Alipay applet -MQTT ejectors, IoT devices WSS access Ali cloud IoT platform of Things

Alipay applet -MQTT simulator by WSS access Ali cloud IoT platform of Things

Applet effects:

1. Preparations

1.1 Registration Ali cloud account

Ali cloud account opened, and through the payment of treasure authentication www.aliyun.com

1.2 free open IoT Things kit

Products official website www.aliyun.com/product/iot

2. The console procedure

2.1 Create Product

JSON format

2.2 Product definition

Add product attributes temperature of temperature, humidity, humidity

2.3 Register Equipment

In the device product registration, obtain identity triples

3. Small program operation

3.1 on-line device

3.2 reporting data

3.3 Sub topics and data downlink

First click subscribe to a topic , go to the console push messages.

Issue instructions Log

Applet effect

4. applet development process

4.1 Alipay applet socket interface adapter

socket interface my.sendSocketMessage and my.onSocketMessage is the base64 string, does not support ArrayBuffer, it needs its own conversion

import miniBase64 from 'mini-base64';
miniBase64.arrayBufferToBase64()复制代码

4.2 IoT Ali cloud authentication signature

const params = {
      productKey: pageThat.data.productKey.trim(),
      deviceName: pageThat.data.deviceName.trim(),
      deviceSecret: pageThat.data.deviceSecret.trim(),
      timestamp: Date.now(),
      clientId: Math.random().toString(36).substr(2),
    }
    //1.生成clientId，username，password
    const contentStr = "clientId" + params.clientId + "deviceName" + params.deviceName + "productKey" + params.productKey + "timestamp" + params.timestamp;

    var clientId = `${params.clientId}|securemode=2,signmethod=hmacsha1,timestamp=${params.timestamp}|`;
    var username = `${params.deviceName}&${params.productKey}`;
    var password = crypto.HmacSHA1(contentStr, params.deviceSecret).toString();复制代码

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Reproduced in: https: //juejin.im/post/5cf0ce70e51d4577407b1cd1