使用 websockets 和 SocketIO 防止“心跳超时”

我正在使用 NodeJS 和 SocketIO 作为我的 websocket 解决方案。它工作正常，但几分钟后，我的套接字服务器总是超时，并在控制台中显示以下消息：

debug - fired heartbeat timeout for client
info - transport end <heartbeat timeout>
debug - set close timeout for client
debug - cleared close timeout for client
debug - discarding transport

这是我完整的server.js file:

var app = require('http').createServer(handler)
  , io = require('socket.io').listen(app)
  , fs = require('fs')

app.listen(3000);

function handler (req, res) {
  fs.readFile(__dirname + '/index.html',
  function (err, data) {
    if (err) {
      res.writeHead(500);
      return res.end('Error loading index.html');
    }

    res.writeHead(200);
    res.end(data);
  });
}

io.sockets.on('connection', function (socket) {

  socket.emit('news', { hello: 'from socket server' });

  socket.on('swipe', function (from, msg) {
     console.log('I received a private message by ', from, ' saying ', msg);
     socket.emit('swipe event received on server!');
  });

如何防止超时发生？

查看关闭超时 and 心跳超时选项here https://github.com/LearnBoost/Socket.IO/wiki/Configuring-Socket.IO

您可以通过以下方式在服务器上以编程方式设置这些：

var io = require('socket.io').listen(80);
io.set('close timeout', 60);
io.set('heartbeat timeout', 60);

至于您的应用程序的设计，您应该检查一下this https://stackoverflow.com/questions/14914768/is-it-safe-to-set-a-high-close-timeout-on-socket-io关于是否应该更改超时的问题。