Nodejs内存泄漏与下载管理器取消下载

Question

我使用Expressjs 3和Nodejs 0.10创建了一个简单的文件下载器

function download(req, res, filepath, filename){
    res.header('Content-Type', 'application/force-download');
    res.header('Content-Type', 'application/octet-stream');
    res.attachment(filename);
    res.download(filepath, filename);
}

一切正常，但是当我用下载管理器(例如Internet download Manager)测试应用程序时，当我中止或取消下载(在下载之前或下载期间)时，它会抛出一个警告:

Trace
    at Socket.EventEmitter.addListener (events.js:160:15)
    at Socket.Readable.on (_stream_readable.js:653:33)
    at Socket.EventEmitter.once (events.js:179:8)
    at TCP.onread (net.js:512:26)
(node) warning: <b>possible EventEmitter memory leak detected. 11 listeners added. Use
emitter.setMaxListeners() to increase limit.</b>

如何在终止文件下载后删除侦听器?

Answer 1

问题解决了
在Expressjs定义后添加setMaxListeners(0):

var express = require('express');
//expressjs 2.x
//var app = module.exports = express.createServer();
//expressjs 3.x
var app = module.exports = express();
//ADD BELOW CODE
app.setMaxListeners(0);

感谢@robertklep