socket.io 连接不一致

Question

我刚刚将 socket.io 添加到我的 MEAN 堆栈应用程序。它的连接不一致。这是我启动服务器并通过浏览器连接时得到的结果：

GET /socket.io/?EIO=3&transport=polling&t=LTnYzIi 200 1.948 ms - 3956
POST /socket.io/?EIO=3&transport=polling&t=LTnYzJL 404 1.617 ms - 66
GET /socket.io/?EIO=3&transport=polling&t=LTnYzrU 200 1.612 ms - 3956
POST /socket.io/?EIO=3&transport=polling&t=LTnYzs6 404 1.974 ms - 66
GET /socket.io/?EIO=3&transport=polling&t=LTnY-jT 200 1.652 ms - 3956
POST /socket.io/?EIO=3&transport=polling&t=LTnY-kE 404 0.975 ms - 66

但是，如果我停止服务器并在浏览器发出请求（在后台）时重新启动它，客户端会连接并且工作正常。每次有通信它真的必须连接对吗？请告诉我我缺少什么。

这是我的 package.json socket.io 电话：

"socket.io": "^1.4.6"

我的 app.js 看起来像这样：

var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var expressValidator = require('express-validator')
var mongodb = require('mongodb');
var mongoose = require('mongoose');
mongoose.connect("mongodb://localhost/newphase1");
var async = require('async');
var config = require('./config.js');
var routes = require('./routes/index');
var api = require('./routes/api');

var app = express();

var http = require('http').Server(app);
var io = require('socket.io')(http);

app.use(favicon(__dirname + '/public/favicon(4).png'));

app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, '/public')));

app.use(expressValidator({
  errorFormatter: function(param, msg, value){
    var namespace = param.split('.'),
    root = namespace.shift(),
    formParam = root;

    while(namespace.length){
      formParam += '[' + namespace.shift() + ']';
    }
    return { 
      param: formParam,
      msg:msg,
      value:value
    };
  }
}));

var api = require('./routes/api')(app,express,io);
app.use('/api', api);


app.get('*',function(req,res){
  res.sendFile(__dirname + '/public/views/index.html');
});

io.on('connection', function(socket) {
    console.log('client connected!'); 
});

http.listen(config.port,"127.0.0.1",function(err){
  if(err){
    console.log(err);
  }else{
    console.log('listening on port 3000');
  }
})

我的 socket.io 脚本文件（来自 CDN）在我的 index.js(angular):

<script src="https://cdn.socket.io/socket.io-1.4.6.js"></script>

我为 socket.io 服务：

.factory('socketio',function($rootScope){
    var socket = io.connect("http://localhost:3000");
    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);
                    }
                });
            });
        }
    }
});

它确实连接了，但不是始终如一。有任何想法吗？

Answer 1

出于某种原因

npm start

给我上面的不一致而

node app.js

工作正常。

socket.io 连接不一致

socket.io is not consistently connecting

sockets

node.js

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angularjs

mean-stack