在真实的服务器中运行socket.io服务器，而不是localhost？

Question

我发现教程中的编码指向在localhost中运行一个简单的socket.io聊天服务器，我安装了必要的环境，如nodejs，express，init package.json，我使用命令“node app.js”从终端启动服务器，然后我访问了我的localhost中的索引页面，它显示了聊天页面，它运行正常。但事情是我想用这个在我的办公室的实时服务器，在办公室内聊天。这段代码是否足够。我是这个socket.io和nodejs的新手。我的办公室有用于托管其网站的实时服务器，此代码打开并侦听端口3000.如果您能告诉我如何在真实服务器中运行它，将会非常有用。

的index.html

  <!DOCTYPE html>
<html>
   <head>
      <title>Hello world</title>
   </head>

   <script src = "/socket.io/socket.io.js"></script>
   <script>
      var socket = io();
      function setUsername() {
         socket.emit('setUsername', document.getElementById('name').value);
      };
      var user;
      socket.on('userExists', function(data) {
         document.getElementById('error-container').innerHTML = data;
      });
      socket.on('userSet', function(data) {
         user = data.username;
         document.body.innerHTML = '<input type = "text" id = "message">
         <button type = "button" name = "button" onclick = "sendMessage()">Send</button>
         <div id = "message-container"></div>';
      });
      function sendMessage() {
         var msg = document.getElementById('message').value;
         if(msg) {
            socket.emit('msg', {message: msg, user: user});
         }
      }
      socket.on('newmsg', function(data) {
         if(user) {
            document.getElementById('message-container').innerHTML += '<div><b>' + 
               data.user + '</b>: ' + data.message + '</div>'
         }
      })
   </script>

   <body>
      <div id = "error-container"></div>
      <input id = "name" type = "text" name = "name" value = "" 
         placeholder = "Enter your name!">
      <button type = "button" name = "button" onclick = "setUsername()">
         Let me chat!
      </button>
   </body>
</html>

app.js服务器

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

  app.get('/', function(req, res) {
 res.sendfile('index.html');
  });

  users = [];
 io.on('connection', function(socket) {
 console.log('A user connected');
 socket.on('setUsername', function(data) {
  console.log(data);

  if(users.indexOf(data) > -1) {
     socket.emit('userExists', data + ' username is taken! Try some              
  } else {
     users.push(data);
     socket.emit('userSet', {username: data});
  }
 });

  socket.on('msg', function(data) {
  //Send message to everyone
  io.sockets.emit('newmsg', data);
  })
 });

http.listen(3000, function() {
console.log('listening on localhost:3000');
});

Answer 1

另一答案