Question

我已经在Rackspace上安装了带有Socket.IO的Ubuntu node.js

当我尝试使用简单的服务器应用程序并尝试使用客户端请求时，我收到了静态内容＆＃39;只是代替握手。在调试的浏览器中，我可以看到＆＃34; Hello S ...＆＃34;在服务器端：

# node socket-server.js 
   info  - socket.io started
   debug - served static content /socket.io.js
   debug - served static content /socket.io.js

我不确定从哪里开始寻找问题（相同的脚本适用于本地开发）

为什么node.js只提供静态内容并且不会握手？

Iptables允许8866端口：#iptables -L

Chain INPUT (policy ACCEPT)
target     prot opt source               destination         
ACCEPT     all  --  anywhere             anywhere            
ACCEPT     all  --  anywhere             anywhere            state RELATED,ESTABLISHED 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:ssh 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:www 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:8866 
DROP       all  --  anywhere             anywhere            

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination         
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:8866

这是一个简单的服务器应用＆＃39; socket-server.js＆＃39;：

// Require HTTP module (to start server) and Socket.IO
var http = require('http'), io = require('socket.io');

// Start the server at port 8866
var server = http.createServer(function(req, res){

        // Send HTML headers and message
        res.writeHead(200,{ 'Content-Type': 'text/html' });
        res.end('<h1>Hello Socket Lover!</h1>');
});
server.listen(8866);

// Create a Socket.IO instance, passing it our server
var socket = io.listen(server);

// Add a connect listener
socket.on('connection', function(client){

        // Create periodical which ends a message to the client every 5 seconds
        var interval = setInterval(function() {
                client.send('This is a message from the server!  ' + new Date().getTime());
        },5000);

        // Success!  Now listen to messages to be received
        client.on('message',function(event){
                console.log('Received message from client!',event);
        });
        client.on('disconnect',function(){
                clearInterval(interval);
                console.log('Server has disconnected');
        });

});

这是一个简单的客户端（SERVERDOMAIN被替换为真实域名）：

<!DOCTYPE html>
<html>
<head>
<script src="http://SERVERDOMAIN:8866/socket.io/socket.io.js"></script>
<script>

    // Create SocketIO instance
    var socket = io.connect('SERVERDOMAIN:8866');
    // Add a connect listener
    socket.on('connect',function() {
        log('<span style="color:green;">Client has connected to the server!</span>');
    });
    // Add a connect listener
    socket.on('message',function(data) {
        log('Received a message from the server:  ' + data);
    });
    // Add a disconnect listener
    socket.on('disconnect',function() {
        log('<span style="color:red;">The client has disconnected!</span>');
    });

    // Sends a message to the server via sockets
    function sendMessageToServer(message) {
        socket.send(message);
        log('<span style="color:#888">Sending "' + message + '" to the server!</span>');
    }

    // Outputs to console and list
    function log(message) {
        var li = document.createElement('li');
        li.innerHTML = message;
        document.getElementById('message-list').appendChild(li);
    }

</script>
</head>
<body>

<p>Messages will appear below (and in the console).</p><br />
<ul id="message-list"></ul>
<ul style="margin:20px 0 0 20px;">
    <li>Type <code>socket.disconnect()</code> to disconnect</li>
    <li>Type <code>socket.connect()</code> to reconnect</li>
    <li>Type <code>sendMessageToServer('Your Message')</code> to send a message to the server</li>
</ul>

</body>
</html>

Answer 1

在您的客户端代码中试试这个

var socket = io.connect('http://SERVERDOMAIN:8866');

此问题主要与错误的网址相关联。

Answer 2

我正在使用几个Android（手机和平板电脑）设备以及 wifi连接上的桌面浏览器测试我的socket.io应用程序。基于 beNerd上面的答案 我改变了我的

io.connect('http://localhost:3000');

到

io.connect('http://192.168.5.3:3000'); // ip address of machine where the node.js app is running.

并且有效。

希望答案对于用户使用Wifi连接测试NodeJS和Socket.IO应用程序很有帮助。

Answer 3

我最终安装了全新的服务器，现在一切正常。

我使用过Ubuntu 12.04 LTS（Precise Pangolin）并使用socket.io安装node.js

对于客户端我使用带有Flash文件的socket.io.js的本地副本。

- ）

NodeJS - Socket.IO设置：提供静态内容无握手（Rackspace Cloud Server上的Ubuntu）

3 个答案: