lilishop-uniapp/utils/socket_service.js

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import store from '@/store/index'
import config from '@/config/config.js'
import storage from './storage';
export default class SocketService {
/**
* 单例
*/
static instance = null;
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static get Instance () {
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if (!this.instance) {
this.instance = new SocketService();
}
return this.instance;
}
// 和服务端连接的socket对象
ws = null;
// 存储回调函数
callBackMapping = {};
// 标识是否连接成功
connected = false;
// 记录重试的次数
sendRetryCount = 0;
// 重新连接尝试的次数
connectRetryCount = 0;
// 定义连接服务器的方法
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connect () {
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// 连接服务器
if (!window.WebSocket) {
return console.log("您的浏览器不支持WebSocket");
}
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this.ws = new WebSocket(config.baseWsUrl + '/' + storage.getAccessToken());
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// 连接成功的事件
this.ws.onopen = () => {
console.log("连接服务端成功");
this.connected = true;
// 重置重新连接的次数
this.connectRetryCount = 0;
};
// 1.连接服务端失败
// 2.当连接成功之后, 服务器关闭的情况(连接失败重连)
this.ws.onclose = () => {
console.log("连接服务端失败");
this.connected = false;
this.connectRetryCount++;
setTimeout(() => {
this.connect();
}, 500 * this.connectRetryCount);
};
// 得到服务端发送过来的数据
this.ws.onmessage = (msg) => {
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// console.log(msg.data)
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this.registerCallBack(msg.data);
};
}
// 回调函数的注册
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registerCallBack (callBack) {
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// console.log("回调函数的注册", callBack);
this.callBackMapping = callBack;
}
// 取消某一个回调函数
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unRegisterCallBack (callBack) {
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console.log("取消某一个回调函数", callBack);
this.callBackMapping = null;
}
// 发送数据的方法
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send (data) {
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// 判断此时此刻有没有连接成功
if (this.connected) {
this.sendRetryCount = 0;
this.ws.send(data);
} else {
this.sendRetryCount++;
setTimeout(() => {
this.send(data);
}, this.sendRetryCount * 500);
}
}
}