当我在 nodeJS 中运行它时,我有这个 mqtt 连接工作正常......但是当我将它移动到反应组件中时,我收到此错误:
WebSocket 握手期间出错:net::ERR_CONNECTION_RESET
我读过这是由与这里的默认端口有关的事情引起的......React 中 MQTT 协议的使用 https://stackoverflow.com/questions/48944899/usage-of-mqtt-protocol-in-react但我找不到一个我足够理解的答案来解决它。
有人可以帮忙吗?干杯
import React, { Component } from "react";
import mqtt from "mqtt";
let topic = "vendingmachine2/command";
const options = {
port: 16987,
host: "mqtt://address.cloudmqtt.com",
clientId: "***",
username: "***",
password: "***",
keepalive: 60,
reconnectPeriod: 1000,
protocolId: "MQIsdp",
protocolVersion: 3,
clean: true,
encoding: "utf8",
timeout: 3,
useSSL: true
};
function CheckoutForm() {
const MQTTConnect = () => {
const client = mqtt.connect("mqtt://address.cloudmqtt.com", options);
client.on("connect", function() {
// When connected
console.log("connected");
client.subscribe("vendingmachine2/feedback", error => {
if (error) console.error(error);
else {
client.publish(topic, "0");
}
});
openDoor();
});
client.on("message", (topic, message) => {
console.log(topic, message.toString());
});
function openDoor() {
let door = [1, 2];
for (let i = 0; i < door.length; i++) {
client.publish(topic, `${door[i]}`);
}
}
};
return (
<div>
<button onClick={MQTTConnect}>asdasd</button>
</div>
);
}
export default CheckoutForm;