Question

我有以下server.js，可在node.js / express上运行socket.io。

var logger = require('morgan');
var cors = require('cors');
var http = require('http');
var https = require('https');
//fs for reading certificate from filesystem
var fs = require('fs');
var express = require('express');
var errorhandler =  require('errorhandler');
var dotenv = require('dotenv');
var bodyParser = require('body-parser');
//path for the static html files
var path = require('path');
//using gzip for compressing content to   speed things up
var compression = require('compression');
// the app from express 
var app = express();
// Restricts possible calls/sec to the API
const rateLimit = require('express-rate-limit');
 // socket.io module
var socketIO = require('socket.io');
// Helmet package: Helmet can help protect your app from some well-known web vulnerabilities by setting HTTP headers
var helmet = require('helmet');

dotenv.load();

// Limit calls/sec to the API
 ///////////////////////////////////////////    /////////////////////////////
// app.enable("trust proxy"); // only if you're behind a reverse proxy (Heroku, Bluemix, AWS ELB, Nginx, etc)

// Restrict to 100 calls in 10 min
const apiLimiter = rateLimit({
  windowMs: 10 * 60 * 1000, // 10   minutes, calc done by milisecs
max: 100
});

// only apply to requests that begin with /api/, Web pages not affected
app.use('/api/', apiLimiter);
 ////////////////////////////////////////////////////////////////////////

 // Make app using helmet for security regarding http headerss
app.use(helmet());

// Parsers
// File limit up to 10 MB
 app.use(bodyParser.json({ limit:   '10mb', extended: true }));
 app.use(bodyParser.urlencoded({ limit: '10mb', extended: true }));

 // use gzip for making network calls smaller in size by compressing them
 app.use(compression());

 //using CORS for protection, todo
 app.use(cors());
 app.options('*', cors());

app.use(function(err, req, res, next) {
if (err.name === 'StatusError') {
  res.send(err.status, err.message);
 } else {
   next(err);
}
 });

  // change _env to production if ready
    if (process.env.NODE_ENV ===      'development') {
 app.use(logger('dev'));
 app.use(errorhandler());
 }

//Setup basic Routes of the API for  this app:
app.use(require('./anonymous-routes'));
app.use(require('./protected-routes'));

//set the port for HTTP
var port = process.env.PORT || 3001;
//set the port for HTTPS
var portSec = process.env.PORT || 4433;

/////// Config for the app and server  part done ///////
// create the server from the module and tie configured app to it
var server = http.createServer(app);
// tie the server to socket.io
var io = socketIO(server);

// implement real time connected client   count
var numClients = 0;
io.on('connection', function(socket) {
numClients++;
io.emit('stats', { numClients: numClients}); 
 console.log('Connected clientinstances:', numClients);

 socket.on('disconnect', function() {
  numClients--;
  io.emit('stats', { numClients:   numClients });
    console.log('Connected client      instances:', numClients);
 });
 });

//startup the HTTP server
server.listen(port, function(err) {
  console.log('active');
});

我有以下客户端应连接到socket.io。

<!--Get socket.io JS-->
 <script src="/socket.io/socket.io.js">     
</script>

<script>
// Inform sockets of joining
var socket = io.connect('/');
socket.emit('event', { message: 'Im    logged in now ' });

</script>

运行此命令时，没有任何反应，也没有任何错误，也没有任何控制台打印输出。我怀疑某些软件包可能会使sockets.io混乱。据我从socket.io文档了解，客户端可以通过调用connect方法轻松访问它。

我在这里想念什么？

为什么在node.js上运行socket.io时没有显示结果？

0 个答案: