js websocket心跳

ApiPost-宣博文 前端 2021-03-05
var heartCheck = {
    pongTime: 30 * AP.SECOND, //30秒接收心跳
    pingTime: (30 * AP.SECOND / 10) * 8,
    timeoutObj: null,
    serverTimeoutObj: null,
    reset: function () {
        // clearTimeout(this.timeoutObj);
        clearTimeout(this.serverTimeoutObj);
        return this;
    },
    PingStart: function () {
        var self = this;
        this.timeoutObj = setTimeout(function () {
            //这里发送一个心跳,后端收到后,返回一个心跳消息,
            //onmessage拿到返回的心跳就说明连接正常
            if (WEB_SOCKET != null && WEB_SOCKET.readyState == WebSocket.OPEN) {
                console.log("心跳发送PING");
                WEB_SOCKET.send("PING")
                self.PingStart();
            }
        }, this.pingTime) //10秒发送一次心跳
    },
    PongStart: function () {
        var self = this;
        self.serverTimeoutObj = setTimeout(function () { //如果超过一定时间还没重置,说明后端主动断开了
            if (WEB_SOCKET != null) {
                console.log("服务器30秒没有响应,关闭连接")
                WEB_SOCKET.close();
            }
        }, self.pongTime)
    }
}
WEB_SOCKET = new WebSocket("ws://88.gaoqiaoxue.com/v5/apipost.io?userToken=" + AP.USER.userIndendify);

                WEB_SOCKET.onopen = function (evt) {
                    console.log("连接成功,发送ping");
                    WEB_SOCKET.send("PING")
                    heartCheck.PingStart();
                    heartCheck.reset().PongStart(); //打开心跳检测
                };
                WEB_SOCKET.onerror = function (err) {
                    console.log(err);
                    if (WEB_SOCKET != null) {
                        console.log("异常,关闭连接", err);
                        WEB_SOCKET.close();
                    }
                    reject(err)
                }
                WEB_SOCKET.onmessage = function (evt) {
                    if (WEB_SOCKET != null) {
                        heartCheck.reset().PongStart(); //拿到任何消息都说明当前连接是正常的 心跳检测重置
                    }
                };

                WEB_SOCKET.onclose = function (evt) {
                    console.log("Connection closed.");
                };



//自动重连机制 也和这个差不多,后面在发出来
中文版Postman,rap文档管理

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