Javascript node.js 错误：读取 ECONNRESET
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node.js Error: read ECONNRESET
提问by MeetJoeBlack
I m running an Express 4 application, and I added some logic to router:
我正在运行 Express 4 应用程序，并向路由器添加了一些逻辑：
router.get('/pars', function(req, res, next) {
fetcher.parseXml(function(err, result){ //download files from ftp server, it can takes from 10 sec to 1 minute
if(err) {
console.log("router " + err);
res.render('index', { title: err });
}else {
console.log(result);
res.render('index', { title: 'Download finish' });
}
});
});
And added coressponding button to start index page, that send ajax to that '/pars' endpoint:
并添加了 coressponding 按钮以启动索引页面，将 ajax 发送到该“/pars”端点：
...
<button id="btn">Parse Data</button>
<script>
$( document ).ready(function() {
$('#btn').click(function () {
$.get(
"/pars",
onAjaxSuccess
);
});
function onAjaxSuccess(data) {
alert(data);
};
});
</script>
So all works fine and I sucesfully reloading page and downloading files from ftp using 'jsftp' module, but after some time (it may be 30 sec or 2 minutes ) I got error which crash all my app:
所以一切正常，我成功地重新加载页面并使用 'jsftp' 模块从 ftp 下载文件，但一段时间后（可能是 30 秒或 2 分钟）我遇到了错误，导致我的所有应用程序崩溃：
events.js:85
throw er; // Unhandled 'error' event
^
Error: read ECONNRESET
at exports._errnoException (util.js:746:11)
at TCP.onread (net.js:559:26)
I found similar problem at Node js ECONNRESET
我在Node js ECONNRESET发现了类似的问题
And added this 'catching' code to my app.js:
并将此“捕获”代码添加到我的 app.js 中：
process.on('uncaughtException', function (err) {
console.error(err.stack);
console.log("Node NOT Exiting...");
});
Now app doesnt crashes, but spams that error from time to timeto my log, and all logic works fine.
现在应用程序不会崩溃，但会不时向我的日志发送该错误，并且所有逻辑都可以正常工作。
I think issue can be in ftp.get:
我认为问题可能出在 ftp.get 中：
Ftp.get(config.get("ftpDownloader:dir") + '/'+ fileName, __dirname + '/xml/' + fileName, function(hadErr) {
if (hadErr){
log.error('There was an error retrieving the file.' + hadErr);
ftpDonwloadCallback(hadErr);
}else{
log.info("XML WAS DOWNLOADED: " + fileName);
readFile(fileName, ftpDonwloadCallback);
}
});
Maybe somebody can help me how I can fix that problem?
也许有人可以帮助我如何解决这个问题？
回答by Li Chunlin
depends on the error info:
取决于错误信息：
events.js:85
throw er; // Unhandled 'error' event
^
Error: read ECONNRESET
at exports._errnoException (util.js:746:11)
at TCP.onread (net.js:559:26)
it's caused by TCP connection. if the underlying socket receive a 'error' event, but no 'error' event listener, it will propagate and crash you process.
它是由 TCP 连接引起的。如果底层套接字收到“错误”事件，但没有“错误”事件侦听器，它将传播并使您的进程崩溃。
check your http server, add error event listener to it.
检查您的 http 服务器，向其添加错误事件侦听器。
for example:
例如：
var server = http.createServer(function(request, response){ ... ... });
server.on('error', function(err) { ... ... });
if you want to catch the error from client, you can listener 'clientError' event.
如果你想从客户端捕获错误，你可以监听 'clientError' 事件。
