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socketEnd/utils/.pydio

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socketEnd/utils/WebSocket.js

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+const Socket = require("ws");
+const utils = require("./utils");
+
+class WebSocket {
+    constructor(options) {
+        this.SocketList = {};
+        this.options = {};
+        this.WS = null;
+
+        this.options = options;
+
+        this.createServer()
+    }
+
+
+    createServer() {
+        const WS = new Socket.Server(this.options);
+        WS.on('connection', (ws, req) => this.connection(ws, req))
+    }
+
+    async connection(ws, req) {
+        console.log('建立连接：', req.url);
+        const id = req.url.split('/')[1];
+        if (!id) return ws.close();
+
+        this.SocketList[id] = ws;
+        ws.id = id;
+        this.filter();
+
+        ws.on('message', this.message.bind(this));
+        ws.on('close', (msg) => this.close(msg, ws.id));
+    }
+
+    async message(msg) {
+        msg = msg.toString('utf-8');
+        try {
+            const message = JSON.parse(msg);
+            switch (message.type) {
+                // 收到客户端1 android 的消息
+                // 需要 拿到到GPS的经纬度 进行距离判断
+                // 然后服务器 向客户端2 推送消息
+                case 1:
+                  
+                    console.log("收到客户端1 android 的消息");
+                    this.sendMessage({ data: "start" }, "clent2")
+                    break;
+            
+                // 收到客户端2的消息
+                case 2:
+                    // this.send("flutter客户端2测试")
+                    console.log("收到客户端2的消息", message);
+                    break;
+            
+                default:
+                    break;
+            }
+        } catch (error) {
+            console.log(error);
+            console.log("消息格式必须为Object");
+        }
+    }
+
+    async filter() {
+        for(let key in this.SocketList) {
+            if (!this.SocketList[key].readyState === 1) delete this.SocketList[key]
+        }
+    }
+
+    close(msg, id) {
+        console.log('关闭连接', id, msg);
+    }
+
+    sendMessage(msg, id) {
+        // console.log("==================");
+        if(id) {
+            // console.log("if ==== ", msg, id);
+            // console.log("this.SocketList ==== : ", this.SocketList);
+            if (this.SocketList[id].readyState === 1) {
+                this.SocketList[id].send(JSON.stringify(msg));
+            }
+        } else {
+            // console.log("else");
+            // console.log("this.SocketList: ", this.SocketList);
+            for (let ws of Object.values(this.SocketList)) {
+                if (ws.readyState === 1) ws.send(JSON.stringify(msg));
+            }
+        }
+    }
+
+} 
+
+module.exports = WebSocket;

socketEnd/utils/utils.js

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+class utils {
+
+    /**
+     * 计算两经纬度点之间的距离(单位：米)
+     * @param {*} lat1  纬度1
+     * @param {*} lng1 经度1
+     * 
+     * @param {*} lat2 纬度2
+     * @param {*} lng2 经度2
+     * @returns 
+     */
+     
+    caculateLL(lng1, lat1, lng2 = 117.325426, lat2 = 31.794477) {
+        var radLat1 = (lat1 * Math.PI) / 180.0;
+        var radLat2 = (lat2 * Math.PI) / 180.0;
+        var a = radLat1 - radLat2;
+        var b = (lng1 * Math.PI) / 180.0 - (lng2 * Math.PI) / 180.0;
+        var s =
+          2 *
+          Math.asin(
+            Math.sqrt(
+              Math.pow(Math.sin(a / 2), 2) +
+                Math.cos(radLat1) *
+                  Math.cos(radLat2) *
+                  Math.pow(Math.sin(b / 2), 2)
+            )
+          );
+        s = s * 6378.137;
+        s = Math.round(s * 10000) / 10;
+        return s;
+    }
+}
+
+module.exports = new utils();