Node.js 使用与分配不同的侦听端口

Question

I set socket.io to listen to port 4000. When I view my app from my browser, the page will not load on port 4000. However, app will load on port 5500. Could not find where port 5500 was assigned.

 const mongo = require('mongodb').MongoClient; const client = require('socket.io').listen(4000).sockets; const dbName = 'chats'; //Database collection // Connect to mongo mongo.connect('mongodb://127.0.0.1/mongochat', function(err, client) { if (err) { throw err; } console.log('MongoDB connected...'); // Connect to Socket.io client.on('connection', function(socket) { let chat = client.db(dbName);

Answer 1

According to Socket.io documentation ( https://socket.io/docs/server-api/ )

Basic

const io = require('socket.io')(3000);

With options

const io = require('socket.io')(3000, {
  path: '/test',
  serveClient: false,
  // below are engine.IO options
  pingInterval: 10000,
  pingTimeout: 5000,
  cookie: false
});

⚠️ Note

In case you are using some network package (like express or http ), check that those packages are not overriding your listening port.