WebSocket断线重连

【WebSocket断线重连】WebSocket断线重连 即时通讯 心跳重连
废话不多说,直接上代码.

$scope.timeout = 10800,//3分钟发一次心跳 $scope.timeoutObj = null, $scope.serverTimeoutObj = null, $scope.init = function() { $scope.lockReconnect = false, $scope.wsUrl = "wss://xxx:8888"; // 监听窗口关闭事件,当窗口关闭时,主动去关闭websocket连接,防止连接还没断开就关闭窗口,server端会抛异常。 window.onbeforeunload = function() { ws.close(); } //创建WebSocket对象 $scope.createWebSocket = function() { try { if(window.WebSocket || window.MozWebSocket) { ws = new WebSocket($scope.wsUrl); } $scope.initEventHandle(); } catch(e) { $scope.reconnectWebSocket($scope.wsUrl); } }, $scope.initEventHandle = function() { /*** 连接建立时触发*/ ws.onopen = function(e) { //发送登录信息 msg = new Object(); ws.send('xxx'); $scope.heartCheckWebSocket(); //心跳检测重置 }; ws.onmessage = function(e) { $scope.heartCheckWebSocket(); //如果获取到消息,心跳检测重置 //拿到任何消息都说明当前连接是正常的$scope.handMsg(e.data); }; ws.onclose = function(e) { $scope.reconnectWebSocket($scope.wsUrl); //console.log("服务器拒绝了连接. 请检查服务器是否启动"); }; ws.onerror = function(e) { $scope.reconnectWebSocket($scope.wsUrl); //console.log("连接已断开,请刷新页面重新登录。"); }; }, //处理消息 $scope.handMsg = function(eventData) { if(!eventData) return; if(eventData =https://www.it610.com/article/="close") { $scope.reconnectWebSocket($scope.wsUrl); //这里要注意onclose的第一个参数必须是1000或者3000—4999 //console.log("服务器通知关闭"); } else { //这里收到后端返回一个心跳消息,如果data返回空,则说明连接正常,到此停止处理 //这里是你要写的逻辑代码 } }, //重连 $scope.reconnectWebSocket = function() { if($scope.lockReconnect) return; $scope.lockReconnect = true; setTimeout(function() { $scope.createWebSocket(wsUrl); $scope.lockReconnect = false; }, 2000); }, //心跳检测 $scope.heartCheckWebSocket = function() { //重置 $timeout.cancel($scope.timeoutObj); $timeout.cancel($scope.serverTimeoutObj); //开启 $scope.timeoutObj = $timeout(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 //发送登录信息 msg = new Object(); ws.send('xxx'); $scope.serverTimeoutObj = $timeout(function() { //如果超过一定时间还没重置,说明后端主动断开了 //如果onclose会执行reconnect,我们执行ws.close()就行了.如果直接执行reconnect 会触发onclose导致重连两次 ws.close(); }, $scope.timeout); }, $scope.timeout); } }

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