\n\n\n\n"
},
{
"path": "jmqtt-doc/docs/TEST_REPORT.md",
"content": "# Jmqtt 最新版功能及性能测试报告\n线上版连接：https://www.yuque.com/tristan-ku8np/zze/xghq80\n最新版链接：[https://github.com/Cicizz/jmqtt](https://github.com/Cicizz/jmqtt)\n\n# 一、目标\n\n1. 检测Jmqtt功能及性能运行情况\n1. 为使用者提供参考\n\n说明：以下测试为Jmqtt作者闲暇之时进行的测试，仅供参考，再线上使用Jmqtt时，请自行测试，感谢 朱霄 同学提供的服务器等测试资源\n\n# 二、测试机配置\n\n| | 数量 | 操作系统 | 配置 |\n| --------------- | ----------- | --------------- | ----------------------------- |\n| Jmqtt运行服务器 | 2台（集群） | linux centos 7 | 8C16G |\n| Jmqtt压测机 | 2台 | linux centos 7 | 8C16G |\n| Mysql | 单库单表 | mysql5.7 | 阿里云rds基础版：ESSD OL1云盘 |\n| SLB | 1 | 支持4层负载均衡 | 支持20万长连接 |\n\n测试脚本：\n\n1. jmeter\n1. emqx-bench\n\n# 三、功能测试报告\n\n| 功能项 | 是否满足 | 备注 |\n| --------------------------- | -------- | --------------------------------------------------------- |\n| 集群连接 | ✅ | |\n| 集群cleansession为false连接 | ✅ | |\n| 设备在集群互发消息 | ✅ | |\n| retain消息 | ✅ | |\n| will消息 | ✅ | |\n| qos0 | ✅ | |\n| qos1 | ✅ | |\n| qos2 | ✅ | |\n| 离线消息 | ✅ | 不限离线消息数量 |\n| 设备信息持久化 | ✅ | 见sql表：jmqtt_session |\n| 订阅关系持久化 | ✅ | 见sql表：jmqtt_subscription |\n| 消息持久化 | ✅ | 见sql表：jmqtt_message |\n| 集群事件消息 | ✅ | 包含集群间转发消息，连接事件，见sql表：jmqtt_cluser_event |\n| 设备消息接收状态 | ✅ | 见sql表：jmqtt_client_inbox |\n| 监控topic | ❎ | 不支持，需自行实现 |\n| 各个消息桥接 | ❎ | 不支持，需自行实现 |\n| 规则引擎 | ❎ | 不支持，需自行实现 |\n\n# 四、单机性能测试报告\n\n## 4.1 连接数性能报告\n\n连接数单机测试达到10W级连接，连接tps1000，未出现报错，\n注意：因测试机资源问题，未压测到上限。详细截图报告见下图\n\n### 4.1.1 连接数200，连接持续3min\n\n\n\n### 4.1.2 连接数1000，连接持续3min\n\n\n\n### 4.1.3 连接数2000，连接持续3min\n\n\n\n### 4.1.4 连接数5000，连接持续3min\n\n\n\n### 4.1.5 连接数1W，连接持续3min\n\n\n\n### 4.1.6 连接数2W，连接持续3min\n\n超过2W采用开源emqx-bench进行性能压测\n\n\n### 4.1.7 连接数5W，连接持续10min\n\n\n\n### 4.1.8 连接数10W，连接持续10min\n\n压到10W后，未持续压测，尚未压到连接数上限，两台测试机截图如下：\n\n服务器load截图：\n\n\n## 4.2 发送消息性能报告\n\n### 4.2.1 设备连接2W，再启动1000连接持续发送消息\n\n消息大小：256byte\nqos：0\n每隔10ms发送1条消息\n\n对比emq服务（没有2W长连接设备保持）：broker.emqx.io\n\n\n### 4.2.2 设备连接2W，再启动200连接持续发送消息\n\n消息大小：256byte\nqos：1\n每隔10ms发送1条消息\n\n\n### 4.2.3 设备连接2W，再启动200连接持续发送消息\n\n消息大小：100byte\nqos：1\n每隔10ms发送1条消息\n\n\n## 4.3 订阅性能报告\n\n### 4.3.1 启动2W个设备，订阅2W个topic\n\n###  \n\n# 五、集群性能测试报告\n\n## 5.1 连接数性能报告\n\nJmqtt服务器两台，设备连接数10W，未压测到上限\n\n\n## 5.2 发送消息性能报告\n\n发送消息强依赖db进行保存，性能瓶颈在db侧，故tps上不去\n\n### 5.2.1 设备连接2W，启动200连接持续发送消息\n\n消息大小：256byte\nqos：1\n\n\n### 5.2.2 设备连接2W，启动200连接持续发送消息\n\n消息大小：100byte\nqos：1\n\n\n## 5.3 订阅性能报告\n\n### 5.3.1 启动2W个设备，订阅2W个topic\n\n\n\n### 5.3.2 启动5W个设备，订阅5W个topic\n\n\n\n# 六、性能测试说明\n\n## 6.1 关于连接数\n\n1. 单机和集群都未压测到上线，受限于时间和测试机问题\n1. 实际使用时，单机连接数不要超过5w，方式服务器重启时，大量重连请求导致不可预知的问题\n\n## 6.2 关于消息发送tps\n\n1. 整体看消息tps与emq的测试服务器消息tps差不多\n1. 为什么集群tps上不去？\n 1. 因为消息保存强依赖mysql进行存储，mysql存储tps已达上限，这也是消息发送的可优化项\n\n## 6.3 关于订阅\n\n1. 目前订阅强依赖db存储，不存在订阅关系丢失的问题\n1. 本地采用tri树进行订阅关系的管理\n\n## 6.3 Jmqtt性能可优化项指南\n\n1. 升级mysql\n1. 集群事件转发器 用 mq替代（kafka或其他的mq都可以），减少集群服务器从db long pull的模式\n1. 消息存储采用其他存储中间件，例如时序数据库，甚至kafka都行\n\n# 七、测试常见问题\n\n## 7.1 测试机需要修改端口限制，否则无法启动5W长连接\n\nlinux centos7默认限制了端口可用范围，需要修改一下，不然连接数无法达到5w\n查看端口范围：cat /proc/sys/net/ipv4/ip_local_port_range\n\n## 7.2 jmqtt服务器需要修改文件句柄数\n\nlinux 万物皆文件，需要修改文件句柄数，否则无法支持那么大的长连接\nlinux默认为65535个文件句柄数，需要修改两个地方：\nulimit -n 和vim /etc/security/limits.conf\n\n## 7.3 jmqtt集群的负载均衡需要升级\n\nmqtt协议的复杂均衡需要4层的负载均衡代理，\n默认购买的SLB一般只支持5W长连接，故需要升级\n\n# 八、附：Jmqtt启动问题\n\n1. 目前jmqtt尽量减少各种依赖，代码简单，很容易进行二次开发和开箱即用\n1. 请使用最新发布版本或master 分支代码\n1. 建议从源码构建\n1. 本地启动，直接在BrokerStartup执行main方法\n\n## 8.1 结构介绍\n\n\n\n## 8.2 在db库中初始化好脚本\nt默认使用的是mysql驱动，依赖其他db需要自行修改\n\n1. 在自己的库中，执行jmqtt.sql\n1. 执行后如截图所示：\n\n\n\n## 8.3 打包\n\n在broker模块下，执行 ：mvn -Ppackage-all -DskipTests clean install -U \n打包后：\n\n\n## 8.4 修改配置文件\n\n如截图：这里修改为自己的db连接串\n\n\n## 8.5 上传资源到服务器\n\n1. 将jar，conf下的资源，bin下的脚本都上传到服务器：\n\n\n其中 config为conf下的配置文件\n\n2. 执行启动命令：./runbroker.sh jmqtt-broker-3.0.0.jar -h config/\n\n\n\n3. 查看启动日志：\n 1. cd jmqttlogs\n 1. tailf -200 brokerLog.log : 显示如下截图说明启动成功\n\n\n\n\njmqt\n"
},
{
"path": "jmqtt-doc/pom.xml",
"content": "\n\n\n \n jmqtt\n org.jmqtt\n 3.0.0\n \n 4.0.0\n\n jmqtt-doc\n\n jmqtt-doc\n\n\n \n\n \n\n \n\n \n\n"
},
{
"path": "jmqtt-example/pom.xml",
"content": "\n\n\n \n jmqtt\n org.jmqtt\n 3.0.0\n \n 4.0.0\n\n jmqtt-example\n jmqtt-example\n\n \n UTF-8\n 1.8\n 1.8\n \n\n \n \n org.eclipse.paho\n org.eclipse.paho.client.mqttv3\n 1.2.5\n \n \n\n"
},
{
"path": "jmqtt-example/src/main/java/org/jmqtt/java/Consumer.java",
"content": "package org.jmqtt.java;\n\nimport org.eclipse.paho.client.mqttv3.*;\nimport org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;\n\npublic class Consumer {\n private static final String broker = \"tcp://127.0.0.1:1883\";\n private static final String topic = \"MQTT/TOPIC\";\n private static final String clientId = \"MQTT_SUB_CLIENT\";\n\n public static void main(String[] args) throws MqttException {\n MqttClient subClient = getMqttClient();\n subClient.setCallback(new MqttCallback() {\n @Override\n public void connectionLost(Throwable throwable) {\n System.out.println(\"Connect lost,do some thing to solve it\");\n }\n\n @Override\n public void messageArrived(String s, MqttMessage mqttMessage) {\n System.out.println(\"From topic: \" + s);\n System.out.println(\"Message content: \" + new String(mqttMessage.getPayload()));\n }\n\n @Override\n public void deliveryComplete(IMqttDeliveryToken iMqttDeliveryToken) {\n System.out.println(\"deliveryComplete\");\n }\n\n });\n subClient.subscribe(topic);\n }\n\n\n private static MqttClient getMqttClient() {\n try {\n MqttClient pubClient = new MqttClient(broker, clientId, new MemoryPersistence());\n MqttConnectOptions connectOptions = new MqttConnectOptions();\n connectOptions.setCleanSession(false);\n System.out.println(\"Connecting to broker: \" + broker);\n pubClient.connect(connectOptions);\n return pubClient;\n } catch (MqttException e) {\n e.printStackTrace();\n }\n return null;\n }\n}\n"
},
{
"path": "jmqtt-example/src/main/java/org/jmqtt/java/Producer.java",
"content": "package org.jmqtt.java;\n\nimport org.eclipse.paho.client.mqttv3.MqttClient;\nimport org.eclipse.paho.client.mqttv3.MqttConnectOptions;\nimport org.eclipse.paho.client.mqttv3.MqttException;\nimport org.eclipse.paho.client.mqttv3.MqttMessage;\nimport org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;\n\npublic class Producer {\n private static final String broker = \"tcp://8.142.122.137:1883\";\n private static final String content = \"Message from MqttProducer\";\n private static final int qos = 1;\n private static final String topic = \"MQTT/TOPIC\";\n private static final String clientId = \"MQTT_PUB_CLIENT\";\n\n public static void main(String[] args) throws MqttException, InterruptedException {\n MqttClient pubClient = getMqttClient();\n for (int i = 0; i < 3; i++) {\n MqttMessage mqttMessage = getMqttMessage();\n pubClient.publish(topic, mqttMessage);\n System.out.println(\"Send message success.\");\n }\n }\n\n private static MqttMessage getMqttMessage() {\n MqttMessage mqttMessage = new MqttMessage(content.getBytes());\n mqttMessage.setQos(qos);\n return mqttMessage;\n }\n\n private static MqttClient getMqttClient() {\n try {\n MqttClient pubClient = new MqttClient(broker, clientId, new MemoryPersistence());\n MqttConnectOptions connectOptions = new MqttConnectOptions();\n connectOptions.setWill(\"lwt\", \"this is a will message\".getBytes(), 1, false);\n connectOptions.setCleanSession(false);\n System.out.println(\"Connecting to broker: \" + broker);\n pubClient.connect(connectOptions);\n return pubClient;\n } catch (MqttException e) {\n e.printStackTrace();\n }\n return null;\n }\n}\n"
},
{
"path": "jmqtt-example/src/main/java/org/jmqtt/websocket/paho-mqtt-min.js",
"content": "/*******************************************************************************\n * Copyright (c) 2013, 2014 IBM Corp.\n *\n * All rights reserved. This program and the accompanying materials\n * are made available under the terms of the Eclipse Public License v1.0\n * and Eclipse Distribution License v1.0 which accompany this distribution.\n *\n * The Eclipse Public License is available at\n * http://www.eclipse.org/legal/epl-v10.html\n * and the Eclipse Distribution License is available at\n * http://www.eclipse.org/org/documents/edl-v10.php.\n *\n *******************************************************************************/\n\n\"undefined\"===typeof Paho&&(Paho={});\nPaho.MQTT=function(u){function y(a,b,c){b[c++]=a>>8;b[c++]=a%256;return c}function r(a,b,c,h){h=y(b,c,h);F(a,c,h);return h+b}function m(a){for(var b=0,c=0;c=h&&(c++,b++),b+=3):127=e){var d=a.charCodeAt(++h);if(isNaN(d))throw Error(f(g.MALFORMED_UNICODE,[e,d]));e=(e-55296<<10)+(d-56320)+65536}127>=e?b[c++]=e:(2047>=e?b[c++]=e>>6&31|\n 192:(65535>=e?b[c++]=e>>12&15|224:(b[c++]=e>>18&7|240,b[c++]=e>>12&63|128),b[c++]=e>>6&63|128),b[c++]=e&63|128)}return b}function G(a,b,c){for(var h=\"\",e,d=b;de)){var p=a[d++]-128;if(0>p)throw Error(f(g.MALFORMED_UTF,[e.toString(16),p.toString(16),\"\"]));if(224>e)e=64*(e-192)+p;else{var t=a[d++]-128;if(0>t)throw Error(f(g.MALFORMED_UTF,[e.toString(16),p.toString(16),t.toString(16)]));if(240>e)e=4096*(e-224)+64*p+t;else{var l=a[d++]-128;if(0>l)throw Error(f(g.MALFORMED_UTF,\n [e.toString(16),p.toString(16),t.toString(16),l.toString(16)]));if(248>e)e=262144*(e-240)+4096*p+64*t+l;else throw Error(f(g.MALFORMED_UTF,[e.toString(16),p.toString(16),t.toString(16),l.toString(16)]));}}}65535>10)),e=56320+(e&1023));h+=String.fromCharCode(e)}return h}var A=function(a,b){for(var c in a)if(a.hasOwnProperty(c))if(b.hasOwnProperty(c)){if(typeof a[c]!==b[c])throw Error(f(g.INVALID_TYPE,[typeof a[c],c]));}else{var h=\"Unknown property, \"+c+\n \". Valid properties are:\";for(c in b)b.hasOwnProperty(c)&&(h=h+\" \"+c);throw Error(h);}},q=function(a,b){return function(){return a.apply(b,arguments)}},g={OK:{code:0,text:\"AMQJSC0000I OK.\"},CONNECT_TIMEOUT:{code:1,text:\"AMQJSC0001E Connect timed out.\"},SUBSCRIBE_TIMEOUT:{code:2,text:\"AMQJS0002E Subscribe timed out.\"},UNSUBSCRIBE_TIMEOUT:{code:3,text:\"AMQJS0003E Unsubscribe timed out.\"},PING_TIMEOUT:{code:4,text:\"AMQJS0004E Ping timed out.\"},INTERNAL_ERROR:{code:5,text:\"AMQJS0005E Internal error. Error Message: {0}, Stack trace: {1}\"},\n CONNACK_RETURNCODE:{code:6,text:\"AMQJS0006E Bad Connack return code:{0} {1}.\"},SOCKET_ERROR:{code:7,text:\"AMQJS0007E Socket error:{0}.\"},SOCKET_CLOSE:{code:8,text:\"AMQJS0008I Socket closed.\"},MALFORMED_UTF:{code:9,text:\"AMQJS0009E Malformed UTF data:{0} {1} {2}.\"},UNSUPPORTED:{code:10,text:\"AMQJS0010E {0} is not supported by this browser.\"},INVALID_STATE:{code:11,text:\"AMQJS0011E Invalid state {0}.\"},INVALID_TYPE:{code:12,text:\"AMQJS0012E Invalid type {0} for {1}.\"},INVALID_ARGUMENT:{code:13,text:\"AMQJS0013E Invalid argument {0} for {1}.\"},\n UNSUPPORTED_OPERATION:{code:14,text:\"AMQJS0014E Unsupported operation.\"},INVALID_STORED_DATA:{code:15,text:\"AMQJS0015E Invalid data in local storage key={0} value={1}.\"},INVALID_MQTT_MESSAGE_TYPE:{code:16,text:\"AMQJS0016E Invalid MQTT message type {0}.\"},MALFORMED_UNICODE:{code:17,text:\"AMQJS0017E Malformed Unicode string:{0} {1}.\"}},J={0:\"Connection Accepted\",1:\"Connection Refused: unacceptable protocol version\",2:\"Connection Refused: identifier rejected\",3:\"Connection Refused: server unavailable\",\n 4:\"Connection Refused: bad user name or password\",5:\"Connection Refused: not authorized\"},f=function(a,b){var c=a.text;if(b)for(var h,e,d=0;d>7;0l);f=d.length+1;b=new ArrayBuffer(b+f);l=new Uint8Array(b);\n l[0]=a;l.set(d,1);if(3==this.type)f=r(this.payloadMessage.destinationName,h,l,f);else if(1==this.type){switch(this.mqttVersion){case 3:l.set(B,f);f+=B.length;break;case 4:l.set(C,f),f+=C.length}a=0;this.cleanSession&&(a=2);void 0!=this.willMessage&&(a=a|4|this.willMessage.qos<<3,this.willMessage.retained&&(a|=32));void 0!=this.userName&&(a|=128);void 0!=this.password&&(a|=64);l[f++]=a;f=y(this.keepAliveInterval,l,f)}void 0!=this.messageIdentifier&&(f=y(this.messageIdentifier,l,f));switch(this.type){case 1:f=\n r(this.clientId,m(this.clientId),l,f);void 0!=this.willMessage&&(f=r(this.willMessage.destinationName,m(this.willMessage.destinationName),l,f),f=y(e.byteLength,l,f),l.set(e,f),f+=e.byteLength);void 0!=this.userName&&(f=r(this.userName,m(this.userName),l,f));void 0!=this.password&&r(this.password,m(this.password),l,f);break;case 3:l.set(g,f);break;case 8:for(d=0;dthis.connectOptions.mqttVersion?new WebSocket(a,[\"mqttv3.1\"]):new WebSocket(a,[\"mqtt\"]);this.socket.binaryType=\n \"arraybuffer\";this.socket.onopen=q(this._on_socket_open,this);this.socket.onmessage=q(this._on_socket_message,this);this.socket.onerror=q(this._on_socket_error,this);this.socket.onclose=q(this._on_socket_close,this);this.sendPinger=new H(this,window,this.connectOptions.keepAliveInterval);this.receivePinger=new H(this,window,this.connectOptions.keepAliveInterval);this._connectTimeout=new D(this,window,this.connectOptions.timeout,this._disconnected,[g.CONNECT_TIMEOUT.code,f(g.CONNECT_TIMEOUT)])};k.prototype._schedule_message=\n function(a){this._msg_queue.push(a);this.connected&&this._process_queue()};k.prototype.store=function(a,b){var c={type:b.type,messageIdentifier:b.messageIdentifier,version:1};switch(b.type){case 3:b.pubRecReceived&&(c.pubRecReceived=!0);c.payloadMessage={};for(var h=\"\",e=b.payloadMessage.payloadBytes,d=0;d=e[d]?h+\"0\"+e[d].toString(16):h+e[d].toString(16);c.payloadMessage.payloadHex=h;c.payloadMessage.qos=b.payloadMessage.qos;c.payloadMessage.destinationName=b.payloadMessage.destinationName;\n b.payloadMessage.duplicate&&(c.payloadMessage.duplicate=!0);b.payloadMessage.retained&&(c.payloadMessage.retained=!0);0==a.indexOf(\"Sent:\")&&(void 0===b.sequence&&(b.sequence=++this._sequence),c.sequence=b.sequence);break;default:throw Error(f(g.INVALID_STORED_DATA,[key,c]));}localStorage.setItem(a+this._localKey+b.messageIdentifier,JSON.stringify(c))};k.prototype.restore=function(a){var b=localStorage.getItem(a),c=JSON.parse(b),h=new n(c.type,c);switch(c.type){case 3:for(var b=c.payloadMessage.payloadHex,\n e=new ArrayBuffer(b.length/2),e=new Uint8Array(e),d=0;2<=b.length;){var k=parseInt(b.substring(0,2),16),b=b.substring(2,b.length);e[d++]=k}b=new Paho.MQTT.Message(e);b.qos=c.payloadMessage.qos;b.destinationName=c.payloadMessage.destinationName;c.payloadMessage.duplicate&&(b.duplicate=!0);c.payloadMessage.retained&&(b.retained=!0);h.payloadMessage=b;break;default:throw Error(f(g.INVALID_STORED_DATA,[a,b]));}0==a.indexOf(\"Sent:\"+this._localKey)?(h.payloadMessage.duplicate=!0,this._sentMessages[h.messageIdentifier]=\n h):0==a.indexOf(\"Received:\"+this._localKey)&&(this._receivedMessages[h.messageIdentifier]=h)};k.prototype._process_queue=function(){for(var a=null,b=this._msg_queue.reverse();a=b.pop();)this._socket_send(a),this._notify_msg_sent[a]&&(this._notify_msg_sent[a](),delete this._notify_msg_sent[a])};k.prototype._requires_ack=function(a){var b=Object.keys(this._sentMessages).length;if(b>this.maxMessageIdentifier)throw Error(\"Too many messages:\"+b);for(;void 0!==this._sentMessages[this._message_identifier];)this._message_identifier++;\n a.messageIdentifier=this._message_identifier;this._sentMessages[a.messageIdentifier]=a;3===a.type&&this.store(\"Sent:\",a);this._message_identifier===this.maxMessageIdentifier&&(this._message_identifier=1)};k.prototype._on_socket_open=function(){var a=new n(1,this.connectOptions);a.clientId=this.clientId;this._socket_send(a)};k.prototype._on_socket_message=function(a){this._trace(\"Client._on_socket_message\",a.data);this.receivePinger.reset();a=this._deframeMessages(a.data);for(var b=0;b>4,z=t&15,d=d+1,v=void 0,E=0,m=1;do{if(d==e.length){h=[null,k];break a}v=e[d++];E+=(v&127)*m;m*=128}while(0!=(v&128));v=d+E;if(v>e.length)h=[null,k];else{var w=new n(l);switch(l){case 2:e[d++]&\n 1&&(w.sessionPresent=!0);w.returnCode=e[d++];break;case 3:var k=z>>1&3,r=256*e[d]+e[d+1],d=d+2,u=G(e,d,r),d=d+r;0b)throw Error(f(g.INVALID_TYPE,[typeof b,\"port\"]));if(\"string\"!==typeof c)throw Error(f(g.INVALID_TYPE,[typeof c,\"path\"]));e=\"ws://\"+(-1!=a.indexOf(\":\")&&\"[\"!=a.slice(0,1)&&\"]\"!=a.slice(-1)?\"[\"+a+\"]\":a)+\":\"+b+c}for(var p=d=0;p=m&&p++;d++}if(\"string\"!==typeof h||65535a.mqttVersion)throw Error(f(g.INVALID_ARGUMENT,[a.mqttVersion,\"connectOptions.mqttVersion\"]));void 0===a.mqttVersion?(a.mqttVersionExplicit=!1,a.mqttVersion=4):a.mqttVersionExplicit=!0;if(void 0===a.password&&void 0!==a.userName)throw Error(f(g.INVALID_ARGUMENT,\n [a.password,\"connectOptions.password\"]));if(a.willMessage){if(!(a.willMessage instanceof x))throw Error(f(g.INVALID_TYPE,[a.willMessage,\"connectOptions.willMessage\"]));a.willMessage.stringPayload;if(\"undefined\"===typeof a.willMessage.destinationName)throw Error(f(g.INVALID_TYPE,[typeof a.willMessage.destinationName,\"connectOptions.willMessage.destinationName\"]));}\"undefined\"===typeof a.cleanSession&&(a.cleanSession=!0);if(a.hosts){if(!(a.hosts instanceof Array))throw Error(f(g.INVALID_ARGUMENT,[a.hosts,\n \"connectOptions.hosts\"]));if(1>a.hosts.length)throw Error(f(g.INVALID_ARGUMENT,[a.hosts,\"connectOptions.hosts\"]));for(var b=!1,d=0;da.ports[d])throw Error(f(g.INVALID_TYPE,[typeof a.ports[d],\"connectOptions.ports[\"+d+\"]\"]));var b=a.hosts[d],h=\n a.ports[d];e=\"ws://\"+(-1!=b.indexOf(\":\")?\"[\"+b+\"]\":b)+\":\"+h+c;a.uris.push(e)}}}l.connect(a)};this.subscribe=function(a,b){if(\"string\"!==typeof a)throw Error(\"Invalid argument:\"+a);b=b||{};A(b,{qos:\"number\",invocationContext:\"object\",onSuccess:\"function\",onFailure:\"function\",timeout:\"number\"});if(b.timeout&&!b.onFailure)throw Error(\"subscribeOptions.timeout specified with no onFailure callback.\");if(\"undefined\"!==typeof b.qos&&0!==b.qos&&1!==b.qos&&2!==b.qos)throw Error(f(g.INVALID_ARGUMENT,[b.qos,\n \"subscribeOptions.qos\"]));l.subscribe(a,b)};this.unsubscribe=function(a,b){if(\"string\"!==typeof a)throw Error(\"Invalid argument:\"+a);b=b||{};A(b,{invocationContext:\"object\",onSuccess:\"function\",onFailure:\"function\",timeout:\"number\"});if(b.timeout&&!b.onFailure)throw Error(\"unsubscribeOptions.timeout specified with no onFailure callback.\");l.unsubscribe(a,b)};this.send=function(a,b,c,d){var e;if(0==arguments.length)throw Error(\"Invalid argument.length\");if(1==arguments.length){if(!(a instanceof x)&&\n \"string\"!==typeof a)throw Error(\"Invalid argument:\"+typeof a);e=a;if(\"undefined\"===typeof e.destinationName)throw Error(f(g.INVALID_ARGUMENT,[e.destinationName,\"Message.destinationName\"]));}else e=new x(b),e.destinationName=a,3<=arguments.length&&(e.qos=c),4<=arguments.length&&(e.retained=d);l.send(e)};this.disconnect=function(){l.disconnect()};this.getTraceLog=function(){return l.getTraceLog()};this.startTrace=function(){l.startTrace()};this.stopTrace=function(){l.stopTrace()};this.isConnected=function(){return l.connected}};\n I.prototype={get host(){return this._getHost()},set host(a){this._setHost(a)},get port(){return this._getPort()},set port(a){this._setPort(a)},get path(){return this._getPath()},set path(a){this._setPath(a)},get clientId(){return this._getClientId()},set clientId(a){this._setClientId(a)},get onConnectionLost(){return this._getOnConnectionLost()},set onConnectionLost(a){this._setOnConnectionLost(a)},get onMessageDelivered(){return this._getOnMessageDelivered()},set onMessageDelivered(a){this._setOnMessageDelivered(a)},\n get onMessageArrived(){return this._getOnMessageArrived()},set onMessageArrived(a){this._setOnMessageArrived(a)},get trace(){return this._getTrace()},set trace(a){this._setTrace(a)}};var x=function(a){var b;if(\"string\"===typeof a||a instanceof ArrayBuffer||a instanceof Int8Array||a instanceof Uint8Array||a instanceof Int16Array||a instanceof Uint16Array||a instanceof Int32Array||a instanceof Uint32Array||a instanceof Float32Array||a instanceof Float64Array)b=a;else throw f(g.INVALID_ARGUMENT,[a,\"newPayload\"]);\n this._getPayloadString=function(){return\"string\"===typeof b?b:G(b,0,b.length)};this._getPayloadBytes=function(){if(\"string\"===typeof b){var a=new ArrayBuffer(m(b)),a=new Uint8Array(a);F(b,a,0);return a}return b};var c=void 0;this._getDestinationName=function(){return c};this._setDestinationName=function(a){if(\"string\"===typeof a)c=a;else throw Error(f(g.INVALID_ARGUMENT,[a,\"newDestinationName\"]));};var h=0;this._getQos=function(){return h};this._setQos=function(a){if(0===a||1===a||2===a)h=a;else throw Error(\"Invalid argument:\"+\n a);};var e=!1;this._getRetained=function(){return e};this._setRetained=function(a){if(\"boolean\"===typeof a)e=a;else throw Error(f(g.INVALID_ARGUMENT,[a,\"newRetained\"]));};var d=!1;this._getDuplicate=function(){return d};this._setDuplicate=function(a){d=a}};x.prototype={get payloadString(){return this._getPayloadString()},get payloadBytes(){return this._getPayloadBytes()},get destinationName(){return this._getDestinationName()},set destinationName(a){this._setDestinationName(a)},get qos(){return this._getQos()},\n set qos(a){this._setQos(a)},get retained(){return this._getRetained()},set retained(a){this._setRetained(a)},get duplicate(){return this._getDuplicate()},set duplicate(a){this._setDuplicate(a)}};return{Client:I,Message:x}}(window);\n"
},
{
"path": "jmqtt-example/src/main/java/org/jmqtt/websocket/paho-mqtt.js",
"content": "/*******************************************************************************\n * Copyright (c) 2013 IBM Corp.\n *\n * All rights reserved. This program and the accompanying materials\n * are made available under the terms of the Eclipse Public License v1.0\n * and Eclipse Distribution License v1.0 which accompany this distribution.\n *\n * The Eclipse Public License is available at\n * http://www.eclipse.org/legal/epl-v10.html\n * and the Eclipse Distribution License is available at\n * http://www.eclipse.org/org/documents/edl-v10.php.\n *\n * Contributors:\n * Andrew Banks - initial API and implementation and initial documentation\n *******************************************************************************/\n\n\n// Only expose a single object name in the global namespace.\n// Everything must go through this module. Global Paho.MQTT module\n// only has a single public function, client, which returns\n// a Paho.MQTT client object given connection details.\n\n/**\n * Send and receive messages using web browsers.\n *
\n * This programming interface lets a JavaScript client application use the MQTT V3.1 or\n * V3.1.1 protocol to connect to an MQTT-supporting messaging server.\n *\n * The function supported includes:\n *
\n *
Connecting to and disconnecting from a server. The server is identified by its host name and port number.\n *
Specifying options that relate to the communications link with the server,\n * for example the frequency of keep-alive heartbeats, and whether SSL/TLS is required.\n *
Subscribing to and receiving messages from MQTT Topics.\n *
Publishing messages to MQTT Topics.\n *
\n *
\n * The API consists of two main objects:\n *
\n *
{@link Paho.MQTT.Client}
\n *
This contains methods that provide the functionality of the API,\n * including provision of callbacks that notify the application when a message\n * arrives from or is delivered to the messaging server,\n * or when the status of its connection to the messaging server changes.
\n *
{@link Paho.MQTT.Message}
\n *
This encapsulates the payload of the message along with various attributes\n * associated with its delivery, in particular the destination to which it has\n * been (or is about to be) sent.
\n *
\n *
\n * The programming interface validates parameters passed to it, and will throw\n * an Error containing an error message intended for developer use, if it detects\n * an error with any parameter.\n *
\n * Example:\n *\n *
\n client = new Paho.MQTT.Client(location.hostname, Number(location.port), \"clientId\");\n client.onConnectionLost = onConnectionLost;\n client.onMessageArrived = onMessageArrived;\n client.connect({onSuccess:onConnect});\n\n function onConnect() {\n // Once a connection has been made, make a subscription and send a message.\n console.log(\"onConnect\");\n client.subscribe(\"/World\");\n message = new Paho.MQTT.Message(\"Hello\");\n message.destinationName = \"/World\";\n client.send(message);\n};\n function onConnectionLost(responseObject) {\n if (responseObject.errorCode !== 0)\n\tconsole.log(\"onConnectionLost:\"+responseObject.errorMessage);\n};\n function onMessageArrived(message) {\n console.log(\"onMessageArrived:\"+message.payloadString);\n client.disconnect();\n};\n *
\n * @namespace Paho.MQTT\n */\n\nif (typeof Paho === \"undefined\") {\n\tPaho = {};\n}\n\nPaho.MQTT = (function (global) {\n\n\t// Private variables below, these are only visible inside the function closure\n\t// which is used to define the module.\n\n\tvar version = \"@VERSION@\";\n\tvar buildLevel = \"@BUILDLEVEL@\";\n\n\t/**\n\t * Unique message type identifiers, with associated\n\t * associated integer values.\n\t * @private\n\t */\n\tvar MESSAGE_TYPE = {\n\t\tCONNECT: 1,\n\t\tCONNACK: 2,\n\t\tPUBLISH: 3,\n\t\tPUBACK: 4,\n\t\tPUBREC: 5,\n\t\tPUBREL: 6,\n\t\tPUBCOMP: 7,\n\t\tSUBSCRIBE: 8,\n\t\tSUBACK: 9,\n\t\tUNSUBSCRIBE: 10,\n\t\tUNSUBACK: 11,\n\t\tPINGREQ: 12,\n\t\tPINGRESP: 13,\n\t\tDISCONNECT: 14\n\t};\n\n\t// Collection of utility methods used to simplify module code\n\t// and promote the DRY pattern.\n\n\t/**\n\t * Validate an object's parameter names to ensure they\n\t * match a list of expected variables name for this option\n\t * type. Used to ensure option object passed into the API don't\n\t * contain erroneous parameters.\n\t * @param {Object} obj - User options object\n\t * @param {Object} keys - valid keys and types that may exist in obj.\n\t * @throws {Error} Invalid option parameter found.\n\t * @private\n\t */\n\tvar validate = function(obj, keys) {\n\t\tfor (var key in obj) {\n\t\t\tif (obj.hasOwnProperty(key)) {\n\t\t\t\tif (keys.hasOwnProperty(key)) {\n\t\t\t\t\tif (typeof obj[key] !== keys[key])\n\t\t\t\t\t\tthrow new Error(format(ERROR.INVALID_TYPE, [typeof obj[key], key]));\n\t\t\t\t} else {\n\t\t\t\t\tvar errorStr = \"Unknown property, \" + key + \". Valid properties are:\";\n\t\t\t\t\tfor (var key in keys)\n\t\t\t\t\t\tif (keys.hasOwnProperty(key))\n\t\t\t\t\t\t\terrorStr = errorStr+\" \"+key;\n\t\t\t\t\tthrow new Error(errorStr);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t};\n\n\t/**\n\t * Return a new function which runs the user function bound\n\t * to a fixed scope.\n\t * @param {function} User function\n\t * @param {object} Function scope\n\t * @return {function} User function bound to another scope\n\t * @private\n\t */\n\tvar scope = function (f, scope) {\n\t\treturn function () {\n\t\t\treturn f.apply(scope, arguments);\n\t\t};\n\t};\n\n\t/**\n\t * Unique message type identifiers, with associated\n\t * associated integer values.\n\t * @private\n\t */\n\tvar ERROR = {\n\t\tOK: {code:0, text:\"AMQJSC0000I OK.\"},\n\t\tCONNECT_TIMEOUT: {code:1, text:\"AMQJSC0001E Connect timed out.\"},\n\t\tSUBSCRIBE_TIMEOUT: {code:2, text:\"AMQJS0002E Subscribe timed out.\"},\n\t\tUNSUBSCRIBE_TIMEOUT: {code:3, text:\"AMQJS0003E Unsubscribe timed out.\"},\n\t\tPING_TIMEOUT: {code:4, text:\"AMQJS0004E Ping timed out.\"},\n\t\tINTERNAL_ERROR: {code:5, text:\"AMQJS0005E Internal error. Error Message: {0}, Stack trace: {1}\"},\n\t\tCONNACK_RETURNCODE: {code:6, text:\"AMQJS0006E Bad Connack return code:{0} {1}.\"},\n\t\tSOCKET_ERROR: {code:7, text:\"AMQJS0007E Socket error:{0}.\"},\n\t\tSOCKET_CLOSE: {code:8, text:\"AMQJS0008I Socket closed.\"},\n\t\tMALFORMED_UTF: {code:9, text:\"AMQJS0009E Malformed UTF data:{0} {1} {2}.\"},\n\t\tUNSUPPORTED: {code:10, text:\"AMQJS0010E {0} is not supported by this browser.\"},\n\t\tINVALID_STATE: {code:11, text:\"AMQJS0011E Invalid state {0}.\"},\n\t\tINVALID_TYPE: {code:12, text:\"AMQJS0012E Invalid type {0} for {1}.\"},\n\t\tINVALID_ARGUMENT: {code:13, text:\"AMQJS0013E Invalid argument {0} for {1}.\"},\n\t\tUNSUPPORTED_OPERATION: {code:14, text:\"AMQJS0014E Unsupported operation.\"},\n\t\tINVALID_STORED_DATA: {code:15, text:\"AMQJS0015E Invalid data in local storage key={0} value={1}.\"},\n\t\tINVALID_MQTT_MESSAGE_TYPE: {code:16, text:\"AMQJS0016E Invalid MQTT message type {0}.\"},\n\t\tMALFORMED_UNICODE: {code:17, text:\"AMQJS0017E Malformed Unicode string:{0} {1}.\"},\n\t};\n\n\t/** CONNACK RC Meaning. */\n\tvar CONNACK_RC = {\n\t\t0:\"Connection Accepted\",\n\t\t1:\"Connection Refused: unacceptable protocol version\",\n\t\t2:\"Connection Refused: identifier rejected\",\n\t\t3:\"Connection Refused: server unavailable\",\n\t\t4:\"Connection Refused: bad user name or password\",\n\t\t5:\"Connection Refused: not authorized\"\n\t};\n\n\t/**\n\t * Format an error message text.\n\t * @private\n\t * @param {error} ERROR.KEY value above.\n\t * @param {substitutions} [array] substituted into the text.\n\t * @return the text with the substitutions made.\n\t */\n\tvar format = function(error, substitutions) {\n\t\tvar text = error.text;\n\t\tif (substitutions) {\n\t\t\tvar field,start;\n\t\t\tfor (var i=0; i 0) {\n\t\t\t\t\tvar part1 = text.substring(0,start);\n\t\t\t\t\tvar part2 = text.substring(start+field.length);\n\t\t\t\t\ttext = part1+substitutions[i]+part2;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\treturn text;\n\t};\n\n\t//MQTT protocol and version 6 M Q I s d p 3\n\tvar MqttProtoIdentifierv3 = [0x00,0x06,0x4d,0x51,0x49,0x73,0x64,0x70,0x03];\n\t//MQTT proto/version for 311 4 M Q T T 4\n\tvar MqttProtoIdentifierv4 = [0x00,0x04,0x4d,0x51,0x54,0x54,0x04];\n\n\t/**\n\t * Construct an MQTT wire protocol message.\n\t * @param type MQTT packet type.\n\t * @param options optional wire message attributes.\n\t *\n\t * Optional properties\n\t *\n\t * messageIdentifier: message ID in the range [0..65535]\n\t * payloadMessage:\tApplication Message - PUBLISH only\n\t * connectStrings:\tarray of 0 or more Strings to be put into the CONNECT payload\n\t * topics:\t\t\tarray of strings (SUBSCRIBE, UNSUBSCRIBE)\n\t * requestQoS:\t\tarray of QoS values [0..2]\n\t *\n\t * \"Flag\" properties\n\t * cleanSession:\ttrue if present / false if absent (CONNECT)\n\t * willMessage: \ttrue if present / false if absent (CONNECT)\n\t * isRetained:\t\ttrue if present / false if absent (CONNECT)\n\t * userName:\t\ttrue if present / false if absent (CONNECT)\n\t * password:\t\ttrue if present / false if absent (CONNECT)\n\t * keepAliveInterval:\tinteger [0..65535] (CONNECT)\n\t *\n\t * @private\n\t * @ignore\n\t */\n\tvar WireMessage = function (type, options) {\n\t\tthis.type = type;\n\t\tfor (var name in options) {\n\t\t\tif (options.hasOwnProperty(name)) {\n\t\t\t\tthis[name] = options[name];\n\t\t\t}\n\t\t}\n\t};\n\n\tWireMessage.prototype.encode = function() {\n\t\t// Compute the first byte of the fixed header\n\t\tvar first = ((this.type & 0x0f) << 4);\n\n\t\t/*\n\t\t * Now calculate the length of the variable header + payload by adding up the lengths\n\t\t * of all the component parts\n\t\t */\n\n\t\tvar remLength = 0;\n\t\tvar topicStrLength = new Array();\n\t\tvar destinationNameLength = 0;\n\n\t\t// if the message contains a messageIdentifier then we need two bytes for that\n\t\tif (this.messageIdentifier != undefined)\n\t\t\tremLength += 2;\n\n\t\tswitch(this.type) {\n\t\t\t// If this a Connect then we need to include 12 bytes for its header\n\t\t\tcase MESSAGE_TYPE.CONNECT:\n\t\t\t\tswitch(this.mqttVersion) {\n\t\t\t\t\tcase 3:\n\t\t\t\t\t\tremLength += MqttProtoIdentifierv3.length + 3;\n\t\t\t\t\t\tbreak;\n\t\t\t\t\tcase 4:\n\t\t\t\t\t\tremLength += MqttProtoIdentifierv4.length + 3;\n\t\t\t\t\t\tbreak;\n\t\t\t\t}\n\n\t\t\t\tremLength += UTF8Length(this.clientId) + 2;\n\t\t\t\tif (this.willMessage != undefined) {\n\t\t\t\t\tremLength += UTF8Length(this.willMessage.destinationName) + 2;\n\t\t\t\t\t// Will message is always a string, sent as UTF-8 characters with a preceding length.\n\t\t\t\t\tvar willMessagePayloadBytes = this.willMessage.payloadBytes;\n\t\t\t\t\tif (!(willMessagePayloadBytes instanceof Uint8Array))\n\t\t\t\t\t\twillMessagePayloadBytes = new Uint8Array(payloadBytes);\n\t\t\t\t\tremLength += willMessagePayloadBytes.byteLength +2;\n\t\t\t\t}\n\t\t\t\tif (this.userName != undefined)\n\t\t\t\t\tremLength += UTF8Length(this.userName) + 2;\n\t\t\t\tif (this.password != undefined)\n\t\t\t\t\tremLength += UTF8Length(this.password) + 2;\n\t\t\t\tbreak;\n\n\t\t\t// Subscribe, Unsubscribe can both contain topic strings\n\t\t\tcase MESSAGE_TYPE.SUBSCRIBE:\n\t\t\t\tfirst |= 0x02; // Qos = 1;\n\t\t\t\tfor ( var i = 0; i < this.topics.length; i++) {\n\t\t\t\t\ttopicStrLength[i] = UTF8Length(this.topics[i]);\n\t\t\t\t\tremLength += topicStrLength[i] + 2;\n\t\t\t\t}\n\t\t\t\tremLength += this.requestedQos.length; // 1 byte for each topic's Qos\n\t\t\t\t// QoS on Subscribe only\n\t\t\t\tbreak;\n\n\t\t\tcase MESSAGE_TYPE.UNSUBSCRIBE:\n\t\t\t\tfirst |= 0x02; // Qos = 1;\n\t\t\t\tfor ( var i = 0; i < this.topics.length; i++) {\n\t\t\t\t\ttopicStrLength[i] = UTF8Length(this.topics[i]);\n\t\t\t\t\tremLength += topicStrLength[i] + 2;\n\t\t\t\t}\n\t\t\t\tbreak;\n\n\t\t\tcase MESSAGE_TYPE.PUBREL:\n\t\t\t\tfirst |= 0x02; // Qos = 1;\n\t\t\t\tbreak;\n\n\t\t\tcase MESSAGE_TYPE.PUBLISH:\n\t\t\t\tif (this.payloadMessage.duplicate) first |= 0x08;\n\t\t\t\tfirst = first |= (this.payloadMessage.qos << 1);\n\t\t\t\tif (this.payloadMessage.retained) first |= 0x01;\n\t\t\t\tdestinationNameLength = UTF8Length(this.payloadMessage.destinationName);\n\t\t\t\tremLength += destinationNameLength + 2;\n\t\t\t\tvar payloadBytes = this.payloadMessage.payloadBytes;\n\t\t\t\tremLength += payloadBytes.byteLength;\n\t\t\t\tif (payloadBytes instanceof ArrayBuffer)\n\t\t\t\t\tpayloadBytes = new Uint8Array(payloadBytes);\n\t\t\t\telse if (!(payloadBytes instanceof Uint8Array))\n\t\t\t\t\tpayloadBytes = new Uint8Array(payloadBytes.buffer);\n\t\t\t\tbreak;\n\n\t\t\tcase MESSAGE_TYPE.DISCONNECT:\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\t\t\t\t;\n\t\t}\n\n\t\t// Now we can allocate a buffer for the message\n\n\t\tvar mbi = encodeMBI(remLength); // Convert the length to MQTT MBI format\n\t\tvar pos = mbi.length + 1; // Offset of start of variable header\n\t\tvar buffer = new ArrayBuffer(remLength + pos);\n\t\tvar byteStream = new Uint8Array(buffer); // view it as a sequence of bytes\n\n\t\t//Write the fixed header into the buffer\n\t\tbyteStream[0] = first;\n\t\tbyteStream.set(mbi,1);\n\n\t\t// If this is a PUBLISH then the variable header starts with a topic\n\t\tif (this.type == MESSAGE_TYPE.PUBLISH)\n\t\t\tpos = writeString(this.payloadMessage.destinationName, destinationNameLength, byteStream, pos);\n\t\t// If this is a CONNECT then the variable header contains the protocol name/version, flags and keepalive time\n\n\t\telse if (this.type == MESSAGE_TYPE.CONNECT) {\n\t\t\tswitch (this.mqttVersion) {\n\t\t\t\tcase 3:\n\t\t\t\t\tbyteStream.set(MqttProtoIdentifierv3, pos);\n\t\t\t\t\tpos += MqttProtoIdentifierv3.length;\n\t\t\t\t\tbreak;\n\t\t\t\tcase 4:\n\t\t\t\t\tbyteStream.set(MqttProtoIdentifierv4, pos);\n\t\t\t\t\tpos += MqttProtoIdentifierv4.length;\n\t\t\t\t\tbreak;\n\t\t\t}\n\t\t\tvar connectFlags = 0;\n\t\t\tif (this.cleanSession)\n\t\t\t\tconnectFlags = 0x02;\n\t\t\tif (this.willMessage != undefined ) {\n\t\t\t\tconnectFlags |= 0x04;\n\t\t\t\tconnectFlags |= (this.willMessage.qos<<3);\n\t\t\t\tif (this.willMessage.retained) {\n\t\t\t\t\tconnectFlags |= 0x20;\n\t\t\t\t}\n\t\t\t}\n\t\t\tif (this.userName != undefined)\n\t\t\t\tconnectFlags |= 0x80;\n\t\t\tif (this.password != undefined)\n\t\t\t\tconnectFlags |= 0x40;\n\t\t\tbyteStream[pos++] = connectFlags;\n\t\t\tpos = writeUint16 (this.keepAliveInterval, byteStream, pos);\n\t\t}\n\n\t\t// Output the messageIdentifier - if there is one\n\t\tif (this.messageIdentifier != undefined)\n\t\t\tpos = writeUint16 (this.messageIdentifier, byteStream, pos);\n\n\t\tswitch(this.type) {\n\t\t\tcase MESSAGE_TYPE.CONNECT:\n\t\t\t\tpos = writeString(this.clientId, UTF8Length(this.clientId), byteStream, pos);\n\t\t\t\tif (this.willMessage != undefined) {\n\t\t\t\t\tpos = writeString(this.willMessage.destinationName, UTF8Length(this.willMessage.destinationName), byteStream, pos);\n\t\t\t\t\tpos = writeUint16(willMessagePayloadBytes.byteLength, byteStream, pos);\n\t\t\t\t\tbyteStream.set(willMessagePayloadBytes, pos);\n\t\t\t\t\tpos += willMessagePayloadBytes.byteLength;\n\n\t\t\t\t}\n\t\t\t\tif (this.userName != undefined)\n\t\t\t\t\tpos = writeString(this.userName, UTF8Length(this.userName), byteStream, pos);\n\t\t\t\tif (this.password != undefined)\n\t\t\t\t\tpos = writeString(this.password, UTF8Length(this.password), byteStream, pos);\n\t\t\t\tbreak;\n\n\t\t\tcase MESSAGE_TYPE.PUBLISH:\n\t\t\t\t// PUBLISH has a text or binary payload, if text do not add a 2 byte length field, just the UTF characters.\n\t\t\t\tbyteStream.set(payloadBytes, pos);\n\n\t\t\t\tbreak;\n\n// \t case MESSAGE_TYPE.PUBREC:\n// \t case MESSAGE_TYPE.PUBREL:\n// \t case MESSAGE_TYPE.PUBCOMP:\n// \t \tbreak;\n\n\t\t\tcase MESSAGE_TYPE.SUBSCRIBE:\n\t\t\t\t// SUBSCRIBE has a list of topic strings and request QoS\n\t\t\t\tfor (var i=0; i> 4;\n\t\tvar messageInfo = first &= 0x0f;\n\t\tpos += 1;\n\n\n\t\t// Decode the remaining length (MBI format)\n\n\t\tvar digit;\n\t\tvar remLength = 0;\n\t\tvar multiplier = 1;\n\t\tdo {\n\t\t\tif (pos == input.length) {\n\t\t\t\treturn [null,startingPos];\n\t\t\t}\n\t\t\tdigit = input[pos++];\n\t\t\tremLength += ((digit & 0x7F) * multiplier);\n\t\t\tmultiplier *= 128;\n\t\t} while ((digit & 0x80) != 0);\n\n\t\tvar endPos = pos+remLength;\n\t\tif (endPos > input.length) {\n\t\t\treturn [null,startingPos];\n\t\t}\n\n\t\tvar wireMessage = new WireMessage(type);\n\t\tswitch(type) {\n\t\t\tcase MESSAGE_TYPE.CONNACK:\n\t\t\t\tvar connectAcknowledgeFlags = input[pos++];\n\t\t\t\tif (connectAcknowledgeFlags & 0x01)\n\t\t\t\t\twireMessage.sessionPresent = true;\n\t\t\t\twireMessage.returnCode = input[pos++];\n\t\t\t\tbreak;\n\n\t\t\tcase MESSAGE_TYPE.PUBLISH:\n\t\t\t\tvar qos = (messageInfo >> 1) & 0x03;\n\n\t\t\t\tvar len = readUint16(input, pos);\n\t\t\t\tpos += 2;\n\t\t\t\tvar topicName = parseUTF8(input, pos, len);\n\t\t\t\tpos += len;\n\t\t\t\t// If QoS 1 or 2 there will be a messageIdentifier\n\t\t\t\tif (qos > 0) {\n\t\t\t\t\twireMessage.messageIdentifier = readUint16(input, pos);\n\t\t\t\t\tpos += 2;\n\t\t\t\t}\n\n\t\t\t\tvar message = new Paho.MQTT.Message(input.subarray(pos, endPos));\n\t\t\t\tif ((messageInfo & 0x01) == 0x01)\n\t\t\t\t\tmessage.retained = true;\n\t\t\t\tif ((messageInfo & 0x08) == 0x08)\n\t\t\t\t\tmessage.duplicate = true;\n\t\t\t\tmessage.qos = qos;\n\t\t\t\tmessage.destinationName = topicName;\n\t\t\t\twireMessage.payloadMessage = message;\n\t\t\t\tbreak;\n\n\t\t\tcase MESSAGE_TYPE.PUBACK:\n\t\t\tcase MESSAGE_TYPE.PUBREC:\n\t\t\tcase MESSAGE_TYPE.PUBREL:\n\t\t\tcase MESSAGE_TYPE.PUBCOMP:\n\t\t\tcase MESSAGE_TYPE.UNSUBACK:\n\t\t\t\twireMessage.messageIdentifier = readUint16(input, pos);\n\t\t\t\tbreak;\n\n\t\t\tcase MESSAGE_TYPE.SUBACK:\n\t\t\t\twireMessage.messageIdentifier = readUint16(input, pos);\n\t\t\t\tpos += 2;\n\t\t\t\twireMessage.returnCode = input.subarray(pos, endPos);\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\t\t\t\t;\n\t\t}\n\n\t\treturn [wireMessage,endPos];\n\t}\n\n\tfunction writeUint16(input, buffer, offset) {\n\t\tbuffer[offset++] = input >> 8; //MSB\n\t\tbuffer[offset++] = input % 256; //LSB\n\t\treturn offset;\n\t}\n\n\tfunction writeString(input, utf8Length, buffer, offset) {\n\t\toffset = writeUint16(utf8Length, buffer, offset);\n\t\tstringToUTF8(input, buffer, offset);\n\t\treturn offset + utf8Length;\n\t}\n\n\tfunction readUint16(buffer, offset) {\n\t\treturn 256*buffer[offset] + buffer[offset+1];\n\t}\n\n\t/**\n\t * Encodes an MQTT Multi-Byte Integer\n\t * @private\n\t */\n\tfunction encodeMBI(number) {\n\t\tvar output = new Array(1);\n\t\tvar numBytes = 0;\n\n\t\tdo {\n\t\t\tvar digit = number % 128;\n\t\t\tnumber = number >> 7;\n\t\t\tif (number > 0) {\n\t\t\t\tdigit |= 0x80;\n\t\t\t}\n\t\t\toutput[numBytes++] = digit;\n\t\t} while ( (number > 0) && (numBytes<4) );\n\n\t\treturn output;\n\t}\n\n\t/**\n\t * Takes a String and calculates its length in bytes when encoded in UTF8.\n\t * @private\n\t */\n\tfunction UTF8Length(input) {\n\t\tvar output = 0;\n\t\tfor (var i = 0; i 0x7FF)\n\t\t\t{\n\t\t\t\t// Surrogate pair means its a 4 byte character\n\t\t\t\tif (0xD800 <= charCode && charCode <= 0xDBFF)\n\t\t\t\t{\n\t\t\t\t\ti++;\n\t\t\t\t\toutput++;\n\t\t\t\t}\n\t\t\t\toutput +=3;\n\t\t\t}\n\t\t\telse if (charCode > 0x7F)\n\t\t\t\toutput +=2;\n\t\t\telse\n\t\t\t\toutput++;\n\t\t}\n\t\treturn output;\n\t}\n\n\t/**\n\t * Takes a String and writes it into an array as UTF8 encoded bytes.\n\t * @private\n\t */\n\tfunction stringToUTF8(input, output, start) {\n\t\tvar pos = start;\n\t\tfor (var i = 0; i>6 & 0x1F | 0xC0;\n\t\t\t\toutput[pos++] = charCode & 0x3F | 0x80;\n\t\t\t} else if (charCode <= 0xFFFF) {\n\t\t\t\toutput[pos++] = charCode>>12 & 0x0F | 0xE0;\n\t\t\t\toutput[pos++] = charCode>>6 & 0x3F | 0x80;\n\t\t\t\toutput[pos++] = charCode & 0x3F | 0x80;\n\t\t\t} else {\n\t\t\t\toutput[pos++] = charCode>>18 & 0x07 | 0xF0;\n\t\t\t\toutput[pos++] = charCode>>12 & 0x3F | 0x80;\n\t\t\t\toutput[pos++] = charCode>>6 & 0x3F | 0x80;\n\t\t\t\toutput[pos++] = charCode & 0x3F | 0x80;\n\t\t\t};\n\t\t}\n\t\treturn output;\n\t}\n\n\tfunction parseUTF8(input, offset, length) {\n\t\tvar output = \"\";\n\t\tvar utf16;\n\t\tvar pos = offset;\n\n\t\twhile (pos < offset+length)\n\t\t{\n\t\t\tvar byte1 = input[pos++];\n\t\t\tif (byte1 < 128)\n\t\t\t\tutf16 = byte1;\n\t\t\telse\n\t\t\t{\n\t\t\t\tvar byte2 = input[pos++]-128;\n\t\t\t\tif (byte2 < 0)\n\t\t\t\t\tthrow new Error(format(ERROR.MALFORMED_UTF, [byte1.toString(16), byte2.toString(16),\"\"]));\n\t\t\t\tif (byte1 < 0xE0) // 2 byte character\n\t\t\t\t\tutf16 = 64*(byte1-0xC0) + byte2;\n\t\t\t\telse\n\t\t\t\t{\n\t\t\t\t\tvar byte3 = input[pos++]-128;\n\t\t\t\t\tif (byte3 < 0)\n\t\t\t\t\t\tthrow new Error(format(ERROR.MALFORMED_UTF, [byte1.toString(16), byte2.toString(16), byte3.toString(16)]));\n\t\t\t\t\tif (byte1 < 0xF0) // 3 byte character\n\t\t\t\t\t\tutf16 = 4096*(byte1-0xE0) + 64*byte2 + byte3;\n\t\t\t\t\telse\n\t\t\t\t\t{\n\t\t\t\t\t\tvar byte4 = input[pos++]-128;\n\t\t\t\t\t\tif (byte4 < 0)\n\t\t\t\t\t\t\tthrow new Error(format(ERROR.MALFORMED_UTF, [byte1.toString(16), byte2.toString(16), byte3.toString(16), byte4.toString(16)]));\n\t\t\t\t\t\tif (byte1 < 0xF8) // 4 byte character\n\t\t\t\t\t\t\tutf16 = 262144*(byte1-0xF0) + 4096*byte2 + 64*byte3 + byte4;\n\t\t\t\t\t\telse // longer encodings are not supported\n\t\t\t\t\t\t\tthrow new Error(format(ERROR.MALFORMED_UTF, [byte1.toString(16), byte2.toString(16), byte3.toString(16), byte4.toString(16)]));\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif (utf16 > 0xFFFF) // 4 byte character - express as a surrogate pair\n\t\t\t{\n\t\t\t\tutf16 -= 0x10000;\n\t\t\t\toutput += String.fromCharCode(0xD800 + (utf16 >> 10)); // lead character\n\t\t\t\tutf16 = 0xDC00 + (utf16 & 0x3FF); // trail character\n\t\t\t}\n\t\t\toutput += String.fromCharCode(utf16);\n\t\t}\n\t\treturn output;\n\t}\n\n\t/**\n\t * Repeat keepalive requests, monitor responses.\n\t * @ignore\n\t */\n\tvar Pinger = function(client, window, keepAliveInterval) {\n\t\tthis._client = client;\n\t\tthis._window = window;\n\t\tthis._keepAliveInterval = keepAliveInterval*1000;\n\t\tthis.isReset = false;\n\n\t\tvar pingReq = new WireMessage(MESSAGE_TYPE.PINGREQ).encode();\n\n\t\tvar doTimeout = function (pinger) {\n\t\t\treturn function () {\n\t\t\t\treturn doPing.apply(pinger);\n\t\t\t};\n\t\t};\n\n\t\t/** @ignore */\n\t\tvar doPing = function() {\n\t\t\tif (!this.isReset) {\n\t\t\t\tthis._client._trace(\"Pinger.doPing\", \"Timed out\");\n\t\t\t\tthis._client._disconnected( ERROR.PING_TIMEOUT.code , format(ERROR.PING_TIMEOUT));\n\t\t\t} else {\n\t\t\t\tthis.isReset = false;\n\t\t\t\tthis._client._trace(\"Pinger.doPing\", \"send PINGREQ\");\n\t\t\t\tthis._client.socket.send(pingReq);\n\t\t\t\tthis.timeout = this._window.setTimeout(doTimeout(this), this._keepAliveInterval);\n\t\t\t}\n\t\t}\n\n\t\tthis.reset = function() {\n\t\t\tthis.isReset = true;\n\t\t\tthis._window.clearTimeout(this.timeout);\n\t\t\tif (this._keepAliveInterval > 0)\n\t\t\t\tthis.timeout = setTimeout(doTimeout(this), this._keepAliveInterval);\n\t\t}\n\n\t\tthis.cancel = function() {\n\t\t\tthis._window.clearTimeout(this.timeout);\n\t\t}\n\t};\n\n\t/**\n\t * Monitor request completion.\n\t * @ignore\n\t */\n\tvar Timeout = function(client, window, timeoutSeconds, action, args) {\n\t\tthis._window = window;\n\t\tif (!timeoutSeconds)\n\t\t\ttimeoutSeconds = 30;\n\n\t\tvar doTimeout = function (action, client, args) {\n\t\t\treturn function () {\n\t\t\t\treturn action.apply(client, args);\n\t\t\t};\n\t\t};\n\t\tthis.timeout = setTimeout(doTimeout(action, client, args), timeoutSeconds * 1000);\n\n\t\tthis.cancel = function() {\n\t\t\tthis._window.clearTimeout(this.timeout);\n\t\t}\n\t};\n\n\t/*\n\t * Internal implementation of the Websockets MQTT V3.1 client.\n\t *\n\t * @name Paho.MQTT.ClientImpl @constructor\n\t * @param {String} host the DNS nameof the webSocket host.\n\t * @param {Number} port the port number for that host.\n\t * @param {String} clientId the MQ client identifier.\n\t */\n\tvar ClientImpl = function (uri, host, port, path, clientId) {\n\t\t// Check dependencies are satisfied in this browser.\n\t\tif (!(\"WebSocket\" in global && global[\"WebSocket\"] !== null)) {\n\t\t\tthrow new Error(format(ERROR.UNSUPPORTED, [\"WebSocket\"]));\n\t\t}\n\t\tif (!(\"localStorage\" in global && global[\"localStorage\"] !== null)) {\n\t\t\tthrow new Error(format(ERROR.UNSUPPORTED, [\"localStorage\"]));\n\t\t}\n\t\tif (!(\"ArrayBuffer\" in global && global[\"ArrayBuffer\"] !== null)) {\n\t\t\tthrow new Error(format(ERROR.UNSUPPORTED, [\"ArrayBuffer\"]));\n\t\t}\n\t\tthis._trace(\"Paho.MQTT.Client\", uri, host, port, path, clientId);\n\n\t\tthis.host = host;\n\t\tthis.port = port;\n\t\tthis.path = path;\n\t\tthis.uri = uri;\n\t\tthis.clientId = clientId;\n\n\t\t// Local storagekeys are qualified with the following string.\n\t\t// The conditional inclusion of path in the key is for backward\n\t\t// compatibility to when the path was not configurable and assumed to\n\t\t// be /mqtt\n\t\tthis._localKey=host+\":\"+port+(path!=\"/mqtt\"?\":\"+path:\"\")+\":\"+clientId+\":\";\n\n\t\t// Create private instance-only message queue\n\t\t// Internal queue of messages to be sent, in sending order.\n\t\tthis._msg_queue = [];\n\n\t\t// Messages we have sent and are expecting a response for, indexed by their respective message ids.\n\t\tthis._sentMessages = {};\n\n\t\t// Messages we have received and acknowleged and are expecting a confirm message for\n\t\t// indexed by their respective message ids.\n\t\tthis._receivedMessages = {};\n\n\t\t// Internal list of callbacks to be executed when messages\n\t\t// have been successfully sent over web socket, e.g. disconnect\n\t\t// when it doesn't have to wait for ACK, just message is dispatched.\n\t\tthis._notify_msg_sent = {};\n\n\t\t// Unique identifier for SEND messages, incrementing\n\t\t// counter as messages are sent.\n\t\tthis._message_identifier = 1;\n\n\t\t// Used to determine the transmission sequence of stored sent messages.\n\t\tthis._sequence = 0;\n\n\n\t\t// Load the local state, if any, from the saved version, only restore state relevant to this client.\n\t\tfor (var key in localStorage)\n\t\t\tif ( key.indexOf(\"Sent:\"+this._localKey) == 0\n\t\t\t\t|| key.indexOf(\"Received:\"+this._localKey) == 0)\n\t\t\t\tthis.restore(key);\n\t};\n\n\t// Messaging Client public instance members.\n\tClientImpl.prototype.host;\n\tClientImpl.prototype.port;\n\tClientImpl.prototype.path;\n\tClientImpl.prototype.uri;\n\tClientImpl.prototype.clientId;\n\n\t// Messaging Client private instance members.\n\tClientImpl.prototype.socket;\n\t/* true once we have received an acknowledgement to a CONNECT packet. */\n\tClientImpl.prototype.connected = false;\n\t/* The largest message identifier allowed, may not be larger than 2**16 but\n\t * if set smaller reduces the maximum number of outbound messages allowed.\n\t */\n\tClientImpl.prototype.maxMessageIdentifier = 65536;\n\tClientImpl.prototype.connectOptions;\n\tClientImpl.prototype.hostIndex;\n\tClientImpl.prototype.onConnectionLost;\n\tClientImpl.prototype.onMessageDelivered;\n\tClientImpl.prototype.onMessageArrived;\n\tClientImpl.prototype.traceFunction;\n\tClientImpl.prototype._msg_queue = null;\n\tClientImpl.prototype._connectTimeout;\n\t/* The sendPinger monitors how long we allow before we send data to prove to the server that we are alive. */\n\tClientImpl.prototype.sendPinger = null;\n\t/* The receivePinger monitors how long we allow before we require evidence that the server is alive. */\n\tClientImpl.prototype.receivePinger = null;\n\n\tClientImpl.prototype.receiveBuffer = null;\n\n\tClientImpl.prototype._traceBuffer = null;\n\tClientImpl.prototype._MAX_TRACE_ENTRIES = 100;\n\n\tClientImpl.prototype.connect = function (connectOptions) {\n\t\tvar connectOptionsMasked = this._traceMask(connectOptions, \"password\");\n\t\tthis._trace(\"Client.connect\", connectOptionsMasked, this.socket, this.connected);\n\n\t\tif (this.connected)\n\t\t\tthrow new Error(format(ERROR.INVALID_STATE, [\"already connected\"]));\n\t\tif (this.socket)\n\t\t\tthrow new Error(format(ERROR.INVALID_STATE, [\"already connected\"]));\n\n\t\tthis.connectOptions = connectOptions;\n\n\t\tif (connectOptions.uris) {\n\t\t\tthis.hostIndex = 0;\n\t\t\tthis._doConnect(connectOptions.uris[0]);\n\t\t} else {\n\t\t\tthis._doConnect(this.uri);\n\t\t}\n\n\t};\n\n\tClientImpl.prototype.subscribe = function (filter, subscribeOptions) {\n\t\tthis._trace(\"Client.subscribe\", filter, subscribeOptions);\n\n\t\tif (!this.connected)\n\t\t\tthrow new Error(format(ERROR.INVALID_STATE, [\"not connected\"]));\n\n\t\tvar wireMessage = new WireMessage(MESSAGE_TYPE.SUBSCRIBE);\n\t\twireMessage.topics=[filter];\n\t\tif (subscribeOptions.qos != undefined)\n\t\t\twireMessage.requestedQos = [subscribeOptions.qos];\n\t\telse\n\t\t\twireMessage.requestedQos = [0];\n\n\t\tif (subscribeOptions.onSuccess) {\n\t\t\twireMessage.onSuccess = function(grantedQos) {subscribeOptions.onSuccess({invocationContext:subscribeOptions.invocationContext,grantedQos:grantedQos});};\n\t\t}\n\n\t\tif (subscribeOptions.onFailure) {\n\t\t\twireMessage.onFailure = function(errorCode) {subscribeOptions.onFailure({invocationContext:subscribeOptions.invocationContext,errorCode:errorCode});};\n\t\t}\n\n\t\tif (subscribeOptions.timeout) {\n\t\t\twireMessage.timeOut = new Timeout(this, window, subscribeOptions.timeout, subscribeOptions.onFailure\n\t\t\t\t, [{invocationContext:subscribeOptions.invocationContext,\n\t\t\t\t\terrorCode:ERROR.SUBSCRIBE_TIMEOUT.code,\n\t\t\t\t\terrorMessage:format(ERROR.SUBSCRIBE_TIMEOUT)}]);\n\t\t}\n\n\t\t// All subscriptions return a SUBACK.\n\t\tthis._requires_ack(wireMessage);\n\t\tthis._schedule_message(wireMessage);\n\t};\n\n\t/** @ignore */\n\tClientImpl.prototype.unsubscribe = function(filter, unsubscribeOptions) {\n\t\tthis._trace(\"Client.unsubscribe\", filter, unsubscribeOptions);\n\n\t\tif (!this.connected)\n\t\t\tthrow new Error(format(ERROR.INVALID_STATE, [\"not connected\"]));\n\n\t\tvar wireMessage = new WireMessage(MESSAGE_TYPE.UNSUBSCRIBE);\n\t\twireMessage.topics = [filter];\n\n\t\tif (unsubscribeOptions.onSuccess) {\n\t\t\twireMessage.callback = function() {unsubscribeOptions.onSuccess({invocationContext:unsubscribeOptions.invocationContext});};\n\t\t}\n\t\tif (unsubscribeOptions.timeout) {\n\t\t\twireMessage.timeOut = new Timeout(this, window, unsubscribeOptions.timeout, unsubscribeOptions.onFailure\n\t\t\t\t, [{invocationContext:unsubscribeOptions.invocationContext,\n\t\t\t\t\terrorCode:ERROR.UNSUBSCRIBE_TIMEOUT.code,\n\t\t\t\t\terrorMessage:format(ERROR.UNSUBSCRIBE_TIMEOUT)}]);\n\t\t}\n\n\t\t// All unsubscribes return a SUBACK.\n\t\tthis._requires_ack(wireMessage);\n\t\tthis._schedule_message(wireMessage);\n\t};\n\n\tClientImpl.prototype.send = function (message) {\n\t\tthis._trace(\"Client.send\", message);\n\n\t\tif (!this.connected)\n\t\t\tthrow new Error(format(ERROR.INVALID_STATE, [\"not connected\"]));\n\n\t\twireMessage = new WireMessage(MESSAGE_TYPE.PUBLISH);\n\t\twireMessage.payloadMessage = message;\n\n\t\tif (message.qos > 0)\n\t\t\tthis._requires_ack(wireMessage);\n\t\telse if (this.onMessageDelivered)\n\t\t\tthis._notify_msg_sent[wireMessage] = this.onMessageDelivered(wireMessage.payloadMessage);\n\t\tthis._schedule_message(wireMessage);\n\t};\n\n\tClientImpl.prototype.disconnect = function () {\n\t\tthis._trace(\"Client.disconnect\");\n\n\t\tif (!this.socket)\n\t\t\tthrow new Error(format(ERROR.INVALID_STATE, [\"not connecting or connected\"]));\n\n\t\twireMessage = new WireMessage(MESSAGE_TYPE.DISCONNECT);\n\n\t\t// Run the disconnected call back as soon as the message has been sent,\n\t\t// in case of a failure later on in the disconnect processing.\n\t\t// as a consequence, the _disconected call back may be run several times.\n\t\tthis._notify_msg_sent[wireMessage] = scope(this._disconnected, this);\n\n\t\tthis._schedule_message(wireMessage);\n\t};\n\n\tClientImpl.prototype.getTraceLog = function () {\n\t\tif ( this._traceBuffer !== null ) {\n\t\t\tthis._trace(\"Client.getTraceLog\", new Date());\n\t\t\tthis._trace(\"Client.getTraceLog in flight messages\", this._sentMessages.length);\n\t\t\tfor (var key in this._sentMessages)\n\t\t\t\tthis._trace(\"_sentMessages \",key, this._sentMessages[key]);\n\t\t\tfor (var key in this._receivedMessages)\n\t\t\t\tthis._trace(\"_receivedMessages \",key, this._receivedMessages[key]);\n\n\t\t\treturn this._traceBuffer;\n\t\t}\n\t};\n\n\tClientImpl.prototype.startTrace = function () {\n\t\tif ( this._traceBuffer === null ) {\n\t\t\tthis._traceBuffer = [];\n\t\t}\n\t\tthis._trace(\"Client.startTrace\", new Date(), version);\n\t};\n\n\tClientImpl.prototype.stopTrace = function () {\n\t\tdelete this._traceBuffer;\n\t};\n\n\tClientImpl.prototype._doConnect = function (wsurl) {\n\t\t// When the socket is open, this client will send the CONNECT WireMessage using the saved parameters.\n\t\tif (this.connectOptions.useSSL) {\n\t\t\tvar uriParts = wsurl.split(\":\");\n\t\t\turiParts[0] = \"wss\";\n\t\t\twsurl = uriParts.join(\":\");\n\t\t}\n\t\tthis.connected = false;\n\t\tif (this.connectOptions.mqttVersion < 4) {\n\t\t\tthis.socket = new WebSocket(wsurl, [\"mqttv3.1\"]);\n\t\t} else {\n\t\t\tthis.socket = new WebSocket(wsurl, [\"mqtt\"]);\n\t\t}\n\t\tthis.socket.binaryType = 'arraybuffer';\n\n\t\tthis.socket.onopen = scope(this._on_socket_open, this);\n\t\tthis.socket.onmessage = scope(this._on_socket_message, this);\n\t\tthis.socket.onerror = scope(this._on_socket_error, this);\n\t\tthis.socket.onclose = scope(this._on_socket_close, this);\n\n\t\tthis.sendPinger = new Pinger(this, window, this.connectOptions.keepAliveInterval);\n\t\tthis.receivePinger = new Pinger(this, window, this.connectOptions.keepAliveInterval);\n\n\t\tthis._connectTimeout = new Timeout(this, window, this.connectOptions.timeout, this._disconnected, [ERROR.CONNECT_TIMEOUT.code, format(ERROR.CONNECT_TIMEOUT)]);\n\t};\n\n\n\t// Schedule a new message to be sent over the WebSockets\n\t// connection. CONNECT messages cause WebSocket connection\n\t// to be started. All other messages are queued internally\n\t// until this has happened. When WS connection starts, process\n\t// all outstanding messages.\n\tClientImpl.prototype._schedule_message = function (message) {\n\t\tthis._msg_queue.push(message);\n\t\t// Process outstanding messages in the queue if we have an open socket, and have received CONNACK.\n\t\tif (this.connected) {\n\t\t\tthis._process_queue();\n\t\t}\n\t};\n\n\tClientImpl.prototype.store = function(prefix, wireMessage) {\n\t\tvar storedMessage = {type:wireMessage.type, messageIdentifier:wireMessage.messageIdentifier, version:1};\n\n\t\tswitch(wireMessage.type) {\n\t\t\tcase MESSAGE_TYPE.PUBLISH:\n\t\t\t\tif(wireMessage.pubRecReceived)\n\t\t\t\t\tstoredMessage.pubRecReceived = true;\n\n\t\t\t\t// Convert the payload to a hex string.\n\t\t\t\tstoredMessage.payloadMessage = {};\n\t\t\t\tvar hex = \"\";\n\t\t\t\tvar messageBytes = wireMessage.payloadMessage.payloadBytes;\n\t\t\t\tfor (var i=0; i= 2) {\n\t\t\t\t\tvar x = parseInt(hex.substring(0, 2), 16);\n\t\t\t\t\thex = hex.substring(2, hex.length);\n\t\t\t\t\tbyteStream[i++] = x;\n\t\t\t\t}\n\t\t\t\tvar payloadMessage = new Paho.MQTT.Message(byteStream);\n\n\t\t\t\tpayloadMessage.qos = storedMessage.payloadMessage.qos;\n\t\t\t\tpayloadMessage.destinationName = storedMessage.payloadMessage.destinationName;\n\t\t\t\tif (storedMessage.payloadMessage.duplicate)\n\t\t\t\t\tpayloadMessage.duplicate = true;\n\t\t\t\tif (storedMessage.payloadMessage.retained)\n\t\t\t\t\tpayloadMessage.retained = true;\n\t\t\t\twireMessage.payloadMessage = payloadMessage;\n\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\t\t\t\tthrow Error(format(ERROR.INVALID_STORED_DATA, [key, value]));\n\t\t}\n\n\t\tif (key.indexOf(\"Sent:\"+this._localKey) == 0) {\n\t\t\twireMessage.payloadMessage.duplicate = true;\n\t\t\tthis._sentMessages[wireMessage.messageIdentifier] = wireMessage;\n\t\t} else if (key.indexOf(\"Received:\"+this._localKey) == 0) {\n\t\t\tthis._receivedMessages[wireMessage.messageIdentifier] = wireMessage;\n\t\t}\n\t};\n\n\tClientImpl.prototype._process_queue = function () {\n\t\tvar message = null;\n\t\t// Process messages in order they were added\n\t\tvar fifo = this._msg_queue.reverse();\n\n\t\t// Send all queued messages down socket connection\n\t\twhile ((message = fifo.pop())) {\n\t\t\tthis._socket_send(message);\n\t\t\t// Notify listeners that message was successfully sent\n\t\t\tif (this._notify_msg_sent[message]) {\n\t\t\t\tthis._notify_msg_sent[message]();\n\t\t\t\tdelete this._notify_msg_sent[message];\n\t\t\t}\n\t\t}\n\t};\n\n\t/**\n\t * Expect an ACK response for this message. Add message to the set of in progress\n\t * messages and set an unused identifier in this message.\n\t * @ignore\n\t */\n\tClientImpl.prototype._requires_ack = function (wireMessage) {\n\t\tvar messageCount = Object.keys(this._sentMessages).length;\n\t\tif (messageCount > this.maxMessageIdentifier)\n\t\t\tthrow Error (\"Too many messages:\"+messageCount);\n\n\t\twhile(this._sentMessages[this._message_identifier] !== undefined) {\n\t\t\tthis._message_identifier++;\n\t\t}\n\t\twireMessage.messageIdentifier = this._message_identifier;\n\t\tthis._sentMessages[wireMessage.messageIdentifier] = wireMessage;\n\t\tif (wireMessage.type === MESSAGE_TYPE.PUBLISH) {\n\t\t\tthis.store(\"Sent:\", wireMessage);\n\t\t}\n\t\tif (this._message_identifier === this.maxMessageIdentifier) {\n\t\t\tthis._message_identifier = 1;\n\t\t}\n\t};\n\n\t/**\n\t * Called when the underlying websocket has been opened.\n\t * @ignore\n\t */\n\tClientImpl.prototype._on_socket_open = function () {\n\t\t// Create the CONNECT message object.\n\t\tvar wireMessage = new WireMessage(MESSAGE_TYPE.CONNECT, this.connectOptions);\n\t\twireMessage.clientId = this.clientId;\n\t\tthis._socket_send(wireMessage);\n\t};\n\n\t/**\n\t * Called when the underlying websocket has received a complete packet.\n\t * @ignore\n\t */\n\tClientImpl.prototype._on_socket_message = function (event) {\n\t\tthis._trace(\"Client._on_socket_message\", event.data);\n\t\t// Reset the receive ping timer, we now have evidence the server is alive.\n\t\tthis.receivePinger.reset();\n\t\tvar messages = this._deframeMessages(event.data);\n\t\tfor (var i = 0; i < messages.length; i+=1) {\n\t\t\tthis._handleMessage(messages[i]);\n\t\t}\n\t}\n\n\tClientImpl.prototype._deframeMessages = function(data) {\n\t\tvar byteArray = new Uint8Array(data);\n\t\tif (this.receiveBuffer) {\n\t\t\tvar newData = new Uint8Array(this.receiveBuffer.length+byteArray.length);\n\t\t\tnewData.set(this.receiveBuffer);\n\t\t\tnewData.set(byteArray,this.receiveBuffer.length);\n\t\t\tbyteArray = newData;\n\t\t\tdelete this.receiveBuffer;\n\t\t}\n\t\ttry {\n\t\t\tvar offset = 0;\n\t\t\tvar messages = [];\n\t\t\twhile(offset < byteArray.length) {\n\t\t\t\tvar result = decodeMessage(byteArray,offset);\n\t\t\t\tvar wireMessage = result[0];\n\t\t\t\toffset = result[1];\n\t\t\t\tif (wireMessage !== null) {\n\t\t\t\t\tmessages.push(wireMessage);\n\t\t\t\t} else {\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t\tif (offset < byteArray.length) {\n\t\t\t\tthis.receiveBuffer = byteArray.subarray(offset);\n\t\t\t}\n\t\t} catch (error) {\n\t\t\tthis._disconnected(ERROR.INTERNAL_ERROR.code , format(ERROR.INTERNAL_ERROR, [error.message,error.stack.toString()]));\n\t\t\treturn;\n\t\t}\n\t\treturn messages;\n\t}\n\n\tClientImpl.prototype._handleMessage = function(wireMessage) {\n\n\t\tthis._trace(\"Client._handleMessage\", wireMessage);\n\n\t\ttry {\n\t\t\tswitch(wireMessage.type) {\n\t\t\t\tcase MESSAGE_TYPE.CONNACK:\n\t\t\t\t\tthis._connectTimeout.cancel();\n\n\t\t\t\t\t// If we have started using clean session then clear up the local state.\n\t\t\t\t\tif (this.connectOptions.cleanSession) {\n\t\t\t\t\t\tfor (var key in this._sentMessages) {\n\t\t\t\t\t\t\tvar sentMessage = this._sentMessages[key];\n\t\t\t\t\t\t\tlocalStorage.removeItem(\"Sent:\"+this._localKey+sentMessage.messageIdentifier);\n\t\t\t\t\t\t}\n\t\t\t\t\t\tthis._sentMessages = {};\n\n\t\t\t\t\t\tfor (var key in this._receivedMessages) {\n\t\t\t\t\t\t\tvar receivedMessage = this._receivedMessages[key];\n\t\t\t\t\t\t\tlocalStorage.removeItem(\"Received:\"+this._localKey+receivedMessage.messageIdentifier);\n\t\t\t\t\t\t}\n\t\t\t\t\t\tthis._receivedMessages = {};\n\t\t\t\t\t}\n\t\t\t\t\t// Client connected and ready for business.\n\t\t\t\t\tif (wireMessage.returnCode === 0) {\n\t\t\t\t\t\tthis.connected = true;\n\t\t\t\t\t\t// Jump to the end of the list of uris and stop looking for a good host.\n\t\t\t\t\t\tif (this.connectOptions.uris)\n\t\t\t\t\t\t\tthis.hostIndex = this.connectOptions.uris.length;\n\t\t\t\t\t} else {\n\t\t\t\t\t\tthis._disconnected(ERROR.CONNACK_RETURNCODE.code , format(ERROR.CONNACK_RETURNCODE, [wireMessage.returnCode, CONNACK_RC[wireMessage.returnCode]]));\n\t\t\t\t\t\tbreak;\n\t\t\t\t\t}\n\n\t\t\t\t\t// Resend messages.\n\t\t\t\t\tvar sequencedMessages = new Array();\n\t\t\t\t\tfor (var msgId in this._sentMessages) {\n\t\t\t\t\t\tif (this._sentMessages.hasOwnProperty(msgId))\n\t\t\t\t\t\t\tsequencedMessages.push(this._sentMessages[msgId]);\n\t\t\t\t\t}\n\n\t\t\t\t\t// Sort sentMessages into the original sent order.\n\t\t\t\t\tvar sequencedMessages = sequencedMessages.sort(function(a,b) {return a.sequence - b.sequence;} );\n\t\t\t\t\tfor (var i=0, len=sequencedMessages.length; i\n\t * Most applications will create just one Client object and then call its connect() method,\n\t * however applications can create more than one Client object if they wish.\n\t * In this case the combination of host, port and clientId attributes must be different for each Client object.\n\t *
\n\t * The send, subscribe and unsubscribe methods are implemented as asynchronous JavaScript methods\n\t * (even though the underlying protocol exchange might be synchronous in nature).\n\t * This means they signal their completion by calling back to the application,\n\t * via Success or Failure callback functions provided by the application on the method in question.\n\t * Such callbacks are called at most once per method invocation and do not persist beyond the lifetime\n\t * of the script that made the invocation.\n\t *
\n\t * In contrast there are some callback functions, most notably onMessageArrived,\n\t * that are defined on the {@link Paho.MQTT.Client} object.\n\t * These may get called multiple times, and aren't directly related to specific method invocations made by the client.\n\t *\n\t * @name Paho.MQTT.Client\n\t *\n\t * @constructor\n\t *\n\t * @param {string} host - the address of the messaging server, as a fully qualified WebSocket URI, as a DNS name or dotted decimal IP address.\n\t * @param {number} port - the port number to connect to - only required if host is not a URI\n\t * @param {string} path - the path on the host to connect to - only used if host is not a URI. Default: '/mqtt'.\n\t * @param {string} clientId - the Messaging client identifier, between 1 and 23 characters in length.\n\t *\n\t * @property {string} host - read only the server's DNS hostname or dotted decimal IP address.\n\t * @property {number} port - read only the server's port.\n\t * @property {string} path - read only the server's path.\n\t * @property {string} clientId - read only used when connecting to the server.\n\t * @property {function} onConnectionLost - called when a connection has been lost.\n\t * after a connect() method has succeeded.\n\t * Establish the call back used when a connection has been lost. The connection may be\n\t * lost because the client initiates a disconnect or because the server or transfer\n\t * cause the client to be disconnected. The disconnect call back may be called without\n\t * the connectionComplete call back being invoked if, for example the client fails to\n\t * connect.\n\t * A single response object parameter is passed to the onConnectionLost callback containing the following fields:\n\t *
\n\t *
errorCode\n\t *
errorMessage\n\t *
\n\t * @property {function} onMessageDelivered called when a message has been delivered.\n\t * All processing that this Client will ever do has been completed. So, for example,\n\t * in the case of a Qos=2 message sent by this client, the PubComp flow has been received from the server\n\t * and the message has been removed from persistent storage before this callback is invoked.\n\t * Parameters passed to the onMessageDelivered callback are:\n\t * \n\t *
{@link Paho.MQTT.Message} that was delivered.\n\t *
\n\t * @property {function} onMessageArrived called when a message has arrived in this Paho.MQTT.client.\n\t * Parameters passed to the onMessageArrived callback are:\n\t * \n\t *
{@link Paho.MQTT.Message} that has arrived.\n\t *
\n\t */\n\tvar Client = function (host, port, path, clientId) {\n\n\t\tvar uri;\n\n\t\tif (typeof host !== \"string\")\n\t\t\tthrow new Error(format(ERROR.INVALID_TYPE, [typeof host, \"host\"]));\n\n\t\tif (arguments.length == 2) {\n\t\t\t// host: must be full ws:// uri\n\t\t\t// port: clientId\n\t\t\tclientId = port;\n\t\t\turi = host;\n\t\t\tvar match = uri.match(/^(wss?):\\/\\/((\\[(.+)\\])|([^\\/]+?))(:(\\d+))?(\\/.*)$/);\n\t\t\tif (match) {\n\t\t\t\thost = match[4]||match[2];\n\t\t\t\tport = parseInt(match[7]);\n\t\t\t\tpath = match[8];\n\t\t\t} else {\n\t\t\t\tthrow new Error(format(ERROR.INVALID_ARGUMENT,[host,\"host\"]));\n\t\t\t}\n\t\t} else {\n\t\t\tif (arguments.length == 3) {\n\t\t\t\tclientId = path;\n\t\t\t\tpath = \"/mqtt\";\n\t\t\t}\n\t\t\tif (typeof port !== \"number\" || port < 0)\n\t\t\t\tthrow new Error(format(ERROR.INVALID_TYPE, [typeof port, \"port\"]));\n\t\t\tif (typeof path !== \"string\")\n\t\t\t\tthrow new Error(format(ERROR.INVALID_TYPE, [typeof path, \"path\"]));\n\n\t\t\tvar ipv6AddSBracket = (host.indexOf(\":\") != -1 && host.slice(0,1) != \"[\" && host.slice(-1) != \"]\");\n\t\t\turi = \"ws://\"+(ipv6AddSBracket?\"[\"+host+\"]\":host)+\":\"+port+path;\n\t\t}\n\n\t\tvar clientIdLength = 0;\n\t\tfor (var i = 0; i 65535)\n\t\t\tthrow new Error(format(ERROR.INVALID_ARGUMENT, [clientId, \"clientId\"]));\n\n\t\tvar client = new ClientImpl(uri, host, port, path, clientId);\n\t\tthis._getHost = function() { return host; };\n\t\tthis._setHost = function() { throw new Error(format(ERROR.UNSUPPORTED_OPERATION)); };\n\n\t\tthis._getPort = function() { return port; };\n\t\tthis._setPort = function() { throw new Error(format(ERROR.UNSUPPORTED_OPERATION)); };\n\n\t\tthis._getPath = function() { return path; };\n\t\tthis._setPath = function() { throw new Error(format(ERROR.UNSUPPORTED_OPERATION)); };\n\n\t\tthis._getURI = function() { return uri; };\n\t\tthis._setURI = function() { throw new Error(format(ERROR.UNSUPPORTED_OPERATION)); };\n\n\t\tthis._getClientId = function() { return client.clientId; };\n\t\tthis._setClientId = function() { throw new Error(format(ERROR.UNSUPPORTED_OPERATION)); };\n\n\t\tthis._getOnConnectionLost = function() { return client.onConnectionLost; };\n\t\tthis._setOnConnectionLost = function(newOnConnectionLost) {\n\t\t\tif (typeof newOnConnectionLost === \"function\")\n\t\t\t\tclient.onConnectionLost = newOnConnectionLost;\n\t\t\telse\n\t\t\t\tthrow new Error(format(ERROR.INVALID_TYPE, [typeof newOnConnectionLost, \"onConnectionLost\"]));\n\t\t};\n\n\t\tthis._getOnMessageDelivered = function() { return client.onMessageDelivered; };\n\t\tthis._setOnMessageDelivered = function(newOnMessageDelivered) {\n\t\t\tif (typeof newOnMessageDelivered === \"function\")\n\t\t\t\tclient.onMessageDelivered = newOnMessageDelivered;\n\t\t\telse\n\t\t\t\tthrow new Error(format(ERROR.INVALID_TYPE, [typeof newOnMessageDelivered, \"onMessageDelivered\"]));\n\t\t};\n\n\t\tthis._getOnMessageArrived = function() { return client.onMessageArrived; };\n\t\tthis._setOnMessageArrived = function(newOnMessageArrived) {\n\t\t\tif (typeof newOnMessageArrived === \"function\")\n\t\t\t\tclient.onMessageArrived = newOnMessageArrived;\n\t\t\telse\n\t\t\t\tthrow new Error(format(ERROR.INVALID_TYPE, [typeof newOnMessageArrived, \"onMessageArrived\"]));\n\t\t};\n\n\t\tthis._getTrace = function() { return client.traceFunction; };\n\t\tthis._setTrace = function(trace) {\n\t\t\tif(typeof trace === \"function\"){\n\t\t\t\tclient.traceFunction = trace;\n\t\t\t}else{\n\t\t\t\tthrow new Error(format(ERROR.INVALID_TYPE, [typeof trace, \"onTrace\"]));\n\t\t\t}\n\t\t};\n\n\t\t/**\n\t\t * Connect this Messaging client to its server.\n\t\t *\n\t\t * @name Paho.MQTT.Client#connect\n\t\t * @function\n\t\t * @param {Object} connectOptions - attributes used with the connection.\n\t\t * @param {number} connectOptions.timeout - If the connect has not succeeded within this\n\t\t * number of seconds, it is deemed to have failed.\n\t\t * The default is 30 seconds.\n\t\t * @param {string} connectOptions.userName - Authentication username for this connection.\n\t\t * @param {string} connectOptions.password - Authentication password for this connection.\n\t\t * @param {Paho.MQTT.Message} connectOptions.willMessage - sent by the server when the client\n\t\t * disconnects abnormally.\n\t\t * @param {Number} connectOptions.keepAliveInterval - the server disconnects this client if\n\t\t * there is no activity for this number of seconds.\n\t\t * The default value of 60 seconds is assumed if not set.\n\t\t * @param {boolean} connectOptions.cleanSession - if true(default) the client and server\n\t\t * persistent state is deleted on successful connect.\n\t\t * @param {boolean} connectOptions.useSSL - if present and true, use an SSL Websocket connection.\n\t\t * @param {object} connectOptions.invocationContext - passed to the onSuccess callback or onFailure callback.\n\t\t * @param {function} connectOptions.onSuccess - called when the connect acknowledgement\n\t\t * has been received from the server.\n\t\t * A single response object parameter is passed to the onSuccess callback containing the following fields:\n\t\t * \n\t\t *
invocationContext as passed in to the onSuccess method in the connectOptions.\n\t\t *
\n\t\t * @config {function} [onFailure] called when the connect request has failed or timed out.\n\t\t * A single response object parameter is passed to the onFailure callback containing the following fields:\n\t\t * \n\t\t *
invocationContext as passed in to the onFailure method in the connectOptions.\n\t\t *
errorCode a number indicating the nature of the error.\n\t\t *
errorMessage text describing the error.\n\t\t *
\n\t\t * @config {Array} [hosts] If present this contains either a set of hostnames or fully qualified\n\t\t * WebSocket URIs (ws://example.com:1883/mqtt), that are tried in order in place\n\t\t * of the host and port paramater on the construtor. The hosts are tried one at at time in order until\n\t\t * one of then succeeds.\n\t\t * @config {Array} [ports] If present the set of ports matching the hosts. If hosts contains URIs, this property\n\t\t * is not used.\n\t\t * @throws {InvalidState} if the client is not in disconnected state. The client must have received connectionLost\n\t\t * or disconnected before calling connect for a second or subsequent time.\n\t\t */\n\t\tthis.connect = function (connectOptions) {\n\t\t\tconnectOptions = connectOptions || {} ;\n\t\t\tvalidate(connectOptions, {timeout:\"number\",\n\t\t\t\tuserName:\"string\",\n\t\t\t\tpassword:\"string\",\n\t\t\t\twillMessage:\"object\",\n\t\t\t\tkeepAliveInterval:\"number\",\n\t\t\t\tcleanSession:\"boolean\",\n\t\t\t\tuseSSL:\"boolean\",\n\t\t\t\tinvocationContext:\"object\",\n\t\t\t\tonSuccess:\"function\",\n\t\t\t\tonFailure:\"function\",\n\t\t\t\thosts:\"object\",\n\t\t\t\tports:\"object\",\n\t\t\t\tmqttVersion:\"number\"});\n\n\t\t\t// If no keep alive interval is set, assume 60 seconds.\n\t\t\tif (connectOptions.keepAliveInterval === undefined)\n\t\t\t\tconnectOptions.keepAliveInterval = 60;\n\n\t\t\tif (connectOptions.mqttVersion > 4 || connectOptions.mqttVersion < 3) {\n\t\t\t\tthrow new Error(format(ERROR.INVALID_ARGUMENT, [connectOptions.mqttVersion, \"connectOptions.mqttVersion\"]));\n\t\t\t}\n\n\t\t\tif (connectOptions.mqttVersion === undefined) {\n\t\t\t\tconnectOptions.mqttVersionExplicit = false;\n\t\t\t\tconnectOptions.mqttVersion = 4;\n\t\t\t} else {\n\t\t\t\tconnectOptions.mqttVersionExplicit = true;\n\t\t\t}\n\n\t\t\t//Check that if password is set, so is username\n\t\t\tif (connectOptions.password === undefined && connectOptions.userName !== undefined)\n\t\t\t\tthrow new Error(format(ERROR.INVALID_ARGUMENT, [connectOptions.password, \"connectOptions.password\"]))\n\n\t\t\tif (connectOptions.willMessage) {\n\t\t\t\tif (!(connectOptions.willMessage instanceof Message))\n\t\t\t\t\tthrow new Error(format(ERROR.INVALID_TYPE, [connectOptions.willMessage, \"connectOptions.willMessage\"]));\n\t\t\t\t// The will message must have a payload that can be represented as a string.\n\t\t\t\t// Cause the willMessage to throw an exception if this is not the case.\n\t\t\t\tconnectOptions.willMessage.stringPayload;\n\n\t\t\t\tif (typeof connectOptions.willMessage.destinationName === \"undefined\")\n\t\t\t\t\tthrow new Error(format(ERROR.INVALID_TYPE, [typeof connectOptions.willMessage.destinationName, \"connectOptions.willMessage.destinationName\"]));\n\t\t\t}\n\t\t\tif (typeof connectOptions.cleanSession === \"undefined\")\n\t\t\t\tconnectOptions.cleanSession = true;\n\t\t\tif (connectOptions.hosts) {\n\n\t\t\t\tif (!(connectOptions.hosts instanceof Array) )\n\t\t\t\t\tthrow new Error(format(ERROR.INVALID_ARGUMENT, [connectOptions.hosts, \"connectOptions.hosts\"]));\n\t\t\t\tif (connectOptions.hosts.length <1 )\n\t\t\t\t\tthrow new Error(format(ERROR.INVALID_ARGUMENT, [connectOptions.hosts, \"connectOptions.hosts\"]));\n\n\t\t\t\tvar usingURIs = false;\n\t\t\t\tfor (var i = 0; i\n\t\t * @param {object} subscribeOptions - used to control the subscription\n\t\t *\n\t\t * @param {number} subscribeOptions.qos - the maiximum qos of any publications sent\n\t\t * as a result of making this subscription.\n\t\t * @param {object} subscribeOptions.invocationContext - passed to the onSuccess callback\n\t\t * or onFailure callback.\n\t\t * @param {function} subscribeOptions.onSuccess - called when the subscribe acknowledgement\n\t\t * has been received from the server.\n\t\t * A single response object parameter is passed to the onSuccess callback containing the following fields:\n\t\t * \n\t\t *
invocationContext if set in the subscribeOptions.\n\t\t *
\n\t\t * @param {function} subscribeOptions.onFailure - called when the subscribe request has failed or timed out.\n\t\t * A single response object parameter is passed to the onFailure callback containing the following fields:\n\t\t * \n\t\t *
invocationContext - if set in the subscribeOptions.\n\t\t *
errorCode - a number indicating the nature of the error.\n\t\t *
errorMessage - text describing the error.\n\t\t *
\n\t\t * @param {number} subscribeOptions.timeout - which, if present, determines the number of\n\t\t * seconds after which the onFailure calback is called.\n\t\t * The presence of a timeout does not prevent the onSuccess\n\t\t * callback from being called when the subscribe completes.\n\t\t * @throws {InvalidState} if the client is not in connected state.\n\t\t */\n\t\tthis.subscribe = function (filter, subscribeOptions) {\n\t\t\tif (typeof filter !== \"string\")\n\t\t\t\tthrow new Error(\"Invalid argument:\"+filter);\n\t\t\tsubscribeOptions = subscribeOptions || {} ;\n\t\t\tvalidate(subscribeOptions, {qos:\"number\",\n\t\t\t\tinvocationContext:\"object\",\n\t\t\t\tonSuccess:\"function\",\n\t\t\t\tonFailure:\"function\",\n\t\t\t\ttimeout:\"number\"\n\t\t\t});\n\t\t\tif (subscribeOptions.timeout && !subscribeOptions.onFailure)\n\t\t\t\tthrow new Error(\"subscribeOptions.timeout specified with no onFailure callback.\");\n\t\t\tif (typeof subscribeOptions.qos !== \"undefined\"\n\t\t\t\t&& !(subscribeOptions.qos === 0 || subscribeOptions.qos === 1 || subscribeOptions.qos === 2 ))\n\t\t\t\tthrow new Error(format(ERROR.INVALID_ARGUMENT, [subscribeOptions.qos, \"subscribeOptions.qos\"]));\n\t\t\tclient.subscribe(filter, subscribeOptions);\n\t\t};\n\n\t\t/**\n\t\t * Unsubscribe for messages, stop receiving messages sent to destinations described by the filter.\n\t\t *\n\t\t * @name Paho.MQTT.Client#unsubscribe\n\t\t * @function\n\t\t * @param {string} filter - describing the destinations to receive messages from.\n\t\t * @param {object} unsubscribeOptions - used to control the subscription\n\t\t * @param {object} unsubscribeOptions.invocationContext - passed to the onSuccess callback\n\t\t or onFailure callback.\n\t\t * @param {function} unsubscribeOptions.onSuccess - called when the unsubscribe acknowledgement has been received from the server.\n\t\t * A single response object parameter is passed to the\n\t\t * onSuccess callback containing the following fields:\n\t\t * \n\t\t *
invocationContext - if set in the unsubscribeOptions.\n\t\t *
\n\t\t * @param {function} unsubscribeOptions.onFailure called when the unsubscribe request has failed or timed out.\n\t\t * A single response object parameter is passed to the onFailure callback containing the following fields:\n\t\t * \n\t\t *
invocationContext - if set in the unsubscribeOptions.\n\t\t *
errorCode - a number indicating the nature of the error.\n\t\t *
errorMessage - text describing the error.\n\t\t *
\n\t\t * @param {number} unsubscribeOptions.timeout - which, if present, determines the number of seconds\n\t\t * after which the onFailure callback is called. The presence of\n\t\t * a timeout does not prevent the onSuccess callback from being\n\t\t * called when the unsubscribe completes\n\t\t * @throws {InvalidState} if the client is not in connected state.\n\t\t */\n\t\tthis.unsubscribe = function (filter, unsubscribeOptions) {\n\t\t\tif (typeof filter !== \"string\")\n\t\t\t\tthrow new Error(\"Invalid argument:\"+filter);\n\t\t\tunsubscribeOptions = unsubscribeOptions || {} ;\n\t\t\tvalidate(unsubscribeOptions, {invocationContext:\"object\",\n\t\t\t\tonSuccess:\"function\",\n\t\t\t\tonFailure:\"function\",\n\t\t\t\ttimeout:\"number\"\n\t\t\t});\n\t\t\tif (unsubscribeOptions.timeout && !unsubscribeOptions.onFailure)\n\t\t\t\tthrow new Error(\"unsubscribeOptions.timeout specified with no onFailure callback.\");\n\t\t\tclient.unsubscribe(filter, unsubscribeOptions);\n\t\t};\n\n\t\t/**\n\t\t * Send a message to the consumers of the destination in the Message.\n\t\t *\n\t\t * @name Paho.MQTT.Client#send\n\t\t * @function\n\t\t * @param {string|Paho.MQTT.Message} topic - mandatory The name of the destination to which the message is to be sent.\n\t\t * \t\t\t\t\t - If it is the only parameter, used as Paho.MQTT.Message object.\n\t\t * @param {String|ArrayBuffer} payload - The message data to be sent.\n\t\t * @param {number} qos The Quality of Service used to deliver the message.\n\t\t * \t\t
\n\t\t * \t\t\t
0 Best effort (default).\n\t\t * \t\t\t
1 At least once.\n\t\t * \t\t\t
2 Exactly once.\n\t\t * \t\t
\n\t\t * @param {Boolean} retained If true, the message is to be retained by the server and delivered\n\t\t * to both current and future subscriptions.\n\t\t * If false the server only delivers the message to current subscribers, this is the default for new Messages.\n\t\t * A received message has the retained boolean set to true if the message was published\n\t\t * with the retained boolean set to true\n\t\t * and the subscrption was made after the message has been published.\n\t\t * @throws {InvalidState} if the client is not connected.\n\t\t */\n\t\tthis.send = function (topic,payload,qos,retained) {\n\t\t\tvar message ;\n\n\t\t\tif(arguments.length == 0){\n\t\t\t\tthrow new Error(\"Invalid argument.\"+\"length\");\n\n\t\t\t}else if(arguments.length == 1) {\n\n\t\t\t\tif (!(topic instanceof Message) && (typeof topic !== \"string\"))\n\t\t\t\t\tthrow new Error(\"Invalid argument:\"+ typeof topic);\n\n\t\t\t\tmessage = topic;\n\t\t\t\tif (typeof message.destinationName === \"undefined\")\n\t\t\t\t\tthrow new Error(format(ERROR.INVALID_ARGUMENT,[message.destinationName,\"Message.destinationName\"]));\n\t\t\t\tclient.send(message);\n\n\t\t\t}else {\n\t\t\t\t//parameter checking in Message object\n\t\t\t\tmessage = new Message(payload);\n\t\t\t\tmessage.destinationName = topic;\n\t\t\t\tif(arguments.length >= 3)\n\t\t\t\t\tmessage.qos = qos;\n\t\t\t\tif(arguments.length >= 4)\n\t\t\t\t\tmessage.retained = retained;\n\t\t\t\tclient.send(message);\n\t\t\t}\n\t\t};\n\n\t\t/**\n\t\t * Normal disconnect of this Messaging client from its server.\n\t\t *\n\t\t * @name Paho.MQTT.Client#disconnect\n\t\t * @function\n\t\t * @throws {InvalidState} if the client is already disconnected.\n\t\t */\n\t\tthis.disconnect = function () {\n\t\t\tclient.disconnect();\n\t\t};\n\n\t\t/**\n\t\t * Get the contents of the trace log.\n\t\t *\n\t\t * @name Paho.MQTT.Client#getTraceLog\n\t\t * @function\n\t\t * @return {Object[]} tracebuffer containing the time ordered trace records.\n\t\t */\n\t\tthis.getTraceLog = function () {\n\t\t\treturn client.getTraceLog();\n\t\t}\n\n\t\t/**\n\t\t * Start tracing.\n\t\t *\n\t\t * @name Paho.MQTT.Client#startTrace\n\t\t * @function\n\t\t */\n\t\tthis.startTrace = function () {\n\t\t\tclient.startTrace();\n\t\t};\n\n\t\t/**\n\t\t * Stop tracing.\n\t\t *\n\t\t * @name Paho.MQTT.Client#stopTrace\n\t\t * @function\n\t\t */\n\t\tthis.stopTrace = function () {\n\t\t\tclient.stopTrace();\n\t\t};\n\n\t\tthis.isConnected = function() {\n\t\t\treturn client.connected;\n\t\t};\n\t};\n\n\tClient.prototype = {\n\t\tget host() { return this._getHost(); },\n\t\tset host(newHost) { this._setHost(newHost); },\n\n\t\tget port() { return this._getPort(); },\n\t\tset port(newPort) { this._setPort(newPort); },\n\n\t\tget path() { return this._getPath(); },\n\t\tset path(newPath) { this._setPath(newPath); },\n\n\t\tget clientId() { return this._getClientId(); },\n\t\tset clientId(newClientId) { this._setClientId(newClientId); },\n\n\t\tget onConnectionLost() { return this._getOnConnectionLost(); },\n\t\tset onConnectionLost(newOnConnectionLost) { this._setOnConnectionLost(newOnConnectionLost); },\n\n\t\tget onMessageDelivered() { return this._getOnMessageDelivered(); },\n\t\tset onMessageDelivered(newOnMessageDelivered) { this._setOnMessageDelivered(newOnMessageDelivered); },\n\n\t\tget onMessageArrived() { return this._getOnMessageArrived(); },\n\t\tset onMessageArrived(newOnMessageArrived) { this._setOnMessageArrived(newOnMessageArrived); },\n\n\t\tget trace() { return this._getTrace(); },\n\t\tset trace(newTraceFunction) { this._setTrace(newTraceFunction); }\n\n\t};\n\n\t/**\n\t * An application message, sent or received.\n\t *
\n\t * All attributes may be null, which implies the default values.\n\t *\n\t * @name Paho.MQTT.Message\n\t * @constructor\n\t * @param {String|ArrayBuffer} payload The message data to be sent.\n\t *
\n\t * @property {string} payloadString read only The payload as a string if the payload consists of valid UTF-8 characters.\n\t * @property {ArrayBuffer} payloadBytes read only The payload as an ArrayBuffer.\n\t *
\n\t * @property {string} destinationName mandatory The name of the destination to which the message is to be sent\n\t * (for messages about to be sent) or the name of the destination from which the message has been received.\n\t * (for messages received by the onMessage function).\n\t *
\n\t * @property {number} qos The Quality of Service used to deliver the message.\n\t *
\n\t *
0 Best effort (default).\n\t *
1 At least once.\n\t *
2 Exactly once.\n\t *
\n\t *
\n\t * @property {Boolean} retained If true, the message is to be retained by the server and delivered\n\t * to both current and future subscriptions.\n\t * If false the server only delivers the message to current subscribers, this is the default for new Messages.\n\t * A received message has the retained boolean set to true if the message was published\n\t * with the retained boolean set to true\n\t * and the subscrption was made after the message has been published.\n\t *