Socket.io:在收到握手响应之前关闭连接 [英] Socket.io: Connection closed before receiving a handshake response

问题描述

我决定在socket.io上聊天，所以我只是从http://psitsmike.com/2011/09/node-js-and-socket-io-chat-tutorial/.

服务器端:

var app = require('express').createServer()var io = require('socket.io').listen(app);应用程序听(8080)；app.get('/', function(req, res) {res.sendfile(__dirname + '/index.html');});var 用户名 = {};io.sockets.on('connection', function(socket) {socket.on('sendchat', function(data) {io.sockets.emit('updatechat', socket.username, data);});socket.on('adduser', function(username) {socket.username = 用户名；用户名[用户名] = 用户名；socket.emit('updatechat', 'SERVER', '你已经连接');socket.broadcast.emit('updatechat', 'SERVER', username + '已连接');io.sockets.emit('updateusers', 用户名);});socket.on('断开', function() {删除用户名[socket.username];io.sockets.emit('updateusers', 用户名);socket.broadcast.emit('updatechat', 'SERVER', socket.username + '已断开连接');});});

客户端:

<代码><脚本 src="/socket.io/socket.io.js"></脚本><脚本src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js"></script><脚本>var socket = io.connect('http://localhost:8080');...

脚本工作正常，但我在 Chrome 控制台中发现它无法建立 websocket 连接，并回退到 XHR('websocket 连接无效').尝试更改端口，并且还在本地主机和 VPS 上进行了测试 - 结果相同.原因是什么?使用 express 2.4.6 和 socket.io 0.8.4.

解决方案

应用程序作为同一容器视图的一部分进行部署，它将使用应用程序 url 自动连接.可能不需要主机和端口，请检查以下选项

<脚本>var socket = io();

<块引用>

其他选项

<脚本>var socket = io('http://localhost');

I decided to make a chat on socket.io, so I just copied an example from http://psitsmike.com/2011/09/node-js-and-socket-io-chat-tutorial/.

Server side:

var app = require('express').createServer()
var io = require('socket.io').listen(app);
app.listen(8080);

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

var usernames = {};

io.sockets.on('connection', function(socket) {
    socket.on('sendchat', function(data) {
        io.sockets.emit('updatechat', socket.username, data);
    });

    socket.on('adduser', function(username) {
        socket.username = username;
        usernames[username] = username;
        socket.emit('updatechat', 'SERVER', 'you have connected');
        socket.broadcast.emit('updatechat', 'SERVER', username + ' has connected');
        io.sockets.emit('updateusers', usernames);
    });

    socket.on('disconnect', function() {
        delete usernames[socket.username];
        io.sockets.emit('updateusers', usernames);
        socket.broadcast.emit('updatechat', 'SERVER', socket.username + ' has disconnected');
    });
});

Client side:

< script src="/socket.io/socket.io.js">< /script>
< script src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js"></ script>
< script>
var socket = io.connect('http://localhost:8080');
...

The script works fine but I found out in the Chrome console that it can't establish a websocket connection, and falls back to XHR ('websocket connection invalid'). Tried to change ports, and also tested both on localhost and VPS - same results. What can be the reason? Using express 2.4.6 and socket.io 0.8.4.

解决方案

Application is deployed as part of same container view , it will automatically connect using application url . Host and port might not be required , check with below options

<script src="/socket.io/socket.io.js"></script>
<script>
  var socket = io();
</script>

Other option

<script src="/socket.io/socket.io.js"></script>
<script>
  var socket = io('http://localhost');     
</script>

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