How to set POST encoding with request module on node.js? - node.js

Question

I'm using request module on node.js but there is something problem with encoding option. beneath codes are simple post request, but I don't know how to set up encoding of form field data. I already set headers to 'Content-Type': 'application/x-www-form-urlencoded; charset=euc-kr' But it doesn't works. field data is korean, like "안녕하세요", and I should post it with euc-kr encoding. (The site takes euc-kr, not utf8)
The same program on Java application, I coded like this :
PrintWriter wr = new PrintWriter(new OutputStreamWriter(conn.getOutputStream(), "euc-kr"));
But I don't know how to in nodejs. Can anyone give some solution...?
Code Sample
//Load the request module
var request = require('request');
//Lets configure and request
request({
url: 'http://google.com', //URL to hit
headers: { 'Content-Type': 'application/x-www-form-urlencoded; charset=euc-kr' },
method: 'POST',
form: {
field1: 'data',
field2: 'data'
}
}, function(error, response, body){
if(error) {
console.log(error);
} else {
console.log(response.statusCode, body);
}
});

Answer 1

Finally I got a soultion, and I solved this problem.
If you send a data as a form using request module, the module change your form encoding to utf-8 by force. So even you setted your form encoding to another charset, the module changes your charset to utf8 again. You can see that at request.js on line 1120-1130.
So, You'd better send a data by 'body' option, not 'form' option.

Answer 2

Node doesn't support EUC-KR so you can use iconv-lite to extend the native encodings available and set the encoding option in request.
List of Natively Supported Encodings
iconv.extendNodeEncodings(); only works for node pre v4+. See here to get this working for a newer version of node.
var iconv = require('iconv-lite');
var request = require('request');
// This will add to the native encodings available.
iconv.extendNodeEncodings();
request({
url: 'http://google.com', //URL to hit
method: 'POST',
form: {
field1: 'data',
field2: 'data'
},
encoding: 'EUC-KR'
}, function(error, response, body){
if(error) {
console.log(error);
} else {
console.log(response.statusCode, body);
}
});
iconv.undoExtendNodeEncodings();