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o=n(2).Buffer,s=n(24),a=n(5).EventEmitter;n(1)(i,a),i.prototype.write=function(e){return this._array[this._i++]=e,!0},i.prototype.concat=function(){var e,t,n=0,r=new Array(this._array.length),i=this._array,s=0;for(e=0;e<i.length&&void 0!==i[e];e++)"string"!=typeof i[e]?r[e]=i[e].length:r[e]=o.byteLength(i[e]),n+=r[e];for(t=o.allocUnsafe(n),e=0;e<i.length&&void 0!==i[e];e++)"string"!=typeof i[e]?(i[e].copy(t,s),s+=r[e]):(t.write(i[e],s),s+=r[e]);return t},e.exports=r},function(e,t,n){"use strict";t.parser=n(58),t.generate=n(53),t.writeToStream=n(24)},function(e,t,n){"use strict";(function(t){function n(e,n,r,i){if("function"!=typeof e)throw new TypeError('"callback" argument must be a function');var o,s,a=arguments.length;switch(a){case 0:case 1:return t.nextTick(e);case 2:return t.nextTick(function(){e.call(null,n)});case 3:return t.nextTick(function(){e.call(null,n,r)});case 4:return t.nextTick(function(){e.call(null,n,r,i)});default:for(o=new 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a,this.error=null,this._list=i(),this._stateCounter=0},r.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._states.length&&(this._stateCounter=0);return this._list.length},r.prototype._parseHeader=function(){var e=this._list.readUInt8(0);return this.packet.cmd=u.types[e>>u.CMD_SHIFT],this.packet.retain=0!=(e&u.RETAIN_MASK),this.packet.qos=e>>u.QOS_SHIFT&u.QOS_MASK,this.packet.dup=0!=(e&u.DUP_MASK),this._list.consume(1),!0},r.prototype._parseLength=function(){for(var e,t=0,n=1,r=0,i=!0;t<5&&(e=this._list.readUInt8(t++),r+=n*(e&u.LENGTH_MASK),n*=128,0!=(e&u.LENGTH_FIN_MASK));)if(this._list.length<=t){i=!1;break}return i&&(this.packet.length=r,this._list.consume(t)),i},r.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._parseMessageId();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":case"disconnect":break;default:this._emitError(new Error("Not supported"))}e=!0}return e},r.prototype._parseConnect=function(){var e,t,n,r,i,o,s={},a=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(a.protocolId=e,this._pos>=this._list.length)return this._emitError(new Error("Packet too short"));if(a.protocolVersion=this._list.readUInt8(this._pos),3!==a.protocolVersion&&4!==a.protocolVersion)return this._emitError(new Error("Invalid protocol version"));if(++this._pos>=this._list.length)return this._emitError(new Error("Packet too short"));if(s.username=this._list.readUInt8(this._pos)&u.USERNAME_MASK,s.password=this._list.readUInt8(this._pos)&u.PASSWORD_MASK,s.will=this._list.readUInt8(this._pos)&u.WILL_FLAG_MASK,s.will&&(a.will={},a.will.retain=0!=(this._list.readUInt8(this._pos)&u.WILL_RETAIN_MASK),a.will.qos=(this._list.readUInt8(this._pos)&u.WILL_QOS_MASK)>>u.WILL_QOS_SHIFT),a.clean=0!=(this._list.readUInt8(this._pos)&u.CLEAN_SESSION_MASK),this._pos++,a.keepalive=this._parseNum(),-1===a.keepalive)return this._emitError(new Error("Packet too short"));if(null===(t=this._parseString()))return this._emitError(new Error("Packet too short"));if(a.clientId=t,s.will){if(null===(n=this._parseString()))return this._emitError(new Error("Cannot parse will topic"));if(a.will.topic=n,null===(r=this._parseBuffer()))return this._emitError(new Error("Cannot parse will payload"));a.will.payload=r}if(s.username){if(null===(o=this._parseString()))return this._emitError(new Error("Cannot parse username"));a.username=o}if(s.password){if(null===(i=this._parseBuffer()))return this._emitError(new Error("Cannot parse password"));a.password=i}return a},r.prototype._parseConnack=function(){var e=this.packet;return this._list.length<2?null:(e.sessionPresent=!!(this._list.readUInt8(this._pos++)&u.SESSIONPRESENT_MASK),e.returnCode=this._list.readUInt8(this._pos),-1===e.returnCode?this._emitError(new Error("Cannot parse return code")):void 0)},r.prototype._parsePublish=function(){var e=this.packet;if(e.topic=this._parseString(),null===e.topic)return this._emitError(new Error("Cannot parse topic"));e.qos>0&&!this._parseMessageId()||(e.payload=this._list.slice(this._pos,e.length))},r.prototype._parseSubscribe=function(){var e,t,n=this.packet;if(1!==n.qos)return this._emitError(new Error("Wrong subscribe header"));if(n.subscriptions=[],this._parseMessageId())for(;this._pos<n.length;){if(null===(e=this._parseString()))return this._emitError(new Error("Cannot parse topic"));t=this._list.readUInt8(this._pos++),n.subscriptions.push({topic:e,qos:t})}},r.prototype._parseSuback=function(){if(this.packet.granted=[],this._parseMessageId())for(;this._pos<this.packet.length;)this.packet.granted.push(this._list.readUInt8(this._pos++))},r.prototype._parseUnsubscribe=function(){var e=this.packet;if(e.unsubscriptions=[],this._parseMessageId())for(;this._pos<e.length;){var t;if(null===(t=this._parseString()))return this._emitError(new Error("Cannot parse topic"));e.unsubscriptions.push(t)}},r.prototype._parseUnsuback=function(){if(!this._parseMessageId())return this._emitError(new Error("Cannot parse messageId"))},r.prototype._parseMessageId=function(){var e=this.packet;return e.messageId=this._parseNum(),null!==e.messageId||(this._emitError(new Error("Cannot parse messageId")),!1)},r.prototype._parseString=function(e){var t,n=this._parseNum(),r=n+this._pos;return-1===n||r>this._list.length||r>this.packet.length?null:(t=this._list.toString("utf8",this._pos,r),this._pos+=n,t)},r.prototype._parseBuffer=function(){var e,t=this._parseNum(),n=t+this._pos;return-1===t||n>this._list.length||n>this.packet.length?null:(e=this._list.slice(this._pos,n),this._pos+=t,e)},r.prototype._parseNum=function(){if(this._list.length-this._pos<2)return-1;var e=this._list.readUInt16BE(this._pos);return this._pos+=2,e},r.prototype._newPacket=function(){return this.packet&&(this._list.consume(this.packet.length),this.emit("packet",this.packet)),this.packet=new a,!0},r.prototype._emitError=function(e){this.error=e,this.emit("error",e)},e.exports=r},function(e,t,n){"use strict";(function(t,r){function i(){return"mqttjs_"+Math.random().toString(16).substr(2,8)}function o(e,t,n){e.emit("packetsend",t),!d.writeToStream(t,e.stream)&&n?e.stream.once("drain",n):n&&n()}function s(e){e&&Object.keys(e).forEach(function(t){"function"==typeof e[t]&&(e[t](new Error("Connection closed")),delete e[t])})}function a(e,t,n){e.outgoingStore.put(t,function(r){if(r)return n&&n(r);o(e,t,n)})}function u(){}function c(e,t){var n,r=this;if(!(this instanceof c))return new c(e,t);this.options=t||{};for(n in w)void 0===this.options[n]?this.options[n]=w[n]:this.options[n]=t[n];this.options.clientId="string"==typeof this.options.clientId?this.options.clientId:i(),this.streamBuilder=e,this.outgoingStore=this.options.outgoingStore||new l,this.incomingStore=this.options.incomingStore||new l,this.queueQoSZero=void 0===this.options.queueQoSZero||this.options.queueQoSZero,this._resubscribeTopics={},this.messageIdToTopic={},this.pingTimer=null,this.connected=!1,this.disconnecting=!1,this.queue=[],this.connackTimer=null,this.reconnectTimer=null,this.nextId=Math.max(1,Math.floor(65535*Math.random())),this.outgoing={},this.on("connect",function(){if(!this.disconnected){this.connected=!0;var e=null;e=this.outgoingStore.createStream(),e.once("readable",function(){function t(){var n,i=e.read(1);i&&(!r.disconnecting&&!r.reconnectTimer&&r.options.reconnectPeriod>0?(e.read(0),n=r.outgoing[i.messageId],r.outgoing[i.messageId]=function(e,r){n&&n(e,r),t()},r._sendPacket(i)):e.destroy&&e.destroy())}t()}).on("error",this.emit.bind(this,"error"))}}),this.on("close",function(){this.connected=!1,clearTimeout(this.connackTimer)}),this.on("connect",this._setupPingTimer),this.on("connect",function(){function e(){var n=t.shift(),i=null;n&&(i=n.packet,r._sendPacket(i,function(t){n.cb&&n.cb(t),e()}))}var t=this.queue;e()});var o=!0;this.on("connect",function(){!o&&this.options.clean&&Object.keys(this._resubscribeTopics).length>0&&(this.options.resubscribe?(this._resubscribeTopics.resubscribe=!0,this.subscribe(this._resubscribeTopics)):this._resubscribeTopics={}),o=!1}),this.on("close",function(){null!==r.pingTimer&&(r.pingTimer.clear(),r.pingTimer=null)}),this.on("close",this._setupReconnect),h.EventEmitter.call(this),this._setupStream()}var h=n(5),l=n(28),f=n(22),d=n(54),p=n(34).Writable,g=n(1),b=n(71),y=n(61),m=n(18),v=t.setImmediate||function(e){r.nextTick(e)},w={keepalive:60,reschedulePings:!0,protocolId:"MQTT",protocolVersion:4,reconnectPeriod:1e3,connectTimeout:3e4,clean:!0,resubscribe:!0};g(c,h.EventEmitter),c.prototype._setupStream=function(){function e(){r.nextTick(t)}function t(){var t=h.shift(),n=c;t?i._handlePacket(t,e):(c=null,n())}var n,i=this,s=new p,a=d.parser(this.options),c=null,h=[];this._clearReconnect(),this.stream=this.streamBuilder(this),a.on("packet",function(e){h.push(e)}),s._write=function(e,n,r){c=r,a.parse(e),t()},this.stream.pipe(s),this.stream.on("error",u),f(this.stream,this.emit.bind(this,"close")),n=Object.create(this.options),n.cmd="connect",o(this,n),a.on("error",this.emit.bind(this,"error")),this.stream.setMaxListeners(1e3),clearTimeout(this.connackTimer),this.connackTimer=setTimeout(function(){i._cleanUp(!0)},this.options.connectTimeout)},c.prototype._handlePacket=function(e,t){switch(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()}},c.prototype._checkDisconnecting=function(e){return this.disconnecting&&(e?e(new Error("client disconnecting")):this.emit("error",new Error("client disconnecting"))),this.disconnecting},c.prototype.publish=function(e,t,n,r){var i;if("function"==typeof n&&(r=n,n=null),n=m({qos:0,retain:!1,dup:!1},n),this._checkDisconnecting(r))return this;switch(i={cmd:"publish",topic:e,payload:t,qos:n.qos,retain:n.retain,messageId:this._nextId(),dup:n.dup},n.qos){case 1:case 2:this.outgoing[i.messageId]=r||u,this._sendPacket(i);break;default:this._sendPacket(i,r)}return this},c.prototype.subscribe=function(){var e,t,n=Array.prototype.slice.call(arguments),r=[],i=n.shift(),o=i.resubscribe,s=n.pop()||u,a=n.pop(),c=this;if(delete i.resubscribe,"string"==typeof i&&(i=[i]),"function"!=typeof s&&(a=s,s=u),null!==(t=y.validateTopics(i)))return v(s,new Error("Invalid topic "+t)),this;if(this._checkDisconnecting(s))return this;if(a=m({qos:0},a),Array.isArray(i)?i.forEach(function(e){(c._resubscribeTopics[e]<a.qos||!c._resubscribeTopics.hasOwnProperty(e)||o)&&r.push({topic:e,qos:a.qos})}):Object.keys(i).forEach(function(e){(c._resubscribeTopics[e]<i[e]||!c._resubscribeTopics.hasOwnProperty(e)||o)&&r.push({topic:e,qos:i[e]})}),e={cmd:"subscribe",subscriptions:r,qos:1,retain:!1,dup:!1,messageId:this._nextId()},!r.length)return void s(null,[]);if(this.options.resubscribe){var h=[];r.forEach(function(e){c.options.reconnectPeriod>0&&(c._resubscribeTopics[e.topic]=e.qos,h.push(e.topic))}),c.messageIdToTopic[e.messageId]=h}return this.outgoing[e.messageId]=function(e,t){if(!e)for(var n=t.granted,i=0;i<n.length;i+=1)r[i].qos=n[i];s(e,r)},this._sendPacket(e),this},c.prototype.unsubscribe=function(e,t){var n={cmd:"unsubscribe",qos:1,messageId:this._nextId()},r=this;return t=t||u,this._checkDisconnecting(t)?this:("string"==typeof e?n.unsubscriptions=[e]:"object"==typeof e&&e.length&&(n.unsubscriptions=e),this.options.resubscribe&&n.unsubscriptions.forEach(function(e){delete r._resubscribeTopics[e]}),this.outgoing[n.messageId]=t,this._sendPacket(n),this)},c.prototype.end=function(e,t){function n(){i.disconnected=!0,i.incomingStore.close(function(){i.outgoingStore.close(function(){t&&t.apply(null,arguments),i.emit("end")})}),i._deferredReconnect&&i._deferredReconnect()}function r(){i._cleanUp(e,v.bind(null,n))}var i=this;return"function"==typeof e&&(t=e,e=!1),this.disconnecting?this:(this._clearReconnect(),this.disconnecting=!0,!e&&Object.keys(this.outgoing).length>0?this.once("outgoingEmpty",setTimeout.bind(null,r,10)):r(),this)},c.prototype.removeOutgoingMessage=function(e){var t=this.outgoing[e];return delete this.outgoing[e],this.outgoingStore.del({messageId:e},function(){t(new Error("Message removed"))}),this},c.prototype.reconnect=function(e){var t=this,n=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 l,t.outgoingStore=t.options.outgoingStore||new l,t.disconnecting=!1,t.disconnected=!1,t._deferredReconnect=null,t._reconnect()};return this.disconnecting&&!this.disconnected?this._deferredReconnect=n:n(),this},c.prototype._reconnect=function(){this.emit("reconnect"),this._setupStream()},c.prototype._setupReconnect=function(){var e=this;!e.disconnecting&&!e.reconnectTimer&&e.options.reconnectPeriod>0&&(this.reconnecting||(this.emit("offline"),this.reconnecting=!0),e.reconnectTimer=setInterval(function(){e._reconnect()},e.options.reconnectPeriod))},c.prototype._clearReconnect=function(){this.reconnectTimer&&(clearInterval(this.reconnectTimer),this.reconnectTimer=null)},c.prototype._cleanUp=function(e,t){t&&this.stream.on("close",t),e?(0===this.options.reconnectPeriod&&this.options.clean&&s(this.outgoing),this.stream.destroy()):this._sendPacket({cmd:"disconnect"},v.bind(null,this.stream.end.bind(this.stream))),this.disconnecting||(this._clearReconnect(),this._setupReconnect()),null!==this.pingTimer&&(this.pingTimer.clear(),this.pingTimer=null),t&&!this.connected&&(this.stream.removeListener("close",t),t())},c.prototype._sendPacket=function(e,t){if(!this.connected)return 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