我正在尝试在 Cloud9 上部署一个简单的 derby 项目。
我使用 Node.js 创建了一个工作区，并添加了以下 4 个文件的内容。
索引.html：
<Body:>
<!--Templates define both HTML and model-view bindings-->
Holler: <input value="{{hello.message}}">
<h2>{{hello.message}}</h2>
index.js：
var app = module.exports = require('derby').createApp('hello', __filename);
app.loadViews(__dirname);
// Routes render on client as well as server
app.get('/', function(page, model) {
// Subscribe specifies the data to sync
model.subscribe('hello.message', function() {
page.render();
});
});
server.js：
require('derby-starter').run(__dirname, {port: process.env.PORT});
包.json：
{
"name": "derby-examples",
"description": "Example applications for the Derby framework",
"version": "0.6.0",
"repository": "",
"main": "server.js",
"dependencies": {
"derby": "0.6.0-alpha41",
"derby-starter": "^0.2.6",
"derby-stylus": "~0.1.0",
"express": "~3.18.0",
"d-connection-alert": "~0.1.0",
"d-before-unload": "~0.1.0",
"d-bootstrap": "~0.1.0",
"d-codemirror": "~0.2.0",
"d-showdown": "~0.1.0",
"derby-debug": "^0.1.0"
},
"optionalDependencies": {},
"devDependencies": {},
"engines": {
"node": "0.10.x"
}
}
当我启动服务器时，它一直在说
Important: use process.env.PORT as the port and process.env.IP as the host in your scripts!
debugger listening on port 15454
Master pid 27985
debugger listening on port 15454
Failed to open socket on port 15454, waiting 1000 ms before retrying
并继续
Failed to open socket on port 15454, waiting 1000 ms before retrying
如何正确启动服务器？