I created a sample to post data to a rest services and I found out that when I have non-ascii or non-latin character (please see data.firstName), my post request using TEST-REST.js will throw
error: { [Error: socket hang up] code: 'ECONNRESET' }.
// TEST-REST.js
var http = require('http');
var data = JSON.stringify({
firstName: 'JoaquÌn',
});
var options = {
host: '127.0.0.1',
port: 3000,
path: '/users',
method: 'POST',
headers: {
'Content-Type': 'application/json',
'Content-Length': data.length
}
};
var req = http.request(options, function(res) {
var result = '';
res.on('data', function(chunk) {
result += chunk;
});
res.on('end', function() {
console.log(result);
});
});
req.on('error', function(err) {
console.log(err);
});
req.write(data);
req.end();
and on my rest services, it throw me error like this:
SyntaxError: Unexpected end of input Sun Sep 08 2013 23:25:02 GMT-0700 (PDT) - at Object.parse (native)
at IncomingMessage.<anonymous> (/Volumes/Data/Program_Data/GitHub/app/node_modules/express/node_modules/connect/lib/middleware/json.js:66:27) info at IncomingMessage.EventEmitter.emit (events.js:92:17)
at _stream_readable.js:920:16 : - - - [Mon, 09 Sep 2013 06:25:02 GMT] "POST /users HTTP/1.1" 400 - "-" "-"
at process._tickDomainCallback (node.js:459:13)
if I replace firstName value from 'JoaquÌn' to 'abc', everything works just fine. I think I'm missing something to support or escape to make it work.
does anyone have any idea how I solve this problem? I also tried following: require('querystring').escape(model.givenName), and it works but I'm not happy with it.
UPDATED I found out that if I comment out: app.use(express.bodyParser());, the error disappears.
When a socket hang up is thrown, one of two things happens: When you're a customer, When you send a request to a distant server as a client and don't get a response in a timely manner. This error is caused by the end of your socket.
It means that socket does not send connection end event within the timeout period. If you are getting the request for cheerio via http.
"ECONNRESET" means the other side of the TCP conversation abruptly closed its end of the connection. This is most probably due to one or more application protocol errors. You could look at the API server logs to see if it complains about something.
This is node's issue, not express's issue. https://github.com/visionmedia/express/issues/1749
to resolve, change from
'Content-Length': data.length
to
'Content-Length': Buffer.byteLength(data)
RULE OF THUMB
Always use Buffer.byteLength() when you want to find the content length of strings
UPDATED
We also should handle error gracefully on server side to prevent crashing by adding middleware to handle it.
app.use(function (error, req, res, next) {
if (!error) {
next();
} else {
console.error(error.stack);
res.send(500);
}
});
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