i+=n*((t=this._list.readUInt8(u+r++))&s.VARBYTEINT_MASK),n*=128,0==(t&s.VARBYTEINT_FIN_MASK)){o=!0;break}if(this._list.length<=r)break}return u&&(this._pos+=r),a("_parseVarByteNum: result: %o",o=!!o&&(e?{bytes:r,value:i}:i)),o}_parseByte(){const e=this._list.readUInt8(this._pos);return this._pos++,a("_parseByte: result: %o",e),e}_parseByType(e){switch(a("_parseByType: type: %s",e),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()}}_parseProperties(){a("_parseProperties");const e=this._parseVarByteNum(),t=this._pos+e,r={};for(;this._pos<t;){const e=this._parseByte(),t=s.propertiesCodes[e];if(!t)return this._emitError(new Error("Unknown property")),!1;if("userProperties"!==t)r[t]?Array.isArray(r[t])?r[t].push(this._parseByType(s.propertiesTypes[t])):(r[t]=[r[t]],r[t].push(this._parseByType(s.propertiesTypes[t]))):r[t]=this._parseByType(s.propertiesTypes[t]);else{r[t]||(r[t]=Object.create(null));const e=this._parseByType(s.propertiesTypes[t]);if(r[t][e.name])if(Array.isArray(r[t][e.name]))r[t][e.name].push(e.value);else{const n=r[t][e.name];r[t][e.name]=[n],r[t][e.name].push(e.value)}else r[t][e.name]=e.value}}return r}_newPacket(){return a("_newPacket"),this.packet&&(this._list.consume(this.packet.length),a("_newPacket: parser emit packet: packet.cmd: %s, packet.payload: %s, packet.length: %d",this.packet.cmd,this.packet.payload,this.packet.length),this.emit("packet",this.packet)),a("_newPacket: new packet"),this.packet=new o,this._pos=0,!0}_emitError(e){a("_emitError"),this.error=e,this.emit("error",e)}}t.exports=u},{"./constants":32,"./packet":38,bl:36,debug:14,events:27}],40:[function(e,t,r){(function(r){const n=e("./constants"),i=r.allocUnsafe(0),o=r.from([0]),s=e("./numbers"),a=e("process-nextick-args").nextTick,u=e("debug")("mqtt-packet:writeToStream"),c=s.cache,l=s.generateNumber,f=s.generateCache,h=s.genBufVariableByteInt,p=s.generate4ByteBuffer;let d=S,g=!0;function b(e,t,s){switch(u("generate called"),t.cork&&(t.cork(),a(m,t)),g&&(g=!1,f()),u("generate: packet.cmd: %s",e.cmd),e.cmd){case"connect":return function(e,t,i){const o=e||{},s=o.protocolId||"MQTT",a=o.protocolVersion||4,u=o.will;let c=o.clean;const l=o.keepalive||0,f=o.clientId||"",h=o.username,p=o.password,g=o.properties;void 0===c&&(c=!0);let b=0;if(!s||"string"!=typeof s&&!r.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&&!r.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 m=I(t,g);if(!m)return!1;b+=m.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+=r.byteLength(u.topic)+2,b+=2,u.payload){if(!(u.payload.length>=0))return t.emit("error",new Error("Invalid will payload")),!1;"string"==typeof u.payload?b+=r.byteLength(u.payload):b+=u.payload.length}var y={};if(5===a){if(!(y=I(t,u.properties)))return!1;b+=y.length}}let v=!1;if(null!=h){if(!A(h))return t.emit("error",new Error("Invalid username")),!1;v=!0,b+=r.byteLength(h)+2}if(null!=p){if(!v)return t.emit("error",new Error("Username is required to use password")),!1;if(!A(p))return t.emit("error",new Error("Invalid 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