当我从服务器ditConsumer
收到基于标志的消息时我正在调用一个按预期工作的函数sendMessageToFile()
,这里的问题是当我导航到其他页面并再次返回时所以这里是消息socket.on正在侦听两次并执行所有变量和方法两次。如果我来回三次它会听三次,我会很感激这里的帮助,它看起来像多个标签上的socket.io连接问题。
ctrll.js
socket.on('ditConsumer',function (data) {
console.log('SEND MESSAGE FLAG',sendMessageFlag)
console.log('MESSAGE FROM SERVER',data);
var obj = {
file:$scope.filename,
data:data
}
$scope.event.push(data);
// socket.emit('messageToFile',obj);
if(sendMessageFlag === true) {
return sendMessageToFile(obj);
}
});
function sendMessageToFile (data){
if(data.file) {
socket.emit('startrecording', data);
$scope.disabledRecBtn = true;
$scope.disabledStopBtn = false;
$scope.showMessage = true;
}
}
socketFactory.js
angular.module('loggingApp').factory('socket', function($rootScope) {
'use strict';
var server = 'http://localhost:3000';
var socket = io.connect(server, {
'forceNew': true
});
return {
on: function(eventName, callback) {
socket.on(eventName, function() {
var args = arguments;
$rootScope.$apply(function() {
callback.apply(socket, args);
});
});
},
emit: function(eventName, data, callback) {
socket.emit(eventName, data, function() {
var args = arguments;
$rootScope.$apply(function() {
if (callback) {
callback.apply(socket, args);
}
});
})
}
};
});
serverIo.js
var sio = require('socket.io');
var ditconsumer = require('./consumers/ditconsumer');
var logsRecording = require('./records/logsRecording');
var io = null;
exports.io = function () {
return io;
};
exports.initialize = function(server) {
io = sio(server);
io.on('connection', function(socket) {
// Producer.startProducer();
ditconsumer.start(function(value){
io.emit('ditConsumer',value);
});
socket.on('createlogfile', function(params) {
logsRecording.userLogs(function(err,filename) {
if (err){
console.log(err);
} else {
socket.emit('filename', filename);
}
});
});
socket.on('startrecording', function(obj) {
logsRecording.recordLogs(obj);
});
socket.on('stopRecording',function (filename) {
console.log('stop recording data',filename);
logsRecording.deleteFile(filename);
});
});
};
答案 0 :(得分:1)
一种方法是......
// add an event_id to the event message on server-side
io.sockets.emit('my_event', {msg:'hi', event_id: '1'});
// on client side keep track of handled events
var acknowledged = [];
// handle event
io.on('my_event', function (msg) {
// only continue if the event hasn't been handled before
if(!~acknowledged.indexOf(msg.event_id)){
// add to array of acknowledged events
acknowledged.unshift(msg.event_id);
// prevent array from growing to large
if(acknowledged.length > 20){
acknowledged.length = 20;
}
// handle once per event
}
});
您可能还想利用socket.io会议室并为每个连接创建唯一标识符,或创建类似uuid的内容并将其存储在浏览器的本地存储空间中;读取或创建它并在连接到io时提供它。然后,当您发送活动时,您可以定位特定的房间。
或做类似的事情......