我已经在Rackspace上安装了Ubuntu节点.js Socket.IO
当我尝试一个简单的服务器应用程序并尝试使用客户端请求时，我只得到了"提供静态内容"而不是握手。在调试的浏览器中，我可以看到"Hello S..."，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（相同的脚本在本地开发中有效）
为什么node.js只提供静态内容而不握手？
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程序"套接字服务器.js：
// 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');
});
});
下面是一个简单的客户端（SERVERDOMAIN被替换为Real domain）：
<!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>
在你的客户端代码中试试这个
var socket = io.connect('http://SERVERDOMAIN:8866');
此问题主要与不正确的 url 有关。
我正在用几个Android（手机和平板电脑）设备以及桌面浏览器在wifi连接上测试我的 socket.io 应用程序。根据上面 beNerd 的回答，我改变了我的
io.connect('http://localhost:3000');
自
io.connect('http://192.168.5.3:3000'); // ip address of machine where the node.js app is running.
它奏效了。
希望答案对用户测试他们的 NodeJS 和 Socket.IO 使用 Wifi 连接的应用程序有所帮助。
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（精确穿山甲）和安装节点.js带有 socket.io
对于客户端，我正在使用带有 Flash 文件的 socket.io 的本地副本.js。
;-）