Node.js和socket.io在Cloud9 IDE上不起作用 [英] Node.js and socket.io don't work on Cloud9 IDE
问题描述
有人在Cloud9 IDE上运行Node.js和socket.io有经验吗？
Does anyone has experience to have Node.js and socket.io working on Cloud9 IDE?
示例（带有Socket.io的NodeJS） （位于 https://c9.io/site/blog/2013 / 05 / native-websockets-support / ）不起作用。
The "Example (NodeJS with Socket.io)" (at https://c9.io/site/blog/2013/05/native-websockets-support/) doesn't work.
首先，服务器（ https://c9.io/etlolap/webapp ，/ test.js）会引发错误，除非我进行如下修复。当test.js处于活动选项卡上时，我单击了运行按钮。
First, the server (https://c9.io/etlolap/webapp, /test.js) throws an error unless I fix as follow. I clicked Run button while test.js is on active tab.
var
socketIo = require('socket.io'),
io = socketIo.listen(Number(process.env.PORT));
io.sockets.on('connection', function (socket) {
socket.emit('news', { hello: 'world' });
socket.on('my other event', function (data) {
console.log(data);
});
});
然后，我的客户（ https://c9.io/etlolap/webapp ，/ test.html）仍然无法连接。在test.html处于活动标签上时，我单击了预览按钮。
Then, my client (https://c9.io/etlolap/webapp, /test.html) still cannot connect. I clicked Preview button while test.html is on active tab.
<!doctype html>
<html>
<head>
<script src="/socket.io/socket.io.js"></script>
<script>
var socket = io.connect('https://webapp-c9-etlolap.c9.io');
socket.on('news', function (data) {
console.log(data);
socket.emit('my other event', { my: 'data' });
});
</script>
</head>
<body>
Loading...
</body>
</html>
，并在下面显示错误消息。
and got error message below.
失败加载资源：服务器响应状态为404 ---（未找到） https ：//c9.io/socket.io/socket.io.js
未捕获的ReferenceError：未定义io --- test.html：6
Uncaught ReferenceError: io is not defined --- test.html:6
推荐答案
感谢Damhat和Matthias的反馈。经过多次失败的尝试，最终我自己找到了解决方案。
在Cloud9 IDE上，客户端的典型行（此处为test.html）必须更改为
Thanks for feedback from damphat and Matthias. After many failed attempts, finally I figured out the solution myself. On Cloud9 IDE, the typical line in client (test.html here) has to be changed from,
<script src="/socket.io/socket.io.js"></script>
到
<script src="https://webapp-c9-etlolap.c9.io/socket.io/socket.io.js"></script>
前缀是Cloud9项目URL的URL。通过更改此行，我的示例成功了。
The prefix is the URL of your Cloud9 project URL. By changing this line, my example worked.
这篇关于Node.js和socket.io在Cloud9 IDE上不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
